نتایج جستجو برای: wooden sleeper

تعداد نتایج: 5522  

2011
Hang-Jun Wang Hung-Du Lin Li-Yan Zhang Shao-Xiong Ding

Twenty microsatellite markers were isolated and characterized from the Chinese black sleeper, Bostrychus sinensis. Loci were screened in 30 individuals from Taiwan. For each locus, the number of alleles varied from 4 to 22 with mean expected and observed heterozygosity of 0.79 and 0.66, respectively. One locus significantly deviated from Hardy-Weinberg equilibrium after Bonferroni correction an...

Journal: :BioTechniques 2008

Journal: :E3S web of conferences 2021

The aim of the study is to select rational axle loads rolling stock and establish conditions for their circulation on railways Republic Uzbekistan. In this work, research has been carried out assess indicators stress-strain state rail track elements from action with various axial loads. dynamic wheel rail, tensile stresses at edges foot, in wooden sleepers (rubber under-rail pads reinforced con...

2008
Daniel B. Kennedy Robert J. Homant Erick Barnes

Pipes (2003) has proposed a checklist for law enforcement to use in identifying possible members of sleeper cells. The purpose of this research was to evaluate Pipes’ checklist through the judgment of Muslim “insiders.” Thirty-three Muslim insiders responded to Pipes’ checklist by indicating the degree of concern that they believed each item should trigger about a possible sleeper. The sample o...

2016
Z. Gao

In North America, most rail corridors are constructed using ballasted track. Monitoring the ballast support condition and improving upon current sub-structure/ballast maintenance strategies will ensure safe railroad operations. However, it is inherently difficult to evaluate the pressure distribution at the sleeperballast interface. Researchers at University of Illinois at Urbana-Champaign (UIU...

Journal: :IOP Conference Series: Materials Science and Engineering 2021

1974
ANTHONY G. GREENWALD

The "sleeper effect" has been defined as a delayed increase in the persuasive impact of a communication from a source low in credibility. This effect failed to appear in the present series of seven replications (total N = 656) of a sleeper effect experiment. However, the effectiveness of communications attributed to a source high in credibility did significantly decrease with passage of time wh...

2010
PATRICK B. COONEY THOMAS J. KWAK

—We collected and compiled length and weight information from four countries and one commonwealth to develop standard weight (W s ) equations for three amphidromous fish species native to the Caribbean and Gulf of Mexico regions: mountain mullet Agonostomus monticola (N 1⁄4 9,768 individuals, 52 populations), river goby Awaous banana (N 1⁄4 1,847 individuals, 62 populations), and bigmouth sleep...

2017
J. C. Bastos

Over the past few decades, the use of concrete sleepers in North America has increased as a highperformance alternative to timber sleepers, especially in heavy-haul freight corridors. In order to accommodate heavier axle-loads and prevent center cracking, railroads and suppliers have consistently increased the center bending moment threshold that a sleeper must withstand, leading to stiffer ele...

2018
Koya Mine

Objectives: Various stretching techniques have been proposed to prevent or improve Glenohumeral Internal Rotation Deficit (GIRD) and Posterior Shoulder Tightness (PST). Common stretching techniques include modified sleeper stretch and cross-body stretch. The current evidence is unclear which stretching technique is more effective. This study aimed to examine immediate effects of modified sleepe...

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