Results 141 to 150 of about 180,387 (302)

Actuation Strategies for Underwater Jet‐Propelled Soft Robots

Journal of Field Robotics, EarlyView.
ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone, Mohammed Anteet, Pawandeep S. Matharu, Yara Almubarak   +3 more
wiley   +1 more source

The impact of regional, seasonal, and environmental factors on the sleep status of urban residents in China

Sleep Research, EarlyView.
Abstract Background Sleep quality is influenced by various environmental factors, yet their impact across different regions and seasons in China remains understudied. Objective This study evaluated how environmental factors affect sleep quality, duration, and disorders among Chinese urban residents in different regions and seasons.
Youyang Qu, Shuhan Meng, Wanqiao Qi, Guihai Chen, Zan Wang, Jinzhu Yan, Ping Gu, Yanmei Zhu, Zifen Wan, Li Wang, Yuanqing Wang, Zhongming He, Dali Li, Lisan Zhang, Yunhui Lv, Guohui Li, Weimin Qu, Lili Long, Weiping Liu, Ning Li, Jianbin Liu, Wei Wu, Xiaojiang Jiang, Liang Xie, Liying Deng, Xiang Gao, Zhili Huang, Yulan Zhu   +27 more
wiley   +1 more source

Solving Sewing Machine Problems [PDF]

, 1975
PDF pages:
Deyo, Norma, Gill, William E., Haynes, Orena   +2 more
core  

Recycling of Mill Scale Into High‐Purity Iron Through Hydrogen‐Based Reduction

steel research international, EarlyView.
Mill scale, an iron oxide–rich steel by‐product, is difficult to recycle due to impurities. This study evaluates hydrogen‐based direct reduction and hydrogen plasma smelting reduction as low‐carbon recycling routes. Impurity segregation limits reduction kinetics. Direct reduction achieves 92% conversion in 180 min, while plasma reduction reaches 91% in
Nathalia C. Verissimo, Anumoy Ganguly, Lucas Varoto, Tim M. Schwarz, Jean‐Baptiste Letz, Ubaid Manzoor, Laurine Choisez, Dierk Raabe, Isnaldi R. Souza Filho   +8 more
wiley   +1 more source

An Outline of a Theory of Play

Symbolic Interaction, EarlyView.
Play is often dismissed as trivial, yet it is a fundamental and adaptive aspect of human and mammalian life. This paper develops a sociological theory of play, treating it as a total social fact that spans biological, psychological, and social dimensions.
Seth Abrutyn
wiley   +1 more source

Thermal Degradation and Thermal Decomposition of Plasticized PVC Including POSS Additives for PVC Compounds: Mechanisms, Impact, and Performance of Standards

Journal of Vinyl and Additive Technology, EarlyView.
Additives' structures. ABSTRACT Poly(vinyl chloride) has been a key polymeric material since its commercial production in 1931, demonstrating versatility across numerous industries due to its compatibility with various additives. PVC's inherent properties, flame retardance, durability, and recyclability make it ideal for building and construction ...
Stefano Gardi, Gianluca Sarti, Luca Palin, Enrico Boccaleri, Alberto Frache   +4 more
wiley   +1 more source

Empirical Physics‐Based Normal Behavior Modeling of Drive Train Temperatures With High‐Resolution Wind Turbine Operating Data

Wind Energy, EarlyView.
ABSTRACT The installed wind energy capacity increases every year. However, operation and maintenance costs still make up a considerable portion of the levelized costs of electricity. This costs can be greatly reduced by the application of suitable early fault detection methods. The supervisory control and data acquisition system of wind turbines is one
Timo Lichtenstein, Victor von Maltzahn, Karoline Pelka   +2 more
wiley   +1 more source

Investigation of Micro‐Nutrient Elemental Distribution in a Black Wheat (Triticum aestivum L.) Grain Using Synchrotron Assisted Microprobe X‐Ray Fluorescence Analysis at Indus‐2

X-Ray Spectrometry, EarlyView.
ABSTRACT Spatial localization of various essential dietary elements present in a black wheat (Triticum aestivum L.) grain has been investigated using synchrotron assisted micro X‐ray fluorescence measurements at BL‐16 beamline of Indus‐2 synchrotron facility. The results showed that most of the important dietary minerals like calcium (Ca), potassium (K)
Ajay Khooha, Ayushi Trivedi, M. K. Tiwari, Devesh Kumar Avasthi, Ajit Kumar Singh   +4 more
wiley   +1 more source

A Dual‐Frequency Sensitivity Model for Optical Fibre Ultrasonic Sensors in Power Transformer Partial Discharge Detection

High Voltage, EarlyView.
ABSTRACT The detection of partial discharges (PD) on the power transformer tank demands higher sensitivity in ultrasonic detection. To target the detection frequency band for sensor optimisation and enhance sensitivity, this paper presents a dual‐frequency sensitivity model for optical fibre ultrasonic sensors.
Sihan Wang, Jihang Sun, Jialin Wang, Bin Wei, Guoming Ma   +4 more
wiley   +1 more source

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source