A new mouthwash developed by a microbiologist at the UCLA School of Dentistry is highly successful in targeting the harmful Streptococcus mutans bacteria that is the principal cause tooth decay and cavities.
In a recent clinical study, 12 subjects who rinsed just one time with the experimental mouthwash experienced a nearly complete elimination of the S. mutans bacteria over the entire four-day testing period. The findings from the small-scale study are published in the current edition of the international dental journal Caries Research. (more…)
In Africa 140 years ago, David Livingstone, the Victorian explorer, met Henry M. Stanley of the New York Herald and gave him a harrowing account of a massacre he witnessed, in which slave traders slaughtered 400 innocent people. Stanley’s press reports prompted the British government to close the East African slave trade, secured Livingstone’s place in history and launched Stanley’s own career as an imperialist in Africa.
Today, an international team of scholars and scientists led by Dr. Adrian Wisnicki of Indiana University of Pennsylvania, publishes the results of an 18-month project to recover Livingstone’s original account of the massacre. The story, found in a diary that was illegible until it was restored with advanced digital imaging, offers a unique insight into Livingstone’s mind during the greatest crisis of his last expedition, on which he would die in 1873. (more…)
Economists have long suspected that one reason developing countries struggle to emerge from poverty is that they lack robust financial sectors, especially when compared to wealthier nations.
Although it may seem obvious that a weak financial sector would stifle growth within a developing country, few economists until now have tried to determine just how this phenomenon occurs. This has made it difficult for policymakers and investors to understand how financial markets may be failing and to create effective solutions to correct them.
Economists Francisco J. Buera of UCLA and the Federal Reserve Bank of Minneapolis, Joseph Kaboski of the University of Notre Dame, and Yongseok Shin of Washington University in St. Louis present important insights into this phenomenon in a paper recently published in the journal American Economic Review. (more…)
*Research could lead to techniques to improve fertilization in humans*
In new research that could have implications for improving fertilization in humans and other mammals, life scientists studied interactions between individual sperm and eggs in red abalone, an ocean-dwelling snail, and made precise chemical measurements and physical models of these interactions. They are the first scientists to do so.
By simulating the natural habitat of the abalone in the laboratory, the scientists were able to determine the conditions under which sperm–egg encounters and fertilization were most likely to occur. (more…)
*UCLA students set organic chemistry to music, from Beatles to Lady Gaga*
By now, the word is out at UCLA that undergraduates in Neil Garg’s organic chemistry course produce clever, creative music videos as an extra-credit assignment. The bigger secret may be just how much chemistry they learn by doing so, as none of them are chemistry majors and most admit they didn’t like chemistry when the class started.
It’s a little too soon to say which music video will be this year’s sensation. A strong candidate is “We’re Yours” by the Gargonauts — Rachel Stafford-Lewis, Myan Pham, Ali Lanewala and Jordan Halfman — which achieves the desired trifecta of excellent chemistry in a video that sounds and looks great. But unlike last year, when one video, “Chemistry Jock” — which has become the gold standard of the genre, with 38,000 YouTube views and many fans — ran away from the competition, this year’s field is much deeper. (more…)
As the world’s leading authority on beads manufactured from shells by California’s Chumash Indians, UCLA archaeologist Jeanne Arnold was stumped by a series of anomalous artifacts excavated at former settlements on the Channel Islands.
Pierced with more than one hole, often at unconventional angles or too close to the edges, the oddly configured multi-hole beads differ considerably from the smooth, round, precisely drilled beauties that served as currency among the Chumash prior to the arrival of Europeans in Southern California. (more…)
*California’s aging LGB population is set to double in next 20 years*
Members of California’s aging lesbian, gay and bisexual population are more likely to suffer from certain chronic conditions, even as they wrestle with the challenges of living alone in far higher numbers than the heterosexual population, according to new policy brief from the UCLA Center for Health Policy Research.
Half of all gay and bisexual adult men in California between the ages of 50 and 70 are living alone, compared with 13.4 percent of heterosexual men in the same age group. And although older California lesbians and bisexual women are more likely to live with a partner or a family member than their male counterparts, more than one in four live alone, compared with one in five heterosexual women. (more…)
