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基于STIRPAT模型的山东省居住建筑运行碳排放影响因素研究

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建材技术与应用 2024年第3期 14-19页

作者：李明柱刘梦雪李华林吉林建筑大学经济与管理学院吉林长春130118

为有效实施建筑领域节能减排,实现双碳目标,以2005-2021年山东省居住建筑运行阶段碳排放数据为研究对象,利用STIRPAT模型对人口数量、人均GDP、人均消费支出、人均可支配收入、城镇化水平、居住建筑面积、单位建筑面积能耗、能源消耗强... 详细信息

为有效实施建筑领域节能减排,实现双碳目标,以2005-2021年山东省居住建筑运行阶段碳排放数据为研究对象,利用STIRPAT模型对人口数量、人均GDP、人均消费支出、人均可支配收入、城镇化水平、居住建筑面积、单位建筑面积能耗、能源消耗强度和能源结构等影响碳排放的因素进行岭回归分析。结果表明:人口数量、人均GDP、人均消费支出、人均可支配收入、城镇化水平、居住建筑面积、单位建筑面积能耗和能源消耗强度等的增加会促使碳排放量的增加,但能源结构的增加会抑制碳排放量的增加,其中人口数量是影响碳排放的关键因素。据此提出山东省居住建筑节能减排的建议和对策。

关键词：居住建筑运行碳排放 STIRPAT模型影响因素强度岭回归分析

Generation of Four-Photon Cluster State with Coherent light via Cross-Kerr Nonlinearity

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Communications in Theoretical Physics 2008年第9期50卷 623-626页

作者： DU Qian-hua YE Ming-Yong CHEN Zhi-hua li Xing-hua lin Xiu-Min School of Physics and Optoelectronics Technology Fujian Normal University Fuzhou 350007 China

We propose two schemes for preparing four-photon cluster state through cross-Kerr nonlinearity. Two coherent fields interact when they enter a nonlinear Kerr medium. If the interaction time is chosen appropriately in each Kerr medium, four-photon cluster state can be generated based on the results of two homodyne detectors in the first scheme. These schemes only use Kerr medium and homodyne measurements on coherent light fields, which can be effciently made in quantum optical laboratories. In addition, weak cross-Kerr nonlinearity is sufficient. All of the properties make these schemes feasible in experiments.

关键词： cluster state cross-Kerr nonlinearity homodyne measurement

Characterization of γ-Fe_2O_3 nanoparticles prepared by transformation of α-FeOOH

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Chinese Science Bulletin 2011年第22期56卷 2383-2388页

作者： MIAO hua li Jian lin YueQiang liU XiaoDong ZHANG QingMei FU Jun School of Physics Science and Technology & MOE Key Laboratory on Luminescence and Real-Time Analysis Southwest University Chongqing400715 China

γ-Fe2O3 nanoparticles were successfully synthesized by a chemically induced transformation of α-*** this method,the precursor(α-FeOOH)was prepared by chemical precipitation,and then treated with a mixed FeCl2/NaOH solution to produce the nanoparticles.X-ray diffraction indicated that when the precursor was treated with FeCl2(0.22 mol/L)and NaOH(0.19 mol/L),pure γ-Fe2O3 nanoparticles were ***,when the concentration of FeCl2 waslites.

关键词： Fe2O3 FeOOH 纳米粒子转化电子显微镜观察表征化学诱导 NaOH

Pulsars in FIRST Observations

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Chinese Journal of Astronomy and Astrophysics 2002年第2期2卷 146-150页

作者： Xiang-hua li and Jin-lin Han National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 National Astronomical Observatories Chinese Academy of Sciences Beijing 100012

We identify 16 pulsars from the Survey of Faint Images of the Radio Sky at Twenty-cm (FIRST) at 1.4 GHz. Their positions and total flux densities are extracted from the FIRST catalog. By comparing the source positions with those in the PSR catalog, we obtain better determined positions of PSR J1022+1001, J1518+4904, J1652+2651, and proper motion upper limits of PSR J0751+1807, J1012+5307, and J1640+2224. The proper motions of the other ten pulsars are consistent with the catalog values.

关键词： pulsar: general -stars: neutron

四川省偏远农村地区婴幼儿看护人辅食喂养行为影响因素研究

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中国健康教育 2024年第5期40卷 436-440,445页

作者：经文铎吴凤仪张紫怡韩睿周鑫茹李麟华崔罗晟周欢四川大学华西公共卫生学院/华西第四医院四川成都610041

目的基于综合行为模型探究四川省偏远农村地区婴幼儿看护人辅食喂养行为的现况及影响因素。方法于2022年采用多阶段整群随机抽样方法选取四川省收入水平为中低等的2个县的6~23月龄婴幼儿及其看护人,基于综合行为模型收集看护人辅食喂养... 详细信息

目的基于综合行为模型探究四川省偏远农村地区婴幼儿看护人辅食喂养行为的现况及影响因素。方法于2022年采用多阶段整群随机抽样方法选取四川省收入水平为中低等的2个县的6~23月龄婴幼儿及其看护人,基于综合行为模型收集看护人辅食喂养态度、辅食喂养主观规范等信息,采用多因素Logistic回归模型分析看护人辅食喂养行为的影响因素。结果共纳入556个样本,看护人辅食喂养行为达标率为49.64%。多因素Logistic回归结果表明,辅食喂养自我效能(OR=1.07,95%CI:1.03~1.11)与辅食喂养行为意向(OR=1.08,95%CI:1.01~1.15)为辅食喂养行为达标的积极因素,而抑郁程度(OR=0.95,95%CI:0.91~0.99)为辅食喂养行为达标的消极因素。结论四川省偏远农村地区婴幼儿看护人辅食喂养行为现状不容乐观,看护人辅食喂养的行为意向、自我效能以及抑郁程度均会对喂养行为造成影响,在未来干预中应在加强宣教与随访的同时关注看护人的心理问题。

关键词：辅食喂养看护人婴幼儿综合行为模型

Comparison of biological characteristics of marrow mesenchymal stem cells in hepatitis B patients and normal adults

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World Journal of Gastroenterology 2007年第11期13卷 1743-1746页

作者： liang Peng hua li lin Gu Xiao-Mou Peng Yang-Su huang Zhi-liang Gao Department of Infectious Diseases The Third Affiliated Hospital of Sun Yat-Sen University Guangzhou 510630 Guangdong Province China

AIM: To establish a culture system of marrow mesenchymal stem cells (MSCs)from hepatitis B patients and normal adults and to compare their biological characteristics. METHODS: MSCs were isolated from bone marrow in 34 male hepatitis B patients and 15 male normal adults and cultivated in vitro. Their biological characteristics including surface markers, shapes and appearances, growth curves, first passage time and passage generations were compared. RESULTS: Cultivation achievement ratio of hepatitis B patients was lower than that of normal adults, no statistical significance (82.35% vs 100%, P > 0.05). Compared with MSCs of normal adults, MSCs of hepatitis B patients presented a statistical lower growth curve, longer first passage time (13.0 ± 1.6 d vs 11.4 ± 1.5 d, P < 0.05), fewer passaging generation numbers (10.5 ± 1.4 generations vs 12.3 ± 1.7 generations, P < 0.05), though both shared same appearances, shapes and surface markers. MSCs in hepatitis B patients would expand, spread out and age more easily and there were more refractive particles in the cytoplasm. CONCLUSION: MSCs from hepatitis B patients can be cultured in vitro. Although their appearance, shape and surface marker are similar to those of MSCs from normal adults, there are differences in their biological characteristics.

关键词： Marrow mesenchymal stem cells Culture in vitro Biological characters

Effect of Mo and cold forging deformation on strength and ductility of cobalt-based alloy L605

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Journal of Iron and Steel Research International 2024年第7期31卷 1811-1823页

作者： Zhong-lin Wang Zhi-hua Gong Quan li Han-sheng Bao School of Materials and Metallurgy Inner Mongolia University of Science and TechnologyBaotou 014017Inner MongoliaChina Institute of Special Steels Central Iron and Steel Research Institute Co.Ltd.Beijing 100081China

Mo element was added to cobalt-based alloy L605,and cold forging deformation was *** effects of the addition and cold forging deformation on the microstructure and mechanical properties of the alloy were studied by thermodynamic calculation,electron backscatter diffraction,transmission electron microscopy,and X-ray *** stacking fault energy(SFE)of the alloy decreased after the addition,and the formation of stacking faults and intersections were promoted to improve the strength and *** tensile strength of the alloy with Mo increased from 1190 to 1702 MPa after 24%cold deformation,producing significant work *** strengthening mechanism is strain-induced martensitic transformation(SIMT)and deformation *** alloy,combined with Mo and after 24%deformation,had both high strength and ductility in comparison with the original cobalt-based alloy *** is attributed to the lower SFE which caused the increase in stacking fault *** the tensile process,theε-hcp phase was easily generated at the stacking fault to reduce the stress concentration and increase the *** SIMT by adjusting the density of stacking faults can improve the mechanical properties of cobalt-based ***ε-hcp phase,the interaction between deformation twins and dislocations,and the interaction between e-hcp phases during cold forging deformation caused local stress concentration,lowering ductility and toughness.

关键词： Cobalt-based alloy-Stacking fault energy Strain-induced martensitic transformation Deformation twin Cold forging deformation

Micro segment analysis of supercritical methane thermal-hydraulic performance and pseudo-boiling in a PCHE straight channel

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Petroleum Science 2024年第2期21卷 1275-1289页

作者： Qian li Zi-Jie lin liu Yang Yue Wang Yue li Wei-hua Cai Laboratory of Thermo-Fluid Science and Nuclear Engineering Northeast Electric Power UniversityJilin132000JilinChina School of Energy and Power Engineering Northeast Electric Power UniversityJilin132000JilinChina

The printed circuit heat exchanger(PCHE) is receiving wide attention as a new kind of compact heat exchanger and is considered as a promising vaporizer in the LNG process. In this paper, a PCHE straight channel in the length of 500 mm is established, with a semicircular cross section in a diameter of 1.2 *** simulation is employed to investigate the flow and heat transfer performance of supercritical methane in the channel. The pseudo-boiling theory is adopted and the liquid-like, two-phase-like, and vapor-like regimes are divided for supercritical methane to analyze the heat transfer and flow *** results are presented in micro segment to show the local convective heat transfer coefficient and pressure drop. It shows that the convective heat transfer coefficient in segments along the channel has a significant peak feature near the pseudo-critical point and a heat transfer deterioration when the average fluid temperature in the segment is higher than the pseudo-critical point. The reason is explained with the generation of vapor-like film near the channel wall that the peak feature related to a nucleateboiling-like state and heat transfer deterioration related to a film-boiling-like state. The effects of parameters, including mass flow rate, pressure, and wall heat flux on flow and heat transfer were *** calculating of the averaged heat transfer coefficient of the whole channel, the traditional method shows significant deviation and the micro segment weighted average method is adopted. The pressure drop can mainly be affected by the mass flux and pressure and little affected by the wall heat flux. The peak of the convective heat transfer coefficient can only form at high mass flux, low wall heat flux, and near critical pressure, in which condition the nucleate-boiling-like state is easier to appear. Moreover,heat transfer deterioration will always appear, since the supercritical flow will finally develop into a filmboiling-like state. So hea

关键词： Printed circuit heat exchanger Vaporization Supercritical methane Pseudo-boiling Micro segment analysis

Interaction of methylenetetrahydrofolate reductase C677T,cytochrome P4502E1 polymorphism and environment factors in esophageal cancer in Kazakh population

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World Journal of Gastroenterology 2008年第45期14卷 6986-6992页

作者： Jiang-Mei Qin Lei Yang Bo Chen Xiu-Mei Wang Feng li Pei-hua liao lin He Laboratory of Xinjiang Endemic and Ethnic Diseases School of Medicine Shihezi University Shihezi 832002 Xinjiang Uygur Autonomous Region China

AIM： To evaluate the association and interaction of genetic polymorphisms in methylenetetrahydrofolate reductase （MTHER） and cytochrome P4502E1 （CY- P4502E1）, environment risk factors with esophageal cancer （EC） in Kazakh, a high EC incidence area of Xinjiang Uygur Autonomous Region, China. METHODS： A 1：2 matched case-control study was conducted with 120 cases of EC and 240 populationor hospital-based controls. The controls were matched for sex, nationality, area of residence and age within a 5-year difference. MTHER and CYP4502E1 genotypes were identified by PCR-based restriction fragment length polymorphism （RFLP）. A conditional logistic regression model was established to identify risk factors. The strata method was adopted in interaction analysis. RESULTS： Low consumption of green vegetables and fresh fruits, alcohol drinking, and unsafe water （shallow well, or river） were found to be the risk factors for EC. Individuals with the MTHFR677 （C/T ＋ T/T） genotype had a 2.62-fold （95% CI： 1.61-4.28） risk of developing EC compared with those who carried the C/C genotype. Individuals with the CYP4502EIC1/C1 genotype had a 3.00-fold （95% CI： 1.82-4.96） risk compared with those who carried the CYP4502E1 （C1/C2 ＋ C2/C2） genotype. Gene-environment interaction analysis showed that MTHFR677 gene polymorphism was correlated with consumption of green vegetables and fresh fruit, while CYP4502E1 C1/C1 was correlated with alcohol drinking and unsafe drinking water. MTHFR and CYP4502E1 analysis of gene-gene interaction showed that individuals with the MTHFR677 （C/T ＋ T/T） and CYP4502EIC1/ C1 genotypes had a 7.41-fold （95% CI： 3.60-15.25） risk of developing EC compared with those who carried the MTHFR677C/C and CYP4502E1 RsaI C1/C2 ＋ C2/C2 genes, and the interaction rate was higher than that of the two factors alone. CONCLUSION： Low consumption of green vegetables and fresh fruits, alcohol drinking, and unsafe water （shallow well, or river） and polymorphisms in MTHFR and CYP4502E1

关键词： Kazakh Esophageal Cancer Methylenetet-rahydrofolate reductase C677T Cytochrome P4502E1 Genetic polymorphism Environment risk factors Interaction Case control study