Results 51 to 60 of about 3,458,432 (336)
A New Method for Evaluating the Stability of Retaining Walls
BuildingsThe existing stability analysis of Coulomb retaining walls is derived on the basis of four assumptions, and there is no clear description of the interaction mechanism among wedge-shaped bodies, retaining walls, and the two.
Shiqi Zhang, Yingfa Lu, Lier Lu
doaj +1 more source
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Artificial molecular machines and motors—Design and control of nanoscale motion
FEBS Letters, EarlyView.Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley +1 more source
Outflows and mass accretion in collapsing dense cores with misaligned rotation axis and magnetic field [PDF]
Monthly Notices of the Royal Astronomical Society Letters, 2010 Outflows and jets are intimately related to the formation of stars, and play an important role in redistributing mass, energy and angular momentum within the dense core and parent cloud.
Andrea Ciardi, P. Hennebelle
semanticscholar +1 more source
FEBS Letters, EarlyView.Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise +5 more
wiley +1 more source
Renal pelvis stone in reverse kidney: A case report and literature review
Urology Case Reports, 2020 In neonates, kidney and urinary tract anomalies, like rotation anomalies, may be observed at rates of 3–11%. During rise to the lumbar region, the kidney completes rotation from left to right around the long axis from top to bottom and the renal hilum ...
Yavuz Güler
doaj +1 more source
Twisted Surfaces with Null Rotation Axis in Minkowski 3-Space
, 2016 We examine curvature properties of twisted surfaces with null rotation axis in Minkowski 3-space. That is, we study surfaces that arise when a planar curve is subject to two synchronized rotations, possibly at different speeds, one in its supporting ...
Wendy Goemans, I. Van de Woestyne
semanticscholar +1 more source
Object rotation axis from shading [PDF]
1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258), 1999 In this paper, a non-complex estimator is developed for the tilt angle of the rotation axis of an object that is illuminated by a point light source. The tilt angle defines the orientation of the 2D projection of the 3D object rotation axis in the image plane and is a strong clue for image understanding.
openaire +1 more source
Smaller is better: nanobodies meet NMR
FEBS Letters, EarlyView.Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley +1 more source
Statistics of asteroid axis rotation [PDF]
, 1991 Показано, что по зависимостям скорости осевого вращения от диаметра и удельного углового момента от массы, астероиды делятся на три группы в соответствии с разной степенью влияния столкновительной эволюции на параметры, их осевого вращения.
Александров, Ю.В.
core +1 more source