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Establishment and verification of theoretical model for underwater light-sheet Scheimpflug LiDAR system

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Science China Technological Sciences 2025年第1期 54-61页

作者： Fei FENG Guojun WU bo LIU Xu zhao Yafeng WU jinghan XU Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences University of Chinese Academy of Sciences

The Scheimpflug imaging in the air can increase the depth-of-view and has been well studied with an accurate Scheimpflug imaging model. However, there is no corresponding underwater light-sheet Scheimpflug(ULSS) imaging *** a result, imaging accuracy cannot be ensured in the design phase, which mainly relies on the post-calibration. In this paper,the ULSS imaging model is firstly established, which gives the relationship between the pixel number and target distance, as well as that between the target distance and range resolution. A new experimental bracket and an underwater Scheimflug imaging lens were designed and developed. Based on this new device, several experiments were carried out in a pool to study the range resolution of this ULSS LiDAR, by which the correctness of the imaging model was verified. It also shows that the newly designed ULSS LiDAR can achieve a millimeter-level resolution within 8 m.

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NRS2002 assesses nutritional status of leukemia patients undergoing hematopoietic stem cell transplantation

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Chinese Journal of Cancer Research 2012年第4期24卷 299-303页

作者： Peng Liu zhao-Feng Zhang jing-jing Cai bo-Shi Wang Xia Yan Department of Clinical Nutrition Peking University People's Hospital Department of Nutrition and Food Hygiene School of Public HealthPeking University Department of Hematology Peking University People's Hospital

Objective： To discuss whether nutritional risk screening 2002 （NRS2002） is appropriate for nutritional risk screening for leukemia patients before and after hematopoietic stem cell transplantation （HSCT）, and whether there are risk differences in other conditions, such as age, gender and matching degree; to find the methods and indicators of nutritional risk screening for these patients before and after HSCT, in order to give timely intervention to guarantee the successful completion of the entire transplantation process. Methods： Nutritional risk of 99 leukemia patients was screened with NRS2002 before and after HSCT. The ^（2 test was applied to compare the risk differences between groups such as age, gender and matching degree, while the differences of other enumeration data, such as recent （1-3 months） weight loss, reduced food intake within one week and BMI, were compared by continuity correction. Results： Of the 99 leukemia patients, 22 cases （22.2 %） had nutritional risk before HSCT, while all patients had nutritional risk after ttSCT; there is no significant difference in nutritional risk between male and female, and patients of less than 30 years old, not-full matched, recent （1-3 months） weight loss, reduced food intake within a week or BMI 〈18.5 were more likely to have nutritional risk; and 77 cases （77.8%） had weight loss, among which 49 patients （63.6%） had more than 5% weight loss within one month. Conclusions= This study showed that leukemia patients should receive the nutritional risk screening conventionally before and after HSCT, and NRS2002 was only appropriate for nutritional risk screening before HSCT. More attention should be paid to the patients less than 30 years old or not-full matched. Weight change was one of the important nutritional indicators for patients after HSCT.

关键词： Henlatopoiedc stem cell transplantation leukemia nutrition nutrition screening

Reaction mechanism of self-propagating magnesiothermic reduction of ZrB_2 powders

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Rare Metals 2013年第4期32卷 408-413页

作者： Yong-Ting Zheng Hong-bo Li Zhong-Hai Xu jing zhao Pan Yang Science and Technology on Advanced Composites in Special Environments Laboratory Harbin Institute of Technology Materials Engineering Department North China Institute of Aerospace Engineering

Fine zirconium diboride （ZrB2） powders with high purity were successfully prepared by combustion synthesis through magnesiothermic reduction process in Mg-B2O3-ZrO2 system. The reaction mechanism was investigated by differential thermal analysis and quenching experiment. The results show that the whole magnesio-thermic reduction process includes three stages： first, molten B2O3 and Mg formed above the temperature of 650 ℃, and glassy B2O3 and solid ZrO2 particles were coated on the surface of the molten Mg; thus, the hollow balls can be formed when the molten Mg was exuded under capillary function. Second, ZrO2 particles reacted with molten Mg to form Zr and MgO with dissolution-precip-itation mechanism, which released a large amount of heat to induce the diffusion reaction between B203 and Mg to form B and MgO. Last, Zr reacted with B to form ZrB2 grains. The preparation of ZrB2 by self-propagating syn-thesis in Mg-B2O3-ZrO2 system is a solid-liquid-liquid reaction.

关键词： Reaction mechanism Magnesiothermicreduction Zirconium boride Self-propagating synthesis

Transjugular intrahepatic portosystemic shunt versus open splenectomy and esophagogastric devascularization for portal hypertension with recurrent variceal bleeding

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Hepatobiliary & Pancreatic Diseases International 2017年第2期16卷 169-175页

作者： An-Ping Su zhao-Da Zhang bo-Le Tian jing-Qiang Zhu Department of Thyroid Surgery West China Hospital Sichuan University Chengdu 610041 China Department of Hepatobiliopancreatic Surgery West China Hospital Sichuan University Chengdu 610041 China

BACKGROUND： Transjugular intrahepatic portosystemic shunt（TIPS） and open splenectomy and esophagogastric devascularization（OSED） are widely used to treat patients with portal hypertension and recurrent variceal bleeding（PHRVB）. This study aimed to compare the effectiveness between TIPS and OSED for the treatment of ***： The data were retrospectively retrieved from 479 cirrhotic patients（Child-Pugh A or B class） with PHRVB, who had undergone TIPS（TIPS group） or OSED（OSED group） between January 1, 2010 and October 31, ***： A total of 196 patients received TIPS, whereas 283 underwent OSED. Within one month after TIPS and OSED, the rebleeding rates were 6.1% and 3.2%, respectively（P=0.122）. Significantly lower incidence of pleural effusion,splenic vein thrombosis, and pulmonary infection, as well as higher hepatic encephalopathy rate, shorter postoperative length of hospital stay, and higher hospital costs were observed in the TIPS group than those in the OSED group. During the follow-up periods（29 months）, significantly higher incidences of rebleeding（15.3% vs 4.6%, P=0.001） and hepatic encephalopathy（17.3% vs 3.9%, P=0.001） were observed in the TIPS group than in the OSED group. The incidence of instent stenosis was 18.9%. The survival rates were 91.3% in the TIPS group and 95.1% in the OSED group. The long-term liver function did not worsen after either TIPS or ***： For the patients with liver function in the Child-Pugh A or B class, TIPS is not superior over OSED in terms of PHRVB treatment and rebleeding prevention.

关键词： liver cirrhosis portal hypertension recurrent variceal bleeding transjugular intrahepatic portosystemic shunt open splenectomy and esophagogastric devascularization

Design of online control and monitoring software for the CPPF system in the CMS Level-1 trigger upgrade

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Nuclear Science and Techniques 2018年第11期29卷 279-286页

作者： Li-bo Cheng Peng-Cheng Cao jing-Zhou zhao Zhen-An Liu School of Physical Sciences University of Chinese Academy of Sciences State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of Sciences

The concentration preprocessing and fan-out(CPPF) system is one of the electronic subsystems of the upgraded Compact Muon Solenoid(CMS) Level-1 trigger system. It includes, in hardware, eight specially designed CPPF cards, one CMS card called AMC13, one commercial Micro-TCA Carrier HUB(MCH) card, and a MicroTCA shelf. Powerful online software is needed for the system, including providing reliable configuration and monitoring for the hardware, and a graphical interface for executing all actions and publishing monitoring ***, to control and monitor the large amount of homogeneous hardware, the SoftWare Automating conTrol of Common Hardware(SWATCH) concept was proposed and developed. The SWATCH provides a generic structure and is flexible for customization. The structure includes a hardware access library based on the IPbus protocol, which assumes a virtual 32-bit address/32-bit data bus and builds a simple hardware access layer. Furthermore, the structure provides a graphical user interface, which is based on modern web technology and is accessible by web page. The CPPF controlling and monitoring online software was also customized from a common SWATCH cell, and provides afinite state machine(FSM) for configuring the entire CPPF hardware, and five monitoring objects for periodically collecting monitoring data from five main functional modules in the CPPF hardware. This paper introduces the details of the CPPF SWATCH cell development.

关键词： CPPF CMS Level-1 trigger SWATCH Monitor IPbus

Peroformance analysis of decode-and-forward MIMO relay channels with OSTBCs

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The Journal of China Universities of Posts and Telecommunications 2011年第1期18卷 16-22页

作者： HU Chun-jing CHEN Shu-ping WANG Wen-bo zhao Dong Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China Wireless Network Technology Department China Telecom Beijing Research Institute Beijing 100035 China

Performance analysis is presented for multiple-input multiple-output （MIMO） relay channels employing transmit antenna diversity with orthogonal space-time block codes （OSTBCs）, where the source and the destination are equipped with Ns and Nd antennas, and communicate with each other with the help of a multiple-antenna relay operating in decode-and-forward （DF） mode Over independent, not necessarily identical Rayleigh fading channels, exact closed-form symbol error rate （SER） expressions are derived for various digital modulation formats for both the OSTBC transmission with and without the direct link, The moment generating functions （MGFs） for overall system signal-noise ratios （SNRs） are also derived, based on which we present a unified SER analysis. The analysis shows that full spatial diversity order can be achieved for the DF M1MO relay channel by adopting OSTBC transmissions and maximal ratio combining （MRC） receptions. All the analytical results are confirmed through comparison with the results obtained using Mento Carlo simulations.

关键词： relay system MIMO OSTBC symbol error rate (SER)

MIL-53(Fe、Al)/PSf共混膜的制备与性能研究

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现代化工 2025年第1期45卷 190-194页

作者：张梅李博甘磊尤涵博赵维雪东北石油大学化学化工学院黑龙江大庆163318

通过溶剂热法合成了双金属有机框架MIL-53(Fe、Al)亲水性材料,与聚砜(PSf)共混并通过非溶剂致相分离法制备MIL-53(Fe、Al)/PSf共混膜。探究了MIL-53(Fe、Al)的添加质量分数对共混膜的结构和亲水性、渗透性、截留性以及抗污染性能的影响... 详细信息

通过溶剂热法合成了双金属有机框架MIL-53(Fe、Al)亲水性材料,与聚砜(PSf)共混并通过非溶剂致相分离法制备MIL-53(Fe、Al)/PSf共混膜。探究了MIL-53(Fe、Al)的添加质量分数对共混膜的结构和亲水性、渗透性、截留性以及抗污染性能的影响。结果表明,当MIL-53(Fe、Al)的添加质量分数为0.3%时,与原膜相比,水接触角降低了28.81°,达到54.78°;纯水通量提高了10.21倍,达到179.15 L/(m^(2)·h·bar)。MIL-53(Fe、Al)的加入,显著提高了PSf超滤膜的亲水性和抗污染性能。

关键词：双金属有机框架聚砜共混膜亲水性抗污染性

Noise-Tolerant ZNN-Based Data-Driven Iterative Learning Control for Discrete Nonaffine Nonlinear MIMO Repetitive Systems

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IEEE/CAA Journal of Automatica Sinica 2024年第2期11卷 344-361页

作者： Yunfeng Hu Chong Zhang bo Wang jing zhao Xun Gong Jinwu Gao Hong Chen State Key Laboratory of Automotive Simulation and Control Jilin UniversityJilin UniversityChangchun 130025China College of Communication Engineering Jilin UniversityJilin UniversityChangchun 130025China Department of Electromechanical Engineering University of MacaoMacao 999078China School of Artificial Intelligence Jilin UniversityChangchun 130012China IEEE College of Electronics and Information Engineering Tongji UniversityShanghai 200092China

Aiming at the tracking problem of a class of discrete nonaffine nonlinear multi-input multi-output(MIMO) repetitive systems subjected to separable and nonseparable disturbances, a novel data-driven iterative learning control(ILC) scheme based on the zeroing neural networks(ZNNs) is proposed. First, the equivalent dynamic linearization data model is obtained by means of dynamic linearization technology, which exists theoretically in the iteration domain. Then, the iterative extended state observer(IESO) is developed to estimate the disturbance and the coupling between systems, and the decoupled dynamic linearization model is obtained for the purpose of controller synthesis. To solve the zero-seeking tracking problem with inherent tolerance of noise,an ILC based on noise-tolerant modified ZNN is proposed. The strict assumptions imposed on the initialization conditions of each iteration in the existing ILC methods can be absolutely removed with our method. In addition, theoretical analysis indicates that the modified ZNN can converge to the exact solution of the zero-seeking tracking problem. Finally, a generalized example and an application-oriented example are presented to verify the effectiveness and superiority of the proposed process.

关键词： Adaptive control control system synthesis data-driven iterative learning control neurocontroller nonlinear discrete time systems

Mechanism of action of Linggui Zhugan Decoction in treating non-alcoholic fatty liver disease using untargeted metabolomics approach

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Traditional Medicine Research 2025年第2期10卷 65-76页

作者： Huan Pei Ren-Lin Li Xin-Ran Song Qian-Qian Wan Yu-Ming Wang Han-Zhou Li Wei-Quan Xu Jia-Bao Liao Wei-bo Wen jing Miao Huan-Tian Cui School of Basic Medicine Yunnan University of Chinese MedicineKunming 650599China School Clinical Medical College Yunnan University of Chinese MedicineKunming 650599China First School of Clinical Medicine Yunnan University of Chinese MedicineKunming 650599China School of Integrative Chinese and Western Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China Department of Pharmacy Tianjin Second People's HospitalTianjin 300192China

Background:Non-alcoholic fatty liver disease(NAFLD)is a liver disorder characterized by the accumulation and degeneration of fat in the liver cells,a condition that may further deteriorate and lead to cirrhosis and liver *** studies showed that metabolic dysfunction can promote NAFLD *** Zhugan Decoction(LGZGD)has therapeutic effects on *** mechanism of LGZGD still remains *** study was to examine the impact of LGZGD on the metabolic processes involved in the development of ***:A mice model of NAFLD was treated with *** therapeutic potential of LGZGD was evaluated by assessing the activity of transaminases,lipids levels of blood,and pathological changes in the liver of the mice model of ***,this study also evaluated the influence of LGZGD on liver inflammation and oxidative ***:The results of untargeted metabolomics analysis showed that LGZGD reduced the disordered lipid metabolism in NAFLD *** improved the oxidative stress and also reduced the levels of pro-inflammatory cytokines in the *** metabolomics analysis of liver samples revealed that LGZGD treatment improved metabolic disorders,including alanine,aspartate,glutamate,glycerophospholipid metabolism,and citrate *** RT-qPCR and Western blot results showed that LGZGD could regulate the expression of key enzymes in the metabolic pathway of the citrate cycle,including ATP-citrate lyase(ACLY),alanine-glyoxylate aminotransferase-2(AGXT2),phosphatidylethanolamine N-methyltransferase(PEMT),and succinate dehydrogenase(SDH).Conclusion:We found that LGZGD can treat NAFLD by reducing inflammatory responses,inhibiting oxidative stress,regulating alanine,aspartate,glutamate,and glycerophospholipid metabolism,and citrate cycle pathways.

关键词： NAFLD LGZGD untargeted metabolomics glycerophospholipid metabolism citrate cycle