Results 41 to 50 of about 233,059 (308)
Yankuang ceshi, 2023 BACKGROUND Nano-titanium dioxide (nTiO2) is widely used to remove heavy metals from water. Phosphate, a common inorganic anion in the aquatic environment, can affect the adsorption characteristics of heavy metal ions on nTiO2.
LI Yanxiang +6 more
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DISSOLVED LOAD OF GREAT ZAB RIVER [PDF]
Mesopotamia Journal of Agriculture, 2013 The study had been achieved on the Great – Zab river at Eski Kalak monitoring station (3618 N , 4333- E , 280m A.S.1) during august 2009 and end of April 2010 (9 months).The river of Great – Zab drains on area of 31258 Km2, this area is located between
I. Anwer, S. Al- Hamrawi
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Beverages, 2020 Coffee is one of the most common drinks worldwide. Due to the variability of elements composition, coffee is important for human health. The aim of this study is to assess the concentration of certain selected elements of commercial samples of roasted ...
Sati Y. Al-Dalain +4 more
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Synthesis, molecular and crystal structure of [(NH2)2CSSC(NH2)2]2[RuBr6]Br2·3H2O
Acta Crystallographica Section E: Crystallographic CommunicationsThe title compound, bis[dithiobis(formamidinium)] hexabromidoruthenium dibromide trihydrate, [(NH2)2CSSC(NH2)2]2[RuBr6]Br2·3H2O, crystallizes in the orthorhombic system, space group Cmcm, Z = 4.
Olga V. Rudnitskaya +7 more
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Season- and year-wise distribution of some trace metals and anions in Gulshan Lake, Bangladesh [PDF]
Maejo International Journal of Science and Technology, 2010 A study was conducted to quantify some trace metals and anions in Gulshan Lake, Bangladesh over five years. The heavy metals, i.e. Pb, Cd, Cr, Co, Ni and Cu, were found below detection limit.
Mohammad A. Mottaleb
doaj
Aqueous extraction of anions from coal and fly ash followed by ion-chromatographic determination [PDF]
Journal of the Serbian Chemical Society, 2016 Three different techniques were applied for the aqueous extraction of anions from coal and fly ash: rotary mixer- and ultrasonic-assisted extraction with different duration time, and microwave-assisted extraction at different temperatures.
Tasić Aleksandra M. +4 more
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Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis
FEBS Letters, EarlyView.Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee +7 more
wiley +1 more source
Anion receptors containing thiazine-1,1-dioxide heterocycles as hydrogen bond donors
Beilstein Journal of Organic Chemistry, 2010 The synthesis, X-ray crystal structures and anion recognition properties of two receptors containing thiazine-1,1-dioxide heterocycles as hydrogen bond donating subunits are reported.
Hong-Bo Wang +2 more
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Техника и технология пищевых производств, 2023 Distilled alcoholic drinks are popular all over the world. Monitoring the quality and safety of such drinks requires modern instrumental methods. Chemical composition of alcoholic beverages has become focus of numerous experimental and theoretical ...
Nataliya V. Shelekhova +2 more
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Reconstructing enzyme evolution by protein engineering
FEBS Letters, EarlyView.Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler +2 more
wiley +1 more source