نتایج جستجو برای: رتبهبندی qs

تعداد نتایج: 3143  

2015
Han-Shin Kim Sang-Hoon Lee Youngjoo Byun Hee-Deung Park

Pseudomonas aeruginosa is a well-known pathogenic bacterium that forms biofilms and produces virulence factors via quorum sensing (QS). Interfering with normal QS interactions between signal molecules and their cognate receptors is a developing strategy for attenuating its virulence. Here we tested the hypothesis that 6-gingerol, a pungent oil of fresh ginger, reduces biofilm formation and viru...

2016
Iain Welsby Sophie Detienne Francisca N’Kuli Séverine Thomas Sandrine Wouters Viviane Bechtold Dominique De Wit Romain Gineste Thomas Reinheckel Abdelatif Elouahabi Pierre J. Courtoy Arnaud M. Didierlaurent Stanislas Goriely

The adjuvant properties of the saponin QS-21 have been known for decades. It is a component of the Adjuvant System AS01 that is used in several vaccine candidates. QS-21 strongly potentiates both cellular and humoral immune responses to purified antigens, yet how it activates immune cells is largely unknown. Here, we report that QS-21 directly activated human monocyte-derived dendritic cells (m...

1991
V. P. BELAVKIN

A generalized definition of quantum stochastic (QS) integrals and differentials is given in the free of adaptiveness and basis form in terms of Malliavin derivative on a projective Fock scale, and their uniform continuity and QS differentiability with respect to the inductive limit convergence is proved. A new form of QS calculus based on an inductive ⋆–algebraic structure in an indefinite spac...

2013
Sunyoung Kim Jungwook Park Ji Hyeon Kim Jongyun Lee Bongjun Bang Ingyu Hwang Young-Su Seo

Burkholderia glumae causes rice grain rot and sheath rot by producing toxoflavin, the expression of which is regulated by quorum sensing (QS). The QS systems of B. glumae rely on N-octanoyl homoserine lactone, synthesized by TofI and its cognate receptor TofR, to activate the genes for toxoflavin biosynthesis and an IclR-type transcriptional regulator gene, qsmR. To understand genome-wide trans...

2010
Manuel Kirschner Raffaella Bernardi

A central problem in Interactive Question Answering (IQA) is how to answer Follow-Up Questions (FU Qs), possibly by taking advantage of information from the dialogue context. We assume that FU Qs can be classified into specific types which determine if and how the correct answer relates to the preceding dialogue. The main goal of this paper is to propose an empirically motivated typology of FU ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Hui Fan Yihu Dong Donghui Wu Matthew W Bowler Lianhui Zhang Haiwei Song

The human pathogen Pseudomonas aeruginosa coordinates the expression of virulence factors by using quorum sensing (QS), a signaling cascade triggered by the QS signal molecule and its receptor, a member of the LuxR family of QS transcriptional factors (LasR). The QS threshold and response in P. aeruginosa is defined by a QS LasR-specific antiactivator (QslA), which binds to LasR and prevents it...

2016
Lei Feng Qingqing Xiang Qing Ai Zhengli Wang Yunhui Zhang Qi Lu

BACKGROUND Quorum sensing (QS) systems play an important role in modulating biofilm formation. Recent studies have found that the QS molecules had complex effects on the host immune systems. In addition, regulatory T cells (Tregs), known as important negative regulators in the immune system, have been found upregulated in multiple chronic infections. Therefore, the QS systems were hypothesized ...

Journal: :ACS synthetic biology 2014
Anand Pai Jaydeep K Srimani Yu Tanouchi Lingchong You

Quorum sensing (QS) enables bacteria to sense and respond to changes in their population density. It plays a critical role in controlling different biological functions, including bioluminescence and bacterial virulence. It has also been widely adapted to program robust dynamics in one or multiple cellular populations. While QS systems across bacteria all appear to function similarly-as density...

Journal: :Journal of microbiology, immunology, and infection = Wei mian yu gan ran za zhi 2011
Khee Hoon Koh Foong-Yee Tham

The misuse of antibiotics has contributed to widespread development of antimicrobial resistance among clinically significant bacterial species. Alternative approaches other than those using antibiotics are needed in the fight against infectious diseases. Quorum sensing (QS) is an intercellular signaling and gene regulatory mechanism, which is used by a number of opportunistic pathogenic bacteri...

Journal: :The British journal of educational psychology 2012
Hans van der Meij Jan van der Meij

BACKGROUND QuikScan (QS) is an innovative design that aims to improve accessibility, comprehensibility, and subsequent recall of expository text by means of frequent within-document summaries that are formatted as numbered list items. The numbers in the QS summaries correspond to numbers placed in the body of the document where the summarized ideas are discussed in full. AIM To examine the in...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید