Results 91 to 100 of about 13,513 (277)
Electron-magnon Umklapp Scattering in FePt Films Measured by Thermopower
, 2016 We report unconventional thermopower (Seebeck coefficient, $S$) behavior of $L1_{0}$ FePt films. The electron diffusion and magnon scattering are found to be the major contributions to the thermopower at low temperatures. The temperature dependence of $S$
Hu, Guohan +4 more
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AC-drive System of the Intercity EMUs
机车电传动, 2015 The design principle of the AC drive system in the intercity EMUs was expounded, emphasis on the key technology such the structure, the working principle and the technical characteristics, which pointed out that the integrative convertor of the AC drive ...
ZHANG Zhibing +2 more
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Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT This study successfully prepared magnetic iron/cobalt codoped biochar catalyst (CFSBC) using a one‐step calcination method. The morphology and structure of the material were systematically characterized using SEM, XRD, FTIR, TEM, BET, Raman, VSM, and XPS techniques. The effects of key parameters such as catalyst dosage, peroxymonosulfate (PMS)
Jianhua Ni +3 more
wiley +1 more source
Helmeted hornbill cranial kinesis: Balancing mobility and stability in a high‐impact joint
The Anatomical Record, EarlyView.Abstract Prokinesis—in which a craniofacial joint allows the rostrum to move relative to the braincase—is thought to confer diverse advantages in birds, mostly for feeding. A craniofacial joint would, however, be a weak link if cranial stability is important. Paradoxically, we have identified a craniofacial joint in helmeted hornbills (Rhinoplax vigil),
Mike Schindler +8 more
wiley +1 more source
Analysis and verification of key technologies for the electrical system of power-concentrated EMUs
机车电传动This paper introduced the research progress and typical applications of power-concentrated EMUs abroad and provided a preliminary comparative analysis of system configurations among various EMU models.
LI Peng, ZOU Zhichao
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Development of High-speed EMUs Based on Permanent Magnet Motor Traction System
机车电传动, 2019 Based on the characteristics of permanent magnet motor traction system, the design principles of high-speed EMUs were expounded, and the design characteristics of traction converter and traction motor were discussed.
Donghua WU, Chuanming SUN
doaj
Workplace Democracy in the Lab [PDF]
While intuition suggests that empowering workers to have some say in the control of the firm is likely to have beneficial incentive effects, empirical evidence of such an effect is hard to come by because of numerous confounding factors in the naturally ...
Carpenter, Jeffrey P. +2 more
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Exploitation Aversion: When Financial Incentives Fail to Motivate Agents [PDF]
, 2013 Empirical studies of the principal-agent relationship find that extrinsic incentives work in many instances, linking rewards to performance increases effort, but that they can also backfire, reducing effort.
Carpenter, Jeffrey P., Dolifka, David
core
The Anatomical Record, EarlyView.Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen +7 more
wiley +1 more source
Dynamic Performance Analysis of Adaptability of Gauge Changeable High-speed EMUs
机车电传动, 2019 Gauge changeable high-speed EMUs need to adapt to gauge changes, rail profile and gradient changes, to meet the high-speed operation stability and other dynamic performance requirements.
Guodong LI +3 more
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