Results 161 to 170 of about 660,511 (329)

Structure design and implementation of a water cooling sub‐20 nm multilayer Kirkpatrick–Baez mirror system in the Structural Dynamics beamline ID23 at HEPS

Journal of Synchrotron Radiation, EarlyView.
A water‐cooling nano multilayer Kirkpatrick–Baez mirrors system has been implemented at ID23 HEPS. The focal spot size of 13.39 nm × 15.15 nm (H × V) at a photon energy of 21.8 keV demonstrates the system's performance.The first water‐cooling nano multilayer Kirkpatrick–Baez mirror system in the Structural Dynamics beamline (ID23) at High Energy Photon
Ruiying Liao, Haihan Yu, Jianye Wang, Xue Wang, Changrui Zhang, Wenkai Kang, Ling Fan, Chunxia Yao, Penghao Hou, Darui Sun, Fang Liu, Lu Zhang, Zhaoqiang Cui, Zhongrui Ren, Zina Ou, Ruzhen Xu, Duanyang Fu, Yuhang Wang, Pengcheng Li, Chenglong Zhang, Lingzhu Bian, Miao Zhang, Zhanxin Gu, Zhe Li, Zhibang Shen, Lidan Gao, Bingbing Zhang, Shanzhi Tang, Ming Li, Weifan Sheng   +29 more
wiley   +1 more source

Review on thread profile modification methods for the planetary roller screw mechanism. [PDF]

iScience
Sun Y, Zhang K, Shi Z, Xie G, Lv X, Cheng H, Tang Z.   +6 more
europepmc   +1 more source

New Results From the Pre‐Pottery Neolithic Site of Al Uyaynah, Tabuk, in Northwestern Saudi Arabia

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT Al Uyaynah is a low sandstone mound on an alluvial plain, long known for its extensive surface remains of stone‐built circular and rectangular structures. Following test excavations in 2012, more detailed excavation was undertaken in 2016 within one of the largest rectangular stone structures.
Khalid Alasmari, Stephanie F. Piper, Kirsten Grothe, W. Derek Hamilton, Delphine Joly, Penny Bickle, Geoff Bailey   +6 more
wiley   +1 more source

The fault detection and severity diagnosis of rolling element bearings using modulation signal bispectrum [PDF]

The rolling element bearing is a key part in many mechanical equipment. The accurate and timely diagnosis of its faults is critcal for predictive maintenance. Vibration signals from a defective bearing with a localized fault contain a series of impulsive
Gu, Fengshou, Rehab, Ibrahim, Ball, Andrew, Tian, Xiange   +3 more
core  

Optimization of accelerated life test design process for gears and bearings using equivalent damage method. [PDF]

Sci Rep
Kim JH, Kim BS, Park JH, Moon DJ, Kim S, Park YJ.   +5 more
europepmc   +1 more source

Between Gaps and Voids: An Archaeometrical Study of Degraded Fibers in a Sherd From the Cueva dos Chinches Muertas, Siltzul (Raxruha, Alta Verapaz, Guatemala)

Archaeometry, EarlyView.
ABSTRACT In 2019, excavations at the Cueva dos Chinches Muertas carried out by the Raxruha Viejo Project uncovered a small ceramic sherd distinguished by a stratified structure composed of multiple layers of textile imprints, both superficial and transversal.
Marie Ramelet
wiley   +1 more source

Application of Dang Van Model Based on Critical Plane Approach for Rolling Contact Problems. [PDF]

Materials (Basel)
Romanowicz PJ.
europepmc   +1 more source

A revised classification system of the marronoid clade of spiders (Araneae), based on dense sampling phylogenomics and comparative morphology

Cladistics, EarlyView.
Abstract The marronoid clade is a globally distributed, ecologically diverse group of spiders. It is an important faunal component in both natural and synanthropic environments, and even found in aquatic and extreme habitats such as desert salt flats. The systematics of the marronoid clade has been notoriously unstable due to the widespread character ...
Jonas O. Wolff, Michael B. J. Kelly, Franklyn Cala‐Riquelme, Jacob A. Gorneau, Katherine O. Montana, Helen M. Smith, Phil J. Sirvid, Cor J. Vink, Lauren A. Esposito, Martín J. Ramírez, Charles E. Griswold   +10 more
wiley   +1 more source

Development of a high-speed planetary gearbox for an electric vehicle. [PDF]

Sci Rep
Zagirnyak M, Drahobetskyi V, Salenko Y, Kulynych V, Moloshtan D, Szczęsny A, Korzeniewska E.   +6 more
europepmc   +1 more source

Life‐History Traits and Overwintering of Actia interrupta (Diptera: Tachinidae), a Larval Parasitoid of Choristoneura fumiferana (Lepidoptera: Tortricidae)

Entomologia Experimentalis et Applicata, EarlyView.
Actia interrupta is a larval tachinid parasitoid that plays a key role in regulating low‐density populations of the eastern spruce budworm. We describe its immature stages, life‐history traits, host‐searching behavior, development, and confirm its larviparous reproductive strategy.
Véronique Martel, Jacques Régnière, Jean‐Claude Thireau, Rob C. Johns   +3 more
wiley   +1 more source