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Mechanical Design and Research on Process of Air Suction Drawing System of Spunbonded Nonwoven

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Journal of Donghua University(English Edition) 2008年第1期25卷 16-18页

作者：王洪靳向煜吴海波殷保璞唐守信 college of Textiles Donghua University Henan Piao’an High-Tec ltd.co.

The design guideline for the air suction drawing system with auxiliary air was analyzed,a spunbonding nonwoven system named PADHL1-3200 was designed and polypropylene(PP) spunbonded nonwoven fabrics with excellent properties were achieved after many trial *** the other hand,the suction air velocity(VA) was calculated and the influence of VA on the bonding strengh of PP nonwoven fabrics was studied as *** was found that VA is 1.5-2.5 times of the spinning *** the increase of VA,PP fibers become finer and the bonding strength of PP nonwoven fabrics increases as well.

关键词： suction air velocity bonding index spunbond nonwoven

The geomechanical properties of soils treated with nanosilica particles

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第4期15卷 954-969页

作者： Gizem Aksu Tugba Eskisar Asia Prefabrik ltd.co. KemalpasaIzmir35730Turkey Department of Civil Engineering Ege UniversityBornovaIzmir35100Turkey

This study examines the effect of nanosilica(NS)additive to improve the mechanical properties of clay,clayey sand,and *** engineering properties of the soils were investigated through Atterberg limits,compaction,unconfined compression,ultrasonic pulse velocity(UPV),freeze-thaw,and direct shear *** NS content varied from 0%to 0.7%and cement content was 5%and 10%by the dry weight of the *** curing period varied from 7 d to 150 *** consistency,compaction,and strength properties of the soils were affected by the presence of NS and *** optimum NS contents in clay specimens with 5%and 10%cement were 0.5%and 0.7%,*** was 0.7%in sand specimens with both cement ratios,as well as 0.3%and 0.7%in clayey sand specimens with 5%and 10%cement,*** terms of freeze-thaw resistance,clayey sand specimens containing 0.5%NS and 10%cement had the minimum strength *** relationships existed between the ultrasonic pulse velocity(UPV)and the unconfined compressive strength(UCS)of soil specimens having the same curing *** shear strength parameters of the soils also improved with the addition of *** electron microscope(SEM)images demonstrated that cement and NS contributed to the improvement of the soils by producing a denser and more uniform *** was concluded that the minor addition of NS could potentially improve the geomechanical properties of the soils.

关键词： Nanosilica(NS) Atterberg limits compaction Unconfined compressive strength(UCS) Ultrasonic pulse velocity(UPV) Freeze-thaw

An Assembly coastal Building Technique in Port Engineering

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China Ocean Engineering 2009年第2期23卷 379-386页

作者：陈育民刘汉龙陈泽高玉峰 Research Academy of Hohai University Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering Hohai University TongTu Technology Ltd.Co.

The assembly coastal building technique initiated at home and abroad,is for a novel vertical standing harbor *** main concept is the assembling components which can be combined and locked together to form a large *** application and future are discussed for a *** many years of application and tests,the technique has a high stability,a wide range of application,low workload and fast construction *** can be widely applied in future for harbor engineering projects.

关键词： Assembly techniques frame structure open-ended caisson port engineering

Evaluation Standard and Methods of Source Rocks of Tight Oil in the Northern Songliao Basin

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 168-169页

作者： WANG Xue DONG Zhongliang LIU Ting ZHANG Li Exploration and Development Research Institute Daqing Oilfield Company Ltd.Co.

The study of tight oil is one of the key research areas of the Daqing Oilfield in recent two years, and its proportion is growing in the incremental reserves and production. In 2014, the tight oil reserves accounted for 65.5% in the incremental oil reserves of middle-shallow layers in the north of the Songliao Basin, thus the study of tight oil has received more and more attention and becomes one of the most prominent researches in the field of petroleum geology.

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Shale Oil Occurrence and Reservoir Characteristics of the Qijia-Gulong Depression in Songliao Basin

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Acta Geologica Sinica(English Edition) 2015年第A1期89卷 151-153页

作者： HUO Qiuli ZENG Huasen ZHANG Xiaochang FANG Qinghua WANG Zhenying FU Li E&D Research Institute Daqing Oilfield Company Ltd.Co.

1 Introduction The technology breakthrough in the exploration of shale gas and tight oil has greatly extended the global fossil fuel resources （Jia et al., 2012; Zou et al., 2012; Qiu et al., 2013）. Although shale oil has been the global hot topic in the study of unconventional resources, there are varied definitions with respect to shale oil by different researchers.

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Damage alarming of long-span suspension bridge based on GPS-RTK monitoring

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Journal of Central South University 2015年第7期22卷 2800-2808页

作者：缪长青王蔓田洪金冯兆祥陈策 School of Civil Engineering Southeast University Key Laboratory of concrete and Prestressed concrete Structure of Ministry of Education (Southeast University) Jiangsu Provincial Transportation Engineering construction Bureau Jiangsu Taizhou Bridge ltd.co.

Structure damage identification and alarming of long-span bridge were conducted with three-dimensional dynamic displacement data collected by GPS subsystem of health monitoring system on Runyang Suspension ***,the effects of temperature on the main girder spatial position coordinates were analyzed from the transverse,longitudinal and vertical directions of bridge,and the correlation regression models were built between temperature and the position coordinates of main girder in the longitudinal and vertical directions;then the alarming indices of coordinate residuals were conducted,and the mean-value control chart was applied to making statistical pattern identification for abnormal changes of girder dynamic coordinates;and finally,the structural damage alarming method of main girder was *** results show that temperature has remarkable correlation with position coordinates in the longitudinal and vertical directions of bridge,and has weak correlation with the transverse *** 3%abnormal change of the longitudinal coordinates and 5%abnormal change of the vertical ones caused by structural damage are respectively identified by the mean-value control chart method based on GPS dynamic monitoring data and hence the structural abnormalities state identification and damage alarming for main girder of long-span suspension bridge can be realized in multiple directions.

关键词： long-span suspension bridge damage alarming mean-value control chart GPS displacement temperature correlation

Preparation of co/S co-doped carbon catalysts for excellent methylene blue degradation

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 169-181页

作者： Haixu Li Haobo He Tiannan Jiang Yunfei Du Zhichen Wu Liang Xu Xinjie Wang Xiaoguang Liu Wanhua Yu Wendong Xue School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Jinyu Tongda Refractory Technologies co. Ltd.Beijing 100085China

S and co co-doped carbon catalysts were prepared via pyrolysis of MOF-71 and thiourea mixtures at 800℃at a mass ratio of MOF-71 to thiourea of 1:0.1 to effectively activate peroxymonosulfate(PMS)for methylene blue(MB)*** effects of two different mixing routes were identified on the MB degradation ***,the catalyst obtained by the alcohol solvent evaporation(MOF-AEP)mixing route could degrade 95.60%MB(50 mg/L)within 4 min(degradation rate:K=0.78 min^(-1)),which was faster than that derived from the direct grinding method(MOF-DGP,80.97%,K=0.39 min^(-1)).X-ray photoelectron spectroscopy revealed that the co-S content of MOF-AEP(43.39at%)was less than that of MOF-DGP(54.73at%),and the proportion of C-S-C in MOF-AEP(13.56at%)was higher than that of MOF-DGP(10.67at%).Density functional theory calculations revealed that the adsorption energy of co for PMS was -2.94 eV when sulfur was doped as C-S-C on the carbon skeleton,which was higher than that when sulfur was doped next to cobalt in the form of co-S bond(-2.86 eV).Thus,the C-S-C sites might provide more contributions to activate PMS compared with ***,the degradation parameters,including pH and MOF-AEP dosage,were ***,radical quenching experiments and electron paramagnetic resonance(EPR)measurements revealed that ^(1)O_(2)might be the primary catalytic species,whereas·O~(2-)might be the secondary one in degrading MB.

关键词： advanced oxidation process alcohol solvent evaporation hydrogen bond S and co co-doped carbon catalysts wastewater remediation

Effects of cryogenic treatment on mechanical properties and microstructure of Fe-Cr-Mo-Ni-C-co alloy

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Journal of Central South University of Technology 2008年第4期15卷 454-458页

作者：朱远志尹志民周勇雷全锋方文胜 Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and Technology School of Materials Science and Engineering Central South University Danjiang Aluminum ltd.co.

Fe-Cr-Mo-Ni-C-co alloy was quenched in liquid nitrogen and held for 24 *** tester,OM,XRD,SEM were used to investigate the mechanical properties and microstructures of the *** results show that the hardness increases by 1-2(HRC)and the compressive strength decreases slightly after cryogenic *** increase in hardness is attributed to the transformation from austenite to martensite and the precipitation of the very tiny carbideη-*** decrease in compressive strength is caused by residual *** great amount of carbides,such as Cr7C3 and Fe2MoC,in the alloy and the obvious difference in thermal expansion coefficient between these carbides and the matrix at the cryogenic temperatures lead to this residual *** microscopy of cryogenic martensite is different from that of the non-cryogenic *** cryogenic martensite is long and fine;while the non-cryogenic martensite is short and *** is obvious surface relief of the cryogenic martensite *** is not orientational of this kind surface relief and the boundary of this surface relief is smooth and in a shape of *** surface relief in the non-cryogenic martensite is wide and arranged in parallel,and the boundary of surface relief is not *** characteristics may imply different growth ways of the two kinds of martensite.

关键词： Fe-Cr-Mo-Ni-C-co alloy powder metallurgy microstructure mechanical properties cryogenic martensite

Wafer-scale fabrication of carbon-nanotube-based CMOS transistors and circuits with high thermal stability

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Nano Research 2022年第11期15卷 9875-9880页

作者： Nan Wei Ningfei Gao Haitao Xu Zhen Liu Lei Gao Haoxin Jiang Yu Tian Yufeng Chen Xiaodong Du Lian-Mao Peng Beijing HuaTanYuanXin Electronics Technology ltd.co. Beijing 101399China Research Center for Carbon-based Electronics Peking UniversityBeijing 100871China Beijing Institute of Carbon-based Integrated Circuits Beijing 100195China

Thanks to its single-atomic-layer structure,high carrier transport,and low power dissipation,carbon nanotube electronics is a leading candidate towards beyond-silicon *** low temperature fabrication processes enable three-dimensional(3D)integration with logic and memory(static random access memory(SRAM),magnetic random access memory(MRAM),resistive random access memory(RRAM),etc.)to realize efficient near-memory ***,carbon nanotube transistors require good thermal stability up to 400℃ processing temperature to be compatible with back-end-of-line(BEOL)process,which has not been previously *** this work,we developed a robust wafer-scale process to build complementary carbon nanotube transistors with high thermal stability and good uniformity,where AlN was employed as electrostatic doping *** gate stack and passivation layer were optimized to realize high-quality ***,we demonstrate 1-bit carbon nanotube full adders working under 250℃ with rail-to-rail outputs.

关键词： carbon nanotube field-effect transistors complementary metal-oxide-semiconductor(CMOS) thermal stability waferscale integrated circuits