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Now showing items 83-87 of 87

The changing water cycle: Burabay National Nature Park, Northern Kazakhstan

Yapiyev, Vadim; Sagintayev, Zhanay; Verhoef, Anne; Kassymbekova, Anara; Baigaliyeva, Marzhan; Zhumabayev, Dauren; Malgazhdar, Daniyar; Abudanash, Damira; Ongdas, Nurlan; Jumassultanova, Saltanat (Wires Water, 2017)

Water resources in Central Asia are scarce, so complicated issues arise from this. Kazakhstan is a Central Asian landlocked country, which has mostly closed drainage basins, characterized by endorheic lakes that do not ...
Top soil physical and chemical properties in Kazakhstan across a north-south gradient

Yapiyev, Vadim; Gilman, Charles P.; Kabdullayeva, Tolganay; Suleimenova, Akmaral; Shagadatova, Aizhan; Duisembay, Azat; Naizabekov, Sanzhar; Mussurova, Saule; Sydykova, Kamilya; Raimkulov, Ilyas; Kabimoldayev, Ilyas; Abdrakhmanova, Ainagul; Omarkulova, Symbat; Nurmukhambetov, Dastan; Kudarova, Aliya; Malgazhdar, Daniyar; Schönbach, Christian; Inglezakis, Vassilis (SCIENTIFIC DATA, 2018-11-13)

Kazakhstan’s soil properties have yet to be comprehensively characterized. We sampled 40 sites consisting of ten major soil types at spring (wet) and late-summer (dry) seasons. The sample locations range from semi-arid to ...
TOWARD REDUCING SURFACTANT ADSORPTION ON CLAY MINERALS BY LIGNIN FOR ENHANCED OIL RECOVERY APPLICATION

Abbas, Azza Hashim; Pourafshary, Peyman; Sulaiman, Wan Rosli Wan; Jaafar, Mohd Zaidi; Nyakuma, Bemgba B. (ACS Omega, 2021-07-12)

The significant loss of surfactants during reservoir flooding is a challenge in oil field operations. The presence of clay minerals affects the surfactant performance, resulting in surfactant losses. This is because ...
Uncertainty quantification of rock quality designation at the Gazestan phosphate deposit

Madani, Nasser; Yagiz, S.; Adoko, A.C.; Battalgazy, Nurassyl (Geometallurgy Conference 2018, Back to the Future Cape Town, (6-8 August 2018). The Southern African Institute of M ining and Metallurgy, 2018-08-06)

Several geomechanical variables reflect the characteristics of rock masses and in recent years have been considered as the geometallurgical responses in the mining industry. These variables have a great effect on the ...
UTILIZING ULTRASONIC WAVES IN THE INVESTIGATION OF CONTACT STRESSES, AREAS, AND EMBEDMENT OF SPHERES IN MANUFACTURED MATERIALS REPLICATING PROPPANTS AND BRITTLE ROCKS

Bou-Hamdan, Kamel Fahmi; Abbas, Azza Hashim (Arabian Journal for Science and Engineering, 2021-12-02)

In the oil and gas industry, hydraulic fracturing (HF) is a common application to create additional permeability in unconventional reservoirs. Using proppant in HF requires understanding the interactions with rocks such ...