检索结果-南通市图书馆

Mechanism of Regional Subseasonal Precipitation in the Strongest and Weakest East Asian Summer Monsoon Subseasonal Variation Years

引用

Journal of Ocean University of China 2022年第6期21卷 1411-1427页

作者： hu haibo DENG Yuheng FANG Jiabei WANG Rongrong CMA-NJU Joint Laboratory for Climate Prediction Studies Instituted for Climate and Global Change ResearchSchool of Atmospheric ScienceNanjing UniversityNanjing 210093China Key Laboratory of Meteorological Disaster of Ministry of Education Nanjing University of Information Science and TechnologyNanjing 210044China

Using the National Center for Environment Prediction Climate Forecast System Reanalysis coupled dataset during 1979–2010,we selected four subseasonal indexes from the 16 East Asian Summer Monsoon(EASM)indexes to characterize the subseasonal variability of the entire EASM system.The strongest(1996)and weakest(1998)years of the subseasonal variation were revealed based on these subseasonal EASM indexes.Furthermore,three rainfall concentration areas were defined in East Asia,and these areas were dissected by the atmospheric midlatitude jet stream axis and the position of the Western North Pacific Subtropical High(WNPSH).Then,the subseasonal effects of the WNPSH,the South Asian High(SAH),the Mongolian Cyclone(MC),and the Boreal Summer Intraseasonal Oscillation(BSISO)on each rainfall concentration area were studied in the strongest and weakest subseasonal variation years of the EASM.During the summer of 1998,the WNPSH and the SAH were stable in the more southern region,which not only blocked the northward progression of the BSISO but also caused the MC to advance southward.Therefore,the summer of 1998 was the weakest subseasonal variability of the EASM,but with significant subseasonal precipitation episodes in the northern and central rainfall areas.However,in 1996,the BSISO repeatedly spread northward in the south rainfall area because of the weak intensities and northern positions of the WNPSH and the SAH,which caused significant subseasonal precipitation episodes.In addition,MC was blocked to the north of approximately 42°N with a weak subseasonal rainfall.

关键词： East Asian Summer Monsoon Subseasonal Western North Pacific Subtropical High Mongolian Cyclone Boreal Summer Intraseasonal Oscillation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Molecularly engineered lignin to polyphenol via organocatalysis as an active sunscreen ingredient

引用

Journal of Bioresources and Bioproducts 2024年第2期9卷 197-210页

作者： Yuanlong Guo Pengcheng Liu Lei Deng Changwei Lui Michael North Gang hu Qitian huang Zongbao Kent Zhao haibo Xie Department of Polymeric Materials&Engineering Guizhou UniversityGuiyang 550025China KZJ New Materials Group Guizhou Co.Ltd. Guizhou 551200China Green Chemistry Centre of Excellence Department of ChemistryUniversity of YorkYork YO105DDUK Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023China

Phenolation is one of the effective strategies to synthesize lignin-based polyphenols,improve lignin’s properties,and extend its value-added applications in biological,medicinal and cosmetic fields.Herein,by taking the structural feature advantage of lignin,an effective and green strategy was developed to molecularly engineer lignin into a robust lignin-3-(2-hydroxyphenyl)propionate ester(LPPE)derivative via a transesterification reaction between 3,4-dihydrocoumarin(DHC)and the aliphatic hydroxyls in lignin under organocatalysis.The strategy is optimized and the novel derivative was systematically characterized by ^(1)H,^(13)C and ^(31)P nuclear magnetic resonance(NMR)and Fourier transform infrared(FT-IR)spectroscopy.The findings indicated that the successful introduction of 3-(2-hydroxyphenyl)propionate groups using a OH groups/DHC/organic base mo-lar ratio of 1꞉1꞉0.3 at 120℃ for 6 h increased the content of phenolic hydroxyl groups from 1.7931 to 3.0179 mmol/g,and the LPPE exhibited excellent ultraviolet-absorbing and antioxidant per-formance with up to 90%free radical scavenging activity within 20 min using 5 mg/mL of LPPE.In addition,good biocompatibility and a high Sun protection factor(SPF)value of 40.9 were achieved at 5%(w)dosage of LPPE in the cream,indicating its significant application potential in sunscreen.

关键词： Phenolation of lignin Organocatalysis 3,4-dihydrocoumarin Antioxidant Sunscreen cream

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IKIP downregulates THBS1/FAK signaling to suppress migration and invasion by glioblastoma cells

引用

Oncology Research 2024年第7期32卷 1173-1184页

作者： ZHAOYING Zhu YANJIA hu FENG YE haibo TENG GUOLIANG YOU YUNhuI ZENG MENG TIAN JIANGUO XU JIN LI ZHIYONG LIU HAO LIU NIANDONG ZHENG Department of Neurosurgery The Affiliated Hospital of Southwestern Medical UniversityLuzhouChina Department of Neurosurgery Sichuan University West China HospitalChengduChina

Background:Inhibitor of NF-κB kinase-interacting protein(IKIP)is known to promote proliferation of glioblastoma(GBM)cells,but how it affects migration and invasion by those cells is unclear.Methods:We compared levels of IKIP between glioma tissues and normal brain tissue in clinical samples and public databases.We examined the effects of IKIP overexpression and knockdown on the migration and invasion of GBM using transwell and wound healing assays,and we compared the transcriptomes under these different conditions to identify the molecular mechanisms involved.Results:Based on data from our clinical samples and from public databases,IKIP was overexpressed in GBM tumors,and its expression level correlated inversely with survival.IKIP overexpression in GBM cells inhibited migration and invasion in transwell and wound healing assays,whereas IKIP knockdown exerted the opposite effects.IKIP overexpression in GBM cells that were injected into mouse brain promoted tumor growth but inhibited tumor invasion of surrounding tissue.The effects of IKIP were associated with downregulation of THBS1 mRNA and concomitant inhibition of THBS1/FAK signaling.Conclusions:IKIP inhibits THBS1/FAK signaling to suppress migration and invasion of GBM cells.

关键词： Inhibitor of NF-κB kinase-interacting protein(IKIP) Glioblastoma(GBM) Migration Thrombospondin 1(THBS1) FAK signaling

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

唯物史观哲学叙事的三重逻辑及其中国式现代化意义

引用

理论探讨 2024年第3期 99-108页

作者：胡海波王卓东北师范大学马克思主义学部哲学院吉林长春130024

“生产-需要”“生产-财富”“生产-自由”是唯物史观哲学叙事的三重逻辑。“生产-需要”不仅构成对近代以来的“需要-满足”单向度模型的批判,而且以“类生活”需要为“人民美好生活需要”提供了理论支撑与实践遵循。“生产-财富”不... 详细信息

“生产-需要”“生产-财富”“生产-自由”是唯物史观哲学叙事的三重逻辑。“生产-需要”不仅构成对近代以来的“需要-满足”单向度模型的批判,而且以“类生活”需要为“人民美好生活需要”提供了理论支撑与实践遵循。“生产-财富”不仅将人的全面富裕从经济生活的物欲层面擢升出来,而且为中国式现代化的“共同富裕”原则提供了重要启示。“生产-自由”不仅彻底颠覆了“西方哲学-经济学传统”与“内在分裂说”,而且为现代化的本质提供了形上指向。重新理解三重哲学叙事逻辑建构唯物史观的不同侧重及其“三位一体”的本质内涵,既有助于从多维视角把握唯物史观的科学内涵,也有助于从唯物史观的高度认同和践行中国式现代化道路。

关键词：唯物史观哲学叙事逻辑中国式现代化

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Atmospheric eddy anomalies associated with the wintertime North Pacific subtropical front strength and their influences on the seasonal-mean atmosphere

引用

Science China Earth Sciences 2016年第10期59卷 2022-2036页

作者： WANG LiYing hu haibo YANG XunQun REN XueJuan CMA-NJU Joint Laboratory for Climate Prediction Studies Instituted for Climate and Global Change Research School of Atmospheric Science Nanjing University

This study investigates transient eddy activity anomalies in the mid-latitude upper troposphere associated with intensity variability of the wintertime North Pacific subtropical front. Our results show that the meridional gradient of air temperature and baroclinic instability in the mid-latitude atmosphere become stronger as the subtropical front intensifies, and the mid-latitude westerly jet accelerates with barotropic structure. We further divide the mid-latitude atmospheric eddy activities into high-(2–7 days) and low-frequency(10–90 days) eddy activities according to their life periods. We find that, when the oceanic subtropical front intensifies, the high-frequency atmospheric eddy activity in the mid-latitudes strengthens while the low-frequency eddy activity weakens. The stronger high-frequency eddy activity tends to moderate the air temperature gradient and baroclinicity in the mid-latitudes. High-frequency eddy anomalies accelerate the westerly jet on the northern side and downstream of the westerly jet, and enhance the jet with equivalent barotropic structure. In contrast, the weaker low-frequency eddy activity has a negative contribution to zonal wind speed tendency and attenuates the zonal homogenization of the jet. The anomalous thermodynamic forcing of the low-frequency eddy activity helps maintain the meridional gradient of air temperature in the mid-troposphere.

关键词：涡旋活动大气温度活动异常北太平洋副热带冬季中纬度地区平均

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

睡眠结构在创伤性脑损伤后意识障碍患者意识状态评估及恢复中作用的研究进展

引用

中华创伤杂志 2024年第2期40卷 140-145页

作者：胡楠荼李岩狄海波杭州师范大学国际植物状态和意识科学研究所杭州311121

创伤性脑损伤(TBI)后意识障碍是由于脑实质和(或)脑血管受损等原因导致的意识缺损。随着TBI患者数量不断增加,意识障碍患者数量也日益增多。此类患者病程较长,却丧失大部分自主能力,严重影响其生活质量。然而,目前关于意识障碍的脑损伤... 详细信息

创伤性脑损伤(TBI)后意识障碍是由于脑实质和(或)脑血管受损等原因导致的意识缺损。随着TBI患者数量不断增加,意识障碍患者数量也日益增多。此类患者病程较长,却丧失大部分自主能力,严重影响其生活质量。然而,目前关于意识障碍的脑损伤机制尚不明确。TBI后意识障碍患者的意识评估主要借助量表,误诊率较高;常用的干预手段包括金刚烷胺、唑吡坦等药物,以及包含神经调控和感觉刺激程序在内的非药物干预,均不能获得满意的疗效,亟需更加精准的评估指标及有效的干预措施。睡眠所维持的各种神经生理活动对意识至关重要,其规律性很可能反映TBI后意识障碍患者的意识状态,睡眠的规律性一般通过睡眠结构来体现,包括昼夜节律和各种睡眠特征,而改善患者睡眠的规律性也可能促进其意识状态的恢复。为此,笔者就睡眠结构在TBI后意识障碍患者意识状态评估及恢复中作用的研究进展进行综述,为其临床应用提供参考。

关键词：颅脑损伤意识障碍睡眠结构

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

数字化创业叙事与社会创业合法性获取——博迅案例研究

引用

科技进步与对策 2024年第12期41卷 12-22页

作者：胡海波位鹏周洁江西财经大学工商管理学院江西南昌330032

利用创新手段解决社会问题的社会创业模式逐渐成为有效方式。作为承担社会责任、创造社会价值的主体,社会企业兼具社会性与创新性双重特点,这也导致其面临更大的合法性难题。同时,在数字经济背景下,创业叙事具有数字化特点和新叙事形式... 详细信息

利用创新手段解决社会问题的社会创业模式逐渐成为有效方式。作为承担社会责任、创造社会价值的主体,社会企业兼具社会性与创新性双重特点,这也导致其面临更大的合法性难题。同时,在数字经济背景下,创业叙事具有数字化特点和新叙事形式,但是现有研究缺乏对数字化创业叙事内涵与外延的探讨。以此为基础,聚焦无人机灭火行业的社会创业,通过对博迅汽车有限公司的探索性单案例研究,深入解读数字化创业叙事对社会创业外部合法性的影响机制。研究发现:数字化创业叙事在叙事手段、叙事速度和叙事范围上呈现不同的数字化叙事形式;合法性接纳度涵盖合法性接纳障碍、合法性接纳程度、合法性接纳周期三方面,它们具有不同重要性;数字化创业叙事与社会创业合法性获取关系呈现“跨越—培育—挑战”的动态过程。

关键词：数字化创业叙事合法性接纳度社会创业合法性案例研究

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Different Effects of Sea Surface Temperature and Aerosols on Climate in East Asia During Spring

引用

Journal of Ocean University of China 2015年第4期14卷 585-595页

作者： hu haibo LIU Chao ZHANG Yuan YANG Xiuqun School of Atmospheric Sciences Nanjing University School of Atmospheric Sciences Nanjing University of Information Science and Technology

In this study, we used the NCAR CAM3.0 model to study the climate effects of both decadal global Sea Surface Temperature(SST) changing and the increasing aerosol concentration in East Asia in boreal spring. In the decadal SST changing experiment, a prominent sea surface cyclone anomaly occurred west of the Northwest Pacific warming SST. The cyclone anomaly is conductive to anomalous rising motion and more rainfall over the Northwest Pacific and southeast coast areas of China, but less rainfall in central China. Caused by the only aerosol concentration increasing, the change of climate in East Asia is totally different from that induced by the regime shift of SST around 1976/77 with the same model. The sulfate and black carbon aerosol concentrations were doubled respectively and synchronously in East Asia(20?–50?N, 100?–150?E) to investigate the climate effects of these two major aerosol types in three experiments. The results show that, in all three aerosol concentration changing experiments, the rainfall during boreal spring increases in North China and decreases in central China. It's worth noting that in the DTWO experiment, the rainfall diminishes in central China while it increases in the north and southeast coast areas of China, which is similar to observations. From the vertical profile between 110?E and 120?E, it is found that sulfate and black carbon aerosols first change the temperature of lower troposphere owing to their direct radiative effect, and then induce secondary meridional circulation anomaly through the different dynamic mechanisms involved, and at last generate precipitation and surface temperature anomalous patterns mentioned above.

关键词：东亚气候大气气溶胶海表温度东南沿海地区气溶胶浓度中国北方西北太平洋环流异常

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Influences of Indian Ocean interannual variability on different stages of El Nio: A FOAM1.5 model approach

引用

Science China Earth Sciences 2014年第11期57卷 2616-2627页

作者： HONG XiaoYuan hu haibo YANG XiuQun ZHANG Yuan LIU GuoQiang LIU Wei Institute of Oceanology Chinese Academy of Sciences School of Atmospheric Sciences Nanjing University University of Chinese Academy of Sciences Canada Bedford Institute of Oceanography School of Marine Sciences Nanjing University of Information Science and Technology Scripps Institution of Oceanography University of California

Both the tropical Indian and tropical Pacific Oceans are active atmosphere-ocean interactive regions with robust interannual variability, which also constitutes a linkage between the two basins in the mode of variability. Using a global atmosphereocean coupled model, we conducted two experiments(CTRL and PC) to explore the contributions of Indian Ocean interannual sea surface temperature(SST) modes to the occurrence of El Ni?o events. The results show that interannual variability of the SST in the Indian Ocean induces a rapid growth of El Ni?o events during the boreal autumn in an El Ni?o developing year. However, it weakens El Ni?o events or even promotes cold phase conversions in an El Ni?o decaying year. Therefore, the entire period of the El Ni?o is shortened by the interannual variations of the Indian Ocean SST. Specifically, during the El Ni?o developing years, the positive Indian Ocean Dipole(IOD) events force an anomalous Walker circulation, which then enhances the existing westerly wind anomalies over the west Pacific. This will cause a warmer El Ni?o event, with some modulations by ocean advection and oceanic Rossby and Kelvin waves. However, with the onset of the South Asian monsoon, the Indian Ocean Basin(IOB) warming SST anomalies excite low level easterly wind anomalies over the west tropical Pacific during the El Ni?o decaying years. As a result, the El Ni?o event is prompted to change from a warm phase to a cold phase. At the same time, an associated atmospheric anticyclone anomaly appears and leads to a decreasing precipitation anomaly over the northwest Pacific. In summary, with remote forcing in the atmospheric circulation, the IOD mode usually affects the El Ni?o during the developing years, whereas the IOB mode affects the El Ni?o during the decaying years.

关键词：热带印度洋年际变化厄尔尼诺事件厄尔尼诺年 SST异常热带太平洋大气环流 El

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

海上油气平台不稳定电源与储能联合配置优化策略

引用

中国海上油气 2024年第1期36卷 143-155页

作者：胡长斌刘超罗珊娜冯海波北方工业大学北京100144 国网新源控股有限公司北京十三陵蓄能电厂北京102200

针对海上油气平台集群接入不稳定电源与储能的联合配置问题,结合海上风电、光伏特点及已有的拓扑结构,提出了三阶段风机/光伏/储能阶段式联合配置策略,介绍嵌入潮流计算的阶段式粒子群算法。第一阶段通过LightGBM网络预测模型得到风机... 详细信息

针对海上油气平台集群接入不稳定电源与储能的联合配置问题,结合海上风电、光伏特点及已有的拓扑结构,提出了三阶段风机/光伏/储能阶段式联合配置策略,介绍嵌入潮流计算的阶段式粒子群算法。第一阶段通过LightGBM网络预测模型得到风机光伏的时序预测发电功率,再以投资建设经济性和潮流稳定性为目标优化每个节点的风机/光伏容量;第二阶段针对不稳定电源配置后的配电网,提出了基于电压和损耗灵敏度为指标的集群划分方法,将配电网集群划分为若干个子集群;第三阶段根据划分后的子集群,以储能容量、配电网损耗和节点电压波动为目标为每个子集群内配置储能。以渤海油田某10 kV实际油气平台配电网为例,设立燃气机出力功率自定义和经济性自定义两种方案来验证联合配置优化决策的合理性。结果表明,两种配置策略都可以有效地提升海上油气平台配电网的潮流稳定性,提高新能源的渗透率。本文研究验证了海上分散式风机/光伏发电工程的可行性,有利于实现未来海上油气平台的“零碳”建设。

关键词：海上油气平台风电光伏储能优化策略子集群划分灵敏度指标零碳

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：