Results 11 to 20 of about 7,362,319 (231)

Condition number analysis and preconditioning of the finite cell method [PDF]

open access: yes, 2016
The (Isogeometric) Finite Cell Method - in which a domain is immersed in a structured background mesh - suffers from conditioning problems when cells with small volume fractions occur.
de Prenter, F.   +3 more
core   +12 more sources

Aphid Prey of \u3ci\u3ePassaloecus Cuspidatus\u3c/i\u3e (Hymenoptera: Sphecidae) [PDF]

open access: yes, 2017
Provisioning activity of Passaloecus cuspidatus extended from 29 May through 6 August 1987. Eighty trap-nests contained 281 provisioned cells containing 9,618 aphids.
Fricke, John M
core   +2 more sources

Effect of FSH on testicular morphology and spermatogenesis in gonadotrophin-deficient hypogonadal mice lacking androgen receptors [PDF]

open access: yes, 2010
Follicle stimulating hormone (FSH) and androgen act to stimulate and maintain spermatogenesis. FSH acts directly on the Sertoli cells to stimulate germ cell number and acts indirectly to increase androgen production by the Leydig cells.
Abel, M.H.   +4 more
core   +2 more sources

Within-host transmission strategies of transovarial, feminizing parasites of Gammarus duebeni [PDF]

open access: yes, 1998
The amphipod Gammarus duebeni harbours several species of vertically transmitted, feminizing microsporidian parasites. G. duebeni were collected from 3 localities in the UK. Animals from Budle Bay, Northumberland, were infected with Octosporea effeminans,
Dunn, A.M., Taneyhill, D.E., Terry, R.S.
core   +1 more source

Poly(ADP-ribose)polymerase activity controls plant growth by promoting leaf cell number [PDF]

open access: yes, 2014
A changing global environment, rising population and increasing demand for biofuels are challenging agriculture and creating a need for technologies to increase biomass production.
Claeys, Hannes   +8 more
core   +3 more sources

Sensing Cell-Culture Assays with Low-Cost Circuitry [PDF]

open access: yes, 2018
An alternative approach for cell-culture end-point protocols is proposed herein. This new technique is suitable for real-time remote sensing. It is based on Electrical Cell-substrate Impedance Spectroscopy (ECIS) and employs the Oscillation-Based Test ...
Daza Navarro, María Paula   +7 more
core   +1 more source

Spermatogenesis and sertoli cell activity in mice lacking Sertoli cell receptors for follicle stimulating hormone and androgen [PDF]

open access: yes, 2008
Spermatogenesis in the adult male depends on the action of FSH and androgen. Ablation of either hormone has deleterious effects on Sertoli cell function and the progression of germ cells through spermatogenesis.
A. Monteiro   +63 more
core   +2 more sources

Effect of promoter architecture on the cell-to-cell variability in gene expression [PDF]

open access: yes, 2010
According to recent experimental evidence, the architecture of a promoter, defined as the number, strength and regulatory role of the operators that control the promoter, plays a major role in determining the level of cell-to-cell variability in gene ...
A Bar-Even   +104 more
core   +5 more sources

Dendritic cells steering antigen and leukocyte traffic in lymph nodes

open access: yesFEBS Letters, EarlyView.
Dendritic cells are key players in the activation of T cells and their commitment to effector function. In this In a Nutshell Review, we will discuss how dendritic cells guide the trafficking of antigen and leukocytes in the lymph node, thus influencing T‐cell activation processes. Dendritic cells (DCs) play a central role in initiating and shaping the
Enrico Dotta   +3 more
wiley   +1 more source

The Evolution of Per-cell Organelle Number [PDF]

open access: yesFrontiers in Cell and Developmental Biology, 2016
Organelles with their own distinct genomes, such as plastids and mitochondria, are found in most eukaryotic cells. As these organelles and their host cells have evolved, the partitioning of metabolic processes and the encoding of interacting gene products have created an obligate codependence.
openaire   +4 more sources

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