Results 51 to 60 of about 1,218,797 (156)

IDENTIFICAÇÃO DE COMPOSTOS ORGÂNICOS EM LIXIVIADO DE ATERRO SANITÁRIO MUNICIPAL POR CROMATOGRAFIA GASOSA ACOPLADA A ESPECTROMETRIA DE MASSAS

open access: yesQuímica Nova, 2015
The organic compounds present in leachate can contaminate soil, superficial and underground water, and the majority is considered harmful to the environment and human health.
Eliane Sloboda Rigobello   +3 more
doaj   +1 more source

Effects of sedimentation and periphyton communities on embryonic rainbow smelt, Osmerus mordax [PDF]

open access: yes, 2009
The decline of anadromous rainbow smelt (Osmerus mordax) populations has been suspected to be linked to anthropogenic causes. Increased runoff from agriculture and urbanization has led to additional sediment inputs and eutrophying compounds in rivers ...
Wyatt, Lauren Helena
core   +2 more sources

Superconductivity in the $\eta$-carbide-type oxides Zr4Rh2Ox

open access: yes, 2019
We report on the synthesis and the superconductivity of Zr$_4$Rh$_2$O$_{x}$ ($x$ = 0.4, 0.5, 0.6, 0.7, 1.0). These compounds crystallize in the $\eta$-carbide structure, which is a filled version of the complex intermetallic Ti$_2$Ni structure.
Lago, Jorge   +2 more
core   +2 more sources

An Investigation of Structure-Activity Relationships of Azolylacryloyl Derivatives Yielded Potent and Long-Acting Hemoglobin Modulators for Reversing Erythrocyte Sickling

open access: yesBiomolecules, 2020
Aromatic aldehydes that bind to sickle hemoglobin (HbS) to increase the protein oxygen affinity and/or directly inhibit HbS polymer formation to prevent the pathological hypoxia-induced HbS polymerization and the subsequent erythrocyte sickling have for ...
Abdelsattar M. Omar   +6 more
doaj   +1 more source

Development of an improved oxygen electrode for use in alkaline H2-O2 fuel cells Quarterly report, Oct. 1 - Dec. 31, 1966 [PDF]

open access: yes
Interstitial compounds of transition elements prepared for improving oxygen electrode in alkaline hydrox fuel ...
Akhtar, S., Bienstock, D., Grein, C. T.
core   +2 more sources

Water extract of Cryphaea heteromalla (Hedw.) D. Mohr bryophyte as a natural powerful source of biologically active compounds [PDF]

open access: yes, 2019
Bryophytes comprise of the mosses, liverworts, and hornworts. Cryphaea heteromalla, (Hedw.) D. Mohr, is a non-vascular lower plant belonging to mosses group. To the date, the most chemically characterized species belong to the liverworts, while only 3.2%
Biagio P. L. S.   +12 more
core   +1 more source

Development of an improved oxygen electrode for use in alkaline H2-O2 fuel cells Quarterly report, Apr. 1 - Jun. 30, 1967 [PDF]

open access: yes
Preparation of institial compounds of transition metals for hydrogen oxygen fuel cell ...
Akhtar, S.   +4 more
core   +1 more source

Extraction of mineral acids with neutral oxygen containing compounds from mixed nitric-chloride solutions

open access: yesТонкие химические технологии, 2013
Data on a systematic research of the extraction of nitric and chloride acids from mixed nitric-chloride solutions with neutral oxygen containing compounds – triisoamylphosphate and isoamyldyalkyl (C7–C9) phosphine oxide are presented.
G. V. Kostikova   +5 more
doaj  

Determination of Volatile Organic Compounds in Medical Molecular Sieve Oxygen Concentrators by Thermal Desorption-Gas Chromatography-Mass Spectrometry

open access: yesZhongguo yiliao qixie zazhi
A method for determining volatile organic compounds (VOCs) emitted from medical molecular sieve oxygen concentrators was developed using thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS). The oxygen concentrator gas was sampled at a flow
Danmei ZHAO   +5 more
doaj   +1 more source

Developments in Synthetic Application of Selenium(IV) Oxide and Organoselenium Compounds as Oxygen Donors and Oxygen-Transfer Agents

open access: yesMolecules, 2015
A variety of selenium compounds were proven to be useful reagents and catalysts for organic synthesis over the past several decades. The most interesting aspect, which emerged in recent years, concerns application of hydroperoxide/selenium(IV) oxide and ...
Jacek Młochowski   +1 more
doaj   +1 more source

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