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Journal of Mountain Science 2024年第6期21卷 2059-2074页

作者： ZHOU Jianwei FENG Bin WU Hua XU Tong CHEN Linna ZHAO Xinyong GUO Qiyun LI Jiatong ZHANG Chenguang zhu kangcheng KONG Yuzhong School of Ecology and Environment Tibet UniversityLhasa 850000China School of Engineering Tibet UniversityLhasa 850000China Joint Laboratory of Plateau Surface Remote Sensing Tibet UniversityLhasa 850000China

The Lhasa River Basin forms an essential human settlement area in the southern part of the Qinghai-Tibet *** study employed ecosystem service value(ESV)evaluation model,terrain gradient grading,and Geodetector to analyze land use and ESV in the Lhasa River Basin from 1985 to *** findings reveal that:(1)From 1985 to 2020,grassland was the dominant land *** was a trend of grassland reduction and the expansion of other land types.(2)ESV has increased over the research period(with a total increase of 0.84%),with higher values in the southeast and lower values in the *** contributed the most to ESV,and climate regulation and hydrological regulation were the ecosystem services that contribute the most to ESV.(3)Natural factors like NDVI and altitude,as well as economic factors like population density and distance from roads,influenced the spatial differentiation of ESV,the explanatory power of NDVI reached up to *** interaction between factors had a greater impact than individual *** research results can provide theoretical support for national spatial planning and ecological environment protection in the Lhasa River Basin and other similar areas.

关键词： Ecosystem services value Land use Terrain gradient effect Lhasa River Basin Driving factors

西藏雅砻河流域生态系统服务价值地形梯度分异及驱动因素

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水土保持研究 2025年第2期32卷 396-406页

作者：周建伟吴华许童陈琳娜孔玉忠赵鑫永郭齐韵李佳潼张泽林朱康成张晨光西藏大学生态环境学院拉萨850000 西藏大学高原地表环境遥感监测联合实验室拉萨850000 西藏大学工学院拉萨850000

[目的]分析雅砻河流域生态系统服务价值的变化,为流域生态文明建设提供科学依据。[方法]基于高精度土地利用数据,运用地形梯度分级、标准差椭圆和地理探测器,探究了近20年流域生态系统服务价值(Ecosystem service value,ESV)的时空演变... 详细信息

[目的]分析雅砻河流域生态系统服务价值的变化,为流域生态文明建设提供科学依据。[方法]基于高精度土地利用数据,运用地形梯度分级、标准差椭圆和地理探测器,探究了近20年流域生态系统服务价值(Ecosystem service value,ESV)的时空演变和地形梯度分异特征。[结果](1)草地是流域主要的土地利用类型,占比达92.45%。研究期内林地、灌木和草地面积有所减少,其他类型有所增加;(2)流域ESV在研究期间增长了0.13%(0.16亿元),ESV在空间上呈现出东南部高西北部低的特征。随着海拔、坡度和地形起伏度的抬升,ESV呈先增后降的分布规律,坡向梯度呈阴坡高于阳坡的特征。(3)流域ESV的标准差椭圆和重心在研究期内逐渐向西南方向移动,并趋于聚集。ESV的空间分异主要受自然和经济因子的影响,其中年均地温是主导因子(q=0.24),任意因子交互均增强了其分异性。[结论]依据雅砻河流域ESV的时空和地形分布特征,采取因地制宜的生态保护措施,促进流域生态环境的可持续发展。

关键词：生态系统服务价值地形梯度空间分异驱动因素雅砻河流域

Expression of estrogen receptor alpha,nerve growth factor,interleukin-2,and androgen receptor in the cerebellum of ovariectomized rats following soybean isoflavone treatment

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Neural Regeneration Research 2009年第12期4卷 965-972页

作者： Zhengli Chen Chunmei zhu Qihui Luo kangcheng Pan Anchun Cheng College of Veterinary Medicine Sichuan Agricultural University Ya'an 625014 Sichuan Province China Experimental Animal Engineering Center Sichuan Agricultural University Ya'an 625014 Sichuan Province China

BACKGROUND： Studies have shown that estrogen receptor alpha （ERα）, nerve growth factor （NGF）, interleukin-2 （IL-2）, and androgen receptor （AR） expression in the cerebellum decreases when estrogen levels decrease in vivo. Soybean isoflavone, a type of non-steroid estrogen with similar molecular structure and function to estradiol, exhibits estrogen-like characteristics. OBJECTIVE： To investigate the effects of various doses of soybean isoflavone on expression of ERa, NGF, IL-2, and AR in the cerebellum of ovariectomized rat, and to determine whether there is a dose-dependent ***, TIME AND SETTING： Controlled trial at the cellular and molecular level. The study was performed at the Experimental Animal Engineering Center, College of Veterinary Medicine, Sichuan Agricultural University from July 2006 to May 2008. MATERIALS： Soybean isoflavone, comprised of daidzin, genistein and isoflavone, was provided by Taiyuan Yuantai Biochemical Industry, China. The ERα, NGF, IL-2, and AR in situ hybridization kit, rabbit anti-rat ERa, NGF, IL-2, and AR monoclonal antibodies, and SABC kit were purchased from Wuhan Boster Biological Technology, China. METHODS： A total of 50 female, Sprague Dawley rats, aged 3 months, were randomly assigned to 5 groups, with 10 animals in each group. With the exception of the sham-operation group （abdominal cavity opening alone）, all rats underwent bilateral ovariectomy. At 14 days after surgery, rats in the high-, middle-, and low-dose soybean isoflavone groups were subcutaneously injected with 1.5, 1.0, and 0.5 mg/kg soybean isoflavone, respectively, every 2 days for 6 consecutive weeks. Rats in the sham-operation and ovariectomized groups were subcutaneously injected with absolute alcohol （0.5 mL/kg）. MAIN OUTCOME MEASURES： Expression levels and distribution of ERα, NGF, IL-2, and AR in the cerebellum were detected by immunohistochemistry and in situ hybridization. RESULTS： Compared with the sham-operation group, immunoreactive products

关键词： soybean isoflavone estrogen receptor alpha nerve growth factor interleukin-2 androgen receptor cerebellum

Study of transient luminescence of three kinds of Ru complexes bound to DNA

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Science China(Physics,Mechanics & Astronomy) 2008年第2期51卷 133-139页

作者： zhu WeiLing LIU XueWen WANG Hui YU HuiJuan LI AiZheng CHAO Hui ZHENG kangcheng JI LiangNian State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen UniversityGuangzhou 510275China College of Chemistry and Chemical Engineering Sun Yat-sen UniversityGuangzhou 510275China Department of Technical Physics Maoming CollegeMaoming 525000China

The transient luminescence of three kinds of ruthenium complexes [Ru(bpy)2(7-CH3-dppz)]2+, [Ru(bpy)2(7-F-dppz)]2+ and [Ru(phen)2(7-F-dppz)]2+ bound to calf thy-mus DNA (ctDNA) has been studied by using the time-resolved spectroscopy. The results show that the luminescence is due to the radiative decay from the charge-transfer states to the ground state. By the interaction with DNA, the radia-tiveless rate of the photoexcited Ru complex molecules decreases, which results in the increase of luminescence lifetime and efficiency. The structure of the Ru com-plex has an important impact on the interaction with DNA. The [Ru(bpy)2(7-CH3-dppz)]2+ shows the longest luminescence lifetime (about 382 ns), while the [Ru(bpy)2(7-F-dppz)]2+ shows the shortest lifetime (about 65 ns). The possible origin of the luminescence dynamics is discussed.

关键词： ultrafast photoelectronics transient luminescence DNA and Ru complex ultrafast spectroscopic technology

Characterization of the cellulolytic bacteria communities along the gastrointestinal tract of Chinese Mongolian sheep by using PCR-DGGE and real-time PCR analysis

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Characterization of the cellulolytic bacteria communities al...

Bacillus licheniformis normalize the ileum microbiota of chickens infected with necrotic enteritis

中国畜牧兽医学会动物微生态学分会第五届第十二次全国学术研讨会

作者： Yan Zeng Dong Zeng Yan Zhang Xueqin Ni Yurui Tang Hui zhu Hesong Wang Zhongqiong Yin kangcheng Pan Bo Jing Animal Microecology Institute College of Veterinary MedicineSichuan Agricultural University Key Laboratory of Animal Disease and Human Health of Sichuan Province

A balanced gastrointestinal microbial ecosystem is crucial for the health and growth of *** the gastrointestinal tract(GIT) of ruminants,cellulolytic bacteria aid in the digestion and absorption of *** contents and feces in ruminants are often used to assess gastrointestinal microbial communities;however,these sites do not guarantee to represent the diversity of microbes found in the entire *** this study,we investigated the microbiota along the GIT of five Chinese Mongolian sheep using PCR-denaturing gradient gel electrophoresis(DGGE) and real-time PCR *** indicated that microbiota were more abundant in the stomach and large intestine than in the small *** and real-time PCR revealed the predominance of Firmicutes and Bacteroidetes in the ***,Ruminococcus flavefaciens and Clostridium cluster Ⅳ showed significant difference in their abundance along the GIT(P<0.05).Fibrobacter succinogenes was the most dominant species,followed by Ruminococcus albus and *** ileum harbored a larger number of cellulolytic bacteria,particlarly-Clostridium cluster Ⅳ,than reported *** addition,comparisons between microbiota in the rumen and rectum indicated similar number of total bacteria,Firmicutes,Bacteroidetes,***,Butyrivibrio fibrisolvens,Clostridium cluster Ⅳ,and Clostridium cluster ⅩⅣa,whereas the number of *** and *** was higher in the *** study investigated the composition and quantification of GIT microbial community in Chinese Mongolian sheep,and revealed for the first time the cellulolytic bacterial community in these sheep.

关键词： Chinese Mongolian sheep gastrointestinal tract cellulolytic bacteria PCR-DGGE real-time PCR

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Bacillus licheniformis normalize the ileum microbiota of chi...

带-NH2的嘧啶环对钌配合物与DNA相互作用的瞬态发光特性的影响

中国畜牧兽医学会动物微生态学分会第五届第十三次全国学术研讨会

作者： Shuai Xu Yicen Lin Dong Zeng Mengjia Zhou Yan Zeng Hesong Wang Yi Zhou Hui zhu kangcheng Pan Bo Jing Xueqin Ni Animal Microecology Institute College of Veterinary MedicineSichuan Agricultural University Key Laboratory of Animal Disease and Human Health of Sichuan Province Sichuan Agricultural University

Necrotic enteritis(NE) is a severe intestinal disease,which can change gut microbiota and result in a high cost for the poultry industry ***,little is known regarding how the gut microbiota of NE chicken ileum are changed by Bacillus *** study was conducted to investigate how ileum microbiota structure was changed by *** in broiler chickens challenged with Clostridium perfringens-induced NE through Illumina MiSeq *** broilers were randomly separated into four groups:the negative control group(NC),the positive control group(PC),the fishmeal and coccidia group(FC),and the PC group supplied with feed containing ***(BL).Compared to the PC and FC,alpha diversity,beta diversity,and the bacterial taxa of the ileum microbiota were more similar in BL and *** genera,which were related to the NE control,became insignificant in BL with NC,such as Lactobacillus,Lactococcus,Bacteroides,Ruminococcus and *** PICRUSt analysis revealed that a tumour suppressor gene,p53,which was negatively correlated with Helicobacter,was enriched in the BL *** findings showed that the ileum microbiota disorder caused by NE in chickens was normalized by dietary *** supplementation.

关键词： Bacillus licheniformis Broiler chickens Necrotic enteritis Illumina MiSeq sequencing Ileum Microbiota

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光学学报 2008年第6期28卷 1155-1160页

作者：朱伟玲刘学文王惠于会娟巢晖郑康成计亮年茂名学院物理系广东茂名525000 湖南文理学院化学化工系湖南常德415000 中山大学光电材料与技术国家重点实验室广东广州510275 中山大学化学与化学工程学院广东广州510275

采用时间分辨的发光光谱技术,分别测量了两种新合成的钌配合物[Ru(bpy)2(dpbpd(NH2)2)]2+和[Ru(phen)2(dpbpd(NH2)2)]2+与小牛胸腺脱氧核糖核酸(ctDNA)相互作用时的瞬态发光动力学过程,并与以往对[Ru(phen)2dppz]2+等的研究结果进行对比... 详细信息

采用时间分辨的发光光谱技术,分别测量了两种新合成的钌配合物[Ru(bpy)2(dpbpd(NH2)2)]2+和[Ru(phen)2(dpbpd(NH2)2)]2+与小牛胸腺脱氧核糖核酸(ctDNA)相互作用时的瞬态发光动力学过程,并与以往对[Ru(phen)2dppz]2+等的研究结果进行对比,从而研究带-NH2的嘧啶环对配合物与DNA作用动力学过程的影响。结果表明:这两种含有带-NH2的嘧啶环的钌配合物与DNA相互作用时的发光按双指数规律衰减,发光寿命为几十纳秒,比dppz类钌配合物与DNA作用时的发光衰变寿命(几百纳秒)小一个数量级。归因于嘧啶环上的N和-NH2可能与水分子、DNA的碱基对或磷酸骨架形成氢键,从而加快激发态的无辐射弛豫,削弱发射光强,缩短发光寿命。该结论为进一步研究配合物分子与DNA的相互作用的机理提供了一定的依据。

关键词：超快激光与光电子学瞬态发光时间分辨光谱术钌配合物 DNA

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基于相机阵列的叠层纸张数量检测

计算机工程与应用 2015年第13期51卷 168-171页

作者：陈飞朱海斌贾康成肖昌炎第二炮兵工程大学理学院机械室西安710025 湖南大学电气与信息工程学院长沙410082

在印刷和包装领域中,类似纸板数量检测的质检是一个重要的环节,其中机器视觉方法凭借无物理接触和实时性等优点得到了广泛的应用。由于传统的单相机成像方法无法获取一个超高叠层的清晰图像,设计了一套使用相机阵列组成的成像装置和高... 详细信息

在印刷和包装领域中,类似纸板数量检测的质检是一个重要的环节,其中机器视觉方法凭借无物理接触和实时性等优点得到了广泛的应用。由于传统的单相机成像方法无法获取一个超高叠层的清晰图像,设计了一套使用相机阵列组成的成像装置和高性能的计数方法。详细叙述了成像系统的具体结构,着重介绍了基于Canny边缘检测和Hough直线检测实现计数的图像处理方法,更重要的是设计了一种融合相机阵列计数结果的方法,以得到一个精确的烟标数目。通过在生产车间近一年的测试表明,该设备误差小于6?,完全能够满足精度、实时性的要求。

关键词：机器视觉烟标数量检测 Canny边缘检测算子 Hough变换

Fermented Yupingfeng Polysaccharides Enhance Immunity by Improving the Foregut Microflora and Intestinal Barrier in Weaning Rex Rabbits

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Fermented Yupingfeng Polysaccharides Enhance Immunity by Imp...

基于多目标粒子群算法的城市战无人机集群通信中无人机位置部署与轨迹联合优化研究

中国畜牧兽医学会动物微生态学分会第五届第十二次全国学术研讨会

作者： Hao Sun Xueqin Ni Xu Song Bin Wen Yi Zhou Fuqin Zou Mingyue Yang Zhirong Peng Hui zhu Yan Zeng Hesong Wang Xiangchao Fu Yunduo Shi Zhongqiong Yin kangcheng Pan Bo Jing Dong Zeng Ping Wang Animal Microecology Institute College of Veterinary MedicineSichuan Agricultural University Key Laboratory of Animal Disease and Human Health of Sichuan Province Sichuan Academy of Grassland Science Sichuan Fishery School

Yupingfeng(YPF) is a kind of Astragali Radix-based ancient Chinese herbal supplemented with Atractylodis Macrocephalae Rhizoma and Radix *** evidence has proven the beneficial immunomodulating activity of ***,the action mechanism(s) of it is not ***,we explored the immunomodulatory activity of unfermented Yupingfeng polysaccharides(UYP) and fermented Yupingfeng polysaccharides(FYP) obtained using Rhizopus oligosporus SH in weaning rex *** results showed that both UYP and FYP exhibited notable growth-promoting and immune-enhancing activities,improvement of the intestinal flora homeostasis and maintenance of intestinal barrier integrity and ***,compared with UYP,FYP effectively enhanced average daily gain,organ indices,IL-2,IL-4,IL-10,TNF-α,TLR2 and TLR4 mRNA levels in spleen,IL-1,IL-2,IL-4,IL-6,IL-10,IL-12,TNF-a and IFN-γ protein concentrations in serum and TLR2 and TLR4 mRNA expressions in gastrointestinal tract(GIT).Moreover,FYP exhibited greater beneficial effects in improving the intestinal flora,including augment flora diversity and the abundance of cellulolytic bacteria,reduction the abundance of Streptococcus *** Enterococcus *** GIT,particularly foregut and maintaining the intestinal barrier integrity and functionality by upregulating zonula occludens 1,claudin,polymeric immunoglobulin receptor,trefoil factor and epidermal growth factor mRNA levels in jejunum and *** results indicated the immunoenhancement effect of FYP is superior over that of UYP,which is probably related with the amelioration of the intestinal microflora and intestinal barrier in foregut.

关键词： Yupingfeng polysaccharide Rhizopus oligosporus SH Immunity Intestinal microflora Intestinal barrier Toll-like receptors

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智能安全

智能安全 2023年第3期2卷 11-19页

作者：朱义勇丁迎星梁亢骋国防科技大学信息通信学院武汉430010 91851部队葫芦岛125000 92886部队青岛266000

随着人类社会的发展,城市战已成为未来战争的重要样式之一.为城市战中的作战分队、作战要素、作战平台提供泛在互联、顽存抗扰的通信覆盖,是打赢城市战的关键因素之一.城市战的特殊环境使传统通信手段的通信距离、通信效果严重受限,目... 详细信息

随着人类社会的发展,城市战已成为未来战争的重要样式之一.为城市战中的作战分队、作战要素、作战平台提供泛在互联、顽存抗扰的通信覆盖,是打赢城市战的关键因素之一.城市战的特殊环境使传统通信手段的通信距离、通信效果严重受限,目前世界各军事强国高度重视基于无人机集群的通信覆盖.首先建立了城市战环境的通信信道模型,其次以提高通信覆盖率和信号质量为目标,以无人机集群部署数量和功率为约束条件,基于多目标粒子群算法研究了无人机集群的部署位置和轨迹,以期为未来城市战中的无人机集群通信提供参考借鉴.

关键词：城市战无人机集群通信粒子群算法