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Protective effect of high-oleic acid peanut oil and extra-virgin olive oil in rats with diet-induced metabolic syndrome by regulating branched-chain amino acids metabolism

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Journal of Integrative Agriculture 2022年第3期21卷 878-891页

作者： zhao zhi-hao SHI Ai-min GUO Rui LIU Hong-zhi HU Hui WANG Qiang Institute of Food Science and Technology Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products ProcessingMinistry of Agriculture and Rural AffairsBeijing 100193P.R.China Collaborative Innovation Center for Modern Grain Circulation and Safety College of Food Science and EngineeringNanjing University of Finance and EconomicsNanjing 210023P.R.China

High-oleic acid peanut oil(HOPO)and extra-virgin olive oil(EVOO)have been reported previously to have an attenuating effect on metabolic syndrome(MS).This study aimed to evaluate the metabolic effect of HOPO and EVOO supplementation in attenuating MS and the role of gut microbiota in regulating the metabolic ***-Dawley rats were continuously fed with a normal diet,high-fructose and high-fat(HFHF)diet,HFHF diet containing HOPO,or a HFHF diet containing EVOO for 12 *** metabolomics profiles of feces and serum samples were compared using untargeted metabolomics based on UPLC-Q/*** Least Squares Discriminant Analysis(PLS-DA)was used to identify the potential fecal and serum biomarkers from different *** between gut microbiota and biomarkers was assessed,and pathway analysis of serum biomarkers was *** in metabolic patterns in feces and serum were observed among different *** were 8 and 12 potential biomarkers in feces and 15 and 6 potential biomarkers in serum of HOPO group and EVOO group,respectively,suggesting that HOPO and EVOO supplementation mainly altered amino acids,peptides,and their analogs in feces and *** branched-chain amino acids(BCAAs)biosynthesis pathway was identified as a major pathway regulated by HOPO or *** study suggests that HOPO and EVOO supplementation ameliorate diet-induced MS,mainly via modulation of the BCAAs biosynthesis pathway.

关键词： metabolic syndrome high-oleic acid peanut oil extra-virgin olive oil metabolomics UPLC-Q/TOF-MS

Design and synthesis of novel chiral molecular tweezers based on deoxycholic acid

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Chinese Chemical Letters 2008年第9期19卷 1051-1054页

作者： zhi Gang zhao Xing Li Liu Yi Zhong College of Chemistry and Environmental Protection Engineering Southwest University for Nationalities Chengdu 610041 China

A novel type of chiral molecular tweezers has been designed and synthesized by using deoxycholic acid as backbone and ethanoyl and the chiral unsymmetrical urea unit as arms. Their structures were characterized by 1H NMR, IR, MS spectra and elemental analysis. These molecular tweezers showed good binding ability for neutral molecules and chiral molecules.

关键词： Molecular tweezer Deoxycholic acid Synthesis Molecular recognition

Phosphorus Removal of High Phosphorus Iron Ore by Gas-Based Reduction and Melt Separation

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Journal of Iron and Steel Research International 2010年第9期17卷 1-6页

作者： TANG Hui-qing GUO Zhan-cheng zhao zhi-long Key Laboratory of Ecological and Recycle Metallurgy of Ministry of Education University of Science and Technology Beijing Beijing 100083 China

A new method （gas-based separation plus melt separation） has been proposed to remove phosphorus of the high phosphorus iron ore which was 1.25 % of phosphorus content and 50. 0% of iron content. HSC chemistry package and the coexistence theory of slag structure were adopted for theoretical analysis. The gas-based reduction was carried out using a fixed bed reactor and the ore sample of 80 g with an average particle size of 2 mm were reduced using CO or H2 at temperature of 1 073 K for 5 hours. 50 g of the reduced sample with 3.0% CaO as additive was then subjected to melt separation in an electric furnace at temperature of 1 873 K under Ar atmosphere. In each run, SEM, EDS, optical microscopic examination and chemical analysis of the reduced ore sample, the metal sample and the slag sample were conducted. Results of all gas-based reduction experiments showed that iron metallization ratios were some 65% and the phosphorus compounds in the ore remained unchanged. It was agreed well with the simula- tions except for the iron metallization rate being less than predicted value; this difference was attributed to kinetics. Results of melt separation experiments showed that P content in metal samples is 0.33% （metal sample from H2 reduction product） and 0.27% （metal sample from CO reduction product）. The phosphorus partition ratios of both cases were less than predicted values. Some P in the metal samples existed as slag inclusion was considered to be the reason for this discrepancy.

关键词： HSC chemistry package coexistence theory slag structure high phosphorus iron ore gas-based reduction melt separation

Empirical likelihood for first-order mixed integer-valued autoregressive model

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Applied Mathematics(A Journal of Chinese Universities) 2018年第3期33卷 313-322页

作者： YANG Yan-qiu WANG De-hui zhao zhi-wen Department of Mathematics Jilin University Department of Mathematics Jilin Normal University

In this paper, we not only construct the confidence region for parameters in a mixed integer-valued autoregressive process using the empirical likelihood method, but also establish the empirical log-likelihood ratio statistic and obtain its limiting distribution. And then, via simulation studies we give coverage probabilities for the parameters of interest. The results show that the empirical likelihood method performs very well.

关键词： mixed integer-valued autoregressive model empirical likelihood asymptotic distribution confidence region

Effects of CaO on Precipitation Morphology of Metallic Iron in Reduction of Iron Oxides Under CO Atmosphere

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Journal of Iron and Steel Research International 2013年第7期20卷 16-24页

作者： zhao zhi-long TANG Hui-qing GUO Zhan-cheng State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Iron and Raw Material Handling Division MCC Capital Engineering and Research Incorporation

Growth process of iron whiskers and mechanism of CaO influence on precipitation morphology of metallic iron at the gas-solid interfaces was studied. Analytical reagents of Fe（NO3）3 and Ca（NO3）2 aqueous solution were used to prepare sheet film sample of Fe2 O3-CAO by thermal decomposition at high temperature. In-situ observation was con-ducted using a stereo optical microscope and a hot-stage. And reduction kinetics of samples was studied by thermo gravimetrie （TG） method. Some samples after reduction were analyzed by using the scanning electron microscope （SEM）, energy dispersive spectrometer （EDS） and fourier transform infrared （FT-IR） spectrometer. Results indi-cate that during the reduction of iron oxides with CO, metallic iron is mostly precipitated as whisker and the precipi- tation behavior mainly depends on reduction rate. Doping CaO can significantly increase the reduction rate and effec-tively change the precipitation morphology of metallic iron after the reduction. When CaO doping concentration is less than 4% （mass percent）, CaO can promote whisker formation of reduced iron; as it reaches 6% （mass per- cent）, CaO inhibits iron whiskers growth; as it is more than 8% （mass percent）, no whiskers could be observed. Therefore, controlling the quantity of Ca^2＋ is effective to control the formation and growth of iron whiskers during gaseous reduction and thus eliminating ore grain sticking caused by intertexture of iron whiskers.

关键词： stereo optical microscopes in-situ observations gaseous direct reductions iron whiskers sticking

Gasless laparoscopy for benign gynecological diseases using an abdominal wall-lifting system

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第11期10卷 805-812页

作者： Yue WANG Heng CUI Yan zhao zhi-qi WANG Department of Obstetrics and Gynecology Peking University People's Hospital Beijing 100044 China

Objectives: The use of gasless laparoscopy with an abdominal wall-lifting device for benign gynecological diseases was compared to conventional laparoscopy with CO2 pneumoperitoneum. Methods: From February 2007 to July 2007,76 women with uterine and/or adnexal benign diseases and candidates for laparoscopic surgery were recruited in this study. Thirty-two women underwent gasless laparoscopic surgery and 44 women underwent pneumoperitoneum laparoscopic surgery. Results: Diverse pathologies,including adnexal cyst,uterine myoma and ectopic pregnancy,were treated successfully with gasless laparoscopic surgery. Compared with the patients in the pneumoperitoneum group,the similar hospital stay (P=0.353) and intraoperative blood loss (P=0.157) were observed. However,the mean operative time in the gasless group was significantly longer than that in the pneumoperitoneum group (P=0.003). No severe intraoperative or postoperative complications were found in either group,except for one case of laparotomic conversion in the pneumoperitoneum group due to dense pelvic adhesions. The total hospital charges were significantly less in the gasless group than in the pneumoperitoneum group (P=0.001). In 38 cases of ovarian cyst resection,the mean operative time in the gasless group remained longer than that in the pneumoperitoneum group (P=0.017). The total hospital charges were also significantly less in the gasless group than in the pneumoperitoneum group (P<0.001). Conclusion: Our preliminary results demonstrated that the laparoscopic procedure using the gasless technique was a safe,effective method to treat benign gynecological diseases. Moreover,it was easy to master. As a minimally invasive treatment,gasless laparoscopic surgery provides a good choice to patients in the undeveloped regions in China without increasing the patients’ and the government’s burden significantly.

关键词： Gasless laparoscopy Pneumoperitoneum laparoscopy Ovarian cyst resection

Integrated mutual selection based code dissemination for reprogramming wireless sensor networks

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The Journal of China Universities of Posts and Telecommunications 2013年第1期20卷 79-84,114页

作者： zhao zhi-wei WANG Yong-gang BU Jia-jun College of Computer Science Zhejiang University

Code dissemination is an important building block of wireless reprogramming. We notice that current code dissemination protocols fails to consider page selection and energy balancing. In this paper, we present an integrated mutual selection based code dissemination protocol （MSD）. The key idea of MSD is mutual selection comprising sender selection and page selection. By exploiting link quality information in mutual selection, MSD enhances the propagation. Further, MSD takes energy level information in the sender selection, thus avoiding low power nodes＇ over-consumption. We simulate MSD by settings of Mica-Z motes. Simulation results show that MSD can reduce the completion time and average transmission, and help low power nodes avoid unnecessary transmission and energy consumption.

关键词： wireless sensor network code dissemination link quality energy balancing

Rapid determination of radon monitor＇s calibration factors

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Nuclear Science and Techniques 2016年第5期27卷 188-192页

作者： zhi-Qiang Li De-Tao Xiao Gui-zhi zhao Xi-Jun Wu Jian Shan Qing-zhi Zhou Zheng-Zhong He University of South China Hengyang 421001 China Hengyang Normal University Hengyang 421008 China

The monitors used to measure radon concentration must be calibrated,and the calibration factor of each measurement cycle should be ***,the determination time of calibration factors of NRL-Ⅱ radon monitors should be *** this study,a method is proposed to determine the calibration factors of radon monitors *** the proposed method,the calibration factor is initially determined in the 60-min measurement cycle;the calibration factor is then identified in the other measurement cycle on the basis of the principle that the calibration factor of the same radon monitor in different measurement cycles is inversely proportional to the number of a particles produced by ^(218)Po decay in this *** demonstrate that the calculated calibration factor of the different measurement cycles is consistent with the experimental calibration ***,this method is reliable and can be used to determine the calibration factor of radon monitors rapidly.

关键词：校准因子氡浓度监测仪快速测定测量周期监测器测定时间校正因子

Understanding the spatial interaction of ultrasounds based on three-dimensional dual-frequency ultrasonic field numerical simulation

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China Foundry 2024年第1期21卷 29-43页

作者： zhao-yang Yin Qi-chi Le Yan-chao Jiang Da-zhi zhao Qi-yu Liao Qi Zou Key Lab of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819China School of Materials Science and Engineering Northeastern UniversityShenyang 110819China

A transient 3D model was established to investigate the effect of spatial interaction of ultrasounds on the dual-frequency ultrasonic field in magnesium alloy *** effects of insertion depth and tip shape of the ultrasonic rods,input pressures and their ratio on the acoustic field distribution were discussed in ***,the spacing,angle,and insertion depth of two ultrasonic rods significantly affect the interaction between distinct *** a result,various acoustic pressure distributions and cavitation regions are *** spherical rods mitigate the longitudinal and transversal attenuation of acoustic pressure and expand the cavitation volume by 53.7%and 31.7%,respectively,compared to the plate and conical *** the input pressure will enlarge the cavitation region but has no effect on the acoustic pressure distribution *** acoustic pressure ratio significantly affects the pressure distribution and the cavitation region,and the best cavitation effect is obtained at the ratio of 2:1(P15:P20).

关键词： dual-frequency ultrasonic numerical model acoustic pressure spatial interaction magnesium alloy