Results 41 to 50 of about 1,190 (203)

Characterization of different oil soapstocks and their application in the lipase production by Aspergillus niger under solid state fermentation. [PDF]

, 2016
Lipases are enzymes that catalyze the hydrolysis of the ester linkage in a triacylglycerol oil-water interface, while in non-aqueous environments they catalyze reverse reactions (esterification, transesterification and interesterification).
ANTONIASSI, R., DAMASO, M. C. T., MURUCI, L. N. M., SANTOS, L. O., SANTOS, R. dos S., SILVA, J. P. L. da   +5 more
core   +1 more source

Characterization and Beneficiation of Indigenous Marble Waste to Remove Siliceous and Ferrous Impurities

Asia-Pacific Journal of Chemical Engineering, Volume 20, Issue 6, November/December 2025.
ABSTRACT In this study, marble waste (MARWAS) beneficiation was done using thermal, physical, and chemical means. The MARWAS samples collected from dumping yards of Kishangarh and Revdar districts of Rajasthan (India) and Ambaji district of Gujarat (India) were characterized by chemical composition analysis, scanning electron microscopy with energy ...
Vinod Kumar Dhakad, Susanta Kumar Jana
wiley   +1 more source

Cobalt@Silica Core‐Shell Catalysts for Hydrogenation of CO/CO2 Mixtures to Methane

ChemCatChem, Volume 11, Issue 19, Page 4884-4893, October 7, 2019., 2019
Confined: The beneficial effect of a confined reaction locus for the COx methanation is demonstrated by comparing a cobalt containing core‐shell catalyst‐ Co@mSiO2‐with a supported Co/mSiO2 reference catalyst possessing the same Co particle size distribution as well as surface chemistry as the core‐shell catalyst.
Jan Ilsemann, Angela Straß‐Eifert, Jens Friedland, Lars Kiewidt, Jorg Thöming, Marcus Bäumer, Robert Güttel   +6 more
wiley   +1 more source

Evaluation of phosphate sources using ruminal fiber transit kinetics methodology

Frontiers in Animal Science
IntroductionSince the low phosphorus content is one of the reasons for the low degradation of fiber in roughage such as pasture and by-products, fiber transit kinetics can be an important tool to evaluate differences in digestion depending on phosphorus ...
Claudiney de Jesus Couto, Bruna Cardoso Braga, Raphael dos Santos Gomes, Wagner Pessanha Tamy, Severino Delmar Junqueira Villela, Fernando de Paula Leonel, Fernando de Paula Leonel   +6 more
doaj   +1 more source

Characterization of construction and demolition waste in order to obtain Ca and Si using a citric acid treatment

Dyna, 2016
The paper analyses residual concrete (CW) degradation by organic acids and their potential use as nutrient source for degraded soils. The aims of the research were to carry out a chemical and mineralogical characterization of CW and to evaluate the ...
Erica Mejia Restrepo, Patricio Navarro, Cristian Vargas, Jorge Ivan Tobón, Walter Osorio   +4 more
doaj   +1 more source

Report of the TAC Fact Finding Mission to the International Fertilizer Development Center (IFDC) [PDF]

, 1989
Report of the TAC fact finding mission to IFDC in May 1989 chaired by R. Dudal. IFDC was one of ten nonassociated centers being considered for sponsorship by the CGIAR.
CGIAR Technical Advisory Committee
core  

Closed Loop Phosphorus Recovery and Recycling for Sustainable Hydroponic Farming

Journal of Sustainable Agriculture and Environment, Volume 4, Issue 3, September 2025.
The proposed closed loop recovery and recycling method achieves a 40% reduction in commercial fertiliser use with recycled nutrients, which can be integrated seamlessly within the existing hydroponic systems with minimal capital investment. Stable EC/pH levels enhance nutrient stability and operational efficiency, and achieve 33% fertiliser cost saving.
Suhaib Malkawi, Dharmappa Hagare, Basant Maheshwari   +2 more
wiley   +1 more source

Evaluation of Fatty Acid Waste in the Synthesis of Oligo(Ether‐Ester)s

International Journal of Polymer Science, Volume 2019, Issue 1, 2019., 2019
In this study, the waste of sunflower oil refinement was converted to a fatty acid glycidyl ester (FAGE). An unsaturated oligo(ether‐ester) (OEE) was synthesized by ring‐opening polymerization using propylene oxide (PO) and FAGE. Oligo(ether‐ester) production was achieved with a high yield of 80% at 5 h and 0°C when the mole ratio of PO : FAGE was 1 ...
S. Kocaman, A. Cerit, U. Soydal, M. E. Marti, G. Ahmetli, Cornelia Vasile   +5 more
wiley   +1 more source

EFFECT OF SAMPLING CONDITIONS ON THE RESULTS OF THE RADON-222 SPECIFIC ACTIVITY ANALYSIS IN DRINKING WATER WITH GAMMA/SPECTROMETRY

Водное хозяйство России: проблемы, технологии, управление, 2020
The article deals with researches of the different factors’ impact upon the result of gamma/spectrometric determination of 222Rn specific activity in drinking water during sampling.
Vladimir S. Semenishchev, Anna V. Voronina, Svetlana M. Titova, Lyubov A. Tomashova   +3 more
doaj   +1 more source

Importance of phosphate pock application for sustaining agricultural production in Egypt

Bulletin of the National Research Centre, 2019
Background Phosphorus is one of the essential nutrients required for plant growth. Although it is moderately available in nature, it is a deficient nutrient in most soils especially calcareous soils.
Farid Hellal, Saied El-Sayed, Raafat Zewainy, Ahmad Amer   +3 more
doaj   +1 more source