Results 1 to 10 of about 355,681 (311)

Synthesis of Phosphotungstic acid/S-doped g-C3N4 Photocatalyst and Its Photocatalytic Degradation of Organic Pollutants in Aqueous Solutions

open access: yesMedžiagotyra, 2022
The S-doped g-C3N4 (SCN) was prepared by thermal condensation method using thiourea as a precursor, and then the phosphotungstic acid (PTA)/SCN composite photocatalytic material was prepared by reflux adsorption method.
Pengxi LI   +4 more
doaj   +1 more source

Investigation on the mechanism of structural reconstruction of biochars derived from lignin and cellulose during graphitization under high temperature

open access: yesBiochar, 2023
The structural reconstruction mechanism of lignin and cellulose-derived biochars during direct graphitization under ultra-high temperatures was intensively investigated.
Chao Chen   +10 more
doaj   +1 more source

Quantitative measurement of chain crosslink of poly(butylene succinate-co-terephthalate)(PBST) mulch film during degradation above the soil in cotton growth

open access: yesResults in Materials, 2023
Degradation of poly (butylene succinate-co-terephthalate) (PBST) mulch film in the vast cotton field in the dry and windy plain has been studied. The films within 3 months' use which were above the soil and far away from the plant were selected collected
Cui Zheng   +10 more
doaj   +1 more source

Effects of Prepolymerization, Temperature, and Hydrogen Concentration on Kinetics of Propylene Bulk Polymerization Using a Commercial Ziegler-Natta Catalyst

open access: yesAdvances in Polymer Technology, 2022
The effects of prepolymerization, temperature, and hydrogen concentration on propylene bulk polymerization with a commercial Ziegler-Natta catalyst were investigated, and the apparent polymerization rate constants were estimated by varying reaction ...
Huiyue Liu   +4 more
doaj   +1 more source

Suspension System Control Based on Type-2 Fuzzy Sliding Mode Technique

open access: yesComplexity, 2022
This paper presents a new method of intelligent control for vehicle suspension. First, the suspension system is modeled with all the details, and then based on the obtained model, the sliding mode control is designed for it. The controller parameters and
Zheng Wang   +5 more
doaj   +1 more source

Evaluation of the risk of fracture in type 2 diabetes mellitus patients with incretins: an updated meta-analysis

open access: yesEndokrynologia Polska, 2021
INTRODUCTION: The effect of incretins including dipeptidyl peptidase 4 inhibitors (DPP4-Is) and glucagon-like peptide1 receptor agonists (GLP1-ras) in the treatment of type 2 diabetes increasing the risk of fracture remains controversial.
Qing-xin Kong   +5 more
doaj   +1 more source

Synthesis and antibacterial activity of benzimidazole amides based on computer-aided technology [PDF]

open access: yesBIO Web of Conferences
Benzimidazole compounds are benzoheterocyclic compounds containing 2 nitrogen atoms. These compounds not only have broad-spectrum biological activities such as antihypertensive, antiparasitic, antibacterial and antifungal, but also play a great role in ...
Liu Liya   +4 more
doaj   +1 more source

Synthesis, structure analysis and antibacterial activity of N-[5-dehydroabietyl-[1,3,4]thiadiazol-2-yl]-aromatic amide derivatives

open access: yesJournal of Saudi Chemical Society, 2017
A series of N-[5-dehydroabietyl-[1,3,4]thiadiazol-2-yl]-aromatic amide derivatives were synthesized from dehydroabietic acid. Their structures were characterized by IR, 1H NMR, MS, elemental analysis and single crystal X-ray diffraction.
YanJie Cui   +5 more
doaj   +1 more source

Mechano-chemical Effects of One-dimensional Explosive Shock Treatment on the Characteristics of Si3N4 [Translated]†

open access: yesKONA Powder and Particle Journal, 2014
Direct consolidation of α- and β-Si3N4 is conducted by the use of one-dimensional explosive shock treatment. The effect of shock pressure, phase and particle size distribution of a sample powder on the characteristics of the explosively shocked compact ...
Fumikazu Ikazaki   +6 more
doaj   +1 more source

Positively charged nanofiltration membranes for efficient Mg2+/Li+ separation from high Mg2+/Li+ ratio brine

open access: yesAdvanced Membranes, 2023
Nanofiltration has gained increasing attention in lithium extraction from salt lake brine with high Mg2+/Li+ ratio. However, conventional nanofiltration membranes with negatively charged surfaces suffer from low Mg2+/Li+ selectivity.
Guoke Zhao   +4 more
doaj   +1 more source

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