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Chemical composition of walnuts from three regions in China

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Oil Crop Science 2023年第1期8卷 56-60页

作者： Min Liu Xueyan Wang Yu Zhang Lin Xu Yan Liu Li Yu Fei Ma Xuefang Wang zhiyong gong Liangxiao Zhang Peiwu Li Key Laboratory for Deep Processing of Major Grain and Oil of Ministry of Education Wuhan Polytechnic UniversityWuhan430023China Key Laboratory of Biology and Genetic Improvement of Oil Crops Ministry of Agriculture and Rural AffairsLaboratory of Risk Assessment for Oilseed Products(Wuhan)Quality Inspection and Test Center for Oilseed ProductsOil Crops Research InstituteChinese Academy of Agricultural SciencesWuhan430062China Hubei Hongshan Laboratory Wuhan430070China Xianghu Laboratory Hangzhou311231China

To reveal the characteristic chemicals of walnuts from different origins, we analyzed fatty acid composition,tocopherols, phytosterols and total phenolic content (TPC) of walnuts from three main producing regions inChina. The results showed that walnuts were rich in polyunsaturated fatty acids, and the ratio of ω-6 to ω-3 fattyacids was close to the recommendation of Chinese Nutrition Society. Moreover, walnuts contain high contents oftocopherols (331.20–414.71 mg/kg), phytosterols (97.17–110.35 mg/100 g) and phenols (38.51–48.08 mg GAE/kg). Significant chemical differences exist among walnuts from three production regions. The highest content ofpolyunsaturated fatty acids was found in walnuts from the northern China, the highest content of tocopherols inwalnuts from southwest China, and the highest contents of phytosterol and TPC in walnuts from northwest ***, there was no significant difference in the tocopherol, phytosterol and TPC content of walnuts betweenthe Northern China and Northwest China. The above results provide important references for manufacturers andconsumers to select suitable walnut scientifically and reasonably.

关键词： Walnut Fatty acid Phytosterols Tocopherols Total phenol content Producing regions

食品中高氯酸盐的污染现状及毒理作用研究进展

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食品科学 2020年第5期41卷 276-281页

作者：田一媚宫智勇武汉轻工大学大宗粮油精深加工教育部重点实验室湖北武汉430023

高氯酸盐是一种持久性的污染物,广泛存在于食品中,能竞争性地抑制碘摄取,从而损害甲状腺功能,影响婴幼儿的生长发育。机体主要通过不同食品基质摄取高氯酸盐,因而研究不同食品中高氯酸盐在机体中的代谢具有重要意义。本文简要综述了食... 详细信息

高氯酸盐是一种持久性的污染物,广泛存在于食品中,能竞争性地抑制碘摄取,从而损害甲状腺功能,影响婴幼儿的生长发育。机体主要通过不同食品基质摄取高氯酸盐,因而研究不同食品中高氯酸盐在机体中的代谢具有重要意义。本文简要综述了食品中高氯酸盐的暴露状况、毒性作用的研究现状。

关键词：高氯酸盐暴露毒性食品

Patterns of alteration in boar semen quality from 9 to 37 months old and improvement by protocatechuic acid

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Journal of Animal Science and Biotechnology 2024年第5期15卷 1881-1893页

作者： Ruizhi Hu Xizi Yang Jiatai gong Jing Lv Xupeng Yuan Mingkun Shi Chenxing Fu Bie Tan zhiyong Fan Liang Chen Hongfu Zhang Jianhua He Shusong Wu Hunan Collaborative Innovation Center for Utilization of Botanical Functional Ingredients College of Animal Science and TechnologyHunan Agricultural UniversityChangsha 410128China College of Animal Science and Technology Hunan Biological and Electromechanical PolytechnicChangsha 410127China State Key Laboratory of Animal Nutrition Institute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Background Comprehending the patterns of alteration in boar semen quality and identifying effective nutritional interventions are crucial for enhancing the productivity of commercial pig *** study aimed to examine the alteration in semen quality in boars,and assess the impact of protocatechuic acid(PCA)on semen quality during the phase of declining semen *** In Exp.1,a total of 38 Pig Improvement Company(PIC)boars were selected and their semen quality data were recorded from the age of 9 to 37 *** Exp.2,18 PIC boars(28 months old)were randomly assigned into three groups(n=6)and fed a basal diet,a basal diet containing 500 or 1,000 mg/kg PCA,*** experiment lasted for 12 *** The semen volume,concentration,and total number of spermatozoa in boars exhibited an increase from 9 to 19 months old and showed a significant linear decreased trend in 28,24,and 22 months *** motility displayed an upward trajectory,reaching its peak at 20 months of age,and showed a significant linear decreased trend at 20 months *** supplementation of PCA demonstrated an effect to mitigate the decrease in semen volume,concentration of spermatozoa,total number of spermatozoa(P>0.05),and significantly increased the sperm motility(P<0.05).Moreover,supplementation of 1,000 mg/kg PCA significantly increased the sperm viability(P<0.05).Analysis on cellular signaling pathways revealed that PCA restored serum testosterone levels and alleviated oxidative damage by upregulating the expression of HO-1,SOD2,and NQO1 in testicular stromal ***,PCA can enhance phosphorylation by selectively binding to AMP-activated protein kinase(AMPK)protein,thereby improving sperm mitochondrial function and augmenting sperm motility via PGC-1/*** These data elucidated the pattern of semen quality variation in boars within the age range of 9 to 37 months old,and PCA has the potential to be a natural antioxidant to enhance sperm quality throu

关键词： Antioxidants Boars Protocatechuic acid Semen quality Signaling pathway

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多干扰机反向交叉眼干扰分析

系统工程与电子技术 2017年第7期39卷 1457-1463页

作者：王彩云何志勇宫俊南京航空航天大学航天学院江苏南京210016

反向交叉眼干扰是近年来受到广泛关注的一种单脉冲角度欺骗干扰技术,为丰富反向交叉眼干扰理论,对多干扰机场景下的反向交叉眼干扰技术进行了分析。在分析过程中,通过严格地推导,研究了反向交叉眼干扰性能与反向交叉眼增益的关系;在此... 详细信息

反向交叉眼干扰是近年来受到广泛关注的一种单脉冲角度欺骗干扰技术,为丰富反向交叉眼干扰理论,对多干扰机场景下的反向交叉眼干扰技术进行了分析。在分析过程中,通过严格地推导,研究了反向交叉眼干扰性能与反向交叉眼增益的关系;在此基础上,研究了多干扰机协同干扰时,干扰机对间存在的相对幅相差以及目标回波对反向交叉眼增益的影响,进而分析了上述干扰因素对反向交叉眼干扰性能的影响。仿真结果表明,干扰机对间的相对幅相差变小、目标回波相对干扰信号的相对幅度变小时,反向交叉眼增益增强,反向交叉眼干扰效果增强。

关键词：反向交叉眼干扰反向交叉眼增益多干扰机相对幅相差目标回波

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基于压缩感知的单脉冲雷达欺骗干扰机研究

北京航空航天大学学报 2017年第9期43卷 1789-1797页

作者：王彩云何志勇宫俊南京航空航天大学航天学院南京210016

欺骗干扰是一种常用的雷达干扰技术,提出了一种对抗单脉冲雷达的欺骗干扰机设计新方法。在分析欺骗干扰信号特性基础上,基于压缩感知(CS)框架和数字射频存储(DRFM)技术,根据线性调频(LFM)信号在分数阶傅里叶域的能量聚集特性,设计了压... 详细信息

欺骗干扰是一种常用的雷达干扰技术,提出了一种对抗单脉冲雷达的欺骗干扰机设计新方法。在分析欺骗干扰信号特性基础上,基于压缩感知(CS)框架和数字射频存储(DRFM)技术,根据线性调频(LFM)信号在分数阶傅里叶域的能量聚集特性,设计了压缩感知框架下的DRFM以产生角度欺骗干扰信号;通过控制干扰信号强度产生角度拖引和闪烁干扰以实现对单脉冲雷达角度跟踪的有效干扰。仿真实验结果表明,干扰机能够产生良好的角度欺骗干扰信号,通过干扰信号强度控制能够产生稳定的角度拖引和闪烁干扰。

关键词：欺骗干扰分数阶傅里叶变换数字射频存储(DRFM) 压缩感知(CS) 角度干扰

Aireborne nanoscale particulate matter promotes thrombus formation based on a human 3D microvascular model on a microfluidic chip

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Aireborne nanoscale particulate matter promotes thrombus for...

第十次全国分析毒理学大会暨第六届分析毒理专业委员会会议

作者： Yan Li Pengcheng Wang Yan Liu Luyang Wang Michael Mak Yang Wu zhiyong gong College of Food Science and Engineering Wuhan Polytechnic University Department of Building Science Tsinghua University Department of Biomedical Engineering School of Engineering & Applied ScienceYale University

Background A growing body of evidence shows that indoor concentrations of airborne particles are often higher than is typically encountered *** exposure to indoor PM2.5 is thought to be associated with cardiovascular disease,the health impacts of indoor air pollution need to be *** on animal models,ambient particulate matter has been proved to promote coagulation which is very likely involved in the pathogenic development of cardiovascular ***,animal models are insufficient to predict what will happen with any certainty in *** this reason,the precise pathogenic mechanisms behind the development of cardiovascular disease in humans have not yet been *** We generated a 3D functional human microvascular network in a microfluidic device(Figure 1).The established model enables human vascular endothelial cells to form tissue-like microvessels that behave very similarly to human blood vessels .The perfusable microvasculature allows the delivery of particles introduced into these generated human-like microvessels to follow the fluid *** exposure path effectively simulates the dynamic movement of airborne nanoscale particles(ANPs)within human *** this study,we first identified the existence of ANPs in indoor air *** then showed that ANPs could activate endothelial cells via ROS induced inflammation,and further resulted in abnormal expression of the coagulation factors(TF,TM and t-PA) involved in coagulation *** addition,we found that ANPs could be covered by a protein,and that this biointeraction could interfere with *** organotypic 3D microvessel models provide a bridge for how research outcomes can translate to *** The 3D human microvessel model was used to determine the the physiological responses of human vessels to ANP *** on the obtained data,we concluded that ANPs not only disrupts normal coagulation functions,but can also act directly on anticoa

关键词： PM2.5 oxidative stress inflammation promote coagulation 3D human microvessel

来源： cnki会议评论

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可控放电避雷针与传统避雷针保护性能的区别

水电与新能源 2010年第3期24卷 9-12页

作者：龚志勇四川省乐山电业局线路工程处四川乐山614000

对传统避雷针和可控放电避雷针的性能比较分析证明,可控放电避雷针的防雷保护性能更优异,它能够提前放电将雷击瞬间放电过程延长,并可将下行雷闪转化为幅值低、陡度小的上行雷闪,有效减少感应过电压等其他次生危害。

关键词：防雷保护避雷针可控放电上行雷闪

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利用“镜像法原理”估算矿坑涌水量

资源环境与工程 2017年第1期31卷 56-59页

作者：龚志勇湖北非金属地质公司湖北武汉430030

矿坑涌水量预测是矿床水文地质调查的核心任务,也是一项复杂工作。"镜像法原理"利用虚井把有界含水层的解和无界含水层的解联系起来,后者有现成的解析解,从而使有界含水层的求解就比较容易了。该方法在阳新县银山铅锌矿深部详查中的应用... 详细信息

矿坑涌水量预测是矿床水文地质调查的核心任务,也是一项复杂工作。"镜像法原理"利用虚井把有界含水层的解和无界含水层的解联系起来,后者有现成的解析解,从而使有界含水层的求解就比较容易了。该方法在阳新县银山铅锌矿深部详查中的应用,证明是可行和实用的。

关键词：矿坑涌水量镜像法隔水边界铅锌矿

Optofluidic identification of single microorganisms using fiber-optical-tweezer-based Raman spectroscopy with artificial neural network

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BMEMat(BioMedical Engineering Materials) 2023年第1期1卷 70-79页

作者： Chenghong Lin Xiaofeng Li Tianli Wu Jiaqi Xu zhiyong gong Taiheng Chen Baojun Li Yuchao Li Jinghui Guo Yao Zhang Institute of Nanophotonics Jinan UniversityGuangzhouChina Department of Clinical Medical Laboratory Peking University Shenzhen HospitalShenzhenChina Department of Physiology School of MedicineJinan UniversityGuangzhouChina Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes Jinan UniversityGuangzhouChina

Rapid and accurate detection of microorganisms is critical to clinical *** Raman spectroscopy promises label-free and culture-free detection of biomedical objects,it holds the potential to rapidly identify microorganisms in a single *** stabilize the microorganism for spectrum collection and to increase the accuracy of real-time identification,we propose an optofluidic method for single microorganism detection in microfluidics using optical-tweezing-based Raman spectroscopy with artificial neural network.A fiber optical tweezer was incorporated into a microfluidic channel to generate op-tical forces that trap different species of microorganisms at the tip of the tweezer and their Raman spectra were simultaneously *** artificial neural network was designed and employed to classify the Raman spectra of the microorganisms,and the identification accuracy reached 94.93%.This study provides a promising strategy for rapid and accurate diagnosis of mi-crobial infection on a lab-on-a-chip platform.

关键词： artificial neural network fiber optical tweezers microorganisms Raman spectroscopy single-cell identification