Destroy, Rebuild – The future of green space in Ho Chi Minh City

Destroy, Rebuild – The future of green space in Ho Chi Minh City
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With green space losing out to several large public infrastructure projects, local residents are worried about the future of Ho Chi Minh City’s urban environment. Michael Tatarski looks into one group’s conservation efforts and asks whether the city can develop without giving in to environmental tradeoffs.

When news broke in November that the city would clear 84 mahogany trees from Ton Duc Thang Street to make way for construction of another bridge from District 1 to the Thu Thiem area across the Saigon River in District 2, Nguyen Phuong Thao felt she could no longer stand by. “Someone needed to speak up, and I decided I would be the first to do it,” she says through a translator.

The announcement came on the heels of another story that 200 trees would also be felled in District 2, while part of Le Loi and all of Nguyen Hue, two major downtown thoroughfares, had already been denuded for work on a pedestrian boulevard and the metro system. According to Thao, who owns a coffee shop and works for a company that builds brands, many residents felt depressed by the news because they couldn’t do anything, as the plans were already approved when they were released to the public. In response she created a website, HappyTreeInSaigon.com, to give voice to those concerned by the removal of so much green space.

“The purpose of the website was to collect signatures and send them to the agencies and organisations [in charge of the bridge and other projects] so the government will know about the expectations of the citizens and consider more carefully before they conduct something that may harm the environment,” Thao says.

So far, Thao and her team have collected around 3,000 signatures, about half of which are from students. “The final purpose is to get the attention of people who have authority because I don’t want to do this alone,” she says. “I want someone who actually has power and can make an impact.”

Happy Tree in Saigon, the group born from the website, made headlines late last year when members gathered on Ton Duc Thang and held banners explaining the importance of the doomed trees. However, the group does not plan any repeat actions, since the police were concerned about traffic jams related to the group’s presence. “We will focus more on digital media and when we have enough funds we will focus on one spot, like having an event in one place, not on the street,” Thao stresses.

When it comes to funding, Thao is hopeful that NGOs working on environmental projects in Saigon will be willing to provide monetary support to her conservation efforts. If money comes through, Thao aims to create an education campaign centred on the environment. “Youths do not fully understand the environment … I want them to learn how to protect it in the correct way,” she explains.

Dr Michael Waibel, a professor in the Department of Human Geography at the University of Hamburg who has studied Vietnam since 1996, agrees that Saigon has a green space problem. According to statistics from the HCMC Park and Greenery Office, the city has just 0.8 square metres of green space per capita. This puts the city well below the World Health Organisation’s recommendation of a minimum eight square metres per capita. However, Waibel’s main concern is inequality in access to green space. “People in District 7 or on the outskirts have much better access,” he says. “The biggest problem is with the densely-populated inner city. It’s a socioeconomic question.”

He views the current situation with the trees in a more utilitarian way. “Regarding the trees on Le Loi, in this case it’s a tradeoff. You need a public transportation system to decrease individual traffic, so you make something that is good for sustainability but you have to cut the trees,” Waibel says from Hamburg. He is also positive about the future of green space in the city, something which may hearten Thao and the other members of Happy Tree in Saigon.

“One thing you can say is that the trees grow incredibly fast in Saigon,” the urban planner says. “Look at Phu My Hung [a new urban area south of the city], where the trees have become huge in just ten years.” If trees are replanted once the projects are completed, he reckons, the streets could look nearly normal in just a decade or two. The city government has also set a target of raising the provision of green space to four or five square metres per capita in the future.

However, these initiatives can’t come solely from authorities. “The people themselves have to realize and fight for more green space in their neighbourhoods,” Waibel says. He points to the verdant hems, or alleys, of the city, often full of potted plants and flowers. “This kind of bottom-up initiative to expand green space should be supported and people should be educated that they have their own responsibility,” he continues.

Thao understands this responsibility and hopes Happy Tree in Saigon can link decision-makers and the general public. “What we are perceiving wrong is that we develop our country first and protect the environment later,” she says.

The group plans to connect the people who work with trees and the environment with the architecture firms and urban planners who are building the future Saigon to get them to work as a team. “At the moment they work separately, and by bringing them together they can make a complete plan to build while preserving the environment.”

By Michael Tatarski

Thousands of Russian protesters in Moscow: “No Putin, no war!” [video]

Thousands of Russian protesters in Moscow No Putin no war
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Thousands of Russians assembled for an unlawful protest in Moscow Tuesday night, shouting slogans such as, “Putin is a thief!” “Crimea is not ours!” and “No Putin, no war!” Hundreds were arrested.

Other chants included sentiments of solidarity with Ukrainians: “Russians! Ukrainians! Brothers forever!” “Putin is Russia’s shame!” “Russia doesn’t trust Putin!” besides the more topical, “Freedom for Navanly!”

The protest was organized around the abrupt sentencing of Russian opposition leader and blogger Alexei Navalry and his brother Oleg Navalny. Alexei Navalny has been for several years one of the most outspoken of Putin’s critics. He and his brother were charged with defrauding a French chocolate company for $520,000.

The sentence was expected to be handed down Jan. 15, but it was suddenly moved forward to Dec. 30, the date of one of the biggest holidays in Russia and the first of the Russian New Years holiday that lasts until Jan. 8.

Read more: Navalny given surprisingly light sentence, attempts to attend protest of conviction, rearrested

Also unexpectedly, Navalny received only a suspended sentence instead of the up to 10 years many expected. His brother received 3 years prison for the same charge. Both men were also fined 4.4 million rubles.

Alexei Navalny, however, was arrested hours later for attempting to make his way to Tuesday night’s protest.

Thousands of protesters gathered in front of the Kremlin at Manezh Square to demonstrate against the trial. Rock band Pussy Riot had released a video early Tuesday urging participation at the protest, and approximately 18,000 people indicated they would attend via a Facebook page.

 

Among those arrested were Aider Muzhdabaev, deputy editor in chief of Moskovsky Komsomolets and journalist Alexander Kolyandr, who was detained for reasons that have not yet been reported. 

Read more: Russians Are Protesting the War in Ukraine, and Are Being Arrested by Russian Police [with video]

Around 70 of those arrested were still being held as of Wednesday.

Protesters in Russia can be arrested if the assembly has not been authorized by the Russian government beforehand, although the Russian constitution guarantees, “Citizens of the Russian Federation shall have the right to gather peacefully, without weapons, and to hold meetings, rallies, demonstrations, marches and pickets.” (Art. 31.) In 2012, the Russian government stiffened penalties for protesters by raising fines for illegal protesters and criminalizing the use of masks, weapons or objects that may be used as weapons, and the organization of protests by citizens who have been convicted of certain crimes.

By James Haleavy

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Navalny given surprisingly light sentence, attempts to attend protest of conviction, rearrested

Navalny given surprisingly light sentence, attempts to attend protest of conviction, rearrested
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Russian opposition leader Alexey Navalny was expected to receive a stiff sentence of up to 10 years for charges of fraud–charges widely believed to be a veil for the Russian government’s suspected interest in silencing the outspoken critic–but a surprising verdict saw Navalny walk out of court Tuesday with a suspended sentence, hours before his rearrest for breaking house arrest to attend a protest in Moscow’s Manezh Square.

Navalny was expected to receive 10 years in a penal colony. The prosecutor asked 9 years, but in other recent cases, such as Kirovoles, they added another year.

However, and to the surprise of many, he received a suspended sentence, while his brother Oleg Navalny received three and a half years for the same offense.

Navalny attempted to attend a protest at Manezh Square, located directly in front of the Kremlin, and was arrested by Russian police while en route for breaking the conditions of his house arrest sentence.

Thousands of protesters attended the protest to voice their opposition to the trials of the Navalnys and the Russian war in Ukraine.

Over 100 protesters were arrested at the demonstration. Because the protest was not authorized by the Russian government, all participants committed crimes by attending.

Navalny has been under house arrest since February since he was charged with defrauding French cosmetics firm Yves Rocher with his brother. The men were found guilty of stealing approximately $520,000.

Navalny has been known to the Kremlin since at least 2011 when he was among the leaders of strong protests in Moscow.

The verdict for the sentence was expected to be handed down Jan. 15, 2015, but was brought forward abruptly to Dec. 30, the main Russian New Years holiday. The Russian New Year break begins Dec. 30 and ends Jan. 8. Commenters noted that the date may have been an attempt to avoid or mitigate large-scale protests.

By James Haleavy

 


 

Last week Navalny delivered his final speech in court–a form of address called in Russia a “last word,” in which he referenced exiled writer Alexander Solzhenitsyn. In the speech, Navalny reiterated Solzhenitsyn’s phrase, “Live not by lies.”

The 1974 essay was published on the day Solzhenitsyn was arrested by Soviet secret police for treason, and ended, “DON’T LIE! DON’T PARTICIPATE IN LIES! DON’T SUPPORT A LIE!” [sic].

In the essay, Solzhenitsyn argued that the Soviet system was held together by a vital lie, which had become a mode of existence in the land.

Navalny addressed his echo of Solzhenitsyn’s words to the Russian public who participate in the current system of lies–those, Navlny said, who looked into the table rather than eye to eye.

Prosecution may also be directed at other activists associated with Navalny. An investigation into the organizers of public readings in parks have been accused of using public funds to support Navalny in a recently opened investigation.Navalny’s final word:

The last word of Alexei Navalny

“How many times in his life can a person who is not engaged in anything illegal pronounce his last words? Over the past year and a half, this is my sixth or seventh last words. It’s as if we are coming to the last days. All of you–judges, prosecutors, plaintiffs–in your conversations with me, look at the table. You all say, ‘Alexey, well, you already know everything.’ I understand, I understand that you now will not jump up, nor will the representative ‘Yves Rocher’ stand up and say, ‘You have convinced me.’ No, I understand that people are not built this way. No one will say to his family: ‘Today I jailed an obviously innocent man, and I live with it.’ I understand that it will sound like, “You already know everything,” or ‘Well, what did with regard to Putin…’

“My words refer to those who practice wrong or ignore what is happening. My words to you are for recognition that we should not tolerate lies about everything. I’m told that Russian interests in Turkmenistan–they do not exist, but for the interests of Russians in Ukraine it was necessary to start a war. I am told that in Gazprom they do not steal. I bring the documents and hear, ‘This just doesn’t exist.’ I say that we are ready to run in the elections and to demonstrate that we are forming a party. And we are not allowed into the elections and hear, ‘We have won.’

“The more a person brings to a lie, the more he faces that lie. A lie is the essence of the state. Yesterday Putin spoke and said, ‘We have no palaces!’ Yes, we took pictures of three of them in a month.

“Why put up with this nonsense? Why look at the table? Life is too short to look at the table. I do not have time to look back–I’ve already turned forty. Soon I’ll have grandchildren. We’ll look around and we’ll be in bed, and they’ll be looking at us and thinking, ‘Hurry up and vacate it.’We can be proud only moments when we can honestly look into the eyes of each other, when we do something worthy.

“For me it’s quite a painful situation. And a cunning, painful format, which is chosen by the Kremlin, not just putting me in jail, but trying to bring in more people: Ofitserova, the father of five children–and his wife–I have to look them in the eye. I admit it: yes, they hook me in, and also even innocent people are being dragged in. But even taking hostages can not stop me. Life has no meaning if we tolerate lies. I will never agree with the system that has been built in this country. It is built so as to rob everyone who in this room. This is a real junta.

“I do not regret a single second of the actions which I took to fight corruption. Kobzev told me, ‘Alex, you’ll just be jailed, because you have to challenge it, and they won’t endure it.’ Nakarkal! [He has predicted evil!] You can not live with the thought ‘Oh, I will be jailed.’ I was aware of this. But I do not regret it and will encourage people to exercise their right to freedom of assembly, among other things.

“And people have a legitimate right to revolt against the junta that has grabbed everything. We allowed them to rob us and turn us into beasts. What have they paid us? or what were you paid–staring at the table? Education, do you have it? No. Health Care? No. The roads? No. What are the wages of the bailiffs standing here? No, you’re robbed every day. I will not tolerate this. Will stand as long as necessary–here, beside this cage, or inside it.

“My brother was not going to engage in politics. There is no need to aggravate this. I will not stop because of the taking of hostages, but what do they gain from killing them? I appeal to absolutely everyone. It may sound naive, and we are used to laughing at the name of this famous article [by Solzhenitsyn], but, ‘Live not the lie.’

“‘Live not by lies.’ Nothing else is left. In our country, in this situation, there’s no other solution.

“I thank you all for your support and call on everyone to ‘live not by the lie.’ I’m absolutely sure that if they isolate me, if they imprison me and so on, another will come and take my place. I never did anything unique or complicated. I’m sure that in the Anti-Corruption Fund or elsewhere there will be people who will continue to do the same, regardless of the decisions of these courts, the only purpose of which is to imitate justice. Thank you.”

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By James Haleavy

Obama visits Hawaii for the holidays

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For many of us, the week transitioning from Christmas to the New Years is probably one of the most cheer-filed occasions in our year. Parties going off all over the place, strangers exchanging holiday greetings with each other with a smile, and hard-working parents taking time off from their work to spend time with their families. And the President is apparently not one to miss out on the festivities.

President Barack Obama arrived in his home state, Hawaii, on Dec. 22 for the first family’s annual tradition of spending the holidays in their vacation house at Kailua. They are expected to return to Washington on Jan. 5, 2015.

Like most Americans going on vacation, the President aims to do a lot of things while he is in the locale. His itinerary includes golfing on Hawaii’s many golf courses, snorkeling at Hanauma Bay, hiking the Maunawili Falls trail, and dining at Waikiki. On Christmas Day, he visited the military members in Anderson Hall at the Marine Corps Base in Kaneohe Bay to express his gratitude for the Marines’ dedication to their duty.

While he looks forward to spending the entirety of his holidays, he is not completely cut off from his presidential responsibilities. Shortly before his trip for Hawaii, President Obama was asked to attend the funeral service for fallen NYPD officer Rafael Ramos. Although he did not attend the service personally, he sent Vice President and Dr. Jill Biden to appear in his stead and expressed his condolences to New York Police Commissioner Bill Bratton over the phone.

Now halfway through his vacation, the White House has yet to release the complete rundown of what the first family did during their first week of vacation time.

This would be the sixth time that the Obamas spent their holidays in Hawaii for the past five years.

By Antonio Torrijos

Personality at least as important as intelligence when it comes to doing well in school, research suggests

Personality at least as important as intelligence when it comes to doing well in school, research suggests
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According to new psychology research, personality is at least as important as intelligence when it comes to school. Some personality traits are more important than others, according to the findings, and the study has led researcher Dr. Arthur Poropat of Griffith’s School of Applied Psychology to suggest that educators may do better to target the fluid, teachable capacities of personality rather than rely on the more static capacity of intelligence alone.

“Personality is at least, if not more important than intelligence for education,” Poropat told The Speaker. “And unlike intelligence, we can help people to develop their personality to improve their academic performance and life outcomes.”

Arthur MGT photo 049(f3)08_008
Dr. Arthur Poropat

Poropat conducted the largest ever reviews of personality and academic performance based on the five fundamental personality factors–Conscientiousness, Openness, Agreeableness, Emotional Stability, and Extraversion. He found that Conscientiousness and Openness have the biggest influence on academic success, and helpfulness was found to also be involved in scoring grades.

“Students who scored highest on the three most relevant personality factors scored a full grade higher than students who scored lowest on those factors. The three factors are: Conscientiousness, which reflects things like making and carrying out plans, striving to achieve, and self-control; Openness (also called Openness to Experience and Intellect), encompassing being imaginative, curious, and artistic; and Emotional Stability, covering calmness and emotional adjustment (as opposed to being anxious, fearful or unstable). The two personality factors that are not so strongly linked with academic performance are Agreeableness (reflecting likability and friendliness), and Extraversion (talkative and socially-dominant).

“What my reviews of the research on personality and academic performance found was that Conscientiousness is at the very least just as important as intelligence for predicting academic performance.”

Who was doing the assessing was also a matter of the research. A students self-assessment was found to be as useful as a predictor of success in university as intelligence rankings, but the assessments of other students–those who knew the individual in question well–were found to be much more accurate than either.

“If someone who knows the student well rates the student’s personality, Conscientiousness is nearly four times as important.

“So, students who habitually manage their effort, make and stick to plans, and stay motivated regardless of set-backs, do substantially better, and this is more important than how smart the student is. Likewise, both Openness and Emotional Stability are much more useful for predicting grades and GPA when rated by someone who knows the student well. In other words, the creative and intellectually-curious students, and the calm and emotionally well-adjusted students, will do better at school and university.”

In general, personality was found to be more important than intelligence when it came to academic careers. Poropat explained why this might be.

“One way of thinking about this is that intelligence is a bit like horsepower for a car: it gives a student their basic capacity to learn. Conscientiousness, Openness and Emotional Stability is more like the way in which the car is driven. With respect to cars, a great driver in an average car will outperform a bad driver in a great car. Similarly, a student with average intelligence but who is high on Conscientiousness, Openness, and Emotional Stability will outperform an intelligent student who scores lowly on these factors.”

Poropat commented on some changes that could be made to education to improve its benefits to students.

“One thing that surprised me when I completed the first of my studies was that teachers already ‘knew’ what the results were. The many teachers I have spoken with typically say that hard-working, intellectually curious, and well-adjusted students perform better than smart students, in part because they are easier to teach. However, there is clear evidence from independent research–i.e., not mine–that students can be taught to change their personality in ways that help their studies. What I would like to see is education actively targeting personality development in ways that are closely linked to study and work. We already know this is possible and it produces good outcomes for students but we need more attention to this, and more research on how best to achieve this. Some of my postgraduate research students are already exploring this area.”

Not only can good personalities be taught to some degree, but students may be setting themselves up for failure by depending on the static capacity of intelligence, which is different from the fluid capacity of personality, according to Poropat.

“Professor Carol Dweck has done a lot of research on why teachers and parents should never tell a student they have done well because they are smart,” he explained. “The reason is that the students seem to know what research tells us: despite the mind-training software, it seems that it is not possible to truly improve someone’s intelligence. So, if a student thinks they have done well because they are smart, they conclude there is no point in making an effort so they stop trying and their performance gets worse.

“However, there is clear evidence that personality does change over time, and that it is possible to train people to change their personality–at least as far as changing how they consistently behave. In contrast with intelligence, students seem to know that they can learn new ways of managing themselves, and new ways of exploring ideas and skills, and new ways of managing their emotions. People typically develop higher levels of Conscientiousness with age, but they can also be taught this. And, people can also be taught to be higher on Openness and Emotional Stability. So, students of any age can develop their personality to improve their academic performance: the challenge is for educators to show them how.”

Poropat concluded that much of classroom success depends on how teachers bring out the best in students.

“Teachers need to help students develop their personalities in constructive ways. That is because, unlike intelligence, teachers can guide students to be more conscientious, open to experience, and emotionally-stable, which are the three personality factors that have the biggest effect on whether students learn well. Teachers should pay attention to whether students’ personalities support learning, and use that to guide teaching of individual students.

The report, “Other-rated personality and academic performance: Evidence and implications,” was completed by Arthur E. Poropat, and was published in the journal Learning and Individual Differences.

Rescuers: “QZ8501 might have sunk”

Rescuers QZ8501 might have sunk
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The head of the search and rescue team for AirAsia flight QZ8501 which disappeared while flying from Surabaya’s Juanda International Airport, Indonesia to Singapore on Sunday, revealed to Channel News Asia that search operations are confined to the Banga island, Belitung island and Lang Teng island, which are the areas most likely to contain wreckage from the aircraft, based on where it was last in contact with ground control. Indonesian officials reported there were 162 passengers on board.

The Belitung island is an area where fishermen claimed they had heard objects hit the island. A source told the Indonesian authorities that they saw a plane crash on Sunday. However, there is no formal confirmation from the concerned authority yet. Rescue teams featuring three helicopters, three airplanes, 11 vessels and several more fishing boats were gathered to prepare for the search of the missing aircraft.

Staff at the search and rescue team assumed and assessed, using the latest information source with consideration for different surrounding factors, that there is a possibility that the jet airliner might have sunk and it is at the bottom of the sea.

Meanwhile, officials in Indonesia added further that after disappearing from the radar and losing contact with air traffic control over ten hours, it is highly likely that the aircraft might have met with an accident.

An Indonesian Army spokesperson made a statement during a press conference earlier today, saying that the Army had sent five search planes to search for the missing aircraft, particularly around the eastern and northern sides of the Belitung Island. “Weather conditions in some areas are very cloudy but that is not an obstacle,” he said. Meanwhile, the Australian Air Force had even sent search planes from Darwin city, northern Australia early this morning on a search mission.

Moreover, the U.S., China and South Korea have also offered assistance in this search mission.

By Panthep Pande

Microscopic steam engines new world’s smallest

Microscopic steam engines new world's smallest
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How small are Dr. Pedro A. Quinto-Su’s steam engines? Smaller than red blood cells and most bacteria–between one and three millionths of a meter. The significantly strong pistons are powered by a combined process of optical manipulation which bypasses microfabrication and draws strength from simplicity, taking scientists one step closer to the “lab on a chip” miniaturization of everything.

“The piston–a microsphere–is powered by light, which also heats the sphere inducing the vapor microexplosions. Similar to an internal piston combustion engine,” Dr. Pedro Quinto-Su, physics professor at the Universidad Nacional in Mexico, told The Speaker.

“This is the first time that a steam engine has been miniaturized to a length scale of a micrometer,” Quinto-Su told us. “Also, the engine works in an environment dominated by fluctuations (Brownian), since it is immersed in liquid. In the context of optical micromanipulation the report shows that it is possible to have impulsive forces in an optical tweezer, which could extend even more the wide array of applications that use that technique.”

Quinto-Su placed the microscopic piston in historical context.

“In the past, the improved steam engine design of Watt started the industrial revolution and understanding the mechanism initiated modern thermodynamics. Steam engines were the foundation for all the engines that we have today.

“Now steam engines are mainly used for energy conversion in power plants, where steam turbines convert mechanical energy into electricity.”

There has been much interest in miniaturizing heat engines, Quinto-Su explained.

“In the last few decades there has been a trend in trying to miniaturize everything. In science this concept has been called “lab on a chip” and the idea is to have everything that is needed to make an experiment in a small chip. The interest in miniaturized versions of heat engines is that they could be used to do work in very localized volumes. For example, periodically displacing small objects including nanomaterials.”

Quinto-Su explained the challenges to miniaturization past the 1mm scale–the lower limit until the recent invention–and how his steam engine bypassed the previous obstacles.

“The main problem with tiny heat engines is that the efficiency is very poor. A few heat engines have been demonstrated at the micrometer scale with different working mechanisms. However, traditional heat engines that work with the expansion and compression of gas had not reached scales below 1mm, perhaps because most designs involved the assembly of microfabricated moving parts which made it more challenging–in addition to the expected poor efficiency.

“The implementation of the reported micrometer-sized piston steam engine is very simple and there is no need for microfabrication, only optical access is required. It needs an optical tweezer setup which is a widely available tool.”

Quinto-Su explained how the project began–as an attempt to combine two methods of microscopic manipulation to create the micro-piston.

“The project started by trying to combine two techniques of optical manipulation of microscopic objects immersed in liquids: optical tweezers and microscopic explosions (cavitation bubbles).”

Microscopic steam engines new world's smallest

Quinto-Su explained how small the steam engines were, and put in layman’s’ terms  how the various elements of the engines work.

“In the reported engine a spherical microparticle (1 or 3 micrometers in diameter, the largest dimension of a human red blood cell is about 10 micrometers) is periodically displaced by light and microscopic explosions.

“Optical tweezers use a focused laser beam that attracts transparent microscopic objects towards the focused spot. The objects are usually immersed in liquid and they are called colloids, usually these objects are microscopic spheres. Once the microparticles reach the focus of the laser beam they stay trapped in there. This technique exerts very small controlled forces (pico Newtons) in the microscopic objects.

“In contrast, microscopic vapor explosions in liquids exert large impulsive forces in the vicinity where the explosions are created. A vapor explosion creates a rapidly expanding bubble that later collapses (cavitation bubble). The bubble displaces the liquid at a very fast speed which also displaces the objects in the vicinity, exerting impulsive forces several orders of magnitude larger than those of optical tweezers.

“In the reported work, a spherical microparticle that is not completely transparent to the laser beam is placed in an optical tweezer. In this Microscopic steam engines new world's smallest way the sphere is attracted towards the focus of the beam, but at the same time it is heated because it is not transparent to the light. Once the sphere is close to the focus it is heated at a very fast rate and the liquid in contact with the microsphere explodes, pushing the sphere close to the starting position. Then the light forces take over and start attracting the sphere towards the focus repeating the cycle.

“Hence the combination of optical tweezers and vapor explosions resulted in a microparticle (piston) that is periodically attracted towards the focused laser and then is pushed away at a fast speed by microscopic vapor explosions. In a sense it is similar to an internal piston combustion engine.”

Quinto-Su noted that the the microexplosions are not initiated by a spark, but by a sudden temperature increase, similar to a diesel engine.

The power created by the pistons is significant, Quinto-Su explained.

“The average power is about 0.3 pico Watts and the power density is about two orders of magnitude less than that typical of car engines. However the effects at the microscopic scale are significant and could be used to pump small volumes of liquid or exert impulsive forces in nearby objects.”

The micro-pistons can be compared with the effect of transducers when driven at acoustic and ultrasound frequencies.

“Because transducers can be used to induce oscillations in liquid-gas boundaries which produce flow. In this case, the operation of the engine is periodic displacements of the piston and periodic explosions which also produce flow, similar to the effect of transducers.”

The report, “A microscopic steam engine implemented in an optical tweezer,” was authored by Pedro A. Quinto-Su and was published in Nature Communications

Three videos from Dr Pedro A. Quinto-Su’s research – 1-3 μm particle engines.

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No schooling come 5th January in Kenya

No schooling come 5th January in Kenya
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Education is a key factor in the development of any nation and so is it in Kenya too. However, despite the fact that Education is key in developing any state, the plight of teachers remains unattended to for now over a decade. In a recent move, The Kenya National Union of Teachers has called upon students and pupils to remain at home come Jan. 5. The Union has called for a nationwide strike come January if the Government does not honor its agreements.

The Union has warned the government to ensure the enumerations are enhanced and have issued a seven day notification to the government. At the Unions’ headquarters, Secretary General Mr. Wilson Sossion insisted that payment allowances have to be honored. Indeed, over the years, teachers’ boardroom meetings with the government have bore no fruits in having them well remunerated. The union has accused the Salaries and Renumeration Commission of being an impediment to their remuneration discussion. The commission has over the recent days increased the salaries of legislators and cabinet secretaries while the teachers’ wages have remained unattended to.

The teachers have held that they will hear nothing from the government and the Teachers Service Commission until the government gives

Knut Secretary General Wilson Sossion speaking
Knut Secretary General Wilson Sossion speaking

in to their demand. They have reiterated their words to play hard ball with demands for their payment hikes. The government is under pressure to put a more favorable deal before the teachers so as to avert the strike. The chairperson of the Union has held that the 7-day strike ultimatum takes effect on Dec. 29 and so the strike will begin on Jan. 5, the day that schools are expected to reopen for yet another term. The strike has however been said to be stoppable if only the teachers’ demands are met.

Indeed, teachers in the country, have faced an uphill task in fighting for their rights. Records put it straight that teachers always have to fight to have their rights issued to them. The streets speak better for them to have the government issue them with their rights. It is indeed noticeable and agreeable to each Kenyan citizen that the teachers always fight hard to get their benefits and possibility that the government listens well to the message of the streets. The constitution gives priority for people to engage in strikes.knut

The Kenya National Union of Teachers Chairperson, Mr. Nzili, has maintained that teachers have to be protected from the economic distress they are passing through. In a news interview with the Nation Television Network, he said that, “As patriotic Kenyans who support the nation and Govrnmebt, teachers have to be given the hearing and the consideration they require.” He holds the fact that they are prepared to be out of classrooms for as long as it takes for the government to meet their demands. He said that some of the Teachers demands are:

1. To have the Collective Bargaining Agreement (CBA) signed by the government in accordance with the court order
2. To have their salaries increased; a salary component within the Collective Bargaining Agreement.

Analysis by Morris Cerullo

 

 

Thailand’s LRCT: “No amnesty” for corruption cases

Thailand's LRCT No amnesty for corruption cases
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Mr. Kanit Na Nakorn, the chief of the Law Reform Commission of Thailand (LRCT), who is also in charge of the Constitution Drafting Committee (CDC), pointed out there will be no amnesty for corruption cases and that the junta should pass this bill to the parliament for approval.

Kanit stated his intention in a press conference Thursday to affirm the important basic rights and equality guarantees as stated in the old constitution and that he would like to add or edit important issues–particularly rules and regulations. Moreover, punishment will be imposed on violators, he added. Nonetheless, human rights, freedom and human equality should be respected, as written in the 2007 constitution.

Reform in political structure needs to follow the procedures laid out in the 2007 constitution. “Only important issues need to be addressed,” he reasserted, with the intention to formulate the country’s major policies, not the government’s or political parties’. However, such policies should be implemented, he added.

He explained further that reconciliation should be established on the ground of truth with consideration for the root cause of a particular problem as a move towards reconciliation. Whereas there should be clear and important conditions applied to the provision of amnesty, and it should not be bestowed upon those guilty of corruption charges, serious criminals, and upon whoever offends the monarch, which could disrupt national peace and order, Kanit asserted.

For the cabinet however, it was the view of the LRCT that the formation of the cabinet should remain unchanged in order to elect the prime minister in favor of the House of Representatives.

As for the judicial sector, the Supreme Court should judge on special legal matters, Kanit said. In addition, the Labour Court should be separated from the Court of Justice while the Military Court would be authorized to pass verdict on militaristic criminal cases only.

Hereby, the commission also stated that the martial law should be exercised only when it deems necessary and be proposed to parliament for approval.

By Panthep Pande

Zimbabwe has too many elephants – exporting some to China, other nations to take care of

Zimbabwe has too many elephants - exporting some to China, other nations to take care of
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The southern African nation of Zimbabwe has too many elephants to deal with, and has announced plans to begin exporting the overflow to other countries that may be better able to provide for the animals.

The first batch of exported elephants has already been discussed. China bought the largest number of elephants at 27. France is taking between 15 and 20 and the United Arab Emirates 15.

“We have 80,000 elephants against a carrying capacity of 42,000 and this is not sustainable in the long run,” Jerry Gotora, chairman of the Zimbabwe parks and wildlife authority, said of the sales, as reported by AFP. “The exports are carefully controlled by CITES. All those making noise about it are people who do not want Zimbabwe to benefit from its resources.”

Due to the costs associated with protecting elephants from poachers, the government of Zimbabwe relies partially on charities and private companies, but even this help has not prevented hundreds of animals from dying at the hands of poachers.

In 2013, between 90 and 300 elephants in Hwange national park were poisoned with cyanide by poachers in one notable killing, which was called the worst single massacre in 25 years of southern African history.

Zimbabwe is home to one of Africa’s biggest elephant populations since formerly-large Eastern and Central African populations have been decimated by poaching.

Conservationists have warned that African elephants could die out completely within 50 years if current trends of poaching and habitat loss continue.

The illegal trade in ivory is international. Poachers move across borders with near impunity, associated with government and organized crime.

Ivory sales were banned in 1989 by the international body CITES, but since that time, according to the organization, the ban has been continually weakened, and is today considered to sit at roughly the pre-1989 level.

Earlier this year, a joint report by conservation group Born Free USA and conflict analysis no-profit C4ADS found African poaching was becoming professionalized and militarized.

The report found that Zimbabwean poaching was tied to corruption, which is a different problem from the causes of poaching in less stable areas of Africa where there was not sufficient infrastructure to combat poaching.

By Sid Douglas

Memories are stored in neurons, not synapses, and therefore can be restored, shows new research

Memories are stored in nuclei, not synapses, and therefore can be restored, shows new research (2)
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Does the entire library of memories stored throughout our lifetime remain dormant within our minds, and can these memories be restored? New research has led UCLA neurobiologists to conclude that the storage mechanism for memories is actually independent of synaptic change–the mechanism that mediates the expression of memories. Rather, memories are stored in persistent epigenetic changes within the nuclei of neurons, and therefore memories are extremely stable over time and could be restored.

“The idea, long believed by most neuroscientists, that memories are stored in synapses may be incorrect. This implies that the apparent loss of a memory due to synaptic elimination might be reversible. Memories that appear to be lost forever may, in fact, be able to be fully restored,” Dr. David Glanzman, professor of integrative biology, physiology and neurobiology at UCLA and lead author of the study, told The Speaker.

So if the memories remain stored intact, why can’t we access them? The synapses that complete the circuit to the memories are destroyed or eliminated, Glanzman suspects. Glanzman qualified that the problem of memory storage was extremely complex and that he did not possess a complete answer, but he explained how his conception of memory formation was changed by the research.

“At present I believe that memories are formed in the brain by a combination of posttranslational changes—protein phosphorylation, protein dephosphorylation, etc.—gene transcription, protein synthesis and structural changes in neurons.  Pretty much everyone in the field of learning and memory also believes this.

Memories are stored in nuclei, not synapses, and therefore can be restored, shows new research (2)
Confocal fluorescence micrographs illustrating the structural effects of 5X5HT training, reconsolidation blockade, and chelerythrine treatment

“Where I differ is that I now believe that the storage mechanism for long-term memories is independent from the mechanism that mediates the expression of the memories, which is synaptic change,” Glanzman continued. “The storage mechanism, I believe, is persistent epigenetic changes within the nuclei of neurons.  Given this, I think that long-term memories are actually extremely stable; as long as the cell bodies of the neuronal circuit that contains the memory are intact, the memory will persist.  The memory can appear to be disrupted, however, by destroying or eliminating the synapses among the neurons in the neuronal circuit that retains the memory.  But the apparent elimination of a memory due to synaptic elimination can be reversed and the memory restored.  The data in our eLife study support this idea, although they do not explain how this is actually accomplished.”

In their research, the UCLA team studied Aplysia, a marine snail–particularly the way Aplysia learns to fear a memorable source of harm.

The team trained the snail to defend itself by withdrawing to protect its gills from the harm of mild electric shocks. The snail retained the withdrawal response for several days, indicating long term memory of the stimulus.

The team found that the shock caused serotonin to be released in Aplysia’s central nervous system. New synaptic connections grow as a result of the serotonin, according to the team. The formation of memories can be disrupted by interfering with the synthesis of the proteins that contribute to the new synapses.

When a snail was trained on a task but its ability to immediately produce the proteins was inhibited, the animal would not remember the training 24 hours later, the researchers found, but if an animal was trained and protein synthesis was inhibited later–after 24 hours–the animal would retain the memory. Memories once formed last in long-term memory, the team found.

They also performed experiments with neurons in a Petri dish, and found the same results.

Then the team tested memory loss. Again in a Petri dish, they manipulated synaptic growth with a protein synthesis inhibitor and with serotonin. They found that when they stimulated synaptic growth some time after creating a memory, new synapses grew–not the old ones that would have been stimulated if prevailing theories of memory formation were accurate.

The researchers found that the nervous system appears to be able to regenerate lost synaptic connections–reconnecting memories with new synapses.

Does that meant that the entire library of a life’s memories could be dormant and could be restored? Possibly, but not in all cases, according to the study. Glanzman used an example to explain what his research had suggested.

“That is a fascinating question,” said Glanzman.”For example, what about the phenomenon of infantile amnesia, that is, the inability of adults to retrieve episodic memories before the age of 2–4 years?  Can those episodic memories from our earliest years be restored?  I frankly don’t know, but I suspect that they can be.  It is possible that the explanation for infantile amnesia is similar to that of the phenomenon we examined in our study, reconsolidation blockade.  There, we found that the apparent elimination of the memory was the result of the reversal of the synaptic growth and, perhaps, of some of the epigenetic changes, such as histone acetylation, that mediated the expression of the memory.

“Notice that some epigenetic changes are intrinsically more stable than others.

“What if infantile amnesia is also a consequence of synaptic loss and reversible epigenetic changes, but that the memory persists as persistent epigenetic changes?  Then, just as we were able to restore memory in the snail following its disappearance due to reconsolidation blockade, we might be able to reverse infantile amnesia.  Similarly, some memories lost in the early stages of Alzheimer’s disease due to the synaptic destruction might be restorable.  However, once the cell bodies of the neurons that make up the memory circuit die, I believe the memory is lost forever.”

Before the recent research, memory was believed to be stored in synapses. Glanzman explained the traditional belief and the remaining challenges to the new theory.

“First, until my work is confirmed by others, it is not fair to say that neuroscientists are mistaken in their belief that long-term memory is stored at synapses.  The idea that memory is not stored at synapses is going to be met with a great deal of skepticism, as any radical new scientific idea should be.

“Having said that, the idea that memory is stored at synapses grew out of the pioneering work of the Spanish neuroanatomist Ramon y Cajal (who was awarded the Nobel Prize in 1906).  Cajal was one of the first to propose that learning and memory involves the growth of new synaptic connections among neurons in the brain.  This idea is now overwhelmingly accepted by neuroscientists.  I certainly believe—and scientific research on Aplysia and other animals confirms—that when an animal learns, synapses in its brain (or nervous system, in the case of the snail) physically change; in some instances the result is synaptic growth, whereas in others it is synaptic retraction.  (The specific pattern of synaptic change depends on the specific type of learning and the particular part of the brain that mediates the learning.)

“Given this, it is natural to think that new memories will be stored, at least in part, as persistent molecular or structural changes in the synapses that grew as the memories formed. It is this part of the synaptic hypothesis of long-term memory that I disagree with.”

The research is expected to hold new hope for sufferers of Alzheimers. Because in the early stages of the disease, synapses are destroyed–not neurons–those memories still exist and could be regained, Glanzman suspects.

The report, “Reinstatement of long-term memory following erasure of its behavioral and synaptic expression in Aplysia,” was completed by Shanping Chen, Diancai Cai, Kaycey Pearce, Philip Y W Sun, Adam C Roberts, and David L Glanzman, and was publied in eLife.

Photos: Christelle Nahas/UCLA

What causes cell division? Neither of the prevailing theories, but rather an extraordinarily simple quantitative principle of cell-size control, according to UC San Diego scientists

adder cell division
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How do cells control their size? What causes them to divide? Contrary to what many biologists have expected, evidence supporting an answer to one of the most fundamental and longstanding problems of biology has been accomplished by UC San Diego researchers. The study surprised even the researchers: a simple quantitative principle explains the phenomena without regard for either of the currently prevailing theories.

“Life is very robust and ‘plastic,’ much more than what biology textbooks tell us. Bacteria probably do not care when they should start replicating their genomes or dividing,” Dr. Suckjoon Jun, assistant professor of physics and molecular biology at the University of California, San Diego and one of the lead authors of the study, told The Speaker.

adder cell division
Dr. Suckjoon Jun

“Simple mathematical principles help us understand fundamental biology, just like in physics.”

How do cells control their size? What causes them to divide?

Biologists had previously posited two possible solutions: either a cell reaches a certain size, at which it divides into two smaller cells; or after a certain time has passed, the cell divides. The two theories have been known as “sizer” and “timer.”

The results surprised the researchers as well: “adder.”

“The results were completely unexpected,” Jun told us.

Rather than either sizer or timer paradigms, cells were found to add a constant volume each generation, regardless of their newborn size.

“This ‘adder’ principle quantitatively explains experimental data at both the population and single-cell levels, including the origin and the hierarchy of variability in the size-control mechanisms and how cells maintain size homeostasis,” the researchers concluded, whereas in past research based on “sizer” and “timer” theories led to difficult-to-verify assumptions or population-averaged data and varied interpretations.

Time and size, while variable in some organisms, do not even factor into the existence of “perfect adders” in the newly found and “extraordinarily simple” quantitative principle of cell-size control.

“It seems most bacteria we have studied so far, and more data is coming out of other labs, appear to be perfect adder,” said Jun. “Some higher organisms, such as yeast, do care about size more than bacteria do. For example, small-born yeast cells add more mass than large-adder cell divisionborn cells to reach division. That is, how much mass they add since birth is sensitive to how big the baby cell was. Nevertheless, the way they reach the target size, generation after generation, works exactly same as the perfect adders such as bacteria, which is quite nice and surprising.”

The growth of cells follow the growth law, the researchers found, and grow exponentially at a constant rate.

Jun explained the challenge that had stood in the way of understanding this aspect of cell division in the past: “Two biggest obstacles have been (one) dogmas that cells somehow must actively sense space or time to control cell size, and (two) technology that did not exist until recently, which now allows monitoring the growth and division patterns of tens of thousands of individual cells under tightly controlled environment.”

The research team developed a tiny device that isolates individual genetic materials.

The tool allowed the researchers to observe thousands of individual bacterial cells–Gram-negative E. coli and Gram-positive B. subtilis–over hundreds of generations. The researchers manipulated the conditions in which the cells lived. A wide range of tightly controlled steady-state growth conditions were experimented with.

According to the researchers, the new method allowed them to produce statistical samples about a thousand times better than had previosly been available.

“We looked at the growth patterns of the cells very very carefully, and realized that there is something really special about the way the cells control their size,” explained Jun.

“No one has been able to answer this question,” Jun said in their press release, noting that this was even the case for the E. coli bacterium, possibly the most extensively studied organism to date.

The research holds the promise of better informing the fight against cancer, since one of the most important problems in the fight is the process of runaway cell division.

The reports, “Cell-size maintenance: universal strategy revealed” and “‘Cell-size control and homeostasis in bacteria” were completed by Suckjoon Jun, Massimp Vergassola and Sattar Taheri-Araghi, and were published in the journal Current Biology .

Images: the work of the researchers