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Biomedical and Environmental Sciences 2024年第5期37卷 526-530页

作者： HUANG Shi Ting LI Shang Yuan LI Xin Yu ZHU Ying ZHU Lin ZHANG Jia yan zhao yan sheng DAGLIA Maria XIAO Xiang BAI Juan School of Food and Biological Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Department of Pharmacy University of Napoli FedericoⅡVia D.Montesano 4980131 NaplesItaly International Research Center for Food Nutrition and Safety Jiangsu UniversityZhenjiang 212013JiangsuChina

Bitter melon(Momordica Charania L.),a member of the Cucurbitaceae family,is widely distributed across tropical and subtropical ***,an important functional component of bitter melon,has been proven to exert hypoglycemic effects similarly to insulin,and also possesses lipid-lowering properties inhibiting preadipocyte differentiation and fat synthesis^([1]).

关键词： melon Momordica subtropical

超声定位引导下经皮肝穿刺胆管引流术治疗恶性梗阻性黄疸患者的疗效及安全性

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医药论坛杂志 2024年第9期45卷 1000-1004,F0003页

作者：梁国胜赵艳生濮阳市油田总医院超声科河南濮阳457001 濮阳市油田总医院普外科河南濮阳457001

目的探讨超声定位引导下经皮肝穿刺胆管引流术(percutaneous transhepatic cholangic drainage,PTCD)治疗恶性梗阻性黄疸(malignant obstructive jaundice,MOJ)患者的临床疗效,以及对患者创伤性应激反应、肝功能、凝血功能的影响。方法... 详细信息

目的探讨超声定位引导下经皮肝穿刺胆管引流术(percutaneous transhepatic cholangic drainage,PTCD)治疗恶性梗阻性黄疸(malignant obstructive jaundice,MOJ)患者的临床疗效,以及对患者创伤性应激反应、肝功能、凝血功能的影响。方法选取濮阳市油田总医院2021年1月至2022年12月收治的124例MOJ患者,采用随机数字表法将患者分为常规PTCD组和超声引导下PTCD组,各62例。超声引导下PTCD组在超声定位引导下进行PTCD手术;常规PTCD组在常规的X线引导下进行PTCD手术。采用秩和检验比较两组临床疗效,采用独立样本t检验比较两组手术指标,采用配对样本t检验比较两组术前、术后不同时间点创伤应激指标,如血清去甲肾上腺素(NE)、皮质醇(Cor)、超敏C反应蛋白(hs-CRP),肝功能指标,如血清总胆红素(TBil)、直接胆红素(DBil)、丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST),凝血功能指标,如活化部分的凝血活酶时间(APTT)、凝血酶原时间(PT),采用卡方检验比较两组并发症情况。结果术后2周,超声引导下PTCD组的临床总有效率为90.32%,略高于常规PTCD组的83.87%,但组间比较无显著性差异(P>0.05);超声引导下PTCD组手术用时明显短于常规PTCD组,一次性穿刺成功率(95.16%)明显高于常规PTCD组(59.68%)(P<0.05);术后3 d和术后1周,两组血清Cor、NE、hs-CRP水平均呈先升高后降低的趋势,且超声引导下PTCD组血清Cor、NE、hs-CRP水平波动幅度小于常规PTCD组(P<0.05);术后1周,超声引导下PTCD组血清ALT、AST、TBil、DBil水平明显低于常规PTCD组,而PT、APTT明显高于常规PTCD组(P<0.05)。结论超声定位引导下PTCD手术与常规X线PTCD手术均有较好的临床疗效,但超声定位引导下PTCD手术用时更短,一次性穿刺成功率和手术安全性更高,且可进一步减轻手术创伤性应激反应,改善患者的肝功能和凝血功能,有助于术后快速恢复。

关键词：恶性梗阻性黄疸经皮肝穿刺胆管引流术超声引导应激反应肝功能凝血功能

Stable Isotope Dilution Analysis of Gibberellin Residues in Tomato Paste by Liquid Chromatography-Tandem Mass Spectrometry

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Chemical Research in Chinese Universities 2012年第5期28卷 797-801页

作者： SUN Li zhao yan-sheng NIE Xue-mei LING Yun CHU Xiao-gang SHANG De-jun DONG Ying Institute of Food Safety Chinese Academy of Inspection and QuarantineBeijing 100123P.R.China School of Food and Biological Engineering Jiangsu UniversityZhenjiang 212013P.R.China Xinjiang Extry-exit Inspection and Quarantine Bureau Urumqi 830063P.R.China

An accurate and sensitive method for the simultaneous determination of gibberellic acid（GA3）, gibberellin A4（GA4） and gibberellin A7（GA7） residues in tomato paste was developed by coupling solid phase extraction to high performance liquid chromatography-tandem mass spectrometry（LC-MS/MS） with electrospray ionization based stable isotope dilution analysis（SIDA）. The isotope labeled internal standard can compensate for the losses during the extraction and cleanup steps and for discrimination due to ion suppression. After extraction from methanol, hydrophile lipophilic balance（HLB） solid phase extraction（SPE） column was tested for the capacity of the cleanup of the tomato paste in compared with C18 SPE column which is the common way to the detection of GAs, and the former gained better result. Spiked experiments were performed in the non-contaminated tomato pastes and the recoveries of GA3, GA4 and GA7 were 42.6%―75.0% in external standard method（ESM） and 91.1%―103.8% in internal standard method（ISM） respectively. The validities of this method were investigated and good analytical performance for the three GAs was obtained, including low limits of method detection（2 ng/g for GA3 and GA4, 0.3 ng/g for GA7）, excellent linear dynamic ranges（5―500 ng/g for GA3 and GA4, 1―100 ng/g for GA7） and good relative standard deviation ranges（4.8%―9.4% for the intra-day test and 3.5%―11.9% for the inter-day test）.

关键词： Gibberellin Tomato paste Liquid chromatography-tandem mass spectrometry(LC-MS/MS) Stable isotope dilution analysis(SIDA)

Microphase Separation of Semiflexible Ring Diblock Copolymers

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Chinese Journal of Polymer Science 2024年第2期42卷 267-276,I0011页

作者： Dan-yan Qin sheng-Da zhao Zhi-Xin Liu Jing Zhang Xing-Hua Zhang School of Physical Science and Engineering Beijing Jiaotong UniversityBeijing100044China

Aiming at the difficult problem of solving the conformation statistics of complex polymers, this study presents a novel and concise conformation statistics theoretical approach based on Monte Carlo and Neural Network method. This method offers a new research idea for investigating the conformation statistics of complex polymers, characterized by its simplicity and practicality. It can be applied to more complex topological structure, more higher degree of freedom polymer systems with higher dimensions, theory research on dynamic self-consistent field theory and polymer field theory, as well as the analysis of scattering experimental data. The conformation statistics of complex polymers determine the structure and response properties of the system. Using the new method proposed in this study, taking the semiflexible ring diblock copolymer as an example, Monte Carlo simulation is used to sample this ring conformation to construct the dataset of polymer. The structure factor describing conformation statistics are expressed as continuous functions of structure parameters by neural network supervised learning. This is the innovation of this work. As an application, the structure factors represented by neural networks were introduced into the random phase approximation theory to study the microphase separation of semiflexible ring diblock copolymers. The influence of the ring's topological properties on the phase transition behavior was pointed out.

关键词： Ring copolymer Diblock copolymers Semiflexible The order-disorder transition

Machine learning optimization strategy of shaped charge liner structure based on jet penetration efficiency

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DEFENCE TECHNOLOGY 2024年第9期39卷 23-41页

作者： zhao, Ziqi Li, Tong sheng, Donglin Chen, Jian yan, Amin Chen, yan Wang, Haiying Chen, Xiaowei Dai, Lanhong Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China Univ Chinese Acad Sci Sch Future Technol Beijing 100049 Peoples R China Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China Beijing Inst Technol State Key Lab Explos Sci & Technol Beijing 100081 Peoples R China

Shaped charge liner (SCL) has been extensively applied in oil recovery and defense industries. Achieving superior penetration capability through optimizing SCL structures presents a substantial challenge due to intricate rate-dependent processes involving detonation-driven liner collapse, high-speed jet stretching, and penetration. This study introduces an innovative optimization strategy for SCL structures that employs jet penetration efficiency as the primary objective function. The strategy combines experimentally validated finite element method with machine learning (FEM-ML). We propose a novel jet penetration efficiency index derived from enhanced cutoff velocity and shape characteristics of the jet via machine learning. This index effectively evaluates the jet penetration performance. Furthermore, a multi-model fusion based on a machine learning optimization method, called XGBOOST-MFO, is put forward to optimize SCL structure over a large input space. The strategy's feasibility is demonstrated through the optimization of copper SCL implemented via the FEM-ML strategy. Finally, this strategy is extended to optimize the structure of the recently emerging CrMnFeCoNi high-entropy alloy conical liners and hemispherical copper liners. Therefore, the strategy can provide helpful guidance for the engineering design of SCL. (c) 2024 China Ordnance Society. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license.

关键词： Jet penetration efficiency Shaped charge liner FEM-ML XGBOOST MFO High-entropy alloy LONG ROD PERFORMANCE COMPRESSIBILITY EXTENSION SEARCH DESIGN MODEL

Coupled dynamic response analysis of multi-column floating offshore wind turbine with low center of gravity

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Journal of Ocean Engineering and Science 2024年第1期9卷 25-39页

作者： Jie yang yan-ping He Yong-sheng zhao Xiao-yan yang Guo-rong Zhang State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration(CISSE) Shanghai Jiao Tong UniversityShanghai 200240China School of Naval Architecture Ocean&Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China Faculty of Maritime and Transportation Ningbo UniversityNingbo 315211China

To realize the application of the floating offshore wind turbine(FOWT)from deep to relatively shallow waters,a new concept of multi-column floating wind turbine platform with low center of gravity(CG)is designed and *** multi-column low CG platform is designed to support a 6MW wind turbine class and operated at a water depth of 50m in the South China *** frequency domain software WADAM and time domain software NREL-FAST are used to simulate coupled dynamic responses of the floating wind turbine system with second-order wave loads *** dynamic behaviors of multi-column low CG FOWT system under normal operation and parked conditions are *** influence of second-order wave force on the motion responses of the multi-column platform,fore-aft force and moment of the tower base and mooring force are researched *** results demonstrate that the coupled dynamic responses at rated operating condition and extreme condition meet the normal operating requirements and extreme survival requirements of FOWT system in the shallow water(50m)of South China *** addition,it is found that,the wave frequency response gradually replaces the second-order low frequency response as the main influencing factor of the coupled dynamic response of the FOWT system with the increasing severity of the sea ***,in general,the magnitude of second-order low frequency response increases with the increasing severity of the design load ***,in the subsequent design of the shallow water FOWT system,the second-order effects should be paid enough attention.

关键词： Floating offshore wind turbine Multi-column platform Second-order wave force Concept design Coupled dynamic response

Porous Ti_(3)C_(2)T_(x) MXene nanosheets sandwiched between polyimide fiber mats for electromagnetic interference shielding

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Nano Research 2024年第3期17卷 2070-2078页

作者： Wenhao Liang Juntao Wu Shan Zhang Pei-yan zhao Yi Cong Yongqiang Guo Guang-sheng Wang Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191China

With the rapid development of wireless communication technology and electronic devices,the issue of electromagnetic interference(EMI)is becoming increasingly *** a new and flexible electromagnetic interference shielding material has become a challenging ***,a sandwich-structured EMI shielding composite film was prepared using electrospinning and vacuum filtration *** this process,a porous MXene was synthesized through a reaction with cobalt acetate and served as the intermediate layer in the composite film to shield electromagnetic *** electrospun polyimide(PI)fibers were used as the top and bottom layers of the composite film,which can protect the porous MXene from *** lightweight and flexible composite film integrates electromagnetic interference shielding and thermal insulation capabilities,showing excellent comprehensive *** composite film achieves an EMI shielding effectiveness of 48.8 dB in X-band(8.2–12.4 GHz),and absolute shielding effectiveness of the composite film reached a satisfying 4142.43(dB·cm^(2))/*** to the design of a multi-layer porous structure,the density of the composite film is 0.65 g/***,the thermal conductivity of the film is 0.042 W/(m·K)due to the clamping of electrospun PI fibers,showing excellent thermal insulation ***,the composite film exhibits excellent high and low-temperature *** summary,this work provides a feasible strategy for preparing a lightweight polymer-based EMI shielding film.

关键词： porous MXene polyimide electromagnetic interference shielding thermal insulation

Development of a prognostic scoring system for hepatic vena cava Budd-Chiari syndrome with hepatocellular carcinoma

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Hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 370-375页

作者： sheng-yan Liu Lu-Hao Li zhao-Chen Liu Su-Xin Li Xiao-Wei Dang Department of Hepatopancreatobiliary Surgery the First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China Budd-Chiari Syndrome Diagnosis and Treatment Center of Henan Province Zhengzhou 450052China

Background:Hepatocellular carcinoma(HCC)is a serious complication of hepatic vena cava Budd-Chiari syndrome(HVC-BCS)that significantly reduces the survival time of *** study aimed to analyze the prognostic factors influencing the survival of HVC-BCS patients with HCC and to develop a prognostic scoring ***:The clinical and follow-up data of 64 HVC-BCS patients with HCC who received invasive treatment at the First Affiliated Hospital of Zhengzhou University between January 2015 and December 2019 were retrospectively ***-Meier curves and log-rank tests were used to analyze the survival curve of patients and the difference in prognoses between the *** and multivariate Cox regression analyses were performed to analyze the influence of biochemical,tumor,and etiological characteristics on the total survival time of patients,and a new prognostic scoring system was developed according to the regression coefficients of the independent predictors in the statistical *** prediction efficiency was evaluated using the time-dependent receiver operating characteristics curve and concordance ***:Multivariate analysis showed that serum albumin level7 cm(HR=8.623,95%CI:3.771-19.715,P<0.001),and inferior vena cava stenosis(HR=3.612,95%CI:1.646-7.928,P=0.001)were independent predictors of survival.A prognostic scoring system was developed according to the above-mentioned independent predictors,and patients were classified into grades A,B,C and *** differences in survival were found among the four ***:This study successfully developed a prognostic scoring system for HVC-BCS patients with HCC,which is helpful for clinical evaluation of patient prognosis.

关键词： Budd-Chiari syndrome Hepatocellular carcinoma Prognostic factors Inferior vena cava stenosis Prognostic scoring system

Highly Transparent Fire-resistant Coatings with Intumescent Three-source Integration

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Chinese Journal of Polymer Science 2024年第7期42卷 907-915,I0005页

作者： Xiao-Liang Zeng Xin-sheng Lan yan Wang Lin Zhang De-Ming Guo Hai-Bo zhao State Grid Sichuan Electric Power Research Institute Chengdu610041China The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(Ministry of Education) National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan)State Key Laboratory of Polymer Materials EngineeringCollege of ChemistrySichuan UniversityChengdu610064China

Wood,a readily available and sustainable natural resource,has found widespread use in construction and ***,its inherent flammability poses a potential fire *** intumescent fire-retardant coatings effectively mitigate this risk,achieving high transparency in such coatings presents a significant *** our approach,we employed a cross-linked network of phytic acid anion and N-[3-(trimethoxysilyl)propyl]-N,N,N-trimethylammonium cation to create a transparent"three-in-one"intumescent *** collaborative P/N/Si flame-retardant effect markedly improved the intumescent char-forming capability,preventing the wood from rapid *** resulted in a substantial reduction in heat release(13.9%decrease in THR)and an increased limiting oxygen index(LOI)value of 35.5%.Crucially,the high transparency of the coating ensured minimal impact on the wood's appearance,allowing the natural wood grains to remain clearly *** innovative approach provides a straightforward method for developing transparent intumescent flame-retardant coatings suitable for wooden *** potential applications extend to preserving ancient buildings and heritage conservation efforts.

关键词： Fire-resistant coating Flame retardancy Wood Transparency

Determination of Fipronil and Its Metabolites in Eggs by Indirect Competitive ELISA and Lateral-flow Immunochromatographic Strip

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生物医学与环境科学：英文版 2020年第9期33卷 731-734页

作者： ZHOU Xing Hua ZHANG Cai Qin ZHANG Xun SUN Cheng LI Jie XIAO Xiang zhao yan sheng OUyanG Qin WANG Yunu School of Food and Biological Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Jiangsu Meizheng Biological Technology Co.Ltd. Wuxi 214000JiangsuChina Jiangsu Jiangnan Biotech Co. Ltd.Zhenjiang 212013JiangsuChina

Fipronil is a phenylpyrrole insecticide that is widely used to control a variety of pests associated with crops in both agricultural and non-agricultural areas[1]. In the natural environment, fipronil can degrade to fipronil-desulfinyl, fipronil-sulfone, or fipronil-sulfide by photolysis, oxidation, or reduction,and these metabolites are more toxic to animal tissue than the parent molecule[2].

关键词： crops pests flow