Results 51 to 60 of about 17,367 (238)

Deposition and transport of functionalized carbon nanotubes in water-saturated sand columns [PDF]

, 2012
Knowledge of the fate and transport of functionalized carbon nanotubes (CNTs) in porous media is crucial to understand their environmental impacts. In this study, laboratory column and modeling experiments were conducted to mechanistically compare the ...
Carpena, Rafael Munoz, Gao, Bin, Huang, Qingguo, Morales, Veronica L., Tian, Yuan, Wang, Yu, Yang, Liuyan   +6 more
core   +3 more sources

Waste activated sludge high‐rate treatment of septage: Biodegradability studies and contact phase trials towards a cleaner environment

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The waste activated sludge high‐rate (WASHR) process, developed in our previous study, is used for septic wastewater treatment. This high‐rate contact stabilization pre‐treatment uses typical waste streams found in wastewater treatment plants to reduce a portion of the loadings on the main treatment trains.
Arman Shirali, Melody Blythe Johnson, Mehrab Mehrvar   +2 more
wiley   +1 more source

Carbon monoxide adsorption on NaY zeolite and impregnated with 5% niobium: Characteristics and fixed‐bed study

The Canadian Journal of Chemical Engineering, EarlyView.
Schematic of the CO adsorption process in a fixed‐bed column containing pure NaY zeolite and Nb‐modified NaY (NaY–5%Nb). On the left, breakthrough curves and temperature profiles highlight the dynamic performance and thermal effects during CO adsorption.
Elson Oliveira, Karina Querne de Carvalho, Erika Pereira Felix, Roberta C. P. Rizzo‐Domingues   +3 more
wiley   +1 more source

A critical study of the role of the surface oxide layer in titanium bonding [PDF]

Scanning electron microscope/X-ray photoelectron spectroscopy (SEM/XPS) analysis of fractured adhesively bonded Ti 6-4 samples is discussed. The text adhesives incuded NR 056X polyimide, polypheylquinoxaline (PPQ), and LARC-13 polyimide.
Dias, S., Wightman, J. P.
core   +4 more sources

Reliability of Acid-Insoluble Ashes and Undigestible Neutral Detergent Fibre as Internal Markers for Estimation of Digestibility in Beef Cattle Fed High-Concentrate Diets

Agriculture
Digestibility, together with intake, is the main factor affecting animal productivity. It can be assessed in vivo by measuring total feed intake and faecal output (time-consuming and labour-intensive) or with the aid of substances known as markers ...
Amira Arbaoui, Antonio de Vega
doaj   +1 more source

In Vivo and In Vitro Evaluation of PTeCA (1H‐Pyrrole‐2,3,4,5‐Tetracarboxylic Acid) in Hair Matrix as a Marker for Oxidative Cosmetic Treatment

Drug Testing and Analysis, EarlyView.
A total of 3378 self‐reported treated and untreated hair samples were analyzed for PTCA and PTeCA by LC‐MS/MS. Moreover, their in vitro formation was assessed in 225 untreated hair by different cosmetic treatments with and without oxidative agents. Data suggest that PTeCA could be a reliable marker for oxidative cosmetic treatments in hair.
Sara Casati, Alessandro Ravelli, Roberta F. Bergamaschi, Agata Magliocco, Sofia Vanerio, Gabriella Roda, Paola Rota, Marica Orioli, Alessio Battistini   +8 more
wiley   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Synergistic Integration of Electronic Structure Modulating and Hierarchical Mass Transport Channels in Wood‐Derived Electrocatalysts for Efficient Oxygen Evolution

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
By combining electronic structure modulation and hierarchical channel construction, a wood‐derived Cr‐Co2P@PNC/PCW electrocatalyst is developed. This multicomponent synergistic modulation strategy significantly improves the efficiency of OER. Designing synergistic regulation strategies is widely recognized as an effective approach to enhancing ...
Zihan Zhang, Weizhe Yuan, Sha Chen, Cheng Zhou, Xinmin Zhang, Xiaowei Wang, Han Xu, Yan Qing, Yiqiang Wu   +8 more
wiley   +1 more source

Use of markers to determine the ileal digestibility of amino acids for swine Uso de indicadores para determinar a digestibilidade ileal de aminoácidos para suínos

Ciência e Agrotecnologia, 2013
Many markers can be used in digestibility assays for swine, but needs to be evaluated before its use. An assay was carried out with the objective of measuring the coefficients of ileal apparent (CIAD) and standardized digestibility (CISD) of amino acids ...
Paulo Cesar Pozza, Paulo Cezar Gomes, Magali Soares Santos Pozza, Ricardo Vianna Nunes, Rony Antônio Ferreira, Ramalho José Barbosa Rodrigueiro   +5 more
doaj  

Comparative Experimental Efficiency of Solar Water Heating Systems With Enhanced Thermal Performance: A Review

Energy Science &Engineering, EarlyView.
This review presents a comparative analysis of experimental studies aimed at improving the thermal efficiency of solar water heating (SWH) systems. Various enhancement techniques, including nanofluids, phase change materials, optimized collector designs, and hybrid photovoltaic–thermal systems, are evaluated based on their impact on system performance ...
Oluwaseyi O. Alabi, Oluwatoyin J. Gbadeyan, Oludolapo A. Olanrewaju   +2 more
wiley   +1 more source