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山西冶金 2024年第6期47卷 227-229,232页

作者：李东芳刘永锋臧俊权李朋广轧辊复合材料国家重点实验室河北邢台054025 中钢集团邢台机械轧辊有限公司河北邢台054025

支承辊打滑造成轧辊磨损和轧机停机,严重影响轧机的正常生产运行。为此主要从支承辊打滑影响因素结合油膜轴承承载相关参数进行了分析,并制定了预防打滑的措施和方案,取得了良好效果,为相关工作者提供参考借鉴。

关键词：支承辊打滑影响因素

DEVELOPMENT OF AN AUTOMATIC WEIGHING PLATFORM FOR MONITORING BODYWEIGHT OF BROILER CHICKENS IN COMMERCIAL PRODUCTION

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Frontiers of Agricultural Science and Engineering 2023年第3期10卷 363-373页

作者： Danni ZHOU Yi ZHOU pengguang HE Lin YU Jinming PAN Lilong CHAI Hongjian LIN College of Biosystems Engineering and Food Science Zhejiang UniversityHangzhou 310058China Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture Ministry of Agriculture and Rural AffairsHangzhou 310058China Key Laboratory of Intelligent Equipment and Robotics for Agriculture of Zhejiang Province Hangzhou 310058China Joint Research Center of Zhejiang University and Hefei Shenmu Information Science&Technology Company Hefei 230601China Department of Poultry Science University of GeorgiaAthensGA 30602USA

Bodyweight is a key indicator of broiler production as it measures the production efficiency and indicates the health of a ***,broiler weight(i.e.,bodyweight)is primarily weighed manually,which is timeconsuming and labor-intensive,and tends to create stress in *** study aimed to develop an automatic and stress-free weighing platform for monitoring the weight of floor-reared broiler chickens in commercial *** developed system consists of a weighing platform,a real-time communication terminal,computer software and a smart phone applet *** system collected weight data of chickens on the weighing platform at intervals of 6 s,followed by filtering of outliers and repeating *** performance and stability of this system was systematically evaluated under commercial production *** the adoption of data preprocessing protocol,the average error of the new automatic weighing system was only 10.3 g,with an average accuracy 99.5%with the standard deviation of 2.3%.Further regression analysis showed a strong agreement between estimated weight and the standard weight obtained by the established live-bird sales *** variance(an indicator of flock uniformity)of broiler weight estimated using automatic weighing platforms was in accordance with the standard *** weighing system demonstrated superior stability for different growth stages,rearing seasons,growth rate types(medium-and slow-growing chickens)and *** system is applicable for daily weight monitoring in floor-reared broiler houses to improve feeding management,growth monitoring and finishing day *** application in commercial farms would improve the sustainability of poultry industry.

关键词： automatic weighing weight monitoring floor housing uniformity precision poultry farming

Studies on Electronic Structure and Magnetic Properties of an Organic Magnet with Metallic Mn^2＋ and Cu^2＋ Ions

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Communications in Theoretical Physics 2004年第5X期42卷 798-800页

作者： YAOJian-Guo pengguang-Xiong DepartmentofBasicSciences HubeiAutomotiveIndustriesInstituteShiyan442002China InstituteofHighEnergyPhysics theChineseAcademyofSciencesBeijing100039China

The electronic structure and the magnetic properties of the non-pure organic ferromagnetic compound MnCu(pbaOH)(H2O)3 with pbaOH = 2-hydroxy-1, 3-propylenebis (oxamato) are studied by using the density-functional theory with local-spin-density approximation. The density of states, total energy, and the spin magnetic moment are calculated. The calculations reveal that the compound MnCu(pbaOH)(H20)3 has a stable metal-ferromagnetic ground state, and the spin magnetic moment per molecule is 2.208 μB, and the spin magnetic moment is mainly from Mn ion and Cu ion. An antiferromagnetic order is expected and the antiferromagnetic exchange interaction of d-electrons of Cu and Mn passes through the antiferromagnetic interaction between the adjacent C, O, and N atoms along the path linking the atoms Cu and Mn.

关键词：密度函数不纯有机磁铁电子结构铁磁体性质

Detection and analysis of anti-latent membrane protein 2A antibodies in the sera of patients with Epstein-Barr virus associated malignancies

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Chinese Medical Journal 2005年第9期118卷 725-730页

作者： chenYun YAOKun SUNHua QINGJian pengguang-yong DepartmentofMicrobiologyandImmunology NanjingMedicalUniversityNanjing210029China CollegeofEnglish HehaiUniversityNanjing210098China CenterforCellandGeneTherapy BaylorCollegeofMedicineHoustonTexas77054USA

Background Epstein-Barr virus (EBV) associated malignancies with a Type Ⅱ latency gene expression pattern, such as Hodgkin’s disease, and nasopharyngeal carcinoma (NPC), frequently express the EBV antigen latent membrane protein 2A (LMP2A). We expected to establish a highly expressing LMP2A yeast cell strain and get the high quality LMP2A protein, which was used for detection, analysis and characterization of its antibodies in various patients’ sera of EBV associated *** The plasmid pPICZαA-LMP2A containing the full length of LMP2A cDNA was constructed and transformed to Pichia pastoris GS115 to express LMP2A protein. After fermentation and purification, the LMP2A protein was used as an antigen to detect anti-LMP2A antibodies (Abs) in the sera of patients with EBV-associated malignancies in enzyme linked immunosorbent assay (ELISA) or *** LMP2A was expressed successfully with an expected molecular weight of approximately 54 kD and Abs to LMP2A were strikingly specific to NPC. Two-thirds or more sera from NPC patients were positive for anti-LMP2A immunoglobulin G (IgG) Abs. The antibodies were absent from the sera of other EBV-associated diseases except a small fraction of the gastric carcinoma. Comparing anti-viral capsid Ags (VCA) IgA and LMP2A IgA titers in the sera from 76 NPC patients, only 55% were positive for anti-LMP2A IgA Abs while 70% were positive for anti-VCA IgA. However, we found that 3 sera negative for VCA IgA were positive for LMP2A *** The results suggested the potential significance of LMP2A specific Abs for the diagnosis of EBV-associated malignancies, especially NPC.

关键词： latent membrane 2 pastoris nasopharyngeal cancer malignancies

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基于三帧差法与聚类算法的目标识别方法

信息技术与网络安全 2018年第3期37卷 57-60页

作者：梁琼蔡湧达路梅梅林诗颖陈鹏光熊建斌广东石油化工学院理学院广东茂名525000 广东石油化工学院计算机与电子信息学院广东茂名525000

针对三帧差法进行监控视频目标识别过程中出现目标缺失和背景冗余问题,提出了一种基于三帧差法与聚类算法相结合的运动目标识别方法。这种方法首先对两帧图像的像素进行"减"运算得到两帧图像中变化的像素值;然后确定像素的容许变化阈值... 详细信息

针对三帧差法进行监控视频目标识别过程中出现目标缺失和背景冗余问题,提出了一种基于三帧差法与聚类算法相结合的运动目标识别方法。这种方法首先对两帧图像的像素进行"减"运算得到两帧图像中变化的像素值;然后确定像素的容许变化阈值并对图片进行二值化处理;最后用网格将二值化图像分为若干区域,在区域内实现聚类,从而有效地将运动目标识别出来。通过实验表明,这种方法可以弥补识别过程中缺失的目标并滤除背景中冗余的亮点。

关键词：目标识别三帧差法聚类算法监控视频

Two-Stage Resource Allocation Scheme for Three-Tier Ultra-Dense Network

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China Communications 2017年第10期14卷 118-129页

作者： Junwei Huang pengguang Zhou Kai Luo Zhiming Yang Gongcheng He School of Communication and Information Engineering Chongqing University of Posts and Telecommunications Chongqing 400065 China

In 5 G Ultra-dense Network(UDN), resource allocation is an efficient method to manage inter-small-cell interference. In this paper, a two-stage resource allocation scheme is proposed to supervise interference and resource allocation while establishing a realistic scenario of three-tier heterogeneous network architecture. The scheme consists of two stages: in stage I, a two-level sub-channel allocation algorithm and a power control method based on the logarithmic function are applied to allocate resource for Macrocell and Picocells, guaranteeing the minimum system capacity by considering the power limitation and interference coordination; in stage II, an interference management approach based on K-means clustering is introduced to divide Femtocells into different clusters. Then, a prior sub-channel allocation algorithm is employed for Femtocells in diverse clusters to mitigate the interference and promote system performance. Simulation results show that the proposed scheme contributes to the enhancement of system throughput and spectrum efficiency while ensuring the system energy efficiency.

关键词：网络体系结构资源分配分配方案密集小区间干扰 k-均值聚类分配算法最小系统

功能化SBA-15介孔二氧化硅的制备及在药物递送系统中的应用进展

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材料导报 2022年第18期36卷 51-61页

作者：张文君吕江维陈威王鹏光哈尔滨商业大学药学院哈尔滨150076

介孔二氧化硅具有孔径均匀可调、孔容大、表面积大、表面容易功能化修饰、无毒、生物相容性好等优点,是一种理想的药物载体材料,可以用于构建药物递送系统(Drug delivery system,DDS),解决传统载体如脂质体、聚合物胶束等存在的稳定性... 详细信息

介孔二氧化硅具有孔径均匀可调、孔容大、表面积大、表面容易功能化修饰、无毒、生物相容性好等优点,是一种理想的药物载体材料,可以用于构建药物递送系统(Drug delivery system,DDS),解决传统载体如脂质体、聚合物胶束等存在的稳定性差、分散不均匀、药物过早降解和消除等问题。SBA-15是一种新型的二氧化硅介孔分子筛,以其较大的孔径、较厚的孔壁、高比表面积以及有序孔道等特征被广泛应用于DDS。SBA-15表面存在大量硅烷醇基,表面活性高,利用适当的官能团、金属离子或其他材料等对其孔口、孔道内外表面进行修饰,可以实现负载药物的可控释放、多功能智能化响应及抗癌药物的靶向治疗等多种功能,最大程度地发挥药物的治疗效果,有效降低药物的毒副作用,提高药物的生物利用度。近年来,经过功能化修饰的SBA-15在DDS中的应用主要体现在:(1)提高药物溶解度及溶出速率。选择合适的功能化试剂改变SBA-15表面性质,进而改变载体表面与药物分子之间的相互作用,增加药物的吸附量,从而改善难溶性药物的溶解度和溶出速率。(2)作为药物缓释载体。通过有机基团、金属或金属氧化物等的表面修饰,以增强药物与载体表面之间的作用力,延长药物的释放。(3)作为药物控释载体。通过构建配体修饰的靶向型DDS、内部或外部刺激响应型DDS实现药物的可控释放。除此以外,SBA-15在骨组织修复、基因治疗、医学成像、伤口敷料等生物医学工程方面也有广泛的应用。本文介绍了功能化SBA-15介孔二氧化硅的制备方法、类型、特点,归纳了其在DDS中的应用及最新研究进展,以期为功能化介孔二氧化硅载体的实际应用提供参考。

关键词： SBA-15 介孔二氧化硅功能化修饰药物递送系统

干酒糟及其可溶物对猪胴体品质和肉品质的影响

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动物营养学报 2022年第4期34卷 2097-2104页

作者：张鹏光张鑫邓磊尹靖东中国农业大学动物科学技术学院动物营养学国家重点实验室北京100193 屯昌天之虹生态农牧有限公司三亚570312

饲料资源的匮乏是养猪业一直以来面临的重要问题,干酒糟及其可溶物(DDGS)是生产乙醇的副产物,其作为一种重要的蛋白质饲料原料,逐渐在猪的饲料生产中受到重视。本文针对DDGS在猪不同生长阶段的添加量和添加效果进行了分析,并在此基础上,... 详细信息

饲料资源的匮乏是养猪业一直以来面临的重要问题,干酒糟及其可溶物(DDGS)是生产乙醇的副产物,其作为一种重要的蛋白质饲料原料,逐渐在猪的饲料生产中受到重视。本文针对DDGS在猪不同生长阶段的添加量和添加效果进行了分析,并在此基础上,从DDGS的营养价值特性、分类以及对猪胴体品质和肉品质的影响等方面进行了综述,并就如何优化DDGS的使用提出了建设性的建议,为DDGS在猪肉生产中的应用提供参考。

关键词： DDGS 营养价值猪胴体品质肉品质

The Treatment of Acne with the Addition and Subtraction of Loquat Qingfei Yin:A Meta-Analysis

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Journal of Clinical and Nursing Research 2021年第4期5卷 167-176页

作者： Wenjun Xue pengguang Xu Shannxi University of Traditional Chinese Medicine Xianyang 712046Shannxi ProvinceChina Affiliated Hospital of Shannxi University of Traditional Chinese Medicine Xianyang 712046Shannxi ProvinceChina

Objective:To systematically evaluate the efficacy and safety of Loquat Qingfei Yin(LQFY)in the treatment of ***:Using computer retrieval,comprehensive collection of the full text database of Chinese journals till December 2020(CNKI),Wanfang Data Knowledge Service Platform(Wanfang),Viper Database(VIP),PubMed,Cochrane Library,Medline were included in the LQFY addition or subtraction treatment of acne randomized controlled trial(RCT).Screening of the literatures included in the Note Express *** of the risk of bias in trials using Cochrane collaboration tools,and used Rev Man 5.3 to evaluate the curative ***:25 RCT,all in Chinese,there were 2257 *** the 1216 cases who were treated,control group was 1041 cases.A random effect model was used for Meta *** results showed that the effective rate of the treatment group was significantly higher than that of the control group,Differences were statistically significant(P=0.94,I2==0%),RR=2.87,CI[2.25,95 per cent 3.67],P<***:There are limited evidence that LQFY is safe and effective in treating ***,this conclusion needs to be confirmed by a more large-scale,multi-center,high-quality RCTs.

关键词： LQFY addition or subtraction Acne Randomized controlled trial(RCT) Meta analysis

多囊卵巢综合征患者肠道微生物群结构变化及其在代际效应中的作用机制研究进展

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新乡医学院学报 2023年第1期40卷 84-87页

作者：孙畅潘紫萌韩鹏光匡洪影黑龙江中医药大学研究生院黑龙江哈尔滨150040 黑龙江中医药大学附属第一医院妇科二科黑龙江哈尔滨150040

肠道微生物群与女性生殖、内分泌健康密切相关。宿主性激素水平可影响肠道微生物群的构成。多囊卵巢综合征(PCOS)是一种以性激素水平异常为主要病理特征的疾病,且存在代际效应,影响育龄期女性及其后代的健康。近年来,肠道微生物群对PCO... 详细信息

肠道微生物群与女性生殖、内分泌健康密切相关。宿主性激素水平可影响肠道微生物群的构成。多囊卵巢综合征(PCOS)是一种以性激素水平异常为主要病理特征的疾病,且存在代际效应,影响育龄期女性及其后代的健康。近年来,肠道微生物群对PCOS代际效应的影响受到广泛关注。基于此,本文就PCOS患者肠道微生物群结构变化及在代际效应中的作用机制进行综述。

关键词：多囊卵巢综合征肠道微生物群代际效应