检索结果-南通市图书馆

Low-Temperature Fabrication of Stable Black-Phase CsPbI₃ Perovskite Flexible Photodetectors Toward Wearable Health Monitoring

引用

NANO-MICRO LETTERS 2025年第1期17卷 1-14页

作者： Zhao, yingjie Sun, yicheng Pei, Chaoxin yin, Xing li, Xinyi Hao, yi Zhang, Mengru Yuan, Meng Zhou, Jinglin Chen, Yu Song, Yanlin Zhengzhou Univ Coll Chem Zhengzhou 450001 Peoples R China Zhengzhou Univ Pingyuan Lab Zhengzhou 450001 Peoples R China Chinese Acad Sci Inst Chem Key Lab Green Printing Beijing 100190 Peoples R China Chinese Acad Sci Tech Inst Phys & Chem Key Lab Bioinspired Mat & Interfacial Sci Beijing 100190 Peoples R China Chinese Acad Sci Inst High Energy Phys Beijing 100049 Peoples R China

Low-temperature fabrication of black-phase CsPbI3 perovskite films is first demonstrated by using diphenylphosphinic chloride additive under 30-50 degrees C, arising from the steric effect and chloride insertion ***-area high-quality all-inorganic perovskite films with fewer defects enhanced crystallographic orientation, and excellent environmental stability is *** record performances are demonstrated for flexible wearable photodetectors with a responsivity of 42.1 A W-1, a detectivity of 1.3 x 1014 Jones, high-fidelity image, photoplethysmography sensor functions, and high mechanical stability. Flexible wearable optoelectronic devices fabricated from organic-inorganic hybrid perovskites significantly accelerate the development of portable energy, biomedicine, and sensing fields, but their poor thermal stability hinders further applications. Conversely, all-inorganic perovskites possess excellent thermal stability, but black-phase all-inorganic perovskite film usually requires high-temperature annealing steps, which increases energy consumption and is not conducive to the fabrication of flexible wearable devices. In this work, an unprecedented low-temperature fabrication of stable black-phase CsPbI3 perovskite films is demonstrated by the in situ hydrolysis reaction of diphenylphosphinic chloride additive. The released diphenyl phosphate and chloride ions during the hydrolysis reaction significantly lower the phase transition temperature and effectively passivate the defects in the perovskite films, yielding high-performance photodetectors with a responsivity of 42.1 A W-1 and a detectivity of 1.3 x 1014 Jones. Furthermore, high-fidelity image and photoplethysmography sensors are demonstrated based on the fabricated flexible wearable photodetectors. This work provides a new perspective for the low-temperature fabrication of large-area all-inorganic perovskite flexible optoelectronic devices.

关键词： In situ hydrolyzation Low-temperature processing All-inorganic perovskite Flexible photodetectors Health monitoring

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

艾司西酞普兰治疗伴随焦虑症状抑郁症的随机对照临床研究

引用

中国新药与临床杂志 2010年第12期29卷 919-922页

作者：李妍沈一峰李静许秀峰高成阁李华芳上海交通大学医学院附属精神卫生中心上海200030

目的评价艾司西酞普兰治疗伴焦虑症状抑郁症的疗效和安全性。方法采用随机、双盲、西酞普兰平行对照的设计方法。48例患者随机分为艾司西酞普兰组(10～20 mg.d-1)和西酞普兰组(20～40 mg.d-1),每组24例,疗程为6 wk。在治疗前以及wk 1、2... 详细信息

目的评价艾司西酞普兰治疗伴焦虑症状抑郁症的疗效和安全性。方法采用随机、双盲、西酞普兰平行对照的设计方法。48例患者随机分为艾司西酞普兰组(10～20 mg.d-1)和西酞普兰组(20～40 mg.d-1),每组24例,疗程为6 wk。在治疗前以及wk 1、2、4、6末进行汉密尔顿抑郁量表17项(HAMD17)、汉密尔顿焦虑量表(HAMA)及临床总体印象量表(CGI)等评定。安全性指标包括不良反应观察、实验室和心电图检查等。结果 2组HAMD17评分和HAMA评分在各时间点与基线比较均显著下降(P0.05)。艾司西酞普兰组和西酞普兰组的治疗有效率分别为70%和89%,组间无显著差异(P>0.05);不良反应发生率分别为12%和42%,组间有显著差异(P<0.05)。结论艾司西酞普兰治疗伴随焦虑症状的抑郁症有效、安全。

关键词：艾司西酞普兰抑郁症焦虑随机对照试验西酞普兰

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

维持性血液透析患者C-反应蛋白和心血管疾病的关系

引用

肾脏病与透析肾移植杂志 2003年第6期12卷 530-533页

作者：左力王梅杜卉沈毅杨莉王海燕冯丽丽北京大学第一医院肾内科北京100034

目的:评价维持性血液透析(MHD)患者C-反应蛋白(CRP)的稳定性以及和心血管疾病的关系。方法:选择在我院血液透析中心治疗的MHD患者41例,所有患者年龄18岁以上;均稳定透析3个月以上;无活动性风湿性疾病;无肿瘤证据或肿瘤术后无肿瘤复发... 详细信息

目的:评价维持性血液透析(MHD)患者C-反应蛋白(CRP)的稳定性以及和心血管疾病的关系。方法:选择在我院血液透析中心治疗的MHD患者41例,所有患者年龄18岁以上;均稳定透析3个月以上;无活动性风湿性疾病;无肿瘤证据或肿瘤术后无肿瘤复发证据;预计1年内不进行肾移植;可能影响血清CRP的药物(非类固醇类消炎药、血管紧张素转换酶抑制剂、他汀类降脂药等)维持不变。记录所有患者的心血管疾病病史、性别、年龄、血压、身高、体重、使用的透析膜类型,同时透析前采血白蛋白、前白蛋白、尿素、血清总胆固醇、低密度脂蛋白、纤维蛋白原和CRP、透析后采血测定血浆尿素和下次透析前尿素,计算Kt/V和nPCR。1年后重复体重和CRP测定。采血时机在1个月内无临床显性感染。评价CRP的稳定性以及和心血管疾病/死亡的关系。结果:两次CRP测定呈显著相关性(pearson r=0.6661, P<0.01),且有上升趋势。CRP升高组患者持续处于较高水平,其心血管疾病比例(7/8)和死亡比例(4/8)明显高于CRP正常组(分别为3/33和4/33)。死亡的主要原因是心力衰竭和脑出血。结论:MHD患者持续存在不同强度的慢性炎症状态,其血清CRP有上升趋势,慢性炎症状态是心血管疾病和死亡的强预测因素。

关键词：维持性血液透析 C-反应蛋白心血管疾病脑出血慢性炎症促红细胞生成素

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

Wavelets and framelets from dual pseudo splines

引用

Science China Mathematics 2011年第6期54卷 1233-1242页

作者： shen yi li Song Department of Mathematics Zhejiang University Hangzhou 310027 China

Dual pseudo splines constitute a new class of refinable functions with B-splines as special *** this paper,we shall construct Riesz wavelet associated with dual pseudo ***,we use dual pseudo splines to construct tight... 详细信息

关键词： dual pseudo splines Riesz wavelet basis tight wavelet frame

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

Rectangle Attack Against Type-I Generalized Feistel Structures

引用

Chinese Journal of Electronics 2022年第4期31卷 713-720页

作者： ZHANG yi liU Guoqiang shen Xuan li Chao College of liberal Arts and Sciences National University of Defense Technology Hunan Engineering Research Center of Commercial Cryptography Theory and Technology Innovation State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences College of Information and Communication National University of Defense Technology

Type-I generalized Feistel networks(GFN) are widely used frameworks in symmetric-key primitive designs such as CAST-256 and Lesamnta. Different from the extensive studies focusing on specific block cipher instances, the analysis against Type-I GFN structures gives generic security evaluation of the basic frameworks and concentrates more on the effect of linear transformation. Currently, works in this field mainly evaluate the security against impossible differential attack,zero-correlation linear attack, meet-in-the-middle attack and yoyo game attack, while its security evaluation against rectangle attack is still missing. In this paper, we filled this gap and gave the first structural analytical results of Type-I GFN against rectangle attack. By exploiting its structural properties, we proved there exists a boomerang switch for Type-I GFN for the first time,which is independent of the round functions. Then we turned the boomerang switch into chosen plaintext setting and proposed a new rectangle attack model. By appending 1 more round in the beginning of the boomerang switch, we constructed a rectangle distinguisher and a key recovery attack could be performed.

关键词： Block cipher structures Rectangle attack Boomerang switch Structural attack Generalized Feistel networks

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Enhanced afterglow performance of CaAl_(2)O_(4):Eu^(2+),Nd^(3+) phosphors by co-doping Gd^(3+)

引用

Journal of Rare Earths 2021年第8期39卷 930-937页

作者： Mingxi Zhang Fengfeng li Yongcheng lin Yan li yi shen light Alloy Research Institute of Central South University Changsha 410083China Key Laboratory of Inorganic Nonmetallic Materials Hebei Province Key Laboratory of Environment Functional Materials of Tangshan CityCollege of Materials Science and EngineeringNorth China University of Science and TechnologyTangshan 063210China School of Mechanical and Electrical Engineering.Central South University Changsha 410083China

In order to effectively improve the afterglow properties of CaAl_(2)O_(4):Eu^(2+),Nd^(3+) phosphors,a series of Ca_(0.982-x)Al_(2)O_(4):0.012 Eu^(2+),0.006 Nd^(3+),xGd^(3+)(x=0,0.012,0.024,0.036,0.048,0.060 mol) phosphors were prepared by a high-temperature solid-phase *** composition and microstructure were characterized by XRD,TEM,HRTEM,and XPS,luminescence properties were systematically analyzed by fluorescence spectra,afterglow decay curves and TL glow *** show that all of Ca_(0.982-x)Al_(2)O_(4):0.012 Eu^(2+),0.006 Nd^(3+),xGd^(3+)phosphors belong to monoclinic CaAl_(2)O_(4),without other cystalline *** blue emission at 442 nm is observed,which is assigned to the 4f^(6)5 d→4f^(7) transition of Eu^(2+) *** with appropriate amount of Gd^(3+) ions(x=0.036 mol) significantly improves the afterglow properties of phosphors,but the excessive doping of Gd^(3+) induces the fluorescent *** doping of moderate Gd^(3+) changes the traps states,the trap depth varies from 0.598 to 0.644 eV and the trap concentration is also greatly improved,thus significantly improving afterglow performance.

关键词： CaAl_(2)O_(4):Eu^(2+),Nd^(3+) Gd^(3+)ions Afterlow Trap depth Mechanism Rare earths

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

Formation mechanism and mechanical properties of surface nanocrystallized Ti-6Al-4V alloy processed by surface mechanical attrition treatment

引用

Rare Metals 2023年第4期42卷 1343-1352页

作者： yi-Feng li Cheng Chen J.Ranabhat yi-Fu shen College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing210016China

In the present work,surface mechanical attrition treatment(SMAT)was proposed to achieve surface nanocrystallization on Ti-6Al-4V surface via high-energy planetary ball milling method using a planetary ball *** characteristics of microstructure were studied using different *** nanocrystallization is achieved on Ti-6Al-4V *** process of refinement could be summarized into four *** the refinement process,the reticular continuous beta phase performs a significant role,it cracked,broke up and moved to each side along the grain *** movement of beta grains has the capabilities of effectively optimizing the grain orientation and accelerating the further refinement of alpha *** also plays an important role during the *** grain orientation between different types of grains seems to be larger than that of same type *** interface will be divided into smaller nanocrystalline grains once the dislocation density breaks the ***,the balance will be achieved again and owns a higher critical value which cannot be broken,then a stable grain size can be achieved *** results of microhardness,friction coefficient and wear mass loss tests of SMAT samples indicate that the mechanical behaviors of substrate are greatly enhanced after this novel SMAT treatment.

关键词： Surface nanocrystallization Dual-phase titanium alloy SMAT Mechanical properties

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

Inhibitory gamma-aminobutyric acidergic neurons in the anterior cingulate cortex participate in the comorbidity of pain and emotion

引用

Neural Regeneration Research 2025年第10期20卷 2838-2854页

作者： Lu Guan Mengting Qiu Na li Zhengxiang Zhou Ru Ye liyan Zhong Yashuang Xu Junhui Ren yi liang Xiaomei Shao Jianqiao Fang Junfan Fang Junying Du Department of Neurobiology and Acupuncture Research Third School of Clinical MedicineZhejiang Chinese Medical UniversityHangzhouZhejiang ProvinceChina Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases Third School of Clinical MedicineZhejiang Chinese Medical UniversityHangzhouZhejiang ProvinceChina Fuchun Community Health Service Center of Fuyang District HangzhouZhejiang ProvinceChina

Pain is often comorbid with emotional disorders such as anxiety and *** of the anterior cingulate cortex has been implicated in pain and pain-related negative emotions that arise from impairments in inhibitory gamma-aminobutyric acid *** review primarily aims to outline the main circuitry(including the input and output connectivity)of the anterior cingulate cortex and classification and functions of different gamma-aminobutyric acidergic neurons;it also describes the neurotransmitters/neuromodulators affecting these neurons,their intercommunication with other neurons,and their importance in mental comorbidities associated with chronic pain *** understanding on their role in pain-related mental comorbidities may facilitate the development of more effective treatments for these ***,the mechanisms that regulate gamma-aminobutyric acidergic systems remain *** is also unclear as to whether the mechanisms are presynaptic or *** exploration of the complexities of this system may reveal new pathways for research and drug development.

关键词： anterior cingulate cortex anxiety chronic pain circuit communication comorbidity depression gamma-aminobutyric acidergic neurons parvalbumin neurons synaptic transmission

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

Noise level estimation method with application to EMD-based signal denoising

引用

Journal of Systems Engineering and Electronics 2016年第4期27卷 763-771页

作者： Xiaoyu li Jing Jin yi shen yipeng liu School of Astronautics Harbin Institute of Technology College of Information Engineering Zhejiang University of Technology

This paper proposes a new signal noise level estimation approach by local regions. The estimated noise variance is applied as the threshold for an improved empirical mode decomposition（EMD） based signal denoising method. The proposed estimation method can effectively extract the candidate regions for the noise level estimation by measuring the correlation coefficient between noisy signal and a Gaussian filtered signal. For the improved EMD based method, the situation of decomposed intrinsic mode function（IMFs） which contains noise and signal simultaneously are taken into account. Experimental results from two simulated signals and an X-ray pulsar signal demonstrate that the proposed method can achieve better performance than the conventional EMD and wavelet transform（WT） based denoising methods.

关键词： signal denoising empirical mode decomposition(EMD) Gaussian filter correlation coefficient noise level estimation

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

Deformation monitoring and remote analysis of ultra-deep underground space excavation

引用

Underground Space 2023年第1期8卷 30-44页

作者： Bangke Ren yi shen Tengteng Zhao Xiaojun li Department of Geotechnical Engineering College of Civil EngineeringTongji UniversityShanghai 200092China State Key Laboratory of Disaster Reduction in Civil Engineering Tongji UniversityShanghai 200092China Shanghai SMI Water Group Co. Ltd.888 Guilin RoadChina

The development and utilization of urban underground space is producing many deep foundation ***-site monitoring is a key issue to ensure the safety of the foundation excavation,especially the monitoring of the lateral displacement of the *** ultra-deep circular foundation excavation project(58.65 m deep,the deepest foundation pit in Shanghai)in the test section of the Suzhou River deep tunnel is one of the most challenging engineering around the *** distributed optical fiber monitoring technology of Brillouin optical frequency domain analysis(BOFDA)was employed to monitor the lateral displacement of the deep *** monitoring process lasted for 14 months,and a total of 19 times of monitoring was carried out following the progress of the excavation of the foun-dation *** paper introduces the process,methods and precautions of optical fiber monitoring from early installation,equipment debugging to data acquisition,data processing and data *** comparing the fiber monitoring data with the manual monitoring data,the deformation of the deep foundation excavation is *** analysis results not only obtain the deformation law of ultra-deep foundation excavation,but also prove the advantages of optical fiber monitoring in deep foundation ***,with the support of the Smart Infrastructure Service System(iS3),the research combines optical fiber monitoring with an information *** the framework of the iS3 platform,an integrated data processing and analysis module for fiber monitoring is developed,and the feasibility of remote real-time collection and analysis of monitoring data is *** the support of the information platform,the monitoring data can be transmitted back to the computer terminal to realize remote monitoring.

关键词： Ultra-deep foundation excavation Remote analysis Fiber monitoring IS3

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：