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Feeding habitats of blue sheep(Pseudois nayaur)during winter and spring in Helan Mountains,China

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Frontiers in Biology 2007年第1期2卷 100-107页

作者： liu zhensheng WANG Xiaoming LI Zhigang CUI Duoying LI Xinqing School of Life Science East China Normal UniversityShanghai 200062China College of Wildlife Resources Northeast Forestry UniversityHarbin 150040China Helan Mountain National Nature Reserve Yinchuan 750021China

The feeding habitat selection of blue sheep(Pseudois nayaur)was studied by direct observation method in the Helan Mountains,China during winter(from Novembe r to December)and spring(from April to June)from 2003 to *** established 25 line transects to collect information on feeding habitats used by blue *** sheep in the study area preferred mountain savanna forests,a habitat dominated by Ulmus glaucescens,with medium tree density(5 individuals/100 m^(2)),higher shrub(>1.3 m),higher food abundance(>50 g),moderate distance to human disturbance(100 g),moderate altitude(<2000 m),moderate distance to water resource(<500 m),and medium hiding cover(50%-75%)during *** of the feeding habitats by sheep showed a significant difference in vegetation type,landform feature,dominant tree,tree height,shrub density,distance to the nearest shrub,food abundance,slope direc-tion,slope degree,distance to water resource,and hiding cover between winter and *** of principal com-ponents analysis indicated that the first principal component accounted for 24.493%of the total variance among feeding habitat variance during winter,with higher loadings for vegetation type,dominant tree,tree height,distance to the nearest tree,shrub density,shrub height,altitude,distance to water resource,and distance to human *** spring,the first principal componen

关键词： blue sheep Pseudois nayaur habitat selection principal components analysis Helan Mountains

Seasonal dynamics and grazing rate of zooplankton in Yueqing Bay,China

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Frontiers in Biology 2006年第4期1卷 434-442页

作者： liu zhensheng WANG Chunsheng ZHANG Zhinan CAI Yuming ZHANG Dongsheng College of Marine Life Science Ocean University of ChinaQingdao 266003China Second Institute of Oceanography State Oceanic AdministrationHangzhou 310012China Key Lab of Submarine Geosciences State Oceanic AdministrationHangzhou 310012China

The species composition,biomass,abundance,and species diversity of zooplankton were determined for samples collected from August 2002 to May 2003 from 14 stations in Yueqing Bay,*** growth rate and microzooplankton grazing rate were obtained by using the dilution method developed by Landry and *** spatial and temporal variations of zooplankton and its relationship with environmental factors were also *** results showed that the zooplankton in the Yueqing Bay could be divided into four ecotypes,namely coastal low saline species,estuary brackish water species,offshore warm water species,and eurytopic species.A total of 75 species of zooplankton belonging to 56 genera and 17 groups of pelagic larva were identified in the Yueqing *** coastal low saline species was the dominant ecotype in the study area,and the dominant species were Labidocera euchaeta,Acartia pacifica,Acrocalanus gibber,Pseudeuphausia sinica,and Sagitta bedoti among *** was considerable seasonal variation in zooplankton biomass and abundance in the surveyed *** peak biomass appeared in August,descending in November and in May,and the lowest biomass appeared in ***,the highest abundance of zooplankton was observed in August,with the abundance descending in the following months:May,November,and *** were similar horizontal distribution patterns for the biomass and the abundance of *** both increased from the upper to the lower bay in February and May,but decreased from the upper to the lower bay in *** and abundance were evenly distributed in the Yueqing Bay in ***,there was marked seasonal variation in the species diversity of zooplankton,which conformed to the abundance of *** of the dilution experiments indicated that there was grazing pressure of microzooplankton on phytoplankton in the Yueqing Bay throughout the year though the rate of microzooplankton grazing on phytopla

关键词： zooplankton biomass abundance grazing rate Yueqing Bay China

弥散加权成像相对信号强度预测血管内治疗后血管成功再通的心源性栓塞性卒中患者的转归

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国际脑血管病杂志 2024年第5期32卷 321-325页

作者：何峰王英歌张浩铭刘振生刘振唐铁钰扬州大学附属医院神经内科扬州225001 扬州大学附属医院介入科扬州225001

目的探讨弥散加权成像(diffusion-weighted imaging,DWI)相对信号强度(relative DWI signal intensity,DWI-rSI)对血管内机械血栓切除术(endovascular therapy,EVT)后血管成功再通的心源性栓塞所致前循环大血管闭塞性卒中患者转归的预测作用。方法回顾性纳入2017年3月至2023年3月在扬州大学附属医院接受EVT后血管成功再通的心源性栓塞所致前循环大血管闭塞性卒中患者。根据术后3个月改良Rankin量表评分分为转归良好组(0~2分)和转归不良组(3~6分)。应用多变量logistic回归分析确定转归不良的独立预测因素。结果共纳入59例患者,男性29例(49.2%),中位年龄74岁(四分位数间距:68~80岁);中位基线美国国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NIHSS)评分15分(12~21分),中位DWI-阿尔伯塔卒中项目早期CT评分(Alberta Stroke Program Early CT Score,ASPECTS)8分(5~9分)。32例(54.2%)转归良好,27例(45.8%)转归不良,其中9例(15.3%)患者死亡(6例死于恶性脑水肿后脑疝形成,2例死于并发症,1例死于术后颅内严重出血)。21例(35.6%)发生出血性转化,包括12例(20.3%)有症状颅内出血。转归良好组基线收缩压、NIHSS评分、DWI-ASPECTS、DWI-rSI以及有症状颅内出血发生率与转归不良组差异有统计学意义(P均<0.05)。多变量logistic回归分析显示,基线收缩压(优势比0.977,95%置信区间0.919~0.991;P=0.015)和DWI-rSI(优势比11.809,95%置信区间1.932~72.170;P=0.008)为转归不良的独立预测因素。结论DWI-rSI可预测EVT后血管成功再通的心源性栓塞所致前循环大血管闭塞性卒中患者的转归。

关键词：缺血性卒中栓塞性卒中弥散磁共振成像血管内手术血栓切除术再灌注治疗结果

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贺兰山岩羊活动节律与家域特征

野生动物学报 2024年第3期45卷 480-489页

作者：崔爽胡天华余梦琦梁咏亮李岳诚郭松涛刘振生东北林业大学野生动物与自然保护地学院哈尔滨150040 宁夏贺兰山国家级自然保护区管理局银川750021 宁夏回族自治区森林病虫防治检疫总站银川750021 西北大学生命科学学院西安710069 国家林业和草原局野生动物保护学重点开放实验室哈尔滨150040

野生动物的活动节律和家域特征是其为适应内外环境变化而形成的生存模式,研究活动节律和家域特征有助于深入了解野生动物生态适应性,维护生态平衡,并有助于制定科学保护策略。因此,基于北斗卫星追踪项圈监测技术,深入研究了贺兰山岩羊(P... 详细信息

野生动物的活动节律和家域特征是其为适应内外环境变化而形成的生存模式,研究活动节律和家域特征有助于深入了解野生动物生态适应性,维护生态平衡,并有助于制定科学保护策略。因此,基于北斗卫星追踪项圈监测技术,深入研究了贺兰山岩羊(Pseudois nayaur)全年的活动节律和家域特征,以及不同季节、性别的个体差异。研究表明:(1)岩羊属于晨昏性动物(06:00—10:00、16:00—20:00),4个季节均表现为双峰模式的日活动节律;(2)岩羊全年的活动速率为(0.17±0.51)km/h,且不同季节的活动速率存在显著差异(χ^(2)=133.48,df=3,p<0.05),冬季活动速率最高,为0.23 km/h;雌雄个体间活动速率存在边缘显著差异(Z=-1.913,p=0.056),雄性个体的活动速率高于雌性个体;(3)岩羊的家域和核域范围无明显季节性差异(家域,χ^(2)=1.623,df=3,p=0.654;核域,χ^(2)=0.727,df=3,p=0.867),性别间无显著差异。建议保护团队在晨昏高峰期加强监测,避免人为干扰;在冬季采取补饲等保护措施确保食物充足;并在制定管理计划时充分考虑家域特征。

关键词：岩羊卫星项圈活动节律家域

基于慢性硬膜下血肿血管内治疗的脑膜中动脉造影解剖研究

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中国临床解剖学杂志 2024年第5期42卷 589-594页

作者：周富佳魏庭丰孙勇匡雄伟王友伟段晓春齐文涛彭爱军刘振生扬州大学附属医院介入放射科江苏扬州225001 扬州大学附属医院神经外科江苏扬州225001

目的观察、分析慢性硬膜下血肿(CSDH)患者的脑膜中动脉(MMA)造影解剖,探讨其对脑膜中动脉栓塞(MMAE)手术策略的指导价值。方法收集2019年3月至2023年3月间期间80例CSDH患者的102支MMA造影解剖图像,由2名高年资神经介入医师独立评估,参照... 详细信息

目的观察、分析慢性硬膜下血肿(CSDH)患者的脑膜中动脉(MMA)造影解剖,探讨其对脑膜中动脉栓塞(MMAE)手术策略的指导价值。方法收集2019年3月至2023年3月间期间80例CSDH患者的102支MMA造影解剖图像,由2名高年资神经介入医师独立评估,参照Adachi分型进行MMA分型,记录MMA分型、起源和变异、危险吻合、栓塞策略、手术相关并发症和术后复发。结果共对101支MMA(79例)进行分型,Ⅰ型44支(43.6%),分型结果一致性程度中等(Kappa=0.54,95%CI:0.39~0.69);A型32支(31.7%),分型结果一致性程度强(Kappa=0.84,95%CI:0.72~0.96)。MMA异位起源于眼动脉(OA)1支(1.0%),OA发自MMA 2支(2.0%),MMA与OA侧支吻合5支(4.9%),与对侧MMA吻合8支(7.8%)。术后随访出现影像学复发2例。结论熟悉MMA造影解剖,尤其是MMA分型及可能存在的危险吻合,对指导MMAE治疗CSDH栓塞剂的选择及栓塞策略制定,提高CSDH血管内栓塞治疗效果及安全性具有重要的临床意义。

关键词：解剖学危险吻合慢性硬膜下血肿脑膜中动脉栓塞

Taxonomic status of Chinese blue sheep(Pseudois nayaur):new evidence of a distinct subspecies

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Integrative Zoology 2020年第3期15卷 202-212页

作者： Hui GAO Nannan LI Yongjie HUANG Fujie QIAO Junle LI Zongzhi LI Yanxiang LI Zhenghuan WANG Liwei TENG zhensheng liu College of Wildlife and Protected Area Northeast Forestry UniversityHarbinChina Forestry Science and Technology Research Institute of Greater Hinggan in Inner Mongolia YakeshiChina School of Ecology and Nature Conservation Beijing Forestry UniversityBeijingChina School of Life Sciences Lvliang UniviersityLvliangChina School of Life Sciences East China Normal UniversityShanghaiChina Key Laboratory of Conservation Biology National Forestry and Grassland AdministrationHarbinChina

The blue sheep is an endemic species to the Qinghai-Tibet Plateau and surrounding *** has been regarded as having 2 subspecies:Pseudois nayaur nayaur and ***,such a classification remains ***,we analyze 10 microsatellite loci and part of the mitochondrial control region for clarification in such taxonomic *** use samples from 168 individuals from 6 geographic populations covering almost all the distribution areas of the species in China to carry out *** trees derived from both the microsatellite and mitochondrial markers combined with the discriminant analysis of principal components(DAPC)and the STRUCTURE analysis reveal that the individuals in the Helan Mountains are well grouped with a distinct evolutionary lineage and are significantly different from the other populations of *** according to Fst values,implying that this isolated population should be categorized as a valid subspecies;namely,Pseudois nayaur *** isolation-by-distance(IBD)analysis shows a significant positive relationship between genetic and geographical distances among the populations.

关键词： blue sheep isolation by distance microsatellite mtDNA control region taxonomy

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“三二连读”近视医学生心理健康状况调查

青岛大学学报（医学版） 2024年第3期60卷 445-450页

作者：王秋环刘振胜杨亚敏孙士梅张瑄侯晓群山东省青岛卫生学校党委办公室山东青岛266071 青岛市第六人民医院院长办公室山东省青岛卫生学校临床教研室山东省青岛卫生学校心理教研组青岛市市立医院护理部

目的了解近视与非近视“三二连读”医学生心理健康状况的差异。方法采用SCL-90症状自评量表对某市“三二连读”医学生进行问卷调查,以1 633名近视学生作为研究组,360名非近视学生作为对照组。同时从中分层选取部分学生进行结构式访谈... 详细信息

目的了解近视与非近视“三二连读”医学生心理健康状况的差异。方法采用SCL-90症状自评量表对某市“三二连读”医学生进行问卷调查,以1 633名近视学生作为研究组,360名非近视学生作为对照组。同时从中分层选取部分学生进行结构式访谈。结果 “三二连读”医学生心理健康水平整体较为积极,心理健康状况不良检出率为32.41%,其中阳性症状出现概率最高的前3项依次为强迫症状、人际关系敏感和抑郁症状。与中学生综合样本比较,一~三年级中职阶段学生躯体化、恐怖因子得分显著偏高(t=4.624~6.375,P0.05)。访谈结果显示,学生对近视及其对未来的职业生涯影响感到焦虑和恐惧。结论 “三二连读”医学生心理健康状况总体较为积极,但其中近视学生心理健康状况不容乐观,应针对性进行心理健康干预。

关键词：学生医科近视心理学调查和问卷

Yr5-virulent races of Puccinia striiformis *** possess relative parasitic fitness higher than current main predominant races and potential risk

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Journal of Integrative Agriculture 2024年第8期23卷 2674-2685页

作者： Gensheng Zhang Mudi Sun Xinyao Ma Wei liu Zhimin Du zhensheng Kang Jie Zhao State Key Laboratory of Crop Resistance and High-Efficiency Production College of Plant ProtectionNorthwest A&F UniversityYangling 712100China

Wheat stripe rust,caused by Puccinia striiformis ***(Pst),is one of the most destructive fungal diseases of wheat,and seriously threatens safe production of the crop *** China,new races historically appeared and rapidly developed to be predominant races and have resulted in ineffectiveness and replacement of wheat resistance cultivars as well as massive reduction in *** the present study,the relative parasitic fitness of the two newlyemerged Yr5-virulent races(TSA-6 and TSA-9)were compared with those of four currently predominant Chinese races(CYR31,CYR32,CYR33,and CYR34)based on evaluation on 10 Chinese wheat *** a result,there were significant differences in the relative parasitic fitness parameters among overall tested races based on multiple comparison(LSD)analysis(PTSA-9(0.95)>TSA-6(0.92)>CYR34(0.29)>CYR31(–1.54)>CYR33(–1.77).The results indicated that two Yr5-virulent races TSA-9 and TSA-6 possessed relative parasitic fitness higher than races CYR34,CYR31,and CYR33,but lower than race CYR32,and have potential risks in developing to be predominant ***,continual monitoring of both Yr5-virulent races,and their variants is *** use of wheat cultivars(lines)with Yr5 resistance gene singly in wheat breeding is essential for being avoided,and is suggested to combine with other effective stripe rust resistance genes.

关键词： wheat stripe rust Puccinia striiformis f.sp.tritici parasitic fitness Yr5 new race

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复发性慢性硬膜下血肿脑膜中动脉影像学特征及介入栓塞治疗

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介入放射学杂志 2024年第4期33卷 413-418页

作者：刘振生魏庭丰孙勇匡雄伟王友伟吴臣义段晓春齐文涛彭爱军张文扬州大学附属医院介入放射科江苏扬州225001 扬州大学附属医院神经外科江苏扬州225001 扬州大学附属医院超声科江苏扬州225001

目的初步评估复发性慢性硬膜下血肿(chronic subdural hematoma,CSDH)脑膜中动脉形态学和血流动力学特征,及脑膜中动脉栓塞(middle meningeal artery embolization,MMAE)治疗疗效。方法回顾性分析我院2019年5月至2022年12月期间31例(15.2%)外科钻孔引流术后复发并接受MMAE治疗的20例单侧CSDH患者的临床及影像资料。于3D-TOF MRA测量患侧MMA直径、相对血流速度,并与随机抽取同期外科钻孔引流术后未复发的20例CSDH患者作为对照。随访观察MMAE术后影像学结果、临床症状改善及并发症等。结果复发组患侧MMA平均直径(1.55±0.45)mm明显大于对照组(1.32±0.36)mm,两组差异有统计学意义(t=2.118,P=0.028)。复发组相对血流速度(SI比值均数,1.45±0.23)明显大于对照组(SI比值均数,1.23±0.26),两组差异有统计学意义(t=3.493,P=0.001)。复发组血肿外膜强化分级评分(2.25±0.55)分,对照组(1.60±0.68)分,两组差异有统计学意义(t=3.322,P=0.002)。MMAE术后影像学随访血肿完全吸收19例(95%),其中3个月完全吸收8例(40%),6个月完全吸收16例(95%),中位吸收时间16周(IQR:7~22)。除1例复发症状反复外,余患者临床症状均不同程度改善,所有患者均未见手术相关并发症。结论与非复发者相比,外科术后复发侧血肿外膜血供更丰富、MMA管径更粗、血流速度更快,MMAE是治疗此类CSDH安全有效的方法。

关键词：慢性硬膜下血肿复发脑膜中动脉血管造影栓塞

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