Tag: 天津大活便宜又好的地方

Bahrain : RSF and 56 other NGOs call for Bahraini blogger’s release

first_imgThe joint letter also calls for an independent and impartial investigation into the mistreatment that Rajab has reportedly received while in prison.  December 18, 2018 Bahrain : RSF and 56 other NGOs call for Bahraini blogger’s release Help by sharing this information to go further RSF and the 56 other NGOs are concerned that the date on which the court is due to issue its ruling on his appeal, 31 December, has been deliberately chosen by the Bahraini authorities in order to impose an even harsher sentence on Rajab that will trigger few protests from the international community because of the New Year celebrations. RSF_en Held since June 2016, Rajab is appealing against the five-year jail sentence he received in February 2018 for tweets criticizing conditions in a Bahraini prison and the Saudi-led military intervention in Yemen. He received a separate two-year prison sentence in July 2017 for criticizing the Bahraini authorities in TV interviews. News Receive email alerts A total of 15 journalists and citizen-journalists are currently detained in connection with the provision of news and information in Bahrain, which is ranked 166th out of 180 countriesin RSF’s 2018 World Press Freedom Index. Related documents open_letter_to_bahraini_authorities-_drop_all_charges_and_release_nabeel_rajab_-_ifex.pdfPDF – 106.88 KB Read the joint  letter, in the original English, below. BahrainMiddle East – North Africa Condemning abusesProtecting journalists ImprisonedCitizen-journalistsFreedom of expression As a Bahraini court prepares to rule on blogger and human rights defender Nabeel Rajab’s appeal, Reporters Without Borders (RSF) and 56 other human rights NGOs have written a joint open letter calling on the Bahraini authorities to free Rajab at once, overturn his convictions and drop all charges against him.center_img March 17, 2021 Find out more BahrainMiddle East – North Africa Condemning abusesProtecting journalists ImprisonedCitizen-journalistsFreedom of expression German spyware company FinFisher searched by public prosecutors Tenth anniversary of Bahraini blogger’s arrest News October 14, 2020 Find out more Organisation Follow the news on Bahrain June 15, 2020 Find out more News Coronavirus “information heroes” – journalism that saves lives Newslast_img read more

The archaeology of plaque (yes, plaque)

first_img By precisely gauging the age of juvenile fossils, researchers show how early human ancestors were unique She also investigates paleofeces, and another project in her lab focuses on understanding recent evolution in the gut microbiome. “A number of studies have shown that the gut microbiome of traditional societies around the world is very differently structured than that of industrialized populations. We can tell that it is the industrialized gut microbiome that has changed, but the question is: Over what time scale? Is it 100 years? A thousand years? Ten thousand years? What caused it to shift? Was it agriculture? Was it industrialization?”Answering those questions, Warinner said, is important from a public health perspective as well as a historical one.“The thing that characterizes, more than anything else, the industrialized gut microbiome is a lack of diversity,” she said. “Microbial loss may lead to reduced resiliency and a higher susceptibility to disease. Conditions like Crohn’s disease, IBD [inflammatory bowel disease], and many gastrointestinal disorders share, as a common feature, reduced or altered microbial diversity, and it may be that there’s something about our current, industrialized diet that is driving this pattern.”In addition to modern ailments, Warinner’s work has also shed light on one of the most mysterious puzzles in medical history — the cause of a 16th-century epidemic that decimated the indigenous populations of colonial Mexico and Central America, and that was known only as cocoliztli, the Aztec word for “pestilence.”“Most people know that when the Spanish came to the Americas they introduced a number of diseases,” she said. “In the 16th century alone, there were 11 documented epidemics, including an outbreak of smallpox in 1520 that contributed to the fall of the Aztec Empire. However, the worst epidemic — the one considered to be the single greatest killer in terms of loss of life — occurred two decades later in 1545, and neither the Spanish nor the Aztecs knew what it was.”Though researchers had debated the exact nature of the epidemic for more than four centuries, with hypotheses ranging from influenza to plague to hemorrhagic fever, there was scant evidence to support any one theory.In 2006, Warinner, then a grad student, was part of a team of archaeologists who stumbled onto a mass burial site for cocoliztli victims, but it wasn’t until 2018 that she and colleagues at the Max Planck Institute finally were able to identify a rare strain of Salmonella enterica that they believe was responsible for the epidemic.Warinner has also used the study of dental calculus to shed light on cultural practices, including the production of medieval books.“Several years ago, we started a study on periodontal disease and as part of that study we analyzed the teeth of individuals buried at a small medieval monastery in Germany. Quite unexpectedly, we found that one woman’s dental calculus was full of blue crystals we later determined to be pigment from lapis lazuli,” she said. “At the time, that was one of the rarest and most expensive mineral pigments in Europe, and the only explanation that made sense was that she must have used the pigment, likely as an illustrator. Only a very skilled artist would have been entrusted with such a valuable substance, and here it was on the teeth of a woman buried at a rural women’s religious community. So this discovery revealed new information about trade routes and the more extensive use of this pigment during this early time period, as well as the involvement of women in art.”,Warinner has also been using dental calculus to investigate the origins of dairying and how and when it spread across Europe and Asia.“By looking at when and where animal milk proteins first appear in people’s dental calculus, we are able to reconstruct the prehistory of dairying across the world — where it started, how it moved, where it spread,” she said. “That was hard to do before. It’s a really crucial part of human history for more reasons than people realize.”Warinner’s work on dairying, however, is about more than tracing the spread of a key cultural practice — it is also revealing new insights into lactose intolerance.Virtually all mammals can digest the milk sugar lactose as infants, and they do this by producing the enzyme lactase. However, they stop producing this enzyme as they get older, which is part of the weaning process. This is also true for most humans. For some time, researchers have known that the ability to digest lactose into adulthood is the result of genetic mutations that arose independently in European, Middle Eastern, and East African populations, and each time in cultures long associated with dairying. Thus, “lactose intolerance” is not really a disease, but rather the ancestral condition of humans. The ability to produce lactase into adulthood, known as lactase persistence, is a relatively recent adaptation.“We knew dairying began in the Neolithic,” Warinner said. “So we thought we would find lactase persistence in the first farmers. Once ancient DNA technology came along, people began testing Neolithic farmers by the hundreds, and none of them had it. We now know there’s a time gap of about 4,000 years between when people first started dairying and when the first lactase persistence adaptations appear, so for 4,000 years people who should be lactose intolerant were dairying.” Digging up the past Not many people can get excited about plaque, but Christina Warinner loves the stuff.The recently appointed assistant professor of anthropology in FAS and Sally Starling Seaver Assistant Professor at the Radcliffe Institute, Warinner was among the first researchers to realize that calcified plaque, otherwise known as dental calculus, could shed new light on everything from ancient diet and disease to the spread of dairying and the roles of women in society.“It’s like a time capsule,” she said. “It’s the single richest source of ancient DNA in the archaeological record. There are so many things we can learn from it — everything from pollution in the environment to people’s occupations to aspects of health. It’s all in there.”And it was a discovery, Warinner said, that happened almost entirely by accident.After receiving her Ph.D. from the Graduate School of Arts and Sciences in the Anthropology Department’s archaeology program, the Kansas native took a postdoc at the University of Zurich in what was then the new Center for Evolutionary Medicine. There she set out to investigate whether it would be possible to identify pathogens in the archaeological record to study the evolution of diseases. She chose dental caries, or cavities, as a case study, because they are visible amid skeletal remains and abundant in the archaeological record. She set out to examine whether the bacteria that caused caries in ancient teeth could be identified genetically.“I started to notice all this dental calculus, which is very common on teeth, and was always getting in the way,” she said. “Most people would just take it off and throw it away, but I thought it could be interesting, so I turned that thought around and looked at it from a different angle.“As a side project, I started applying genomic and proteomic techniques to it, which hadn’t been done before,” she continued. “It’s not perfect, and not everything preserves … but it turns out we can say an awful lot about the past through calculus.”Applying genomic tools has allowed Warinner to get the clearest picture yet of not only ancient genomes, but ancient microbiomes as well.“We have a project running now on the evolution of the oral microbiome where we are comparing looking at New World monkeys, gorillas, chimpanzees, Neanderthals, and a diverse range of humans,” she said. “We’re looking to see if there are shifts in oral microbial communities through time, and whether functional shifts might indicate changes in diet or other adaptations.” “[Plaque is] like a time capsule. It’s the single richest source of ancient DNA in the archaeological record. There are so many things we can learn from it — everything from pollution in the environment to people’s occupations to aspects of health. It’s all in there.” — Christina Warinner Related Reading teeth The Daily Gazette Sign up for daily emails to get the latest Harvard news. Study uses rings in teeth to understand the environment Neanderthals faced Warinner suspects that the right community of gut microbes may help protect people from lactose intolerance. She explains that the work raises a host of important questions about how changes in diet affect the microbiome, and how that may cause or protect against certain conditions that can’t be explained by genetics alone.“This is a case where we thought we really understood how a disorder — lactose intolerance — worked, and now we’re realizing it is so much more complex and different than we thought,” she said. “But this also suggests that our bodies can adapt to changes in many different ways.”Ultimately, Warinner said, her goal is to illuminate some of the largest questions in human history using some of the humblest of materials.“We’re taking a whole new look at the past, and instead of only focusing on big, obvious artifacts, we’re looking at all the dust and debris — all the things people have ignored,” she said. “One of the ways I describe this work is that it is the archaeology of the invisible. And dental calculus, this stuff most people pay a lot of money to get rid of, it turns out it’s really valuable.” Archaeologist works with tribe to explore its history and to repair historic injustices The teeth tell a talelast_img read more

Angry Maradona Seeks Argentina Job

first_imgAFTERMATH OF LOSS TO NIGERIAFemi SolajaAftermath of the crushing 4-2 defeat Albiceleste suffered against the Super Eagles on Tuesday evening in an International friendly in Russia, Argentine football legend, Diego Maradona, yesterday criticised the faltering team. Now, Maradona wants another chance to lead the team to the World Cup next year as head coach. Maradona, who last managed Argentina at the 2010 World Cup in South Africa, dismissed the current set up led by Coach Jorge Sampaoli in an Instagram message moments after the team succumb to the defeat to Nigeria.“I am angry because they have thrown away our prestige, but it’s not the fault of the lads,” he said. “I want to come back!!!”The former player who single handedly gave Argentina the 1986 World Cup title is currently the coach of United Arab Emirates side Al Fujairah.He posted statistics of 11 recent Argentina managers that showed his success rate was 75 per cent, greater even than that of Cesar Luis Menotti, who won the World Cup in 1978, and Carlos Bilardo, who lifted the trophy in 1986 when Maradona was at his brilliant playing best.“Who won most??” Maradona wrote. “We draw our own conclusions.”The former Boca Juniors and Napoli striker led Argentina to the quarterfinals in South Africa, where they were knocked out by Germany.Current coach, Sampaoli, has had a bad start in his tenure since taking charge in June, winning four of his first eight games, but only one of four competitive fixtures.The Argentines relied on Messi’s brilliance to beat host Ecuador to qualify for the Russia 2018 on the last day of the South American series.In a related development, FC Barcelona defender and Captain of the losing Argentina side on Tuesday, Javier Mascherano, has commended the brilliant display of the Super Eagles and singled out Alex Iwobi as the man that tormented his side most.Although the defender consoled himself that it’s better to lose in the flattering defeat now than at the World Cup, he however admitted that the Nigerian team is the most physical side the country had met in the recent time.“Nigerians are very strong both on and off the ball and may be we should have defended better but their second goal was well taken by Arsenal lad (Alex Iwobi) then the fourth goal by same player killed the game off,” remarked the defender who was nutmegged by the Arsenal player before the final goal.According to www.barcelonalive.com, aside Sergio Kun Aguero who did nor finish the match due to exhaustion at interval, Mascherano too is in doubt to be available for the Spanish giants this weekend in the La Liga as he suffered hamstring injury and likely to be out for four weeks.Share this:FacebookRedditTwitterPrintPinterestEmailWhatsAppSkypeLinkedInTumblrPocketTelegramlast_img read more