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1.
调查了哈密市维吾尔族524人(年龄16~50岁,男287,女237)的手指指毛分布。结果表明远侧指节不生指毛,近侧和中间指节均生有指毛。左右手同手指毛分布基本对称,每指两侧指毛分布不对称。维吾尔族人中间指节指毛出现率低于白种人,高于印度人、日本人、尼日利亚人和我国藏族人、汉族人、壮族人。男性指毛出现率高于女性。  相似文献   

2.
蒙古族手指指毛的分布   总被引:3,自引:1,他引:2  
调查了16~50岁蒙古族566人(男284,女282)的手指指毛分布情况。结果表明远侧指节不生指毛,近侧和中间指节均生有指毛。左右手同位指指毛分布基本对称,每指两侧指毛分布不对称。蒙古族人中间指节指毛出现率偏高,低于白种人,高于印度人、日本人、尼日利亚人和我国藏族人、汉族人、畲族人、壮族人。且存在性别高度显著性差异(男>女,P<0.001)。  相似文献   

3.
通过对居住在甘肃省保安族东乡族撒拉族自治县的年龄在16~50岁之间的保安族人312例(男159例,女153例)手指指毛分布情况进行调查,随机取样观察记录手指各指指毛的分布情况,对2~5指近侧指节指毛位居桡侧、正中及尺侧者,分别以R、M、U记录,并进行统计分析.以便了解保安族人手指指毛的分布情况,为进行体质人类学研究积累资料.结果:保安族人手指远侧指节没有指毛生长,近侧指节全部生有指毛,中间指节一部分人生有指毛,保安族人中间指节指毛出现率为41.7%(男49.1%,女34.0%),男性高于女性(P=0.007<0.05).2~5指中间指节指毛出现率构成比由高到低的排列顺序为4>3>5>2.手指指毛的分布规律和出现率是反映体格特征的有效参数,对进行体质人类学研究有重要价值.  相似文献   

4.
蒙古族发旋和手指毛的调查研究   总被引:1,自引:0,他引:1  
作者于1985年1月至5月调查了内蒙古自治区蒙古族人495例发旋(男309例,女186例)和643例手指毛(男314例,女329例)。蒙古族人单旋出现率为91.92%。发旋旋向顺时针为68.79%,逆时针为31.21%。发旋主要出现在右后象限(60.22%)。蒙古旗人单旋出现率低于藏族人(95.78%),而高于汉族人(85.37%),差异均显著。蒙古族人手指毛近段指节出现率为100%,中间段为49%,远段指节末发现有手指毛。蒙古族人中间段指节手指毛出现率大小顺序为:拇指>环指>中指>小指>食指。  相似文献   

5.
为研究皮肤位移对人手运动三维图像检测精度的影响 ,对食指 -拇指对捏运动过程进行了测试、分析。并在此基础上 ,利用人手运动三维图像实时检测装置 ,进行了标定实验 ,取得了较为理想的测量效果。分析表明 :1)在进行手指一般运动分析时 ,如果在手指上选择优化的标志点粘贴位置 ,标志点族的面积和长度相对变化量小于 5 % ,皮肤位移产生的影响基本可以忽略不计 ;2 )皮肤位移对各指节测量精度影响有所不同 ,远侧指节误差较小 ,近侧指节产生的误差较大 ;3)当对捏指的屈曲角度增大 ,对捏运动周期百分比达 6 0 %时 ,皮肤位移对检测精度的影响快速增大。  相似文献   

6.
七星瓢虫成虫体表的细微结构   总被引:2,自引:1,他引:1  
利用扫描电镜对七星瓢虫进行了整体性观察.结果显示,①瓢虫触角末端感觉毛分布稠密,并且有嵴突状构造,嵴突及其周围着生有椎状感受器.②鞘翅部分区域有凹窝状结构,内生有倒伏状的微毛.③足部第一、二跗节内侧有感觉毛形成的“毛垫”.这些细微结构可弥补一般形态学观察的不足  相似文献   

7.
广藿香叶的发育及不同发育期挥发油的分布   总被引:1,自引:0,他引:1  
利用常规石蜡切片、半薄切片和组织化学等方法,对广藿香叶的发育及发育过程中挥发油分布部位的变化作了系统研究.结果表明:广藿香叶的发育可划分为原分生组织、初生分生组织和初生结构形成3个阶段,在叶的原分生组织中,未见有挥发油滴;在初生分生组织和叶初生结构形成早期,叶表皮上着生大量腺毛(其中盾状腺毛比较多),此时腺毛是挥发油的主要分布部位;叶的初生结构形成后,叶肉组织、尤其是栅栏组织成了挥发油的主要分布部位.  相似文献   

8.
通过光学显微镜和扫描电子显微镜,观察了喜树成熟叶的表皮细胞、气孔器、表皮毛形态,以及上、下表皮细胞外壁上的角质膜和蜡质纹饰.结果表明,上、下表皮层的形态结构差异较大.仅下表皮有气孔分布,气孔类型属不规则类型,常可观察到两个气孔着生在一起.上、下表皮均分布有非腺性单细胞毛  相似文献   

9.
目的:介绍一种新型实用的手部无创动态牵引外固定架在治疗指关节骨折的初步应用效果,探索手指关节部位骨折的简便有效的无创治疗方法。方法:无创动态指骨牵引架应用于拒绝手术的单手指关节部位闭合性骨折患者,以患指指甲为牵引着力点,行无创牵引治疗的同时早期关节屈伸锻炼,在电视X—ray透视下监测骨折复位及愈合情况。结果:跟踪随访应用无创动态指骨牵引架治疗指关节骨折患者30例,全部骨性愈合,愈合时间2~3.5个月,平均2.2个月。配戴牵引架的时间为1.5-3.0个月,平均2个月。患者对此牵引架的接受程度及手指功能恢复情况为,满意23例,基本满意5例,不满意2例,满意度93.3%。结论:无创动态指骨牵引架行指骨关节部位骨折的无创牵引治疗,方便、实用、固定稳定、操作简单,轻巧舒适,对指骨关节部位的骨折有良好的治疗效果,值得在临床中推广应用。  相似文献   

10.
在皮肤经络交感神经敏感线和皮肤交感物质分布线的基础上,进一步在大鼠身上研究了交感物质分布线的组织学基础.用^3H-酪胺酸示踪的微观放射自显影法显示皮肤儿茶酚胺(CA)物质的分布,用SPG荧光染色法观察皮肤交感肾上腺素能神经纤维的分布.结果显示,大鼠皮肤中的CA物质主要沿纵行皮肤带上的毛囊间呈星状分布;位于交感物质分布线上的几乎每个立毛肌上都有1束或几束交感神经纤维支配,且相互连接成局部网络,而线外的立毛肌上则很少.表明交感物质分布线来源于支配立毛肌的交感神经网络,结合有关阻断或兴奋经脉线上α受体和拔除毛囊等对针刺效应影响的实验以及《黄帝内经》对经络与毛囊关系的论述,明确了经络的实体形态学基础是受丰富交感神经支配的毛囊立毛肌,提出了毛囊立毛肌在经络活动中的动力靶器官作用.  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

15.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

16.
以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.  相似文献   

17.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

18.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

19.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

20.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

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