Results 21 to 30 of about 198 (108)

Rapid Changes in Southern Ocean Upper‐Water Temperature Linked to Shift of the Southern Hemisphere Westerlies Since the Last Glacial

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract The pattern and cause of upper‐water temperature (UWT) variations on millennial timescales in the Southern Ocean (SO) and the mechanism of their interaction with high‐latitude Northern Hemisphere climate remain unclear. Here, we reconstructed millennial‐scale subsurface temperature (subST) records from the Weddell Sea during the Last Glacial ...
Tong Wang, Thomas Algeo, Qi Jia, Peng Zhang, Jian Xu, Bingbin Qin, Yihao Hu, Jiakai Wang, Zhifang Xiong, Tiegang Li   +9 more
wiley   +1 more source

Cteno‐Bot: An Untethered Metachronally Swimming Robot With Magnetoactive Propulsors

Advanced Intelligent Systems, Volume 8, Issue 8, August 2026.
We present Cteno‐bot, an untethered ctenophore‐inspired robot which swims using metachronally coordinated appendages. A single mechanism controls up to 216 magnetoactive propulsors via a dynamically varying magnetic field. We show that the swimming speed of the robot can be increased without a corresponding increase in power requirement, simply by ...
David J. Peterman, Margaret L. Byron
wiley   +1 more source

基于ANSYS的新型人字齿同步带受力分析

Jixie chuandong, 2012
Double helical synchronous belt drives is a new breakthrough in the structure,which has both straight tooth belt and helical tooth belt’s advantages.We establish a pair of double helical synchronous belt and pulley completely meshing three-dimensional ...
郭建华, 郑娜, 姜洪源, 敖宏瑞
doaj  

Task‐Evoked Functional Activation and Coupling With CSF Flow Detected in the Human Brain With Ultrashort Echo Time fMRI at 7 T

NMR in Biomedicine, Volume 39, Issue 8, August 2026.
Ultrashort and zero echo time (UTE and ZTE) MRI techniques generate functional contrast through inflow effects, making them suitable for studying cerebral blood flow and cerebrospinal fluid (CSF) dynamics. In a 7‐T study of 13 participants performing a visual task, we demonstrate that UTE produced robust, reproducible activations with group‐level ...
Sara Ponticorvo, Ekaterina Paasonen, Pavel Filip, Douglas L. Rothman, Juha S. Valjakka, Olli Gröhn, Shalom Michaeli, Silvia Mangia   +7 more
wiley   +1 more source

基于高阶接触啮合理论的新型人字齿同步带传动设计

Jixie chuandong, 2013
Double helical synchronous belt transmission receives much concern with its excellent characteristics of de-noising,low transmission error and high carrying capacity.The profiles of synchronous belt and belt pulley were studied based on conjugate ...
姜洪源, 郭建华, 胡清明, 李佳博, 吴贻珍   +4 more
doaj  

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

Advanced Materials Technologies, Volume 11, Issue 14, 22 July 2026.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe, Sebastian Mettes, Eduardo Francke, Kenneth W. Allen, Yi Chen Mazumdar   +4 more
wiley   +1 more source

Research on Control Performance Improvement of Quantitative Feeder Using RBF Neural Network Predictor and PI Controller

Engineering Reports, Volume 8, Issue 7, July 2026.
The determination feeder is production equipment that supplies raw materials according to the correct set amount of supply. It is very important for modernizing the process of mixing raw materials in various fields such as agrochemicals, medicines, foodstuff industry, steel, cement, and so on and improving the quality of products.
Pak Gumhyok, Jo Hyok, Pak Chunghyo, Sin Byonchol, Ro Daeun, Ri Unung   +5 more
wiley   +1 more source

State of the UK Climate in 2025

International Journal of Climatology, Volume 46, Issue S1, July 2026.
This report provides a summary of the state of the UK's climate in 2025. It is one of a series of annual reports published in the International Journal of Climatology since 2018. It presents the latest assessment of UK climate trends, variations and extremes based on the most up to date observations from the land network of weather stations.
Mike Kendon, Amy Doherty, Dan Hollis, Emily Carlisle, Stephen Packman, Nick Rayner, Ségolène Berthou, Lucy Barker, Steve Turner, Jamie Hannaford, Svetlana Jevrejeva, Andrew Matthews, Joanne Williams, Alex Marshall, Tim Sparks   +14 more
wiley   +1 more source

Respiration Can Trigger Cerebrovascular Reactivity: A Novel Method to Quantify Cerebrovascular Resistance Dynamics Using Real‐Time Phase‐Contrast MRI

Magnetic Resonance in Medicine, Volume 96, Issue 1, Page 83-95, July 2026.
ABSTRACT Purpose To directly quantify respiration‐driven cerebrovascular resistance dynamics (CRD) using a gas‐free MRI framework based on the internal‐to‐external artery carotid flow ratio (ratio_Q). Theory and Methods Two independent datasets (n = 10 and n = 17) were used to evaluate repeatability and to compare breathing conditions.
Pan Liu, Qiuting Wen, Kimi Owashi, Jean‐Marc Constans, Cyrille Capel, Olivier Balédent   +5 more
wiley   +1 more source

WC1/WC2–Sre1 Transcriptional Cascade Controls Predation and Chlamydospore Formation in the Nematode‐Trapping Fungus Arthrobotrys flagrans

Microbial Biotechnology, Volume 19, Issue 7, July 2026.
Systematic functional characterization of all eight GATA‐type transcription factors in the nematode‐trapping fungus Arthrobotrys flagrans reveals a novel, light‐independent WC1/WC2–Sre1 transcriptional cascade that orchestrates both trap formation and chlamydospore development, providing actionable targets for engineering superior biocontrol strains ...
Yu Zhang, Jiafang Zuo, Qianfei Shi, Peiji Zhao, Hanbo Zhang, Minghe Mo, Guohong Li   +6 more
wiley   +1 more source