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Coherent optical frequency transfer via 972-km fiber link 被引量:1
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作者 邓雪 张翔 +8 位作者 臧琦 焦东东 王丹 刘杰 高静 许冠军 董瑞芳 刘涛 张首刚 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第2期277-282,共6页
We demonstrate coherent optical frequency dissemination over a distance of 972 km by cascading two spans where the phase noise is passively compensated for.Instead of employing a phase discriminator and a phase lockin... We demonstrate coherent optical frequency dissemination over a distance of 972 km by cascading two spans where the phase noise is passively compensated for.Instead of employing a phase discriminator and a phase locking loop in the conventional active phase control scheme,the passive phase noise cancellation is realized by feeding double-trip beat-note frequency to the driver of the acoustic optical modulator at the local site.This passive scheme exhibits fine robustness and reliability,making it suitable for long-distance and noisy fiber links.An optical regeneration station is used in the link for signal amplification and cascaded transmission.The phase noise cancellation and transfer instability of the 972-km link is investigated,and transfer instability of 1.1×10^(-19)at 10^(4)s is achieved.This work provides a promising method for realizing optical frequency distribution over thousands of kilometers by using fiber links. 展开更多
关键词 optical frequency transfer fiber link phase noise cancellation
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广州市痴呆共病患者疾病直接经济负担及影响因素分析
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作者 鲁正盈 白雨鑫 +4 位作者 高婧 李春 周尚成 李旻茜 黄婷 《阿尔茨海默病及相关病杂志》 2024年第4期260-267,共8页
目的:分析广州市痴呆共病患者直接经济负担及其影响因素,为痴呆共病患者的经济成本测算与家庭照护负担评估提供参考依据。方法:采用自编问卷,收集广州市痴呆共病患者社会人口学特征、治疗情况、疾病直接经济负担等情况;使用Charlson查... 目的:分析广州市痴呆共病患者直接经济负担及其影响因素,为痴呆共病患者的经济成本测算与家庭照护负担评估提供参考依据。方法:采用自编问卷,收集广州市痴呆共病患者社会人口学特征、治疗情况、疾病直接经济负担等情况;使用Charlson查尔森合并症指数(charlson comorbidity index,CCI)评估共病负担;使用直接法估算直接经济负担费用,经正态性检验服从偏态分布,对数转换使其呈近似正态化后应用于多元线性回归模型。结果:广州市痴呆共病患者过去1年产生的人均直接经济负担费用为7180.00(3600.00,15568.67)元,其中人均直接医疗费用为6150.00(3185.00,12590.00)元,人均直接非医疗费用为0.00(0.00,2082.50);CCI共病负担指数为5.00(5.00,6.00),共病负担与直接经济负担均较重。多元线性回归结果显示疾病直接经济负担的主要影响因素为患者所在区域、就诊地点、合并慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)或老年慢性支气管炎、合并心脏病及服用痴呆药物种类。结论:广州市痴呆共病患者直接经济负担较重,影响因素具有多维度与复杂性的特征,需要政府、社会和医疗机构等多方面共同努力与探索。 展开更多
关键词 痴呆共病 影响因素 直接经济负担 广州市
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A theoretical framework for improved fire suppression by linking management models with smart early fire detection and suppression technologies
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作者 Li Meng Jim O’Hehir +2 位作者 jing gao Stefan Peters Anthony Hay 《Journal of Forestry Research》 SCIE EI CAS CSCD 2024年第5期1-13,共13页
Bushfires are devastating to forest managers,owners,residents,and the natural environment.Recent tech-nological advances indicate a potential for faster response times in terms of detecting and suppressing fires.Howev... Bushfires are devastating to forest managers,owners,residents,and the natural environment.Recent tech-nological advances indicate a potential for faster response times in terms of detecting and suppressing fires.However,to date,all these technologies have been applied in isola-tion.This paper introduces the latest fire detection and sup-pression technologies from ground to space.An operations research method was used to assemble these technologies into a theoretical framework for fire detection and suppres-sion.The framework harnesses the advantages of satellite-based,drone,sensor,and human reporting technologies as well as image processing and artificial intelligence machine learning.The study concludes that,if a system is designed to maximise the use of available technologies and carefully adopts them through complementary arrangements,a fire detection and resource suppression system can achieve the ultimate aim:to reduce the risk of fire hazards and the dam-age they may cause. 展开更多
关键词 Forest fire Resource suppression Smart fire detection and suppression system Forest fire management Holistic system
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Knowledge-reused transfer learning for molecular and materials science
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作者 An Chen Zhilong Wang +6 位作者 Karl Luigi Loza Vidaurre Yanqiang Han Simin Ye Kehao Tao Shiwei Wang jing gao Jinjin Li 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第11期149-168,共20页
Leveraging big data analytics and advanced algorithms to accelerate and optimize the process of molecular and materials design, synthesis, and application has revolutionized the field of molecular and materials scienc... Leveraging big data analytics and advanced algorithms to accelerate and optimize the process of molecular and materials design, synthesis, and application has revolutionized the field of molecular and materials science, allowing researchers to gain a deeper understanding of material properties and behaviors,leading to the development of new materials that are more efficient and reliable. However, the difficulty in constructing large-scale datasets of new molecules/materials due to the high cost of data acquisition and annotation limits the development of conventional machine learning(ML) approaches. Knowledgereused transfer learning(TL) methods are expected to break this dilemma. The application of TL lowers the data requirements for model training, which makes TL stand out in researches addressing data quality issues. In this review, we summarize recent progress in TL related to molecular and materials. We focus on the application of TL methods for the discovery of advanced molecules/materials, particularly, the construction of TL frameworks for different systems, and how TL can enhance the performance of models. In addition, the challenges of TL are also discussed. 展开更多
关键词 Machine learning Transfer learning Small data MOLECULE Material science
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Evolutionary Variational YOLOv8 Network for Fault Detection in Wind Turbines
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作者 Hongjiang Wang Qingze Shen +3 位作者 Qin Dai Yingcai gao jing gao Tian Zhang 《Computers, Materials & Continua》 SCIE EI 2024年第7期625-642,共18页
Deep learning has emerged in many practical applications,such as image classification,fault diagnosis,and object detection.More recently,convolutional neural networks(CNNs),representative models of deep learning,have ... Deep learning has emerged in many practical applications,such as image classification,fault diagnosis,and object detection.More recently,convolutional neural networks(CNNs),representative models of deep learning,have been used to solve fault detection.However,the current design of CNNs for fault detection of wind turbine blades is highly dependent on domain knowledge and requires a large amount of trial and error.For this reason,an evolutionary YOLOv8 network has been developed to automatically find the network architecture for wind turbine blade-based fault detection.YOLOv8 is a CNN-backed object detection model.Specifically,to reduce the parameter count,we first design an improved FasterNet module based on the Partial Convolution(PConv)operator.Then,to enhance convergence performance,we improve the loss function based on the efficient complete intersection over the union.Based on this,a flexible variable-length encoding is proposed,and the corresponding reproduction operators are designed.Related experimental results confirmthat the proposed approach can achieve better fault detection results and improve by 2.6%in mean precision at 50(mAP50)compared to the existing methods.Additionally,compared to training with the YOLOv8n model,the YOLOBFE model reduces the training parameters by 933,937 and decreases the GFLOPS(Giga Floating Point Operations Per Second)by 1.1. 展开更多
关键词 Neural architecture search YOLOv8 evolutionary computation fault detection
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Research on the IL-Bagging-DHKELM Short-Term Wind Power Prediction Algorithm Based on Error AP Clustering Analysis
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作者 jing gao Mingxuan Ji +1 位作者 Hongjiang Wang Zhongxiao Du 《Computers, Materials & Continua》 SCIE EI 2024年第6期5017-5030,共14页
With the continuous advancement of China’s“peak carbon dioxide emissions and Carbon Neutrality”process,the proportion of wind power is increasing.In the current research,aiming at the problem that the forecasting m... With the continuous advancement of China’s“peak carbon dioxide emissions and Carbon Neutrality”process,the proportion of wind power is increasing.In the current research,aiming at the problem that the forecasting model is outdated due to the continuous updating of wind power data,a short-term wind power forecasting algorithm based on Incremental Learning-Bagging Deep Hybrid Kernel Extreme Learning Machine(IL-Bagging-DHKELM)error affinity propagation cluster analysis is proposed.The algorithm effectively combines deep hybrid kernel extreme learning machine(DHKELM)with incremental learning(IL).Firstly,an initial wind power prediction model is trained using the Bagging-DHKELM model.Secondly,Euclidean morphological distance affinity propagation AP clustering algorithm is used to cluster and analyze the prediction error of wind power obtained from the initial training model.Finally,the correlation between wind power prediction errors and Numerical Weather Prediction(NWP)data is introduced as incremental updates to the initial wind power prediction model.During the incremental learning process,multiple error performance indicators are used to measure the overall model performance,thereby enabling incremental updates of wind power models.Practical examples show the method proposed in this article reduces the root mean square error of the initial model by 1.9 percentage points,indicating that this method can be better adapted to the current scenario of the continuous increase in wind power penetration rate.The accuracy and precision of wind power generation prediction are effectively improved through the method. 展开更多
关键词 Short-term wind power prediction deep hybrid kernel extreme learning machine incremental learning error clustering
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Manipulating the Spatial Structure of Second-Order Quantum Coherence Using Entangled Photons
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作者 黄双印 高菁 +10 位作者 任志成 程子默 朱文正 薛舒天 娄严超 刘志峰 陈超 朱飞 杨立平 汪喜林 王慧田 《Chinese Physics Letters》 SCIE EI CAS CSCD 2024年第7期58-73,共16页
High-order quantum coherence reveals the statistical correlation of quantum particles. Manipulation of quantum coherence of light in the temporal domain enables the production of the single-photon source, which has be... High-order quantum coherence reveals the statistical correlation of quantum particles. Manipulation of quantum coherence of light in the temporal domain enables the production of the single-photon source, which has become one of the most important quantum resources. High-order quantum coherence in the spatial domain plays a crucial role in a variety of applications, such as quantum imaging, holography, and microscopy. However, the active control of second-order spatial quantum coherence remains a challenging task. Here we predict theoretically and demonstrate experimentally the first active manipulation of second-order spatial quantum coherence,which exhibits the capability of switching between bunching and anti-bunching, by mapping the entanglement of spatially structured photons. We also show that signal processing based on quantum coherence exhibits robust resistance to intensity disturbance. Our findings not only enhance existing applications but also pave the way for broader utilization of higher-order spatial quantum coherence. 展开更多
关键词 PARTICLES QUANTUM spatially
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Bibliometrics of trends in global research on the roles of stem cells in myocardial fibrosis therapy
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作者 jing-Yi Ding Tian-Tian Meng +5 位作者 Ruo-Lin Du Xin-Bin Song Yi-Xiang Li jing gao Ran Ji Qing-Yong He 《World Journal of Stem Cells》 SCIE 2024年第12期1086-1105,共20页
BACKGROUND Myocardial fibrosis,a condition linked to several cardiovascular diseases,is associated with a poor prognosis.Stem cell therapy has emerged as a potential treatment option and the application of stem cell t... BACKGROUND Myocardial fibrosis,a condition linked to several cardiovascular diseases,is associated with a poor prognosis.Stem cell therapy has emerged as a potential treatment option and the application of stem cell therapy has been studied extensively.However,a comprehensive bibliometric analysis of these studies has yet to be conducted.AIM To map thematic trends,analyze research hotspots,and project future directions of stem cell-based myocardial fibrosis therapy.METHODS We conducted a bibliometric and visual analysis of studies in the Web of Science Core Collection using VOSviewer and Microsoft Excel.The dataset included 1510 articles published between 2001 and 2024.Countries,organizations,authors,references,keywords,and co-citation networks were examined to identify evolving research trends.RESULTS Our findings revealed a steady increase in the number of publications,with a projected increase to over 200 publications annually by 2030.Initial research focused on stem cell-based therapy,particularly for myocardial infarction and heart failure.More recently,there has been a shift toward cell-free therapy,involving extracellular vesicles,exosomes,and microRNAs.Key research topics include angiogenesis,inflammation,apoptosis,autophagy,and oxidative stress.CONCLUSION This analysis highlights the evolution of stem cell therapies for myocardial fibrosis,with emerging interest in cellfree approaches.These results are expected to guide future scientific exploration and decision-making. 展开更多
关键词 Stem cells Myocardial fibrosis Cardiovascular diseases VOSviewer BIBLIOMETRICS
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Novel insights into immune-related genes associated with type 2 diabetes mellitus-related cognitive impairment
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作者 jing gao Ying Zou +2 位作者 Xiao-Yu Lv Li Chen Xin-Guo Hou 《World Journal of Diabetes》 SCIE 2024年第4期735-757,共23页
BACKGROUND The cognitive impairment in type 2 diabetes mellitus(T2DM)is a multifaceted and advancing state that requires further exploration to fully comprehend.Neu-roinflammation is considered to be one of the main m... BACKGROUND The cognitive impairment in type 2 diabetes mellitus(T2DM)is a multifaceted and advancing state that requires further exploration to fully comprehend.Neu-roinflammation is considered to be one of the main mechanisms and the immune system has played a vital role in the progression of the disease.AIM To identify and validate the immune-related genes in the hippocampus associated with T2DM-related cognitive impairment.METHODS To identify differentially expressed genes(DEGs)between T2DM and controls,we used data from the Gene Expression Omnibus database GSE125387.To identify T2DM module genes,we used Weighted Gene Co-Expression Network Analysis.All the genes were subject to Gene Set Enrichment Analysis.Protein-protein interaction network construction and machine learning were utilized to identify three hub genes.Immune cell infiltration analysis was performed.The three hub genes were validated in GSE152539 via receiver operating characteristic curve analysis.Validation experiments including reverse transcription quantitative real-time PCR,Western blotting and immunohistochemistry were conducted both in vivo and in vitro.To identify potential drugs associated with hub genes,we used the Comparative Toxicogenomics Database(CTD).RESULTS A total of 576 DEGs were identified using GSE125387.By taking the intersection of DEGs,T2DM module genes,and immune-related genes,a total of 59 genes associated with the immune system were identified.Afterward,machine learning was utilized to identify three hub genes(H2-T24,Rac3,and Tfrc).The hub genes were associated with a variety of immune cells.The three hub genes were validated in GSE152539.Validation experiments were conducted at the mRNA and protein levels both in vivo and in vitro,consistent with the bioinformatics analysis.Additionally,11 potential drugs associated with RAC3 and TFRC were identified based on the CTD.CONCLUSION Immune-related genes that differ in expression in the hippocampus are closely linked to microglia.We validated the expression of three hub genes both in vivo and in vitro,consistent with our bioinformatics results.We discovered 11 compounds associated with RAC3 and TFRC.These findings suggest that they are co-regulatory molecules of immunometabolism in diabetic cognitive impairment. 展开更多
关键词 Bioinformatics analysis Type 2 diabetes mellitus Cognitive impairment HIPPOCAMPUS IMMUNE MICROGLIA
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Coordinated Voltage Control of Distribution Network ConsideringMultiple Types of Electric Vehicles
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作者 Liang Liu Guangda Xu +3 位作者 Yuan Zhao Yi Lu Yu Li jing gao 《Energy Engineering》 EI 2024年第2期377-404,共28页
The couple between the power network and the transportation network(TN)is deepening gradually with the increasing penetration rate of electric vehicles(EV),which also poses a great challenge to the traditional voltage... The couple between the power network and the transportation network(TN)is deepening gradually with the increasing penetration rate of electric vehicles(EV),which also poses a great challenge to the traditional voltage control scheme.In this paper,we propose a coordinated voltage control strategy for the active distribution networks considering multiple types of EV.In the first stage,the action of on-load tap changer and capacitor banks,etc.,are determined by optimal power flow calculation,and the node electricity price is also determined based on dynamic time-of-use tariff mechanism.In the second stage,multiple operating scenarios of multiple types of EVs such as cabs,private cars and buses are considered,and the scheduling results of each EV are solved by building an optimization model based on constraints such as queuing theory,Floyd-Warshall algorithm and traffic flow information.In the third stage,the output power of photovoltaic and energy storage systems is fine-tuned in the normal control mode.The charging power of EVs is also regulated in the emergency control mode to reduce the voltage deviation,and the amount of regulation is calculated based on the fair voltage control mode of EVs.Finally,we test the modified IEEE 33-bus distribution system coupled with the 24-bus Beijing TN.The simulation results show that the proposed scheme can mitigate voltage violations well. 展开更多
关键词 Electric vehicle transportation network voltage control queuing theory
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Dermal thickness,rather than drug concentration and injection speed,influences the effective area of botulinum toxin type A in the dermis
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作者 Yixin Sun Wangfei Mo +5 位作者 Yunzhu Li Ruijia Dong Cheng Chen jing gao Nanze Yu Xiao Long 《Chinese Journal of Plastic and Reconstructive Surgery》 2024年第3期130-134,共5页
Background:Recently,microbotulinum,a new technique that involves injecting botulinum toxin type A(BoNTA)microdroplets into superficial cutaneous tissue,has gained popularity.The precise distribution of BoNTA in the ta... Background:Recently,microbotulinum,a new technique that involves injecting botulinum toxin type A(BoNTA)microdroplets into superficial cutaneous tissue,has gained popularity.The precise distribution of BoNTA in the targeted area profoundly affects outcomes.Many factors may influence the effective area of BoNTA in the dermis.This study aimed to determine the dermal distribution properties of BoNTA to guide microbotulinum injection.Methods:Ten healthy males aged 18–65 years without BoNTA treatment in the previous year were recruited to receive intradermal injections in the chest and back.Ultrasound was used to ensure the intradermal delivery of injections and measure the dermal thickness.The minor iodine starch test was performed at baseline and 3 days,7 days,21 days,1 month,and 2 months after treatment.Results:All participants received intradermal injections.The dermis was thinner on the chest(thickness,0.20±0.03 cm)than on the back(thickness,0.39±0.07 cm)(P<0.05).An injection in the thicker dermis had a significantly smaller effective area at every follow-up visit.The drug concentration did not affect the effective area except at 3 days after treatment.Injection speed did not influence the effective area at any follow-up visits.Conclusion:An injection in a thicker dermis leads to a smaller effective area for intradermal injections.When the BoNTA dose is the same,the drug concentration and injection speed do not matter. 展开更多
关键词 Botulinum toxin type A Effective area Microbotulinum
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Practice of Perioperative Rational Use of Antibacterial Drugs Based on Drug Pathway
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作者 Changkai ZHOU Fanbo jing +1 位作者 Haijun QU jing gao 《Medicinal Plant》 2024年第2期57-60,64,共5页
[Objectives]To establish a new management model for rational use of perioperative antibacterial drugs in surgical departments.[Methods]Based on evidence-based medicine,the department s drug pathway was formulated,and ... [Objectives]To establish a new management model for rational use of perioperative antibacterial drugs in surgical departments.[Methods]Based on evidence-based medicine,the department s drug pathway was formulated,and the new mode of rational drug use control was established by using fine pharmaceutical technology intervention,and the intervention effect was evaluated by the intensity of antibacterial drug use,per capita drug costs and the proportion of drugs.[Results]After adopting drug pathway in departments,the intensity of antibacterial drug use,per capita drug costs and the proportion of drugs decreased significantly,and the effect of rational drug use control was remarkable.[Conclusions]The drug pathway provides a new management and control mode for the rational use of perioperative antibacterial drugs in surgical departments of hospitals.Thus,it is worthy of popularization and application. 展开更多
关键词 Perioperative period Antibacterial drugs Drug pathway Rational drug use Management model
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Advances in Research of Anti-tumor Effect of Aconiti Radix
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作者 jing gao Fanbo jing +2 位作者 Lifang FENG Wen XU Changkai ZHOU 《Medicinal Plant》 2024年第2期80-83,共4页
In this paper,the anti-tumor effects of Aconiti Radix were reviewed and summarized,and the clinical feasibility of Aconiti Radix as a potential anti-tumor drug was analyzed,in order to provide a useful reference for t... In this paper,the anti-tumor effects of Aconiti Radix were reviewed and summarized,and the clinical feasibility of Aconiti Radix as a potential anti-tumor drug was analyzed,in order to provide a useful reference for the future research and development of new anti-cancer drugs of Aconiti Radix. 展开更多
关键词 Aconiti Radix ANTI-TUMOR Research advances Feasibility analysis
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屈光参差性弱视与斜视性弱视的电生理研究 被引量:10
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作者 吴晓璇 周珺 +3 位作者 王肖 高敬 刘瑞芬 赵琪 《中国现代医学杂志》 CAS 北大核心 2017年第28期96-101,共6页
目的分析屈光参差性弱视和斜视性弱视的视觉诱发电位(VEP)与对比敏感度(CS)的特征性变化,并探讨2种弱视不同的致病机制。方法采用德国罗兰公司RETI scan 3.15系统对20例屈光参差性弱视、9例斜视性弱视和18例非弱视性儿童的双眼行VEP和C... 目的分析屈光参差性弱视和斜视性弱视的视觉诱发电位(VEP)与对比敏感度(CS)的特征性变化,并探讨2种弱视不同的致病机制。方法采用德国罗兰公司RETI scan 3.15系统对20例屈光参差性弱视、9例斜视性弱视和18例非弱视性儿童的双眼行VEP和CS检查,进行弱视眼、对侧眼及非弱视眼之间的对比研究。结果与对侧眼或非弱视眼相比,屈光参差性弱视眼在高空间频率条件下潜时延长,而斜视性弱视眼在全空间频率条件下潜时延长。2种弱视眼的振幅在低频时均下降。屈光参差性弱视对侧眼与非弱视眼比较差异无统计学意义(P>0.05),而斜视性弱视对侧眼的潜时在低频下较非弱视眼延长,差异有统计学意义(P<0.05)。屈光参差性弱视眼和对侧眼的CS与非弱视眼比较差异无统计学意义(P>0.05)。斜视性弱视眼表现为全空间频率上的CS下降,差异有统计学意义(P<0.05),其对侧眼的CS则优于非弱视眼。结论本研究结果支持斜视性弱视与屈光参差性弱视拥有不同神经机制的观点。斜视性弱视的对侧眼并非"健眼"。VEP与CS检查对弱视诊断具有临床意义。 展开更多
关键词 屈光参差性弱视 斜视性弱视 视觉诱发电位 对比敏感度
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二代测序在家族遗传性高危胃肠肿瘤筛查中的应用 被引量:5
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作者 张静 王晰程 +7 位作者 曹彦硕 李健 张小田 龚继芳 陆明 高静 李艳艳 沈琳 《中国肿瘤临床》 CAS CSCD 北大核心 2018年第19期1000-1004,共5页
目的:探索二代测序技术对家族遗传性高危胃肠肿瘤患者进行遗传筛查的意义及高危因素在筛选患者中的价值。方法:选取2016年3月至2016年4月收治于北京大学肿瘤医院的322例结直肠癌及胃癌患者,筛选出25例遗传性胃肠肿瘤高危患者,运用二代... 目的:探索二代测序技术对家族遗传性高危胃肠肿瘤患者进行遗传筛查的意义及高危因素在筛选患者中的价值。方法:选取2016年3月至2016年4月收治于北京大学肿瘤医院的322例结直肠癌及胃癌患者,筛选出25例遗传性胃肠肿瘤高危患者,运用二代测序技术对患者的外周血白细胞DNA进行42个遗传性肿瘤综合征相关基因的胚系检测。结果:24%(6/25)患者检测出遗传性肿瘤相关基因的病理性胚系突变,其中50%(3/6)患者肿瘤组织的免疫组织化学检测表现为错配修复蛋白表达缺失,83%(5/6)患者发病年龄≤50岁且具有恶性肿瘤家族史。发生胚系突变的6例遗传性肿瘤相关基因分别为MYH基因错义突变1例,APC基因缺失突变1例和遗传性非息肉病性结直肠癌(hereditary nonpolyposis colorectal cancer,HNPCC)相关基因的突变4例(包括MLH1、MLH3、TGFBR2的错义突变和MSH6的无义突变各1例),且提供了MLH3的胚系致病突变的家系验证。结论:通过二代测序技术对本研究入组的25例患者进行家族遗传性肿瘤综合征的筛查,检测出遗传性肿瘤相关基因的胚系致病突变6例,提示运用二代测序技术对家族遗传性高危消化道肿瘤患者进行遗传筛查具有提高检测阳性率的临床应用价值。 展开更多
关键词 家族遗传性消化道肿瘤 二代测序 胚系突变
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中高度近视患者LASIK术后屈光回退的临床分析 被引量:13
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作者 高晶 孙熠 +1 位作者 温誗 裴澄 《国际眼科杂志》 CAS 北大核心 2019年第4期614-618,共5页
目的:分析中高度近视患者准分子激光原位角膜磨镶术(LASIK)术后屈光回退的临床特征。方法:回顾性研究。选取2016-01/2018-01在我院行LASIK术后发生屈光回退患者30例60眼,按照术前屈光度分为中度近视组(<-6.00D),高度近视组(-6.00~-1... 目的:分析中高度近视患者准分子激光原位角膜磨镶术(LASIK)术后屈光回退的临床特征。方法:回顾性研究。选取2016-01/2018-01在我院行LASIK术后发生屈光回退患者30例60眼,按照术前屈光度分为中度近视组(<-6.00D),高度近视组(-6.00~-10.00D)和超高度近视组(>-10.00D),分析手术前后患者视力、屈光度、角膜曲率、CCT、眼压、眼轴、术后残余角膜基质厚度情况。结果:本组屈光回退率为8.6%(60/700眼)。中度、高度、超高度近视组患者术后6mo屈光回退量分别为:1.31±0.15、1.76±0.23、2.53±0.35D(P<0.05)。三组患者屈光度:术后6mo(-0.82±0.21、-1.03±0.27、-1.57±0.52D)与术前(-4.87±0.97、-7.46±1.03、-10.32±2.01D),术后1mo(+0.49±0.22、+0.73±0.17、+0.95±0.15D)均有差异(P<0.05)。三组CCT:术后6mo(499.80±33.78、458.89±36.93、451.93±24.52μm)较术前(523.80±23.00、527.24±25.47、525.80±22.36μm)减少(P<0.05),较术后1mo(487.92±38.13、440.65±33.92、429.35±20.14μm)增加。三组患者术后6mo眼轴(25.25±0.30、26.52±0.62、28.63±0.21mm)与术前(25.13±0.54、26.13±0.54、28.03±1.04mm)比较无差异(P>0.05),但三组间两两比较有差异(P<0.05)。中度近视组、高度近视组、超高度近视组剩余角膜基质厚度分别为332.27±21.87、292.71±22.71、273.38±20.99μm(P<0.05)。三组患者术后6mo角膜曲率、眼压无差异(P>0.05)。结论:LASIK术后屈光回退的发生与术前屈光度有关。高度近视和超高度近视可能因眼轴进行性增长发生屈光回退,中度近视可能因术后基质修复引起角膜厚度增加和角膜曲率变化发生屈光回退。 展开更多
关键词 准分子激光原位角膜镶术 屈光回退 临床分析
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Three-Dimensional Multi-Phase Microscopic Simulation of Service Life of Recycled Large Aggregate Self-Compacting Concrete
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作者 jing Li Lina gao +3 位作者 Libo Liu Liao Zhang Jianhua Zheng jing gao 《Journal of Materials Science and Chemical Engineering》 2024年第4期126-135,共10页
Recycled large aggregate self-compacting concrete (RLA-SCC) within multiple weak areas. These weak areas have poor resistance to chloride ion erosion, which affects the service life of RLA-SCC in the marine environmen... Recycled large aggregate self-compacting concrete (RLA-SCC) within multiple weak areas. These weak areas have poor resistance to chloride ion erosion, which affects the service life of RLA-SCC in the marine environment. A three-dimensional multi-phase mesoscopic numerical model of RLA-SCC was established to simulate the chloride ions transportation in concrete. Experiments of RLA-SCC immersing in chloride solution were carried out to verify the simulation results. The effects of recycled large aggregate (RLA) content and RLA particle size on the service life of concrete were explored. The results indicate that the mesoscopic numerical simulation results are in good agreement with the experimental results. At the same depth, the closer to the surface of the RLA, the greater the chloride ion concentration. The service life of RLA-SCC in marine environment decreases with the increase of RLA content. Compared with the service life of 20% content, the service life of 25% and 30% content decreased by 20% and 42% respectively. Increasing the particle size of RLA can effectively improve the service life of RLA-SCC in chloride environment. Compared with the service life of 50 mm particle size, the service life of 70 mm and 90 mm increased by 61% and 163%, respectively. . 展开更多
关键词 Recycled Large Aggregate Self-Compacting Concrete Mesoscopic Mode Chloride Ion Diffusion Numerical Analysis
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三药联合方案治疗晚期转移性结直肠癌的疗效和安全性比较 被引量:19
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作者 张音洁 王晰程 +10 位作者 李健 张小田 陆明 龚继芳 高静 鲁智豪 周军 彭智 齐长松 李艳艳 沈琳 《中国肿瘤临床》 CAS CSCD 北大核心 2019年第4期178-183,共6页
目的:探讨5-氟尿嘧啶(5-FU)/亚叶酸(leucovorin,LV)联合伊立替康和奥沙利铂(FOLFOXIRI)方案与卡培他滨联合伊立替康和奥沙利铂(CAPRINOX)方案一线应用于晚期不可切除结直肠癌的安全性及初步疗效的差异。方法:回顾性分析北京大学肿瘤医院... 目的:探讨5-氟尿嘧啶(5-FU)/亚叶酸(leucovorin,LV)联合伊立替康和奥沙利铂(FOLFOXIRI)方案与卡培他滨联合伊立替康和奥沙利铂(CAPRINOX)方案一线应用于晚期不可切除结直肠癌的安全性及初步疗效的差异。方法:回顾性分析北京大学肿瘤医院2013年1月至2018年11月诊治的晚期转移性结直肠癌(metastatic colorectal cancer,mCRC)患者73例,所有患者均为一线化疗,按照治疗方案分为两组,其中45例为FOLFOXIRI方案组,28例为CAPRINOX方案组,根据化疗的客观缓解率(objective response rate,ORR)、转化根治性切除率及不良反应对比两种化疗方案的临床疗效和安全性。结果:FOLFOXIRI方法的ORR、中位无疾病进展时间(median progression free survival,mPFS)、R0切除的比例与CAPRINOX方法比较差异无统计学意义(60% vs.57.1%,7.7个月 vs.9.6个月,24.4% vs.17.9%;P>0.05)。所有患者在治疗期间,未出现治疗相关性死亡,两组主要不良反应包括白细胞减少、中性粒细胞减少、疲乏、恶心、呕吐、腹泻、脱发、转氨酶升高和周围神经毒性,FOLFOXIRI组3/4级不良反应发生率为33.3%(15/45),CAPRINOX组3/4级不良反应发生率为46.4%(13/28),差异无统计学意义(P=0.263)。结论:FOLFOXIRI和CAPRINOX均是一线治疗mCRC的有效方案,三药联合方案近期疗效高,不良反应可以耐受。 展开更多
关键词 结直肠癌 5-氟尿嘧啶 伊立替康 奥沙利铂 卡培他滨
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老年2型糖尿病患者衰弱现状及影响因素分析 被引量:33
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作者 郭潇潇 高静 +5 位作者 向玉萍 侯晓琳 吴晨曦 江小林 郑雨萍 肖青青 《中国现代医学杂志》 CAS 2018年第34期90-96,共7页
目的了解老年2型糖尿病患者的衰弱现状,并探讨老年2型糖尿病患者发生衰弱的影响因素。方法对成都中医药大学附属医院内分泌科住院治疗的306例老年2型糖尿病患者进行横断面调查,采用一般资料调查表、临床资料调查表分别收集患者的社会人... 目的了解老年2型糖尿病患者的衰弱现状,并探讨老年2型糖尿病患者发生衰弱的影响因素。方法对成都中医药大学附属医院内分泌科住院治疗的306例老年2型糖尿病患者进行横断面调查,采用一般资料调查表、临床资料调查表分别收集患者的社会人口学资料、生活方式及疾病相关资料,采用Fried衰弱量表评估患者衰弱状况,采用营养状况调查表、Charlson合并症指数(CCI)分别评估患者营养状况、多病共存的情况。结果老年2型糖尿病患者衰弱发生率为54.58%(167/306),衰弱前期为21.24%(65/306),非衰弱24.18%(74/306)。其中握力低、躯体活动量低、步行速度慢是发生最多的3个衰弱指标。单因素分析结果显示:不同2型老年糖尿病患者的衰弱状况在年龄、糖尿病并发症数量、口服双胍类降糖药患者的比例、糖化血红蛋白水平、C反应蛋白水平、营养评分(微型营养评估简表)、BMI、血红蛋白水平、清蛋白水平、CCI评分方面差异有统计学意义(P <0.05)。多分类有序Logistic回归结果显示:年龄、营养状况、糖化血糖水平、CCI评分为老年2型糖尿病患者衰弱的影响因素。结论老年2型糖尿病患者的衰弱发生率高,衰弱的发生受多种因素影响,提示临床医护人员应密切关注老年2型糖尿病患者衰弱问题,针对性的采取干预措施,以减少衰弱发生。 展开更多
关键词 糖尿病 2型 老年患者 衰弱现状 影响因素
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补虚劳经典药膳粥改善脾肾阳虚证慢性疲劳综合征患者临床症状研究 被引量:13
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作者 钟懿珠 高静 +4 位作者 叶艳 吴晨曦 柏丁兮 吕俭霞 贺恋词 《中国现代医学杂志》 CAS 2018年第36期37-43,共7页
目的探讨补虚劳经典药膳粥对脾肾阳虚证慢性疲劳综合征(CFS)患者临床症状的改善效果。方法在成都市某三甲中医院门诊选取符合纳入标准的CFS(脾肾阳虚证)患者86例,采用随机数字表法分成试验组和对照组,各43例。对照组采用发放健康教育手... 目的探讨补虚劳经典药膳粥对脾肾阳虚证慢性疲劳综合征(CFS)患者临床症状的改善效果。方法在成都市某三甲中医院门诊选取符合纳入标准的CFS(脾肾阳虚证)患者86例,采用随机数字表法分成试验组和对照组,各43例。对照组采用发放健康教育手册、面对面交谈的个体指导与讲座、微信群的集体指导相结合的形式实施为期8周的健康教育,每2周1次,共4次;试验组在此基础上食用改良后的补虚劳经典药膳粥,隔天1次,每次400~500 ml,4周为1个疗程,共2个疗程。两组患者均于干预前、干预4周末、干预8周末采用疲劳量表-14(FS-14)、躯体和心理健康报告(SPHERE)分别评价患者疲劳症状和伴随症状,采用脾肾阳虚中医证候积分评价患者中医证候的改善情况。结果试验组干预后各时间点FS-14总分和SPHERE评分均低于同期对照组(P<0.05);FS-14总分和SPHERE评分组间效应、时间效应及两者交互效应差异均有统计学意义(P<0.05)。试验组干预后各时间点中FS-14总分和SPHERE评分两两比较,后一时间点得分均低于前一时间点(P<0.05)。中医证候:干预4周后,试验组脾肾阳虚证候总分、倦怠乏力、食少纳呆、脘腹胀满条目低于对照组(P <0.05),干预8周后,除腰部冷痛条目外,其余条目及总分试验组均低于对照组(P <0.05);中医证候总分组间效应、时间效应及两者交互效应差异有统计学意义(P <0.05)。试验组干预后各时间点中医证候总分两两比较,后一时间点得分均低于前一时间点,差异有统计学意义(P <0.05)。结论补虚劳经典药膳粥可改善CFS患者的疲劳,减少伴随症状,并能有效改善患者的中医证候。 展开更多
关键词 疲劳综合征 慢性 补虚劳经典药膳粥 脾肾阳虚证 临床症状
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