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Inventory of CO2 emissions driven by energy consumption in Hubei Province： a time-series energy input-output analysis

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Frontiers of Earth Science 2016年第4期10卷 717-730页

作者： Jiashuo LI ran luo Qing YANG Haiping YANG Department of New Energy Science and Engineering School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 China National Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074 China School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 China

Based on an input-output analysis, this paper compiles inventories of fuel-related CO2 emissions of Hubei economy in the years of 2002, 2005, and 2007. Results show that calculated total direct CO2 emissions rose from 114,462.69 kt （2002） to 196,650.31 kt （2005）, reaching 210,419.93 kt in 2007, with an average 22.50% rate of increase. Raw coal was the dominant source of the direct emissions throughout the three years. The sector of Electric Power, Heat Production, and Supply was the main direct emissions contributor, with the largest intensities observed from 2002 （1192.97 g/CNY） to 2007 （1739.15 g/ CNY）. From the industrial perspective, the secondary industry, which is characterized as manufacture of finished products, was still the pillar of the Hubei economy during this period concerned, contributing more than 80% of the total direct emissions. As a net exporter of embodied CO2 emissions in 2002 and 2007, Hubei reported net-exported emissions of 4109.00 kt and 17,871.77 kt respectively; however, Hubei was once a net importer of CO2 emissions in 2005 （2511.93 kt）. The CO2 emissions embodied in export and fixed capital formation had the two leading fractions of emissions embodied in the final use. The corresponding countermeasures, such as promoting renew- able and clean energy and properly reducing the exports of low value added and carbon-intensive products are suggestions for reducing CO2 emissions in Hubei.

关键词： input-output analysis fuel-related C02 emis-sions Hubei Province

Small-signal Multi-frequency Model for Grid-connected Inverter System with PWM Effect

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CSEE Journal of Power and Energy Systems 2020年第2期6卷 307-317页

作者： Guocheng San Wenlin Zhang ran luo Xiaoqiang Guo Huanhai Xin Elisabetta Tedeschi Mariusz Malinowski Yanshan University QinhuangdaoChina Zhejiang University HangzhouChina Department of Electric Power Engineering Norwegian University of Science and Technology7491 TrondheimNorway Institute of Control and Industrial Electronics Warsaw University of Technology00-662 WarsawPoland

It is a well known fact that pulse width modulation(PWM)produces sideband *** this point into account,the accuracy of the grid-connected inverter model can be *** this paper,considering the aliasing effect of the PWM sideband components on the closed-loop control,a complete representation for the transfer function of the PWM is ***,a multi-frequency model of grid-connected inverter system is *** is convenient for obtaining a PWM gain for grid-connected inverter system,which is *** order to have an easy physical expression of the effects caused by the sideband components,an approximation is applied to simplify the PWM *** stability analysis is used to prove that PWM gain considering PWM effect is more precise than the conventional *** results verify the effectiveness of our proposal.

关键词： Grid-connected inverter multi-frequency model pulse width modulation stability analysis

Experimental Study on Mechanical Properties of Q690 High-Strength Steel after High Cycle Fatigue Damage

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Open Journal of Applied Sciences 2022年第2期12卷 243-255页

作者： ran luo School of Civil Engineering and Architecture Southwest University of Science and Technology Mianyang China

Through the static tensile test of Q690 high-strength steel, the relevant mechanical parameters are obtained and the maximum fatigue load is determined. The fatigue life is measured by the fatigue test under the load. According to the fatigue cumulative damage method, the number of fatigue pre-damage vibration is designed in proportion. Then the fatigue pre-damage test is carried out on the high-strength steel, the stress-strain curve and the variation of residual mechanical property reduction coefficient with fatigue damage were drawn. The results show that: compared with the undamaged specimens, the yield strength and tensile strength of Q690 steel are less affected by fatigue damage, but the elongation changes more significantly, and the elastic modulus is not significantly affected. Finally, through the change of mechanical properties of Q690 high-strength steel with different fatigue damage, it provides a scientific basis for the performance evaluation of existing Q690 high-strength steel structure after fatigue damage.

关键词： Q690 High-Strength Steel Fatigue Damage Mechanical Property Stress-Strain Curve Reduction Factor

Active sites in CO2 hydrogenation over confined VOx-Rh catalysts

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Science China Chemistry 2019年第12期62卷 1710-1719页

作者： Guishuo Wang ran luo Chengsheng Yang Jimin Song Chuanye Xiong Hao Tian Zhi-Jian Zhao Rentao Mu Jinlong Gong Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and Technology Tianjin UniversityCollaborative Innovation Center of Chemical Science and Engineering

Metal oxide-promoted Rh-based catalysts have been widely used for CO2hydrogenation,especially for the ethanol ***,this reaction usually suffers low CO2conversion and alcohols selectivity due to the formation of byproducts methane and *** paper describes an efficient vanadium oxide promoted Rh-based catalysts confined in mesopore *** Rh-0.3VOx/MCM-41 catalyst shows superior conversion（～12%）and ethanol selectivity（～24%）for *** promoting effect can be attributed to the synergism of high Rh dispersion by the confinement effect of MCM-41 and the formation of VOx-Rh interface *** and theoretical results indicate the formation of til-CO at VOx-Rh interface sites is easily dissociated into*CHx,and then*CHxcan be inserted by CO to form CH3CO*,followed by CH3CO*hydrogenation to ethanol.

关键词： interfacial active sites CO2 hydrogenation ethanol Rh-based catalysts confined catalysts

Suppression of ion migration in perovskite materials by pulse-voltage method

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Chinese Physics B 2021年第11期30卷 618-624页

作者： Xue-Yan Wang Hu Wang luo-ran Chen Yu-Chuan Shao Jian-Da Shao School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Laboratory of Thin Film Optics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Key Laboratory of Materials for High Power Laser Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Hybrid halide perovskites have great potential for applications in optoelectronic ***,the typical ion migration in perovskite could lead to the non-repeatability of electrical measurement,instability of material,and degradation of device *** basic current–voltage behavior of perovskite materials is intricate due to the mixed electronic–ionic characteristic,which is still poorly understood in these *** novel measurement schematic is a promising solution to obtain the intrinsic electrical performance without the interference of ion ***,we explore the pulse-voltage(PV)method on methylammonium lead tribromide single crystals to protect the device from the ion migration.A guideline is summarized through the analysis of measurement history and condition *** influence of the ion migration on current–voltage measurement,such as repeatability and hysteresis loop,is under *** application of the PV method is demonstrated on the activation energy of *** abruption of activation energy still exists near the phase transition temperature despite the ion migration is excluded by the PV method,introducing new physical insight on the current–voltage behavior of perovskite *** guideline on PV method will be beneficial for measuring halide perovskite materials and developing optoelectronic applications with new technique schematic.

关键词： perovskites ion migration electrical properties temperature-dependent resistivity

Exosomes from young healthy human plasma promote functional recovery from intracerebral hemorrhage via counteracting ferroptotic injury

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Bioactive Materials 2023年第9期27卷 1-14页

作者： Wenqin Yang Ning Ding ran luo Qian Zhang Zhenhua Li Fengchun Zhao Shuixian Zhang Xuyang Zhang Tengyuan Zhou Haomiao Wang Long Wang Shengli Hu Guixue Wang Hua Feng Rong Hu Department of Neurosurgery Key Laboratory of NeurotraumaSouthwest HospitalThird Military Medical University(Army Medical University)400038ChongqingChina Bioengineering College of Chongqing University Chongqing400030China Medical Research Center Southwest HospitalThird Military Medical University(Army Medical University)400038ChongqingChina Affiliated Dongguan Hospital Southern Medical UniversityDongguan523059China Key Laboratory of Biorheological and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqing400030China JinFeng Laboratory Chongqing401329China

Intracerebral hemorrhage (ICH), as a type of life-threatening and highly disabled disease, has limited therapeutic approaches. Here, we show that exosomes derived from young healthy human plasma exhibiting typical exosomes features could facilitate functional recovery of ICH mice. When these exosomes are intraventricularly delivered into the brain after ICH, they mainly distribute around the hematoma and could be internalized by neuronal cells. Strikingly, exosomes administration markedly enhanced the behavioral recovery of ICH mice through reducing brain injury and cell ferroptosis. MiRNA sequencing revealed that microRNA-25-3p (miR-25- 3p) was differentially expressed miRNA in the exosomes from young healthy human plasma, compared with exosomes from the old control. Importantly, miR-25-3p mimicked the treatment effect of exosomes on behavioral improvement, and mediated the neuroprotective effect of exosomes against ferroptosis in ICH. Furthermore, luciferase assay and western blotting data illustrated that P53 as assumed the role of a downstream effector of miR-25-3p, thereby regulating SLC7A11/GPX4 pathway to counteract ferroptosis. Taken together, these findings firstly reveal that exosomes from young healthy human plasma improve functional recovery through counteracting ferroptotic injury by regulating P53/SLC7A11/GPX4 axis after ICH. Given the easy availability of plasma exosomes, our study provides a potent therapeutic strategy for ICH patients with quick clinical translation in the near future.

关键词： Intracerebral hemorrhage Exosomes Young human plasma Ferroptosis Functional recovery

3M syndrome patient with a novel mutation:A case rep

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World Journal of Clinical Cases 2024年第8期12卷 1454-1460页

作者： Ming-ran luo Si-Ming Dai Yin Li Qian Wang Hao Liu Peng Gao Jia-Yun Liu Jian Chen Shu-Jie Zhao Guo-Yong Yin Department of Orthopedics The First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029Jiangsu ProvinceChina

BACKGROUND A rare autosomal recessive genetic disorder,3M syndrome,is characterized by severe intrauterine and postnatal growth *** with 3M syndrome typically exhibit short stature,facial deformities,long tubular bones,and high vertebral bodies but generally lack mental abnormalities or other organ *** genes associated with 3M syndrome include CUL7,OBSL1 and *** clinical and molecular characteristics of patient with 3M syn-drome are unique and serve as important diagnostic *** SUMMARY In this case,the patient displayed square shoulders,scoliosis,long slender tubular bones,and normal neurological ***,the patient did not exhibit the typical dysmorphic facial features,relative macrocephaly,or growth retardation commonly observed in individuals with 3M *** exon sequencing revealed a novel heterozygous c.56681+1G>C(Splice-3)variant and a previously reported nonsense heterozygous c.3341G>A(***1114Ter)variant of ***,it is important to note that the clinical features of 3M syndrome may not always be observable,and genetic confirmation is often ***,the identification of the c.5683+1G>C variant in OBSL1 is notewor-thy because it has not been previously reported in public *** Our study identified a new variant(c.5683+1G>C)of OBSL1 that contributes to expanding the molecular profile of 3M syndrome.

关键词： 3M syndrome CUL7 OBSL1 CCDC8 Autosomal recessive Case report

Synthesis and characterization of stable osmafuran starting from HC≡CCH(OH)C≡CH and OsHCl(CO)(PPh_3)_3

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Science China Chemistry 2010年第9期53卷 1978-1981页

作者： ZHANG Hong,LIN ran,luo Ming & XIA HaiPing State Key Laboratory for Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China State Key Laboratory for Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen China

This paper presents a new convenient route to prepare osmafuran starting from readily accessible HC≡C CH(OH)C≡CH and OsHCl(CO)(PPh3)*** of a solution of OsHCl(CO)(PPh3)3 in dichloromethane with HC≡C CH(OH)C≡CH,followed by the addition of acetic acid,produced osmafuran [Os(CHC(PPh3)CO(CH2CH3))Cl(CO)(PPh3)2]Cl(2).2 has been isolated in good yield and fully characterized.1H and 13C NMR spectra show the characteristic downfield chemical shifts of the ring hydrogen and carbon *** and X-ray diffraction data provide strong evidence for the aromatic nature of *** due to the effect of the phosphonium substituent,2 exhibits remarkable thermal stability,air stability and lower reactivity.

关键词： osmafuran metallaaromatics phosphonium salt synthesis stability

跨高比L/h≤1.5复合配筋连梁箍筋受力性能的拉杆-压杆模型分析

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工程力学 2015年第4期32卷 69-76页

作者：皮天祥罗俊张爱环罗然重庆大学土木工程学院重庆400045 山地城镇建设与新技术教育部重点实验室(重庆大学) 重庆400045

试验表明:对称设置斜向钢筋的小跨高比复合配筋连梁具有良好的抗震性能,在建立并求解水平地震作用下该连梁中由混凝土主斜压杆、次斜压杆、对角斜筋拉、压杆和菱形筋拉杆等组成的超静定拉杆-压杆联合工作受力分析模型基础上,通过对连梁... 详细信息

试验表明:对称设置斜向钢筋的小跨高比复合配筋连梁具有良好的抗震性能,在建立并求解水平地震作用下该连梁中由混凝土主斜压杆、次斜压杆、对角斜筋拉、压杆和菱形筋拉杆等组成的超静定拉杆-压杆联合工作受力分析模型基础上,通过对连梁箍筋参与的传力机构分析,提出了由箍筋和混凝土次生斜压杆组成的箍筋桁架宏模型,建立了该模型中各箍筋拉杆和混凝土压杆的几何及变形协调方程、物理方程和平衡方程等共26个计算式和分析程序,2个试验试件的算例对比分析结果显示,该模型能反映连梁屈服后各受力阶段箍筋的受力状态,且计算结果具有较好的准确性。

关键词：超静定拉压杆模型变形协调方程小跨高比连梁箍筋抗剪