Results 101 to 110 of about 9,774,707 (312)
Advanced Healthcare Materials, EarlyView.Living donor heart valves offer superior durability for pediatric patients but trigger immune rejection. Lentiviral delivery of viral immune‐evasion genes US2 and Serpin b9 into donor valve cells and valve tissue suppresses HLA expression, reduces PBMC clustering and cytotoxic killing, and induces transcriptional immune‐tolerance programs, paving the ...
Abraham van Wijk +11 more
wiley +1 more source
Plants and Graviperception [PDF]
فناوری در مهندسی هوافضا, 2019 Plants have different mechanisms for understanding and responding to environmental stimuli cues. Gravity is one of the most important directional environmental cues to control growth direction, that plants can permanently adapt to it. Gravitropism can be
Fateme Mousavi
doaj
Hydrogel‐Based Airway‐on‐Tube With Perfusable Endothelial Lumen and Outward Epithelialization
Advanced Materials, EarlyView.A hydrogel‐based airway‐on‐tube platform featuring a perfusable endothelial lumen and outward epithelialization is presented. The system supports primary human bronchial epithelial and lung microvascular endothelial coculture under air‐liquid interface conditions.
Ali Doryab +8 more
wiley +1 more source
Non-perturbative 3d Lorentzian quantum gravity [PDF]
, 2001 We have recently introduced a discrete model of Lorentzian quantum gravity, given as a regularized non-perturbative state sum over simplicial Lorentzian spacetimes, each possessing a uniqueWick rotation to Euclidean signature.
Ambj¢rn, J. +11 more
core +2 more sources
Design of Attitude Control System of an Axisymmetric Satellite with Gravity Gradient Stabilization and Slow Spinning about Yaw Axis [PDF]
فصلنامه علوم و فناوری فضایی, 2008 In this paper, attitude control system of an axisymmetric satellite will be designed in such a way that required stability is provided with slow spinning about yaw axis.
H. Bolandi, B. Ghorbani Vaghei
doaj
Advanced Materials, EarlyView.Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang +5 more
wiley +1 more source
Quantum Gravity: Has Spacetime Quantum Properties? [PDF]
, 2009 The conceptual incompatibility between General Relativity and Quantum Mechanics is generally seen as a sufficient motivation for the development of a theory of Quantum Gravity. If - so a typical argumentation - Quantum Mechanics gives a universally valid
Hedrich, Reiner
core
ATTITUDE DETERMINATION AND CONTROL SYSTEM OF KITSAT-1 [PDF]
Journal of Astronomy and Space Sciences, 1996 The attitude dynamics of KITSAT-1 are modeled including the gravity gradient stabilization method. We define the operation scenario during the initial attitude stabilization period by means of a magnetorquering control algorithm. The required constraints
Hyunwoo Lee, Byung Jun Kim, Dongjo Park
doaj
Can Elastomers Combine Stiffness, Toughness and Fatigue Resistance?
Advanced Materials, EarlyView.This review studies how the molecular and macroscopic architecture of elastomers influence their mechanical properties including: stiffness, stretchability, toughness, fatigue resistance, and damping behavior. By linking the structure to performance, it proposes design principles for advanced elastomeric systems that combine mechanical properties ...
Eva Baur, Esther Amstad
wiley +1 more source
International trade without CES : estimating translog gravity [PDF]
, 2010 This paper derives a micro-founded gravity equation in general equilibrium based on a translog demand system that allows for endogenous markups and substitution patterns across goods. In contrast to standard CES-based gravity equations, trade is more
Novy, Dennis
core