Results 51 to 60 of about 14,734 (291)
Role of funders in embedding tests in conservation practice
Conservation Biology, EarlyView.Abstract Effective conservation practice requires decisions based on reliable and relevant evidence, but significant gaps in the evidence base exist. Incorporating well‐designed tests of the effectiveness of interventions for biodiversity in conservation projects is one of the best ways to scale up the rate of evidence generation.
Rebecca K. Smith +28 more
wiley +1 more source
A Novel Elastic Metamaterial with Multiple Resonators for Vibration Suppression
Advances in Condensed Matter Physics, 2021 In this paper, two models of elastic metamaterial containing one and two resonators are proposed to obtain the bandgaps with the aim of providing broadband vibration suppression.
Saman Ahmadi Nooraldinvand +2 more
doaj +1 more source
A molecular rack and pinion actuates a cell-surface adhesin and enables bacterial gliding motility
Science Advances, 2018 This manuscript proposes that gliding bacteria use a molecular rack and pinion machinery for motion. The gliding bacterium Flavobacterium johnsoniae is known to have an adhesin, SprB, that moves along the cell surface on a spiral track. Following viscous
Abhishek Shrivastava, H. Berg
semanticscholar +1 more source
The Economic History Review, EarlyView.Abstract One of the most contentious issues in the study of the Atlantic slave trade is the profitability of the trade. In this paper, we contribute by pooling all available data on transatlantic slave ship voyage accounts into a joint dataset. This dataset includes data from a period of 100 years (1730–1830) and from five nations (Denmark, France ...
Klas Rönnbäck +4 more
wiley +1 more source
Jixie chuandong, 2012 Theoretical calculation of the strength for suppermodulus pinion is lacking.For involute cylindrical pinion,which was designed for rack and pinion jacking systems in wind power installation vessel,by analyzing modification theory,is accurately built ...
马宝, 唐文献, 章子玲, 张爽爽
doaj
Известия высших учебных заведений: Нефть и газ, 2016 The aim of this thesis is to develop computer program shows generating process of the longitudinal-crowned gear for straight bevel gears with a small shaft angle with non-generated gear and generated pinion.
A. A. Pazyak, V. N. Syzrantsev
doaj +1 more source
Performing Micro‐Role Transitions in Open Strategy
Journal of Management Studies, EarlyView.Abstract Open strategy (OS) requires contributors with a variety of functional backgrounds to episodically perform a strategy role in addition to their functional responsibilities. These actors engage in micro‐role transitions as they temporarily shift from one role to another.
Anna Plotnikova +2 more
wiley +1 more source
Simulation on Rack and Pinion Meshing Based on Eccentric Load
Shiyou jixie, 2019 In the design of the rack and pinion drilling rig, due to its special structural design, the center of gravity of the rig and the center of gravity of the transmission system are not in the same vertical plane.
Xu Fenghua +5 more
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SRESS AND FATIGUE LIFE OF PITTING DEFECTS ON PUMPING UNIT GEAR
Jixie qiangdu, 2022 Rack-pinion pumping unit is widely used in Xinjiang oilfields. In order to analyze the pitting damage and fatigue life of gear in rack-and-pinion pumping unit, Firstly, the model of rack-and-pinion was established, the elements of tooth surface and root ...
BAI YunSong +3 more
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It’s All About Me (Or Is It Us?): The Narrative Antecedents of the Locus of Celebrity
Journal of Management Studies, EarlyView.Abstract For two decades, research on individual and organizational celebrity has flourished. However, the literature remains limited in several ways. First, despite recent gains regarding the antecedents of celebrity, current theory does not fully explain why celebrity resides at a specific locus (i.e., at the individual‐ and/or organizational level).
Laura D’Oria +3 more
wiley +1 more source