Results 21 to 30 of about 7,059,863 (318)

Mechanisms, Laws, and Regularities [PDF]

open access: yes, 2011
Leuridan argued that mechanisms cannot provide a genuine alternative to laws of nature as a model of explanation in the sciences, and he advocates Mitchell’s pragmatic account of laws.
Andersen, Holly   +2 more
core   +1 more source

Virophages and retrotransposons colonize the genomes of a heterotrophic flagellate

open access: yeseLife, 2021
Virophages can parasitize giant DNA viruses and may provide adaptive anti-giant virus defense in unicellular eukaryotes. Under laboratory conditions, the virophage mavirus integrates into the nuclear genome of the marine flagellate Cafeteria burkhardae ...
Thomas Hackl   +4 more
doaj   +1 more source

Effect of gamma irradiation on phenol content, antioxidant activity and biological activity of black maca and red maca extracts (Lepidium meyenii walp) [PDF]

open access: yes, 2016
This study was performed to determine the effects of gamma irradiation on UV spectrum on maca, total content of polyphenols, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activities and in vivo biological activities of red and black maca ...
Zevallos-Concha, A   +5 more
core   +1 more source

Imprinting Mechanisms [PDF]

open access: yesGenome Research, 1998
A number of recent studies have provided new insights into mechanisms that regulate genomic imprinting in the mammalian genome. Regions of allele-specific differential methylation (DMRs) are present in all imprinted genes examined. Differential methylation is erased in germ cells at an early stage of their development, and germ-line-specific ...
Constância, Miguel   +3 more
openaire   +4 more sources

Analysis of PARP inhibitor toxicity by multidimensional fluorescence microscopy reveals mechanisms of sensitivity and resistance

open access: yesNature Communications, 2018
Methods to study anti-cancer drugs cytotoxicity are often low throughput and rely on population average. Here the authors present an automated image-based cytometry method to quantify multiple cytotoxicity parameters in single cells, and use it to study ...
Jone Michelena   +5 more
doaj   +1 more source

Полиномиальные аппроксимации некоторых функций активации нейронных сетей

open access: yesИнформатика и автоматизация, 2022
Активное внедрение систем машинного обучения ставит актуальную задачу обеспечения их защиты от различных типов атак, направленных на нарушение свойств конфиденциальности, целостности и доступности как обрабатываемых данных, так и обучаемых моделей. Одним
Grigory Marshalko, Julia Trufanova
doaj   +1 more source

Calculation Model of Relative Permeability in Tight Sandstone Gas Reservoir with Stress Sensitivity

open access: yesGeofluids, 2021
During the development of tight gas reservoir, the irreducible water saturation, rock permeability, and relative permeability change with formation pressure, which has a significant impact on well production.
Jin Yan   +4 more
doaj   +1 more source

A Dataset for Mechanical Mechanisms

open access: yesCoRR
This study introduces a dataset consisting of approximately 9,000 images of mechanical mechanisms and their corresponding descriptions, aimed at supporting research in mechanism design. The dataset consists of a diverse collection of 2D and 3D sketches, meticulously curated to ensure relevance and quality. We demonstrate the application of this dataset
Farshid Ghezelbash   +2 more
openaire   +2 more sources

Zebrafish epiboly: mechanics and mechanisms

open access: yesThe International Journal of Developmental Biology, 2010
Gastrulation involves of a series of coordinated cell movements to organize the germ layers and establish the major body axes of the embryo. One gastrulation movement is epiboly, which involves the thinning and spreading of a multilayered cell sheet. Epiboly plays a prominent role in zebrafish gastrulation and studies of zebrafish epiboly have provided
Stephanie E, Lepage, Ashley E E, Bruce
openaire   +3 more sources

Advances in the basic study of lacustrine shale evolution and shale oil accumulation

open access: yesShiyou shiyan dizhi, 2020
This manuscript provides a review of the recent advances in the study of fundamental processes and geological drivers involved in the lacustrine shale deposition, burial diagenesis, thermal maturation and in-situ oil accumulation, aimed at identifying ...
Maowen LI   +10 more
doaj   +1 more source

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