Search results for: Ping Du

Items from 1 to 20 out of 330 results

article

Preconditioned weighted full orthogonalization method for solving singular linear systems from PageRank problems

Zhao‐Li Shen, Bruno Carpentieri, Chun Wen, Jian‐Jun Wang, more

Numerical Linear Algebra with Applications > 31 > 3 > n/a - n/a

The PageRank model, which was first proposed by Google for its web search engine application, has since become a popular computational tool in a wide range of scientific fields, including chemistry, bioinformatics, neuroscience, bibliometrics, social networks, and others. PageRank calculations necessitate the use of fast computational techniques with low algorithmic and memory complexity. In recent...

article

Preparation and Characterization of Porous Carbon/RDX Nanocomposite Energetic Materials

Ju Jiang, Jin-Xiao Su, Zhi-Tao Liu, Ping Du, more

Central European Journal of Energetic Materials > 2023 > Vol. 20, no. 3 > 284--301

A novel energetic material was fabricated by filling porous carbon with 1,3,5-trinitro-1,3,5-triazinane (RDX) via the ultrasonic stirring method. Characterization (TEM, BET, XRD, FTIR, etc.) was performed to determine the micromorphology, crystal structure, and specific surface area. TEM images indicated that the RDX particles were homogeneously distributed in the channels of the porous carbon, FTIR...

article

Mechanism in chlorine‐enhanced Pd catalyst for H₂O₂ in situ synthesis in electro‐Fenton system

Linhui Lu, Qingli Shu, Guiru Zhang, Qi Zhang, more

AIChE Journal > 68 > 10 > n/a - n/a

Palladium‐based catalysts have been widely employed in the electro‐Fenton process for in situ generation of H₂O₂. However, the process is still far from being practical on a large scale. In this work, a series of Cl_xFePd/γ‐Al₂O₃/Al catalysts were prepared by a three‐step‐impregnation method. They exhibited excellent activity in H₂O₂ in situ synthesis and high efficiency in phenol degradation. The...

article

FVE promotes RNA‐directed DNA methylation by facilitating the association of RNA polymerase V with chromatin

Jin‐Xing Zhou, Ping Du, Zhang‐Wei Liu, Chao Feng, more

The Plant Journal > 107 > 2 > 467 - 479

Association of RNA polymerase V (Pol V) with chromatin is a critical step for RNA‐ directed DNA methylation (RdDM) in plants. Although the methylated DNA‐binding proteins SUVH2 and SUVH9 and the chromatin remodeler‐containing complex DRD1‐DMS3‐RDM1 are known to be required for the association of Pol V with chromatin, the molecular mechanisms underlying the association of Pol V with different chromatin...

article

An extended aggregate basis function method for composite structure with periodic array

Sheng Zhang, Ping Du

Microwave and Optical Technology Letters > 63 > 10 > 2576 - 2580

The extended aggregate basis function method (EABFM) is proposed to analyze the electromagnetic scattering by the composite structure with periodic array. The generation of the impedance matrix in the EABFM is still time consuming. The fast dipole method (FDM) and the equivalent dipole‐moment method (EDM) are applied to accelerate the fill‐in of the matrix. Several numerical examples are performed...

article

Effects of Different Additives on Energy Release of SF‐3 Double‐Based Propellant System Containing (Mg(BH_x)_y)

Xiaohan Liu, Xiaoan Wei, Ping Du, Zeshan Wang

Propellants, Explosives, Pyrotechnics > 46 > 6 > 981 - 985

In order to study the effects of different additives on the energy release of an SF‐3 double‐base propellant system comprising a boron‐containing hydrogen‐storage‐alloy (Mg(BH_x)_y), curves of heat generation versus the temperature and curves of adiabatic decomposition temperature versus the time, of this system with copper oxide (CuO) or nanometer copper oxide (nano‐CuO) as the additive were obtained...

article

Five‐year follow‐up observation of interventional therapy for lower extremity vascular disease in type 2 diabetes and analysis of risk factors for restenosis

Hai‐Xia Ding, Hong‐Fang Ma, Na Xing, Lin Hou, more

Journal of Diabetes > 13 > 2 > 134 - 142

Background The high incidence of type 2 diabetes, the low rate of compliance, and the complex mechanism of vascular disease caused by diabetes make its complications increase year by year. Our study aimed to investigate the clinical characteristics of lower extremity vascular diseases in type 2 diabetes and evaluate the long‐term efficacy of vascular intervention for these diseases. Methods From...

article

Quality assessment of Moringa seed shells based on fingerprinting using HPLC-DAD

Yangin Zhu, Ping Du, Shaojun Huang, Qinhong Yin, more

Acta Chromatographica > 2020 > Vol. 32, no. 1 > 28--33

A fingerprint analysis method was established for the quality control of Moringa seed shells by high-performance liquid chromatography with diode array detection (HPLC–DAD). The HPLC–DAD separation was performed on a Thermo Hypersil Gold C18 (4.6 mm × 250 mm, 5 μm) column by gradient elution with acetonitrile–water as mobile phase. The fingerprint of Moringa seed shells was established with good precision,...

article

CircWHSC1 promotes ovarian cancer progression by regulating MUC1 and hTERT through sponging miR-145 and miR-1182

Zhi-Hong Zong, Yu-Ping Du, Xue Guan, Shuo Chen, more

Journal of Experimental & Clinical Cancer Research > 2019 > 38 > 1 > 1-10

Background Circular RNAs are key regulators in human cancers, however, there is a lack of studies on circRNAs’ specific functions in ovarian cancer. Methods Our study used qRT-PCR to detect the differentially expressed circRNAs between normal ovaries and ovarian cancer tissues. Cell function experiments were performed to verify the role of overexpression and silence of circWHSC1, including MTT assay,...

article

Quantum Tunneling Mediated Interfacial Synthesis of a Benzofuran Derivative

Tobias Paintner, Jonas Björk, Ping Du, Svetlana Klyatskaya, more

Angewandte Chemie International Edition > 58 > 33 > 11285 - 11290

Reaction pathways involving quantum tunneling of protons are fundamental to chemistry and biology. They are responsible for essential aspects of interstellar synthesis, the degradation and isomerization of compounds, enzymatic activity, and protein dynamics. On‐surface conditions have been demonstrated to open alternative routes for organic synthesis, often with intricate transformations not accessible...

article

Quantum Tunneling Mediated Interfacial Synthesis of a Benzofuran Derivative

Tobias Paintner, Jonas Björk, Ping Du, Svetlana Klyatskaya, more

Angewandte Chemie > 131 > 33 > 11407 - 11412

article

TCF7L2 regulates pancreatic β-cell function through PI3K/AKT signal pathway

Hui-Hui Wu, Yan-Liang Li, Nai-Jia Liu, Zhen Yang, more

Diabetology & Metabolic Syndrome > 2019 > 11 > 1 > 1-9

Background Transcription factor 7-like 2 (TCF7L2), which previously known as TCF-4, is a major form of transcription factor involved in the downstream WNT signaling and exhibits the strongest association to diabetes susceptibility. Although we still do not know mechanistically how TCF7L2 exerts its physiological functions on pancreatic endocrine cells, it had been suggested that TCF7L2 may directly...

article

Metal–Organic Framework (MOF) Hybrid as a Tandem Catalyst for Enhanced Therapy against Hypoxic Tumor Cells

Jintong Liu, Tianrui Liu, Ping Du, Lei Zhang, more

Angewandte Chemie International Edition > 58 > 23 > 7808 - 7812

Encapsulation of active biomolecules and/or nanoparticles in metal–organic frameworks (MOFs) remains a great challenge in biomedical applications. In this work, through a stepwise in situ growth method, a black phosphorus quantum dot (BQ) and catalase were precisely encapsulated into the inner and outer layers of MOFs, respectively. The integrated MOF system as a tandem catalyst could convert H₂O₂...

article

Metal–Organic Framework (MOF) Hybrid as a Tandem Catalyst for Enhanced Therapy against Hypoxic Tumor Cells

Jintong Liu, Tianrui Liu, Ping Du, Lei Zhang, more

Angewandte Chemie > 131 > 23 > 7890 - 7894

article

Comparing the effects and compliance between volume‐assured and pressure support non‐invasive ventilation in patients with chronic respiratory failure

Xu An Huang, Yan Ping Du, Liu Xia Li, Fang Fang Wu, more

The Clinical Respiratory Journal > 13 > 5 > 289 - 298

Introduction Standard bi‐level non‐invasive ventilation with fixed‐level pressure support (PS) delivery may not maintain ventilation during the changes in pulmonary mechanics that occur throughout day and night, so average volume‐assured pressure support (AVAPS) modes that target a preset volume by adjustment of PS may be effective. Objective Our meta‐analysis wants to compare AVAPS and pressure...

article

Failure Analysis of a Four-Way Flange Cracking in a KQ65 Wellhead Christmas Tree

Ji-ming Zhang, Xiqiang Wang, Yanshan Zhu, Ping Du

Journal of Failure Analysis and Prevention > 2019 > 19 > 2 > 394-401

A Christmas tree is a key wellhead device consisting of valves and fittings used for controlling oil and gas well fluid. Generally, various combinations are applied on Christmas tree to meet the requirement of specific working conditions. In present work, fracture of a four-way flange of a KQ65 wellhead Christmas tree was investigated through mechanical properties testing, microstructure characterization...

article

Physical, chemical, and surface charge properties of bauxite residue derived from a combined process

Jie Ren, Juan Chen, Wei Guo, Bin Yang, more

Journal of Central South University > 2019 > 26 > 2 > 373-382

A detailed understanding of the composition, buffering capacity, surface charge property, and metals leaching behavior of bauxite residue is the key to improved management, both in reducing the environmental impact and using the material as an industrial by-product for other applications. In this study, physical, chemical, and surface charge properties of bauxite residue derived from a combined process...

article

Silent spontaneous posterior uterine rupture of a prior caesarean delivery at 36 weeks of gestation

Shao Hui Chen, Xiu Ping Du

BMC Pregnancy and Childbirth > 2019 > 19 > 1 > 1-3

Background In caesarean section patients, the spontaneous rupture of the posterior wall of the uterus is extremely rare, with nonspecific signs and symptoms being present. Perinatal and maternal morbidity and mortality are high. Case presentation A 28-year-old woman at 36 + 6 weeks of gestation presented with mild uterine contractions and developed a sudden abdominal distension. An emergency laparotomy...

article

Wear-resistant coating spraying technique for wear-proofing cover of coke dry quenching furnace

Zhang-fu Yuan, Shan-shan Xie, Xiang-tao Yu, Jian Liu, more

Journal of Iron and Steel Research International > 2019 > 26 > 2 > 123-129

During the operation of a coke dry quenching system of coking plant, wear-proofing cover of the boiler was seriously eroded, and even the ceiling tube of the boiler was worn and torn. Thus, attentions were paid to the research, development and application of the wear-resistant coating spraying technique for wear-proofing cover of the coke dry quenching furnace. The Cr₃C₂–NiCr coatings for wear-proofing...

article

Effect of NQ content on the thermal decomposition of nitroguanidine propellant using isoconversional methods

Zhi-tao Liu, Fen Zhang, Ping Du, Bin Xu

Journal of Thermal Analysis and Calorimetry > 2019 > 137 > 2 > 473-480

The effect of nitroguanidine (NQ) content on thermal decomposition of nitroguanidine propellants was studied using three nitroguanidine propellants with different NQ contents (10%, 30% and 47%) and one double-base propellant. The thermal decomposition was investigated by high-pressure differential scanning calorimetry. Results show that heat flow curves of the four tested formulations all had only...

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INFONA - science communication portal

Search results for: Ping Du

Preconditioned weighted full orthogonalization method for solving singular linear systems from PageRank problems

Preparation and Characterization of Porous Carbon/RDX Nanocomposite Energetic Materials

Mechanism in chlorine‐enhanced Pd catalyst for H₂O₂ in situ synthesis in electro‐Fenton system

FVE promotes RNA‐directed DNA methylation by facilitating the association of RNA polymerase V with chromatin

An extended aggregate basis function method for composite structure with periodic array

Effects of Different Additives on Energy Release of SF‐3 Double‐Based Propellant System Containing (Mg(BH_x)_y)

Five‐year follow‐up observation of interventional therapy for lower extremity vascular disease in type 2 diabetes and analysis of risk factors for restenosis

Quality assessment of Moringa seed shells based on fingerprinting using HPLC-DAD

CircWHSC1 promotes ovarian cancer progression by regulating MUC1 and hTERT through sponging miR-145 and miR-1182

Quantum Tunneling Mediated Interfacial Synthesis of a Benzofuran Derivative

Quantum Tunneling Mediated Interfacial Synthesis of a Benzofuran Derivative

TCF7L2 regulates pancreatic β-cell function through PI3K/AKT signal pathway

Metal–Organic Framework (MOF) Hybrid as a Tandem Catalyst for Enhanced Therapy against Hypoxic Tumor Cells

Metal–Organic Framework (MOF) Hybrid as a Tandem Catalyst for Enhanced Therapy against Hypoxic Tumor Cells

Comparing the effects and compliance between volume‐assured and pressure support non‐invasive ventilation in patients with chronic respiratory failure

Failure Analysis of a Four-Way Flange Cracking in a KQ65 Wellhead Christmas Tree

Physical, chemical, and surface charge properties of bauxite residue derived from a combined process

Silent spontaneous posterior uterine rupture of a prior caesarean delivery at 36 weeks of gestation

Wear-resistant coating spraying technique for wear-proofing cover of coke dry quenching furnace

Effect of NQ content on the thermal decomposition of nitroguanidine propellant using isoconversional methods

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