Results 71 to 80 of about 641,948 (308)

The influence of rigidity of the collapsed roof rocks in the mined-out space on the state of the preparatory mine workings [PDF]

, 2019
Purpose. The substantiation of accounting the deformation-strength characteristics of the collapsed rocks and the rocks consolidating near the reusable preparatory mine working of the mined-out space to optimize the loading parameters of its fastening ...
Barabash, M, Bondarenko, V, Kicki, J, Salieiev, I, Symanovych, H   +4 more
core   +1 more source

THE EFFECT OF SULPHURIC ACID CONCENTRATION ON SOLVENT EXTRACTION OF ReO4 - BY THE LONG-CHAIN ALIPHATIC TERTIARY AMINES AND ALCOHOLS [PDF]

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2010
The effect of sulphuric acid concentration on solvent extraction of ReO4- by the long-chain aliphatic tertiary amines and alcohols in a wide range of H2SO4 concentrations in initial solutions is discussed.
Aleksander G. Kasikov, Anna M. Petrova
doaj  

Technosols on mining wastes in the subarctic: Efficiency of remediation under Cu-Ni atmospheric pollution

International Soil and Water Conservation Research, 2019
The copper-nickel factory's emissions in the Murmansk region, Russia, led to the degradation of plant cover and topsoil with the subsequent formation of industrial barrens.
Marina V. Slukovskaya, Viacheslav I. Vasenev, Kristina V. Ivashchenko, Dmitry V. Morev, Svetlana V. Drogobuzhskaya, Liubov A. Ivanova, Irina P. Kremenetskaya   +6 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Geochemical constraints on the Hadean environment from mineral fingerprints of prokaryotes [PDF]

, 2017
The environmental conditions on the Earth before 4 billion years ago are highly uncertain, largely because of the lack of a substantial rock record from this period.
Abrevaya, Ximena Celeste, Chaffin, Michael S., Conti, Maria Josiane, Navarro, Margareth Sugano, Novoselov, Alexey A., Schneider, Jerusa, Serrano, Paloma, Silva, Dailto, Souza Filho, Carlos Roberto de   +8 more
core   +1 more source

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

Advanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian, Anh Thi Le, Anh Thi Van Le, Dung My Thi Dang, Tin Chanh Duc Doan, Chien Mau Dang, Martin Bolduc   +6 more
wiley   +1 more source

Genetic signature in mineral nutrition in oil palm (Elaeis guineensis Jacq.): A new panorama for high yielding materials at low fertiliser cost [PDF]

, 2009
Significant differences in mineral nutrition have been demonstrated between progenies and main categories at PT Socfindo (Jacquemard et al, 2002). New set of investigation has been conducted based on larger genetic background.
Jacquemard, Jean-Charles, Ollivier, Jean, Permadi, Pepep, Surya, Erwanda, Suryana, Edyana   +4 more
core  

CYTOGENETIC EFFECTS Y-RADIATION IN THE CELLS OF THE ROOT MERISTEM OF ALLIUM CEPA

Siberian Journal of Life Sciences and Agriculture
Background. Environmental contamination with radioactive materials of geogenic and anthropogenic origin is a global problem. A variety of mutagenicity test procedures has been developed which enable the detection of DNA damage caused by ionizing ...
Maria V. Smirnova, Andrey A. Smirnov
doaj   +1 more source

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

Advanced Functional Materials, EarlyView.
In this work, a magnetic core‐shell catalyst (HOF‐on‐Fe3O4/ZIF‐67) is successfully synthesized, consisting of a metal–organic framework (ZIF‐67) with magnetic Fe3O4 as the core and a porous hydrogen‐bonded organic framework (HOF) as the shell. The catalyst efficiently activated peroxymonosulfate, resulting in rapid and effective removal of water ...
Yingying Du, Chenhui Ding, Chao Deng, Susanta Banerjee, Seema Agarwal   +4 more
wiley   +1 more source

Optimization of the mineral nutrition mode of the perennial flowers used in landscaping of recreational objects of the central part of Minsk [PDF]

, 2013
It is proposed to use the system of optimization of mineral nutrition mode for perennials flowers used in landscaping of recreational objects of the central part of Minsk, which was developed taking into account the needs in basic elements of mineral ...
Burganskaya, T. M., Rusalenko, V. G.
core