Results 31 to 40 of about 798 (84)

Electrochemical generation of Cu(I) complexes in aqueous solutions studied by on-line mass spectrometry [PDF]

open access: yes, 2007
Taking advantage of the electrochemical aspects of electrospray ionization (ESI) sources in positive ionization mode mass spectrometry (MS), aqueous copper complexes are electrogenerated using sacrificial copper electrodes.
Prudent, M.   +5 more
core   +1 more source

Experiments with the titanium dioxide-ruthenium tris-bipyridine-nickel cyclam system for the photocatalytic reduction of CO2

open access: yesGreen Processing and Synthesis, 2013
Ruthenium tris-bipyridine derived complexes functionalized by either carboxyl or phosphonyl groups were tested as sensitizers for the photocatalytic reduction of carbon dioxide in the presence of nickel cyclam acting as a catalyst, and a sacrificial ...
Montanaro Sara   +7 more
doaj   +1 more source

Burials with Beads from Anatkasy Burial Ground

open access: yesПоволжская археология, 2018
The paper features the materials of burials with beads from the Anatkasy burial ground corresponding to the medieval Mari culture. The site is located on the B. Tsivil river, right tributary of the Volga river.
Nikitina Tatyana B.   +2 more
doaj   +1 more source

HIERARCHIC SKELETAL ORGANIZATION – A FACTOR REGULATING THE STRUCTURE OF FATIGUE INJURIES. PART III. MODELING THE INITIAL STAGE OF THEIR DEVELOPMENT

open access: yesTravmatologiâ i Ortopediâ Rossii, 2011
The authors describe general conditions of fatique injuries (FI) initiation and development, and discuss the conformity between hierarchic skeletal organization levels and spatial differentiation of the initial FI types – local discrete and local ...
A. S. Avrunin   +3 more
doaj   +1 more source

Arched Objects (Noseband) as Part of a Horse Harness of the Early Nomads of the Southern Urals

open access: yesНижневолжский археологический вестник, 2020
The presented article analyzes a series of objects, which are parts of the horse harness of the early nomads in the Southern Urals of the 4th century BC. These are arched objects (nosebands) designed to increase the efficiency of horse control.
Sergey V. Sirotin
doaj   +1 more source

A novel strategy for loading metal cocatalysts onto hollow nano-TiO2 inner surface with highly enhanced H2 production activity

open access: yesGreen Energy & Environment, 2023
The loading strategy of cocatalysts affects its activity exerting and atom utilization. Here, a novel strategy for loading precious metal (Pt) cocatalysts by means of ultrathin N-doped carbon layer is reported.
Nan Chen   +4 more
doaj   +1 more source

Electroreductive cyclisation of unsatured halides catalysed by nickel macrocyclic complexes [PDF]

open access: yes, 1999
The indirect electroreduction of unsaturated aliphatic halides using Ni(II) complexes as electron-transfer mediators is achieved in N,N'-dimethylformamide by constant current electrolysis between a cathode and a sacrificial anode in a diaphragmless cell.
Medeiros, Maria José   +9 more
core   +1 more source

Between the taiga and the steppe: a new find of the “bears in a sacrificial pose” plaque from the Upper Ob region [PDF]

open access: yesВестник археологии, антропологии и этнографии
The purpose of this study is a comprehensive analysis of a new find of a plaque depicting “bears in a sacrificial pose” from the Chumysh-Perekat necropolis.
Fribus A.V., Grushin S.P.
doaj   +1 more source

Fragments Of Chain Mail Armor In Women's Attire Of The Population Of The Middle Kama Region In The 3rd-5th Centuries AD

open access: yesАрхеология евразийских степей, 2021
The paper discusses chain mail fragments in the female burial equipment of the Mazunino Culture (or Mazunino stage of the Cheganda culture of the Piany Bor cultural–historical community by R.D. Goldina) in the Middle Kama Region.
Khairullina Olga F.
doaj   +1 more source

Elucidating Dynamics of Precoordinated Ionic Bridges as Sacrificial Bonds in Interpenetrating Network Hydrogels [PDF]

open access: yes, 2016
Interpenetrating polymer network (IPN) hydrogels were developed by engineering ionic bridges between carboxylated cellulose nanofibrils (CNFs) and amine-terminated poly­(ethylene glycol) (PEG) into a covalent poly­(acrylamide) architecture network, and ...
Jun Yang (2084)   +3 more
core   +1 more source

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