Results 91 to 100 of about 43,191 (254)

连杆曲线轨迹综合的特征图谱

open access: yesJixie chuandong, 2005
A feature atlas used for a locus synthesis was proposed.After analyzing the features of kind and size of coupler curve in the coupler plane,the feature atlas of coupler curve is completed.A cusp curve,an osculating curve and a cave and convex boundary ...
詹葵华, 黄锡坤
doaj  

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS 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

Analysis on the Maximum Static Longitudinal Force of Heavy Haul Locomotive Coupler

open access: yes机车电传动, 2015
The effect of key parameters on the stability of heavy haul locomotive coupler was studied to rapidly estimate the bearing stability of coupler. The structure and longitudinal force principle of the heavy haul locomotive coupler were analyzed, and ...
DUAN Muying, ZHANG Weixiu, YAO Yuan
doaj  

Papaverine effect on superficial vein in thumb replantation procedure: A case study

open access: yesClinical Case Reports
Key Clinical Message Topical papaverine is an effective vasodilator that can be used for dilating small veins to accept venous couplers for thumb replantation.
Mahra AlSheryani, Ammar AlDhamin
doaj   +1 more source

The heterodimeric amino acid transporters (HAT) of the SLC7/SLC3 family: A structure−function relationships and relevance to human pathology

open access: yesFEBS 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

Leucine‐rich glioma inactivated 1 (LGI1) is a ganglioside‐binding protein

open access: yesFEBS Letters, EarlyView.
Neuronal hyperexcitability associated with a decrease/absence of the extracellular protein LGI1 has been suggested to be primarily due to the downregulation of Kv1 channel expression. The molecular mechanisms underlying this decrease have not yet been elucidated.
Kévin Debreux   +7 more
wiley   +1 more source

Bragg grating design method for the implementation of an optimised symmetric add/drop multiplexer

open access: yes
An efficient and simple method is proposed for the design of a novel Bragg grating based optical add/drop multiplexer. Central to this method is the existence of generic engineering curves that relate for any BG of a specific apodization profile, its ...
Riziotis, C., Zervas, M.N.
core   +1 more source

Directional coupler using gap plasmon waveguides

open access: yes, 2008
Here, we demonstrate that efficient nano-optical couplers can be developed using closely spaced gap plasmon waveguides in the form of two parallel nano-sized rectangular slots in a thin metal film or membrane.
Gramotnev, Dmitri   +2 more
core   +1 more source

A context‐dependent modulatory role for eIF6 in acquired resistance to vemurafenib in melanoma

open access: yesFEBS Letters, EarlyView.
Acquired resistance to vemurafenib upregulates the translation factor eIF6 in melanoma cells. Silencing eIF6 in resistant cells reduces proliferation and partially restores drug sensitivity, whereas its overexpression increases sensitivity across melanoma lines regardless of BRAF status, via modulation of mTOR, S6K, and MAPK signaling.
George Kyriakopoulos   +9 more
wiley   +1 more source

A reduced-size branch-line coupler for improved LDMOS balanced power amplifiers

open access: yes, 2009
This article discusses the application of a reduced-size branch-line coupler in the design of a LDMOS class-AB balanced power amplifier at a center frequency of 2.14 GHz.
Budimir, D.   +2 more
core   +1 more source

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