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2. Production of Potash and N‐Mg Compound Fertilizer via Mineral Shoenite from Kunteyi Salt Lake: Phase Diagrams of Quaternary System (NH 4 ) 2 SO 4 ‐MgSO 4 ‐K 2 SO 4 ‐H 2 O in the Isothermal Evaporation and Crystallization Process

Author

Cheng Li, Xue Zhou, Xueqing Chen, Hong-Fei Guo, and Jilin Cao

Subjects
Mineral, Potash, Evaporation, Geology, engineering.material, Isothermal process, law.invention, law, engineering, Fertilizer, Crystallization, Solubility, Phase diagram, Nuclear chemistry
Published
2021

4. Improvements of myocardial strain and work in diabetes patients with normal ejection fraction after empagliflozin treatment

Author

Xueqing Cheng, Peina Huang, Hongyun Liu, Xiaojun Bi, Yiping Gao, Ruirui Lu, Yipeng Gao, Yani Liu, and Youbin Deng

Subjects
Diabetes mellitus, Empagliflozin, Myocardial function, Diseases of the endocrine glands. Clinical endocrinology, RC648-665
Abstract

ABSTRACT Aims/Introduction To assess the effect of empagliflozin treatment on left ventricular (LV), right ventricular (RV) and left atrial (LA) functions in diabetes patients with normal ejection fraction. Materials and Methods The study included a total of 128 diabetes patients with multiple cardiovascular risk factors who were subjected to a 6‐month follow up from the initiation of empagliflozin treatment. Before and after treatment with empagliflozin, LV, RV and LA strain, and noninvasive myocardial work parameters were evaluated by speckle tracking echocardiography. Results In 128 diabetes patients (mean age 56 ± 8 years, 85 men) with multiple cardiovascular risk factors, myocardial strain and work parameters were impaired, despite the absence of significant clinical symptoms of heart failure. After 6‐month treatment with empagliflozin, the absolute value of LV strain in all directions increased, represented by LV global longitudinal strain (−18.0 ± 1.7% to −19.2 ± 1.7% [mean ± SD]). The same trend in LV global work efficiency (93 [91–94] % to 94 [93–95] % [median (IQR)]), RV free‐wall longitudinal strain (−24.0 ± 2.7% to −25.0 ± 2.8%), LA reservoir (31 ± 5% to 34 ± 5%) and conduit strain (−14 ± 4% to −16 ± 4%) was also observed. LV mass index (106.9 ± 16.8–103.6 ± 16.4 g/m2) and LV global wasted work (143 [111–185] mmHg% to 108 [88–141] mmHg%) decreased after treatment (P

Published
2024
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6. Synthesis of the poly(acrylic acid-acrylic sodium) bentonite composite and its adsorption of Cd(II)

Author

Xinling You, Cao Jilin, Xueqing Chen, Xiuwu Liu, and Jingzhao Lu

Subjects
021110 strategic, defence & security studies, Renewable Energy, Sustainability and the Environment, General Chemical Engineering, 0211 other engineering and technologies, Langmuir adsorption model, 02 engineering and technology, chemistry.chemical_compound, symbols.namesake, Adsorption, Monomer, 020401 chemical engineering, Polymerization, chemistry, Polymer chemistry, Bentonite, symbols, Copolymer, 0204 chemical engineering, Waste Management and Disposal, Dissolution, Acrylic acid, Nuclear chemistry
Abstract

In order to improve the adsorptive properties of bentonite, a new poly(acrylic acid-acrylic sodium) bentonite composite was prepared by copolymerization reaction. The properties of the bentonite composites were investigated. Based on the amount of acrylic monomers dissolution and Cd2+ ions adsorption as objective functions, the optimal conditions which were determined with single-factor experiments are as follows: the neutralization degree of acrylic acid, the polymerization temperature, the polymerization time, and the mass ratio of bentonite to acrylic acid monomer unneutralized were 20%, 80 °C, 3 h and 8 : 2, respectively. The bentonite composite was characterized by XRD, IR, and SEM. It was indicated the basic structure of bentonite had not been destroyed when the monomers were intercalated into the bentonite interlayers. The synthetic products had excellent adsorption properties to Cd2+ ions, such as the removal rate of Cd2+ ions reached 99.9% for 100 mL solution with initial Cd2+ ions concentration of 50.0 mg/L by adding 0.5 g sample of the bentonite composite, whose removal rate was significantly superior to calcium bentonite and other modified bentonite reported in literatures. The adsorption process to Cd2+ ions was corresponding with the Lagergren secondary adsorption kinetics equation and the Langmuir isotherm equation. © 2016 Curtin University of Technology and John Wiley & Sons, Ltd.

Published
2016

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