منابع مشابه
How Bacteria Shift Gears
Bacteria can change course almost instantaneously, zipping towards food or away from toxins. How do such simple organisms do something so complex? It’s all in the flagella, a tail-like structure with rotating helical filaments. The flagella work in unison to propel the cell forward by rotating counterclockwise and thus bundling together. When the flagella reverse their rotation to clockwise, th...
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This pilot study investigated the pathogens that nurses are potentially bringing into the public and their home when they wear work uniforms outside of the work environment. To achieve this, sterilized uniforms were distributed to 10 nurses at a local hospital in Washington State at the beginning of their shift. Worn uniforms were collected at the end of the shifts and sent to a laboratory for ...
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Elevated blood pressure is a major modifiable risk for cardiovascular disease (CVD) and the leading cause of preventable death worldwide. Current estimates indicate that 7.6 million premature deaths and 92 million disabilityadjusted life years are attributable to suboptimal blood pressure.1 Most of the lifestyle causes of hypertension are well known, and clinical trials provide clear evidence t...
متن کاملHow to color shift hypergraphs
Let g(k) denote the minimum integer m so that for every set S of m integers there is a k-coloring of the set of all integers so that every translate of S meets every color class. It is a well known consequence of the Local Lemma that g(k) is finite for all k. Here we present a new proof for this fact, that yields a very efficient parallel algorithm for finding, for a given set S, a coloring as ...
متن کاملHow honey kills bacteria.
With the rise in prevalence of antibiotic-resistant bacteria, honey is increasingly valued for its antibacterial activity. To characterize all bactericidal factors in a medical-grade honey, we used a novel approach of successive neutralization of individual honey bactericidal factors. All bacteria tested, including Bacillus subtilis, methicillin-resistant Staphylococcus aureus, extended-spectru...
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ژورنال
عنوان ژورنال: PLoS Biology
سال: 2011
ISSN: 1545-7885
DOI: 10.1371/journal.pbio.1001061