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Slope excavation quality assessment and excavated volume calculation in hydraulic projects based on laser scanning technology

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Water Science and Engineering 2015年第2期8卷 164-173页

作者： Chao Hu Yi-hong Zhou Chun-ju Zhao zhi-guo pan School of Water Resources and Hydropower Engineering Wuhan University College of Hydraulic and Environmental Engineering China Three Gorges University Collaborative Innovation Center for Geo-Hazards and Eco-Environment in Three Gorges Area

Slope excavation is one of the most crucial steps in the construction of a hydraulic project. Excavation project quality assessment and excavated volume calculation are critical in construction management. The positioning of excavation projects using traditional instruments is inefficient and may cause error. To improve the efficiency and precision of calculation and assessment, three-dimensional laser scanning technology was used for slope excavation quality assessment. An efficient data acquisition, processing, and management workflow was presented in this study. Based on the quality control indices, including the average gradient, slope toe elevation, and overbreak and underbreak,cross-sectional quality assessment and holistic quality assessment methods were proposed to assess the slope excavation quality with laserscanned data. An algorithm was also presented to calculate the excavated volume with laser-scanned data. A field application and a laboratory experiment were carried out to verify the feasibility of these methods for excavation quality assessment and excavated volume calculation. The results show that the quality assessment indices can be obtained rapidly and accurately with design parameters and scanned data, and the results of holistic quality assessment are consistent with those of cross-sectional quality assessment. In addition, the time consumption in excavation quality assessment with the laser scanning technology can be reduced by 70%e90%, as compared with the traditional method. The excavated volume calculated with the scanned data only slightly differs from measured data, demonstrating the applicability of the excavated volume calculation method presented in this study.

关键词： Slope excavation Quality assessment Volume calculation Three-dimensional laser scanning technology

Chlorine poisoning caused by improper mixing of household disinfectants during the COVID-19 pandemic:Case series

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World Journal of Clinical Cases 2022年第25期10卷 8872-8879页

作者： guo-Dong Lin Jie-Yi Wu Xiao-Bo Peng Xiao-Xia Lu Zhong-Ying Liu zhi-guo pan Ze-Wu Qiu Jian-Guang Dong Department of Critical Care Medicine General Hospital of Southern Theater Command of PLAGuangzhou 510010Guangdong ProvinceChina Senior Department of Hematology The Fifth Medical Center of PLA General HospitalBeijing 100071China

BACKGROUND Misuse of disinfectants during the coronavirus disease 2019 pandemic has led to several poisoning ***,there are few clinical case reports on poisoning caused by improper mixing of household *** To summarize the clinical characteristics and treatment effects of chlorine poisoning caused by improper mixing of hypochlorite bleach with acidic cleaning *** We retrospectively analyzed baseline and clinical data,clinical symptoms,and treatment methods of seven patients with chlorine poisoning who were admitted to the National Army Poisoning Treatment *** Among the seven patients,the average poisoning time(exposure to admission)was 57 h(4-240 h).All patients were involved in cleaning *** computed tomography scans revealed bilateral lung effusions or inflammatory changes in five *** partial pressure of oxygen decreased in six patients,and respiratory failure occurred in *** patients had different degrees of increase in white blood cell *** oxygen therapy,non-invasive mechanical ventilation,anti-inflammatory corticosteroids,antioxidants,and antibiotics were administered for *** average length of hospital stay was 7 d(4-9 d).All seven patients recovered and were *** Improper mixing of household disinfectants may cause damage to the respiratory system due to chlorine *** may improve lung exudation in severe cases,and symptomatic supportive treatment should be performed early.

关键词： Hypochlorite bleach Acidic cleaning agents Chlorine poisoning Toxic lung injury Household disinfectant

Ten-year retrospective analysis of multiple trauma complicated by pulmonary contusion

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Journal of Medical Colleges of PLA(China) 2014年第1期29卷 51-58页

作者： Hui Jin Li-Qun Tang zhi-guo pan Na Peng Qiang Wen You-Qing Tang Lei Su Intensive Care Unit General Hospital of Guangzhou Military Command

Background: This study reports a 10-year retrospective analysis of multiple trauma complicated by pulmonary contusion. The purpose of this study is to ascertain the risk factors for mortality due to trauma in patients with pulmonary contusion, the impact of various treatment options for prognosis, and the risk factors for concurrent Acute Respiratory Distress Syndrome(ARDS). Methods: We retrospectively analyzed 252 trauma patients with lung contusion admitted to the General Hospital of Guangzhou Military Command from January 2000 to June 2011 by using the statistical processing system SPSS 17.0 for Windows. Results: We included 252 patients in our study, including 214 males and 38 females. The average age was 37.1±14.9 years. There were 110 cases admitted to the ICU, of which 26 cases with ARDS. Nine of the 252 patients died. We compared those who survived with those who died by gender and age, the difference was not statistically significant(P=0.199, P=0.200). Separate univariate analysis of those who died and those who survived found that shock on admission(P=0.000), coagulation disorders(P=0.000), gastrointestinal bleeding(P=0.02), the need for emergency surgery on admission(P=0.000), pre-hospital intubation(P=0.000), blood transfusion within 24 hours(P=0.006), the use of mechanical ventilation(P=0.000), and concurrent ARDS(P=0.000) are poor prognosis risk factors. Further logistic analysis, including the admission GCS score(OR=0.708, 95%CI 0.516-0.971, P=0.032), ISS score(OR 1.135, 95%CI 1.006-1.280, P=0.039), and concurrent ARDS(OR=15.814, 95%CI 1.819-137.480, P=0.012), identified the GCS score, ISS score and concurrent ARDS as independent risk factors of poor prognosis. Shock(OR=9.121, 95%CI 0.857-97.060, P=0.067) was also related to poor prognosis. Patients with injury factors such as road accident, falling injury, blunt injury and crush injury, et al.(P=0.039), infection(P=0.005), shock(P=0.004), coagulation disorders(P=0.006), emergency surgery(P=0.01), pre

关键词： multiple trauma pulmonary disease retrospective studies

Sky location of massive black hole binaries in the foreground of Galactic white dwarf binaries

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 97-108页

作者： pan guo Hong-Bo Jin Cong-Feng Qiao Yue-Liang Wu The International Centre for Theoretical Physics Asia-Pacific University of Chinese Academy of Sciences The School of Physical Sciences University of Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University National Astronomical Observatories Chinese Academy of Sciences Institute of Theoretical Physics Chinese Academy of Sciences

For space-based gravitational wave （GW） detection,the main noise source for massive black hole binaries （MBHBs） is attributed to approximately 10～7double white dwarf binaries in the *** a GW source,the amplitude of the detector response,recorded by a space-based gravitational wave detector,exhibits a modulation effect with a year period when observing the source from various orbital *** the adverse conditions mentioned above,where there is a strong foreground noise and annual modulation in the signals,we employed the wavelet transform and the strong-amplitude relevant orbital position search methods,which allows the weak MBHB sources to achieve higher locating *** detail,for two MBHB sources of lower intensity,the precision of luminosity distance,represented by the ratio ?DL/DLat the 95%confidence level,is enhanced by factors of ～*** angular resolutions,denoted by??s,are enhanced by a factor of ～*** improvements increase the number of detectable GW sources,facilitate multi-messenger follow-up observations and provide constraints on the cosmological constant.

关键词： space-based gravitational wave detection gravitational waves massive black hole binaries

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小型双足机器人设计及步态规划

机械工程师 2007年第8期 48-50页

作者：郭志攀杜志江哈尔滨工业大学机器人研究所哈尔滨150080

针对现有仿人机器人造价高的缺点,文中设计了一款低成本的小型双足机器人研究平台。根据仿生学原理确定机器人的比例尺寸,根据机器人的功能要求确定其自由度配置,选择了合适的材料和驱动元件。对所设计的机器人进行了步态规划,并在仿真... 详细信息

针对现有仿人机器人造价高的缺点,文中设计了一款低成本的小型双足机器人研究平台。根据仿生学原理确定机器人的比例尺寸,根据机器人的功能要求确定其自由度配置,选择了合适的材料和驱动元件。对所设计的机器人进行了步态规划,并在仿真软件中对机器人静态步行进行了仿真。

关键词：小型双足机器人双足步行步态规划运动学仿真

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MM440变频器Web控制的设计与实现

大连民族学院学报 2010年第5期12卷 429-431,435页

作者：孙进生郭志攀大连民族学院机电信息工程学院辽宁大连116605 河北理工大学信息学院河北唐山063009

将Internet技术和嵌入式技术结合起来,实现了一种利用Web浏览器控制西门子MM440变频器运行的方法。硬件电路采用LM3S8962微控制器和外围数/模转换及开关量控制模块。软件设计包括以下几个方面:移植与配置实时操作系统μC/OS-Ⅱ和嵌入式T... 详细信息

将Internet技术和嵌入式技术结合起来,实现了一种利用Web浏览器控制西门子MM440变频器运行的方法。硬件电路采用LM3S8962微控制器和外围数/模转换及开关量控制模块。软件设计包括以下几个方面:移植与配置实时操作系统μC/OS-Ⅱ和嵌入式TCP/IP协议,设计HTTP服务器主程序、数模转换模块程序及开关量控制程序。用户端只需使用浏览器就能实现变频器的启动、停止和频率设定等功能。

关键词： Web控制 HTTP 嵌入式系统变频器

Engineering atomic Rb-N configurations to tune radical pathways for highly selective photocatalytic H2O2 synthesis coupled with biomass valorization

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Journal of Energy Chemistry 2025年第1期100卷 215-225页

作者： Jiaye Li Shuang pan Yihuang Chen Qiong Liu College of Chemistry and Materials Engineering Wenzhou University Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology (China) Institute of Analysis Guangdong Academy of Sciences (China National Analytical CenterGuangzhou)

Photocatalytic oxygen reduction for hydrogen peroxide （H2O2） synthesis presents a green and costeffective production ***,achieving highly selective H2O2synthesis remains challenging,necessitating precise control over free radical reaction pathways and minimizing undesirable oxidative ***,we report for the visible light-driven simultaneous co-photocatalytic reduction of O2to H2O2and oxidation of biomass using the atomic rubidium-nitride modified carbon nitride（CNRb）.The optimized CNRb catalyst demonstrates a record photoreduction rate of 8.01 mM h-1for H2O2generation and photooxidation rate of 3.75 mM h-1for furfuryl alcohol to furoic acid,achieving a remarkable solar-to-chemical conversion （SCC） efficiency of up to 2.27%.Experimental characterizations and DFT calculation disclosed that the introducing atomic Rb–N configurations allows for the high-selective generation of superoxide radicals while suppressing hydroxyl free radical *** is because the Rb–N serves as the new alternative site to perceive a stronger connection position for O2adsorption and reinforce the capability to extract protons,thereby triggering a high selective redox product *** study holds great potential in precisely regulating reactive radical processes at the atomic level,thereby paving the way for efficient synthesis of H2O2coupled with biomass valorization.

关键词： Atomic economy Radical pathway regulation Rubidium atom coordination Biomass valorization

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舰艇战法实验平台研究综述

系统仿真学报 2009年第21期21卷 6846-6850页

作者：陈建华李刚强赵志允潘国民海军兵种指挥学院一系广州510430

从舰艇战术定量研究需要出发,重新阐释了战法实验平台和作战实验室的概念,全面分析阐述了国内外作战实验室建设和战法实验平台研究现状,论述了战法实验平台结构和实现战法实验平台的面向对象、分布式交互仿真、分布式人工智能、虚拟现... 详细信息

从舰艇战术定量研究需要出发,重新阐释了战法实验平台和作战实验室的概念,全面分析阐述了国内外作战实验室建设和战法实验平台研究现状,论述了战法实验平台结构和实现战法实验平台的面向对象、分布式交互仿真、分布式人工智能、虚拟现实和基于HLA的系统集成等技术,归纳了战法实验平台的作用、特点和发展趋势,为深入研究舰艇战法实验平台提供理论支持。

关键词：舰艇战术定量研究战法实验作战实验室

Unlocking the future:Mitochondrial genes and neural networks in predicting ovarian cancer prognosis and immunotherapy response

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World Journal of Clinical Oncology 2025年第1期16卷 43-52页

作者： zhi-Jian Tang Yuan-Ming pan Wei Li Rui-Qiong Ma Jian-Liu Wang Department of Obstetrics and Gynecology Peking University People’s HospitalBeijing 100044China Cancer Research Center Beijing Chest HospitalBeijing 101149China Department of Thoracic Surgery Sichuan Provincial People's HospitalChengdu 610072Sichuan ProvinceChina

BACKGROUND Mitochondrial genes are involved in tumor metabolism in ovarian cancer(OC)and affect immune cell infiltration and treatment *** To predict prognosis and immunotherapy response in patients diagnosed with OC using mitochondrial genes and neural *** Prognosis,immunotherapy efficacy,and next-generation sequencing data of patients with OC were downloaded from The Cancer Genome Atlas and Gene Expression *** genes were sourced from the MitoCarta3.0 *** discovery cohort for model construction was created from 70% of the patients,whereas the remaining 30% constituted the validation *** the expression of mitochondrial genes as the predictor variable and based on neural network algorithm,the overall survival time and immunotherapy efficacy(complete or partial response)of patients were *** In total,375 patients with OC were included to construct the prognostic model,and 26 patients were included to construct the immune efficacy *** average area under the receiver operating characteristic curve of the prognostic model was 0.7268[95% confidence interval(CI):0.7258-0.7278]in the discovery cohort and 0.6475(95%CI:0.6466-0.6484)in the validation *** average area under the receiver operating characteristic curve of the immunotherapy efficacy model was 0.9444(95%CI:0.8333-1.0000)in the discovery cohort and 0.9167(95%CI:0.6667-1.0000)in the validation *** The application of mitochondrial genes and neural networks has the potential to predict prognosis and immunotherapy response in patients with OC,providing valuable insights into personalized treatment strategies.

关键词： Ovarian cancer Mitochondria Prognosis Immunotherapy Neural network