Results 61 to 70 of about 5,973,311 (312)

PEMBUATAN ASAM OKSALAT DARI SEKAM PADI [PDF]

, 2005
Rice husk is one of the agricultural waste containing cellulose. The oxalic acid can be produced from this material through 4 steps: reaction, precipitation, acidification and crystallization.
Mastuti W, Endang
core  

Non‐Destructive Hydrophobic Engineering of Inverse Catalysts for Methanol Synthesis from CO2

Advanced Science, EarlyView.
In this study, we report a non‐destructive hydrophobic modification strategy for ZrO2/Cu catalyst through physical mixing with PDVB. The optimized ZrO2/Cu‐PDVB catalyst achieves a methanol space‐time yield of 920.10 mgCH3OH gcat−1 h−1 under mild conditions, outperforming the unmodified catalyst by 30 %.
Dingran Wang, Bingyan Sun, Keran Wang, Di Fu, Ting Fan, Yanghui Lu, Tianfu Zhang, Kaige Wang   +7 more
wiley   +1 more source

Statistical Modeling of Oxalic Acid Adsorption on Rice Bran Using Response Surface Methodology–Box–Behnken Design [PDF]

Iranian Journal of Chemistry & Chemical Engineering
This study investigates the adsorption of oxalic acid by rice bran, a low-cost bioresource. Fifteen adsorption experiments were conducted under conditions specified by Response Surface Methodology (RSM) using the Box–Behnken Design (BBD).
Narges Samadani Langeroodi
doaj   +1 more source

PENINGKATAN KADAR ZINGIBERN DALAM MINYAK JAHE MENGGUNAKAN PENGKELAT ASAM OKSALAT DAN PENGUJIAN DENGAN SPECTROPHOTOMETER VISIBLE (Increasing Zingibern Content in Ginger Oil with Oxalic Acid as Chelating Agent and Testing by Visible Spectrophotometer) [PDF]

, 2017
Ginger oil from steam distillation process has low zingibern content because it has not been removed from impurities and complex compounds. Therefore, chelating method is used which serves to improve the quality of ginger oil.
PUSPITANINGRUM, LEJAR DWI
core  

One‐Step, High‐Removal‐Rate and Low‐Damage Chemical Mechanical Polishing of InP Enabled by Hydrolysis Activated PF6− with In Situ Fluoride Passivation

Advanced Science, EarlyView.
In this work, we propose a CMP method for InP using NH4PF₆, which hydrolyzes under In3+ catalysis to form reactive species. These convert InP into low‐binding‐energy fluorides, facilitating removal and dissolution. The process delivers high material removal rates, smooth surfaces, and fluorine passivation that lowers defect density and improves ...
Shigong Fu, Jianwei Zhou, Chenwei Wang, Yanchao Ge, Chong Luo, Yuhang Qi   +5 more
wiley   +1 more source

Pyridinium oxalate(1–) oxalic acid dihydrate

Acta Crystallographica Section E Structure Reports Online, 2003
In the title compound, C5H6N+·C2HO4−·C2H2O4·2H2O, the pyridine mol­ecule exists as a cation and the oxalic acid mol­ecules as an oxalate(1−) ion and a neutral oxalic acid. The structure is stabilized by O—H⋯O and N—H⋯O hydrogen bonds in addition to carbonyl–carbonyl O⋯C short contacts and van der Waals interactions.
K. Rajagopal, V. Tamilselvi, R. V. Krishnakumar, S. Natarajan   +3 more
openaire   +1 more source

Decontamination of Chicken Breasts Using Organic Acids and Lauricidin [PDF]

, 2005
Lauricidin, lactic and oxalic acids were evaluated for their effectiveness in reducing and inhibiting the growth of predominant spoilage and pathogenic microorganisms.
Anang, Daniel Mensah
core  

Seasonal variation of aliphatic amines in marine sub-micrometer particles at the Cape Verde islands [PDF]

, 2009
Monomethylamine (MA), dimethylamine (DMA) and diethylamine (DEA) were detected at non-negligible concentrations in sub-micrometer particles at the Cap Verde Atmospheric Observatory (CVAO) located on the island of São Vicente in Cape Verde during algal ...
Gnauk, T., Herrmann, H., Iinuma, Y., Karstensen, Johannes, Lehmann, S., Müller, C., van Pinxteren, D.   +6 more
core   +1 more source

Multifunctional Eutectic Mixtures Enable Integrated Recovery of U, Pu, and Sr From Nuclear Waste

Advanced Science, EarlyView.
A novel class of multifunctional eutectic mixtures, crafted from crown ether and organophosphorus molecules, achieves highly efficient, simultaneous recovery of uranium, plutonium, and strontium from nuclear waste. The material operates via a dual “coordination‐encapsulation” mechanism within self‐assembled reverse‐micelle structures, offering a ...
Yifan Wang, Yanjun Lv, Qilong Tang, Huaixin Hao, Jianfeng Jia, Gang Ye, Jing Chen, Chao Xu, Zhipeng Wang   +8 more
wiley   +1 more source

Results of international standardised beekeeper surveys of colony losses for winter 2012-2013 : analysis of winter loss rates and mixed effects modelling of risk factors for winter loss. [PDF]

, 2014
This article presents results of an analysis of winter losses of honey bee colonies from 19 mainly European countries, most of which implemented the standardised 2013 COLOSS questionnaire.
Aivar Raudmets, Alison Gray, Ari Seppälä, BATES D, Bjørn Dahle, BORNMANN L, Christoph Otten, Flemming Vejsnæs, Franco Mutinelli, GRAY A, Grażyna Topolska, Jean-Daniel Charrière, Justinas Kretavicius, Lassi Kauko, Magnus Peterson, Marica M Drazic, Mary F Coffey, MUTINELLI F, Preben Kristiansen, R DEVELOPMENT CORE TEAM, Robert Brodschneider, Romée van der Zee, Róbert Chlebo, Valters Brusbardis, VAN DER ZEE R, VANENGELSDORP D, Victoria Soroker, Violeta Santrac   +27 more
core   +1 more source