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Efficient photon-pair generation in layer-poled lithium niobate nanophotonic waveguides

Light(Science & Applications) 2024年第11期13卷 2847-2856页

作者： Xiaodong Shi Sakthi Sanjeev Mohanraj Veerendra Dhyani Angela Anna Baiju Sihao Wang Jiapeng Sun Lin Zhou Anna Paterova Victor Leong di zhu A*STAR Quantum Innovation Centre(Q.InC) Institute of Materials Research and Engineering(IMRE)Agency for ScienceTechnology and Research(A*STAR)Singapore 138634Singapore Department of Physics National University of SingaporeSingapore 117542Singapore Department of Materials Science and Engineering National University of SingaporeSingapore 117575Singapore Centre for Quantum Technologies National University of SingaporeSingapore 117543Singapore

Integrated photon-pair sources are crucial for scalable photonic quantum ***-film lithium niobate is a promising platform for on-chip photon-pair generation through spontaneous parametric down-conversion(SPDC).However,the device implementation faces practical *** poled lithium niobate(PPLN),despite enabling flexible quasi-phase matching,suffers from poor fabrication reliability and device repeatability,while conventional modal phase matching(MPM)methods yield limited efficiencies due to inadequate mode ***,we introduce a layer-poled lithium niobate(LPLN)nanophotonic waveguide for efficient photon-pair *** leverages layer-wise polarity inversion through electrical poling to break spatial symmetry and significantly enhance nonlinear interactions for MPM,achieving a notable normalized second-harmonic generation(SHG)conversion efficiency of 4615%W^(−1)cm^(−2).Through a cascaded SHG and SPDC process,we demonstrate photon-pair generation with a normalized brightness of 3.1×10^(6)Hz nm^(−1)mW^(−2)in a 3.3 mm long LPLN waveguide,surpassing existing onchip sources under similar operating ***,our LPLN waveguides offer enhanced fabrication reliability and reduced sensitivity to geometric variations and temperature fluctuations compared to PPLN *** expect LPLN to become a promising solution for on-chip nonlinear wavelength conversion and non-classical light generation,with immediate applications in quantum communication,networking,and on-chip photonic quantum information processing.

关键词： waveguide waveguides lithium

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Crystallization Behavior and Mechanical Properties of Poly(vinylidene fluoride)/multi-walled Carbon Nanotube Nanocomposites

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Chemical Research in Chinese Universities 2010年第3期26卷 491-495页

作者： XU Yue ZHENG Wei-tao YU Wen-xue HUA Li-gui ZHANG Yu-jie ZHAO zhu-di Key Laboratory of Automobile Materials of Ministry of Edueation Test Science Experiment Center Jilin University Changchun 130012 P. R. China Jilin Province Product Quality Supervision Test Institute Changchun 130022 P R. China

Poly（vinylidene fluoride）（PVDF）/multi-walled carbon nanotube（MWCNT） nanocomposites were prepared by means of ultrasonic dispersion method. X-ray diffraction（XRD） results indicate that incorporating MWCNTs into PVDF caused the formation of β phase. A thermal annealing at 130 ℃ confirmed that the β phase was stable in the nanocomposites. differential scanning calorimetry（DSC） results indicate that the melting temperature slightly increased while the heat of fusion markedly decreased with increasing MWCNT content. The tensile strength and modulus of PVDF were improved by loading the MWCNTs. The scanning electron microscopy（SEM） observations showed that MWCNTs were uniformly dispersed in the PVDF matrix and an interfacial adhesion between MWCNT and PVDF was achieved, which was responsible for the enhancement in the tensile strength and modulus of PVDE.

关键词： Multi-walled carbon nanotube Poly(vinylidene fluoride) Composite Crystalline structure Mechanical property

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硬质粒子扰动对电铸铜微观结构与性能的影响

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中国有色金属学报 2006年第9期16卷 1558-1562页

作者：朱增伟朱荻南京航空航天大学机电工程学院南京210016

在铜的电铸过程中,通过陶瓷微珠等硬质粒子摩擦和扰动电铸层表面来改善电铸层的质量。对所制备的铜电铸层的表面形貌、织构等微观结构和显微硬度、抗腐蚀等性能进行测试和分析,并与传统方法所制备的铜电铸层相比较。结果表明:硬质粒子... 详细信息

在铜的电铸过程中,通过陶瓷微珠等硬质粒子摩擦和扰动电铸层表面来改善电铸层的质量。对所制备的铜电铸层的表面形貌、织构等微观结构和显微硬度、抗腐蚀等性能进行测试和分析,并与传统方法所制备的铜电铸层相比较。结果表明:硬质粒子在电铸过程中对电铸层表面的摩擦和扰动具有显著的除瘤和整平作用,使所制备的铜电铸层外观光亮平整,显著改变其微观结构和性能;铜电铸层各晶面的衍射强度降低,(200)晶面的择优程度减小,(111)晶面的择优程度增大;显微硬度值由HV156增至HV221;抗腐蚀性能显著提高,在NaCl溶液中的腐蚀速率降低了20%。

关键词：铜硬质粒子电铸电沉积结构性能

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The role of AFAP1-AS1 in mitotic catastrophe and metastasis of triple-negative breast cancer cells by activating the PLK1 signaling pathway

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Oncology Research 2023年第3期31卷 375-388页

作者： SHUIZHONG CEN XIAOJIE PENG JIANWEN DENG HAIYUN JIN ZHINAN DENG XIAOHUA LIN di zhu MING JIN YANWEN zhu PUSHENG ZHANG YUNFENG LUO HONGYAN HUANG Department of Spinal Surgery Orthopedic Medical CenterZhujiang HospitalSouthern Medical UniversityGuangzhou510280China Department of Critical Care Medicine Nanfang HospitalSouthern Medical UniversityGuangzhou510515China Department of Breast Surgery Zhujiang HospitalSouthern Medical UniversityGuangzhou510280China Department of Gynecology and Obstetrics Southern Hospital Taihe BranchSouthern Medical UniversityGuangzhou510540China Department of Clinical Medicine Nanshan ClassGuangzhou Medical UniversityGuangzhou511436China Department of Gastroenterology Shenzhen HospitalSouthern Medical UniversityShenzhen518110China

Triple-negative breast cancer(TNBC)is characterized by fast growth,high metastasis,high invasion,and a lack of therapeutic *** and metastasis of TNBC cells are two important biological behaviors in TNBC malignant *** is well known that the long noncoding RNA AFAP1-AS1 plays a crucial role in various tumors,but whether AFAP1-AS1 is involved in the mitosis of TNBC cells remains *** this study,we investigated the functional mechanism of AFAP1-AS1 in targeting Polo-like Kinase 1(PLK1)activation and participating in mitosis of TNBC *** detected the expression of AFAP1-AS1 in the TNBC patient cohort and primary cells by in situ hybridization(ISH),northern blot,fluorescent in situ hybridization(FISH)and cell nucleus/cytoplasm RNA fraction *** AFAP1-AS1 expression was negatively correlated with overall survival(OS),disease-free survival(DFS),metastasis-free survival(MFS)and recurrence-free survival(RFS)in TNBC *** explored the function of AFAP1-AS1 by transwell,apoptosis,immunofluorescence(IF)and patient-derived xenograft(PDX)models in vitro and in *** found that AFAP1-AS1 promoted TNBC primary cell survival by inhibiting mitotic catastrophe and increased TNBC primary cell growth,migration and ***,AFAP1-AS1 activated phosphorylation of the mitosis-associated kinase PLK1 *** levels of AFAP1-AS1 in TNBC primary cells increased PLK1 pathway downstream gene expression,such as CDC25C,CDK1,BUB1 and *** importantly,AFAP1-AS1 increased lung metastases in a mouse metastasis *** together,AFAP1-AS1 functions as an oncogene that activates the PLK1 signaling ***1-AS1 could be used as a potential prognostic marker and therapeutic target for TNBC.

关键词： TNBC AFAP1-AS1 Mitotic catastrophe Metastasis PLK1

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Profile of Dr. Jiaojun zhu

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Science China(Life Sciences) 2025年第2期68卷 311-313页

作者： zhu, Jiaojun

Dr. Jiaojun zhu is the director general of Institute of Applied Ecology(IAE), Chinese Academy of Sciences(CAS)(2018 to present). He received his B.S. degree in Forest Science from Shenyang Agricultural University, China in July 1987, and subsequently joined Institute of Forestry and Soil, CAS(now known as the IAECAS) to pursue his M.S. degree in *** graduation, he served as a research assistant and an associate research fellow in the IAE-CAS from 1990 to 1996.

关键词： Forest pursue assistant

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我国茶产业低碳化发展研究与实践进展

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中国茶叶 2025年第1期47卷 21-28页

作者：胡强唐晏朱迪张优王志博陈超陈富桥中国农业科学院茶叶研究所浙江杭州310008 犍为县农业技术推广中心四川犍为614400

“双碳”目标下,我国农业的绿色发展模式转型是实现碳达峰和碳中和目标的必然选择。茶业是农业固碳减排的重要领域之一,探索茶产业低碳化发展是践行国家“双碳”战略的重要抓手。文章从茶叶低碳研究进展、茶叶低碳生产的探索与研究、生... 详细信息

“双碳”目标下,我国农业的绿色发展模式转型是实现碳达峰和碳中和目标的必然选择。茶业是农业固碳减排的重要领域之一,探索茶产业低碳化发展是践行国家“双碳”战略的重要抓手。文章从茶叶低碳研究进展、茶叶低碳生产的探索与研究、生态低碳茶的认证与推广、茶园碳汇研究等方面,总结了我国利用茶园生态系统发挥其碳汇功能和推动茶产业绿色低碳发展的“双碳”研究与实践经验,分析了我国茶产业践行“双碳”战略中存在的不足,进而提出了推进我国茶产业低碳化发展的对策与建议,以期为我国茶产业高质量发展提供支撑与依据。

关键词： “双碳”战略茶产业生态低碳茶生态低碳认证对策建议

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Prediction of decline in shale gas well production using stable carbon isotope technique

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Frontiers of Earth Science 2021年第4期15卷 849-859页

作者： Shengxian ZHAO Shujuan KANG Majia ZHENG Shuangfang LU Yunfeng YANG Huanxu ZHANG Yongyang LIU Ziqiang XIA Chenglin ZHANG Haoran HU di zhu Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao 266580China School of Geosciences China University of Petroleum(East China)Qingdao 266580China Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Shale Gas Institute of PetroChina Southwest Oil&Gasfield Company Chengdu 610000China Suzhou Grand Energy Technology Ltd. Suzhou 215129China

Prediction of shale gas production is a challenging task because of the complex fracture-pore networks and gas flow mechanisms in shale *** methods,which are used in the industry to forecast the future production of shale gas,have not been assessed sufficiently to warrant high confidence in their *** carbon isotopic signals have been used for producing gas wells,and are controlled by physical properties and physics-controlling production;they serve as a unique indicator of the gas production ***,a workable process,which is combined with a gas isotope interpretation tool(also known as a numerical simulator),has been implemented in Longrnaxi shale gas wells to predict the production decline *** numerical simulator,which takes into account a convection-diffu-sion-adsorption model for the matrix and a convection model for fractures in^(13)CH_(4) and ^(12)CH_(4) isotopologues,was used to stabilize the carbon isotope variation in the produced gas to elucidate gas *** with the production rates of the four developing wells,the total reserves ranged from 1.72×10^(8) to 2.02×10^(8) m^(3),which were used to constrain the trend of two-segment produc-tion decline curves that exhibited a transition from a hyperbolic equation to an exponential one within 0.82-0.89 ***-segment production decline curves were used to forecast future production and estimate ultimate recovery.

关键词： shale gas production decline Longmaxi formation carbon isotope

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Postoperative body weight change and its influencing factors in patients with gastric cancer

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World Journal of Gastrointestinal Surgery 2024年第7期16卷 2242-2254页

作者： Yan Li Li-Hua Huang Hui-di zhu Ping He Bei-Bei Li Li-Jing Wen Department of Gastrointestinal Surgery The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina Department of Nursing The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina

BACKGROUND The high incidence and mortality of gastric cancer(GC)pose a significant threat to human life and health,and it has become an important public health challenge in *** weight loss is a common complication after surgical treatment in patients with GC and is associated with poor prognosis and GC ***,current attention to postoperative weight change in GC patients remains insufficient,and the descriptions of postoperative weight change and its influencing factors are also *** To investigate body weight changes in patients with GC within 6 mo after gastrectomy and identify factors that influence dynamic body weight *** We conducted a prospective longitudinal study of 121 patients with GC and collected data before(T0)and 1(T1),3(T2),and 6(T3)mo after gastrectomy using a general data questionnaire,psychological distress thermometer,and body weight *** general estimation equation(GEE)was used to analyze the dynamic trends of body weight changes and factors that influence body weight changes in patients with GC within 6 mo of *** The median weight loss at T1,T2,and T3 was 7.29%(2.84%,9.40%),11.11%(7.64%,14.91%),and 14.75%(8.80%,19.84%),*** GEE results showed that preoperative body mass index(BMI),significant psychological distress,religious beliefs,and sex were risk factors for weight loss in patients with GC within 6 mo after gastrectomy(Pdistress were more likely to lose weight than those without(β=2.490,P<0.001),and religious patients were less likely to lose weight 6 mo after gastrectomy than those without religious beliefs(β=-6.844,P=0.001).Compared to female patients,male patients were more likely to experience weight loss 6 mo after gastrectomy(β=4.262,P=0.038).CONCLUSION Male patients wi

关键词： Gastric cancer Gastrectomy Weight loss Influencing factors Body mass index

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Research on Customer Satisfaction of Power Supply Enterprise

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International English Education Research 2019年第3期 67-69页

作者： ZHANG Xing zhu di Department of Economic Management North China Electric Power UniversityBaoding 071003China

The time has come for all types of power generation groups and private capital to fully enter the electricity sales market. The competition for power sales is mainly reflected in the power supply service. So what is the current status of power supply enterprise services? To this point, this paper conducts a questionnaire survey on the satisfaction status of power supply services of some power users, and conducts statistics and analysis on its data, and establishes a customer satisfaction model for power supply enterprise services, and then uses weighted arithmetic average method to measure 152 online customers. The results of the satisfaction questionnaire are analyzed, and it is expected to provide reference for the power marketing system.

关键词： Customer service Power supply enterprise Weighted arithmetic average method customer satisfaction

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微细电解线切割加工模型分析与试验研究

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同济大学学报（自然科学版） 2009年第12期37卷 1658-1662页

作者：王昆朱荻同济大学机械工程学院上海201804 南京航空航天大学机电学院江苏南京210016

基于电化学原理,讨论微细电解线切割加工的机理,建立了加工的理论模型,得出微米尺度线电极进给速度的理论上限.通过电解线切割加工试验,分析各种加工参数对加工精度的影响规律,并加工出缝宽为20μm左右的微型桨叶结构.试验结果表明,微... 详细信息

基于电化学原理,讨论微细电解线切割加工的机理,建立了加工的理论模型,得出微米尺度线电极进给速度的理论上限.通过电解线切割加工试验,分析各种加工参数对加工精度的影响规律,并加工出缝宽为20μm左右的微型桨叶结构.试验结果表明,微细电解线切割加工技术能为特殊性能材料的微细加工提供有效的新途径.

关键词：微细电解线切割加工线电极理论模型试验研究

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