Friday, November 30, 2012

Qatari non-profit organization Gulf Organization for Research and Development (GORD) launched a low emissions car at the 2012 United Nations Climate Change Conference (COP 18) in Doha. The car was designed and developed in Qatar.

Revealed during a press conference at the Qatar National Convention Centre, the car in addition to an internal combustion engine, includes an automotive thermoelectric generator designed to capture waste heat to produce hydrogen. GORD expects the heat waste collecting system to be compatible with any gasoline or compressed natural gas car.

GORD chairman Dr Al-Horr summarised the key concepts of the invention in a statement saying, “Our car produces electricity at no cost by capturing thermal waste energy, reducing costs and eliminating the need for an external source of electricity. Also, bulky compressed-hydrogen cylinders are a thing of the past, as our concept accomplishes the production of hydrogen by using water through fuel cells integrated within the car.”

Most of the energy in Qatari vehicle comes from the the car’s gasoline tank, supplemented by a thin film photo-voltaic panel on the roof. Normally in a combustion engine, chemical energy stored in a fuel, such as gasoline, is converted into heat energy through combustion. This heat energy is then converted into mechanical energy, manifested as an increase in pressure in the combustion chamber due to the kinetic energy of the combustion gases. The kinetic energy of these combustion gases are then converted into work; because of the inefficiencies in converting chemical energy into useful work, internal combustion engines have a theoretical maximum effiecincy of 37% (with what is achievable in day to day applications being about half of this). Of the chemical energy in the consumed fuel used by an internal combustion engine 40% is dissipated as waste heat. However, the Qatari vehicle uses a thermoelectric generator to convert this waste heat into electricity. Such generators are used in space vehicles, and produce electricity when thermoelectric materials are subjected to a temperature gradient, the greater the gradient the greater the amount of electrcity produced. In the GORD vehicle the electricity produced is used to electrolyse potable water to produce hydrogen which can be introduced into the vehicle’s existing fuel system.

The researchers showed that the heat waste collection engine caused a decrease in the car’s emissions, including a decrease of carbon monoxide and nitrous oxide emissions by more than 50%, the fuel efficiency increasing by 20%. On its website, GORD said that the heat waste collector engine is universal, “Any car can be adapted to accommodate the system as it doesn’t alter any electro-mechanical systems”.

Tuesday, July 18, 2006

Temperatures as high as 111°F (48°C) have hit the United States today, a continuation of Monday’s triple-digit (Fahrenheit) record highs in some areas.

High energy costs have many elderly and low income citizens keeping the air conditioning off, fixed incomes being blamed in many cases. In response to this, cities such as Chicago and New York have turned some public facilities into “cooling areas” for the duration. Buildings being converted include homeless shelters, senior centers, libraries and shopping malls. State agencies are urging anyone experiencing heat related symptoms to get to one of these places as soon as possible.

Early reports are attributing at least three dead from heat related complications in Philadelphia, Arkansas, and Indiana

The National Weather Service has issued Red Flag warnings for six states, warning that the heat could easily lead to forest fires. Much of the northeast corridor and central plains states have been issued heat warnings.

Relief is in sight for the northeast, with storms bringing cooler weather from the Ohio Valley through New England; however the central part of the US won’t see a break in the heat until the weekend.

Wednesday, April 2, 2008

“Localization of ‘SEMI Safety Guideline'”, executed by Safety and Health Technology Center of Taiwan (SAHTECH) and supervised by Semiconductor Equipment and Materials International (SEMI), was announced today in Hsinchu, Taiwan.

This localization included several fields on health and safety of semiconductor manufacturing, certification testing on electrical devices, evaluations on fire or natural diseases, and environmental issues on semiconductor manufacturing devices, etc.. Companies and manufacturers from the semiconductor industry also paid more attentions on this guideline because issues on carbon-savings, earthquakes, fire diseases, and environment-efficiencies were included into this guideline.

On the other side of the incoming trade show of 2008 SecuTech Expo, scheduled after 2 weeks at Taipei World Trade Center, not only main fields on security devices, information security, and fire & disease preventions, the digital monitoring will be a hot topic in security industry. For applications on fire & disease preventions, because its issues contained industrial applications and ESH (Environmental, Safety & Health) managements, if a company want to decrease the ratio of fire disease or earthquake, companies from safety and related industries should pay more attentions on disease preventions.

Wednesday, May 13, 2009

In a videotape recorded prior to his murder on Sunday, Guatemalan lawyer Rodrigo Rosenberg accused President of Guatemala Álvaro Colom and his wife Sandra Torres of complicity in his violent death.

“If you are watching this message,” Rosenberg told the camera, “it is because I was assassinated by President Álvaro Colom with help from [private secretary to the president] Gustavo Alejos.”

In the video, distributed at his funeral, Rosenberg attributed the motive of the incipient murder to his representation of businessman Khalil Musa. Musa and his daughter Marjorie were murdered in April. Rosenberg alleged that Musa was killed because he was unwilling to enter into corrupt dealings at the behest of president Colom.

Presidential spokesperson Fernando Barrillas categorically rejected the accusations. “This reveals the intention of creating a political crisis around a case that should be investigated and processed by the courts,” he said in a statement posted on the official web site of the Guatemalan government. Barrillas also announced the intention to seek international help in the investigation of Rosenberg’s murder.

Rosenberg was shot on Sunday while riding his bicycle in Zone 14 of Guatemala City. His video statement has been posted to the YouTube web site.

Helen Mack of the Myrna Mack Foundation, a Guatemalan Human Rights organization, called for the video to be authenticated by experts, describing the investigation of the accusations as “rather difficult at a political level.” ^{((Translated from Spanish))Spanish: ?bastante difícil a nivel político.}

Sunday, November 20, 2005

One of the most important arguments in the run-up to the Iraq war made by Colin Powell in his United Nations speech and President Bush in his State of the Union address was that Iraq had an active biological weapons program and possessed mobile biological weapons labs. According to an investigation by the Senate Intelligence Committee, the main source for this information was an Iraqi defector codenamed Curveball who was a source for the German central intelligence agency BND.

Several German intelligence officials responsible for Curveball have now told the LA Times that the Bush administration and the CIA have repeatedly exaggerated his claims and ignored warnings of the BND that the source was unreliable. Recounting his reaction after seeing Powell’s United Nations speech one German intelligence officer said: “We were shocked. Mein Gott! We had always told them it was not proven…. It was not hard intelligence.” This corroborates reporting by the German weekly newspaper Die Zeit from 2003 and 2004 based on statements of unnamed senior German intelligence officials.

Nine months earlier, in May 2002, a fabricator warning was posted in Curveball’s file in U.S. intelligence databases. Powell was never warned that his United Nations speech contained material that both the DIA and CIA had determined was false, even though several people present at Powell’s CIA meetings were fully aware of this.

At this time German intelligence officers would not let the CIA meet directly with Curveball, but allowed a CIA doctor to draw blood samples. Questioning the validity of Curveball’s information in front of his CIA supervisor, the doctor was advised to “Keep in mind that this war is going to happen regardless of what Curveball said or didn’t say and the Powers That Be probably aren’t terribly interested in whether Curveball knows what he’s talking about.”

Shortly after Powell’s UN speech and several days before the invasion, United Nations weapons inspectors attempted to directly verify several key claims made by Curveball, but concluded that they were unsustainable. The White House insisted on its WMD claims based on Curveball’s information.

Even after the invasion, when more and more of Curveball’s accounts were shown to be pure fabrication, the CIA and the Bush administration relied on Curveball’s information. When U.S. forces discovered trucks with lab equipment and Curveball claimed that these were identical to the ones he has been reporting about, the CIA rushed to publish a White Paper claiming that these trucks were part of Saddam Hussein’s secret biological weapons program and Bush claimed publicly that “We found the weapons of mass destruction.” Several days later, twelve of the thirteen WMD experts who analyzed the trucks agreed that the equipment was not suited for biological weapons production, with the only dissenting voice coming from the author of the original White Paper.

The White Paper remains posted on the CIA website to this date, and President Bush has not yet retracted his statement that Iraq produced “germ warfare agents” made in his State of the Union address or his postwar assertions that “we found the weapons of mass destruction.”

Friday, May 22, 2020

A study published in journal Astronomy & Astrophysics last month reported astronomers from the European Southern Observatory (ESO) and elsewhere discovered a black hole in the Telescopium constellation. The study stated the black hole is about 1010 ± 195 light years (310 ± 60 parsec) away from the Solar System, meaning it is the nearest known black hole from the Earth. The nearest previously known black hole — V616 Mon — the study noted was usually estimated at more than 3000 light years away.

The black hole described in the study is located in the HR 6819 stellar system of Telescopium constellation, making it the first system visible to the naked eye to contain a black hole. HR 6819 contains two stars, and they are visible from the Southern Hemisphere. The astronomers started observing the system in 1999. Initially, they thought it was just a binary system, consisting of two stars. However, upon examination, the researchers concluded there was a third unseen object in the system. One of the two stars in the HR 6819 system is close to the black hole and orbits the black hole in just 40.333 ± 0.004 days.

This newly discovered black hole does not have an accretion disk. A black hole forms an accretion disk when a significant amount of matter orbits the black hole, as depicted in the image. Accretion disks often emit electromagnetic radiation. Since this black hole does not have an accretion disk, researchers had to rely on the gravitational effect of the black hole on the nearby star in order to discover it.

Researchers used the binary mass function to conclude the black hole had a mass of at least 4.2 M_? (Solar masses; 1 Solar mass = mass of the Sun). Its companion star, which orbits the black hole in about 40 days, is classified as a B3 III star. The outer star is classified as a Be star. Be stars rotate very quickly around their axes. Since the outer star rotates so rapidly, the star is not exactly spherical, but instead oblate, bulged at its equator, forming a gas disk around the equator.

The research suggested HR 6819 was very similar to another system LB-1. The HR 6819 system is estimated to be between 15–75 million years old (myr). The inner star has estimated mass of at least 6.3 ± 0.7 M_?. Using the mass and the speed at which the inner star rotates, the researchers concluded the black hole had an estimated mass of 5.0 ± 0.4 M_?. Researcher and co-author of the study Thomas Rivinius told Wikinews the inner star and the black hole are closer than the Sun and the Earth (1au; 150 million km; 93 million miles).

The researchers dedicated the paper to Stanislav Štefl, one of the fellow researchers who died in a car accident in 2014 in Santiago, Chile.

Wikinews caught up with Thomas Rivinius to discuss about this discovery.