نتایج جستجو برای: lifetime testing

تعداد نتایج: 389779  

2017
Mengyan Wang Feng Tang Xiaobo Pan Longfang Yao Xinyi Wang Yueyue Jing Jiong Ma Guifang Wang Lan Mi

A method of rapidly differentiating lung tumor from healthy tissue is extraordinarily needed for both the diagnosis and the intraoperative margin assessment. We assessed the ability of fluorescence lifetime imaging microscopy (FLIM) for differentiating human lung cancer and normal tissues with the autofluorescence, and also elucidated the mechanism in tissue studies and cell studies. A 15-patie...

Journal: :Archives of dermatology 2008
Deann Lazovich Jo Ellen Stryker Joni A Mayer Joel Hillhouse Leslie K Dennis Latrice Pichon Sherry Pagoto Carolyn Heckman Ardis Olson Vilma Cokkinides Kevin Thompson

OBJECTIVE To develop items to measure indoor tanning and sunless tanning that can be used to monitor trends in population surveys or to assess changes in behavior in intervention studies. DESIGN A group of experts on indoor tanning convened in December 2005, as part of a national workshop to review the state of the evidence, define measurement issues, and develop items for ever tanned indoors...

2012
Brian W. Pence Kristen Shirey Kathryn Whetten Bernard Agala Dafrosa Itemba Julie Adams Rachel Whetten Jia Yao John Shao

BACKGROUND In high income nations, traumatic life experiences such as childhood sexual abuse are much more common in people living with HIV/AIDS (PLWHA) than the general population, and trauma is associated with worse current health and functioning. Virtually no data exist on the prevalence or consequences of trauma for PLWHA in low income nations. METHODOLOGY/PRINCIPAL FINDINGS We recruited ...

Journal: :Microelectronics Reliability 2015
Miao Cai Dao-Guo Yang Kunmiao Tian Ping Zhang Xianping Chen Lilin Liu G. Q. Zhang

a r t i c l e i n f o Keywords: High-power LED lamp Step-stress accelerated test Subsystem isolation method Lifetime Degradation Mechanism The lifetimes of high-power light-emitting diode (LED) lamps are investigated by step-stress accelerated test. The entire lamp is divided into three subsystems, namely, the LED light source, the driver, and the mechanical fixture. Step-stress accelerated tes...

Journal: :Physical Review Letters 2021

A cold atomic ensemble suits well for optical quantum memories, and its entanglement with a single photon forms the building block networks that give promise many revolutionary applications. Efficiency lifetime are among most important figures of merit memory. In this paper, we report realization between an single-photon subsecond high efficiency. We engineer dual control modes in ring cavity t...

Journal: :J. Comput. Syst. Sci. 1996
Victor Vianu

In [4, 13], Bancilhon and Paredaens introduced a notion of completeness for relational database languages on instance-level. Their criterion was subsequently called BP-completeness. Since then, it was used frequently in the context of other database models. However, its application in the context of languages involving object creation appears to raise some serious problems. In this paper, we us...

2017
Sebastian Steinau Kevin Andrews Manfred Reichert

As opposed to contemporary activity-centric, process-aware information systems (PAIS), for which a multitude of concepts and implementations exist, there is only a very limited number of PAIS implementing data-centric, artifact-centric or object-aware approaches. This demo paper presents the implementation of a modeling environment for the object-aware approach to business process management. O...

2005
V. Bocci P. Branchini F. Ceradini G. Chiefari A. De Santis B. Di Micco M. L. Ferrer P. Franzini E. Gorini E. Graziani F. Lacava G. Lanfranchi P. Massarotti A. Passeri P. Santangelo E. Santovetti T. Spadaro

From a sample of about 10 φ mesons produced at DAΦNE, we have selected KL mesons tagged by observing KS → ππ decays. We present results on the major KL branching ratios, including those of the semileptonic decays needed for the determination of |Vus|. These branching ratio measurements are fully inclusive with respect to final-state radiation. The KL lifetime has also been measured.

Journal: :journal of mahani mathematical research center 0
s. s. hashemi-bosra department of basic sciences, birjand university of technology, birjand 97198, iran e. salehi department of basic sciences, birjand university of technology, birjand 97198, iran

the parallel systems are special important types of coherent structures and have many applications in various areas.in this paper we consider a two-exchangeable-component parallel system for the generalized farlie-gumbel-morgenstern (generalized fgm) distribution. we study the reliability properties of the residual lifetime of the system under the condition that both components of the system ar...

2015
Véronique Massari Annabelle Lapostolle Marie-Catherine Grupposo Rosemary Dray-Spira Dominique Costagliola Pierre Chauvin

BACKGROUND Despite the widespread offer of free HIV testing in France, the proportion of people who have never been tested remains high. The objective of this study was to identify, in men and women separately, the various factors independently associated with no lifetime HIV testing. METHODS We used multilevel logistic regression models on data from the SIRS cohort, which included 3006 Frenc...

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