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Thorn树和Thorn环的Schultz指标 被引量:1
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作者 刘效珍 边红 张吉林 《塔里木大学学报》 2010年第4期33-36,共4页
1998年Gutman提出了thorn图的概念,而Bonchev与Klein则给出广义的Thorn图并给出Thorn树、Thorn星、Thorn环和Thorn路的Wiener指标公式。本文利用图的对称性得到广义的thorn图(Thorn树、Thorn环)的Schultz指标与Wiener指标的关系,进一步... 1998年Gutman提出了thorn图的概念,而Bonchev与Klein则给出广义的Thorn图并给出Thorn树、Thorn星、Thorn环和Thorn路的Wiener指标公式。本文利用图的对称性得到广义的thorn图(Thorn树、Thorn环)的Schultz指标与Wiener指标的关系,进一步给出这些广义的thorn图的Schultz指标。 展开更多
关键词 thorn thorn Schultz指标
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Hamilton Thorne精子分析仪IVOS Ⅰ与IVOS Ⅱ一致性比对分析 被引量:1
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作者 周华 黎青 +4 位作者 郭丽媛 袁静茹 刘敏 赵笑天 叶国东 《中华男科学杂志》 CAS CSCD 北大核心 2019年第4期315-321,共7页
目的:根据质量控制的要求,对新精子分析系统进行性能验证后,应与旧系统进行一致性评价,从而保证检测结果的准确性。方法:选用原有Hamilton Thorne精子分析仪IVOSⅠ为参比仪器,新购仪器IVOSⅡ为实验仪器,对精子分析系统的主要参数(精子... 目的:根据质量控制的要求,对新精子分析系统进行性能验证后,应与旧系统进行一致性评价,从而保证检测结果的准确性。方法:选用原有Hamilton Thorne精子分析仪IVOSⅠ为参比仪器,新购仪器IVOSⅡ为实验仪器,对精子分析系统的主要参数(精子浓度、前向运动精子百分率、总活力)进行分析比对。结果:两台仪器的方法内和方法间离群值检验、偏倚图和散点图的线性关系和离群值检测所有参数均能符合比对要求,检测结果具有相关性;对实验仪器的检测结果适合范围的检验,当其精子浓度r=0.988,前向运动精子百分率r=0.975,总活力r=0.981,r均≥0.975,表明取值范围合适;对预期偏倚(Bc)的接受性评价表明当精子浓度在12×10~6/ml,允许总误差(TEa)为6.67%;当前向运动精子百分率<31%,TEa为2.34%,两项检测的Bc上限<1/2允许误差(Ea),实验仪器经比对分析显示符合质控要求。结论:通过比对分析,得出两台精子分析系统的主要参数(精子浓度、前向运动精子百分率、总活力)结果具有可比性,检测结果一致,可同时用于临床标本的检测。 展开更多
关键词 计算机辅助精液分析 HAMILTON thorne精子分析仪 比对分析 质量控制
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基于纽马克理论的《The Thorn Birds》翻译策略分析
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作者 秦妍 《江西电力职业技术学院学报》 CAS 2019年第6期134-135,共2页
纽马克翻译理论主要包括文本理论、语义理论及交际理论,按照纽马克理论的种类划分,文学作品属于表达型文本,故应运用语义翻译方法。通过对纽马克翻译理论的分析,以《The Thorn Birds》为例,分别选取了《The Thorn Birds》中的两个典型段... 纽马克翻译理论主要包括文本理论、语义理论及交际理论,按照纽马克理论的种类划分,文学作品属于表达型文本,故应运用语义翻译方法。通过对纽马克翻译理论的分析,以《The Thorn Birds》为例,分别选取了《The Thorn Birds》中的两个典型段落,以此来深入探究基于纽马克理论的具体翻译策略,旨在能够通过详细的案例,为其他小说翻译提供参考依据。 展开更多
关键词 纽马克理论 《The thorn Birds》 文本与语义 翻译策略
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The Imagery of Rose in The Thorn Birds and The Scarlet Letter
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作者 陆梅华 《海外英语》 2014年第15期180-181,183,共3页
The Thorn Birds and Scarlet Letter both explore the theme of love and religion, and both show the skilful use of imagism and symbolism. This essay analyzes the common images of the two novels and compares their simila... The Thorn Birds and Scarlet Letter both explore the theme of love and religion, and both show the skilful use of imagism and symbolism. This essay analyzes the common images of the two novels and compares their similarities and differences. 展开更多
关键词 IMAGERY The thorn BIRDS SCARLET LETTER ROSE
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马铃薯茎线虫Ditylenchus destructor Thorne,1945的描述 被引量:20
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作者 刘维志 刘清利 尼秀媚 《莱阳农学院学报》 2003年第1期1-3,共3页
1995~ 2 0 0 2年期间 ,在辽宁省、吉林省、河北省、山东省的多种植物的根际土壤里发现马铃薯茎线虫Dity lenchusdestructorThorne,1 945 。
关键词 马铃薯茎线虫 土壤 形态描述 鉴定
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The Anatomical Structure of Leaves and Thorns Plants <i>Astragalus pterocephalus</i>Bunge, Growing in Uzbekistan 被引量:1
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作者 Manzura A. Agzamova Guljan M. Duschanova +1 位作者 Hasan A. Rakhmatov Abdulaziz A. Janibekov 《American Journal of Plant Sciences》 2020年第4期569-577,共9页
The results of a study conducted by light microscopy of the anatomical structure of the leaf and thorns of Astragalus pterocephalus growing in the natural habitat of the Amankutan Mountains of the Samarkand region (Uz... The results of a study conducted by light microscopy of the anatomical structure of the leaf and thorns of Astragalus pterocephalus growing in the natural habitat of the Amankutan Mountains of the Samarkand region (Uzbekistan) are presented. The following diagnostic features were identified: leaf—isolateral-palisade type of mesophyll leaf;thick-walled outer walls of the epidermis;the outline of epidermal cells is rectilinear, the projection is polygonal;amphystomatic leaves;submerged numerous stomata of hemiparacitic and anomocytic type;chlorophyll-bearing palisade and spongy parenchyma;closed collateral type of vascular bundles and more sclerified, due to sclerenchymal cells. Thorn—parenchymal-beam type of structure;thin-walled outer walls of the epidermis;under the epidermis is a lamellar collenchyma;closed collateral type of vascular bundles and more sclerified, due to sclerenchymal cells. The complex of the above features reflects the species specificity of the structure of the leaf and spines. Identified and described features that can be used in the taxonomy of the studied tribes and can serve to identify plant materials. 展开更多
关键词 ASTRAGALUS pterocephalus Anatomy Leaf thorn Amankutan Mountains SAMARKAND
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On Eccentric Connectivity Index and Polynomial of Thorn Graph 被引量:1
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作者 Nilanjan De 《Applied Mathematics》 2012年第8期931-934,共4页
The eccentric connectivity index based on degree and eccentricity of the vertices of a graph is a widely used graph invariant in mathematics. In this paper we present the explicit generalized expressions for the eccen... The eccentric connectivity index based on degree and eccentricity of the vertices of a graph is a widely used graph invariant in mathematics. In this paper we present the explicit generalized expressions for the eccentric connectivity index and polynomial of the thorn graphs, and then consider some particular cases. 展开更多
关键词 Ecentricity ECCENTRIC CONNECTIVITY Index ECCENTRIC CONNECTIVITY POLYNOMIAL thorn GRAPHS
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Qualitative and Quantitative Characterization of Wood Fibers of Shrubs and Tree Species of the Tamaulipan Thorn Scrub, Northeastern Mexico and Its Possible Relation to Wood Quality and Utilization 被引量:1
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作者 Ratikanta Maiti Humberto G. Rodriguez Aruna Kumari 《American Journal of Plant Sciences》 2016年第7期1046-1057,共12页
The present study was undertaken to determine the variability in fiber cell morphology and its length among wood species of the Tamaulipan Thorn Scrub, Northeastern Mexico, used for various uses such as timber for fur... The present study was undertaken to determine the variability in fiber cell morphology and its length among wood species of the Tamaulipan Thorn Scrub, Northeastern Mexico, used for various uses such as timber for furniture, fence, post, firewood and sources of forage. The results reveal large variability in fiber cell morphology and fiber cell dimensions. The species are classified on the basis of its fiber cell morphology and fiber cell length and recommended for their possible utilization for different purposes. Wood having fibre cells with broad lumen and thin wall could be suitable for the manufacture of paper documented in the literature viz. Acacia farnesciana, Caesalpinia mexicana, Cordia boisiieri, Diospyros palmeri, Forestieria angustifolia, Morus celtifolia, Prosopis laevigata. This technique can be used in preliminary screening of woody species for its utilization for different purposes. Further studies are needed to confirm. 展开更多
关键词 Wood Fiber Cells Characterization VARIABILITY Woody Species Wood Quality Tamualipan thorn Scrub
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Thorne-Zytkow Objects观测和研究进展
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作者 刘剑宇 张帆 《天文学进展》 CSCD 北大核心 2021年第4期472-489,共18页
近期,引力波探测揭示了诸多超乎意料的双星并合事件,显然对于“双星演化”这个最基础的天体物理问题的理解仍然有很大欠缺。弥补这个缺陷的努力不能仅局限于依赖双星并合这样的稀缺瞬时事件,必须同时寻找其他独立的、更适合长时间观测... 近期,引力波探测揭示了诸多超乎意料的双星并合事件,显然对于“双星演化”这个最基础的天体物理问题的理解仍然有很大欠缺。弥补这个缺陷的努力不能仅局限于依赖双星并合这样的稀缺瞬时事件,必须同时寻找其他独立的、更适合长时间观测的线索和现象。Thorne-Z ytkow Objects(简称TZO)作为假想的、在红巨星或红超巨星内部沉入一个衰退的中子核的奇妙天体,即是能够帮助理解双星演化的一个绝佳研究对象。首先从理论上统述大质量TZO的结构与演化;然后主要介绍大质量TZO在观测上的相关发现,尤其是在小麦哲伦星云中的HV2112;最后主要对当前的相关工作进行总结和展望。 展开更多
关键词 thorne-Zytkow Objects 中子星 致密双星演化 红巨星 红超巨星
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Simple Analysis on Fiona's Phaedra Complex in the Thorn Birds
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作者 刘丹丹 《海外英语》 2011年第4X期185-185,共1页
The Thorn Birds is a saga novel written by Colleen McCullough.As to Frank in the book,it is generally considered that he has an Oedipus Complex.And in a way,Fiona's Phaedra Complex results in Frank's failure i... The Thorn Birds is a saga novel written by Colleen McCullough.As to Frank in the book,it is generally considered that he has an Oedipus Complex.And in a way,Fiona's Phaedra Complex results in Frank's failure in getting rid of his Oedipus Complex.This paper mainly analyzes Fiona's Phaedra Complex and its influence on Frank. 展开更多
关键词 the thorn BIRDS Fiona FRANK Phaedra COMPLEX
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Thorn图的Wiener极化指数
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作者 欧阳庚旭 《河南科学》 2017年第12期1913-1917,共5页
图G的Wiener极化指数指的是图中距离为3的无序点对的数目,Thorn图G~*指的是由图G的第i个顶点添加p_i个悬挂边而得到的图,其中p_i≥0,i=1,2,?,n.利用将图的顶点分类的方法论文研究了Thorn图的Wiener极化指数,此外计算了一些特殊的Thorn图... 图G的Wiener极化指数指的是图中距离为3的无序点对的数目,Thorn图G~*指的是由图G的第i个顶点添加p_i个悬挂边而得到的图,其中p_i≥0,i=1,2,?,n.利用将图的顶点分类的方法论文研究了Thorn图的Wiener极化指数,此外计算了一些特殊的Thorn图的Wiener极化指数,如完全图、完全二部图、星图、路、圈、轮图和扇图. 展开更多
关键词 thorn 悬挂边 Wiener极化指数
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Taxonomic Studies of Weed Communities Growing in Date Palm and Christ’s Thorn Jujube Farms in Ad-Dawadimi, KSA
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作者 Mesfer M. Alqahtani 《Open Journal of Ecology》 2023年第6期345-366,共22页
The problem of food shortage is one of the most important problems facing many countries in the world. Various factors affect the decline in crop productivity. Where weeds are the most important reasons that cause a h... The problem of food shortage is one of the most important problems facing many countries in the world. Various factors affect the decline in crop productivity. Where weeds are the most important reasons that cause a huge loss in crop productivity. Studying agricultural ecosystems, knowing their components and explaining the relationship between all of their components, helps a lot in achieving the highest productivity of different crops in addition to benefiting from some types of weeds, as well as, identifying appropriate methods to control the growth of weeds. In this study, 60 species were listed. The most frequent plant families were Asteraceae, Poaceae and Zygophyllaceae. Annuals were the most common life span, as well as, therophytes were the most frequent life form. The most frequent floristic categories were Saharo-Sindian-Sudano-Zambezian and Saharo-Sindian regions. The most famous indicators of biodiversity (species richness, species evenness and species diversity) have been calculated. For managing and classifying data PC-ORD program (TWINSPAN and DCA analyses) was used. 展开更多
关键词 WEEDS Palm Christ’s thorn Jujube Ad-Dawadimi Saudi Arabia
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Discussion on the Embodiment of the National Style in the Thorn Birds
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作者 Mingming LI 《International Journal of Technology Management》 2013年第12期38-39,共2页
In literary creation, the formation of style is a sign for if the creation of a writer is mature, which is an intensive reflection to the unique creative personality of the writer. There are many kinds of writer' s c... In literary creation, the formation of style is a sign for if the creation of a writer is mature, which is an intensive reflection to the unique creative personality of the writer. There are many kinds of writer' s creation styles, among which the national style is a very prominent level, which can very excellently reflect the cultural characteristics of a nation. The Thorn Birds, which was created by Australian author Lynn McCullough, has the characteristics of a very strong national style. In the works, the national style of Australia is very well reflected from the depiction of the natural environment, the composition way of the novel, and the shape of character image. 展开更多
关键词 The thorn Birds National Style REFLECTION
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Female Ethical Images in The Thorn Birds
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作者 FENG Xingyu 《Cultural and Religious Studies》 2023年第5期246-251,共6页
Titled as the name of the main characters,the seven parts in The Thorn Birds together tell the story of the three generations of the Cleary family from 1915 to 1969.Fiona and Paddy are the first generation,Meggie and ... Titled as the name of the main characters,the seven parts in The Thorn Birds together tell the story of the three generations of the Cleary family from 1915 to 1969.Fiona and Paddy are the first generation,Meggie and Ralph are the second generation,and Justine and Dane are the third generation.Although they are both thorny birds,they have different personal characteristics and life pursuits.Fiona,Meggie,and Justine,as women,are more and more rebellious from generation to generation.They are more and more daring to fight against the Almighty God and their cruel fates.But at the same time,in the process of pursuing self-happiness,there are also dislocations of ethical identity of these women who inevitably make wrong ethical choices.The author of this thesis tries to analyze the ethical identity of the three generations of women in The Thorn Birds from a relatively comprehensive perspective based on literary ethics,and then analyzes the round ethical image of these female characters. 展开更多
关键词 The thorn Birds female characters ethical images
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Thorn-Shape Waveform and Double-Strike Phenomenon Seen in the Impact Force of Soft Materials
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作者 Yukio Fujimoto Chen Liu +2 位作者 Yoshikazu Tanaka Eiji Shintaku Toshiki Nakanishi 《World Journal of Mechanics》 2015年第4期59-69,共11页
In the impact tests of soft materials, we sometimes observe a thorn shape in the rising segment of the impact force waveform. However, the reason for the occurrence of the thorn shape has not been made clear. In this ... In the impact tests of soft materials, we sometimes observe a thorn shape in the rising segment of the impact force waveform. However, the reason for the occurrence of the thorn shape has not been made clear. In this study, thorn-shape waveforms of several soft materials are measured using compact drop test equipment under the condition of a flat frontal impact. A flat frontal impact is the condition where a drop hammer with a flat bottom surface strikes a plate-like soft material in the normal direction. Synchronized impact forces are measured using two sensors installed on both the drop hammer side and the floor side. The examined soft materials are a sponge sheet, sponge rubber sheet, gel sheet, rubber sheet, flat oil clay, low-rebound urethane foam, cork sheet, sliced ham, pork ham steak, and pork. Based on the test results, the features of the thorn-shape waveforms are discussed from a bird’s-eye view. Furthermore, the occurrence mechanism of the thorn-shape waveforms is discussed from the viewpoint of viscosity discontinuity and the double-strike phenomenon. 展开更多
关键词 Impact FORCE thorn-Shape WAVEFORM Soft Material Drop Hammer Viscosity Discontinuity Strain Rate Dependence Double-Strike Phenomenon
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基于英语语言学的著作翻译研究——以The Thorn Birds为例 被引量:2
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作者 史娟芝 《黑河学院学报》 2018年第8期133-134,共2页
著作翻译是英语语言学学习过程中经常会使用到的教学方式,而著作翻译的学习效果是否能达到课堂所需的教学效果,文学名著的选择是比较重要的内容。以著名的澳大利亚文学作品The Thorn Birds(《荆棘鸟》)为例,以英语语言学作为著作研究的... 著作翻译是英语语言学学习过程中经常会使用到的教学方式,而著作翻译的学习效果是否能达到课堂所需的教学效果,文学名著的选择是比较重要的内容。以著名的澳大利亚文学作品The Thorn Birds(《荆棘鸟》)为例,以英语语言学作为著作研究的基础,对其翻译的基本特征和特色技巧进行充分的研究,为翻译相关研究人员提供一些简单的理论思路。 展开更多
关键词 英语 语言学 著作翻译 《荆棘鸟》
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A fragile Rose with Sharp Thorns
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作者 刘迪斯 《魅力中国》 2010年第23期283-283,共1页
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酸压管汇刺漏失效分析及裂纹扩展数值模拟
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作者 冉小丰 曾顺航 +2 位作者 阳婷 张菲菲 刘少胡 《长江大学学报(自然科学版)》 2025年第2期76-84,96,共10页
酸压管汇普遍应用于油田开采作业中,具有提高开采效率、改造油气藏和油田增产等诸多优点。涪陵页岩气开发中,某酸压管汇过早出现刺漏问题,导致现场施工停止造成了一定的经济损失。为了解决现场酸压管汇出现刺漏的问题,挽回经济损失并提... 酸压管汇普遍应用于油田开采作业中,具有提高开采效率、改造油气藏和油田增产等诸多优点。涪陵页岩气开发中,某酸压管汇过早出现刺漏问题,导致现场施工停止造成了一定的经济损失。为了解决现场酸压管汇出现刺漏的问题,挽回经济损失并提高作业可靠性,通过宏观形貌观察、化学成分检测、力学性能测试、硬度试验、金相组织检验、断口微观形貌观察及能谱分析方法,利用ANSYS有限元软件对管汇内壁裂纹扩展方式进行数值模拟研究,分析了酸压管汇出现刺漏的原因以及内壁裂纹形成后扩展的具体方式。结果表明,冲蚀磨损机理是管汇内壁产生裂纹源的根本机制,压裂液的冲蚀磨损作用使得管汇内壁产生沟槽,沟槽尖端处出现应力集中产生裂纹源,在管汇内压作用下裂纹源于长度和深度方向不断扩展,最终贯穿管汇造成刺漏。因此,疲劳断裂是该管汇刺漏的根本原因;其次,管汇内壁在压裂液的冲蚀磨损作用下出现沟槽的根本原因在于管体原材料化学成分不达标导致抗腐蚀能力降低,盐酸作用下加剧了管汇内壁的腐蚀疲劳,导致内壁沟槽的产生。针对涪陵现场酸压管汇刺漏问题,建议酸压管汇提高内表面抗冲蚀磨损性能和材料抗腐蚀能力,以提高疲劳寿命,避免刺漏事故发生。 展开更多
关键词 酸压管汇 刺漏 化学成分 有限元分析 应力强度因子
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国医大师徐经世运用三七-皂角刺治疗肺结节作用机制探讨 被引量:1
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作者 程斌 张亚辉 +4 位作者 李永攀 高云勇 朱婷婷 何玲 董昌武 《中医药临床杂志》 2025年第8期1559-1565,共7页
目的:以国医大师徐经世临床经验为指导,通过网络药理学及分子对接技术分析三七-皂角刺药对治疗肺结节(PN)的作用机制。方法:从中药系统药理学数据库与分析平台(TCMSP)数据库中获取三七和皂角刺的有效活性成分及对应靶点,通过GeneCards、... 目的:以国医大师徐经世临床经验为指导,通过网络药理学及分子对接技术分析三七-皂角刺药对治疗肺结节(PN)的作用机制。方法:从中药系统药理学数据库与分析平台(TCMSP)数据库中获取三七和皂角刺的有效活性成分及对应靶点,通过GeneCards、OMIM数据库筛选肺结节靶点。使用Cytoscape软件构建“药物-成分-疾病-靶点”网络模型,并由STRING数据库绘制PPI网络。将数据导入DAVID数据库进行基因本体富集分析和京都基因和基因组数据库(KEGG)信号通路分析。利用Autodock Vina软件对核心靶点及其对应成分进行分子对接验证。结果:筛选获得三七、皂角刺中有效化合物16个和对应活性靶点188个,与PN交集靶点137个,其中AKT1、TNF、PTGS2、IL6、TP53、IL1B、CASP3、MMP9、ECFR、HIF1A、ESR1、HSP90AA1为核心靶点。KEGG分析显示交集靶点主要富集于癌症通路、脂质与动脉粥样硬化、PI3K-Akt信号通路、MAPK信号通路、TNF信号通路等。分子对接证核心靶点AKT1、TNF、PTGS2与实活性成分槲皮素、漆黄素、山奈酚之间均具有良好的结合性。结论:三七与皂角刺可能是通过调节与癌症相关的信号通路的激活与沉默,参与抑制细胞的生长与增殖,诱导癌细胞的凋亡等多种途径来治疗PN。 展开更多
关键词 网络药理学 肺结节 三七 皂角刺 作用机制
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皂角刺提取物的体外抗菌与抗氧化活性及其组成研究
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作者 胡慧莹 吴克刚 +3 位作者 何东 查钦 林雅慧 段雪娟 《林产工业》 北大核心 2025年第11期37-42,共6页
采用水浸提法、有机溶剂回流法和超临界萃取法提取皂角刺,并探究其提取物的抗菌抗氧化活性及其组成。通过测定提取物对金黄色葡萄球菌和耐甲氧西林金黄色葡萄球菌的抑菌圈来评价其抑菌效果;通过测定提取物对DPPH自由基、PTIO自由基、ABT... 采用水浸提法、有机溶剂回流法和超临界萃取法提取皂角刺,并探究其提取物的抗菌抗氧化活性及其组成。通过测定提取物对金黄色葡萄球菌和耐甲氧西林金黄色葡萄球菌的抑菌圈来评价其抑菌效果;通过测定提取物对DPPH自由基、PTIO自由基、ABTS自由基和总抗氧化能力来评价其抗氧化活性;采用超高效液相色谱-串联质谱鉴定提取物的组成成分。结果表明:有机溶剂回流提取物的抑菌效果最佳;乙醇提取物的抗氧化活性最佳;正己烷提取物中主要成分有萜类、多酚类、脂肪酸类等化合物,含量最高的三萜类化合物槐花二醇(9.46%)具有显著的抗菌能力;乙醇提取物中主要成分为脂肪酸类、萜类、黄酮类等化合物,含量最高的不饱和脂肪酸十八-9-炔酸(7.97%)具有良好的抗氧化能力。皂角刺中含有多种抗菌抗氧化活性成分,具有良好的抗菌抗氧化能力。 展开更多
关键词 皂角刺 抗菌 抗氧化 成分分析 超高效液相色谱-串联质谱
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