Results 61 to 70 of about 104,421 (228)

Modal performance degradation of naturally aged NBR

Polymer Testing, 2022
Damping is often an invisible requirement for a good mechanical design. To render the long-term service of viscoelastic dampers, it is essential for design engineers to estimate the degradation of the damping characteristics with age.
Syam Prasad Ammineni, Ch. Nagaraju, D. Linga Raju   +2 more
doaj   +1 more source

Efeito da pré-molhagem do agregado nas propriedades das argamassas com agregado reciclado deconcreto e agregado leve [PDF]

, 2019
This paper examines the suitability of partially replacing natural aggregate, sand, (NA) with recycled concrete aggregate (RCA) or lightweight aggregate (LWA) in mortars, under the hypothesis that pre-wetting aggregates would produce improvement in ...
Aponte Hernández, Diego Fernando, Barra Bizinotto, Marilda, Cavalcante Rocha, Janaíde, Jochem, Lidiane Fernanda   +3 more
core   +4 more sources

Polymer‐Crosslinking System‐Filler Interactions in Polychloroprene Adhesives: Experimental and Molecular Modeling Insights

Journal of Applied Polymer Science, EarlyView.
The use of polychloroprene is common in elastomeric adhesives. This study highlights the possible substitution of zinc oxide curing systems to a less hazardous metal complex, also evaluating the changes that higher surface area fillers can bring to the adhesive.
Gabriel Bachega Rosa, Sandra Aparecida Coelho Mello, Lucas Sousa Madureira, Silvana Navarro Cassu   +3 more
wiley   +1 more source

Geochemical-geophysical investigations, Fairbanks district [PDF]

, 1967
Trace element distribution in a subarctic valley in the Cleary Hill area of the Fairbanks gold district has been studied. Zinc and arsenic have been found excellent pathfinder elements for auriferous deposits. Methods of analysis for copper, lead, zinc,
Beistline, E.H., Heiner, L.E., Loperfido, J.C., Moody, D.W., Peterson, R.J., Thomas, B.I., Wallis, J.E., Wolff, E.N.   +7 more
core  

Surfactant‐Enhanced Electrospun Nanofiber Filters for Efficient Viral and Bacterial Inactivation

Journal of Applied Polymer Science, EarlyView.
In this work, electrospun polyacrylonitrile (PAN) nanofibrous filters functionalized with surfactants (CTAB, CPC, and SDS) were developed for air filtration applications. The PAN nanofiber mats enable efficient particulate matter capture while simultaneously providing antimicrobial and antiviral activity against bacteria (E. coli and S.
Edilton N. da Silva, Paulo A. M. Chagas, Gustavo C. da Mata, Felipe A. Lima, Fabiana B. Furtado, Wanderley P. de Oliveira, Rejane M. T. Grotto, Clovis W. O. de Souza, Mônica L. Aguiar, Vádila G. Guerra   +9 more
wiley   +1 more source

The influence of rivers on seabird foraging ecology

Biological Reviews, EarlyView.
ABSTRACT Rivers act as vital arteries to the world's oceans, delivering fresh water and nutrients that sustain marine ecosystems. Globally, river flow increasingly is being altered by climate change and anthropogenic pressures; yet the significance of rivers to predatory marine species, such as seabirds, and the extent to which river‐related changes ...
Julia B. Morais, Andre Chiaradia, Richard D. Reina   +2 more
wiley   +1 more source

Preparation and properties of super hydrophilic material based on ethylene-vinyl acetate copolymer/nitrile rubber thermoplastic vulcanizate

Hecheng xiangjiao gongye, 2022
Thermoplastic vulcanizate based on ethylene-vinyl acetate copolymer/nitrile rubber (EVA/NBR TPV) was prepared by dynamic vulca-nization method, the effect of the mass ratio of rubber to plastic on the superhydrophilic behavior of EVA/NBR TPV surface was ...
ZHANG Wei-ran, FENG Ruo-tao, YANG Lin-ji, WANG Zhao-bo
doaj   +1 more source

Feasibility Study and Optimal Placement of Solar Power Plants Using Binary Genetic Algorithm

Energy Science &Engineering, EarlyView.
This study introduces an integrated optimization framework using a binary genetic algorithm (BGA) for optimal siting and sizing of two solar plants (865 and 739 kWp) in Karaj, Iran. The BGA outperformed conventional methods, achieving a 24.3% reduction in power losses and enhanced voltage stability.
Mehrab Shahbazi, Reza Eslami
wiley   +1 more source

Negative BOLD in the Lateral Geniculate Nucleus: Neuronal Implications and Cortico-Thalamic Feedback

i-Perception, 2011
Previous research has demonstrated a sustained negative BOLD response (NBR) that is negatively correlated with the spatio-temporal properties of a visual stimulus. Whilst it has been suggested that the NBR surrounding the positive BOLD response (PBR) may
M. Uesaki, A. Morland, A. Gouws, M. Hymers, I. Alvares, M. Aslet, J. Bird, R. Dearden, S. Maslanka, H. Ashida   +9 more
doaj   +1 more source

Selection of elastomeric membranes for the removal of volatile organics from water [PDF]

, 1993
A wide range of homogeneous elastomeric membranes has been prepared using dicumylperoxide as a general cross-linking agent. The membranes have been used for both equilibrium sorption measurements and steady-state pervaporation experiments to study ...
Mulder, M.H.V., Nijhuis, H.H., Nijhuis, H.H., Smolders, C.A., Smolders, C.A.   +4 more
core   +2 more sources