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Forestry activity is one mechanism of invasion by arboreal plants 被引量:1
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作者 Gulnara SITPAEVA Sergey CHEKALIN 《Journal of Arid Land》 SCIE CSCD 2013年第4期434-438,共5页
For a long time,forestry primarily had industrial goals.Volume of wood production was the main criterion of forestry efficacy,and thus rapid-growing arboreal species were cultivated in natural forests.More recently,na... For a long time,forestry primarily had industrial goals.Volume of wood production was the main criterion of forestry efficacy,and thus rapid-growing arboreal species were cultivated in natural forests.More recently,nature protection has become one of forestry's goals.Unfortunately,some introduced,rapid-growing species became aggressive components of natural ecological systems during the interim.In this paper,we first describe a method that we developed to categorize aggressiveness of invasive arboreal plants in natural forest ecosystems of Kazakhstan.We then apply this new scheme to monitoring data of invasive arboreal plants to provide an insight into the invasion potential of different species in the fruit forests of Southeast Kazakhstan. 展开更多
关键词 forest ecosystems AGGRESSIVENESS invasive arboreal plants
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Growth and decline of arboreal fungi that prey on Bursaphelenchus xylophilus and their predation rate
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作者 Haixiao Zhang Zhiyan Wei +2 位作者 Xuefeng Liu Jie Zhang Guiping Diao 《Journal of Forestry Research》 SCIE CAS CSCD 2022年第2期699-709,共11页
Pine wilt disease caused by pine wood nema-todes is a deadly disease of the genus Pinus requiring strong quarantine measures.Since its discovery,it has been widely distributed throughout the world.China is one of the ... Pine wilt disease caused by pine wood nema-todes is a deadly disease of the genus Pinus requiring strong quarantine measures.Since its discovery,it has been widely distributed throughout the world.China is one of the coun-tries with a severe rate of infections due to its abundant pine resources.In this study,nematode-trapping fungi were collected from pine trees in Ninghai City,Zhejiang Prov-ince,which is the key area of pine wilt control in Febru-ary,May,September,October and November.The results showed that nematode-trapping fungi of pine are abundant,especially the number and species detected in each month and are quite different;species of fungi in July,Septem-ber and November were more numerous and had higher separation rates.The dominant species in November was Arthrobotrys oligospora followed by Arthrobotrys cladodes;July and September it was A.cladodes.In each part of the tree,A.cladodes was the most widely distributed with a high separation rate.Therefore,it is the dominant fungal species in the area.Arboreal Bursaphelenchus xylophilus-trapping fungi are dependent on pine wood nematodes,and none were isolated from healthy pine trees.More arboreal B.xylophilus-trapping fungi were found under the bark than in the xylem.There is a close relationship between arboreal B.xylophilus-trapping fungi and pine wood nematodes.How to make use of these resources to reduce the damage of pine wood nematode fusarium is the focus of future research. 展开更多
关键词 arboreal Bursaphelenchus xylophilus-trapping fungi Distribution Dominant species Culture conditions Rate of predation
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Preliminary Study into the Occurrence and Diversity of Arboreal Ants in Three Differently Aged Oil Palm Fields at Kusi
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作者 Selorm Ofori Stephen Owusu-Appiah +2 位作者 Samuel Bawa George Yawson Kwame Afreh-Nuamah 《Journal of Agricultural Science and Technology(A)》 2012年第6期765-775,共11页
The seasonality and relative abundance of arboreal ant species were studied in the oil palm plantations of CSIR-OPRI at Kusi in order to identify the different arboreal ant species in the oil palm canopy and their pos... The seasonality and relative abundance of arboreal ant species were studied in the oil palm plantations of CSIR-OPRI at Kusi in order to identify the different arboreal ant species in the oil palm canopy and their possible interaction with other fauna and flora. Chemical knockdown and field observation and were used in the data collection. Chemical knockdown study was used to collect data on the relative abundance of the ants with application of a synthetic pyrethroid. Field observation was used to study the nesting behaviour, types of nests and where they were built as well as the interaction between the ant species. The fields which were of ages of 8, 11 and 14 years were one hectare containing 143 palms. Chemical knockdown and ant colony studies revealed higher abundance of arboreal ant species on the I 1 years followed by the 8 years and 14 years fields in that order. Oecophylla longinoda was abundant on the I 1-and 14-year-old fields while Crematogaster sp. was the most abundant species on the 8-year old fields. Relatively high numbers of the ant species were encountered in the dry months of study. Positive interaction indicated coexistence between O. longinoda and Crematogaster sp. Interaction between Crematogaster sp. and Tetramorium sp. was antagonistic. Similarly, O. longinoda and Tetramorium sp. were antagonistic to each other. The high abundance and diversity hold promise for the potential use of these ant species as biocontrol agents in an integrated pest management system for the management of the oil palm leaf miner. 展开更多
关键词 SEASONALITY arboreal relative abundance chemical knockdown.
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A blind climber:The first evidence of ultrasonic echolocation in arboreal mammals 被引量:1
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作者 Aleksandra A.PANYUTINA Alexander N.KUZNETSOV +2 位作者 Ilya A.VOLODIN Alexei V.ABRAMOV Irina B.SOLDATOVA 《Integrative Zoology》 SCIE CSCD 2017年第2期172-184,共13页
The means of orientation is studied in the Vietnamese pygmy dormouse Typhlomys chapensis,a poorly known enigmatic semi-fossorial semi-arboreal rodent.Data on eye structure are presented,which prove that Typhlomys(tran... The means of orientation is studied in the Vietnamese pygmy dormouse Typhlomys chapensis,a poorly known enigmatic semi-fossorial semi-arboreal rodent.Data on eye structure are presented,which prove that Typhlomys(translated as“the blind mouse”)is incapable of object vision:the retina is folded and retains no more than 2500 ganglion cells in the focal plane,and the optic nerve is subject to gliosis.Hence,Typhlomys has no other means for rapid long-range orientation among tree branches other than echolocation.Ultrasonic vocalization recordings at the frequency range of 50-100 kHz support this hypothesis.The vocalizations are represented by bouts of up to 7 more or less evenly-spaced and uniform frequency-modulated sweep-like pulses in rapid succession.Structurally,these sweeps are similar to frequency-modulated ultrasonic echolocation calls of some bat species,but they are too faint to be revealed with a common bat detector.When recording video simultaneously with the ultrasonic audio,a significantly greater pulse rate during locomotion compared to that of resting animals has been demonstrated.Our findings of locomotion-associated ultrasonic vocalization in a fast-climbing but weakly-sighted small mammal ecotype add support to the“echolocation-first theory”of pre-flight origin of echolocation in bats. 展开更多
关键词 arboreal locomotion reduced eyes RODENTIA Typhlomys ultrasonic echolocation
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Regulation of dendrite and axon growth and arborization by CD40L-reverse signaling:Interrelationships among JNK,PKC,and ERK1/2 signaling pathways
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作者 Paulina Carriba 《Neural Regeneration Research》 2026年第3期1116-1117,共2页
The nervous system function requires a precise but plastic neural architecture.The neuronal shape dictates how neurons interact with each other and with other cells,being the morphology of dendrites and axons the cent... The nervous system function requires a precise but plastic neural architecture.The neuronal shape dictates how neurons interact with each other and with other cells,being the morphology of dendrites and axons the central determinant of the functional properties of neurons and neural circuits.The topological and structural morphology of axons and dendrites defines and determines how synapses are conformed.The morphological diversity of axon and dendrite arborization governs the neuron’s inputs,synaptic integration,neuronal computation,signal transmission,and network circuitry,hence defining the particular connectivity and function of the different brain areas. 展开更多
关键词 CD L dendrite growth dendrite arborization nervous system neural architecturethe reverse signaling PKC JNK
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Endoplasmic reticulum:Regulator of structural potentiation of dendritic spines
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作者 Philip J.Dittmer Mark L.Dell’Acqua 《Neural Regeneration Research》 2026年第3期1114-1115,共2页
Since the first electron micrograph of“lace-like structures”over 75 years ago,the endoplasmic reticulum(ER)is now viewed as a highly dynamic,constantly remodeling,continuous network of tubules and cisternae that pla... Since the first electron micrograph of“lace-like structures”over 75 years ago,the endoplasmic reticulum(ER)is now viewed as a highly dynamic,constantly remodeling,continuous network of tubules and cisternae that plays an important role in a broad range of cellular activities from calcium regulation to protein synthesis and trafficking.In neurons,the ER extends from the soma through the axon to presynaptic terminals,and throughout the dendritic arbor into as many as half of all postsynaptic dendritic spines at any given time(Falahati et al.,2022). 展开更多
关键词 calcium regulation endoplasmic reticulum er dendritic arbor TRAFFICKING tubules cisternae dendritic spines protein synthesis endoplasmic reticulum
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Towards more-than-human heritage:arboreal habitats as a challenge for heritage preservation
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作者 Stanislav Roudavski Julian Rutten 《Built Heritage》 CSCD 2020年第1期20-36,共17页
Trees belong to humanity’s heritage,but they are more than that.Their loss,through catastrophic fires or under business-as-usual,is devastating to many forms of life.Moved by this fact,we begin with an assertion that... Trees belong to humanity’s heritage,but they are more than that.Their loss,through catastrophic fires or under business-as-usual,is devastating to many forms of life.Moved by this fact,we begin with an assertion that heritage can have an active role in the design of future places.Written from within the field of architecture,this article focuses on structures that house life.Habitat features of trees and artificial replacement habitats for arboreal wildlife serve as concrete examples.Designs of such habitats need to reflect behaviours,traditions and cultures of birds,bats,and other animals.Our narrative highlights the nonhuman aspect of heritage,seeking to understand how nonhuman stakeholders can act as users and consumers of heritage and not only as its constituents.Our working definition states that more-than-human heritage encompasses tangible and intangible outcomes of historical processes that are of value to human as well as nonhuman stakeholders.From this basis,the article asks how the established notions of heritage can extend to include nonhuman concerns,artefacts,behaviours and cultures.As a possible answer to this question,the hypothesis tested here is that digital information can(1)contribute to the preservation of more-than-human heritage;and(2)illuminate its characteristics for future study and use.This article assesses the potential of three imaging technologies and considers the resulting data within the conceptual framework of more-than-human heritage,illuminating some of its concrete aspects and challenges. 展开更多
关键词 Digital heritage Cultural heritage Natural heritage Biological conservation More-than-human heritage More-than-human design Large old trees arboreal habitat
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Visual prognosis and survival outcomes in patients with ocular adnexal diffuse large B-cell lymphoma
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作者 Sirawit Wainipitapong Orapan Aryasit +1 位作者 Panarat Noiperm Mansing Ratanasukon 《International Journal of Ophthalmology(English edition)》 2026年第2期354-361,共8页
AIM:To investigate the clinical characteristics and treatment outcomes,including visual function and overall survival(OS)of patients with ocular adnexal diffuse large B-cell lymphoma(OA-DLBCL).METHODS:This retrospecti... AIM:To investigate the clinical characteristics and treatment outcomes,including visual function and overall survival(OS)of patients with ocular adnexal diffuse large B-cell lymphoma(OA-DLBCL).METHODS:This retrospective cohort study enrolled 29 patients diagnosed with OA-DLBCL based on histopathological biopsy between 2006 and 2023.Patients were stratified into two subgroups:primary OA-DLBCL(no prior history of lymphoma)and secondary OA-DLBCL(history of DLBCL at non-ocular adnexal sites).OS was defined as the time interval from OA-DLBCL diagnosis to death from any cause.Survival analysis was performed using the Kaplan–Meier method,and prognostic factors affecting OS were identified using multivariate Cox proportional hazards regression with a stepwise selection approach.RESULTS:The cohort included 24 patients with primary OA-DLBCL(13 males,11 females;mean age:61.36±18.29y)and 5 patients with secondary OA-DLBCL(2 males,3 females;mean age:50.94±18.17y).Among the primary OA-DLBCL subgroup,12 patients(50%)presented with advanced disease(Ann Arbor stage IIIE–IV),and 16 patients(66%)were classified as T4 disease according to the tumor-node-metastasis(TNM)staging system.The mean final visual acuity was 1.72±1.10 in the primary group and 0.90±1.18 in the secondary group.The 5-year OS rate for the entire cohort was 27.7%.Multivariate analysis identified five factors significantly associated with poor survival outcomes:epiphora[adjusted hazard ratio(aHR),36.95],atherosclerotic cardiovascular disease(aHR,10.08),human immunodeficiency virus(HIV)infection(aHR,12.47),M1 stage(aHR,6.99),and secondary OA-DLBCL(aHR,6.03;all P<0.05).The median OS was 1.68y for primary OA-DLBCL and 1.12y for secondary OA-DLBCL.CONCLUSION:A substantial proportion of patients with primary OA-DLBCL present with advanced-stage disease at diagnosis.Epiphora,atherosclerotic cardiovascular disease,HIV infection,M1 stage,and secondary OA-DLBCL are independent prognostic factors for poor survival outcomes.These findings emphasize the urgent need for optimized therapeutic strategies and early screening protocols to improve the management of OA-DLBCL,particularly in developing countries. 展开更多
关键词 ocular adnexal diffuse large B-cell lymphoma visual prognosis overall survival prognostic factors Ann Arbor staging tumor-node-metastasis staging
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外周血miR-141、miR-451a与弥漫大B细胞淋巴瘤患者化疗应答的预测价值
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作者 赵瑾 关涛 +2 位作者 马莉 郑美婧 苏丽萍 《中国卫生统计》 北大核心 2025年第6期900-903,910,共5页
目的探讨外周血miR-141、miR-451a与弥漫大B细胞淋巴瘤(diffuse large B-cell lymphoma,DLBCL)患者化疗应答的预测价值。方法选取2021年6月至2023年4月我院92例DLBCL患者作为DLBCL组,根据化疗效果分为化疗无效亚组(n=29)与化疗有效亚组(... 目的探讨外周血miR-141、miR-451a与弥漫大B细胞淋巴瘤(diffuse large B-cell lymphoma,DLBCL)患者化疗应答的预测价值。方法选取2021年6月至2023年4月我院92例DLBCL患者作为DLBCL组,根据化疗效果分为化疗无效亚组(n=29)与化疗有效亚组(n=63)。随机选取同期92例入院体检健康者为对照组,采用实时荧光定量聚合酶链反应测定miR-141、miR-451a相对表达量。比较DLBCL组与健康对照组外周血miR-141、miR-451a表达,以logistic回归模型分析筛选DLBCL患者化疗应答影响因素,相关性分析DLBCL患者外周血miR-141、miR-451a与国际预后指数(international prognositic index,IPI)评分、Ann Arbor分期间相关性,受试者工作特征(receiver operating characteristic,ROC)曲线评价DLBCL患者miR-141、miR-451a单项检测及联合检测预测化疗应答的价值。结果DLBCL患者外周血miR-141、miR-451a表达均低于健康对照组(P<0.05);logistic回归分析结果显示Ann Arbor分期、IPI评分均为DLBCL患者化疗应答独立危险因素,外周血miR-141、miR-451a均为DLBCL患者化疗应答性独立保护因素(P<0.05);DLBCL患者外周血miR-141、miR-451a与IPI评分、Ann Arbor分期均具有显著负相关关系(P<0.05);外周血miR-141、miR-451a单独预测DLBCL患者化疗应答的曲线下面积(area under the curve,AUC)值分别为0.770、0.794,二者联合预测AUC值高达0.929,明显高于miR-141、miR-451a单独预测,此时灵敏度、特异度分别为86.21%、85.71%。结论DCBCL患者血清miR-141、miR-451a表达下调,且与应答有关,检测二者水平,可预测DCBCL患者化疗应答,为临床工作提供参考。 展开更多
关键词 弥漫大B细胞淋巴瘤 miR-141 miR-451a 化疗应答 Ann Arbor分期 IPI评分
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The role of primate-specifc genes in the phenotypicevolution of lorises
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作者 Chunyan Chen Yong Shao +2 位作者 Sheng Wang Mingli Li Haifa Qiao 《Current Zoology》 2025年第2期267-272,共6页
Pygmy lorises are arboreal primates primarily found in forest environments across Southeast Asia(Nekaris 2014).Theyhave a diverse diet,including plant secretions,nectar,fruits,invertebrates,tree bark,and bird eggs.All... Pygmy lorises are arboreal primates primarily found in forest environments across Southeast Asia(Nekaris 2014).Theyhave a diverse diet,including plant secretions,nectar,fruits,invertebrates,tree bark,and bird eggs.All 9 known speciesof pygmy lorises are listed as globally endangered species(Nekaris 2014).Pygmy lorises exhibit a range of unique phenotypic characteristics rarely seen among primates. 展开更多
关键词 primate specific genes pygmy lorises southeast asia arboreal primates plant secretions nectar fruits invertebrates tree phenotypic characteristics phenotypic evolution
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On 3-degeneracy of Kite-free Planar Graphs
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作者 WU Qingqin ZHENG Lina WANG Weifan 《数学进展》 北大核心 2025年第3期449-463,共15页
A graph G is called d-degenerate if every subgraph of G has a vertex of degree at most d.It was known that planar graphs are 5-degenerate and every planar graph without k-cycles for some prescribed k∈{3,5,6}is 3-dege... A graph G is called d-degenerate if every subgraph of G has a vertex of degree at most d.It was known that planar graphs are 5-degenerate and every planar graph without k-cycles for some prescribed k∈{3,5,6}is 3-degenerate.In this paper,we show that if G is a planar graph without kites and 9-or 10-cycles,then G is 3-degenerate,hence 4-choosable and list vertex 2-arborable. 展开更多
关键词 planar graph DEGENERACY KITE CHOOSABILITY list vertex arboricity
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Co-housing with Tibetan chickens improved the resistance of Arbor Acres chickens to Salmonella enterica serovar Enteritidis infection by altering their gut microbiota composition
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作者 Qianyun Zhang Qidong Zhu +2 位作者 Yunqi Xiao Qinghua Yu Shourong Shi 《Journal of Animal Science and Biotechnology》 2025年第3期1430-1442,共13页
Background Salmonella enterica serovar Enteritidis(S.Enteritidis)is a global foodborne pathogen that poses a significant threat to human health,with poultry being the primary reservoir host.Therefore,addressing S.Ente... Background Salmonella enterica serovar Enteritidis(S.Enteritidis)is a global foodborne pathogen that poses a significant threat to human health,with poultry being the primary reservoir host.Therefore,addressing S.Enteritidis infections in poultry is crucial to protect human health and the poultry industry.In this study,we investigated the effect of co-housing Arbor Acres(AA)chickens,a commercial breed susceptible to S.Enteritidis,with Tibetan chickens,a local breed resistant to S.Enteritidis infection,on the resistance of the latter to the pathogen.Results Ninety-six 1-day-old Tibetan chickens and 961-day-old AA chickens were divided into a Tibetan chicken housed alone group(n=48),an AA chicken housed alone group(n=48),and a co-housed group(48 birds from each breed for 2 cages).All birds were provided the same diet,and the experimental period lasted 14 d.At d 7,all chickens were infected with S.Enteritidis,and samples were collected at 1-,3-,and 7-day-post-infection.We found that the body weight of AA chickens significantly increased when co-housed with Tibetan chickens at 1-and 3-day-post-infection(P<0.05).In addition,the cecal S.Enteritidis load in AA chickens was significantly reduced at 1-,3-,and 7-day-post-infection(P<0.05).Furthermore,the inflammatory response in AA chickens decreased,as evidenced by the decreased expression of proinflammatory cytokines NOS2,TNF-α,IL-8,IL-1β,and IFN-γin their cecal tonsils(P<0.05).Co-housing with Tibetan chickens significantly increased the height of villi and number of goblet cells(P<0.05),as well as the expression of claudin-1(P<0.05),a tight junction protein,in the jejunum of AA chickens.Further analysis revealed that co-housing altered the gut microbiota composition in AA chickens;specifically,the relative abundances of harmful microbes,such as Intestinimonas,Oscillibacter,Tuzzerella,Anaerotruncus,Paludicola,and Anaerofilum were reduced(P<0.05).Conclusions Our findings indicate that co-housing with Tibetan chickens enhanced the resistance of AA chickens to S.Enteritidis infection without compromising the resistance of Tibetan chickens.This study provides a novel approach for Salmonella control in practical poultry production. 展开更多
关键词 Arbor Acres chicken Co-housing Gut microbiota Salmonella enterica serovar Enteritidis Tibetan chicken
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Ann Arbor分期划分淋巴瘤淋巴结区域的意义探讨 被引量:29
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作者 袁媛 李金娇 +4 位作者 肖荦 邓俊 刘惠 刘媛媛 朱苏雨 《中国现代医学杂志》 CAS 北大核心 2017年第10期107-111,共5页
目的分析淋巴瘤Ann Arbor淋巴结分区法对胸部淋巴瘤累及范围分布划分的充分性,探讨其对淋巴瘤淋巴区域累及野放疗设计的意义。方法收集湖南省肿瘤医院初治的24例治疗前进行过18F-FDG PET/CT检查的累及胸部的淋巴瘤患者,根据PET/CT检查... 目的分析淋巴瘤Ann Arbor淋巴结分区法对胸部淋巴瘤累及范围分布划分的充分性,探讨其对淋巴瘤淋巴区域累及野放疗设计的意义。方法收集湖南省肿瘤医院初治的24例治疗前进行过18F-FDG PET/CT检查的累及胸部的淋巴瘤患者,根据PET/CT检查显示统计病变在胸部累及的区域以及各个区域的发生率。结果淋巴瘤患者在胸部可累及多个区域,病变累及最多的区域是纵隔的4R区(66.7%,16/24),其次是双侧锁骨上区(62.5%,15/24);14例(58%)患者累及除Ann Arbor分期设定的纵隔、肺门、腋窝及锁骨上下区之外的淋巴结区域,包括内乳区淋巴结、心包、胸壁、横隔上淋巴结及膈角后淋巴结。结论 18F-FDG PET/CT能精确显示淋巴瘤在胸部受累的淋巴结区域,目前的Ann Arbor分期并不能详细包括累及胸部的淋巴瘤受累区域,需要尽早设计出更精确的淋巴瘤受累区域分区,以适合现代放疗靶区设计的范围定义及诊断。 展开更多
关键词 18F-FDG PET/CT 淋巴瘤 ANN Arbor分期
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非霍奇金淋巴瘤中增殖指数Ki-67及其临床价值 被引量:14
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作者 李佳 胡荣 +3 位作者 廖爱军 石卉莹 杨威 刘卓刚 《中国实验血液学杂志》 CAS CSCD 2011年第4期935-939,共5页
本研究旨在探讨Ki-67增殖指数(Ki-67PI)与非霍奇金淋巴瘤(NHL)分型及生物学行为间的关系及在弥漫性大B细胞淋巴瘤(DLBCL)临床特征及预后中的价值。回顾性分析2001年1月1日至2010年12月31日期间在我院经病理诊断确诊的NHL病例542例,所有... 本研究旨在探讨Ki-67增殖指数(Ki-67PI)与非霍奇金淋巴瘤(NHL)分型及生物学行为间的关系及在弥漫性大B细胞淋巴瘤(DLBCL)临床特征及预后中的价值。回顾性分析2001年1月1日至2010年12月31日期间在我院经病理诊断确诊的NHL病例542例,所有病例均经免疫组织化学检测Ki-67PI。分析其中初治且病例资料完整的DLBCL患者82例并对其进行临床研究。结果表明,依据WHO(2001)淋巴组织肿瘤分型方案,NHL分型不同,Ki-67PI亦不同。随NHL侵袭程度升高,Ki-67PI均值逐渐增大。ROC曲线分析结果显示,50%为区分惰性淋巴瘤与侵袭性淋巴瘤的临界值。82例初治DLBCL患者临床研究显示,75%为区分DLBCL患者具有良好或不良预后的临界值,且Ki-67的表达与患者Ann Arbor分期及乳酸脱氢酶(LDH)水平相关。按Ann Arbor分期及LDH水平分层研究显示,Ann Arbor分期Ⅲ-Ⅳ期及LDH水平升高组中,具有B症状及IPI评分3-5分的患者、Ki-67PI≤75%的患者3年总生存率(OS)高于Ki-67PI>75%的患者;Ann Arbor分期Ⅲ-Ⅳ期及LDH水平正常组中,具有B症状、Ki-67PI≤75%的患者3年OS高于Ki-67PI>75%的患者。结论:Ki-67PI临界值50%有助于区分惰性及侵袭性淋巴瘤。在DLBCL患者中,应用Ki-67PI临界值75%并联合B症状、Ann Arbor分期、IPI评分及LDH水平等相关因素可综合评价患者预后。 展开更多
关键词 KI-67 Ki-67PI增殖指数 非霍奇金淋巴瘤 弥漫性大B细胞淋巴瘤 ANN Arbor分期 乳酸脱氢酶
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冷刺激下AA肉鸡PCK1基因的表达量 被引量:5
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作者 李剑虹 杜晓彤 +3 位作者 刘火 闫辰 李想 包军 《贵州农业科学》 CAS 北大核心 2014年第8期142-146,共5页
为了解磷酸烯醇式丙酮酸羧激酶1(PCK1)基因在冷刺激下肉鸡组织中的表达情况,选择75只AA肉鸡随机分成5组,其中1组为对照组(正常饲养温度),其余4组为处理组(比正常饲养温度低3℃),于8日龄起每天分别进行冷刺激1h、3h、5h和24h,21日龄结束... 为了解磷酸烯醇式丙酮酸羧激酶1(PCK1)基因在冷刺激下肉鸡组织中的表达情况,选择75只AA肉鸡随机分成5组,其中1组为对照组(正常饲养温度),其余4组为处理组(比正常饲养温度低3℃),于8日龄起每天分别进行冷刺激1h、3h、5h和24h,21日龄结束,22日龄屠宰测定PCK1基因在各组织的表达情况。结果表明:在冷刺激条件下,PCK1基因表达量存在组织特异性,在肝脏中表达量最高,其次是胸腺,第三是肾脏。在相同组织中,除冷刺激24h处理组外,心脏中PCK1基因的表达量随冷刺激时间的延长变化幅度不大,肝脏、肾脏和肺脏中呈上升趋势,脾脏中呈下降趋势,胸腺中呈先下降后上升趋势。对于参与糖异生的肝脏和肾脏,冷刺激对其中PCK1基因的表达量有显著上调作用。 展开更多
关键词 AA(Arbor Acres)肉鸡 冷刺激 PCK1 基因表达
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老年恶性淋巴瘤患者88例临床特点分析 被引量:4
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作者 冀林华 李娜 +8 位作者 郑杰 崔森 李占全 熊辉霞 罗伟 马晓静 熊华 尹启超 建磊磊 《实用医学杂志》 CAS 北大核心 2015年第18期3118-3119,共2页
本研究收集初诊老年恶性淋巴瘤(malignant lymphoma,ML)患者88例,回顾性分析临床资料,探讨该地区老年ML发病的临床特点和预后生存情况,为本地区老年淋巴瘤的早期预防、诊断、分期、疗效评价和预后判断提供依据。1病例与方法1.1病例按... 本研究收集初诊老年恶性淋巴瘤(malignant lymphoma,ML)患者88例,回顾性分析临床资料,探讨该地区老年ML发病的临床特点和预后生存情况,为本地区老年淋巴瘤的早期预防、诊断、分期、疗效评价和预后判断提供依据。1病例与方法1.1病例按照WHO2001年淋巴瘤分类标准,收集2005年1月至2011年12月在青海大学附属医院经临床病理及免疫分型检查确诊的住院初诊老年ML患者88例. 展开更多
关键词 老年恶性淋巴瘤 免疫分型 分类标准 淋巴细胞为主型 CHOP 滤泡性淋巴瘤 淋巴细胞计数 临床资料 间变性 ARBOR
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宰前休息时间对肉鸡体重及肉质与福利的影响 被引量:1
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作者 李剑虹 闫辰 +3 位作者 杜晓彤 张静 李想 包军 《贵州农业科学》 CAS 北大核心 2014年第7期120-123,126,共5页
为探明宰前休息时间对肉鸡体重及肉质与福利的影响,找出肉鸡屠宰前最佳休息时间,以AA肉鸡为研究对象,随机分成2个处理组(室内平养组和室外散养组),在屠宰前分别休息0min、30min、60min、90min和120min后屠宰,测定相应指标。结果表明:宰... 为探明宰前休息时间对肉鸡体重及肉质与福利的影响,找出肉鸡屠宰前最佳休息时间,以AA肉鸡为研究对象,随机分成2个处理组(室内平养组和室外散养组),在屠宰前分别休息0min、30min、60min、90min和120min后屠宰,测定相应指标。结果表明:宰前休息时间和饲养方式对肉鸡的体重和肛温均无显著影响。在平养方式下,宰前休息0min、90min组肉鸡的拍翅时长显著高于30min和120min组(P<0.05),休息0min组肉鸡的pH1值显著小于120min组(P<0.05),休息0min、30min和60min组肉鸡的滴水损失显著大于120min组(P<0.05),休息90min、120min组肉鸡的肉色a*值显著大于0min组(P<0.05);在散养方式下,宰前休息0min组肉鸡的拍翅时长显著高于60min组(P<0.05),休息0min组肉鸡的pH2值显著小于60min组(P<0.05),休息0min和30min组肉鸡的剪切力显著大于60min组(P<0.05)。宰前休息60min、90min和120min时散养组肉鸡的发声行为显著高于平养组(P<0.05),休息30min时散养组肉鸡的拍翅时长显著高于平养组(P<0.05),休息120min时散养组肉鸡的滴水损失显著大于平养组(P<0.05)。运输后适当休息有助于降低机体应激,提高福利,缓解肉质下降,平养组肉鸡的最佳宰前休息时间为90min,散养组为120min。 展开更多
关键词 AA(Arbor Acres)肉鸡 宰前休息时间 生产性能 福利
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Positional behavior and canopy use of black snub-nosed monkeys Rhinopithecus strykeri in the Gaoligong Mountains,Yunnan,China 被引量:2
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作者 Yin Yang Dionisios Youlatos +6 位作者 Alison M Behie Roula Al Belbeisi Zhipang Huang Yinping Tian Bin Wang Linchun Zhou Wen Xiao 《Current Zoology》 SCIE CAS CSCD 2022年第4期401-409,共9页
Studies on positional behavior and canopy use are essential for understanding how arboreal animals adapt their morphological characteristics and behaviors to the challenges of their environment.This study explores can... Studies on positional behavior and canopy use are essential for understanding how arboreal animals adapt their morphological characteristics and behaviors to the challenges of their environment.This study explores canopy and substrate use along with positional behavior in adult black snub-nosed monkeys Rhinopithecus strykeri,an endemic,critically endangered primate species in Gaoligong Mountains,southwest China.Using continuous focal animal sampling,we collected data over a 52-month period and found that R.strykeri is highly arboreal primarily using the high layers of the forest canopy(15–30 m),along with the terminal zone of tree crowns(52.9%),medium substrates(41.5%),and oblique substrates(56.8%).We also found sex differences in canopy and substrate use.Females use the terminal zones(56.7%versus 40.4%),small/medium(77.7%versus 60.1%),and oblique(59.9%versus 46.5%)substrates significantly more than males.On the other hand,males spend more time on large/very large(39.9%versus 22.3%)and horizontal(49.7%versus 35.2%)substrates.Whereas both sexes mainly sit(84.7%),and stand quadrupedally(9.1%),males stand quadrupedally(11.5%versus 8.3%),and bipedally(2.9%versus 0.8%)more often than females.Clamber,quadrupedalism,and leap/drop are the main locomotor modes for both sexes.Rhinopithecus strykeri populations never enter canopies of degenerated secondary forest and mainly use terminal branches in the middle and upper layers of canopies in intact mid-montane moist evergreen broadleaf forest and hemlock coniferous broadleaf mixed forests across their habitat. 展开更多
关键词 arboreal locomotion Myanmar snub-nosed monkey postures
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Accumulation and migration of elements-pollutants in “soil-plant” system within urban territory 被引量:2
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作者 Тatiana А. Mikhailova Оlga V. Shergina Olga V. Kalugina 《Natural Science》 2013年第6期705-709,共5页
In the urbanized territory (the Irkutsk city), the content of sulfur and heavy metals (lead, cadmium, copper, zinc) in soil profile horizons and leaves (needles) arboreal plants were studied. High accumulation of poll... In the urbanized territory (the Irkutsk city), the content of sulfur and heavy metals (lead, cadmium, copper, zinc) in soil profile horizons and leaves (needles) arboreal plants were studied. High accumulation of polluting elements in pine and larch needles, birch and poplar leaves, as well as in all genetic horizons of the city soils was shown. There were revealed elements disbalance in city trees assimilation organs showing in the increase of the polluting elements quota with the parallel decrease of the quota of nitrogen, phosphorus, calcium, magnesium, potassium, manganese. Pollutants concentration in trees needles (leaves) was shown to be closely related to their content in soil horizons. The results speak in favor of high migration ability of polluting elements in soil profile and about possibility their entrance in trees root system and further to assimilation organs from all city soils horizons. It can be concluded that data on accumulation and migration of polluting elements in soils and arboreal trees assimilation organs contribute to adequate assessment of technogenic load on urban ecosystems. 展开更多
关键词 URBAN ECOSYSTEM Air Pollution arboreal Plants Soil Genetic Profile
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橡胶籽饼在肉用型鸡日粮中的饲喂效果 被引量:3
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作者 戴志明 李琦华 李继萍 《云南畜牧兽医》 1990年第1期4-7,共4页
我省年产橡胶籽饼1.3万吨左右,其含粗蛋白质21~24。多年来各植胶垦区已广泛用其饲喂生长肥育猪和产蛋鸡均收到良好效果,但未见用橡胶籽饼饲喂肉鸡的正式试验报道。为研究其饲喂肉鸡的价值和效果,筛选出橡胶籽油饼在肉鸡日粮中的较佳用... 我省年产橡胶籽饼1.3万吨左右,其含粗蛋白质21~24。多年来各植胶垦区已广泛用其饲喂生长肥育猪和产蛋鸡均收到良好效果,但未见用橡胶籽饼饲喂肉鸡的正式试验报道。为研究其饲喂肉鸡的价值和效果,筛选出橡胶籽油饼在肉鸡日粮中的较佳用量,以利充分开发利用当地蛋白质饲料资源,解决我省蛋白质饲料短缺的问题,特进行本试验。 1 材料与方法用同批14日龄Arbor Actes (AA)肉用型商品一代鸡324只,随机分为对照,试1、试2、试3、试4和试5六个组,每组54只。试验鸡单鸡单笼饲养于同一条件下的全梯式鸡笼内。 展开更多
关键词 肉用型 蛋白质饲料资源 鸡日 饲喂效果 生长肥育猪 ARBOR 耗料量 单笼饲养 屠体重 植胶
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