A step forward to fusion energy

Fusion reactions happens in Sun's core.
Image credit: wikipedia

The ignition is an essential part to make possible a viable alternative source of energy, but has not yet been reached. An important step on the way to the ignition is having the energy generated by fusion reactions, confined to a plasma, exceeds the amount of energy stored in the deuterium-tritium fuel and during the implosion, resulting in a gain of energy. In the article published in Nature, scientists at LAWRENCE LIVERMORE NATIONAL LABORATORY revealed that they acquired energy gains by manipulating the laser to reduce instability in the implosion.
More info: New Observer
Scientific paper: NATURE

Curved Paths

"Some problems founds in teaching physics related to curved paths that are unfortunately only described as illustration. A simple way to introduce the path is presented, which can help students to test their concept numerically. The procedure is limited into semi-circle and straight sub-paths. Smaller discretizing width $\Delta{}s$ gives better form of the produced path." (Sparisoma Viridi)

"A program called SCSPG (Semi-Circle Segmented Path Generator) is presented in this report. How it works is described and an example of it is illustrated using a case of work of friction along a curved path. As a benchmark for the program, work of friction along straight path is calculated and then compared to theoretical prediction." (Sparisoma Viridi, Siti Nurul Khotimah) 

Just remember the Physics Laws of Motion (video from Exam Fear Videos):

EPL paper from Space

Euro Physics Letters received its first paper from space.
Concerned with the properties of complex plasma in almost zero gravity conditions, the paper represents collaborative research of 29 individual missions performed over the last 10 years by German and Russian researchers aboard the International Space Station (ISS).

To read the full article and download (for free) the papers, visit: PhysOrg.com

CO2 to CH4

English version:

Japanese researchers announced today that they had discovered a way to turn carbon dioxide (CO2) captured and stored in the soil to methane (CH4), which can help the combat against greenhouse effect and produce natural gas.

This conversion process is to capture the CO2 underground, using a bacterium, discovered off the northern coast of the large Japanese island of Honshu, on the seabed, to convert CO2 into CH4.
"The biggest difficulty is to strengthen the bacteria to accelerate the generation of methane," explained a spokesman for the Japanese research agency.
In its natural state, this transformation will take several thousands of years, but the researchers hope to develop technology to reduce this period to one hundred years. So could become one of the greatest hopes in the fight against global warming.

imagem ecodebate

Versão Portuguesa:

Investigadores japoneses anunciaram, hoje, ter descoberto um meio de transformar o dióxido de carbono (CO2) captado e armazenado no solo em metano (CH4), o que pode ajudar a combater o efeito estufa e a fabricar gás natural.

Este processo de conversão consiste em capturar o CO2 no subsolo e utilizando uma bactéria, descoberta ao largo das costas setentrionais da grande ilha japonesa de Honshu, no solo oceânico, para converter o CO2 em CH4.
"A maior dificuldade é reforçar a bactéria para acelerar a geração do metano", explicou um porta-voz da agência de investigação japonesa.
No seu estado natural, esta transformação demora vários milhares de anos, mas os investigadores esperam desenvolver técnicas que permitam reduzir este período para uma centena de anos. Assim poderá tornar-se numa das grandes esperanças na luta contra o efeito estufa.

adaptado de SIC online

imagem ecodebate

Versión Española:

Investigadores japoneses anunciaron hoy que habían descubierto una manera de transformar el dióxido de carbono (CO2) capturado y almacenado en el suelo para el metano (CH4), que puede ayudar a combatir el efecto de calentamiento global y producir gas natural.
Este proceso de conversión es capturar el CO2 al subterráneo, utilizando una bacteria descubierta en la costa norte de la isla japonesa de Honshu, en el hondo del mar, haciendo la conversión de CO2 a CH4.
"La dificultad más grande es el fortalecimiento de las bacterias para acelerar la generación de metano", explicó un portavoz de la agencia de investigación japonés.
En su estado natural, esta transformación se llevará a varios miles de años, pero los investigadores esperan desarrollar la tecnología para reducir este período a cien años. Así que podría convertirse en una de las grandes esperanzas en la lucha contra el calentamiento global.

adaptado de SIC online

imagem ecodebate

Artigos da SciAm

Some articles to read:

Aqui vai alguns artigos que valem a pena ler:

Aqui ván algunos articulos para lectura:

Why we feel hot when body has the same temperatura as air?

Electric scooter built for two