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A Time Series Observation of Chinese Children Undergoing Rigid Bronchoscopy for an Inhaled Foreign Body： 3149 Cases in 1991-2010

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Chinese Medical Journal 2015年第4期128卷 504-509页

作者： Xu Zhang Wen-Xian Li yi-Rong cai Department of Anesthesiology Eye and ENT Hospital Fudan University Shanghai 200031 China

Background：In China,tracheobronchial foreign body （TFB） aspiration,a major cause of emergency episode and accident death in children,remains a challenge for anesthetic ***,we share our experience and discuss the anesthetic consideration and management of patients with TFB ***：This was a single-institution retrospective study in children with an inhaled foreign body between 1991 and 2010 that focused on the complications following rigid bronchoscopy （RB）.Data including the clinical characteristics of patients and TFB,anesthetic method,and postoperative severe complications were analyzed by different ***：During the 20-year study period,the charts of 3149 patients who underwent RB for suspected inhaled TFB were *** were 2079 male and 1070 female patients （1.94：1）.A nut （84％） was the most commonly inhaled *** study revealed a 9％（n =284） overall rate of severe postoperative complications related to severe hypoxemia,laryngeal edema,complete laryngospasm,pneumothorax,total segmental atelectasis,and death with incidences of 3.2％,0.9％,1.3％,0.3％,0.3％,and 0.1％,*** rates of preoperative airway impairment,negative findings of TFB,and adverse postoperative events have been on the rise in the past 5 ***：The survey results confirmed that hypoxemia remains the most common postoperative complication in different *** controlled ventilation and spontaneous ventilation were effective during the RB extraction of the foreign body at our hospital in the modern technique *** active respiratory symptom was commonly seen in the groups with negative findings.

关键词： Complication Inhaled Foreign Body Rigid Bronchoscope

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天目地黄4个变异株形态观测及倍性鉴定

安徽农业科学 2024年第16期52卷 107-110页

作者：宋利娜张华丽衣彩洁赵世伟冯慧弓传伟孙丽萍绿化植物育种北京市重点实验室/北京市园林绿化科学研究院北京100102

在连续开展3年多的地黄属植物收集选育工作过程中,发现了4株表观形态有所变化的不同变异株,编号分别为T-1、T-2、T-3、T-4,对其形态指标进行测量统计及数据分析后发现,与天目地黄相比形态差异明显。具体差异表现为:T-1主茎明显短缩;T-2... 详细信息

在连续开展3年多的地黄属植物收集选育工作过程中,发现了4株表观形态有所变化的不同变异株,编号分别为T-1、T-2、T-3、T-4,对其形态指标进行测量统计及数据分析后发现,与天目地黄相比形态差异明显。具体差异表现为:T-1主茎明显短缩;T-2柱头外露于花瓣,叶片长宽比变小;T-3柱头外漏于花瓣,主茎明显短缩;T-4单叶叶面积增大近3倍,主茎明显短缩近无。为明确变异株染色体倍性,用流式细胞仪进行倍性检测分析,结果显示T-1、T-2、T-3峰值均与原株一致,鉴定为2倍体,T-4峰值约为原株的2倍,鉴定为4倍体。

关键词：天目地黄地黄属变异单株柱头外露倍性检测

维普期刊数据库博看期刊

Characteristics of the HIV/AIDS Epidemic among People Aged≥50 Years in China during 2018–2021

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Biomedical and Environmental Sciences 2024年第4期37卷 399-405页

作者： HOU Yu Shan JIN yi Chen cai Chang TANG Hou Lin QIN Qian Qian LYU Fan National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and PreventionBeijing 102206China

Objective This study aimed to determine the current epidemiological status of PLWHA aged≥50 years in China from 2018 to *** also aimed to recommend targeted interventions for the prevention and treatment of HIV/AIDS in elderly *** Data on newly reported cases of PLWHA,aged≥50 years in China from 2018 to 2021,were collected using the *** tests and spatial analyses were also *** Between 2018 and 2021,237,724 HIV/AIDS cases were reported among patients aged≥50 years in *** main transmission route was heterosexual transmission(91.24%).Commercial heterosexual transmission(CHC)was the primary mode of transmission among males,while non-marital non-CHC([NMNCHC];60.59%)was the prevalent route in *** proportion of patients with CHC decreased over time(Z=67.716,P<0.01),while that of patients with NMNCHC increased(Z=153.05,P<0.01).The sex ratio varied among the different modes of infection,and it peaked at 17.65 for *** spatial analysis indicated spatial clustering,and the high-high clustering areas were mainly distributed in the southwestern and central-southern *** In China,PLWHA,aged≥50 years,were predominantly infected through heterosexual *** primary modes of infection were CHC and *** were variations in the sex ratio among different age groups,infected through various sexual ***/AIDS cases exhibited spatial *** on these results,the expansion of HIV testing,treatment,and integrated behavioral interventions in high-risk populations is recommended to enhance disease detection in key regions.

关键词： HIV/AIDS Aged≥50 years China

High Speed Sintering:Assessing the Influence of Energy Input on Microstructure and Mechanical Properties of Polyether Block Amide(PEBA)Parts

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Chinese Journal of Polymer Science 2024年第5期42卷 675-682,I0004,I0010页

作者： Jiang-Tao Sun Zhi-Yong Fan yi-Wei Mao Wei Li Wei Zhu Dao-Sheng cai Qing-Song Wei State Key Laboratory of Materials Processing and Die&Mould Technology Huazhong University of Science and TechnologyWuhan430074China State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan430074China National Engineering Research Centre for High Efficiency Grinding Hunan UniversityChangsha410082China Wuhan EasyMFG Technology CO. LTDWuhan430074China

High speed sintering,a new powder-bed fusion additive manufacturing technology,utilizes infrared lights(IR)to intensely heat and melt polymer *** presence of defects such as porosity,which is associated with particle coalescence,is highly dependdent on the level of energy *** study investigate the influcence of energy input on porosity and its subsequent effects on the mechanical properties and microstructures of PEBA *** parts were manufactured with a variety of lamp powers,resulting in a range of energy input levels spanning from low to ***,they underwent testing using Archimedes’method,followed by tensile *** porosity,mechanical characteristics,and energy input exhibit a strong correlation;inadequate energy input was the primary cause of pore *** the reduced IR light power resulted in the following outcomes:porosity,ultimate tensile strength,and elongation of 1.37%,7.6 MPa,and 194.2%,*** the energy input was further increased,the porosity was reduced to as low as 0.05%and the ultimate tensile strength and elongation were increased to their peak values of 233.8%and 9.1 MPa,respectively.

关键词： High speed sintering Additive manufacturing Energy input Powder bed fusion PEBA

A dual adaptive unscented Kalman filter algorithm for SINS-based integrated navigation system

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Journal of Systems Engineering and Electronics 2024年第3期35卷 732-740页

作者： LYU Xu MENG Ziyang LI Chunyu cai Zhenyu HUANG yi LI Xiaoyong YU Xingkai Department of Precision Instrument Tsinghua UniversityBeijing 100084China College of Mechanical and Power Engineering Three Gorges UniversityYichang 443002China Unit 91001 of the PLA Beijing 100161China School of Control and Computer Engineering North China Electric Power UniversityBeijing 100096China

In this study, the problem of measuring noise pollution distribution by the intertial-based integrated navigation system is effectively suppressed. Based on nonlinear inertial navigation error modeling, a nested dual Kalman filter framework structure is developed. It consists of unscented Kalman filter (UKF)master filter and Kalman filter slave filter. This method uses nonlinear UKF for integrated navigation state estimation. At the same time, the exact noise measurement covariance is estimated by the Kalman filter dependency filter. The algorithm based on dual adaptive UKF (Dual-AUKF) has high accuracy and robustness, especially in the case of measurement information interference. Finally, vehicle-mounted and ship-mounted integrated navigation tests are conducted. Compared with traditional UKF and the Sage-Husa adaptive UKF (SH-AUKF), this method has comparable filtering accuracy and better filtering stability. The effectiveness of the proposed algorithm is verified.

关键词： Kalman filter dual-adaptive integrated navigation unscented Kalman filter(UKF) robust

Update on thyroid ultrasound: a narrative review from diagnostic criteria to artificial intelligence techniques

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Chinese Medical Journal 2019年第16期132卷 1974-1982页

作者： Xiao-Wen Liang Yong-yi cai Jin-Sui Yu Jian-yi Liao Zhi-yi Chen Department of Ultrasound Medicine Laboratory of Ultrasound Medicine and Artificial IntelligenceExperimental Center of Liwan HospitalThe Third Affiliated Hospital of Guangzhou Medical UniversityThe Liwan Hospital of the Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdong 510000China.

Objective Ultrasound imaging is well known to play an important role in the detection of thyroid disease, but the management of thyroid ultrasound remains inconsistent. Both standardized diagnostic criteria and new ultrasound technologies are essential for improving the accuracy of thyroid ultrasound. This study reviewed the global guidelines of thyroid ultrasound and analyzed their common characteristics for basic clinical screening. Advances in the application of a combination of thyroid ultrasound and artificial intelligence (AI) were also presented. Data sources An extensive search of the PubMed database was undertaken, focusing on research published after 2001 with keywords including thyroid ultrasound, guideline, AI, segmentation, image classification, and deep learning. Study selection Several types of articles, including original studies and literature reviews, were identified and reviewed to summarize the importance of standardization and new technology in thyroid ultrasound diagnosis. Results Ultrasound has become an important diagnostic technique in thyroid nodules. Both standardized diagnostic criteria and new ultrasound technologies are essential for improving the accuracy of thyroid ultrasound. In the standardization, since there are no global consensus exists, common characteristics such as a multi-feature diagnosis, the performance of lymph nodes, explicit indications of fine needle aspiration, and the diagnosis of special populations should be focused on. Besides, evidence suggests that AI technique has a good effect on the unavoidable limitations of traditional ultrasound, and the combination of diagnostic criteria and AI may lead to a great promotion in thyroid diagnosis. Conclusion Standardization and development of novel techniques are key factors to improving thyroid ultrasound, and both should be considered in normal clinical use.

关键词： Thyroid Ultrasound Guideline Artificial Intelligence Image Classification

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典型单兵作战场景与夜视镜

红外技术 2022年第4期44卷 315-327页

作者：蔡毅中国兵器科学研究院北京100089

本文分析了典型单兵作战场景,包括战场观察、侦察与监视、目标定位与激光指示、轻武器精准射击、狙击作战、与隐蔽物后/堑壕中的目标交战、夜间跳伞和机降、夜间作战、从明亮环境进入黑/昏暗室内/地下空间作战、低能见度环境的观察/搜索... 详细信息

本文分析了典型单兵作战场景,包括战场观察、侦察与监视、目标定位与激光指示、轻武器精准射击、狙击作战、与隐蔽物后/堑壕中的目标交战、夜间跳伞和机降、夜间作战、从明亮环境进入黑/昏暗室内/地下空间作战、低能见度环境的观察/搜索/射击等。为满足上述作战需求,单兵夜视镜正发展为与可见光、激光、卫星定位、数字指北针、通信等功能模块组合或集成,实现成像、测距、定位、计算、信息融合、火控解算、无线传输等复杂功能的单兵光电系统、轻武器光电火控系统和未来士兵系统,使单兵具有更全面和更精确的作战能力。

关键词：单兵单兵作战场景夜视镜

On structure of small contractions of odd dimensional projective varieties

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Science China Mathematics 2007年第4期50卷 495-502页

作者： Ji-hong SU yi-cai ZHAO LMAM Department of MathematicsJinan UniversityGuangzhou 510632China

Let X be a smooth projective variety of dimension 2k-1 (k≥3) over the complex number field. Assume that fR: X→Y is a small contraction such that every irreducible component Ei of the exceptional locus of fR is a smooth subvariety of dimension k. It is shown that each Ei is isomorphic to the k-dimensional projective space Pk, the k-dimensional hyperquadric surface Qk in Pk+1, or a linear Pk-1-bundle over a smooth curve.

关键词： projective variety small contraction exceptional locus

Potential effects of subduction rate in the key ocean on global warming hiatus

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Acta Oceanologica Sinica 2018年第3期37卷 63-68页

作者： CHEN Xingrong LIU Shan cai yi ZHANG Shouwen National Marine Environmental Forecasting Center State Oceanic Administration Key Laboratory of Research on Marine Hazards Forecasting National Marine Environmental Forecasting CenterState Oceanic Administration

In this study, the possible effects of subduction rate on global warming hiatus were investigated using Simple Ocean Data Assimilation（SODA） data. This study first analyzed the characteristics of the temporal and spatial distribution of global subduction rate, which revealed that the North Atlantic meridional overturning circulation region and the Antarctic Circumpolar Current region are the two main sea areas with great subduction *** this basis, four key areas were selected to explore the relationship between the local subduction rate and the global mean sea surface temperature. In addition, the reason for the variations in subduction rate was preliminarily explored. The results show good correspondence of the subduction of the key areas in the North Atlantic meridional overturning the circulation region and the Antarctic Circumpolar Current region to the global warming hiatus, with the former leading by about 10 years. The subduction process may be a physical mechanism by which the North Atlantic overturning circulation and the Antarctic Circumpolar Current act on the stagnation of global warming. Advection effect plays an important role in the variations in subduction in the key regions. In the Antarctic Circumpolar Current region, the magnitude of sea surface wind stress is closely related to the local changes in subduction.

关键词： global warming hiatus sea surface temperature inter-decadal variation subduction rate