Results 101 to 110 of about 82,468 (248)

Coalescence‐Ripening Mechanism of γ′−Ni3(Al, Ti) During Long‐Term/High‐Temperature Operation of Ni‐Based Superalloy Discs

Rare Metals, EarlyView.
ABSTRACT The evolution of the γ′−Ni3(Al, Ti) phase in superalloys is governed by a coupled coalescence‐ripening mechanism driven by elemental diffusion. In this study, thermal exposure experiments were performed at 750°C and 800°C for durations ranging from 100 to 20,000 h.
Zhaotian Wang, Yongquan Ning, Bingchao Xie, Xiaoguang Fan, Mei Zhan, Mingwang Fu   +5 more
wiley   +1 more source

An Introduction to Nonstandard Analysis

Irish Mathematical Society Bulletin, 1985
In the paper under review that author gives a brief introduction to axiomatic nonstandard analysis in the sense of Nelson's internal set theory. The author gives two examples of how to employ internal set theory in order to establish standard results.
openaire   +2 more sources

Experiences With a Last Meter Delivery Robot

Journal of Field Robotics, EarlyView.
ABSTRACT The steady growth of e‐commerce is a consolidated trend continuously increasing the number of parcels delivered worldwide. Conventionally, in logistics, last mile delivery has been the area of study covering the last step of a parcel delivery process: from the nearest distribution center to the customer.
Ricard Bitriá, Jordi Palacín, Elena Rubies, Eduard Clotet   +3 more
wiley   +1 more source

MXene‐Based Flexible Memory and Neuromorphic Devices

Small, EarlyView.
The unique two‐dimensional structure, excellent electrical conductivity, and diverse surface groups of MXenes have garnered significant attention. Coupled with their exceptional flexibility, MXene‐based devices hold immense potential for flexible memory and neuromorphic systems. This review comprehensively discusses the fundamentals of flexible devices,
Yan Li, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Yan Yan, Shuangmei Xue, Kui Zhou, Meng Zhang, Yutong Zhang, Qi‐Jun Sun, Yi Liu, Vellaisamy A. L. Roy, Ye Zhou, Su‐Ting Han   +13 more
wiley   +1 more source

Dual Kidney Transplantation Offers Prolonged Graft Survival. [PDF]

Clin Transplant
ABSTRACT Introduction Dual kidney transplantation (DKT), an uncommonly performed procedure, provides a unique opportunity to transplant nonstandard kidneys that might otherwise not be utilized. We compared perioperative and five‐year posttransplant outcomes between DKT, and single kidney transplants (SKT) performed at our institution.
Fedorova E, Firmino SN, Foley D, Garonzik-Wang J, Kaufman D, Odorico J, Aufhauser D, Neidlinger NA, Thiessen C, Philip J, Collins KM, Mezrich J, Al-Adra D, Mandelbrot D, Astor BC, Parajuli S.   +15 more
europepmc   +2 more sources

A mathematical proof of the existence of trends in financial time series [PDF]

We are settling a longstanding quarrel in quantitative finance by proving the existence of trends in financial time series thanks to a theorem due to P. Cartier and Y.
Cédric Join, Michel Fliess
core  

Evidence Suggests Prophylactic Antibiotics May Be Unnecessary in Anorectal Surgery—A Systematic Review and Meta‐Analysis

World Journal of Surgery, EarlyView.
Current evidence does not support the routine use of prophylactic antibiotics in uncomplicated anorectal procedures. However, the certainty of evidence is limited by small sample sizes, methodological heterogeneity, and limited number of available studies. Large‐scale randomized trials are required to strengthen this evidence base.
James Jin, Velia Men, Maggie Wang, Andrew Hill   +3 more
wiley   +1 more source

Polymorphism in Tetramethylammonium Selenocyanate – Crystal Structures of α‐, β‐, and γ‐[NMe4][SeCN]

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
This study reports the synthesis and crystallographic investigation of tetramethylammonium selenocyanate. The structures of α‐, β‐, and γ‐[NMe4][SeCN] are related to one another and also to the CsCl‐type. In the solid state, tetramethylammonium selenocyanate, [NMe4][SeCN], is polymorphic.
Sven Ringelband, Jonathan Pfeiffer, Hennes Günther, Sergei Ivlev, Frank Tambornino   +4 more
wiley   +1 more source

Myocardial Perfusion Defects in Hypertrophic Cardiomyopathy Mutation Carriers

Journal of the American Heart Association, EarlyView., 2021
Background Impaired myocardial blood flow (MBF) in the absence of epicardial coronary disease is a feature of hypertrophic cardiomyopathy (HCM). Although most evident in hypertrophied or scarred segments, reduced MBF can occur in apparently normal segments.
Rebecca K. Hughes, Claudia Camaioni, João B. Augusto, Kristopher Knott, Ellie Quinn, Gabriella Captur, Andreas Seraphim, George Joy, Petros Syrris, Perry M. Elliott, Saidi Mohiddin, Peter Kellman, Hui Xue, Luis R. Lopes, James C. Moon   +14 more
wiley   +1 more source

Slow and fast systems with Hamiltonian reduced problems

Electronic Journal of Differential Equations, 2010
Slow and fast systems are characterized by having some of the derivatives multiplied by a small parameter $epsilon$. We study systems of reduced problems which are Hamiltonian equations, with or without a slowly varying parameter.
Maamar Benbachir, Karim Yadi, Rachid Bebbouchi   +2 more
doaj