Results 141 to 150 of about 122,119 (309)

T2T Genome Assembly and Multi‐Omics Data Reveal Terrestrial Adaptation and Mucus Biosynthesis in Tropical Leatherleaf Slug (Laevicaulis alte)

open access: yesAdvanced Science, EarlyView.
A gap‐free genome assembly and multi‐omics comparison of the terrestrial slug Laevichaulis alte with an aquatic relative reveal that expansion of the VEGF family orchestrates mucus production, lipid metabolism, and immune defense—highlighting key molecular innovations for conquering life on land.
Gang Wang   +19 more
wiley   +1 more source

Embryo quality assessment in in vitro fertilization (IVF) using metabolite footprints secreted to human embryo culture media by ATR-FTIR spectroscopy and multivariate analysis

open access: yes, 2016
Objective of this study is the embryo quality can be determined noninvasively using FTIR spectroscopy to analyze human embryo culture media in IVF treatment.
Garip, S.   +6 more
core  

NAD+ Metabolism Licenses Zygotic Genome Activation via PARP7‐Mediated ADP‐Ribosylation of UHRF1 in Mouse Early Embryos

open access: yesAdvanced Science, EarlyView.
This study uncovers a metabolic‐epigenetic axis licensing zygotic genome activation (ZGA) in mouse embryos. A developmental decline in NAD+ levels activates PARP7, which mono‐ADP‐ribosylates and stabilizes UHRF1. This modification promotes the establishment of permissive histone acetylation marks, thereby facilitating timely ZGA.
Guangyi Cao   +13 more
wiley   +1 more source

Age-associated aberrations of the cumulus-oocyte interaction and in the zona pellucida structure reduce fertility in female mice

open access: yesCommunications Biology
, One of the major age-related declines in female reproductive function is the reduced quantity and quality of oocytes. Here we demonstrate that structural changes in the zona pellucida (ZP) were associated with decreased fertilization rates from 34- to ...
Yu Ishikawa-Yamauchi   +11 more
doaj   +1 more source

Pyridine‐Isomerism‐Driven Spin Engineering at a COP‐Fe3O4 Interface for High‐Performance Oxygen Reduction Electrocatalysis

open access: yesAdvanced Energy Materials, EarlyView.
Strategically adjusting the pyridine nitrogen position in the polymer matrix (pyridine isomerism) intensifies its interaction with embedded Fe3O4 nanocrystals. This enhanced interaction induces a spin‐state transition in Fe from low‐spin to intermediate‐spin, accompanied by refined d‐orbital properties.
Ruiqi Cheng   +11 more
wiley   +1 more source

Clinical aspects of embryo implantation: from the perspective of tissue perfusion.

open access: yes, 2006
Hypothesis: Pelvic perfusion is the pivotal factor for the outcome of in vitro fertilisation (IVF) treatment once clinical and embryological variables are controlled for their effect.;Demonstration of Hypothesis: In a series of three studies, the ...
Ozturk, O., Ozturk, Ozkan
core  

Adapting to Changing Rainfall and Developing Off‐Farm Employment: Implications for the Adoption of Direct Seeding in Rice Production

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Rice is the main staple food for more than half of the world's population and the income from rice is an essential source for livelihoods of millions of households. We examine whether direct seed in rice production is an adaptation of rice farmers to rainfall changes and farm labor scarcity.
Manh Hung Do
wiley   +1 more source

Human oocyte in vitro fertilization studies in 1955

open access: yes, 2011
Стаття описує ранні дослідження радянського ученого Г.М. Петрова щодо запліднення людських яйцеклітин в пробірці, які проводилися у Криму в 1950-х роках. Незалежно від Л.Б.
Литвинов, В.В.
core   +1 more source

Epididymal epithelial cells facilitate NEU1 loading to modulate sperm α-2,6 sialylation, enhance maturation and motility

open access: yesCellular and Molecular Life Sciences
Background Male infertility is a prevalent reproductive disorder worldwide, with decreased sperm quality—particularly reduced motility and fertilization capacity—being one of its common causes.
Shiqi Yi   +10 more
doaj   +1 more source

Drivers of Precision Agriculture Adoption in Italian Viticulture

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT This study examines the main drivers influencing the adoption of two types of precision farming technologies in the viticultural sector: Decision Support Systems (DSSs) and Variable Rate Technologies (VRTs). We apply a partial proportional odds model and find that socio‐demographic characteristics are not significant determinants of adoption ...
Olimpia Fontana   +3 more
wiley   +1 more source

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