Results 41 to 50 of about 1,063,527 (322)

Description of the Seminiferous Epithelium Cycle Stages in the Zebra Finch Taeniopygia guttata

open access: yesAnimals
Spermatogenesis in passerine birds remains poorly characterized. Previous studies focused on the steps of spermiogenesis, while a detailed staging of the seminiferous epithelium cycle is still lacking for this order.
Tatiana Bikchurina   +5 more
doaj   +1 more source

Growth model and structure evolution of Ag layers deposited on Ge films

open access: yesBeilstein Journal of Nanotechnology, 2018
We investigated the crystallinity and optical parameters of silver layers of 10–35 nm thickness as a function 2–10 nm thick Ge wetting films deposited on SiO2 substrates.
Arkadiusz Ciesielski   +4 more
doaj   +1 more source

Direct Production of Ferrochrome by Segregation Reduction of Chromite in the Presence of Calcium Chloride

open access: yesMetals, 2018
A solid reduction process is described whereby chromite is reduced with the help of calcium chloride to produce ferrochrome alloy powders with high metal recovery. The process involves segregation reduction of chromite using graphite as the reductant and
Dawei Yu, Dogan Paktunc
doaj   +1 more source

Survivin and Aurora Kinase A control cell fate decisions during mitosis

open access: yesMolecular Oncology, EarlyView.
Aurora A interacts with survivin during mitosis and regulates its centromeric role. Loss of Aurora A activity mislocalises survivin, the CPC and BubR1, leading to disruption of the spindle checkpoint and triggering premature mitotic exit, which we refer to as ‘mitotic slippage’.
Hana Abdelkabir   +2 more
wiley   +1 more source

Effect of surface hydrogen on the anomalous surface segregation behavior of Cr in Fe-rich Fe-Cr alloys

open access: yes, 2012
The segregation behavior of Cr in dilute Fe-Cr alloys is known to be anomalous since the main barrier for surface segregation of Cr in these alloys arises not from the topmost surface layer but from the subsurface layer where the solution energy of Cr is
Gupta, Michèle   +2 more
core   +2 more sources

Competition of Brazil nut effect, buoyancy, and inelasticity induced segregation in a granular mixture [PDF]

open access: yes, 2009
It has been recently reported that a granular mixture in which grains differ in their restitution coefficients presents segregation: the more inelastic particles sink to the bottom.
Brito, Ricardo, Soto, Rodrigo
core   +3 more sources

Class IIa HDACs forced degradation allows resensitization of oxaliplatin‐resistant FBXW7‐mutated colorectal cancer

open access: yesMolecular Oncology, EarlyView.
HDAC4 is degraded by the E3 ligase FBXW7. In colorectal cancer, FBXW7 mutations prevent HDAC4 degradation, leading to oxaliplatin resistance. Forced degradation of HDAC4 using a PROTAC compound restores drug sensitivity by resetting the super‐enhancer landscape, reprogramming the epigenetic state of FBXW7‐mutated cells to resemble oxaliplatin ...
Vanessa Tolotto   +13 more
wiley   +1 more source

The Relative Importance of Institutional Trust in Countering Feelings of Unsafety in Disadvantaged Neighbourhoods

open access: yesEuropean Spatial Research and Policy, 2013
The segregated nature of urban areas reflects an uneven exposure to risk and unsafety. This article analyzes the relevance of place to people’s feelings of unsafety by comparing questionnaire responses from people living in a segregated, disadvantaged ...
Monika Persson
doaj   +1 more source

Strength through diversity: how cancers thrive when clones cooperate

open access: yesMolecular Oncology, EarlyView.
Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken   +3 more
wiley   +1 more source

Modelling the intermixing effects in highly strained asymmetric InGaAs/GaAs quantum well [PDF]

open access: yes, 2015
In this work, we have theoretically investigated the intermixing effect in highly strained In$_{0.3}$Ga$_{0.7}$As/GaAs quantum well (QW) taking into consideration the composition profile change resulting from in-situ indium surface segregation.
Baira, M.   +3 more
core   +2 more sources

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