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水电站机电技术 2024年第5期47卷 121-124页

作者：蒋滢洁徐志琥长沙理工大学湖南长沙410000 钦州供电局广西钦州535000

采用变频技术,通过深入分析空压机的运行特性和能耗模式,设计并实施了一种有效的节能优化改造方案。经过多种工程实例的验证,该方案显著提升了空压站房系统的设备节能效果,为工业生产中的空压机节能改造提供了新的思路。本研究不仅具有... 详细信息

采用变频技术,通过深入分析空压机的运行特性和能耗模式,设计并实施了一种有效的节能优化改造方案。经过多种工程实例的验证,该方案显著提升了空压站房系统的设备节能效果,为工业生产中的空压机节能改造提供了新的思路。本研究不仅具有理论创新,更在实际应用中展现出显著的节能潜力和推广价值,有助于推动绿色生产和可持续发展。

关键词：空压机变频节能优化改造

新时期提升企业技术创新能力和竞争力的路径研究--以邯郸市企业为例

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现代工业经济和信息化 2024年第3期14卷 269-271页

作者：胡绪志耿鹏李忠冀南技师学院河北邯郸056046

企业是国家部署实施强国战略的现实物质基础,技术创新是提升企业核心竞争力的重要途径,也是促进经济发展和社会进步的最原始、最直接的推动力.我国"十四五"规划目标和2035年远景目标能否顺利实现与企业的技术创新能力和竞争力的强弱有... 详细信息

企业是国家部署实施强国战略的现实物质基础,技术创新是提升企业核心竞争力的重要途径,也是促进经济发展和社会进步的最原始、最直接的推动力.我国"十四五"规划目标和2035年远景目标能否顺利实现与企业的技术创新能力和竞争力的强弱有着直接的关系.探讨新时期提升企业科技创新能力的时代背景和意义,对邯郸市企业技术创新能力目前的发展现状进行分析研究,有针对性地提出新时期提升邯郸市企业自身技术创新能力和竞争力的实施路径,为企业提供决策参考.

关键词：技术创新竞争力创新驱动邯郸市

Antimony Potassium Tartrate Stabilizes Wide-Bandgap Perovskites for Inverted 4-T All-Perovskite Tandem Solar Cells with Efficiencies over 26%

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Nano-Micro Letters 2023年第7期15卷 204-217页

作者： xuzhi hu Jiashuai Li Chen Wang Hongsen Cui Yongjie Liu Shun Zhou Hongling Guan Weijun Ke Chen Tao Guojia Fang Key Laboratory of Artificial Micro/Nano Structures of Ministry of Education School of Physics and TechnologyWuhan UniversityWuhan 430072People’s Republic of China

Wide-bandgap(WBG)perovskites have been attracting much attention because of their immense potential as a front light-absorber for tandem solar ***,WBG perovskite solar cells(PSCs)generally exhibit undesired large open-circuit voltage(VOC)loss due to light-induced phase segregation and severe non-radiative recombination ***,antimony potassium tartrate(APTA)is added to perovskite precursor as a multifunctional additive that not only coordinates with unbonded lead but also inhibits the migration of halogen in perovskite,which results in suppressed non-radiative recombination,inhibited phase segregation and better band energy ***,a APTA auxiliary WBG PSC with a champion photoelectric conversion efficiency of 20.35%and less hysteresis is *** maintain 80%of their initial efficiencies under 100 mW cm^(-2)white light illumination in nitrogen after 1,000 ***,by combining a semi-transparent WBG perovskite front cell with a narrow-bandgap tin–lead PSC,a perovskite/perovskite four-terminal tandem solar cell with an efficiency over 26%is *** work provides a feasible approach for the fabrication of efficient tandem solar cells.

关键词： Perovskite solar cell Tandem Wide bandgap Multifunctional additive

Manipulating the morphology of CdS/Sb_(2)S_(3) heterojunction using a Mg-doped tin oxide buffer layer for highly efficient solar cells

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Journal of Energy Chemistry 2022年第3期31卷 374-381,I0010页

作者： Jiashuai Li Liangbin Xiong xuzhi hu Jiwei Liang Cong Chen Feihong Ye Jing Li Yongjie Liu Wenlong Shao Ti Wanga Chen Tao Guojia Fang Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China School of Physics and TechnologyWuhan UniversityWuhan 430072HubeiChina School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665GuangdongChina Shenzhen Institute Wuhan UniversityShenzhen 518055GuangdongChina

Antimony sulfide(Sb_(2)S_(3))is an appealing semiconductor as light absorber for solar cells due to its high absorption coefficient,appropriate band gap(~1.7 e V)and abundance of constituent ***,power conversion efficiency(PCE)of Sb_(2)S_(3)-based solar cells still lags much behind the theoretically predicted due to the imperfect energy level alignment at the charge transporting layer/Sb_(2)S_(3)interfaces and hence severe charge ***,we insert a high-temperature sintered magnesium(Mg)-doped tin oxide(SnO_(2))layer between cadmium sulfide(Cd S)and fuorine doped tin oxide to form a cascaded energy level alignment and thus mitigate interfacial charge ***,the inserted Mg-doped Sn O_(2)buffer layer facilitates the growth of the neibouring Cd S film with orientation followed by Sb_(2)S_(3)film with larger grains and fewer ***,the resultant Sb_(2)S_(3)solar cells with Mg-doped SnO_(2)deliver a champion PCE of 6.31%,22.8%higher than those without a buffer *** work demonstrates that deliberate absorber growth as well as efficient hole blocking upon an appropriate buffer layer is viable in obtaining solution-processed Sb_(2)S_(3)solar cells with high performance.

关键词： Morphology Sb_(2)S_(3)solar cells Mg-doped tin oxide Orientation

Evidence of Middle Pleistocene hominin migration in the Qinling Mountains(central China)from the Miaokou Paleolithic site

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Journal of Geographical Sciences 2022年第2期32卷 358-374页

作者： LIU Dengke SUN Xuefeng hu xuzhi YI Liang GUO Xiaoqi WANG Yichao WANG Shejiang LU huayu School of Geography and Ocean Science Nanjing UniversityNanjing 210023China School of Earth Sciences and Engineering Nanjing UniversityNanjing 210023China State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China Key Laboratory of Vertebrate Evolution and human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyCASBeijing 100044China CAS Center for Excellence in Life and Paleoenvironment Beijing 100044China

The Qinling Mountain Range(QMR)spans a large region in China and is an important area of hominin *** Paleolithic sites are found in Bahe,South Luohe,and Hanjiang river valleys in the northern,eastern,and southern part of the range,*** Danjiang River valley acts as a channel connecting these valleys and stretches from the north to the south of the *** previous dating of the Paleolithic sites in the Danjiang valley mainly relied on geomorphologic comparison,stratigraphic correlation,fossil characteristics,and Paleolithic artifacts,indicating a lack of absolute *** this study,we conducted a detailed geochronological investigation of the entire valley,and selected an ideal site—the Miaokou *** on the identification of the loess-paleosol sequences,optically stimulated luminescence,and magnetostratigraphy,the Paleolithic artifacts of the Miaokou site located within the S5 and S6 layers of the profile belong to~0.6-0.7 *** suggests that the Paleolithic site is an old site in the Danjiang River valley,and this period also witnessed a rapid increase in the number of hominin sites during the Middle *** our results with previous reports across the QMR,we propose that the Danjiang River valley might have been a corridor for hominin migration,and is worthy of further investigation.

关键词： Danjiang River valley Miaokou site loess-paleosol sequence magnetostratigraphy hominin routeway

The role of aromatic residues in controlling the supramolecular chirality of short amphiphilic peptides

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Nano Research 2023年第10期16卷 12230-12237页

作者： Hao Qi Kai Qi Jie Li Chunyong He Mingrui Liao xuzhi hu Yurong Zhao Yubin Ke Chunqiu Zhang Jun Zhang Jiqian Wang Jian R.Lu Hai Xu Department of Biological and Energy Chemical Engineering China University of Petroleum(East China)Qingdao 266580China College of Life Science Nankai UniversityTianjin 300071China Spallation Neutron Source Science Center Chinese Academy of Sciences(CAS)Dongguan 523803China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Biological Physics Group Department of Physics and AstronomyThe University of ManchesterManchester M139PLUK School of Material Science and Engineering China University of Petroleum(East China)Qingdao 266580China

Although the relationship between molecular and supramolecular chirality remains elusive,the existing results have demonstrated the vital role of hydrophilic motifs in controlling the supramolecular handedness of peptide nanofibrils compared with hydrophobic ***,unlike conventional hydrophobic residues,we speculate that aromatic hydrophobic residues are mostly likely to play a unique role in regulating the supramolecular handedness because theπ–πstacking interactions of their side chains are directional like hydrogen bonding and can direct high levels of self-assembly due to the geometric confining of aromatic *** confirm this hypothesis,we here design a series of amphiphilic short peptides,with their hydrophobic motifs being composed of aromatic *** short lengths not only favor their structural stability,synthesis,and sequence variation but also enable us to readily link their molecular and supramolecular *** the combination of experiments and theoretical simulations,we demonstrate that the peptides containing L-form aromatic residues form left-handed nanofibrils while those containing D-form aromatic residues assemble into right-handed ones,irrespective of the chirality of their C-terminal hydrophilic *** calculations revealed that the stacking of aromatic side chains betweenβ-strands directed the twisting direction of theβ-sheets formed,with L-and D-form phenylalanine side chains stacking in a clockwise and anti-clockwise way,and more ordered and stronger aromatic stacking for homochiral peptides facilitated the formation of nanofibrils with a marked tubular *** study has bridged the knowledge gap in our understanding of how aromatic residues affect the supramolecular chirality of short peptides.

关键词： amphiphilic short peptide molecular chirality supramolecular handedness aromatic residue π–πstacking

甘草泻心汤加减辅助治疗儿童复发性口腔溃疡寒热错杂证50例临床观察

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中医儿科杂志 2022年第3期18卷 77-80页

作者：胡旭治陈凯宇孙彦浙江大学医学院附属第一医院北仑分院口腔科浙江宁波315800 浙江大学医学院附属第一医院北仑分院儿科浙江宁波315800 浙江大学医学院附属第一医院北仑分院中医科浙江宁波315800

目的观察甘草泻心汤加减辅助治疗儿童复发性口腔溃疡寒热错杂证的临床疗效。方法选取2018年1月至2020年1月在浙江大学医学院附属第一医院北仑分院口腔科和儿科就诊的复发性口腔溃疡寒热错杂证患儿100例,采用随机数字表法分为对照组和治... 详细信息

目的观察甘草泻心汤加减辅助治疗儿童复发性口腔溃疡寒热错杂证的临床疗效。方法选取2018年1月至2020年1月在浙江大学医学院附属第一医院北仑分院口腔科和儿科就诊的复发性口腔溃疡寒热错杂证患儿100例,采用随机数字表法分为对照组和治疗组,各50例。对照组予地喹氯铵含片含服,维生素B_(12)片口服;治疗组在对照组治疗方法的基础上给予甘草泻心汤加减治疗。2组均以7 d为1个疗程,2个疗程后统计临床疗效。结果对照组总有效率为86.0%(43/50),治疗组为98.0%(49/50),2组比较,差异有统计学意义(P0.05);治疗后,2组CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)水平明显升高,CD8^(+)水平明显下降,与同组治疗前比较,差异有统计学意义(P<0.05),且治疗组升高或下降更显著(P<0.05)。治疗后随访3个月,对照组复发率为23.3%(10/43),治疗组为6.1%(3/49),2组比较,差异有统计学意义(P<0.05)。结论甘草泻心汤加减辅助治疗儿童复发性口腔溃疡寒热错杂证,能有效促进溃疡面愈合和疼痛缓解,提高患儿机体免疫力,降低复发率,疗效确切,值得临床推广应用。

关键词：儿童复发性口腔溃疡甘草泻心汤寒热错杂证临床观察

大麻素Ⅱ型受体参与调控低氧微环境下大鼠骨髓间充质干细胞的骨向分化

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温州医科大学学报 2019年第8期49卷 563-567页

作者：胡旭治史新连邓辉温州医科大学附属口腔医院牙周科

目的:研究大麻素Ⅱ型受体(CB2)对低氧微环境调控骨髓间充质干细胞(BMSCs)骨向分化的作用及其调控机制。方法:全骨髓细胞贴壁法分离培养rBMSCs。应用化学低氧剂CoCl2建立低氧模型,实时荧光定量PCR和Western blot检测成骨关键蛋白RUNX2、... 详细信息

目的:研究大麻素Ⅱ型受体(CB2)对低氧微环境调控骨髓间充质干细胞(BMSCs)骨向分化的作用及其调控机制。方法:全骨髓细胞贴壁法分离培养rBMSCs。应用化学低氧剂CoCl2建立低氧模型,实时荧光定量PCR和Western blot检测成骨关键蛋白RUNX2、OCN在基因和蛋白水平的表达,评估骨向分化能力。进一步结合CB2抑制剂AM630探讨CB2在低氧微环境下介导rBMSCs骨向分化中的作用。结果:与对照组比,低氧处理24、48、72、96h后rBMSCs的RUNX2、OCN mRNA和蛋白表达量显著上升(P<0.05);同时低氧处理上调CB2 mRNA和蛋白表达(P<0.05)。CB2抑制剂AM630下调低氧所促进的RUNX2、OCN的表达(P<0.05)。结论:CB2参与低氧促进rBMSCs的成骨分化的调控。

关键词：牙周炎大鼠骨髓间充质干细胞大麻素Ⅱ型受体低氧骨向分化

自由观测条件下共中心点抽道集叠加方法的误差分析

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中国煤田地质 2007年第2期19卷 59-62页

作者：徐永清邱苏胡旭芝陈迪江苏煤炭地质物探测量队南京大学江苏南京210093

常规共中心点抽道集叠加方法是以水平观测面,水平反射界面、均匀介质为条件,当前提条件不能完全具备时,会带来两个方面的误差,其一是CMP道集整体离散误差,其二是CMP道集内部各道之间的离散误差。通过建立相应数学模型并进行运算分析,界... 详细信息

常规共中心点抽道集叠加方法是以水平观测面,水平反射界面、均匀介质为条件,当前提条件不能完全具备时,会带来两个方面的误差,其一是CMP道集整体离散误差,其二是CMP道集内部各道之间的离散误差。通过建立相应数学模型并进行运算分析,界定了误差(离散量)的大小范围及分布规律:离散量与观测面反射界面之间的夹角、观测面高程、反射界面倾角及同道集炮检距等相关,其变化值越大,离散距离越大;相反离散距离会随观测面与反射点空间距离的增大而变小;另外介质波速越小,其垂直离散距离越大;中心点自激自收其离散量为0。对于CMP道集中诸道△t_0离散量常存在大于目的层反射波T/4的现象;炮距越大、观测界面倾角越大、介质波速越小,其△t_0离散值越大,其中△t_0离散值与炮检距呈非线性关系;相反反射界面埋深越大,其△t_0离散越小。根据离散量对资料影响程度的分析,指出了目前共中心点抽道集叠加方法存在着局限性。

关键词：地震资料处理反射点离散共中心点抽道集自由观测面自由反射界面