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Economic policy uncertainty and firms’investments in venture capital funds:Evidence from China

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China Journal of Accounting Research 2024年第4期17卷 190-206页

作者： Liangyong Wan Xin Sui Jing Rao lai deng School of Business Administration South China University of TechnologyGuangzhouChina School of Management Guangdong University of TechnologyGuangzhouChina

The latest business practice in the Chinese venture capital(VC)market involves the active participation of non-financial firms,as limited partners,in VC *** a unique hand-collected dataset from China,we find that economic policy uncertainty is positively related to the propensity of firms to participate in VC ***-sectional tests show that the positive effect of policy uncertainty on the likelihood of participating in VC funds is enhanced by industrial growth ***,economic consequence tests show that participating in VC funds is conducive to improving investment efficiency,increasing innovation performance and promoting product *** study advances our understanding of firms’investment decisions and the VC industry development amid economic policy uncertainty.

关键词： Economic policy uncertainty Venture capital Investment decision Limited partner

Microstructure,mechanical properties and stress corrosion behavior of friction stir welded joint of Al-Mg-Si alloy extrusion

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Rare Metals 2023年第6期42卷 2057-2067页

作者： Sen Lin Yun-lai deng Hua-Qiang Lin Ling-Ying Ye Zhen Zhang Hua Ji Xin-Ming Zhang School of Materials Science and Engineering Central South UniversityChangsha410083China Light Alloy Research Institute Central South UniversityChangsha410083China Guangxi Liuzhou Yinhai Aluminum Co. LtdLiuzhou545006China National Engineering Research Center for High-Speed EMU CRRC Qingdao Sifang Co.LtdQingdao266000China

Microstructure,mechanical properties and stress corrosion behavior of friction stir welded(FSWed) AlMg-Si alloy were *** average grain sizes of shoulder-affected zone(SAZ),nugget zone(NZ),heat-affected zone(HAZ) and base material(BM) are 6.03,4.80,168.30 and 127.24 μm,*** thermo-mechanically affected zone(TMAZ),which is generated on the edge position between HAZ and weld nugget zone,has a narrow width of 400 μ*** ultimate tensile strength(UTS) of FSWed joint is 232.20 MPa,about 91.04% with respect to that of base material of 255.06 MPa,and the joint fracture occurs at HAZ on advancing side(AS).The FSWed joint is more susceptive to stress corrosion cracking(SCC) than base material,and the SCC susceptibility increases with the rise in *** residual UTS of FSWed joints in constant loaded tests at the load levels of90,105 and 120 MPa is 89.97%,67.50% and 54.75% of the UST of FSWed joint in air,*** increase of the load in constant loaded tests and four-point beambent tests accelerates the SCC of FSWed joints.

关键词： EBSD Slow strain rate test Stress corrosion cracking Al-Mg-Si alloy Friction stir welding

Co-existing squamous cell carcinoma and chronic myelomonocytic leukemia with ASXL1 and EZH2 gene mutations:A case report

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World Journal of Clinical Cases 2023年第15期11卷 3643-3650页

作者： lai-Jun deng Yang Dong Mi-Mi Li Chang-Gang Sun Department of Hematology Weifang Hospital of Traditional Chinese MedicineWeifang 261000Shandong ProvinceChina Department of Clinical Pharmacy Weifang Hospital of Traditional Chinese MedicineWeifang 261000Shandong ProvinceChina Department of Pathology Weifang Hospital of Traditional Chinese MedicineWeifang 261000Shandong ProvinceChina

BACKGROUND Chronic myelomonocytic leukemia(CMML),a rare clonal hematopoietic stem cell disorder characterized by myelodysplastic syndrome and myeloproliferative neoplasms,has a generally poor prognosis,and easily progresses to acute myeloid *** simultaneous incidence of hematologic malignancies and solid tumors is extremely low,and CMML coinciding with lung malignancies is even ***,we report a case of CMML,with ASXL1 and EZH2 gene mutations,combined with non-small cell lung cancer(lung squamous cell carcinoma).CASE SUMMARY A 63-year-old male,suffering from toothache accompanied by coughing,sputum,and bloody sputum for three months,was given a blood test after experiencing continuous bleeding resulting from a tooth extraction at a local *** on morphological results,the patient was diagnosed with CMML and bronchoscopy was performed in situ to confirm the diagnosis of squamous cell carcinoma in the lower lobe of the *** receiving azacitidine,programmed cell death protein 1,and platinum-based chemotherapy drugs,the patient developed severe myelosuppression and eventually fatal leukocyte stasis and *** During the treatment and observation of CMML and be vigilant of the growth of multiple primary malignant tumors.

关键词： Squamous cell carcinoma Chronic myelomonocytic leukemia Myeloproliferative neoplasms Myelodysplastic ASXL1 gene mutations EZH2 gene mutations Case report

Factors controlling the metal fertilization of granitic magma: Constraints from amphibole and biotite geochemistry of the Shangcheng pluton， Dabie orogen， Central China

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Journal of Earth Science 2024年

作者： Cheng-lai deng Hui-Min Su Wu Li Wen-Tian Li State Key Laboratory of Geological Processes and Mineral Resources， Collaborative Innovation Center for Exploration of Strategic Mineral Resources， School of Earth Resources， China University of Geosciences Wuhan School of Resources and Geosciences， China University of Mining and Technology

It is very common for similar granitoids to be emplaced in the same tectonic region， with some being metal-fertilized while others are barren. The reasons for this are still not clear. Here， we take the Shangcheng pluton as an example. This pluton occurs close to the giant Shapinggou porphyry Mo deposit， and we use amphibole and biotite geochemistry as sensitive tracers to explore this issue. The Shangcheng granitoids comprise the Sigudun （SGD） and Shiguwa （SGW） units， with emplacement ages ranging from 140 ± 3 Ma to 134 ± 2.4 Ma， as revealed by titanite U-Pb dating. The geochemical data of amphibole and biotite indicate that the magma intruded from depths of ～3.3 km to ～2.3 km with increasing oxygen fugacity. The modeled results indicate that water content is an essential factor for metal fertilization， as the Shangcheng pluton has a lower water content than the Shapinggou Mo-bearing granite. The Shangcheng pluton is also characterized by fluorine-poor conditions， with lower halogen fugacity values of IV（F） and log (f H2O/f HF)fluid. In contrast， the increasing Y/Ho and Nb/Ta ratios of the Shapinggou Mo-bearing granite indicate the F-rich nature of the fertilized Shapinggou magma， and its lower Zr/Hf and K/Rb ratios suggest a greater magma differentiation. Therefore， water-poor and F-poor magma， in combination with low-degree fractional crystallization， may be the major controlling factors responsible for the Mo-barren nature of the Shangcheng pluton.

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Calculation and experimental study on heating temperature field of super-high strength aluminum alloy thick plate

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Transactions of Nonferrous Metals Society of China 2017年第11期27卷 2415-2422页

作者： Shi-tong FAN Yun-lai deng Jin ZHANG Xiao-bin GUO School of Materials Science and Engineering Central South University Changsha 410083 China State Key Laboratory of High Performance and Complex Manufacturing Central South University Changsha 410083 China Light Alloy Research Institute Central South University Changsha 410083 China

Stepped heating treatment has been applied to aluminum alloy thick plate to improve the mechanical performance and corrosion *** temperature control of the plate is the difficulty in engineering *** heating process,the calculation of surface heat transfer coefficient and the accurate temperature control method were studied based on measured heating temperature for the large-size thick *** results show that,the temperature difference between the surface and center of the thick plate is *** on the temperature uniformity,the surface heat transfer coefficient was calculated,and it is constant below300°C,but grows greatly over300°***,a lumped parameter method(LPM)was developed to predict the plate temperature.A stepped solution treatment was designed by using LPM,and verified by finite element method(FEM)and *** curves calculated by LPM and FEM agree well with the experimental data,and the LPM is more convenient in engineering application.

关键词： lumped parameter method surface heat transfer coefficient temperature field aluminum alloy thick plate

Deformation characteristics and strain-compensated constitutive equation for AA5083 aluminum alloy under hot compression

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Transactions of Nonferrous Metals Society of China 2019年第11期29卷 2252-2261页

作者： Qing-song DAI Yun-lai deng Jian-guo TANG Yu WANG School of Materials Science and Engineering Central South UniversityChangsha 410083China Guangxi Liuzhou Yinhai Aluminum Co. Ltd.Liuzhou 545006China

The hot deformation behavior of AA5083 aluminum alloy was studied using isothermal compression tests with a Gleeble 3500 thermal simulator at strain rate of 0.0110 s 1 and at temperature of 300500°*** experimental results indicate that dynamic recrystallization(DRX)tends to occur at high strain rates and temperatures,and therefore the flow stress is *** predict the flow behavior under different deformation conditions,a strain-compensated constitutive equation based on Arrhenius-type equation and Zener Hollomon parameters was *** flow stresses obtained from the constitutive equation are consistent with the experimental *** average absolute relative error is only 4.52%over the entire experimental range,indicating that the proposed constitutive equation exhibits high prediction precision for the hot deformation behavior of AA5083 aluminum alloy.

关键词： hot deformation AA5083 dynamic recrystallization constitutive equation

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低度白酒生产技术与实践

酿酒科技 2007年第7期 88-90,93页

作者：赖登燡四川全兴股份有限公司四川成都610036

白酒低度化是当前白酒消费的大势所趋,但在生产低度白酒时,面临着除浊工艺这道技术关卡。低度白酒浑浊及货架期沉淀的原因主要是由加浆水中的无机盐和原酒中的高级脂肪酸乙酯引起的。运用活性炭处理低度酒,可有效地解决沉淀问题。

关键词：低度白酒沉淀加浆水活性炭

Quenching sensitivity and heterogeneous precipitation behavior of AA7136 alloy

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Transactions of Nonferrous Metals Society of China 2021年第11期31卷 3356-3369页

作者： Zhi-min MA Yong ZHANG Sheng-dan LIU Yun-lai deng Xin-ming ZHANG School of Materials Science and Engineering Central South UniversityChangsha 410083China Baotou Vocational&Technical College Baotou 014030China Key Laboratory of Non-ferrous Metals Materials Science and Engineering Ministry of EducationCentral South UniversityChangsha 410083China

The quenching sensitivity of AA7136 alloy was investigated by time−temperature−property(TTP)diagrams,and the heterogeneous precipitation behavior during isothermal holding was investigated using scanning electron microscopy,scanning transmission electron microscopy and high resolution transmission electron *** on 99.5%TTP diagram,the nose temperature is determined to be about 346℃ with the transformation time of about 0.245 *** precipitation ofη(MgZn_(2)),T(Al_(2)Zn_(3)Mg_(3)),S(Al_(2)CuMg)or Cu−Zn-rich Y phases can be found depending on isothermal holding temperature and time,and it is described in a time−temperature−precipitation *** size and area fraction of isothermal holding induced phase particles increase,which results in the decrease of hardness of samples after *** quantitative contribution to loss of hardness by grain boundaries/subgrain boundaries and dispersoids in the matrix is discussed based on the amount of heterogeneous precipitation related to them.

关键词： AA7136 alloy quenching sensitivity time−temperature−property diagrams heterogeneous precipitation

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伊敏露天矿剥离工艺改造方案探讨

煤炭工程 2015年第3期47卷 14-16页

作者：高登来华能伊敏煤电有限责任公司内蒙古呼伦贝尔021134

针对伊敏露天矿在采区扇形推进过程中采用单斗-卡车生产工艺带来的开采成本攀升、劳动效率低、环境污染大等问题,提出了轮斗连续工艺、单斗-自移式破碎机半连续工艺、轮斗连续与单斗-自移式破碎机半连续综合工艺、单斗-卡车工艺四种剥... 详细信息

针对伊敏露天矿在采区扇形推进过程中采用单斗-卡车生产工艺带来的开采成本攀升、劳动效率低、环境污染大等问题,提出了轮斗连续工艺、单斗-自移式破碎机半连续工艺、轮斗连续与单斗-自移式破碎机半连续综合工艺、单斗-卡车工艺四种剥离工艺改造方案,并对四种剥离工艺方案进行技术与经济性分析,最终确定采取综合工艺,即:第一台阶采用轮斗连续工艺方案,第二台阶采用单斗-自移式破碎机半连续工艺。

关键词：剥离工艺轮斗连续工艺单斗-自移式破碎机半连续工艺单斗-卡车工艺