Results 21 to 30 of about 206,840 (257)

Silicate determination in sea water: toward a reagentless electrochemical method [PDF]

open access: yes, 2007
ilicate has been determined in sea water by four different electrochemical methods based on the detection of the silicomolybdic complex formed in acidic media by the reaction between silicate and molybdenum salts.
Comtat, Maurice   +7 more
core   +1 more source

Changes of Periphyton Abundance and Biomass Driven by Factors Specific to Flooding Inflow in a River Inlet Area in Erhai Lake, China

open access: yesFrontiers in Environmental Science, 2021
Periphyton is an ecological essential in freshwater lakes and rivers. Its abundance and biomass are very dynamic in various habitats and subject to various factors, for example, nutrient and light.
Wenjing Ren   +15 more
doaj   +1 more source

Some Agronomical Practices for Improving Growth ,Yield and Quality of Pea Growing at Late Seasons. بعض الممارسات الزراعية لتحسين النمو والمحصول والجودة للبسلة المنزرعة في العروات المتأخرة [PDF]

open access: yesJournal of Plant Production, 2020
This work was  carried out at the Experimental Farm of  El-Baramoon Research Station, Horticulture Research Institute, Agricultural Research Center, during the late winter  season of 2018 and 2019 to study the effect of two sowing dates (20th January ...
E. Tartoura   +3 more
doaj   +1 more source

Structure development in silicate-layered polymer nanocomposites [PDF]

open access: yes, 2002
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The demands made of materials have resulted in the formation of complex composite structures; one such example of these is nanocomposites.
Lander, J., Lander, Julie-Anne
core   +5 more sources

Flat, broadband supercontinuum generation at low pulse energies in a dispersion-tailored lead-silicate fibre

open access: yes, 2011
We report flat, broadband supercontinuum generation at low pump pulse energies (69pJ 740fs pulses at 1540nm) in a lead-silicate fibre providing a unique combination of high nonlinearity (820W-1km-1) and a flat near-zero dispersion ...
Horak, P.   +13 more
core   +2 more sources

Determination of silicate liquid thermal expansivity using dilatometry and calorimetry [PDF]

open access: yes, 1992
A method for the determination of relaxed silicate liquid molar volume and expansivity at temperatures just above the glass transition is discussed. The method involves the comparison of heat capacity and molar expansivity in the glass transition region.
Knoche, Ruth   +2 more
core   +1 more source

PREPARATION AND INVESTIGATION OF METALLIC SILVER NANOPARTICLES BY ANODIC OXIDATION [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2013
The article provides the results of the electrochemical preparation of metallic silver nanoparticles. The process was carried out in distilled water using silver electrodes.
A.V. Shmigel   +3 more
doaj  

ELECTROCHEMICAL PRODUCTION OF NANOSTRUCTURED MATERIALS BASED ON NICKEL [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2013
The report given the results of the preparation of nanoparticles of nickel hydroxide by an electrochemical method, in distilled water and potassium hydroxide, using nickel electrodes. The novelty of the work lies in systematic studying of the preparation
A.V. Shmigel   +3 more
doaj  

Quantitative study of hydration of C3S and C2S by thermal analysis. Evolution and composition of C-S-H gels formed [PDF]

open access: yes, 2010
This research is part of a European project (namely, CODICE project), main objective of which is modelling, at a multi-scale, the evolution of the mechanical performance of non-degraded and degraded cementitious matrices.
Baroni, Fulvio   +21 more
core   +1 more source

NMR studies of silicate and aluminosilicate solutions as precursors for zeolites [PDF]

open access: yes, 1996
The search for a detailed understanding of the mechanism of zeolite synthesis has, over the past two decades, promoted many investigations into the species present in (alumino)silicate solutions.
Maybodi, Abdolraouf Samadi
core  

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