Results 41 to 50 of about 4,779 (297)
Journal of Applied Polymer Science, EarlyView.Kevlar is traditionally modeled as a rigid‐rod polymer, yet rheological behavior deviates from this assumption. The review introduces a novel “twist‐tie” entanglement theory for aramid polymer chains in the nematic liquid crystal state, providing a molecular explanation for deviations from rigid‐rod models. Understanding twist‐tie entanglement dynamics
Emma Egli +3 more
wiley +1 more source
Distribution of Microstructure and Vickers Hardness in Spur Bevel Gear Formed by Cold Rotary Forging
Advances in Mechanical Engineering, 2014 Cold rotary forging is a novel metal forming technology which is widely used to produce the high performance gears. Investigating the microstructure and mechanical property of cold rotary forged gears has a great significance in improving their service ...
Wuhao Zhuang +3 more
doaj +1 more source
Analysis of Spur Gear Design Parameters and Surface Finish for Robotic Application [PDF]
, 2023 Surface roughness plays an important role in machine performance. The scope of the study discusses the parameters that need to be considered when studying gear surface roughness and what their values mean in robotic applications.
Abdelfattah, Sama Khaled Abdalla
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The impact of trauma‐informed teacher education
British Educational Research Journal, EarlyView.Abstract In this study, two cohorts of university students in an employment‐based teacher education course undertook trauma‐informed education training embedded within their coursework to enhance their preparedness to work with diverse learners and their self‐efficacy for trauma‐informed teaching. With increased calls for teacher preparation programmes
Michael Witter +2 more
wiley +1 more source
Counting cases, conserving species: addressing highly pathogenic avian influenza in wildlife
Biological Reviews, EarlyView.ABSTRACT Highly pathogenic avian influenza (HPAI) has become a critical threat to wildlife, shifting from a seasonal epizootic to a persistent, year‐round panzootic with global consequences. Here, we summarise the origin, evolutionary mechanisms, and expanding host range of the current H5N1 virus (clade 2.3.4.4b) and assess its impact on wildlife. Over
Ulrich Knief +4 more
wiley +1 more source
Pitting damage levels estimation for planetary gear sets based on model simulation and grey relational analysis [PDF]
, 2011 The planetary gearbox is a critical mechanism in helicopter transmission systems. Tooth failures in planetary gear sets will cause great risk to helicopter operations.
Gu, Fengshou +3 more
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Business Strategy and the Environment, EarlyView.ABSTRACT The role of artificial intelligence (AI) in achieving sustainability goals has garnered attention in academic literature. While AI has been argued to be crucial in addressing circularity challenges, organizations face challenges in configuring a business model.
Jian Wang +4 more
wiley +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT This study analyses the association between carbon emissions and financial performance in Latin American firms. The scientific literature on this topic is limited, with little evidence available in this geographical region. This study aims to address this research gap by testing hypotheses focused on analysing how Scope 1, 2 and 3 carbon ...
Ana Isabel Mendieta‐Callirgos +3 more
wiley +1 more source
Shock and Vibration, 2018 For the nonlinear disturbance actual issues of the model space drive mechanism two-stage spur gear system, a nonlinear dynamic model of 14-DOF (degree of freedom) two-stage spur gear with time-varying stiffness and damping was established. This model has
Jianfeng Ma, Chao Li, Lingli Cui
doaj +1 more source
Asstem of Corrected Spur Gears.
Journal of the Society of Mechanical Engineers, 1945 小齒車及び大齒車の曲げに對する強度を等しくすれば, この一對の齒車は動力傳逹用として最も望ましいものとなる.斯る條件を滿足する如く轉位係數を選擇する方法として, 齒形の隅肉を形成する二つのトロコイド曲線間の最短距離Sを, 同一材料から成る齒車對では相等しくなる如く, 又異なる材料の齒車對ではS2が材料の縱彈性率に反比例する如くとることを提案してある.Sの値が異なれば, 同一齒數の一對の齒車に對し, 種々異なる性質のものが出來る譯であるから, 斯る轉位齒車群の噛合性能圖を作製し, 中心距離又は使用目的により轉位係數の最後的決定をなす轉位平齒車の一方式に就て述べてある.尚壓力角αc=14°30′及びαc=20°の標準ラック型カッタに對し, 轉位係數の選擇に必要な圖表及び計算例をも示してある.
openaire +2 more sources