检索结果-南通市图书馆

Ultrafast optical response and ablation mechanisms of molybdenum disulfide under intense femtosecond laser irradiation

引用

Light(Science & Applications) 2020年第1期9卷 1265-1272页

作者： Changji Pan lan jiang Jingya Sun Qingsong Wang Feifei Wang Kai Wang Yongfeng Lu Yeliang Wang Liangti Qu Tianhong Cui Laser Micro/Nano-Fabrication Laboratory School of Mechanical EngineeringBeijing Institute of Technology100081 BeijingP.R.China Department of Electrical Engineering University of Nebraska-LincolnLincolnNE 68588-0511USA School of Information and Electronics Beijing Institute of Technology100081 BeijingP.R.China Key Laboratory for Advanced Materials Processing Technology Ministry of Education of ChinaDepartment of Mechanical EngineeringTsinghua University100084 BeijingP.R.China Department of Mechanical Engineering University of MinnesotaMinneapolisMN 55455USA

Numerous valuable studies on electron dynamics have focussed on the extraordinary properties of molybdenum disulfide(MoS_(2));however,most of them were confined to the level below the damage *** the electron dynamics of MoS_(2) under intense ultrafast laser irradiation was investigated by experiments and *** kinds of ablation mechanisms were revealed,which led to two distinct types of electron dynamics and final ablation *** a higher fluence,the emergence of superheated liquid induced a dramatic change in the transient reflectivity and micro-honeycomb *** a lower fluence,the material was just removed by sublimation,and the ablation structure was relatively flat.X-ray photoelectron spectroscopic(XPS)measurements demonstrated that thermal decomposition only occurred at the higher ***,a theoretical model was developed to deeply reveal the ultrafast dynamics of MoS_(2) *** simulation results were in good agreement with the temporal and spatial reflectivity distribution obtained from the *** electron and lattice temperature evolution was also obtained to prove the ablation *** results revealed ultrafast dynamics of MoS_(2) above the damage threshold and are helpful for understanding the interaction mechanism between MoS_(2) and intense ultrafast lasers,as well as for MoS_(2) processing applications.

关键词： intense molybdenum disulfide

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

Forest gaps regulate seed germination rate and radicle growth of an endangered plant species in a subtropical natural forest

引用

Plant Diversity 2022年第5期44卷 445-454页

作者： Jing Zhu lan jiang De-Huang Zhu Cong Xing Meng-Ran Jin Jin-Fu Liu Zhong-Sheng He Key Laboratory of Fujian Universities for Ecology and Resource Statistics College of ForestryFujian Agriculture and Forestry UniversityFuzhou350002China College of Ecology and Resources Engineering Wuyi UniversityWuyishanFujian354300China

The survival rate of Castanopsis kawakamii from seed to seedling is relatively low,leading to difficulties in the regeneration of its natural *** gaps play a vital role in plant regeneration and biodiversity maintenance in forest ***,our understanding of the effects of gap size and within-gap position on the seed germination and radicle growth of *** is still *** particular,our knowledge on the relationship between gap size and environmental factors and their influence on seed germination and radicle growth is *** the present study,we studied the influences of forest gaps and within-gap position on seed regeneration on the germination and radicle growth of an endangered species *** in a subtropical natural forest in *** selected three large gaps(LG,gap size above 200 m^(2)),three medium gaps(MG,gap size 50-100 m^(2)),three small gaps(SG,gap size 30-50 m^(2)),and non-gap(NG),and planted the seeds of *** in five positions within each *** results showed that(1)the influence of forest gaps on seed germination rate was,from highest to lowest,medium gaps(51%),non-gap(47%),small gaps(40%)and large gaps(17%),and the seed germination rate was the highest in all positions in medium gaps,with the exception of the east position.(2)Radicle length in forest gaps was,from highest to lowest,medium gaps,small gaps,large gaps and non-gap,and it was the highest in the east,south,west and north positions of medium gaps.(3)Canopy openness(gap size)and air temperature were the main factors influencing seed germination and radicle growth of *** concluded that medium-sized gaps were the most suitable for seed germination and radicle growth of ***,and they promote the regeneration of this endangered species in the investigated natural forest.

关键词： Forest gap Within-gap position Seed germination Radicle growth Castanopsis kawakamii

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 Galectin-9/Tim-3 pathway is involved in the regulation of NK cell function at the maternal-fetal interface in early pregnancy

引用

Cellular & Molecular Immunology 2016年第1期13卷 73-81页

作者： Yan-Hong Li Wen-Hui Zhou Yu Tao Song-Cun Wang Yun-lan jiang Di Zhang Hai-lan Piao Qiang Fu Da-Jin Li Mei-Rong Du Laboratory for Reproductive Immunology Hospital and Institute of Obstetrics and Gynecology Fudan University Shanghai Medical College Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases Shanghai China Medical Center for Human Reproduction Beijing Chaoyang HospitalCapital Medical University Beijing China Maternal and Child Care Hospital Of Huangpu District Shanghai China These authors contributed equally to this work

Decidual natural killer （dNK） cells actively participate in the establishment and maintenance of maternal-fetal immune tolerance and act as local guardians against infection. However, how dNK cells maintain the immune balance between tolerance and anti-infection immune responses during pregnancy remains unknown. Here, we demonstrated that the inhibitory molecule T-cell immunoglobulin domain and mucin domain-containing molecule-3 （Tim-3） are expressed on over 60% of dNK cells. Tim-3^＋ dNK cells display higher interleukin （IL）-4 and lower tumor necrosis factor （TNF）-α and perforin production. Human trophoblast cells can induce the transformation of peripheral NK cells into a dNK-like phenotype via the secretion of galectin-9 （Gal-9） and the interaction between Gal-9 and Tim-3. In addition, trophoblasts inhibit lipopolysaccharide （LPS）-induced pro-inflammatory cytokine and perforin production by dNK cells, which can be attenuated by Tim-3 neutralizing antibodies. Interestingly, a decreased percentage of Tim-3-expressing dNK cells were observed in human miscarriages and murine abortion-prone models. Moreover, T helper （Th）2-type cytokines were decreased and Thl-type cytokines were increased in Tim-3^＋ but not Tim-3- dNK cells from human and mouse miscarriages. Therefore, our results suggest that the Gal-9/Tim-3 signal is important for the regulation of dNK cell function, which is beneficial for the maintenance of a normal pregnancy.

关键词： cytotoxicity galectin-9/Tim-3 NK cells pregnancy Th2

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

The CBL-interacting protein kinase OsCIPK1 phosphorylated by SAPK10 positively regulates responses to ABA and osmotic stress in rice

引用

The Crop Journal 2024年第2期12卷 364-374页

作者： Caihua Qin Xing Fan Qianqian Fang lan Ni Mingyi jiang College of Life Sciences State Key Laboratory of Crop Genetics&Germplasm Enhancement and UtilizationKey Laboratory of Crop Physiology Ecology and Production ManagementMinistry of AgricultureNanjing Agricultural UniversityNanjing 210095JiangsuChina

SubclassⅢsucrose nonfermenting1-related protein kinase 2s(SnRK2s)function in ABA and abiotic stress responses by unknown *** found that osmotic stress/ABA-activated protein kinase 10(SAPK10),a member of rice SnRK2s,physically interacted with CBL-interacting protein kinase 1(OsCIPK1).OsCIPK1 expression was up-regulated by ABA and PEG treatment,and overexpression increased the ABA sensitivity of seed germination and root growth and plant osmotic stress *** stress or ABA-induced activation of OsCIPK1 is dependent on ***10 phosphorylates Thr-24 of OsCIPK1 in vitro,and this phosphorylation increases the activity of OsCIPK1 and positively regulates the function of OsCIPK1 in ABA responses and plant osmotic stress *** study suggests that OsCIPK1 is a direct phosphorylated substrate of SAPK10,and SAPK10-mediated phosphorylation of OsCIPK1 functions in ABA signaling and increases rice osmotic stress tolerance.

关键词： Rice ABA Osmotic stress OsCIPK1 SAPK10

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

Application of Bionic Technology in Marine Cruise Equipment:Research Progress and Development Trends

引用

Journal of Bionic Engineering 2024年第3期21卷 1117-1155页

作者： Kunhui Luo lan Yan Zhiyi Zhu Zhongqiu Wang Hongru Wang Feng jiang School of Electromechanical and Automation Huaqiao UniversityXiamen36102China National Local Joint Engineering Research Center for Intelligent Manufacturing Technology of Brittle Material Products Xiamen361021China Institute of Oceanographic Instrumentation Shandong Academy of SciencesQilu University of Technology(Shandong Academy of Sciences)Qingdao266100China Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment Technology Qingdao266100China National Engineering and Technological Research Center of Marine Monitoring Equipment Qingdao266100China Institute of Manufacturing Engineering Huaqiao UniversityXiamen361021China

This article provides an overview of the application of bionic technology in marine cruising equipment,discussing its research progress and future development *** cruising is a crucial means of gaining insights into the marine environment and conducting scientific ***,conventional marine cruising equipment faces numerous challenges when dealing with complex and ever-changing marine *** technology,as a means of drawing inspiration from the structure and functions of living organisms,offers new approaches and methods to address the challenges faced by marine cruising equipment and has found widespread *** article primarily focuses on the applications and historical developments of bionic technology in propulsion methods,drag reduction,and surface *** summarizes the design principles,manufacturing techniques,and optimization methods for marine biomimetic cruising ***,this paper analyzes the achievements,challenges,and future directions of bionic technology in marine cruising *** application of bionic technology in marine cruising equipment holds vast potential for development,enabling us to better confront the challenges of marine exploration and research by drawing wisdom from nature and driving advancements in marine science.

关键词： Marine cruising equipment Bionic technology Propulsion methods Drag reduction Surface antifouling

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

Thrombotic pulmonary embolism of inferior vena cava during caesarean section:A case report and review of the literature

引用

World Journal of Clinical Cases 2022年第13期10卷 4226-4235页

作者： lan jiang Wei-Xiang Liang Yi Yan Shou-Ping Wang Li Dai Dun-Jin Chen Department of Medical Ultrasound The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510150Guangdong ProvinceChina Department of Cardiology The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510150Guangdong ProvinceChina Department of Anesthesiology The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510015Guangdong ProvinceChina Department of Obstetrics and Gynecology The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510015Guangdong ProvinceChina

BACKGROUND Thrombotic pulmonary embolism(TPE)is one of the most critical diseases in obstetrics but is rarely reported in caesarean section(CS)because TPE patients in CS have a high risk of death and are difficult to *** case report of TPE during CS was recorded by transthoracic echocardiography(TTE)and can provide a reference for the differential diagnosis of critical illnesses in *** SUMMARY A 37-year-old pregnant woman with rheumatic heart disease(RHD),gravida 5 and para 1(G5P1),presented for emergency CS at 33 wk and 3 d of gestation under general anesthesia because of acute heart failure,pulmonary hypertension and *** placental removal during CS,TTE revealed a nascent thrombus in the inferior vena cava(IVC)that elongated,detached and fragmented leading to acute thromboembolic events and acute *** report presents the whole process and details of TPE during CS and successful rescue without any sequelae in the *** case gives us new ideas for the diagnosis of death or cardiovascular accidents during CS in pregnant women with heart disease and the detailed presentation of the rapid development of TPE may also elucidate new ideas for *** case also highlighted the importance of prophylactic anticoagulation in the management of heart disease during *** Pregnancy with heart failure could trigger inferior vena cava(IVC)-origin TPE during *** and timely treatment can avoid serious consequences.

关键词： Caesarean section Pulmonary embolism Thrombosis Heart failure Echocardiography Case report

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

Mechanisms of inclusion-induced pitting of stainless steels:A review

引用

Journal of Materials Science & Technology 2024年第1期168卷 143-156页

作者： Yangting Sun Xin Tan Rulei lan Guoyong Ran Jin Li Yiming jiang Department of Materials Science State Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai 200438China

Pitting is a common type of localized corrosion in passive alloys that can cause rapid failure of material or *** the case of stainless steels,non-metallic inclusions have been identified as the most susceptible sites for pitting,and have therefore garnered significant *** review critically ex-amines the issue of how inclusions induce pitting,with a particular focus on three mechanisms:sponta-neous dissolution of inclusions,active dissolution of Cr-depleted regions,and propagation of microcracks at the inclusion-matrix *** researchers have made significant strides in understanding these mechanisms over the past few decades,many gaps and controversies *** such as the ini-tial driving force of inclusion dissolution and factors affecting Cr-depleted regions require further ***,some old concepts and methods need to be revised to arrive at more credible *** review aims to delve deeply into these important issues and provide inspiration for future research.

关键词： Pitting Inclusion Stainless steel Localized corrosion MnS

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

Surface micro/nanostructure evolution of Au-Ag alloy nanoplates： Synthesis, simulation, plasmonic photothermal and surface-enhanced Raman scattering applications

引用

Nano Research 2016年第3期9卷 876-885页

作者： Hongmei Qian Meng Xu Xiaowei Li Muwei Ji Lei Cheng Anwer Shoaib Jiajia Liu lan jiang Hesun Zhu Jiatao Zhang ing 100081 China Laser Micro/Nano-Fabrication Laboratory School of Mechanical Engineering Beijing Institute of Technology Beijing 100081 China

This study reports the controllable surface roughening of Au-Ag alloy nanoplates via the galvanic replacement reaction between single-crystalline triangular Ag nanoplates and HAuC14 in an aqueous medium. With a combination of experimental evidence and finite element method （FEM） simulations, improved electromagnetic field （E-field） enhancement around the surface-roughened Au- Ag nanoplates and tunable light absorption in the near-infrared （NIR） region （-800-1,400 nm） are achieved by the synergistic effects of the localized surface plasmon resonance （LSPR） from the maintained triangular shape, the controllable Au-Ag alloy composition, and the increased surface roughness. The NIR light extinction enables an active photothermal effect as well as a high photothermal conversion efficiency （78.5%）. The well-maintained triangular shape, surface- roughened evolutions of both micro- and nanostructures, and tunable NIR surface plasmon resonance effect enable potential applications of the Au-Ag alloy nanoplates in surface-enhanced Raman spectroscopic detection of biomolecules through 785-nm laser excitation.

关键词： Au-Ag alloy nanoplates surface roughening finite element method(FEM) simulation photothermal surface enhanced Ramanscattering (SERS)

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

MoS_(2)core-shell nanoparticles prepared through liquid-phase ablation and light exfoliation of femtosecond laser for chemical sensing

引用

Science China(Technological Sciences) 2023年第3期66卷 853-862页

作者： ZUO Pei jiang lan LI Xin TIAN MengYao YUAN YongJiu HAN WeiNa MA Le HU LiFei HE ZhiCong LI Fang School of Mechanical and Electrical Engineering Hubei Key Laboratory of Optical Information and Pattern RecognitionSchool of Optical Information and Energy EngineeringWuhan Institute of TechnologyWuhan 430073China Laser Micro/Nano Fabrication Laboratory School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China

Molybdenum disulfide(MoS_(2))-based nanostructures are highly desirable for applications such as chemical and biological sensing,photo/electrochemical catalysis,and energy storage due to their unique physical and chemical *** this work,MoS_(2)core-shell nanoparticles were first prepared through the liquid-phase processing of bulk MoS2by a femtosecond *** core of prepared nanoparticles was incompletely and weakly crystalline MoS_(2);the shell of prepared nanoparticles was highly crystalline MoS_(2),which wrapped around the core layer by *** femtosecond laser simultaneously achieved liquid-phase ablation and light *** formation mechanism of the core-shell nanoparticles is to prepare the nanonuclei first by laser liquid-phase ablation and then the nanosheets by light exfoliation;the nanosheets will wrap the nanonuclei layer by layer through van der Waals forces to form core-shell *** MoS_(2)core-shell nanoparticles,because of Mo-S bond breakage and recombination,have high chemical activity for chemical ***,the nanoparticles were used as a reducing agent to directly prepare three-dimensional(3D)Au-MoS_(2)micro/nanostructures,which were applied as surface-enhanced Raman spectroscopy(SERS)substrates to explore chemical sensing *** ultrahigh enhancement factor(1.06×10^(11)),ultralow detection limit(10-13M),and good SERS adaptability demonstrate highly sensitive SERS activity,great ability of ultralow concentration detection,and ability to detect diverse analytes,*** work reveals the tremendous potential of 3D Au-MoS_(2)composite structures as excellent SERS substrates for chemical and biological sensing.

关键词： MoS_(2)core-shell nanoparticle femtosecond laser liquid-phase ablation light exfoliation 3D Au-MoS_(2)composite structure chemical sensing

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

Betavoltaic Battery Conversion Efficiency Improvement Based on Interlayer Structures

引用

Chinese Physics Letters 2012年第7期29卷 268-271页

作者： LI Da-Rang jiang lan YIN Jian-Hua TAN Yuan-Yuan LIN Nai Laser Micro/Nano Fabrication Laboratory School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081 National Center for Materials Service Safety University of Science and Technology BeijingBeijing 100083

Significant differences among the doping densities of PN junctions in semiconductors cause lattice mismatch and lattice defects that increase the recombination current of betavoltaic *** extensively decreases the open circuit voltage and the short current,which results in low conversion *** study proposes P+PINN+-structure based betavoltaic batteries by adding an interlayer to typical PIN structures to improve conversion *** simulations are conducted for the energy deposition of beta particles along the thickness direction in *** on this,63 Ni-radiation GaAs batteries with PIN and P+PINN+ structures are designed and fabricated to experimentally verify the proposed *** turns out that the conversion efficiency of the betavoltaic battery with the proposed P+ PINN+ structure is about 1.45 times higher than that with the traditional PIN structure.

关键词： Battery battery semiconductors

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

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：