Results 51 to 60 of about 27,955 (249)

Chemical enhancement of soil-based marks on nonporous surfaces followed by gelatin lifting [PDF]

open access: yes, 2014
This study assessed the use of processing techniques (potassium thiocyanate, 2-2-dipyridil, potassium ferrocyanide, ammonium pyrrolidinedithiocarbamate, safranin, magnetic powder) for the enhancement of soil-based marks on nonporous surfaces, followed by
Deacon, Paul   +2 more
core   +1 more source

Antioxidant and antihemolytic activities of methanol extract of Hyssopus angustifolius [PDF]

open access: yes, 2012
This study was designed to evaluate antioxidant and antihemolytic activities of Hyssopus angustifolius flower, stem and leaf methanol extracts by employing various in vitro assays.
Alinezhad, H.   +6 more
core   +3 more sources

Stability of Perovskite Indoor Photovoltaics: A Focused Review and a Call for Standardized Stability Reporting

open access: yesAdvanced Energy Materials, EarlyView.
While perovskite solar cells have been widely studied, including their stability, perovskite indoor photovoltaics (IPVs) have only recently emerged. Nevertheless, more studies are appearing in the literature. The systematic stability study of IPVs is crucial, particularly given the inconsistencies in reported methodologies and results, which call for ...
Ivy Mawusi Asuo   +7 more
wiley   +1 more source

Bis(2-{[2-(isopropylazaniumyl)ethyl]iminomethyl}-6-methoxyphenolato)copper(II) bis(thiocyanate)

open access: yesActa Crystallographica Section E, 2011
The asymmetric unit of the title compound, [Cu(C13H20N2O2)2](NCS)2, contains one half-dication, located on an inversion center, and one thiocyanate anion.
Lin Yuan
doaj   +1 more source

Heterocyclic systems containing S/N regioselective nucleophilic competition: Facile synthesis, antitubercular and antimicrobial activity of thiohydantoins and iminothiazolidinones containing the benzo [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
The required compounds N-aryl-N'-(3-chloro-2-benzo[b]thenoyl)-thioureas 1a-k were prepared by condensing 3-chloro-2-benzo[b]thenoyl chloride with different arylamines using ammonium thiocyanate, which in turn when treated with chloroacetic acid, yielded ...
Kachhadia V.V., Patel M.R., Joshi H.S.
doaj   +1 more source

One Hour of Chemical Demonstrations [PDF]

open access: yes, 1997
This article describes a diverse set of chemistry demonstrations especially selected to encourage student interaction and to be easily transported. The demonstrations may be presented at a level that can be tailored to any audience– from very young ...
Brook, B.   +3 more
core   +1 more source

Thermodynamic Studies on Phase Transitions of Potassium Thiocyanate and Ammonium Thiocyanate Crystals [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1979
Abstract Heat capacities of KSCN and NH4SCN crystals were measured by adiabatic calorimetry in the temperature range between 13 K and the melting points. Molar volume of NH4SCN was also determined above room temperature. Entropy change for the II-I transition of KSCN (414.54 K, essentially higher order but accompanied with the first ...
Yoshio Kinsho   +3 more
openaire   +1 more source

Recent Advances on Self‐Powered Metal Halide Perovskite Photodetectors

open access: yesEcoEnergy, EarlyView.
This review outlines that metal halide perovskites, with high absorption coefficient and carrier mobility, enable self‐powered photodetectors. These devices operate without external power, with improvements via structural optimization, film engineering, and defect passivation, showing promise in smart sensors and Internet of Things applications ...
Guoqing Xiong   +5 more
wiley   +1 more source

Study of the reaction between ammonium thiocyanate and Fe (II) or Fe (III) using infrared spectroscopy: an experiment of prebiotic chemistry

open access: yesSemina: Ciências Exatas e Tecnológicas, 2010
The prebiotic chemistry studies the reactions that could be played an important role on origins of life on Earth. However, these reactions should be carried out under conditions that existed on the prebiotic Earth.
Dimas Augusto Morozin Zaia   +3 more
doaj  

Bis[benzyl 2-(heptan-4-ylidene)hydrazine-1-carboxylate]bis(thiocyanato)cobalt(II)

open access: yesIUCrData, 2019
The title compound, [Co(NCS)2(C15H22N2O2)2] or C32H44CoN6O4S2, was prepared from cobalt(II) nitrate, benzyl carbazate and ammonium thiocyanate in the presence of 4-heptanone.
Palanivelu Nithya   +2 more
doaj   +1 more source

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