Results 111 to 120 of about 849,634 (310)

The Future of Hydrogen‐Powered Aviation: Technologies, Challenges, and a Strategic Roadmap for Sustainable Decarbonization

Advanced Energy and Sustainability Research, EarlyView.
Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira, Md Mahbubur Rahman, Karib Hassan Khan, Md Nizam Uddin, Dewan Hafiz Nabil   +4 more
wiley   +1 more source

Value of combined diaphragm and intercostal muscle ultrasonography in guiding weaning assessment in mechanically ventilated patients with sepsis

Shanghai Jiaotong Daxue xuebao. Yixue ban
Objective·To explore the value of combined diaphragm and intercostal muscle ultrasound assessment compared with conventional diaphragm ultrasound in predicting the weaning outcome in mechanically ventilated patients with sepsis.Methods·Mechanically ...
SHEN Haoliang, YUAN Kaihao, YU Lei, YANG Nana, WANG Yiping, ZHAO Hongsheng, GUO Fengmei, SUN Chenliang   +7 more
doaj   +1 more source

Exploring Patterns of Dynamic Size Changes of Lesions after Hepatic Microwave Ablation in an In Vivo Porcine Model [PDF]

, 2020
Microwave ablation (MWA) is a type of minimally invasive cancer therapy that uses heat to induce necrosis in solid tumours. Inter- and post-ablational size changes can influence the accuracy of control imaging, posing a risk of incomplete ablation.
Bressem, Keno K., Erxleben, Christoph, Geyer, Beatrice, Hamm, Bernd, Lehmann, Kai S., Niehues, Stefan M., Poch, Franz, Shnaiyen, Seyd, Vahldiek, Janis L.   +8 more
core   +1 more source

Risk Factors for Anastomotic Stricture and Obstructive Symptoms Following Double‐Flap Technique Reconstruction After Proximal Gastrectomy

Annals of Gastroenterological Surgery, EarlyView.
This retrospective study investigated risk factors for anastomotic stricture and obstructive symptoms following double‐flap technique (DFT) reconstruction after proximal gastrectomy. Mucosal detachment, potentially caused by thermal damage, was identified as a significant risk factor for anastomotic stricture, while continuous suturing at the esophago ...
Shinji Kuroda, Yoshihiko Kakiuchi, Satoru Kikuchi, Hajime Kashima, Nobuhiko Kanaya, Shunya Hanzawa, Kenjiro Kumano, Masahiko Nishizaki, Shunsuke Kagawa, Toshiyoshi Fujiwara   +9 more
wiley   +1 more source

Implementation of ultrasonic sensing for high resolution measurement of binary gas mixture fractions [PDF]

, 2014
We describe an ultrasonic instrument for continuous real-time analysis of the fractional mixture of a binary gas system. The instrument is particularly well suited to measurement of leaks of a high molecular weight gas into a system that is nominally ...
Bates, Richard, Battistin, Michele, Berry, Stephane, Bitadze, Alexander, Bonneau, Pierre, Bousson, Nicolas, Boyd, George, Bozza, Gennaro, Brookhaven National Lab. (BNL), Upton, NY (United States), Crespo-Lopez, Olivier, Da Riva, Enrico, Degeorge, Cyril, Deterre, Cecile, DiGirolamo, Beniamino, Doubek, Martin, Favre, Gilles, Godlewski, Jan, Hallewell, Gregory, Hasib, Ahmed, Katunin, Sergey, Langevin, Nicolas, Lombard, David, Lombard, Didier, Mathieu, Michel, McMahon, Stephen, Nagai, Koichi, Pearson, Benjamin, Robinson, David, Rossi, Cecilia, Rozanov, Alexandre, Strauss, Michael, Vacek, Vaclav, Vitek, Michal, Zwalinski, Lukasz   +33 more
core   +2 more sources

Poly(vinylidene Fluoride)‐Based Ferroelectric Polymers for Electromechanical Transduction: A Systematic Review of Materials and Actuators

Advanced Intelligent Systems, EarlyView.
Poly(vinylidene fluoride) (PVDF)‐based ferroelectric materials exhibit high strains, energy densities and coupling efficiencies, appealing for diverse applications requiring smart material actuators. This work reviews electromechanical transduction in PVDF‐based polymers and their modifications, implementation in actuators, and functional devices ...
Giulio Gallucci, Andres Hunt
wiley   +1 more source

Polydimethylsiloxane diaphragm-based fiber ultrasonic sensor with high sensitivity and wide spectrum response range

AIP Advances, 2021
In order to effectively enhance the sensitivity and response range of optical fiber Fabry–Pérot (FP) ultrasonic sensors, this article proposes an implementation method of an optical fiber FP ultrasonic sensor with a controllable cavity length and ...
Long Li, Jun Wang, Wei Wang, Diyang Wu, Ming Song, Guanjun Wang, Mengxing Huang   +6 more
doaj   +1 more source

Spontaneous Diaphragm Buckling Control Process on Piezoelectric Ultrasonic Microsensors for High Sensitivity [PDF]

, 1905
A new fabrication process has been proposed for high sensitivity piezoelectric ultrasonic microsensors based on spontaneous diaphragm buckling. The buckling deflection and direction of the diaphragms strongly affect the sensitivity of the sensors; upward-
Yamashita, Kaoru, Tanaka, Hikaru, Yang, Yi, Noda, Minoru   +3 more
core   +1 more source

Renal vessel–assisted anastomosis improves the abdominal heart transplant model in rats without bilateral lower limb ischemia

Animal Models and Experimental Medicine, EarlyView.
A modified heterotopic heart transplantation (HTx) in rats was reported to improve the surgical success rate, in which the donor's vessels, the brachiocephalic trunk (BT) and the pulmonary artery (PA), were sutured to the recipient's left renal artery (RA) and left renal vein (RV).
Meng Wang, Wuxia Wang, Xunfeng Zou
wiley   +1 more source

A case report of thyroid carcinoma confined to ovary and concurrently occult in the thyroid. Is conservative treatment always advised? [PDF]

, 2015
Introduction: Struma ovarii is an ovarian teratoma, represented in more than 50% by thyroid tissue. Five percent of struma ovarii cases have been proven to be malignant and, as in the thyroid gland, papillary thyroid carcinoma is the most common ...
Bianchi, Loredana, Brusca, Nunzia, Cannas, Pina, Centanni, Marco, Del Duca, Susanna Carlotta, D’Agostini, Antonio, Gargano, Lucilla, Salvatori, Rita, Santaguida, Maria Giulia, Virili, Camilla   +9 more
core   +2 more sources