Results 91 to 100 of about 5,866,214 (252)

Exploring vaginal microbiota–tissue resident stem cell crosstalk: VCAM1/Akt signaling ‐mediated enhancement of regenerative capacity

Interdisciplinary Medicine, EarlyView.
Vaginal microbiota‐derived secretory factors enhance the regenerative capacity of human endometrial stem cells by upregulating VCAM1 and activating PI3K/Akt signaling. This microbiota–stem cell crosstalk promotes self‐renewal, migration, multilineage differentiation, and metabolic reprogramming in vitro and in vivo, establishing a novel microbiota ...
Soo‐Rim Kim, Eun‐Kyung Min, Choon‐Mi Lee, Kun‐Hee Na, Chan Hum Park, YunJae Jung, Hwa‐Yong Lee   +6 more
wiley   +1 more source

Food Security Versus Environmental Health: The Nitrogen Dilemma

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Nitrogen is an essential element for plant growth and, consequently, crop production. However, the cycling of nitrogen in the environment can have negative effects. Here, we review the historical development of scientific and public awareness of these effects and the influence this has had on political action to control them.
Henrike Mielenz, Norbert Bischoff, Klaus Butterbach‐Bahl, Uwe Häußermann, Kurt‐Christian Kersebaum, Karin Rather, Burkhard Stever‐Schoo, Reinhard Well, Claas Nendel   +8 more
wiley   +1 more source

Experimental study on local scour around large-diameter submerged cylinders under combined waves and current action

Shui kexue jinzhan, 2019
The characteristics of local scour around large-diameter submerged cylinders are quite different from the non-submerged ones under combined wave and current conditions. Local scour model tests are carried out in a wave-current flume. A submerged cylinder
CHENG Yongzhou, LYU Xing, WANG Wensen, HUANG Xiaoyun, XIA Bo   +4 more
doaj   +1 more source

New Schmidt hammer exposure‐age dating calibrations for the Last Glacial Termination in NW Scotland: Development and application to undated Torridon Group sandstone surfaces in Wester Ross

Journal of Quaternary Science, EarlyView.
ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry, David Small, Oliver T. Bartlett, Jonathan Newitt   +3 more
wiley   +1 more source

LOCAL SCOUR AMD CURRENT AROUND A POROUS BREAKWATER

Coastal Engineering Proceedings, 1976
Scour at the foot of vertical homogeneous crib style walls which were used as models for detached breakwaters, and the rise of mean water level in the shoreside region of the breakwaters were experimentally investigated, and the experimental results were compared to some field data.
Shintaro Hotta, Nobuo Marui
openaire   +2 more sources

Evaluation of methods for the analysis of oxygen and carbon dioxide in water, sediment, litter, and soil

Limnology and Oceanography: Methods, EarlyView.
Abstract Choosing an appropriate analyzer to measure concentrations of oxygen (O2) and carbon dioxide (CO2) during biogeochemical cycling studies can be difficult, considering the range of options available. While several studies examine the abilities of specific analyzers, comparison of multiple analyzers and environmental sample types is lacking.
Elizabeth Jakobsson, Konstantinos‐Marios Vaziourakis, Lars Tranvik   +2 more
wiley   +1 more source

Wave–Current Force Characteristics of Monopile Foundations on Scoured Seabeds

Journal of Marine Science and Engineering
Local scour around offshore wind turbine foundations is a common engineering challenge. It changes the hydrodynamic loads and affects the foundation’s load-bearing capacity.
Zhiyong Zhang, Youxiang Lu, Jinlong Zhang, Jin Xu, Guodan Zheng, Chunyang Xu, Kun He, Gang Chen, Yuanping Yang   +8 more
doaj   +1 more source

Integrating and assessing metacommunity drivers of ecosystem function and resilience in benthic algal systems

Oikos, EarlyView.
Understanding the scales and mechanisms by which species composition interacts with ecosystem functions is critical for forecasting the effects of environmental perturbations on ecosystem services. However, the linkages between what regulates the ecosystem functions of dispersal‐capable networks of communities (metacommunities) and what regulates a ...
Thomas P. Shannon, Evelyn E. Gaiser
wiley   +1 more source

Comparative Analyses of Prediction Formulas for Maximum Scour Depth Around Monopile Foundations in Clay Soils

南方能源建设
[Objective] In marine and river environments, local scour around pile foundations can lead to severe damage to the structures, resulting in significant economic losses and potential casualties.
Li CAI, Ben HE, Peiqing ZHAO, Qingkai SONG, Wengang QI   +4 more
doaj   +1 more source

The importance of biodiversity components differs among wood‐based material Nature's contributions to people (NCP) in a tropical montane ecosystem

Oikos, EarlyView.
Biodiversity can influence forest productivity, but this does not necessarily translate into higher provision of wood‐based Nature's contributions to people (NCP), as only a subset of the wood produced is used for each NCP. Biodiversity–NCP relationships therefore require further assessment.
Koggani Dickson Koggani, Peter Manning, Andreas Ensslin, Gemma Rutten, Armin Komposch, Markus Fischer, Andreas Hemp, Andrea Larissa Boesing   +7 more
wiley   +1 more source