Results 111 to 120 of about 53,800 (258)

An in vitro comparison of PDGF‐BB release from composite graft materials containing leukocyte‐rich platelet‐rich fibrin and platelet‐derived growth factor‐BB and β‐tricalcium phosphate

open access: yesJournal of Periodontology, EarlyView.
Abstract Background The clinical efficacy of growth factors in regenerative procedures may depend on both dosage and sustained delivery during critical phases of healing. This study aimed to evaluate in vitro release kinetics of platelet‐derived growth factor‐BB (PDGF‐BB) from various graft materials, including recombinant human PDGF‐BB (rhPDGF‐BB ...
Farahnaz Fahimipour   +4 more
wiley   +1 more source

Ostracod faunal and geochemical evidence for the impact of Hoxnian (MIS 11c) sea levels in eastern England

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Marine isotope substage 11c (~426–366 ka) is widely regarded as the most recent Pleistocene interglacial that is broadly analogous to the Holocene. The timing and magnitude of sea‐level changes during MIS 11 have been much debated, particularly concerning whether sea levels were significantly higher than during the Holocene. Empirical evidence
Tom S. White   +3 more
wiley   +1 more source

Land Use Spatial Optimization Based on Multi‐Objective Ant Colony Algorithm and FLUS Model: A Case Study of Korla City and Tiemenguan City, China

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT In southern Xinjiang, China, scarce land and water resources and fragile ecosystems have intensified land use conflicts, making land resource allocation optimization essential for sustainable development in arid oasis areas. Focusing on Korla and Tiemenguan, this study aims to coordinate economic benefits, ecological benefits, and food ...
Kaifa Zhang   +5 more
wiley   +1 more source

A Study on the Distribution Characteristics of Salinity and Nutrients and the Migration Mechanism of Soil Salt in the Delingha Saline‐Alkali Soil Profile of the Qaidam Basin

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Soil salinization negatively impacts the economic development and ecological environment, particularly in the arid and semiarid regions of China. The Qaidam Basin constitutes a major distribution area of saline‐alkali land in the country. However, the distribution patterns of salinity and nutrients within soil profiles and the underlying salt ...
Hongpan Xue   +8 more
wiley   +1 more source

Gypsum lakes, sandflats and soils revealed from the Triassic Red Peak Formation of the Chugwater Group, north‐central Wyoming

open access: yesThe Depositional Record
Bedded gypsum is relatively common in bedded evaporites associated with red bed siliciclastics of Permo‐Triassic Pangea. However, little attention has been paid to the textures of ancient gypsum, which can be used to refine interpretations of ...
Maya Yamei Bradford, Kathleen C. Benison
doaj   +1 more source

Higher NO3−‐N Levels Under Mulberry (Morus alba L.) Planting Enhanced CAZyme Abundance, Increasing Soil Carbon Stability

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Afforestation is widely advocated for boosting carbon (C) sequestration. However, the stability of soil C pools in economically and culturally significant mulberry plantations remains poorly understood. The soil organic C (SOC) contents in different aggregates and the oxidizable OC fractions were measured.
Zi Yang   +8 more
wiley   +1 more source

Refining techniques for high‐frequency monitoring of chlorophyll a fluorescence in estuarine systems

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Concentrations of the photosynthetic pigment chlorophyll a are commonly used as a proxy for phytoplankton biomass in aquatic systems. Traditional methods for extracting chlorophyll a in discrete samples limit measurement frequency, while in situ sensor technology provides high frequency chlorophyll a fluorescence measurements at a more ...
Nicole Dix   +10 more
wiley   +1 more source

A simplified two‐station approach for modeling metabolism in dam tailwaters subject to diel flow variation

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Tailwaters are ubiquitous and highly managed ecosystems whose food webs often rely disproportionately on autochthonous energy. In situ continuous dissolved oxygen data are increasingly being used to estimate gross primary productivity and ecosystem respiration in rivers, but this approach is complicated in tailwaters, where upriver ...
Ian W. Bishop   +5 more
wiley   +1 more source

Effects of preservatives and poisons on the elemental and isotopic composition of freshwater particulate organic matter

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Sediment traps, often used in tandem with preservatives or poisons, are widely used for the collection of particulate organic matter (POM), providing insight into the source to sink mechanisms that shape major biogeochemical cycles and sedimentary carbon sequestration.
Diana Velazquez   +2 more
wiley   +1 more source

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