Results 61 to 70 of about 115,189 (308)

Assessing the viability of genebanked seeds from rare, wild plants native to the United States using the D.E.A.D. paradigm

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Genebanks must maintain viable seeds for decades. Seeds that germinate are clearly alive, but some seeds, often from wild populations, do not germinate because they are dormant, empty, aged, or damaged (D.E.A.D.). This work evaluates the effects of D.E.A.D.
Christina Walters   +33 more
wiley   +1 more source

CHARACTERIZATION OF EMISSIONS OF THERMALLY MODIFIED WOOD AND THEIR REDUCTION BY CHEMICAL TREATMENT

open access: yesBioResources, 2008
Thermal treatment is a suitable method for improving the quality of wood types like spruce, beech or poplar, and thus to open up new fields of application that used to be limited to tropical woods or woods treated with timber preservatives.
Jana Peters   +2 more
doaj  

BioTIME: A database of biodiversity time series for the Anthropocene. [PDF]

open access: yes, 2018
MotivationThe BioTIME database contains raw data on species identities and abundances in ecological assemblages through time. These data enable users to calculate temporal trends in biodiversity within and amongst assemblages using a broad range of ...
Adam, Dušan   +100 more
core   +1 more source

Are there morpho‐acoustic patterns of adaptation in nonhuman primate ears? Testing the role of ecology and habitat in shaping ear morphology and function

open access: yesThe Anatomical Record, EarlyView.
Abstract Analysis of the variation in the bony structures of the inner and middle ear provides critical insights into functional morphology, as well as adaptive morphology across primates. In this study, we investigated whether ear morphology patterns are related to the ecological characteristics of species and their habitats to test two acoustic ...
Myriam Marsot   +4 more
wiley   +1 more source

Sorption behavior of four tropical woods using a dynamic vapor sorption standard analysis system

open access: yesMaderas: Ciencia y Tecnología, 2016
Sorption behavior of four tropical woods coming from Cameroon is studied using a Dynamic Vapor Sorption-Intrinsic apparatus. Sorption isotherms at 20°C and 40°C of Triplochiton scleroxylon (obeche), Entandrophragma cylindricum (sapele), Sterculia ...
Merlin Simo-Tagne   +4 more
doaj  

Properties of common tropical hardwoods for fretboard of string instruments

open access: yesJournal of Wood Science, 2020
Fretboards of string instruments are usually made of rare woods that commonly have a high density, strength, and hardness; further, they are wear resistant, uniform in texture, and feature an elegant color.
Meihong Liu   +3 more
doaj   +1 more source

MEASURMENT OF BENDING PROPERTIES OF RHIZOPHORA TROPICAL WOOD

open access: yesASEAN Journal on Science and Technology for Development, 2017
The Young’s modulus, load at the yield point and proportional limit stress from the compression bending (cb) test were compared with the four point bending tests (4pb). The theoretical Young’s modulus are larger than the real reading for 5mm and 10mm thick specimens, except for 200mm long specimens due to specimen nonlinearity. The experimental results
Sinin Hamdan, Mahbub Hasan, Yoann Nohe
openaire   +3 more sources

Acoustic Properties of Selected Tropical Wood Species [PDF]

open access: yesJournal of Nondestructive Evaluation, 2010
Acoustic properties such as specific dynamic Young’s modulus (E′/γ), internal friction (Q −1) and acoustic conversion efficiency (ACE) of wood are important properties frequently examined by researchers. Vibration technique is one of the non-destructive evaluation techniques used as an alternative method for measuring the ...
Sedik, Yahya   +3 more
openaire   +1 more source

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto   +3 more
wiley   +1 more source

A reverse chemical ecology approach to explore wood natural durability [PDF]

open access: yes, 2020
The natural durability of wood species, defined as their inherent resistance to wood‐destroying agents, is a complex phenomenon depending on many biotic and abiotic factors.
Beauchène J.   +11 more
core   +3 more sources

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