Results 71 to 80 of about 1,034,709 (313)

Research on correlation between nitrogen compounds, iron and manganese concentrations in drinking water supply systems

open access: yesJournal of Environmental Engineering and Landscape Management, 2013
A wide range of material sources potentially contribute to contaminant loads in potable water. The ability of water supply systems to act as emission control barriers to tap water micro pollutants, thereby providing environmental benefits in addition to ...
Marina Valentukevičiene   +3 more
doaj   +1 more source

Process for purification of waste water produced by a Kraft process pulp and paper mill [PDF]

open access: yes, 1979
The water from paper and pulp wastes obtained from a mill using the Kraft process is purified by precipitating lignins and lignin derivatives from the waste stream with quaternary ammonium compounds, removing other impurities by activated carbon produced
Humphrey, M. F.
core   +1 more source

The ammonolysis of esters in liquid ammonia [PDF]

open access: yes, 2013
The rates of ammonolysis of alkyl benzoate and phenylacetate esters in liquid ammonia increase with the acidity of the leaving group alcohol and show relatively large Brønsted βlg values of −1.18 and −1.34, respectively, when plotted against the aqueous ...
Atherton, John   +2 more
core   +1 more source

Establishing an assay to evaluate d‐amino acid oxidase enzyme kinetics and inhibition using WST‐8 redox dye

open access: yesFEBS Open Bio, EarlyView.
This study investigated a novel WST‐8‐based assay for evaluating d‐Amino acid oxidase (DAO) inhibitors. We confirmed its effectiveness using known inhibitors and found that uremic toxins possess relatively weak inhibitory activity compared to existing drugs.
Kahoko Miyake   +4 more
wiley   +1 more source

Crescimento e produtividade do almeirão em concentrações de N total contendo NH4+ na solução nutritiva Growth and yield of chicory plants under total N concentrations containing NH4+ in the nutrient solution

open access: yesCiência Rural, 2007
O crescimento e a produtividade do almeirão foram determinados em cultivo hidropônico fechado com cinco concentrações de N contendo NH4+ na solução nutritiva.
Rodrigo dos Santos Godoi   +4 more
doaj   +1 more source

(Methyldiphenylphosphoranylidene)ammonium chloride [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2009
The title compound, C(13)H(15)NP(+)·Cl(-), was obtained by hydrolysis of the N-trimethysilyl derivative of methydiphenyl-imino-phosphine. The dihedral angle between the phenyl rings in the cation is 61.5 (3)°. In the crystal structure, inter-molecular N-H⋯Cl hydrogen bonds links the two components, forming a centrosymmetric 2 + 2 aggregate.
Cintya Valerio-Cárdenas   +2 more
openaire   +3 more sources

Combined 5‐aminolevulinic acid and ferric ammonium citrate treatment promotes hair follicle growth by activating dermal papilla cells

open access: yesFEBS Open Bio, EarlyView.
5‐Aminolevulinic acid combined with ferric ammonium citrate (5‐ALA/FAC) stimulates dermal papilla cell activity and promotes hair follicle growth. The treatment enhances ERK and AKT signaling, increases hair‐inductive gene expression, and restores dermal papilla function suppressed by dihydrotestosterone and oxidative stress, resulting in enhanced hair
Han‐Wook Ryu, Eok‐Soo Oh, Sewoon Kim
wiley   +1 more source

The Influence of Soap on Starch-Pigment Coated Paper [PDF]

open access: yes, 1958
A literature survey is presented concerning the effects of soap on the rheological properties of coatings, and upon the physical properties of the coated paper.
Keck, Paul W.
core   +1 more source

Cyanate Assimilation by the Alkaliphilic Cyanide-Degrading Bacterium Pseudomonas pseudoalcaligenes CECT5344: Mutational Analysis of the cyn Gene Cluster [PDF]

open access: yes, 2019
The alkaliphilic bacterium Pseudomonas pseudoalcaligenes CECT5344 can grow with cyanate, cyanide, or cyanide-containing industrial residues as the sole nitrogen source, but the assimilation of cyanide and cyanate takes place through independent pathways.
Cabello, Purificación   +5 more
core   +1 more source

Ammonium imidazolium dichromate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2012
In the crystal structure of the title compound, (C3H5N2)(NH4)[Cr2O7], the anions and cations are linked through N—H...O hydrogen bonds, resulting in a three-dimensional structure which contains three kinds of layers parallel to (001). One layer contains imidazole cations, the other two layers the ammonium cations and dichromate anions.
openaire   +3 more sources

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