Results 111 to 120 of about 2,176,824 (385)

Time dependent FTIR spectra of mineral waters after contact with air [PDF]

open access: yesarXiv, 2010
FTIR spectra of mineral waters of Slavyanovskaya, Aqua Montana, Bad Harzburger and Christinen with time from first contact of water with open air were analysed. The kinetic of spectral changes of Slavyanovskaya mineral water in the regions of stretch, deformation and intermolecular vibrations was measured.
arxiv  

Shape‐Stabilization of Phase Change Materials with Carbon‐Conscious Poly(hydroxy)Urethane Foams

open access: yesAdvanced Functional Materials, EarlyView.
Poly(hydroxy)urethane (PHU) foam, derivable from carbon dioxide (CO2) and bio‐based resources, is a promising material platform for shape‐stabilizing phase change materials (PCMs). We demonstrate the encapsulation of both paraffins and calcium chloride hexahydrate in PHU foam, achieving 48 stable thermal cycles by introducing 5 wt.% barium carbonate ...
Minjung Lee   +5 more
wiley   +1 more source

Exigência de cálcio para codornas japonesas (Coturnix coturnix japonica) machos na fase de 1 a 21 dias de idade Calcium requirement for male japanese quails (Coturnix coturnix japonica) from 1 to 21 days of age

open access: yesCiência e Agrotecnologia, 2011
Objetivou-se, com esta pesquisa, determinar a exigência de cálcio de codornas japonesas machos, no período de 1 a 21 dias de idade. Foram utilizadas 280 codornas com peso médio de 8 ± 2 g na fase inicial. As variáveis estudadas foram consumo de ração (CR)
Fernando Guilherme Perazzo Costa   +5 more
doaj   +1 more source

Reformulating the Kriging Algorithm to the Practicing Miner [PDF]

open access: yesarXiv, 2013
The main aim of applied geostatistics is to derive `mean' and `variance' of ore to the practicing miner. This paper suggests brand-new approach to the problem.
arxiv  

Ex-situ mineral carbonation: resources, process and environmental assessment (Carmex project) [PDF]

open access: yes, 2013
This article presents the main results of the Carmex project (2009-2012), whose purpose was to review the feasibility of ex-situ mineral carbonation in terms of resource availability, performance of the aqueous mineral carbonation process and life cycle ...
Augé, Thierry   +10 more
core  

Oxygen Doping Enables Tailored Built‐In Electric Fields in FeOCl/g‐C3N4 Heterojunctions for Enhanced Peroxymonosulfate Activation

open access: yesAdvanced Functional Materials, EarlyView.
Oxygen‐doping modulated g‐C3N4 support enables a strong built‐in electric field (BIEF) in FeOCl‐OCN.This enhanced BIEF induces the rearrangement of Fe(II)/Fe(III) in FeOCl, which subtly improves intermediates adsorption and also reduces the energy barrier of *O production, thereby achieving efficient PMS activation with 1O2 and Fe(IV)= O as the primary
Ying Zeng   +9 more
wiley   +1 more source

Disponibilidade aparente do fósforo em alimentos vegetais e suplementação da enzima fitase para tilápia-do-nilo Apparent phosphorus availability in vegetable feedstuffs and supplementation of phytase enzyme for Nile tilapia Oreochromis niloticus

open access: yesRevista Brasileira de Zootecnia, 2007
Este estudo foi realizado com o objetivo de avaliar o efeito da fitase (0, 1.000 e 2.000 uf/kg) na disponibilidade aparente de P de cinco alimentos energéticos (milho, milho extrusado, farelo de trigo, farelo de arroz e sorgo baixo tanino) e cinco ...
Giovani Sampaio Gonçalves   +3 more
doaj   +1 more source

Responses of ectomycorrhizal fungi to mineral substrates [PDF]

open access: yes, 2003
Boreal forest soils are complex, heterogeneous growth substrates where organic and mineral components provide nutrient resources for soil organisms and plants. Mineral nutrients are cycled between living and dead organic components of the forest soil and
Rosling, Anna
core  

A Strong and Water‐Retaining Biomass Adhesive Inspired by Tofu

open access: yesAdvanced Functional Materials, EarlyView.
Drawing inspiration from the formation mechanism of the traditional food tofu, a strong and water‐retaining adhesive is designed using the soybean meal (SM) oxidized by glucose oxidase (GOx) and calcium sulfate oligomer (CSO). This design strategy effectively addresses the conflicting requirements of water‐resistant bonding strength and water retention
Jiawei Shao   +8 more
wiley   +1 more source

Assessing Ageing Condition of Mineral Oil-Paper Insulation by Polarization/Depolarization Current

open access: yes, 2011
Accurately assessing the ageing status of oil-paper insulation in transformer is essential and important. Polarization and Depolarization Current (PDC) technique is effective in assessing the condition of oil-paper insulation system.
Chen, G, Hao, J, Liao, R, Ma, Z, Yang, L
core  

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