Results 1 to 10 of about 63,472 (218)

Addressing biodiversity knowledge shortfalls in New World Helicopsychidae (Insecta, Trichoptera): Potential distribution, environmental gradients, and identification of conservation and research priority areas. [PDF]

open access: yesPLoS ONE
This study provides an integrative analysis of Helicopsychidae biodiversity in the New World (NW), examining their distribution patterns, environmental gradients, biodiversity hotspots, and biodiversity knowledge shortfalls. We estimated species richness,
Rafael Pereira, Adolfo Calor
doaj   +3 more sources

Modelamiento e implementación de una planta térmica

open access: yesVisión Electrónica, 2021
En este artículo se presenta el modelamiento matemático e implementación de una planta térmica. Para ello, se deducen las ecuaciones de un sistema térmico a través de la relación de calor aplicado para incrementar la temperatura, y la cantidad de calor ...
Jairo Humberto Fresneda-Alarcón   +3 more
doaj   +1 more source

Assessment of AlZnMgCu alloy powder modification for crack-free laser powder bed fusion by differential fast scanning calorimetry

open access: yesMaterials & Design, 2021
Additive manufacturing, e.g. by laser powder bed fusion (LPBF), is very attractive for lightweight constructions, as complex and stress-optimised structures integrating multiple functions can be produced within one process.
Evgeny Zhuravlev   +9 more
doaj   +1 more source

Evolutionary and environmental determinants of heat tolerance and acclimation capacity in herpetofauna. [PDF]

open access: yesConserv Biol
Abstract Exploring heat tolerance and acclimation capacity can provide an effective approach to evaluating species’ sensitivity to extremely high temperatures due to climate warming. Despite some work on amphibian and reptile thermophysiological adaptation, related questions remain. We reviewed the literature to provide a synthesis of worldwide data on
Sun Z   +8 more
europepmc   +2 more sources

Caloric Catastrophe

open access: yesBiophysical Journal, 1973
Six solutes known to be actively transported by bacteria were studied with the cell in a "minimum energy" state to determine if sufficient energy were available from cellular stores of ATP to supply the energy necessary to run postulated membrane-situated "pumps." Steady-state cellular concentrations of potassium, calcium, magnesium, leucine, glycine ...
Minkoff, Lawrence, Damadian, Raymond
openaire   +3 more sources

Estrous behavior, ovulatory follicle dynamics, and corpus luteum size in Creole cows after spontaneous or prostaglandin F2α-induced estrous

open access: yesRevista Colombiana de Ciencias Pecuarias, 2015
Background: evaluation of reproductive behavior in Creole cows is important to determine several parameters, such as fertility, that show the physiologic reproductive mechanisms under different conditions.
Andrés Quezada-Casasola   +4 more
doaj   +1 more source

Pengembangan Video Pembelajaran Kalor untuk Siswa Kelas VII

open access: yesJurnal Inovasi dan Teknologi Pembelajaran, 2019
Abstrak: Tujuan dari pengembangan yaitu menghasilkan produk media video pembelajaran yang valid sebagai sumber belajar yang efektif dalam mata pelajaran IPA materi pokok Kalor kelas VII C.  Penelitian ini menggunakan model pengembangan Sadiman.
Ardiyanti Ulyana   +2 more
doaj   +1 more source

Estresse Térmico – os efeitos do calor sobre o desempenho físico

open access: yesRevista de Educação Física, 2018
Introdução: A temperatura global vem aumentando ao longo dos anos. Paralelo a isto, vem aumentando cada vez mais o número de praticantes em atividades outdoor.
Danielli Braga de Mello
doaj   +1 more source

Diseño de un reactor de tornillos para la obtención de bioaceite a partir de pirólisis rápida de biomasa residual

open access: yesInvestigación e Innovación en Ingenierías, 2021
Objetivo: realizar el diseño mecánico de un reactor de tornillo para la obtención de bioaceite mediante pirólisis rápida de biomasa residual. Metodología: para seleccionar el reactor más adecuado se aplicó la metodología del Despliegue de la Función ...
Jesus Pardo Salazar   +2 more
doaj   +1 more source

Caloric restriction in humans [PDF]

open access: yesExperimental Gerontology, 2007
Studies on mice and rats have demonstrated that calorie restriction (CR) slows primary aging, has a protective effect against secondary aging, and markedly decreases the incidence of malignancies. However, the only way to determine whether CR "works" in humans is to conduct studies on people. Such studies are difficult to perform in free-living people.
Holloszy JO, FONTANA, Luigi
openaire   +4 more sources

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