Results 111 to 120 of about 21,653 (301)

Research on Crowbar Protection Circuit in Traction Converter

, 2021
In view of the current status of IGBT failures causing serious consequences in traction converter, several common IGBT power module failure modes were analyzed, crowbar protection circuit and principle were introduced, and the qualitative and quantitative comparisons of with/without crowbar protection circuit in various failure modes were carried out ...
Yupeng LI, Jianhui FU, Yongjiang LIU, Ronghui FAN, Xionghui TANG, Zhenjun LIN   +5 more
openaire   +1 more source

Rethinking Power Solutions for Healthcare Wearables: From Point‐of‐Care and Episodic use to Continuous Monitoring and Therapeutic Platforms

Advanced Energy and Sustainability Research, EarlyView.
This Perspective examines practical power solutions for wearable healthcare systems, highlighting the limits of standard batteries. It categorizes wearables into four domains—point‐of‐care diagnostics, episodic monitoring, continuous long‐term monitoring, and therapeutic platforms—and analyzes their power needs.
Seokheun Choi
wiley   +1 more source

Modeling and Control of Virtual Synchronous Generator Based on MMC-RPC

Kongzhi Yu Xinxi Jishu, 2018
As a typical weak AC system, traction power supply system has some disadvantages such as low inertia and poor resistance to disturbance. MMC-RPC (modular multilevel converter - railway static power conditioner) can control the power quality problems in ...
SONG Pinggang, ZHOU Zhenbang, DONG Hui, WEN Fa   +3 more
doaj  

Laparoscopic and Endoscopic Cooperative Surgery for Gastric Cancer as an Alternative Treatment in Elderly Patients: A Prospective Observational Study

Annals of Gastroenterological Surgery, EarlyView.
In a prospective study of 20 elderly gastric cancer patients who declined gastrectomy, laparoscopic and endoscopic cooperative surgery (LECS) was technically safe and preserved postoperative function. However, as oncological curability cannot be assured in advanced cases, careful selection and informed consent are essential.
Marie Washio, Keishi Yamashita, Takuya Wada, Mikiko Sakuraya, Hiroki Harada, Tadashi Higuchi, Koshi Kumagai, Yasushi Orihashi, Chika Kusano, Naoki Hiki   +9 more
wiley   +1 more source

Design of Traction Converter for Energy Storage Low-floor Vehicle

Kongzhi Yu Xinxi Jishu, 2017
Energy storage low-floor vehicle is a convenient and flexible choice due to the sectional catenaries-free characteristics, and currently it is one of the research hotspots in this field.
LI Hua, XIN Li, RONG Zhilin, FAN Ronghui, XIA Jing, CHEN Yuqi   +5 more
doaj  

Development of Traction System for 400 km/h High-speed EMU with Multiple Current System

机车电传动, 2020
Around the design requirement of traction system with multi current system, lightweight, energy saving and consumption reducing for 400 km/h high-speed EMU, the design principle of traction system was expounded.
Shanjun QI, Zhilin RONG, Dangbing ZOU, Yayun SUN   +3 more
doaj  

Safety and Feasibility of Laparoscopic and Endoscopic Cooperative Surgery With Endoscopic Submucosal Dissection for Large Superficial Non‐Ampullary Duodenal Epithelial Tumors

Annals of Gastroenterological Surgery, EarlyView.
ABSTRACT Background and Aims Endoscopic submucosal dissection (ESD) for large superficial non‐ampullary duodenal epithelial tumors (SNADETs) poses substantial technical challenges, primarily because of a heightened risk of adverse events (AEs). Laparoscopic and endoscopic cooperative surgery (D‐LECS) was introduced to address these risks, with recent ...
Masaru Hayami, Shoichi Yoshimizu, Naoki Miyazaki, Shintaro Yamamoto, Hiroyuki Yamamoto, Motonari Ri, Rie Makuuchi, Tomoyuki Irino, Manabu Takamatsu, Souya Nunobe   +9 more
wiley   +1 more source

Infrared emission spectrophotometric study of the changes produced by TiN coating of metal surfaces in an operating EHD contact [PDF]

Infrared emission spectra and related measurements were obtained from an operating ball/plate elastohydrodynamic (EHD) sliding contact under a variety of operating conditions.
Jones, W. R., Jr., Keller, L. E., Lauer, J. L.   +2 more
core   +1 more source

Impact of Abdominoperineal Resection on Postoperative Male Sexual Function After Minimally Invasive Rectal Cancer Surgery: A Subgroup Analysis From the LANDMARC Study

Annals of Gastroenterological Surgery, EarlyView.
Abdominoperineal resection (APR) after minimally invasive rectal cancer surgery was associated with significantly higher rates of erectile and early ejaculatory dysfunction compared with anal‐sparing surgery. Although ejaculatory function showed partial recovery over time, erectile dysfunction persisted up to 12 months postoperatively.
Taiki Kajiwara, Shinobu Ohnuma, Michiaki Unno, Masakatsu Numata, Tomohiro Yamaguchi, Koya Hida, Tomonori Akagi, Suguru Hasegawa, Akio Shiomi, Ryo Inada, Manabu Shiozawa, Keisuke Kazama, Masanori Hotchi, Masahiko Watanabe, Takeshi Naitoh   +14 more
wiley   +1 more source

What to Make and How to Make It: Combining Machine Learning and Statistical Learning to Design New Materials

Advanced Intelligent Discovery, EarlyView.
Combining machine learning and probabilistic statistical learning is a powerful way to discover and design new materials. A variety of machine learning approaches can be used to identify promising candidates for target applications, and causal inference can help identify potential ways to make them a reality.
Jonathan Y. C. Ting, Amanda S. Barnard
wiley   +1 more source