نتایج جستجو برای: trapping

تعداد نتایج: 21345  

2013
Clare Sampson William D. J. Kirk

The western flower thrips Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) is a cosmopolitan, polyphagous insect pest that causes bronzing to fruit of strawberry (Fragaria x ananassa). The main aim of this study was to test whether mass trapping could reduce damage and to predict whether this approach would be economically viable. In semi-protected strawberry crops, mass trapping...

2017
Jenny Y. Y. Lau Xing Guo Chun-Chiu Pang Chin Cheung Tang Daniel C. Thomas Richard M. K. Saunders

Several evolutionary lineages in the early divergent angiosperm family Annonaceae possess flowers with a distinctive pollinator trapping mechanism, in which floral phenological events are very precisely timed in relation with pollinator activity patterns. This contrasts with previously described angiosperm pollinator traps, which predominantly function as pitfall traps. We assess the circadian ...

2015
Amelia Ahmad Khalili Mohd Ridzuan Ahmad Fan-Gang Tseng

Single-cell analysis has become the interest of a wide range of biological and biomedical engineering research. It could provide precise information on individual cells, leading to important knowledge regarding human diseases. To perform single-cell analysis, it is crucial to isolate the individual cells before further manipulation is carried out. Recently, microfluidic biochips have been widel...

Journal: :The Journal of chemical physics 2013
Yihang Yang Zhongzhi Zhang

Average trapping time (ATT) is central in the trapping problem since it is a key indicator characterizing the efficiency of the problem. Previous research has provided the scaling of a lower bound of the ATT for random walks in general networks with a deep trap. However, it is still not well understood in which networks this minimal scaling can be reached. Particularly, explicit quantitative re...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2008
Estelle Cormier-Michel B A Shadwick C G R Geddes E Esarey C B Schroeder W P Leemans

Unphysical heating and macroparticle trapping that arise in the numerical modeling of laser wakefield accelerators using particle-in-cell codes are investigated. A dark current free laser wakefield accelerator stage, in which no trapping of background plasma electrons into the plasma wave should occur, and a highly nonlinear cavitated wake with self-trapping, are modeled. Numerical errors can l...

2007
Kevin J. Coakley

In a neutron lifetime experiment conducted at the National Institute of Standards and Technology, protons produced by neutron decay events are confined in a proton trap. In each run of the experiment, there is a trapping stage of duration τ . After the trapping stage, protons are purged from the trap. A proton detector provides incomplete information because it goes dead after detecting the fir...

2017
Zdenek Pilát Alexandr Jonás Jan Jezek Pavel Zemánek

Baker's yeast (Saccharomyces cerevisiae) represents a very popular single-celled eukaryotic model organism which has been studied extensively by various methods and whose genome has been completely sequenced. It was also among the first living organisms that were manipulated by optical tweezers and it is currently a frequent subject of optical micromanipulation experiments. We built a microflui...

2008
Michael R. Conover

Hunting and trapping regulations are established so that these practices have little or no impact on those wildlife populations that do not cause damage. However, when wildlife populations cause significant damage, one reported benefit of allowing them to be trapped for furs or hunted is that these practices reduce wildlife damage below levels that would otherwise occur. Yet this reported benef...

2014
Wei Xu Linfan Li Xiaoyu Zhou Zheng Ouyang

In this study, the concept of ion sponge has been explored for developing 3D arrays of large numbers of ion traps but with simple configurations. An ion sponge device with 484 trapping units in a volume of 10 × 10 × 3.2 cm has been constructed by simply stacking 9 meshes together. A single rf was used for trapping ions and mass-selective ion processing. The ion sponge provides a large trapping ...

Journal: :PloS one 2015
Chunyan Liu Guili Song Lin Mao Yong Long Qing Li Zongbin Cui

Enhancer trapping (ET) is a powerful approach to establish tissue- or cell-specific reporters and identify expression patterns of uncharacterized genes. Although a number of enhancer-trapping vectors have been developed and a large library of fish lines with distinct tissue- or cell-specific expression of reporter genes have been generated, the specificity and efficiency of trapping vectors nee...

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