桂西壮族手皮纹的分析

本文对广西西部500例健康壮族大、中学生的手皮纹进行了观察分析,计算出各型指纹频率、指纹脊线总数、指纹频度指数、atd角度、a-b脊线数、τ距比、主线横向指数、皮纹花样出现率、掌褶纹出现率共九项基本参数,并将这些数值与汉族作了比较,桂西壮族的手纹与汉族既有相似之处,又有本民族的特点。     

古老而崭新的皮纹学——推荐一个有益的课外活动内容

(一)研究皮纹学的目的皮肤纹理学(dermatoglyphics)一词系Cummins和Midlo于1926年首创,它的含义指研究人体特定部位:指(趾)和手(脚)掌皮肤纹理变化的科学。人的皮肤纹理有二大特征:1高度稳定性。人的皮纹图形在胚胎发育十九周形成,出生后终生不变;2个体差异性。世界上没有两个人的指纹完全相同,即使一卵双生儿指、掌纹相关系数达到0.953±00008,也都存在差异。从考古发现的唐代的单据、契约上按有指纹凭证,说明早在1000多年前,我国劳动人民不仅认识,还学会应用皮纹特征。     

青海土族肤纹学研究

本文报道土族人群的肤纹参数,在知情同意手续下捺印对象的手纹和足纹,样本包括106名男性和108名女性,研究的项目有TFRC、a-b RC,atd,tPD、指纹、指间纹、手大小鱼际,猿线,大拇趾球纹,趾间纹,足小鱼际纹和足跟纹等。为人类学,遗传学和医学提供了较完整的数据集。     

白血病患者的肤纹研究

本文分析了l70名经骨髓检查确诊的白血病患者肤纹形态的手纹部分,数据经电子计算机进行判别分析,指纹类型的判对率为52.58±2.67％。根据掌褶类型判别时,其判对率为57±3.8％。指纹类型在判别急非淋患者及正常人时有显著性。掌褶类型的判别力对急非淋及慢粒患者有显著性。慢粒患者猿线出现率高于正常组。急淋患者右手悉尼线出现率高于正常组。此悉尼线在判别分析中有显著意义。急性白血病患者的弓斗指数高于对照组。白血病患者组掌纹白线的出现率也高于正常组。     

安徽亳州地区回族的皮纹研究

本文报告了安徽省亳州地区400例 (男女各200人) 回族健康人的皮纹参数正常值。调查分析了指纹类型、指嵴纹计数、掌嵴纹计数、主线止区、atd角、t距比、掌褶和掌部花纹类型等项参数。比较了不同性别、左右侧、不同民族和人种间的差异。结果表明,回族有自己的手纹特点,又显示蒙古人种的一般特征。     

湖南侗族的手纹研究

报道了湖南通道侗族337例正常人的指纹型、总指纹嵴数（TFRC）、a-b纹嵴线（a-bRC)、atd角、轴三角百分距（tPD)、大鱼际纹、小鱼际纹、指间区纹、掌褶纹、掌纹主线横向指数（MLIT）等手纹参数正常值,并与侗族不同人群和湖南周边不同民族进行了比较,发现湖南侗族手掌真实花纹和掌褶纹分布频率与湖南周边其他已研究过的民族和侗族群体存在明显差异。     

β地中海贫血症的手纹形态

地中海贫血缥合症是分子遗传病中广泛分 布的一类疾病,是因珠蛋白的一种或多种肤链 合成速率降低所致的遗传性血红蛋白病川。血 红蛋白是当前研究得最透彻的蛋白质之一,但 是对该征患者的浅表形态研究不多。其重型患 者有特殊面容（Doun氏面容）,表型异常较明 显。近年来的研究证明,许多染色体异常综合 症,都有不同程度的皮纹异常〔43,其中头面部表 型异常较明显的患者,其皮纹改变也明显。因 此,本文从探究分子遗传病的皮纹形态出发,介 绍地中海贫血症患者手纹形态的一般规律,供 防治工作参考。     

新疆柯尔克孜族肤纹初步研究

本文报道新疆柯尔克孜族肤纹参数的正常值,样本中有男女各500例,本文的研究包括13类,它们是:指纹总嵴数,a-b间嵴数,指纹,指间花纹,大鱼际纹,小鱼际纹,猿线,掌指c三叉缺失,多个t三叉点,(足母)趾球部纹,足小鱼际纹,趾间纹,足跟纹。     

汉族有耳垂人群的指纹研究

汉族人群有耳垂者与无耳垂者之间,其指纹分布是否存在着规律性变化,对在校汉族大学生进行了调查,采用面对面调查方式获取被检者耳垂资料,记录在调查表中,用油墨拓印法获取被检者指纹图样,并置于放大镜下确认,耳垂组与对照组指纹中的弓形纹、箕形纹、和斗型纹三种基本纹理图形,经X2检验均无显著性差异(P＞0.05).控制耳垂的显性基因与决定指纹形成的多基因是如何相互作用的?有待进行更深入的研究     

汉族指纹白线正常值分析

皮纹嵴线的分化在胚胎发育早期就已发生,嵴线构型的最后形成由遗传决定,亦受一定的环境因素影响,具有高度的稳定性和个体特异性。迄今大量的研究还发现皮纹异常往往与某些人类疾病有关,尤其是遗传性疾病(陈祖芬等,1986;Thompson et al.,1980)。因此,皮纹的观察分析现在不仅是体质人类学和人类遗传学研究的一项重要方法,亦已成为临床疾病诊断的一个有效的辅助手段。本文通过对420例健康汉族学生指纹白线的分析,首次报告了汉族指纹白线正常出现率。     

Characterization of invertebrate cell lines

Summary Cell extracts of five mosquito cell lines and a tick cell line were examined for four cellular isozymes using a cellulose-acetate electrophoretic technique. This method distinguished the cell lines that were derived from the different species. Intraspecies distinctions were not made using the cell lines tested; the significance of this finding is discussed. The usefulness of this technique in identifying a potentially mislabeled cell line was demonstrated. This research was supported by contracts, DADA 17-72C-2170 of the U.S. Army and N00014-78C-0104 of the U.S. Office of Naval Research and grants from the World Health Organization and the Rockefeller Foundation.     

An insect cell line discrimination method by RAPD-PCR

Summary RAPD-PCR with a tenmar single primer for discrimination of insect cell lines was devised. The base sequence of the primers used were TTCGAGCCAG, CCGCATCTAC, GAACGGACTC, and TGAGTGGGTG (GC contents were 60%). Genome DNA was extracted by modified Landry et al. (1993) method. The reaction mixture consisted of 10 μl buffer, 8 μl dNTP mixture (2.5 mM each), 4 μl primer (50 μM), Taq DNA polymerase (2.5 units), 1 μl template DNA; and the reaction was run at 94° C for 2 min (denaturation), followed by 31 cycles of 94° C for 1 min, 42° C for 1 min (annealing), and 72° C for 2 min (extension) and terminated with 72° C for 7 min. By developing the reaction products with agarose gel electrophoresis, it became evident that DNA fragments were amplified with all the primers used. Among four primers, the second primer was selected as a suitable primer for distinguishing cell lines. With this method, cell lines derived from different species were clearly distinguished.     

Paclitaxel administration and its effects on clinically relevant human cancer and non cancer cell lines

Comparisons of the effects of clinically relevant concentrations of the anticancer agent paclitaxel on growth, viability, and apoptosis were determined using in vitro human cell cultures. Growth of the cervical cancer cell line, HeLa-S3, was significantly reduced, and apoptotic index was significantly increased, after 24 h in cultures treated with 12 nM paclitaxel. In contrast, hepatic carcinoma (HEpG2) cells capable of detoxifying paclitaxel were only affected at paclitaxel concentrations ge120 nM. The previously uncharacterized non-cancerous human microvessel endothelial cell line HMEC-1, was more sensitive to paclitaxel treatment than both HeLa-S3 and HEpG2 cells, demonstrating decreased growth and increased apoptosis with 1.2 nM paclitaxel. These results are significant in the design of in vitro cell culture systems to study drug metabolism and toxicity.     

杂交水稻及其三系剑叶表面结构的扫描电镜比较观察

应用扫描电子显微镜,对野败型杂交水稻汕优50及其三系的剑叶表面进行了比较观察。结果表明:保持系和恢复系的气孔长度和气孔复体的表面积极为相似;不育系的气孔大于其父本;而杂交水稻的气孔最大,一定程度上体现了杂种优势。     

Yield and activity of theHeliothis zea single nuclear polyhedrosis virus propagated in cloned and uncloned lines ofHeliothis cells

Summary Heliothis cell lines originated from different laboratories were characterized by isoenzyme analysis and then evaluated for their ability to produce the single nuclear polyhedrosis virus ofHeliothis zea (HzSNPV). A cloned cell line (designated Hzlb3), whose homogeneity was supported by both morphological and isoenzyme analysis, was derived from a parental line (Hzl). Significantly greater yields (about 10-fold) of tissue-culture-derived, non-occluded virus (TCNOV) were obtained when compared to the parental line. The Hzlb3 clone also gave significantly higher yields of TCNOV than the Hz3 and UND-K cell lines. Although lines Hzl, Hz3, and Hzlb3 produced significantly more polyhedral inclusion bodies (PIB) than line UND-K, the infectivity of PIB from UND-K equaled that of lines Hzl and Hzlb3.     

Survival of Toxoplasma gondii in mosquito cell lines and establishment of continuous infection in Vero cell cultures

Under the experimental conditions, proliferative forms of Toxoplasma gondii survived but did not multiply in three Aedes cell lines capable of growing at 35 C: A. albopictus, A. aegypti (hollow vesicles), and A. w-albus. Results were completely negative for Culex quinquefasciatus and Anopheles stephensi cell cultures, which had to be maintained at 29 C. The organism did multiply in Vero (vertebrate) cell cultures, maintained at 35 C. In the Vero cells, a continuous infection was established during the first passage and maintained through two consecutive cell transfers of persistently infected cells.     

辽宁大学生足的尺寸和形态的研究

目的探明辽宁地区大学生的足形发育现状。方法采用国际通用的足部测量学方法,调查了辽宁籍汉族大学生319（男156,女163）名。结果辽宁男女大学生足部测量值均比日本相应值小。各测量值有明显的性差,也存在左右差,其中足长右侧>左侧分别男性为23.1%、女性34.4%;右侧=左侧男性为21.8%、女性为47.2%;右侧<左侧男性为 55.1 %、女性为 18.4%, 男女性左右差的构成比有显著性差异。 足型构成比以中间型最多, 男性占 80.1 %, 女性占 81.0%;短宽型男性占 12.2%, 女性占 8.6%;窄长型男性 占7.7 %, 女性占 10.4 %。 结论 辽宁男女大学生足形相对较短窄瘦, 足长和足宽有明显的民族差和 地区差。     

Initial contact and toe off event identification for rearfoot and non-rearfoot strike pattern treadmill running at different speeds

The purpose of this study was to determine the validity of kinematic based initial contact (IC) and toe-off (TO) identification algorithms for rearfoot and non-rearfoot runners across a broad range of treadmill running speeds. 14 healthy active participants completed six 20–60 s treadmill running trials at 6 speeds: 2.24, 2.68, 3.13, 3.58, 4.02, and 4.48 ms⁻¹. 3D kinematic data were collected for the last 20 s of each trial. Force plates (FP) were used as the gold standard to determine ICFP and TOFP for each step. Three algorithms for finding IC, IC_Milner, IC_Alvim, IC_Alvim-mod, and one algorithm for finding toe off, TO_Fellin, were chosen for analysis. Root mean square errors (RMSE) and difference scores with 95% confidence intervals were computed for IC, TO and stance time (ST). IC_Alvim RMSE ranged from 0.175 to 0.219 s. ST_Alvim RMSE ranged from 0.168 to 0.216 s. IC_Alvim-mod RMSE ranged from 0.105 to 0.131 s. ST_Alvim-mod RMSE ranged from 0.108 to 0.129 s. IC_Milner RMSE ranged 0.012 to 0.015 s. ST_Milner RMSE ranged 0.019 to 0.024 s. IC_Milner accuracy was inversely related to speed. IC_Milner corrected with a linear regression equation reduced differences to- 0.006 ± 0.012 s with 86% of foot strikes identified within 20 ms and 58% with 10 ms. TO_Fellin RMSE ranged from 0.012 to 0.016 s. IC_Milner adjusted for speed and TO_Fellin can be used to predict IC and TO within a broad range of treadmill running speeds (2.24–4.48 ms⁻¹) and for rearfoot and non-rearfoot strikers.     

Segmental foot and ankle kinematic differences between rectus,planus, and cavus foot types

The presence of multiple foot types has been used to explain the variability of foot structure observed among healthy adults. These foot types were determined by specific static morphologic features and included rectus (well aligned hindfoot/forefoot), planus (low arched), and cavus (high arched) foot types. Unique biomechanical characteristics of these foot types have been identified but reported differences in segmental foot kinematics among them has been inconsistent due to differences in neutral referencing and evaluation of only select discrete variables. This study used the radiographically-indexed Milwaukee Foot Model to evaluate differences in segmental foot kinematics among healthy adults with rectus, planus, and cavus feet based on the true bony alignment between segments. Based on the definitions of the individual foot types and due to conflicting results in previous literature, the primary study outcome was peak coronal hindfoot position during stance phase. Additionally, locally weighted regression smoothing with alpha-adjusted serial t-test analysis (LAAST) was used to compare these foot types across the entire gait cycle. Average peak hindfoot inversion was −1.6° ± 5.1°, 6.7° ± 3.5°, and 13.6° ± 4.6°, for the Planus, Rectus, and Cavus Groups, respectively. There were significant differences among all comparisons. Differences were observed between the Rectus and Planus Groups and Cavus and Planus Groups throughout the gait cycle. Additionally, the Planus Group had a premature peak velocity toward coronal varus and early transition toward valgus, likely due to a deficient windlass mechanism. This assessment of kinematic data across the gait cycle can help understand differences in dynamic foot function among foot types.