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Load reduction sintering for increasing productivity and decreasing fuel consumption

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International Journal of Minerals,Metallurgy and Materials 2013年第2期20卷 131-137页

作者： Hai-bin Zuo Jian-liang Zhang zheng-wen Hu Tian-jun Yang State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing School of Metallurgical and Ecological Engineering University of Science and Technology Beijing

The technical and economical indexes and the physical properties of load reduction sintering processes with the supporting stands of installation at different height levels （300, 350, and 400 mm）： in a sintering bed were studied under the same conditions of raw material, bed height, and sintering parameters. Sintering pot tests with different bed heights and fuel ratios of the mixture with or without supporting stands were performed to decrease the fuel consumption. The airflow rate through the sintering bed was measured with an anemoscope fixed on the bed surface to reveal the effects of supporting stands. The utilization of load reduction sintering can improve the permeability of the sintering bed, and the airflow rate through the sintering bed is increased. When the stand height is half of the sintering bed, the productivity increases by 27.9%, and the drum index slightly decreases. Keeping at the same productivity level with normal sintering, the utilization of load reduction sintering can decrease the solid fuel consumption by 9.2%.

关键词： ore sintering permeability productivity fuel consumption

室间隔缺损伴主动脉瓣脱垂超声心动图诊断分析

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医学影像学杂志 2006年第7期16卷 711-712页

作者：朱文军许月珍全丽娟浙江省嘉兴市第一医院浙江嘉兴314000

目的:探讨室间隔缺损伴主动脉瓣脱垂超声心动图表现。方法:12例室间隔缺损伴主动脉瓣脱垂患儿分别用二维和彩色多普勒超声观察室间隔缺损部位、大小和主动脉瓣脱垂情况,分析两者关系。结果:12例室间隔缺损伴主动脉瓣脱垂均为右冠瓣脱垂... 详细信息

目的:探讨室间隔缺损伴主动脉瓣脱垂超声心动图表现。方法:12例室间隔缺损伴主动脉瓣脱垂患儿分别用二维和彩色多普勒超声观察室间隔缺损部位、大小和主动脉瓣脱垂情况,分析两者关系。结果:12例室间隔缺损伴主动脉瓣脱垂均为右冠瓣脱垂,干下型室间隔缺损占了5%(9/12),超声诊断准确率92.3%。结论:超声心动图对室间隔缺损伴主动脉瓣脱垂的诊断具有重要价值。

关键词：室间隔缺损主动脉瓣脱垂超声检查

Characteristics of structural loess strength and preliminary framework for joint strength formula

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Water Science and Engineering 2014年第3期7卷 319-330页

作者： Rong-jian LI jun-ding LIU Rui YAN wen zheng Sheng-jun SHAO Institute of Geotechnical Engineering Xi'an University of Technology Open Research Laboratory of Geotechnical Engineering Ministry of Land and ResourcesChang'an University

The strength of structural loess consists of the shear strength and tensile strength. In this study, the stress path, the failure envelope of principal stress （ Kf line）, and the strength failure envelope of structurally intact loess and remolded loess were analyzed through three kinds of tests： the tensile strength test, the uniaxial compressive strength test, and the conventional triaxial shear strength test. Then, in order to describe the tensile strength and shear strength of structural loess comprehensively and reasonably, a joint strength formula for structural loess was established. This formula comprehensively considers tensile and shear properties. Studies have shown that the tensile strength exhibits a decreasing trend with increasing water content. When the water content is constant, the tensile strength of the structurally intact soil is greater than that ofremolded soil. In the studies, no loss of the originally cured cohesion in the structurally intact soil samples was observed, given that the soil samples did not experience loading disturbance during the uniaxial compressive strength test, meaning there is a high initial structural strength. The results of the conventional triaxial shear strength test show that the water content is correlated with the strength of the structural loess. When the water content is low, the structural properties are strong, and when the water content is high, the structural properties are weak, which means that the water content and the ambient pressure have significant effects on the stress-strain relationship of structural loess. The established joint strength formula of structural loess effectively avoids overestimating the role of soil tensile strength in the traditional theory of Mohr-Coulomb strength.

关键词： structurally intact loess, remolded loess, tensile strength shear strength stress path failure envelope of principal stress ( Kf line) strength failure envelope joint strength formula

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磷石膏固废资源化利用技术及应用前景

现代化工 2025年第1期45卷 34-41页

作者：桑安曹俊雅张莉昕毛文政张广积湖北三峡实验室湖北宜昌443008 中国矿业大学(北京)化学与环境工程学院北京100083 中国科学院过程工程研究所石油化工分子转化与反应工程全国重点实验室中国科学院绿色过程与工程重点实验室北京100190

介绍了磷石膏所含杂质及其对环境带来的危害,并阐述了磷石膏的几种预处理方法。依托VOS viewer可视化软件,对磷石膏资源化利用现状进行了分析,利用方向主要集中在农业、建筑材料、化工原料等方面。最后展望了未来磷石膏利用的技术创新方... 详细信息

介绍了磷石膏所含杂质及其对环境带来的危害,并阐述了磷石膏的几种预处理方法。依托VOS viewer可视化软件,对磷石膏资源化利用现状进行了分析,利用方向主要集中在农业、建筑材料、化工原料等方面。最后展望了未来磷石膏利用的技术创新方向,包括环境功能材料的制备和路基磷石膏基材料的开发等。

关键词：磷石膏堆存预处理资源化利用

Effects of the momentum dependence of nuclear symmetry potential on pion observables in Sn+Sn collisions at 270 MeV/nucleon

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Nuclear Science and Techniques 2022年第12期33卷 147-158页

作者： Gao‑Feng Wei Xin Huang Qi‑jun Zhi Ai‑jun Dong Chang‑Gen Peng zheng‑wen Long School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550025China Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal UniversityGuiyang 550025China Guizhou Provincial Key Laboratory of Public Big Data Guizhou UniversityGuiyang 550025China College of Physics Guizhou UniversityGuiyang 550025China

Within a transport model,we investigated the effects of the momentum dependence of the nuclear symmetry potential on the pion observables in central Sn+Sn collisions at 270 MeV/*** this end,the quantity U^(∞)_(sym)(ρ_(0))(i.e.,the value of the nuclear symmetry potential at the saturation densityρ_(0) and infinitely large nucleon momentum)was used to characterize the momentum dependence of the nuclear symmetry *** a certain L(i.e.,the slope of the nuclear symmetry energy at(ρ_(0))),the characteristic parameter U^(∞)_(sym)(ρ_(0))of the symmetry potential significantly affects the production of−and+and their pion ***,by comparing the charged pion yields,pion ratios,and spectral pion ratios of the theoretical simulations for the reactions ^(108) Sn+^(112) Sn and ^(132)Sn+^(124)Sn with the corresponding data in the SRIT experiments,we found that our results favor a constraint on U^(∞)_(sym)(ρ_(0))(i.e.,−160_(−9)^(+18) MeV),and L is also suggested within a range of 62.7 MeV

关键词： Nuclear symmetry potential Momentum dependence Symmetry energy

Deciphering the molecular mechanisms of Simiaowan in the treatment of hyperuricemia: in vivo and in silico approaches

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Traditional Medicine Research 2025年第2期10卷 37-54页

作者： Yong-Chang Zeng jun-Hong Wu Dan-Dan Xu Kang He Chang-Qing Liu Li-Fei Song zheng-Zhi Wu Qian-Qian Jiang Shao-Yu Liang Department of Neurology The First Affiliated Hospital of Shenzhen UniversityShenzhen 518020China Pharmaceutical Department The Affiliated TCM Hospital of Guangzhou Medical UniversityGuangzhou 510000China School of Pharmacy Guizhou University of Traditional Chinese MedicineGuiyang 550025China Guangzhou Zeli Medical Technology Co. Ltd.Guangzhou 510700China

Background:Simiaowan(SMW),a well-known traditional Chinese medicine,has been employed to treat hyperuricemia(HUA)and gout for ***,the bioactive components and underlying mechanisms have not been *** objective of this study was to identify the active components and potential mechanisms of SMW by integrating pharmacological experimentation,serum pharmacochemistry,network pharmacology and molecular ***:HUA rats modelling by high-fat/high-sugar diet and potassium oxonate/adenine oral administration were used to evaluate the pharmacodynamic effects of ***-Q-Exactive-MS/MS was employed to detect the bioactive components present in SMW-containing *** pharmacology and molecular docking were utilized to elucidate the potential targets and underlying ***:SMW effectively ameliorated HUA rats via the inhibition of uric acid(UA)production,promotion of UA excretion,improvement of lipid and glucose metabolic abnormalities,antioxidant,anti-inflammatory and anti-insulin resistance effects.A total of 73 compounds detected in SMW-containing serum were identified as potential active components,with alkaloids,flavonoids,organic acids,and terpenoids emerging as the primary active *** 203 corresponding targets were obtained as SMW anti-HUA/gout targets,which mainly participated in apoptosis,insulin resistance,TNF,PI3K-Akt,HIF-1,NF-κB,MAPK,IL-17 and TLR signaling *** docking indicated that active compounds(***,phellodendrine,quercetin,formononetin,ferulic acid)had superior binding abilities to the key targets(*** carrier family 22 member 12(URAT1),solute carrier family 22 member 6(OAT1),ATP-binding cassette sub-family G member 2(ABCG2),solute carrier family 2,facilitated glucose transporter member 9(GLUT9),xanthine dehydrogenase/oxidase(XDH),transcription factor p65(RELA),toll-like receptor 4(TLR4),prostaglandin G/H synthase 2(PTGS2),caspase-3(CASP3),insulin(INS)).Conclusion:S

关键词： hyperuricemia network pharmacology serum pharmacochemistry Simiaowan UPLC-Q-Exactive-MS/MS

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21世纪中国体育科技的发展与对策

韶关学院学报 2004年第6期25卷 116-118页

作者：钱文军郑文玲南阳师范学院科研处河南南阳473061 南阳师范学院体育系河南南阳473061

采用文献资料等研究方法,对我国体育科技发展现状进行了研究,分析存在的问题,提出了相应的对策.

关键词：体育科技发展对策

富氢水对肉鸡生长性能、抗氧化能力、肉品质和盲肠微生物的影响

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南京农业大学学报 2025年第1期48卷 180-189页

作者：朱赫王亚梅胡恒姚文郑卫江南京农业大学动物科技学院江苏南京210095

[目的]本试验旨在研究饮用富氢水对肉鸡生长性能、抗氧化能力、肉品质和盲肠微生物群影响。[方法]选取120只1日龄雄性AA肉鸡,随机分成2组(每组6个重复,每个重复10只鸡),对照组饮用自来水,富氢水组饮用富氢水,试验期为42 d。[结果]虽然... 详细信息

[目的]本试验旨在研究饮用富氢水对肉鸡生长性能、抗氧化能力、肉品质和盲肠微生物群影响。[方法]选取120只1日龄雄性AA肉鸡,随机分成2组(每组6个重复,每个重复10只鸡),对照组饮用自来水,富氢水组饮用富氢水,试验期为42 d。[结果]虽然富氢水对肉鸡生长性能无显著影响,但可显著提高血清总抗氧化能力、超氧化物歧化酶活性和肝脏过氧化氢酶活性(P<0.05),显著降低肝脏活性氧和丙二醛含量(P<0.05)。在鸡胸肉的肉品质方面,富氢水组剪切力显著低于对照组(P<0.05);此外,富氢水组鸡胸肉中亮氨酸、赖氨酸及必需氨基酸比例显著高于对照组(P<0.05),十一烷酸比例显著低于对照组(P<0.05),棕榈油酸、油酸、芥酸、γ-亚麻油酸、α-亚麻油酸及单不饱和脂肪酸比例显著高于对照组(P<0.05)。与对照组相比,富氢水可显著提高盲肠食糜中产丁酸盐菌(Mediterraneibacter、Kineothrix、Roseburia)和寡养单胞菌属(Stenotrophomonas)相对丰度(P<0.05),而显著降低Massilimaliae和共生小杆菌属(Symbiobacterium)相对丰度(P<0.05)。[结论]富氢水对肉鸡生长性能无显著影响,但对血清和肝脏的部分抗氧化指标起到积极作用,还可提高盲肠食糜中部分产丁酸盐菌群的丰度,并通过改善氨基酸与脂肪酸组成调节肉鸡鸡胸肉品质。

关键词：富氢水肉鸡抗氧化能力肉品质盲肠微生物

Microstructure and high-temperature wear properties of in situ TiC composite coatings by plasma transferred arc surface alloying on gray cast iron

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International Journal of Minerals,Metallurgy and Materials 2015年第12期22卷 1273-1282页

作者： Hang Zhao Jian-jun Li Zhi-zhen zheng Ai-hua Wang Qi-wen Huang Da-wen Zeng State Key Laboratory of Material Processing and Die & Mould Technology Huazhong University of Science & Technology

In this work, an in situ synthesized TiC-reinforced metal matrix composite （MMC） coating of approximately 350-400μm thickness was fabricated on a gray cast iron （GCI） substrate by plasma transferred arc （PTA） surface alloying of Ti-Fe alloy powder. Microhard- ness tests showed that the surface hardness increased approximately four-fold after the alloying treatment. The microstructure of the MMC coating was mainly composed of residual austenite, acicular martensite, and eutectic ledeburite. Scanning electron microscopy （SEM） and X-ray diffraction analyzes revealed that the in situ TiC particles, which were formed by direct reaction of Ti with carbon originally contained in the GCI, was uniformly distributed at the boundary of residual anstenite in the alloying zone. Pin-on-disc high-temperature wear tests were performed on samples both with and without the MMC coating at room temperature and at elevated temperatures （473 K and 623 K）, and the wear behavior and mechanism were investigated. The results showed that, after the PTA alloying treatment, the wear resistance of the sam- ples improved significantly. On the basis of our analysis of the composite coatings by optical microscopy, SEM with energy-dispersive X-ray spectroscopy, and microhardness measurements, we attributed this improvement of wear resistance to the transformation of the microstruc- ture and to the presence of TiC particles.

关键词： gray cast iron composite coatings particle-reinforced composites titanium carbide surface alloying microstructure wear