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Technological innovations at the onset of the Mid-Pleistocene Climate Transition in high-latitude East Asia

National Science Review 2021年第1期8卷 135-145页

作者： Shi-Xia Yang Fa-Gang Wang Fei Xie jian-Ping Yue Cheng-long Deng Ri-Xiang Zhu Michael D.Petraglia Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of Sciences Center for Excellence in Life and Paleoenvironment Chinese Academy of Sciences Department of Archaeology Max Planck Institute for the Science of Human History Hebei Provincial Institute of Cultural Relics Department of History Anhui University State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of Sciences College of Earth and Planetary Sciences University of Chinese Academy of Sciences Human Origins Program National Museum of Natural History Smithsonian Institution School of Social Science The University of Queensland

The interplay between Pleistocene climatic variability and hominin adaptations to diverse terrestrial ecosystems is a key topic in human evolutionary studies. Early and Middle Pleistocene environmental change and its relation to hominin behavioural responses has been a subject of great interest in Africa and Europe, though little information is available for other key regions of the Old World, particularly from Eastern Asia. Here we examine key Early Pleistocene sites of the Nihewan Basin, in high-latitude northern China, dating between ～1.4 and 1.0 million years ago(Ma). We compare stone-tool assemblages from three Early Pleistocene sites in the Nihewan Basin, including detailed assessment of stone-tool refitting sequences at the ～1.1-Ma-old site of Cenjiawan. Increased toolmaking skills and technological innovations are evident in the Nihewan Basin at the onset of the Mid-Pleistocene Climate Transition(MPT).Examination of the lithic technology of the Nihewan sites, together with an assessment of other key Palaeolithic sites of China, indicates that toolkits show increasing diversity at the outset of the MPT and in its aftermath. The overall evidence indicates the adaptive flexibility of early hominins to ecosystem changes since the MPT, though regional abandonments are also apparent in high latitudes, likely owing to cold and oscillating environmental conditions. The view presented here sharply contrasts with traditional arguments that stone-tool technologies of China are homogeneous and continuous over the course of the Early Pleistocene.

关键词： early hominins behavioural adaptations technological innovations Mid-Pleistocene Climate Transition

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Research on VSG Frequency Characteristics and Energy Storage Device Capacity and Charge-Discharge Characteristics Based on Feedforward Branch

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Energy Engineering 2022年第6期119卷 2347-2367页

作者： Baoge Zhang Shanyan Ping Haoliang Shi Yi long Boxiang wu Yuemin Jiao School of Automation&Electrical Engineering Lanzhou Jiaotong UniversityLanzhouChina Qinghai Nationalities University XiningChina

Renewable energy is connected to the grid through the inverter,which in turn reduces the inertia and stability of the power grid *** traditional grid-connected inverter does not have the function of voltage regulation and frequency regulation and can therefore no longer adapt to the new *** virtual synchronous generator(VSG)has the function of voltage regulation and frequency regulation,which has more prominent advantages than traditional *** on the principle of VSG,the relationship between the frequency characteristics and the energy storage capacity of the feedforward branch-based virtual synchronous machine(FVSG)is derived when the input power and grid frequency *** the relationship between the virtual inertia coefficient,damping coefficient,and frequency characteristics of VSG and energy storage *** energy storage configuration method that meets the requirements of frequency variation characteristics is proposed.A mathematical model is established,and the Matlab/Simulink simulation software is used for *** simulation results verify the relationship between the inertia coefficient,damping coefficient,and energy storage demand of the FVSG.

关键词： Virtual synchronous machine inertia coefficient damping coefficient energy storage capacity

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Secondary crystallization strategy for highly efficient inorganic CsPbI_(2)Br perovskite solar cells with efficiency approaching 17%

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Journal of Energy Chemistry 2021年第12期30卷 558-565,I0013页

作者： Jing Ma Zhenhua Lin Xing Guo long Zhou jian He Zhou Yang Jincheng Zhang Yue Hao Shengzhong Liu Jingjing Chang State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of GrapheneSchool of MicroelectronicsXidian University2 South Taibai RoadXi’an 710071ShaanxiChina Advanced Interdisciplinary Research Center for Flexible Electronics Xidian University2 South Taibai RoadXi’an 710071ShaanxiChina Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina

Inorganic CsPbI_(2) Br perovskite solar cells(PSCs) have a tremendous development in last few years due to the trade-off between the excellent optoelectronic properties and the relatively outstanding ***,we demonstrated a strategy of secondary crystallization(SC) for CsPbI_(2) Br film in a facile planar n-i-p structure(ITO/ZnO-SnO_(2)/CsPbI_(2) Br/Spiro-OMeTAD/Ag) at low-temperature(150℃).It is achieved through the method of post-treatment with guanidinium bromine(GABr) atop annealed CsPbI_(2) Br *** was found that the secondary crystallization by GABr can not only regulate the crystal growth and passivate defects,but also serve as a charge collection center to effectively collect photogenerated *** addition,due to the excess Br ions in GABr,the formation of the Br-rich region at the CsPbI_(2) Br perovskite surface can further lower the Fermi level,leading to more beneficial band alignment between the perovskite and the hole transport layer(HTL),while the phase stability was also *** a result,the champion cell shows a superb open-circuit voltage(V_(oc)) of 1.31 V,a satisfactory power conversion efficiency(PCE) of 16.97% and outstanding *** far as we know,this should be one of the highest PCEs reported among all-inorganic CsPbI_(2) Br based PSCs.

关键词： CsPbI_(2)Br Low temperature Secondary crystallization High performance

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Double Side Interfacial Optimization for Low-Temperature Stable CsPbI_(2)Br Perovskite Solar Cells with High Efficiency Beyond 16%

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Energy & Environmental Materials 2022年第2期5卷 637-644页

作者： Jing Ma Jie Su Zhenhua Lin jian He long Zhou Tao Li Jincheng Zhang Shengzhong Liu Jingjing Chang Yue Hao State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of GrapheneSchool of MicroelectronicsXidian UniversityXi’an 710071China Advanced Interdisciplinary Research Center for Flexible Electronics Xidian UniversityXi’an 710071China Centre for Spintronics and Quantum System State Key Laboratory for Mechanical Behavior of MaterialsSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China

CsPbI_(2)Br perovskite solar cells have achieved rapid development owing to their exceptional optoelectronic properties and relatively outstanding ***,open-circuit voltage(Voc)loss caused by band mismatch and charge recombination between perovskite and charge transporting layer is one of the crucial obstacles to further improve the device ***,we proposed a bilayer electron transport layer ZnO(bottom)/SnO_(2)(top)to reduce the Voc loss(Eloss)and promote device Voc by ZnO insert layer thickness modulation,which could improve the efficiency of charge carrier extraction/transfer and suppress the charge carrier *** addition,guanidinium iodide top surface treatment is used to further reduce the trap density,stabilize the perovskite film and align the energy levels,which promotes the fill factor,short-circuit current density(Jsc),and stability of the *** a result,the champion cell of double-side optimized CsPbI_(2)Br perovskite solar cells exhibits an extraordinary efficiency of 16.25%with the best Voc as high as 1.27 V and excellent thermal and storage stability.

关键词： CsPbI_(2)Br dual interfacial optimization high performance low temperature perovskite solar cells

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不同强度匹配对X80管线钢环焊缝抗氢致裂纹性能的影响研究

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电焊机 2024年第9期54卷 111-117页

作者：吴林恩夏培培肖健靳海成马子薇油气管道输送安全国家工程研究中心河北廊坊065000 中国石油天然气管道科学研究院有限公司河北廊坊065000 中国石油管道局工程有限公司亚太分公司河北廊坊065000

环焊缝的强度匹配形式和耐腐蚀性对管道可靠运行至关重要。文中分别采用低强匹配、等强匹配和高强匹配三种匹配形式对D1219×18.4 mm X80螺旋焊管进行焊条电弧焊,对焊接接头进行抗氢致开裂(HIC)试验,并综合包括化学成分、微观组织、接... 详细信息

环焊缝的强度匹配形式和耐腐蚀性对管道可靠运行至关重要。文中分别采用低强匹配、等强匹配和高强匹配三种匹配形式对D1219×18.4 mm X80螺旋焊管进行焊条电弧焊,对焊接接头进行抗氢致开裂(HIC)试验,并综合包括化学成分、微观组织、接头强度和韧性等各种因素分析,研究不同强度匹配形式对X80管线钢环焊缝抗氢致裂纹性能的影响。结果表明,三种匹配方式下的X80管线钢焊接接头的抗HIC性能均能满足相关要求,且采用三种强度匹配焊条焊接接头的裂纹长度敏感率(CLR)、裂纹厚度敏感率(CTR)以及裂纹敏感率(CSR)随着匹配强度的升高而升高;焊缝金属的C、P、S含量对HIC敏感性有显著影响,降低这些元素的含量有助于提高焊缝的抗HIC性能;微观组织观察表明,焊缝金属的组织类型和形态对HIC敏感性也有重要影响,热力学平衡且稳定的细小组织是抗HIC的理想组织。

关键词：强度匹配 X80管线钢环焊缝氢致开裂

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Pulmonary arterial hyper-tension in a patient with hereditary hemorrhagic telangiectasia and family gene analysis:A case report

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World Journal of Clinical Cases 2021年第13期9卷 3079-3089页

作者： jian wu Yuan Yuan Xin Wang Dong-Ying Shao Li-Guo Liu jian He Peng Li Department of Anesthesiology Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina Department of Emergency Medicine Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina Department of Ultrasound Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina Department of Cardiology Fushun Second HospitalFushun 113001Liaoning ProvinceChina Department of Gastroenterology Fushun Second HospitalFushun 113001Liaoning ProvinceChina Department of Ultrasound Fushun Central HospitalFushun 113006Liaoning ProvinceChina Department of Pulmonary and Critical Care Medicine Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina

BACKGROUND Hereditary hemorrhagic telangiectasia(HHT)is a rare autosomal dominant genetic *** few patients suffering from HHT present with associated pulmonary arterial hypertension(PAH),which may result in a poor ***,we report a case of HHT with *** patient’s clinical manifestations and treatment as well as genetic analysis of family members are reviewed,in order to raise awareness of this *** SUMMARY A 45-year-old Chinese woman was admitted to the hospital to address a complaint of intermittent shortness of breath,which had lasted over the past 2 *** also had a 30-year history of recurrent epistaxis and 5-year history of *** reported that the shortness of breath had aggravated gradually over the 2 *** examination discovered anemia and detected gallop rhythm in the *** computerized tomography and cardiac ultrasound demonstrated PAH and hepatic arteriovenous *** formal clinical diagnosis was HHT combined with *** patient was treated with ambrisentan and her condition improved for a *** died half a year after the *** testing revealed the patient and some family members to carry an activin A receptor-like type 1 mutation(c.1232G>A,***411Gln);the family was thus identified as an HHT *** We report a novel gene mutation(c.1232G>A,***411Gln)in a Chinese HHT patient with PAH.

关键词： Hereditary hemorrhagic telangiectasia Pulmonary arterial hypertension Activin A receptor-like type 1 Activin receptor-like kinase 1 Arteriovenous malformation Endothelin receptor antagonist Case report

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Source mechanism of small-moderate earthquakes and tectonic stress field in Yunnan Province

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Acta Seismologica Sinica(English Edition) 2004年第5期17卷 509-517页

作者： wu jian-ping(吴建平) MING Yue-hong(明跃红) WANG Chun-yong(王椿镛) Institute of Geophysics China Earthquake AdministrationBeijing100081China Institute of GeophysicsChina Earthquake AdministrationBeijing100081China Institute of GeophysicsChina Earthquake AdministrationBeijing100081China

In the paper, source mechanisms of 33 small-moderate earthquakes occurred in Yunnan are determined by modeling of regional waveforms from Yunnan digital seismic network. The result shows that most earthquakes occurred within or near the Chuandian rhombic block have strike-slip mechanism. The orientations of maximum compressive stresses obtained from source mechanism are changed from NNW-SSN to NS in the areas from north to south of the block, and tensile stresses are mainly in ENE-WSW or NE-SE. In the eastern Tibetan Plateau, the orientations of maximum compressive stress radiate toward outside from the plateau, and the tensile stress orientations mostly parallel to arc structures. Near 28N the orientations of both maximum compressive stress and tensile stress changed greatly, and the boundary seems to correspond to the southwestern extended line of longmenshan fault. Outside of the Chuandian rhombic block, the orientations of P and T axes are some different from those within the block. The comparison shows that the source mechanism of small-moderate events presented in the paper is consistence with that of moderate-strong earthquakes determined by Harvard University, which means the source mechanism of small-moderate events can be used to study the tectonic stress field in this region.

关键词： source mechanism small-moderate earthquakes stress field Yunnan

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内皮素-1调控SOCC/TGF-β参与房颤大鼠发生心房纤维化

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安徽医科大学学报 2024年第3期59卷 429-435页

作者：贾卓然代曼玉梁士楚吴健薛杨诚张定欣沈兵赵韧安徽医科大学第一附属医院心内科合肥230032 四川大学华西医院心脏内科成都610041 安徽医科大学基础医学院生理学教研室合肥230032

目的探讨内皮素-1(ET-1)对心房颤动(AF)大鼠心房纤维化的作用和机制。方法14只成年雄性SD大鼠随机分配为对照(NC)组、房颤(AF)组;采用连续1周每日尾静脉注射1次氯化钙-乙酰胆碱混合液0.1 ml/100 g的方法建立AF大鼠模型,NC组同等方式注... 详细信息

目的探讨内皮素-1(ET-1)对心房颤动(AF)大鼠心房纤维化的作用和机制。方法14只成年雄性SD大鼠随机分配为对照(NC)组、房颤(AF)组;采用连续1周每日尾静脉注射1次氯化钙-乙酰胆碱混合液0.1 ml/100 g的方法建立AF大鼠模型,NC组同等方式注射等量生理盐水;各组均在第1天及第8天记录窦性或AF心电图,超声心动图监测心房大小和心功能;采用HE染色及Masson染色观察心房组织纤维化情况;采用Western blot法检测心房组织中内皮素-1(ET-1)、Ⅰ型胶原(COL-Ⅰ)、转化生长因子(TGF)-β、钙库操纵性钙通道(SOCC)蛋白Orai1和基质相互作用分子1(STIM1)的表达;培养小鼠心房肌细胞HL-1细胞,以梯度浓度的ET-1处理24 h后,采用Western blot法观察HL-1细胞ET-1/SOCC/TGF-β信号通路中TGF-β、Orai1及STIM1蛋白表达变化;利用siRNA转染方法敲低HL-1细胞中Orai1表达,以合适浓度的ET-1处理细胞24 h,Western blot检测HL-1细胞中TGF-β蛋白的表达情况。结果与NC组相比,超声心动图显示AF大鼠心脏左房内径(LAD)增加(P<0.05);HE和Masson染色结果显示AF组大鼠心房组织纤维化(P<0.05),Western blot检测结果提示AF组心房组织中ET-1、Orai1、STIM1、TGF-β、COL-Ⅰ蛋白表达较NC组增加(P<0.05)。ET-1处理HL-1细胞后,HL-1细胞Orai1、STIM1、TGF-β蛋白表达增多(P<0.05)。敲低HL-1细胞中Orai1表达后,ET-1的处理不再使TGF-β的表达上调。结论AF大鼠心房组织ET-1表达增多,并通过ET-1/SOCC/TGF-β信号通路促进心房纤维化。

关键词：内皮素-1 心房颤动心房纤维化 Orai1 基质相互作用分子1 TGF-β HL-1细胞

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Biomass gasification,catalytic technologies and energy integration for production of circular methanol:New horizons for industry decarbonisation

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Journal of Environmental Sciences 2024年第6期140卷 306-318页

作者： Luis F.Bobadilla Lola Azancot Miriam González-Castañ Estela Ruíz-López Laura Pastor-Pérez Francisco J.Durán-Olivencia Runping Ye Katie Chong Paula HBlanco-Sánchez Zenthao wu Tomás R.Reina JoséA.Odriozola Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla Centro Mixto CSIC-Universidad de SevillaAvda.Américo Vespucio 49Sevilla 41092Spain Departamento de Ingeniería Universidad Loyola AndalucíaAvda.de Las Universidades s/nSevilla 41704Spain Key Laboratory of jiangxi Province for Environment and Energy Catalysis School of Chemistry and Chemical EngineeringNanchang UniversityNanchang330031China Energy and Bioproducts Research Institute(EBRI) Aston UniversityBirminghamB47ETUnited Kingdom Department of Chemical and Process Engineering University of SurreyGuildfordGU27XHUnited Kingdom

The Intergovernmental Panel on Climate Change(IPCC)recognises the pivotal role of renewable energies in the future energy system and the achievement of the zero-emission *** implementation of renewables should provide major opportunities and enable a more secure and decentralised energy supply *** fuels provide long-term solutions for the transport sector,particularly for applications where fuels with high energy density are *** addition,it helps reducing the carbon footprint of these sectors in the *** on biomass characteristics feedstock is essential for scaling-up gasification from the laboratory to *** review deals with the transformation biogenic residues into a valuable bioenergy carrier like biomethanol as the liquid sunshine based on the combination of modified mature technologies such as gasification with other innovative solutions such as membranes and microchannel *** abatement is a critical process in product gas upgrading since tars compromise downstream processes and equipment,for this,membrane technology for upgrading syngas quality is discussed in this *** reactor technology with the design of state-of-the-art multifunctional catalysts provides a path to develop decentralised biomethanol synthesis from biogenic ***,the development of a process chain for the production of(i)methanol as an intermediate energy carrier,(ii)electricity and(iii)heat for decentralised applications based on biomass feedstock flexible gasification,gas upgrading and methanol synthesis is analysed.

关键词： Biogenic residues Gasification Biomethanol Circular Economy Microreactors

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肝细胞癌组织微RNA-597表达与临床病理特征、肝动脉化疗栓塞术疗效的关系

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安徽医药 2024年第2期28卷 290-294页

作者：李庆伟李威杨继东喻刘杨龙健荆门市人民医院血管介入科湖北荆门448000 荆门市人民医院肿瘤科湖北荆门448000

目的探讨肝细胞癌组织微核糖核酸-597(miR-597)表达与临床病理特征、肝动脉化疗栓塞术(TACE)疗效的关系。方法选取2019年1月至2021年1月荆门市人民医院收治的肝细胞癌病人136例,比较不同临床病理特征病人癌组织中miR-597表达水平;另治... 详细信息

目的探讨肝细胞癌组织微核糖核酸-597(miR-597)表达与临床病理特征、肝动脉化疗栓塞术(TACE)疗效的关系。方法选取2019年1月至2021年1月荆门市人民医院收治的肝细胞癌病人136例,比较不同临床病理特征病人癌组织中miR-597表达水平;另治疗后随访3个月,根据TACE疗效将病人分为有效组和无效组,并比较miR-597表达水平;采用多因素logistic回归分析影响肝细胞癌病人TACE疗效的相关因素。结果伴门静脉癌栓、伴淋巴结转移、肿瘤长径>5 cm、Ⅲa期、低分化、Child-Pugh分级B级的肝细胞癌病人癌组织中miR-597表达水平均低于无门静脉癌栓、无淋巴结转移、肿瘤长径≤5 cm、Ⅰb+Ⅱ期、中高分化、Child-Pugh分级A级的病人(P<0.05);TACE治疗后,治疗有效率为22.06%,有效组癌组织中miR-597表达水平高于无效组(0.827±0.054比0.351±0.046,P<0.05);经logistic回归分析发现,门静脉癌栓、淋巴结转移、肿瘤长径、临床分期、病理分化、Child-Pugh分级、微血管侵犯、血清甲胎蛋白(AFP)及癌组织中miR-597表达水平均是肝细胞癌病人TACE疗效的影响因素(P<0.05)。结论肝细胞癌组织miR-597表达水平与病人临床病理学特征密切相关,且miR-597表达水平亦与TACE疗效有关,其低表达量常提示TACE疗效不佳。

关键词：肝细胞癌微核糖核酸-597 肝动脉化疗栓塞术临床病理特征疗效

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