Results 31 to 40 of about 2,176,824 (385)

Exigência de fósforo disponível para tilápia-do-nilo (35 a 100 g) Available phosphorus requirement of Nile tilapia (35 to 100 g)

open access: yesRevista Brasileira de Zootecnia, 2008
Objetivou-se determinar a exigência de fósforo disponível para tilápias-do-nilo. Utilizaram-se 144 peixes com peso vivo inicial de 35,33 ± 0,66 g, distribuídos em delineamento de blocos ao acaso, com quatro tratamentos e três repetições. Foram fornecidas
Wilson Massamitu Furuya   +5 more
doaj   +1 more source

Analisis Mineral Tanah Rawan Longsor Menggunakan X-Ray Diffraction Di Desa Sawaru Kabupaten Maros

open access: yesJambura Geoscience Review, 2020
The study of soil minerals structure has been conducted in the Sawaru village, Maros regency, South Sulawesi which is locally known to be the landslides-prone area.
Rahmaniah Rahmaniah   +3 more
doaj   +1 more source

Hydrothermal Microflow Technology as a Research Tool for Origin-of-Life Studies in Extreme Earth Environments

open access: yesLife, 2017
Although studies about the origin of life are a frontier in science and a number of effective approaches have been developed, drawbacks still exist. Examples include: (1) simulation of chemical evolution experiments (which were demonstrated for the first
Kunio Kawamura
doaj   +1 more source

Reservoir theory for studying the geochemical evolution of soils [PDF]

open access: yes, 2010
[1] Linking mineral weathering rates measured in the laboratory to those measured at the landscape scale is problematic. In laboratory studies, collections of minerals are exposed to the same weathering environment over a fixed amount of time. In natural
Almond   +58 more
core   +1 more source

Radon concentration in self-bottled mineral spring waters as a possible public health issue [PDF]

open access: yes, 2019
Since 2013, the Council Directive 2013/51/Euratom has been regulating the content of radioactive substances in water intended for human consumption. However, mineral waters are exempted from this regulation, including self-bottled springs waters, where ...
Ampollini, M.   +10 more
core   +1 more source

Selfish Mining in Proof-of-Work Blockchain with Multiple Miners: An Empirical Evaluation [PDF]

open access: yes, 2019
Proof-of-Work blockchain, despite its numerous benefits, is still not an entirely secure technology due to the existence of Selfish Mining (SM) strategies that can disrupt the system and its mining economy. While the effect of SM has been studied mostly in a two-miners scenario, it has not been investigated in a more practical context where there are ...
arxiv   +1 more source

A Collaboration Strategy in the Mining Pool for Proof-of-Neural-Architecture Consensus [PDF]

open access: yesarXiv, 2022
In most popular public accessible cryptocurrency systems, the mining pool plays a key role because mining cryptocurrency with the mining pool turns the non-profitable situation into profitable for individual miners. In many recent novel blockchain consensuses, the deep learning training procedure becomes the task for miners to prove their workload ...
arxiv  

Guidelines for the Diagnosis and Treatment of Primary Osteoporosis (2022) [PDF]

open access: yesZhongguo quanke yixue, 2023
Chinese Society of Osteoporosis and Bone Mineral Research
doaj   +1 more source

Níveis nutricionais de cobre para frangos de corte machos e fêmeas na fase inicial Copper nutritional levels for male and female broilers in the initial phases

open access: yesRevista Brasileira de Zootecnia, 2005
Com o objetivo de determinar a exigência de cobre (Cu) para frangos de corte na fase inicial (8 - 21 dias), foram utilizadas 384 aves, metade machos e metade fêmeas. Foi elaborada uma dieta basal atendendo às exigências nutricionais das aves, com exceção
Marlene Schmidt   +4 more
doaj   +1 more source

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