Results 51 to 60 of about 172,487 (303)
Scale-Dependent Definitions of Gradient and Aspect and their Computation [PDF]
, 2006 In order to compute lines of constant gradient and areas of constant aspect on a terrain, we introduce the notion of scale dependent local gradient and aspect for a neighborhood around each point of a terrain. We present three definitions for local gradient and aspect, and give efficient algorithms to compute them.
Iris Reinbacher +2 more
openaire +3 more sources
Strain-gradient elasticity and gradient-dependent plasticity with hierarchical refinement of NURBS [PDF]
Finite Elements in Analysis and Design, 2019 Higher-order strain-gradient models are relevant for engineering materials which exhibit size-dependent behaviour as observed from experiments. Typically, this class of models incorporate a length scale - related to micro-mechanical material properties - to capture size effects, remove stress singularities, or regularise an ill-posed boundary value ...
Kolo, I., Chen, L., de Borst, R.
openaire +2 more sources
FEBS Letters, EarlyView.Knowing how proteases recognise preferred substrates facilitates matching proteases to applications. The S1′ pocket of protease EA1 directs cleavage to the N‐terminal side of hydrophobic residues, particularly leucine. The S1′ pocket of thermolysin differs from EA's at only one position (leucine in place of phenylalanine), which decreases cleavage ...
Grant R. Broomfield +3 more
wiley +1 more source
Complicated dynamics of parabolic equations with simple gradient dependence [PDF]
Transactions of the American Mathematical Society, 1998 Summary: Let \(\Omega\subset\mathbb{R}^2\) be a smooth bounded domain. Given positive integers \(n,k\) and \(q_l\leq l\), \(l=1,\dots,k\), consider the semilinear parabolic equation \[ u_{t}= u_{xx}+ u_{yy}+ a(x,y)u+ \sum_{l=1}^k a_l(x,y) u^{l-q_{l}} (u_{y})^{q_{l}}, \quad t>0,\;(x,y)\in \Omega,\tag{E} \] \[ u=0, \qquad t>0,\;(x,y)\in \partial \Omega. \
PRIZZI, Martino, RYBAKOWSKI K. P.
openaire +3 more sources
Exploring lipid diversity and minimalism to define membrane requirements for synthetic cells
FEBS Letters, EarlyView.Designing the lipid membrane of synthetic cells is a complex task, in which its various roles (among them solute transport, membrane protein support, and self‐replication) should all be integrated. In this review, we report the latest top‐down and bottom‐up advances and discuss compatibility and complexity issues of current engineering approaches ...
Sergiy Gan +2 more
wiley +1 more source
Atomistic simulations of plasticity heterogeneity in gradient nano-grained FCC metals
Materials & Design, 2022 Gradient nano-grained (GNG) metals are an emerging class of heterogeneous structured materials with extraordinary mechanistic performances and unnatural plasticity mechanisms, which are unachievable in traditional homogeneous nanocrystalline metals. Here,
Like Xu +3 more
doaj +1 more source
Limit theorems for gradient-dependent elastoplastic geomaterials
International Journal of Solids and Structures, 2007 AbstractIn this paper, the limit theorems proposed by Drucker and co-workers are reformulated to address a class of gradient-dependent elastoplastic geomaterials. The gradient effects are accounted for by incorporating strain gradients and their conjugate higher-order stresses into the constitutive descriptions. Gradient-dependent equilibrium equations
Zhao, Jidong +3 more
openaire +3 more sources
FEBS Letters, EarlyView.C‐mannosylation is a unique form of protein glycosylation. In this study, we demonstrated that ADAMTS1 is C‐mannosylated at Trp562 and Trp565 in human testicular germ cell tumor NEC8 cells. We found that C‐mannosylation of ADAMTS1 is essential for its secretion, processing, enzymatic activity, and ability to promote vasculogenic mimicry. These findings
Takato Kobayashi +5 more
wiley +1 more source
FEBS Letters, EarlyView.Spinal muscular atrophy (SMA) is a genetic disease affecting motor neurons. Individuals with SMA experience mitochondrial dysfunction and oxidative stress. The aim of the study was to investigate the effect of an antioxidant and neuroprotective substance, ergothioneine (ERGO), on an SMNΔ7 mouse model of SMA.
Francesca Cadile +8 more
wiley +1 more source
Proton Gradients and Proton-Dependent Transport Processes in the Chloroplast [PDF]
Frontiers in Plant Science, 2016 Proton gradients are fundamental to chloroplast function. Across thylakoid membranes, the light induced -proton gradient is essential for ATP synthesis. As a result of proton pumping into the thylakoid lumen, an alkaline stromal pH develops, which is required for full activation of pH-dependent Calvin Benson cycle enzymes.
Höhner, Ricarda +3 more
openaire +5 more sources