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Magnetic Properties of Ferromagnetic Double Layers with Ferrimagnetic Interlayer Coupling at Zero Temperature

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Communications in Theoretical Physics 2009年第2期51卷 349-352页

作者： JIANG Wei ZHU cheng-bo wang Wei ZHANG Fan College of Sciences Shenyang University of Technology Shenyang 110023 China

Spin-wave theory is used to study magnetic properties of ferromagnetic double layers with a ferrimagnetic interlayer coupling at zero temperature. The spin-wave spectra and four sublattices magnetizations and internal energy are calculated by employing retarded Green function technique. The sublattice magnetizations at ground state are smaller than their classical values, owing to the zero-point quantum fluctuations of the spins.

关键词： spin-wave theory ferromagnetic double layers zero-point quantum fluctuation ferrimagnetic interlay coupling

Effect of modified carrier fluoride on the performance of Ni–Mo/Al2O3 catalyst for thioetherification

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Petroleum Science 2020年第3期17卷 849-857页

作者： Zhao Han Zhuang Ma cheng-bo wang Chun-Yu He Ming Ke Qing-Zhe Jiang Zhao-Zheng Song College of Science China University of PetroleumBeijing 102249China PetroChina Beijing Marketing Company Beijing 100101China

An alumina support was modified by fluorine via impregnation to investigate the effect of fluoride content on the reactivity of Ni–Mo/Al2O3 *** catalyst was characterized by X-ray diffraction,N2 adsorption–desorption(Brunauer–Emmett–Teller)isotherms,temperature-programmed desorption of ammonia,X-ray photoelectron spectroscopy and high-resolution transmission electron *** etherification performance of the catalyst was studied using a fixed-bed *** results show that increasing fluoride content increases the pore volume and pore size but reduces the specific surface *** addition,the degree of sulfidation of Ni first increases and then *** amounts of strong acid and total acid also increase with increasing fluoride *** evaluation of the catalyst reveals that the fluoride content has a minor effect on the thioetherification performance of the catalyst;however,an optimum fluoride content,which was determined to be 0.2%,can ensure lower olefin saturation and an efficient diene selective hydrogenation.

关键词： Fluorine Thioetherification Fluorinated ammonia Selective hydrogenation NiMo/y-Al2O3

Alleviation of ischemia/reperfusion injury in ob/ob mice by inhibiting UCP-2 expression in fatty liver

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World Journal of Gastroenterology 2008年第4期14卷 590-594页

作者： Chi-Dan Wan Chun-You wang Tao Liu Rui cheng Hong-bo wang Department of General Surgery Union HospitalTongji Medical College Huazhong University of Science andTechnology Wuhan 430022 Hubei Province China

AIM： To investigate the protective effect of target suppression of uncoupling protein-2 （UCP-2） on ischemia/ reperfusion （I/R） injury in fatty liver in ob/ob mice. METHODS： Plasmids suppressing UCP-2 expression were constructed, and transfected into fatty liver cells cultured in vitro and the ob/ob mouse I/R injury model. Serum tumor necrosis factor （TNF）-α levels, UCP-2 mRNA expression, alanine aminotransferase （ALT） levels in ob/ob mice were tested, and the pathological changes in fatty liver were observed in experimental and control groups. RESULTS： In ob/ob mouse I/R models, serum TNF-α levels were significantly higher than in normal controls. After the plasmids were transfected into the cultured cells and animal models, expression of UCP-2 rnRNA was significantly reduced as compared with that in the control group （2^1.56± 0.15 vs 2^-0.45± 0.15, p 〈 0.05）. In ob/ob mouse models, in which expression of UCP-2 was suppressed, serum ALT levels were significantly lower than those of other groups, and pathological analysis revealed that injury of liver tissues was significantly alleviated. CONCLUSION： The target suppression of UCP-2 expression in fatty liver can alleviate the I/R injury in the ob/ob mice.

关键词： ob/ob mice Fatty liver Uncoupling protein-2 Ischemia/reperfusion injury

粉煤灰提取高附加值有价元素的技术现状及进展

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无机盐工业 2017年第2期49卷 1-4页

作者：程芳琴王波成怀刚山西大学资源与环境工程研究所国家环境保护煤炭废弃物资源化高效利用技术重点实验室山西太原030006

粉煤灰作为一种潜在的矿产资源对于资源保护、经济发展及环境保护等具有深远的意义,但其关键在于如何实现粉煤灰中硅、铝及其他有价元素的高附加值利用。对粉煤灰中提取有价元素的技术进展做了着重介绍,重点分析了各种技术路线存在的难... 详细信息

粉煤灰作为一种潜在的矿产资源对于资源保护、经济发展及环境保护等具有深远的意义,但其关键在于如何实现粉煤灰中硅、铝及其他有价元素的高附加值利用。对粉煤灰中提取有价元素的技术进展做了着重介绍,重点分析了各种技术路线存在的难点、解决对策以及粉煤灰精细化利用的方向。通过对国内外粉煤灰提取有价元素的研究和产业化的对比分析,认为粉煤灰资源开发利用前景十分广阔,粉煤灰的开发利用需要形成科学合理的工艺路线。建议在提取氧化铝和氧化硅的基础上,大力开发从粉煤灰中提取微量有价元素的技术路线,逐步提高粉煤灰中镓、锗、锂、钒、镍等稀散金属和能源金属元素的利用能力。

关键词：粉煤灰有价元素技术现状研究进展

Root-specific overexpression of NH4+ transporter gene AtAMT1;1 in Arabidopsis

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Root-specific overexpression of NH4+ transporter gene AtAMT1...

Human-induced pluripotent stem cell-derived neural stem cell exosomes improve blood-brain barrier function after intracerebral hemorrhage by activating astrocytes via PI3K/AKT/MCP-1 axis

2004中国植物生理生态学学术研讨会

作者： LI Ye cheng bo ZHANG Wentao wang Ningning (Department of Plant Biology and Ecology, Nankai University, Tianjin, 300071)

＜正＞ Nitrogen availability represents a limiting factor in plant growth and crop production. In most soils, NH4+ and NO3- are the predominant sources of N that are available for plant nutrition. Although the average NH4+ concentrations of soils are often 10-1000 times lower than those of NO3-1, the difference in soil concentrations does not necessarily reflect the uptake ratio of each N source. Most plants preferentially take up NH4+ when both forms are present.A first step in improving plant N use efficiency would be to address the primary acquisition process occurring at the root/soil interface. Genes encoding NO3- transporters, NRT1 and NRT2 and NH4+ transporters,

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Neural Regeneration Research 2025年第2期20卷 518-532页

作者： Conglin wang Fangyuan cheng Zhaoli Han bo Yan Pan Liao Zhenyu Yin Xintong Ge Dai Li Rongrong Zhong Qiang Liu Fanglian Chen Ping Lei Department of Geriatrics Tianjin Medical University General HospitalTianjinChina School of Medicine Nankai UniversityTianjinChina Tianjin Neurological Institute TianjinChina

Cerebral edema caused by blood-brain barrier injury after intracerebral hemorrhage is an important factor leading to poor ***-induced pluripotent stem cell-derived neural stem cell exosomes(hiPSC-NSC-Exos)have shown potential for brain injury repair in central nervous system *** this study,we explored the impact of hiPSC-NSC-Exos on blood-brain barrier preservation and the underlying *** results indicated that intranasal delivery of hiPSC-NSC-Exos mitigated neurological deficits,enhanced blood-brain barrier integrity,and reduced leukocyte infiltration in a mouse model of intracerebral ***,hiPSC-NSC-Exos decreased immune cell infiltration,activated astrocytes,and decreased the secretion of inflammatory cytokines like monocyte chemoattractant protein-1,macrophage inflammatory protein-1α,and tumor necrosis factor-αpost-intracerebral hemorrhage,thereby improving the inflammatory *** sequencing indicated that hiPSC-NSC-Exo activated the PI3K/AKT signaling pathway in astrocytes and decreased monocyte chemoattractant protein-1 secretion,thereby improving blood-brain barrier *** with the PI3K/AKT inhibitor LY294002 or the monocyte chemoattractant protein-1 neutralizing agent C1142 abolished these *** summary,our findings suggest that hiPSC-NSC-Exos maintains blood-brain barrier integrity,in part by downregulating monocyte chemoattractant protein-1 secretion through activation of the PI3K/AKT signaling pathway in astrocytes.

关键词： AKT astrocyte blood-brain barrier cerebral edema exosomes human-induced pluripotent stem cells intracerebral hemorrhage neural stem cells neuroinflammation PI3K

Moment Redistribution Effect of the Continuous Glass Fiber Reinforced Polymer-Concrete Composite Slabs Based on Static Loading Experiment

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Structural Durability & Health Monitoring 2025年第1期19卷 105-123页

作者： Zhao-Jun Zhang Wen-Wei wang Jing-Shui Zhen bo-cheng Li De-cheng Cai Yang-Yang Du Hui Huang Offshore Oil Engineering Co.Ltd. Tianjin300461China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China

This study aimed to investigate the moment redistribution in continuous glass fiber reinforced polymer(GFRP)-concrete composite slabs caused by concrete cracking and steel bar yielding in the negative bending moment *** experimental bending moment redistribution test was conducted on continuous GFRP-concrete composite slabs,and a calculation method based on the conjugate beam method was *** composite slabs were formed by combining GFRP profiles with a concrete layer and supported on steel beams to create two-span continuous composite slab *** methods,epoxy resin bonding,and stud connection,were used to connect the composite slabs with the steel *** experimental findings showed that the specimen connected with epoxy resin exhibited two moments redistribution phenomena during the loading process:concrete cracking and steel bar yielding at the internal *** contrast,the composite slab connected with steel beams by studs exhibited only one-moment redistribution phenomenon throughout the loading *** the concrete at the internal support cracked,the bending moment decreased in the internal support section and increased in the midspan *** the steel bars yielded,the bending moment further decreased in the internal support section and increased in the mid-span *** GFRP profiles do not experience cracking,there was no significant decrease in the bending moment of the mid-span *** test specimens experienced compressive failure of concrete at the mid-span *** results showed good agreement between the calculated and experimental values of bending moments in the mid-span section and internal support *** proposed model can effectively predict the moment redistribution behavior of continuous GFRP-concrete composite slabs.

关键词： Moment redistribution GFRP-concrete composite slabs bending moment experimental study analysis model

Unraveling the impacts of intermolecular interaction on morphology evolution for highly efficient organic solar cells and modules

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Science China Chemistry 2025年第01期 264-272页

作者： Xueqing Ma Yingying cheng Yuqiang Liu Xinming Zheng Guangliu Ran Hongxiang Li Xinyue Cui Andong Zhang Wenkai Zhang Pei cheng Wenchao Huang Zhishan bo Beijing Key Laboratory of Energy Conversion and Storage Materials College of Chemistry Beijing Normal University College of Textiles and Clothing State Key Laboratory of Bio-fibers and Eco-textiles Qingdao University Key State Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of Technology Department of Physics and Applied Optics Beijing Area Major Laboratory Center for Advanced Quantum Studies Beijing Normal University State Key Laboratory of Polymer Materials Engineering College of Polymer Science and Engineering Sichuan University

Understanding the effect of intermolecular interaction on the growth dynamic of active layers is critical for advancing organic solar cells(OSCs). However, the diverse structure of donors and acceptors makes the research challenging. Additives with customizable structures and properties could simplify this complexity. Herein, we meticulously tailor two additives of 3,4-ethylenedioxythiophene(EDOT) and 2,5-dibromo-3,4-ethylenedioxythiophene(DBEDOT), possessing distinct intermolecular interaction features to elaborate the inherent relationship. It is found that varied interaction strengths can alter film formation processes. The enhanced intermolecular interaction between the DBEDOT and non-fullerene acceptor BTP-e C9-4F results in pre-aggregation and longer crystallization duration of BTP-e C9-4F, facilitating the formation of films with compact molecular packing and decent phase separation. Thus, exciton dissociation and charge transport become more efficient. Finally, devices processed with DBEDOT exhibit a remarkable power conversion efficiency of 19.35% in small-area OSCs and 14.11% in bladecoated 5 cm × 5 cm organic solar mini-modules. Especially, OSCs can maintain 80% of their initial efficiency after continuous annealing at 85 °C for over 2,100 h.

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Primary parenchymal squamous cell carcinoma of the kidney:A case report

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World Journal of Clinical Cases 2025年第4期13卷 34-40页

作者： Zhi-Hui Zheng bo Shao Chao-Min Xu Ke wang Jia-Zhu Wen Li-Kang Luo Jia-cheng Guan Department of Ultrasound The Second People’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina Department of Radiology Shulan(Quzhou)HospitalQuzhou 324000Zhejiang ProvinceChina Department of Radiology The Second People’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina Department of Pathology The Second people’s Hospital of QuzhouQuzhou 324000Zhejiang ProvinceChina

BACKGROUND Primary squamous cell carcinoma(SCC)of the renal parenchyma is extremely rare,with only nine cases *** SUMMARY This study reports a 51-year-old man with primary SCC of the renal *** patient was admitted with recurrent dull pain and discomfort in the right lumbar region,which had worsened over 2 weeks,accompanied by painful gross *** antigen(SCCA)levels were elevated,and imaging revealed a renal mass with associated *** patient underwent laparoscopic unilateral nephrectomy and lymph node *** pathology confirmed highly differentiated SCC with necrosis in the right renal parenchyma,with negative renal pelvis and *** pathological stage was *** months after surgery,the tumor recurred with involvement of the liver,right psoas major muscle,and inferior vena *** patient refused chemotherapy and succumbed to the disease 6 months postoperatively due to disease *** We report a case of primary SCC of the renal parenchyma,a rare renal *** clinical symptoms,laboratory tests,and imaging findings are nonspecific,making accurate and timely diagnosis *** to the literature,for patients with renal calculi accompanied by a renal mass,elevated serum SCCA levels,and magnetic resonance imaging showing cystic or cystic-solid masses within the kidney with pseudocapsules and heterogeneous mild enhancement,the possibility of this disease should be considered.

关键词： Renal tumor Renal parenchyma Squamous cell carcinoma Renal calculi Computed tomography Case report