Results 11 to 20 of about 2,452,019 (253)

Two-Phase Flow in Circular Secondary Sedimentation Tanks [PDF]

, 1997
The main objective of this work was to optimise a numerical model to predict the flow in circular secondary sedimentation tanks. The numerical models in the literature were reviewed and the new opportunities for research were identified.
Matko, T. I. R.
core   +7 more sources

Research on influence of CPAM ionic degree on settling characteristics of high muddied coal slime water

Meitan kexue jishu, 2023
In order to study the sedimentation characteristics and action mechanism of cationic polyacrylamide (CPAM) with different ionic degrees on the high muddied coal slime water, the particle size composition and mineral composition of the high muddied coal ...
FAN Youlin, CHANG Ting, ZHANG Jinlong, XU Hongxiang, CUI Jiahua, TIAN Han, YIN Yanan   +6 more
doaj   +1 more source

Development of spacer fluids and cement slurries compositions for lining of wells at high temperatures

Записки Горного института, 2020
Article is devoted to creation of new compositions of process solutions for lining of directional wells at high temperatures. Developed compositions provide high durability characteristics of cement stone.
Seyyed Shahab TABATABAEE MORADI, Nikolay I. NIKOLAEV, Tatiana N. NIKOLAEVA   +2 more
doaj   +1 more source

Ultra-Lightweight Cement Slurry to Seal Wellbore of Poor Wellbore Stability

Energies, 2020
The article presents the recipe for ultra-lightweight cement slurry for wellbore sealing. In ordinary lightweight cement slurries, the addition of microspheres and a large amount of water are used to maintain rheological parameters.
Marcin Kremieniewski
doaj   +1 more source

Petroleum products in wastewater and their properties [PDF]

BIO Web of Conferences
Water bodies are polluted by oil and petroleum products from various sources. The primary sources are navigation, accidents on ships and coastal areas, industrial wastewater discharges, surface wastewater from settlements, and transportation crossings of
Alekseev Evgeny Valerevich, Bukina Olga Valentinovna   +1 more
doaj   +1 more source

The Synthesis and Study of Metal Powder Stabilizer Properties in Lubrication Compositions

Инженерные технологии и системы, 2019
Introduction. Modern manufacturing technologies of powder materials allow obtaining particles sized 0.1–0.5 μm. Powders with such dispersion have a very high surface energy and, consequently, unique properties. Powders with a given size can be used as an
Valentin V. Safonov, Valery V. Ostrikov, Vadim V. Venskaytis, Konstantin V. Safonov, Alexandr S. Azarov   +4 more
doaj   +1 more source

Study on sedimentation stability of magnetorheological fluids based on different lubricant formulations

Materials Research Express, 2020
Magnetorheological Fluids (MRFs) is rapidly emerging as a type of new fluid intelligence material that is controllable and low-energy consuming with high output and fast response.
Su Zhibin, Luo Yiping, Wang Ying, Luo Jiao, Ji Dongsheng   +4 more
doaj   +1 more source

Fe3O4 nanoparticles anchoring onto graphitic carbon nitrogen nanosheets for enhanced magneto-stimuli responses and sedimentation stability

Journal of Materials Research and Technology, 2023
A kind of novel two-dimensional magnetic nanocomposites were successfully fabricated via the immobilization of Fe3O4 nanoparticles onto the surface of graphitic carbon nitrogen (g-C3N4) nanosheets by a facile liquid exfoliated method and subsequent ...
Guangshuo Wang, Fangfang Si, Yingying Ma, Yanming Wang, Zhixiao Zhang, Ruitao Yu, Xiaoliang Zhang, Guoqing Chang, Jingbo Mu, Hongwei Che, Ping Li, Dong Li   +11 more
doaj   +1 more source

Technological evaluation and determination of the traits stability in breeding materials in the early generations

Растениевъдни науки, 2023
The experiment was carried out on an experimental field of Institute of Plant Genetic Resources "K. Malkov", Sadovo during the period 2016 - 2018.
Zlatina Uhr, Teodora Angelova, Evgeniy Dimitrov, Rangel Dragov   +3 more
doaj   +1 more source

INVESTIGATION OF THE PROPERTIES OF THE SUSPENSIONS FOR NON-STICK COATINGS FOR FOUNDRY

Литьë и металлургия, 2015
The research aimed at figuring out dependence of the technological properties (density, thickness of the coating, reduced strength and sedimentation stability) of the suspensions for nonstick coatings on the for activation time powder quartz graphite ...
T. Gil’manshina, S. Lytkina, T. Bogdanova, S. Hudonogov, A. Kosovich, E. Partyko   +5 more
doaj   +1 more source