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Antibiotic breakthrough:Team discovers how to overcome gram-negative bacterial defenses
Antibiotic breakthrough gram-negative bacterial defenses
2017/7/20
Scientists report that they now know how to build a molecular Trojan horse that can penetrate gram-negative bacteria, solving a problem that for decades has stalled the development of effective new an...
‘Negative mass’ created at Washington State University
Negative mass Washington State University
2017/4/27
Washington State University physicists have created a fluid with negative mass, which is exactly what it sounds like. Push it, and unlike every physical object in the world we know, it doesn’t acceler...
Concurrent heat waves,air pollution exacerbate negative health effects of each
Concurrent heat waves air pollution exacerbate negative health
2017/3/14
The combination of prolonged hot spells with poor air quality greatly compounds the negative effects of each and can pose a major risk to human health, according to new research from the University of...
Negative feedback loops help maintain function of mutated proteins
Negative feedback loops maintain function mutated proteins
2016/7/4
Negative feedback is a universal control mechanism that lets a system’s output throttle its input. If an engine revs up, negative feedback tapers its power source. But if the engine slows down, it re-...
New Study Exposes the Growing Problem of Patent Aggregators and Aggregators’ Negative Impact on Innovation in the United States
Patent Aggregators Negative Impact on Innovation United States
2016/5/6
The new study, co-authored by Professor Lauren Cohen of Harvard Business School, Professor Umit Gurun of the University of Texas at Dallas, and Dr. Scott Duke Kominers, a Junior Fellow at th...
Challenging Negative Stereotypes to Narrow the Achievement Gap（图）
Challenging Negative Stereotypes Narrow the Achievement Gap
2015/7/13
Negative stereotypes can work in subtle but powerful ways to sap confidence in the classroom. Girls and minorities may fear that a bad grade will confirm negative stereotypes about their intelligence,...
Challenging Negative Stereotypes to Narrow the Achievement Gap（图）
Challenging Negative Stereotypes Narrow the Achievement Gap
2015/7/13
Negative stereotypes can work in subtle but powerful ways to sap confidence in the classroom. Girls and minorities may fear that a bad grade will confirm negative stereotypes about their intelligence,...
Electricity from biomass with carbon capture could make western U.S. carbon-negative（图）
Electricity biomass carbon capture western U.S. carbon-negative
2015/3/4
Generating electricity from biomass, such as urban waste and sustainably-sourced forest and crop residues, is one strategy for reducing greenhouse gas emissions, because it is carbon-neutral: it produ...
16 March 2007，Naturally occurring materials have a positive index of refraction, whereas a negative-index metamaterial (NIM) has a structure that is engineered artificially to have a negative index of...
7 February 2007，The Health Protection Agency (HPA) can confirm that tests for H5N1 avian flu carried out on a worker involved in the current outbreak on a farm in Suffolk were negative. The patient al...