Results 141 to 150 of about 284,257 (387)

Williams-Beuren Syndrome: A Case Report

Cumhuriyet Dental Journal, 2019
Williams syndrome is a rare neurodevelopmental disorder caused by the spontaneous deletion of genetic material from the region q11.23 of one member of the pair of chromosome 7, so that the person is hemizygous for those genes.
Seren Kaya, Kaan Orhan, Firdevs Tulga Öz   +2 more
doaj   +1 more source

Characterization of the Volatile Compounds of the Hardwood Portion of Betula papyrifera Marshall From Quebec, Canada

Chemistry &Biodiversity, EarlyView.
The volatile profile of Betula papyrifera hardwood has been characterized using both hydrodistillation and HS‐SPME coupled with GC‐MS/FID. Hydrodistillation yields a fatty acid‐rich essential oil, while HS‐SPME reveals a broader range of low‐molecular‐weight volatiles, including aromatics and terpenoids.
David Fortier, Jean‐Christophe Séguin, Normand Voyer   +2 more
wiley   +1 more source

Green Extraction and Fractionation of Chestnut Wood Waste: A Sustainable Pathway to Biopolymers and Antimicrobial Solutions

ChemSusChem, EarlyView.
A sustainable valorization of chestnut wood waste is proposed through microwave‐assisted subcritical water extraction, optimized via central composite design. The extract is fractionated by membrane filtration and resin purification, enabling water recovery (up to 89%) and obtaining a tannin‐rich fraction, used to synthesize a PVA‐based biopolymer ...
Clelia Aimone, Giorgio Capaldi, Salah Chaji, Emanuela Calcio Gaudino, Anastasia Anceschi, Alessia Patrucco, Silvia Bonetta, Manuela Macrì, Giorgio Grillo, Giancarlo Cravotto   +9 more
wiley   +1 more source

Changes in the Diversity of Evergreen and Deciduous Species During Natural Recovery Following Clear-Cutting in a Subtropical Evergreen-Deciduous Broadleaved Mixed Forest of Central China

, 2015
Clear-cutting has been a widespread commercial logging practice, causing substantial changes of biodiversity in many forests throughout the world. Forest recovery is a complex ecological process, and examining the recovery process after clear-cutting is ...
Yongtao Huang, Xunru Ai, L. Yao, R. Zang, Yi Ding, Jihong Huang, Guang Feng, Juncheng Liu   +7 more
semanticscholar   +1 more source

Relative growth rate variation of evergreen and deciduous savanna tree species is driven by different traits.

Annals of Botany, 2014
BACKGROUND AND AIMS Plant relative growth rate (RGR) depends on biomass allocation to leaves (leaf mass fraction, LMF), efficient construction of leaf surface area (specific leaf area, SLA) and biomass growth per unit leaf area (net assimilation rate ...
K. Tomlinson, L. Poorter, F. Bongers, F. Borghetti, Loes Jacobs, F. van Langevelde   +5 more
semanticscholar   +1 more source

Scalogram habitat measures as predictors of bird abundance

Ecography, EarlyView.
Birds select habitat characteristics, such as variability in habitat structure, across multiple spatial scales (grain and extent). Measuring habitat variability at multiple scales can better capture factors that influence avifauna communities than focusing on one scale only. One valuable tool in assessing habitat heterogeneity is the cumulative dynamic
Eduarda Silveira, Akash Anand, Anna M. Pidgeon, Eric Wood, Ryan E. Buron, Avi Bar‐Massada, Laura Farwell, Benjamin Zuckerberg, Volker C. Radeloff   +8 more
wiley   +1 more source

The division of food space among mammalian species on biomes

Ecography, EarlyView.
Understanding how species' ecological partitioning functions across biomes is fundamental to macroecology and conservation biology. Here, we examine the global distribution of dietary strategies in terrestrial mammals, focusing on how biome specialization modulates trophic diversity and structure at a broad geographical scale.
Sara Gamboa, Sofía Galván, Mar Sobral, Manuel Hernández Fernández, Sara Varela   +4 more
wiley   +1 more source

Extreme winter warm event causes exceptionally early bud break for many woody species

Ecosphere, 2019
In many ecosystems, climate is changing faster during winter compared to other seasons. However, we lack basic information about the responses of many species to winter climate change, including extreme warm events.
Laura M. Ladwig, Jennifer L. Chandler, Peter W. Guiden, Jonathan J. Henn   +3 more
doaj   +1 more source

Soil respiration in a northeastern US temperate forest: a 22‐year synthesis [PDF]

, 2013
To better understand how forest management, phenology, vegetation type, and actual and simulated climatic change affect seasonal and inter‐annual variations in soil respiration (Rs), we analyzed more than 100,000 individual measurements of soil ...
Bowden, R. D., Crill, Patrick M., Davidson, Erik A., Drake, J. E., Ellison, A. M., Finzi, A. C., Foster, D. R., Frey, Serita D., Giasson, M. A., Hadley, J. L., Lavine, M., Melillo, J. M., Munger, J. W., Nadelhoffer, K. J., Nicoll, L., Ollinger, Scott V., Savage, K. E., Steudler, P. A., Tang, J., Varner, Ruth K., Wofsy, S. C.   +20 more
core   +1 more source

Wild bees and landcover: bee species' body size does not predict the scale of effect, but bee phenology predicts association with landcover type

Ecography, EarlyView.
Habitat is a key aspect of any species' niche and can affect populations at multiple spatial scales. Basic ecology and effective conservation thus require an understanding of which habitats matter and at what scales. Yet, habitat studies are rarely scale‐optimized, and what determines the scale(s) at which populations are affected by surrounding ...
Dylan T. Simpson, Colleen Smith, Rachael Winfree   +2 more
wiley   +1 more source