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Triplet management for room-temperature continuous-wave perovskite lasers

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Science China Chemistry 2021年第1期64卷 1-2页

作者： Haiyun dong Yong-sheng Zhao Key Laboratory of Photochemistry Institute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

Over the past sixty years,lasers have undergone substantial developments and have revolutionized sciences,technologies,and *** particular,the invention of compact semiconductor lasers has made this technology an integral part of everyday *** halide perovskites have recently emerged as an outstanding class of semiconductors holding great potentials in further advancing the laser technology[1].

关键词： everyday perovskite sixty

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可干预因素与关节运动损伤的因果关系

中国组织工程研究 2025年第9期29卷 1953-1962页

作者：董婷婷陈天鑫李妍张晟张磊中国中医科学院望京医院骨关节四科北京市100102

背景:生活方式、代谢特征及营养摄入等干预因素与关节运动损伤的因果关系逐渐得到临床研究的重视,然而可干预因素与关节运动损伤的因果关系尚不明确。目的:运用孟德尔随机化的方法,探讨可干预因素与关节运动损伤的因果关系,为运动损伤... 详细信息

背景:生活方式、代谢特征及营养摄入等干预因素与关节运动损伤的因果关系逐渐得到临床研究的重视,然而可干预因素与关节运动损伤的因果关系尚不明确。目的:运用孟德尔随机化的方法,探讨可干预因素与关节运动损伤的因果关系,为运动损伤预防提供依据。方法:从公开数据库获取可干预因素和关节运动损伤的GWAS数据集,运用逆方差加权法、MR-Egger法、加权中位数法探讨生活方式、代谢特征、营养摄入与关节运动损伤的因果关系。敏感性分析方面,采用Cochran’s Q检验、MR-Egger回归、留一法和MR-PRESSO,以验证结果的稳定性和可靠性。结果与结论:①生活方式方面,咖啡(OR=0.29,95%CI:0.10-0.79,P=0.016)、茶消耗量(OR=0.41,95%CI=0.19-0.85,P=0.017)与足踝关节运动损伤风险下降,咖啡消耗量(OR=3.31,95%CI=1.02-10.73,P=0.046)与肩关节运动损伤风险上升具有潜在因果关系;从未吸烟(OR=0.78,95%CI=0.70-0.87,P=1.49×10^(-5))与足踝关节运动损伤风险下降具有显著因果关系。②代谢特征方面,钙水平(OR=0.88,95%CI=0.79-0.98,P=0.017)与手腕关节运动损伤风险下降具有潜在因果关系。③营养摄入方面,维生素A摄入(OR=1.08,95%CI:1.02-1.13,P=0.007)与膝关节运动损伤风险增加具有潜在因果关系。④敏感性分析方面,Cochran’s Q检验显示存在异质性(P0.05),留一法显示逐个剔除单核苷酸多态性后,结果具有稳定性。⑤此研究初步揭示生活方式、代谢特征及营养摄入等可干预因素对关节运动损伤风险的影响,为关节运动损伤的预防提供研究证据与研究方向。

关键词：孟德尔随机化关节运动损伤可干预因素生活方式代谢特征营养摄入因果关系敏感性分析

SiamCPN:Visual tracking with the Siamese center-prediction network

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Computational Visual Media 2021年第2期7卷 253-265页

作者： dong Chen Fan tang Weiming dong Hanxing Yao Changsheng Xu School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100040China NLPR Institute of AutomationChinese Academy of SciencesBeijing 100190China School of Artificial Intelligence Jilin UniversityChangchun 130012China CASIA-LLVISION Joint Lab Beijing 100190China LLVISION Technology Co. LTD.Beijing 100190China

Object detection is widely used in object tracking;anchor-free object tracking provides an end-to-end single-object-tracking *** this study,we propose a new anchor-free network,the Siamese center-prediction network(SiamCPN).Given the presence of referenced object features in the initial frame,we directly predict the center point and size of the object in subsequent frames in a Siamese-structure network without the need for perframe post-processing *** other anchor-free tracking approaches that are based on semantic segmentation and achieve anchor-free tracking by pixel-level prediction,SiamCPN directly obtains all information required for tracking,greatly simplifying the model.A center-prediction sub-network is applied to multiple stages of the backbone to adaptively learn from the experience of different branches of the Siamese *** model can accurately predict object location,implement appropriate corrections,and regress the size of the target bounding *** to other leading Siamese networks,SiamCPN is simpler,faster,and more efficient as it uses fewer *** demonstrate that our method outperforms other leading Siamese networks on GOT-10K and UAV123 benchmarks,and is comparable to other excellent trackers on LaSOT,VOT2016,and OTB-100 while improving inference speed 1.5 to 2 times.

关键词： s Siamese network single object tracking anchor-free center point detection

Effect of BCP ultrathin layer on the performance of organic light-emitting devices

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Optoelectronics Letters 2008年第5期4卷 317-320页

作者： WANG Hong YU Jun-sheng LI Lu tang Xiao-qing JIANG Ya-dong School of Optoelectronic Information State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 China

Based on conventional double layer device, triple layer organic light-emitting diodes (OLEDs) with two heterostructures of indium-tin oxide (ITO)/N,N'-diphenyl-N,N'-bis(1-naphthyl)(1,1'-biphenyl)-4,4'-diamine(NPB)/2,9-dimethyl-4,7-diphenyl- 1,10-phenanthroline (BCP)/ 8-Hydroxyquinoline aluminum (Alq3)/Mg:Ag using vacuum deposition method have been fabricated. The influence of different film thickness of BCP layer on the performance of OLEDs has been investigated. The results showed that when the thickness of the BCP layer film gradually varied from 0.1 nm to 4.0 nm, the electrolumines- cence (EL) spectra of the OLEDs shifted from green to greenish-blue to blue, and the BCP layer acted as the recombination region of charge carriers related to EL spectrum, enhancing the brightness and power efficiency. The power efficiency of OLEDs reached as high as 7.3 lm/W.

关键词：电致发光器件超薄层 OLEDs 异质结构

A Coverage Optimization Algorithm for Underwater Acoustic Sensor Networks based on Dijkstra Method

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IEEE/CAA Journal of Automatica Sinica 2023年第8期10卷 1769-1771页

作者： Meiqin tang Jiawen sheng Shaoyan Sun the School of Mathematics and Statistic Science Ludong UniversityYantai 264000China

Dear Editor,This letter presents a coverage optimization algorithm for underwater acoustic sensor networks(UASN)based on Dijkstra *** to the particularity of underwater environment,the multipath effect and channel are easily disturbed,resulting in more node energy *** the energy is exhausted,the network transmission stability and network connectivity will be affected.

关键词： network multipath Dijkstra

Giant complex hepatic cyst causing pseudocystitis:A case report

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World Journal of Clinical Cases 2023年第33期11卷 8030-8037页

作者： Song Li Jie tang De-sheng Ni A-dong Xia Guo-Liang Chen Department of Hepatobilary Pancreatic Gastrointestinal Surgery Jinhua People's HospitalJinhua 321000Zhejiang ProvinceChina Department of General Surgery The Second Affiliated Hospital of Bengbu Medical CollegeBengbu 233000Anhui ProvinceChina Anhui Key Laboratory of Tissue Transplantation Bengbu Medical CollegeBengbu 233000Anhui ProvinceChina

BACKGROUND Hepatic cysts are common benign liver tumors that are typically ***,larger cysts,particularly giant liver cysts,can potentially induce *** the diameter of the cyst exceeds 10 cm,it can exert pressure on adjacent organs,leading to manifestations of corresponding ***,we report the case of a complex giant hepatic cyst that caused *** SUMMARY A 16-year-old girl was admitted to our hospital with frequent and urgent *** revealed no obvious uterine adnexal abnormalities but showed a hypoechoic,cystic mass(173 mm×84 mm×138 mm)with clear boundaries,and an unclear blood flow signal in the abdominal cavity(extending from the lower edge of the left lobe of liver to the upper edge of the bladder).Abdominal contrast-enhanced computed tomography revealed a giant cystic mass in the abdominal and pelvic cavities,possibly originating from the liver,and a small amount of free fluid in the pelvic cavity,which subsequent magnetic resonance imaging *** imaging characteristics were consistent with a benign *** patient underwent laparoscopic resection of the giant liver cyst with partial liver ***-surgery her symptoms urinary symptoms were relieved completely and she was discharged on the sixth postoperative *** Our patient presented with symptoms suggestive of pseudocystitis,stressing the need for considering possibilities of other etiologies and differential diagnoses.

关键词： Giant hepatic cyst Pseudocystitis Symptoms Case report

Structural simplification: an efficient strategy in lead optimization

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Acta Pharmaceutica Sinica B 2019年第5期9卷 880-901页

作者： shengzheng Wang Guoqiang dong Chunquan sheng Department of Medicinal Chemistry School of PharmacySecond Military Medical UniversityShanghai200433China Department of Medicinal Chemistry and Pharmaceutical Analysis School of PharmacyFourth Military MedicalUniversityXi’an710032China

The trend toward designing large hydrophobic molecules for lead optimization is often associated with poor drug-likeness and high attrition rates in drug discovery and development. Structural simplification is a powerful strategy for improving the efficiency and success rate of drug design by avoiding 'molecular obesity'. The structural simplification of large or complex lead compounds by truncating unnecessary groups can not only improve their synthetic accessibility but also improve their pharmacokinetic profiles, reduce side effects and so on. This review will summarize the application of structural simplification in lead optimization. Numerous case studies, particularly those involving successful examples leading to marketed drugs or drug-like candidates, will be introduced and analyzed to illustrate the design strategies and guidelines for structural simplification.

关键词： Structural simplification Lead optimization Drug discovery Drug design Reducing rings number Reducing chiral centers Structure-based simplification Pharmacophore-based simplification

Effects of Heat-treatment on Microstructure and Magnetic Properties of Ba Ferrite Ultrafine Powders Prepared by Sol-gel

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材料热处理学报 2004年第5期25卷 288-290页

作者： KONGXiao-dong ZhuMei-wu ZHENGJia-sheng BasicDepartment NavalUniversityofEngineeringWuhanChina MaterialsCollege HuazhongUniversityofScienceandTechnologyWuhanChina

Barium (Bag) ferrite ultra fine powders were synthesized by using sol-gel in which polyethylene glycol 200(PEG200) was used as gelling agent. The transition of Ba ferrite was studied by thermal gravimetric and differential thermal analysis (TG-DTA) technology. The micro structural changes were analyzed using X-ray diffraction (XRD) and atomic force microscopy (AFM) for the specimens annealed at different temperatures. The transition temperatures were 414.55°C and separately corresponding to BaFe2O4 and BaFe,2O19. There were three types of microstructures for Ba ferrite ultrafine powder specimen annealed at 800°C. For the specimens annealed at different temperatures, there were different kinds of Ba ferrites. The ferrite powder consists of BaFet2O19 and BaFe2O4 for the specimen annealed at 800°C, and only BaFe^O^ can be found in the specimen annealed at 1000°C. The magnetic properties, a , and H c of BaFC|2O19 ultrafine powders are different from that of BaFe12O19 bulk material.

关键词：显微结构钡铁氧体超细粉未 AFM 磁性

Microglial Calcium Homeostasis Modulator 2:Novel Anti-neuroinflammation Target for the Treatment of Neurodegenerative Diseases

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Neuroscience Bulletin 2024年第4期40卷 553-556页

作者： Yuan dong Li tang Neuropsychiatry Research Institute The Affiliated Hospital of Qingdao UniversityQingdao UniversityQingdao266000China Qingdao Institute of Measurement Technology Qingdao266000China

Neurodegenerative diseases,including Alzheimer's disease(AD)and Parkinson's disease(PD),are the most common causes of *** drugs for such diseases can only provide temporary help with the symptoms,leaving the discovery of new drugs urgently in *** cells are the local immune cells in the nervous system and have been recognized as the key player in neuroinflammation that contributes to the process of neurodegeneration[1],raising the discussion of aiming microglia as the therapeutic target for clinical treatment of neurodegenerative diseases.

关键词： inflammation degenerative drugs