Results 111 to 120 of about 1,003,793 (309)

3-Nitroso-4-hydroxy-5,6-benzocoumarin (NHBC) as a reagent for the spectrophotometric determination of copper(II) in alloys

CHIMIA, 1974
Copper(II) forms in the pH range 6.3 to 7.8 a yellowish brown complex with 3-nitroso-4-hydroxy-5,6-benzocoumarin which is soluble in a 60 % dioxan medium giving a deep yellow coloured solution. Beer’s law is obeyed up to 2.80 ppm of copper(II) at 420 nm.
Nitin Kohli, R.P. Singh
doaj   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Synthesis, structural characterization, antimicrobial and cytotoxic effects of aziridine, 2-aminoethylaziridine and azirine complexes of copper(II) and palladium(II). [PDF]

, 2012
The synthesis, spectroscopic and X-ray structural characterization of copper(II) and palladium(II) complexes with aziridine ligands as 2-dimethylaziridine HNCH2CMe2 (a), the bidentate N-(2-aminoethyl)aziridines C2H4NC2H4NH2 (b) or CH2CMe2NCH2CMe2NH2 (c ...
A. Hauss, Alper, Amarasekera, Atagi, Aw, B. Rozalska, Barnes, Beck, Beck, Beckerath, Beuter, Bobka, Budzisz, Cantrell Jr, Cheikh, Danzer, Dietliker, Dos Santos Filho, Duggan, E. Budzisz, Fritz, Galanski, Hassner, Heck, Herberhold, Höfer, I.-P. Lorenz, Ihata, Iyengar, Iyengar, Izumi, J. N. Roedel, Jackson, Jackson, Katzenellenbogen, Kho, Kojima, Lefemine, Leung, Leung, Liu, Lorenz, Lorenz, Lorenz, Lorenz, M. Rozalski, M. Więckowska-Szakiel, Maanen, McLachlan, Milstein, Mitzel, Noll, Palom, Paz, Peng, Porta, Putzien, R. Bobka, Rajski, Roedel, Roedel, Root, S. Wirth, Schold Jr., Sheldrick, Singh, Singh, Sosnovsky, Sweeney, Trost, U. Krajewska, Ukraintsev, Ukraintsev, Ware, Ware, Ware, Watson, Wilberger, Wilberger, Wild, Yadav, Yokoi   +81 more
core   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

Electrochemical Corrosion Behavior of X70 Steel in Sand Soil Contaminated by Copper(II)

International Journal of Electrochemical Science, 2016
X70 steel, a common pipeline material for the long distance transport, has been extensively used in many domestic and overseas underground projects, for example “West-East” project of P. R. China. In order to study the effect of heavy metal copper(II) on
Pengju Han, Ruizhen Xie, Naiming Lin, Bin He   +3 more
doaj   +1 more source

Contributions of EU-project REPCO to apple scab control [PDF]

, 2006
The objective of REPCO is to contribute to the replacement of copper fungicides in organic agriculture by new measures for control of downy mildew (Plasmopara viticola) in grapevine and scab (Venturia inaequalis) in apple.
Eiben, Ute, Heijne, Bart, Hockenhull, John, Köhl, Jürgen, Lindhard Pedersen, Hanne, Tamm, Lucius, Trapmann, Marc   +6 more
core   +1 more source

Synthesis, magnetic and spectral properties of binuclear imidazolate bridged copper(II)-copper(II) and copper(II)-zinc(II) complexes

, 2001
Department of Chemistry, A P. S. University, Rewa-486 003, India Manuscript received 1 November 1999, revised 17 April 2000. accepted 26 August 2000 Two new binuclear imidazolate bridged complexes, [(PAN)Cu(im)Cu(PAN)] (ClO4)2 and [(PAN)Cu(im)Zn(PAN)](ClO4)2 (PAN =1. (2-pyridylazo)-2-naphthol, im = imidazolate) have been prepared.
Ram N. Patel, Ayodhya P. Patel, Krishna B. Pandeya   +2 more
openaire   +2 more sources

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Predicting the capability of oxidized cnw adsorbents for the remediation of copper under optimal operating conditions using rsm and ann models [PDF]

, 2018
Metal pollutants such as copper released into the aqueous environment have been increasing as a result of anthropogenic activities. Adsorption-based treatment technologies offer opportunities to remediate metal pollutants from municipal and industrial ...
A. Hamid, Hazren, Ahmad, Faridah Hanim, Harun‬, ‪Hairuddin, Jasmani, Latifah, Mohamed Sunar, ‪Norshuhaila, Suleiman, Norhidayah   +5 more
core   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source