Home » Posts tagged 上海夜网AB

FDA has new test for possible bioterror agents

first_img In the report, Wilkes and colleagues describe how they tested pyrolysis mass spectrometry on the foodborne pathogens Vibrio parahaemolyticus and Salmonella enterica, a mosquito-control product containing Bacillus thuringiensis, and several inert powders. (B thuringiensis was used in a bioterrorism hoax in 2001 in which a rapid screening kit wrongly identified the material as anthrax, the report says.) Aug 3 FDA news releasehttp://www.fda.gov/bbs/topics/NEWS/2006/NEW01424.html Research report in Rapid Communications in Mass Spectrometry Aug 4, 2006 (CIDRAP News) – The Food and Drug Administration (FDA) says it is developing a technology that can identify real or fake bioterrorism agents faster and more cheaply than existing methods. “The testing process works in a way similar to the FBI’s fingerprint library for criminals,” the FDA said. “A researcher can take patterns generated by a mass spectrometer’s analysis of a substance to be identified and compare them to a database of known substances, for immediate recognition.” “We hope to see the testing put into place by government and industry in the near future,” said Dr. John Wilkes, PhD, of the FDA’s National Center for Toxicological Research, lead author of the research report. The technique uses mass spectrometry to sort out different species and strains of bacteria and distinguish them from inert substances such as flour and cornstarch, often used in bioterrorism hoaxes, the FDA said in a news release yesterday. Mass spectrometry sorts ionized particles according to their weight, usually by passing them through a magnetic field and then using a photographic plate or some other device to trace their different paths.center_img The FDA said it is working with an industrial firm under a Cooperative Research and Development Agreement to commercialize the technique for quality control in food manufacturing and for counterterrorism applications. Many other tests use DNA amplification via polymerase chain reaction, which costs from $15 to $50 per sample and takes about 24 hours, the FDA said. Also, such tests can’t identify substances containing no DNA, such as poisons, RNA viruses, or organic chemicals, according to the research report. See also: The technique distinguished the bacterial samples from the inert powders and the Vibrio from the Salmonella species, according to the report. Further, the investigators were able to distinguish two different Vibrio strains and two S enterica serotypes. They even distinguished the mosquito-control product, a mixture of bacteria and other substances, from the other bacteria and powders. With the new technique, it takes 3 to 8 hours to prepare a sample for testing but only about 7 minutes to run the test, the FDA said. The cost is as low as $2 per sample. The FDA’s technique, called pyrolysis mass spectrometry, uses heat to vaporize the substance to be tested and then bombards it with argon atoms to cause ionization, according to a report by the FDA researchers in the journal Rapid Communications in Mass Spectrometry.last_img read more

Continue reading

PREMIUMJakarta’s ‘flood control’ under fire as thousands displaced

first_imgFacebook #flooding flood-control flood flood-mitigation #AniesBaswedan anies-baswedan Greater-Jakarta #Jakarta Linkedin The frequent heavy inundation caused by extreme rainfall and river floods across Jakarta since New Year’s Eve has raised questions about the city’s flood management capacity.Floodwaters in several areas of the capital Jakarta had just begun to recede on Monday morning, but heavy rains again battered the city overnight to cause mild to severe flooding on Tuesday morning that paralyzed traffic on several major streets.According to PetaBencana.id, which provides real-time flood information, 87 areas across the city had reported floods by 8:53 a.m. on Feb. 25.With Tuesday’s flooding, several Commuter train lines and Transjakarta bus routes serving Greater Jakarta have been disrupted for two consecutive days. Several major train stations were closed on Tuesday due to the flooding, including Ga… Topics : LOG INDon’t have an account? Register here Forgot Password ? Log in with your social account Googlelast_img read more

Continue reading

Liverpool hit four second-half goals to sink Dortmund in incredible comeback

first_imgDejan Lovren scored in stoppage time as Liverpool came back from 3-1 down to beat Borussia Dortmund 4-3 and book their place in the semi-finals of the Europa League.The Reds mounted a sensational fightback after finding themselves 2-0 down after nine minutes courtesy of Henrikh Mkhitaryan and a fine strike from Pierre-Emerick Aubameyang.Jurgen Klopp’s side did not let their heads drop though and reduced their deficit at the start of the second half when the impressive Divock Origi netted.Marco Reus gave the visitors another two-goal cushion to dent the Reds’ challenge before Philippe Coutinho scored to make it 3-2.Mamadou Sakho scored with a later header to set up a dramatic finale before Lovren scored a rare goal in the dying minutes to make it 5-4 on aggregate and seal a memorable European night for the home side.  – Follow Joy Sports on Twitter: @JoySportsGH. Our hashtag is #JoySportslast_img read more

Continue reading