نتایج جستجو برای: retraction
تعداد نتایج: 13428 فیلتر نتایج به سال:
Abstract Retraction of published research is laudable as a post-publication self-correction science but undesirable an indicator grave violations and publication ethics. Given its various adverse consequences, retraction has stigmatizing effect both in beyond the academic community. However, little theoretical attention been paid to nature retraction. Drawing on stigma theories informed by retr...
We present evidence that synapse retraction occurs during normal synaptic growth at the Drosophila neuromuscular junction (NMJ). An RNAi-based screen to identify the molecular mechanisms that regulate synapse retraction identified Arp-1/centractin, a subunit of the dynactin complex. Arp-1 dsRNA enhances synapse retraction, and this effect is phenocopied by a mutation in P150/Glued, also a dynac...
Retraction: The Effect of Productive Safety Net Programme on Household Food Consumption and Dietary Diversity in EthiopiaPlease find the retraction statement below:Feyisa, M. N. (2022). Ethiopia. Frontiers Sustainable Systems. 6:714001. doi: 10.3389/fsufs.2022.714001.The journal retracts 2nd March, 2022 publication, cited above.Following publication article, author came forward to inform us tha...
Retraction of the taut, trailing portion of a moving chick heart fibroblast in vitro is an abrupt dynamic process. Upon retraction, the fibroblast tail always ruptures, leaving a small amount of itself attached to the substratum by focal contacts. Time-lapse cinemicrography shows that retraction produces a sudden, massive movement of both surface and cytoplasmic material toward a cluster of foc...
In this paper we establish a characterization of abelian compact Hausdorff semigroups with unique idempotent and ideal retraction property. We also introduce a function algebra on a semitopological semigroup whose associated semigroup compactification is universal withrespect to these properties.
OBJECTIVE To study journals' responses to a request from the State Medical Association of Rheinland-Pfalz, Germany, to retract 88 articles due to ethical concerns, and to check whether the resulting retractions followed published guidelines. DESIGN Descriptive cross-sectional study. POPULATION 88 articles (18 journals) by the anaesthesiologist Dr. Boldt, that warranted retraction. METHOD ...
OBJECTIVE The present study used a split-mouth design to compare the amount of canine movement and the retraction time between brackets with Clear Snap and brackets with stainless steel ligature wires for three different levels of retraction force. MATERIALS AND METHODS A sample of 30 patients was used. After initial leveling, the canine was retracted using a 50-g (n = 10), 100-g (n = 10), or...
In N1E-115 cells, neurite retraction induced by neurite remodelling factors such as lysophosphatidic acid, sphingosine 1-phosphate and semaphorin 3A require the activity of phosphatidylinositol 4-phosphate 5-kinases (PIP5Ks). PIP5Ks synthesise the phosphoinositide lipid second messenger phosphatidylinositol(4,5)bisphosphate [PtdIns(4,5)P₂], and overexpression of active PIP5K is sufficient to in...
Fibrinogen is a plasma protein that interacts with integrin alphaIIb beta3 to mediate a variety of platelet responses including adhesion, aggregation, and clot retraction. Three sites on fibrinogen have been hypothesized to be critical for these interactions: the Ala-Gly-Asp-Val (AGDV) sequence at the C-terminus of the gamma chain and two Arg-Gly-Asp (RGD) sequences in the Aalpha chain. Recent ...
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