Results 131 to 140 of about 15,152,741 (289)

Laparoscopic Heller Esophagomyotomy is Safe and Effective in Rural East Africa

open access: yesThe Annals of African Surgery, 2020
Background: The incidence of achalasia in subSaharan Africa is not known. Experience in our region suggests the disorder affects mainly younger patients. Esophagomyotomy is the gold standard treatment for achalasia. Benefits of laparoscopic treatment are
Ndegwa W   +4 more
doaj  

Many-body problems in high temperature superconductivity

open access: yes, 1991
To be published in "Recent Progress in Many-Body Theories", eds. C.E. Campbell and E.
International Centre for Theoretical Physics, Trieste (Italy)   +1 more
core  

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

GMM with many weak moment conditions [PDF]

open access: yes
Using many moment conditions can improve efficiency but makes the usual GMM inferences inaccurate. Two step GMM is biased. Generalized empirical likelihood (GEL) has smaller bias but the usual standard errors are too small.
Frank Windmeijer, Whitney Newey
core  

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

Many faces, many opinions, many views

open access: yes, 2016
Introduction by Klaas Molenaar and Margot Lobbezoo about the diversity of entrepeneurs. Every day we meet entrepreneurs; when we visit the deli at the corner, order a taxi, have a cup of tea in the bar on the other side of the street or go to a hairdresser. They are everywhere and they have many faces. And there are many opinions about entrepreneurship.
Molenaar, N. (Klaas), Lobbezoo, Margot
openaire  

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

The ubiquitin system in normal and infected germinal center B cells

open access: yesFEBS Letters, EarlyView.
The ubiquitin system plays a central role in germinal center (GC) B cells, influencing differentiation to long‐lived memory B cells. Oncogenic gammaherpesviruses gain access to memory B cells by establishing latency in GC B cells. Mapping ubiquitin mechanisms in normal and infected GC B cells will define specific molecular circuits in B cells germane ...
Destiny Davis   +2 more
wiley   +1 more source

Time Symmetry and the Many-Worlds Interpretation [PDF]

open access: yes, 2009
An attempt to solve the collapse problem in the framework of a time-symmetric quantum formalism is reviewed. Although the proposal does not look very attractive, its concept - a world defined by two quantum states, one evolving forwards and one evolving ...
Vaidman, Lev
core  

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