Results 91 to 100 of about 6,257,228 (299)

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

Experimental Investigation of Scour Around Tripod Foundations Under Steady Current

Journal of Marine Science and Engineering
Scour around a tripod foundation under a steady current is investigated experimentally. Experiments are conducted on three tripod foundation models and three flow-angle-of-attack conditions. The three tripod foundations differ only in the size of the top
Muhammad Adnan, Ming Zhao, Helen Wu, Vatsal Dhamelia, Jinzhi Zhang, Heath Palmer   +5 more
doaj   +1 more source

Hazards due to large wood accumulations: Local scour and backwater rise

E3S Web of Conferences, 2018
Large wood (LW) in rivers increases the flow variability and provides habitats for various species. During flood events, transported logs can accumulate at river infrastructures and increase the flood hazard.
Schalko Isabella, Schmocker Lukas, Weitbrecht Volker, Boes Robert M.   +3 more
doaj   +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

Simultaneous Effect of Collar and Roughness on Reducing and Controlling the Local Scour around Bridge Abutment

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2017
Investigation of local scour around hydraulic structures particularly bridges is of crucial importance in river engineering. Bridge destruction mostly occurs as a result of scour phenomenon around piers and abutments, not because of structural weaknesses.
Hamed Shahsavari, Manouchehr Heidarpour, Mohammad Mohammadalizadeh   +2 more
doaj   +1 more source

Detecting scour and liquefaction using OBS sensors [PDF]

, 2016
This work examined the performance of Optical Back-Scatter (OBS) sensors for detecting sediment movement around a model subsea structure. Three types of tests were conducted using a circular cylinder model equipped with 16 OBS sensors.
Cheng, L., Draper, S., Zhao, Ming (R16667), Draper, Scott, Tang, G., Zhao, M., Tang, Guoqiang, An, H., An, Hongwei, Cheng, Liang   +9 more
core  

Hybrid Machine Learning–Geostatistical Modeling of Soil Quality in Saline–Sodic Soils Under Arid Agroecosystems of Northwestern Peru

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Soil fertility management in mango and banana production systems in northern Peru is limited by marked spatial heterogeneity, driven by chemical imbalances, particularly salinity, alkalinity, and sodicity. Aim This study developed a spatial predictive framework to assess soil quality across the agricultural area of Morropón Province,
Sebastian Casas‐Niño, Gerson La Rosa Lama, Sharon Mejia, Ruth Mercado, Kenyi Quispe   +4 more
wiley   +1 more source

Scour Development in Square Pile Groups: Effects of Pile Number and Spacing

Civil Engineering Dimension
Local scour around pile group foundations poses a significant risk to hydraulic and coastal structures, particularly when multiple piles interact with complex flow patterns. This study presents a numerical investigation of local scour around pile groups
Aisyah Dwi Puspasari, Jyh-Haw Tang
doaj   +1 more source

Local scour at single piers revisited [PDF]

, 2014
The paper summarizes recent contributions of the authors on the effects of relative flow depth,relative sand size, time and fluid viscosity, on the scour depth at single piers.
Fael, Cristina, Lança, Rui, Couto, Lúcia, Cardoso, António   +3 more
core  

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