Results 111 to 120 of about 1,920 (258)

非对称齿轮的设计及弯曲应力分析

Jixie chuandong, 2013
A new type of rack cutter for cutting asymmetric gear is designed,the profile equations are deduced,the force of five typical points are analyzed in the transmission process,and five sets of asymmetric gears with the pressure angles of 20°/20°,25°/20°,30°
张海伟
doaj  

Tailoring Microstructure and Hardness in Maraging 300 Steel via 2.4 wt.% Niobium Addition and Controlled Aging Treatments

steel research international, EarlyView.
High Nb (2.4 wt.%) addition to Maraging 300 steel drives lattice distortion and nanoscale Nb–Mo‐rich precipitation, confirmed by energy‐dispersive X‐ray spectroscopy mapping (Mo ~5.4 wt.%, Nb ~2.5 wt.%). Nanoindentation reveals strong matrix hardening (H >4.8 GPa) at 480°C aging, while 560°C induces ~1.92 vol.% reverted austenite, enabling tunable ...
Laylla Sharon B. Peixoto, Mohammad Masoumi, Luís Henrique N. de Lima, Marcos Natan da Silva Lima, Luis Flávio Gaspar Herculano, Isabel Ferreira de Barros, Geronimo Perez, Maria Vittoria Moraschini Reis, Hamilton Ferreira Gome Abreu, Marcelo J. Gomes da Silva   +9 more
wiley   +1 more source

Epiphora: A Structured Diagnostic Approach for the Otolaryngologist

World Journal of Otorhinolaryngology - Head and Neck Surgery, EarlyView.
ABSTRACT Introduction Epiphora, or excessive tearing, has historically been predominantly managed by ophthalmologists. However, as there is substantial overlap between ophthalmic and otolaryngologic anatomy and pathology that may contribute to epiphora, patients with this symptom often present to otolaryngologists as well.
Luke M. O'Neil, Sam Kushner‐Lenhoff, Alexandra Van Brummen, Christopher Chambers, Hector Perez, Ashton E. Lehmann, Matthew M. Zhang, Aria Jafari   +7 more
wiley   +1 more source

From analytical to data‐driven: multi‐method optimization of a bendable mirror system for dynamic focusing

Journal of Synchrotron Radiation, EarlyView.
A small‐radius‐of‐curvature bendable mirror system is developed for dynamic focusing in X‐ray free‐electron laser and synchrotron radiation beamlines, and a transfer‐learning neural‐network and differential‐evolution framework is used for force‐to‐shape modeling and inverse optimization.
Baoning Sun, Zhixiang Wen, Qinghao Zhu, Jun Luo, Tairong Xu, Lingfeng Zhu, Yaxiang Liang, Jitao Sun, Zhuo Li, Shun Xia, Zhongmin Xu, Meiyi Wu, Qinming Li, Weiqing Zhang, Xueming Yang   +14 more
wiley   +1 more source

Alternative Contract Design: Analysing the Bankability of Fungible Derivative Contracts in Energy‐Only Markets

Australian Journal of Agricultural and Resource Economics, EarlyView.
ABSTRACT With the retirement of 21GW of legacy coal fleet looming, the task to replace Australia's thermal capacity with alternative firmed renewable ‘bulk energy’ solutions is non‐trivial. Indeed, calibrating necessary capital investment in new plant stock with efficient economic outcomes, vis‐à‐vis cost and reliability, represents a fundamental ...
Nicholas Gohdes, Tim Nelson, Phillip Hirschhorn   +2 more
wiley   +1 more source

一种新型的仿生步行机构及其运动仿真

Jixie chuandong, 2010
Imitating animals asymmetric motion,a new-style bionics walking mechanism is designed by using two tandem planetary gear trains,which is composed of one first swiveling arm,one second swiveling arm,two striding rods and walking bracket,etc.In which,the ...
汪永明, 余晓流, 汪丽芳, 汤文成   +3 more
doaj  

Preparing to Fight the ‘Wrong War’? Why the UK Defence Budget Must Focus More on ‘National Resilience’

The Political Quarterly, EarlyView.
Abstract This article argues that the current debate over defence spending in the United Kingdom is fundamentally flawed. Too much emphasis is being placed on preparing for a form of warfare with Russia that is unlikely to occur. As this article points out, the Russians actually want to avoid a traditional battlefield confrontation with NATO.
Rod Thornton
wiley   +1 more source

Gut Microbiome Functional Reprogramming Reflects Divergent Social Strategies in a Wild Primate

Integrative Zoology, EarlyView.
Wild golden snub‐nosed monkeys employ divergent social strategies, forming reproductive one‐male units and bachelor all‐male units. We reveal that these social structures, intertwined with seasonal diets, drive distinct functional reprogramming in their gut microbiomes. This adaptive microbial plasticity plays a crucial role in primate socio‐ecological
Guanwei Lan, Xianjun Li, Zhantao Lu, Yue Zhang, Feifei Feng, Juan Liu, Wei Wu, Jiabin Liu, Yanshan Zhou, Jiang Gu, Rui Ma, Dunwu Qi   +11 more
wiley   +1 more source

Paradigm Shift in the Making? Geopolitical Challenges and Institutional Changes in the International Monetary System: From Neoliberalism to a Pluralist Multipolar Financial Order

Global Policy, EarlyView.
ABSTRACT This paper examined the critical challenges facing the international monetary system, arguing that they have created conditions for a shift from a neoliberal framework to a pluralist multipolar financial order. Using an interdisciplinary approach that blends international law and international relations, the paper provides an analysis of the ...
Jiangyu Wang
wiley   +1 more source

Moderate is the New Black: Shifts and Intersections in Saudi Arabia's Domestic and Foreign Policy

Global Policy, EarlyView.
ABSTRACT The Kingdom of Saudi Arabia (KSA) is undergoing a period of intense changes. Its current stage of transformation has been led by Prince Mohammed bin Salman (MbS) since 2015, seeking to turn the Kingdom into a story of successful governance and one of the leading powers in the Middle East. In hardly understood yet very consequential ways, KSA's
Javier Bordón, David Hernández Martínez   +1 more
wiley   +1 more source