Results 171 to 180 of about 961,052 (305)

Ablation of ventricular tachycardia using state-of-the-art preprocedural imaging, magnetic-based 3-dimensional mapping, and ultra-low-temperature cryoablation technology. [PDF]

HeartRhythm Case Rep, 2022
Liebregts M, van Dijk VF, Boersma LVA, Balt JC.   +3 more
europepmc   +1 more source

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

Advanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler, Lucía Vizcaíno‐Anaya, Ahmad Tayyebi, José Manuel Vila‐Fungueiriño, María del Carmen Giménez‐López   +4 more
wiley   +1 more source

Surface oxygen Vacancies on Reduced Co₃ O₄ (100): Superoxide Formation and Ultra-Low-Temperature CO Oxidation. [PDF]

Angew Chem Int Ed Engl, 2021
Liu Y, Peng Y, Naschitzki M, Gewinner S, Schöllkopf W, Kuhlenbeck H, Pentcheva R, Roldan Cuenya B.   +7 more
europepmc   +1 more source

Nano‐Scale Characterization of Impurities Segregation in Solid Oxide Electrolysis Cells

Advanced Functional Materials, EarlyView.
Cathodic polarization induces impurity segregation in Ni, forming an amorphous Na─Al─Si─O amorphous phase at grain boundaries. Under ultralow oxygen partial pressure, multiple elements dissolve, migrate, and reoxidize within the metal. A patterned model system provides direct nanoscale evidence, clarifying the mechanism of polarization‐driven impurity ...
Zhongtao Ma, Qingjie Wang, Bowen Li, Vasileios Bilalis, Søren Bredmose Simonsen, Ming Chen   +5 more
wiley   +1 more source

Analysis of low-temperature performance strengthening technology of 18Ni（250） maraging steel

Jixie qiangdu
ObjectiveThis study aims to investigate the influence of multiple cyclic phase transitions on the micro-structure and low-temperature mechanical properties of 18Ni(250) ultra-high-strength steel to meet the stringent requirements of low-temperature wind ...
XIE Bin, XIANG Guangwei, LIAO Xiaolin, XU Zhiwei   +3 more
doaj  

Mineral Admixture Governs the Synergy of Polymer and Fibers in Ultra-Low Temperature Concrete. [PDF]

Materials (Basel)
Li Y, Deng Y.
europepmc   +1 more source

Quantum effects in glasses at ultra-low temperatures

, 2021
Glasses at ultra-low temperatures present several puzzling phenomena. A notable example is the anomalous (i.e., non-Debye) behavior of thermodynamic quantities at temperatures lower than 1 K. A comprehensive quantum theory able to explain these phenomena has not been developed so far.
openaire   +1 more source

Shaping Matter with Acoustic Waves: From Particles to Functional Structures

Advanced Functional Materials, EarlyView.
Acoustic‐directed assembly is reviewed as a materials‐oriented strategy for organizing particles, polymers, metals, and biological systems into functional structures. The review distinguishes reversible manipulation from permanent structure formation through medium fixation, particle fixation, and in situ material generation, highlighting routes toward
Avraham Kenigsberg, Shelly Zlotnikov, Maya Fiorentino, Yuval Elias, Ornit Nagler‐Avramovitz, Hagay Shpaisman   +5 more
wiley   +1 more source

Initial Pre-Clinical Evaluation of the Augmented Ultra-Low Temperature Cryoablation Catheter for Ventricular Ablations. [PDF]

J Cardiovasc Electrophysiol
Dyrda K, Verma A, Dinov B, Fink T, Potter T, Raffa S, Sirois M, Clavet-Lanthier ME, Grigorov I, Pourfard P, Babkin A, Essebag V.   +11 more
europepmc   +1 more source

COVID 19 vaccine distribution solution to the last mile challenge: Experimental and simulation studies of ultra-low temperature refrigeration system. [PDF]

Int J Refrig, 2022
Sun J, Zhang M, Gehl A, Fricke B, Nawaz K, Gluesenkamp K, Shen B, Munk J, Hagerman J, Lapsa M.   +9 more
europepmc   +1 more source