A5100357484- Advanced Photocatalysis Techniques
- Drilling and Well Engineering
- Synthetic Organic Chemistry Methods
- Enhanced Oil Recovery Techniques
- Asymmetric Synthesis and Catalysis
- Hydrocarbon exploration and reservoir analysis
- Metalloenzymes and iron-sulfur proteins
- Gas Sensing Nanomaterials and Sensors
- Copper-based nanomaterials and applications
- Metal-Organic Frameworks: Synthesis and Applications
- Electromagnetic wave absorption materials
- Hydraulic Fracturing and Reservoir Analysis
- Petroleum Processing and Analysis
- Metal-Catalyzed Oxygenation Mechanisms
- Burn Injury Management and Outcomes
- ZnO doping and properties
- Corrosion Behavior and Inhibition
- Tunneling and Rock Mechanics
- Synthesis and Catalytic Reactions
- Covalent Organic Framework Applications
- Wound Healing and Treatments
- Hydrogen Storage and Materials
- Coal Properties and Utilization
- Chemical Synthesis and Reactions
- Asymmetric Hydrogenation and Catalysis
Suzhou Municipal Hospital
2024
Nanjing Medical University
2024
Shanxi Medical University
2014-2024
Kunming University of Science and Technology
2024
PetroChina Southwest Oil and Gas Field Company (China)
2022-2024
Bohai University
2024
Xidian University
2024
Jingchu University of Technology
2022-2024
Hebei University
2024
Hebei Agricultural University
2024
Deep, high-temperature carbonate reservoirs, represented by the Chuanzhong-Gaomo Block and Penglai Gas Field, have become important supports for increased storage production in Sichuan Basin. However, acidization to ultrahigh-temperature reservoirs faces several technical challenges, such as fast acid-rock reaction rates, limited acid corrosion distances, high risks of tubular corrosion. In this study, a novel high-temperature-resistant microencapsulated gelling agent GLE-3 was prepared...
Abstract Aiming at the current situation that existing acidizing corrosion inhibitors are difficult to apply in high temperature, concentration acid, and other complex conditions, this article uses nano-SiO 2 as core preferably functional monomers synthesize @octadecylbisimidazoline quaternary ammonium salt (nano-SiO @OBQA). Analytical methods such nuclear magnetic resonance, infrared, scanning electron microscopy were used for characterization. The inhibition performance of N80 steel sheet...
Three new propanedithiolate-type iron–sulfur complexes containing tris(aromatic)phosphine ligands, [{(μ-SCH2)2CH2}Fe2(CO)5L] (L = P(PhOMe-p)3, 1; P(PhMe-p)3, 2; P(PhF-p)3, 3), have been prepared through carbonyl substitution in the presence of Me3NO. The 1–3 were characterized by elemental analysis, IR, 1H, 13C{1H}, and 31P{H} NMR spectra. molecular structures unequivocally determined single crystal X-ray diffraction, which coordinated to Fe resides an apical position pseudo-square-pyramidal...
Introduction Pyrus betulifolia is tolerant to diverse environmental conditions and commonly planted in infertile habitats (such as beaches ridges) conserve arable land for cereal crops. Symbiotic fungi the rhizosphere root endosphere benefit host plants by enhancing their resilience nutritional deficiencies under stressful conditions. However, mechanisms underlying assembly of these symbiotic fungal communities roots P. across different remain poorly understood. Methods 30-year-old were...
This paper is concerned with the formation of bitumen during drilling H oilfield in Iraq. The high viscosity and strong adhesion properties can influence operations. Some complex problems include paste screening, drill pipe sticking, which cause huge economic losses. Therefore, it necessary to effectively reduce viscosity. contribution a single subcomponent vary, combined effect different components on remains unclear. Furthermore, mechanism reduction In this study, effects organic solvents...
Abstract The efficient and sustainable development of deep marine carbonate rock reservoirs in the Sichuan Basin has higher technical requirements for reservoir acidizing alteration technology. However, acidification effect was hampered by drawbacks such as uncontrollable rate reservoir, large friction resistance, great acid filtration. A novel heat- shear-resistant nano-silica gelling agent CTG-1 is prepared based on combined with amide compounds. influence different factors filtration...
Fluoroquinolone (FQ) antibiotics, one of the leading environmental pollutants, have ecotoxic effects that can accumulate through ecosystems and harm human health. The determination FQs is still difficult due to complex matrix, many interfering factors, low concentration. Hence, a magnetic microporous organic network (MON) composite denoted as Fe3O4@MON-NH2@CM-β-CD with excellent FQ adsorption performance was prepared by β-CD covalent modification MON. Based on existence π-π packing,...
Aiming at the challenge that environmental protection and high-temperature fluid loss reduction performance of traditional water-based drilling treatment agent are difficult to balance, our studies added psyllium husk as a high-temperature-resistant environmentally friendly filtrate reducer fluid. The composition, physical chemical properties, microstructure characterized. Then, effects after hot rolling different temperatures on rheological properties bentonite-based slurry evaluated....
Since 2007, heterogeneous, high-viscosity active bituminous formations have often occurred during the drilling process in Yadavaran oilfield (Iran), Halfaya (Iraq), and tar sands (Canada). The formation of bitumen exhibits plastic creep properties, its adhesion is strong, so accidents are easily caused, such as adhering vibrating screen, drill pipe sticking, lost circulation, even well abandonment. These complex problems cause huge economic losses. Solvents used to dissolve a feasible...
Vibrational circular dichroism (VCD) method has become robust and reliable alternative for the stereochemical characterization of natural products. In this paper, three new serrulatane-type diterpenoids, euplexaurenes A-C (1-3), a known metabolite, anthogorgiene P (4), were obtained from South China Sea gorgonian Euplexaura sp. GXWZ-05. The absolute configuration C-11 in 1-4, which was difficult to be determined by common means due high conformational flexibility eight-carbon aliphatic chain...
Metal triflate-catalyzed acylation of sulfonamides and direct transacylation N-acylsulfonamides have been investigated. The proceeds efficiently in the presence a catalytic amount Cu(OTf)2 (0.001 equiv) using either carboxylic anhydrides or acyl chlorides as acylating agents. Alternative catalysts suitable for this transformation include Al(OTf)3, Fe(OTf)3, Ga(OTf)3, In(OTf)3, Er(OTf)3. In (0.2 equiv), undergo excess (10 to furnish new through exchange N-acyl groups. In(OTf)3 are similarly...
Recently, the neural network (NN)-based in-loop filters are actively explored and being attempted to integrate in versatile video coding (VVC). Transformer shows better global feature processing capability than convolutional (CNN), which is complimentary CNN that has advantage of local extraction. Since filter operates tree unit (CTU) with fixed relatively small size, it very suitable for introducing into VVC. In this paper, we propose an NN-based VVC using Resblock Transformer, named RTNN,...
Agrobacterium tumefaciens can harm various fruit trees, leading to significant economic losses in agricultural production. It is urgent develop new pesticides effectively treat this bacterial disease. In study, four sesquiterpene derivatives, trichoderenes A−D ( 1 – 4 ), along with six known compounds 5 10 were obtained from the marine-derived fungus Trichoderma effusum . The structures of elucidated by extensive spectroscopic analyses, and calculated ECD, ORD, NMR methods. Structurally,...