十二生肖(十二属种)动物与人类进化论——人类起源的探索(三)

地球上十二属种动物与人类的关系存在决定意识,人们的社会存在决定人们的社会(思想)意识。人类产生“十二兽”观念并制订,实行十二兽历法,正是人类自身起源于“十二兽”的先祖这一客观事实在人们头脑中的反映。十二兽:我国又称十二禽,十二属,十二物,十二生肖等。所谓十二兽,我国汉族是指鼠,牛,虎,兔,龙,蛇,马,羊,猴,鸡,狗,猪。让我们从十二兽历法的产生和起源来探讨地球上十二属种动物(十二兽)的先祖与人类进化的关系。世界上四大文明古国———中国、印度、埃及和巴比伦各有其“十二兽历法”,内容上大同小异。中国汉族:鼠,牛,虎,兔,龙,蛇,…     

我想邂逅一只獾

<正>当窗外猫头鹰的"咕咕"声和外公的呼噜声配成一首滑稽的奏鸣曲,我知道,夜已经很深了。穿好衣服,提上鞋子,我蹑手蹑脚地溜出家门。今晚,对,趁着夜深人静,我要独自走入森林,找到外公提到过的那棵老橡树。哪怕田鼠啃咬我的脚趾,虫虫钻进我的衣领,我都会在树下屏住呼吸,耐心守候,因为……     

烟草趣话

笔者不会抽烟,不喜欢烟,记得小时候看大人吸烟,那是一小烟袋,铜制的,有个咀子放烟丝,另一头用嘴吸,烟袋里装有水,当用火柴点燃烟丝时,嘴就随时缓缓吸烟,几下子就吞云吐雾了。由于好奇,大人走后,我就仿效试试,由于吸气太大,一下子把烟袋中的水都吸到口里了,满嘴烟味极不好受,以后再不玩这东西了。后来时兴纸烟,当闻到烟气时头就不舒服,从此与烟绝了缘至今。     

植物大熊猫——野生红豆杉

野生红豆杉,冰川世纪遗留下来的古老树种,以它顽强的生命力屹立在地球上已几百万年。在人类出现在这个星球以前,它就以红彤彤的红豆果,扮靓了地球的山间和密林。它树姿优美,枝繁叶茂,苍劲挺拔,一派生机盎然,令人敬畏。它果实鲜红,艳丽无比,圆如珍珠,寄托相思之情,令人爱怜。它全身是宝,强身健体,防癌抗癌,历史悠久,令人感动。     

广西大戟科新种和新分布

<正> 灌木,通常高3米,枝条细,粗3—5毫米,树皮近灰色,具细条纹,小枝具翅,无毛。叶薄纸质,椭圆形至卵状长圆形,无毛;中脉细,两面凸起,侧脉纤细,5—7对,两面稍凸起,未达叶缘而网结,叶柄长不及2毫米,无毛;托叶挟三角形,长3—4毫米,基部扩大,近耳形,顶端急尖。花腋生,单朵或稀2朵簇生,萼片和花盘互生,无花辦。雄花:花梗丝状,长3—3.5厘米,基部被微柔毛;萼片4枚,覆瓦状排列,披针形,长4.5毫米,     

中国栅蛛属2新种记述(蜘蛛目:栅蛛科)

本文记了分别采自云南高黎贡山的栅蛛科栅蛛属Hahnia 2新种:垭口栅蛛,新种S.yakouensis sp.nov.和肾形栅蛛,新种S.reniformis sp.nov..垭口栅蛛后眼列前曲,交媾腔大,扁圆形,交媾孔1个,位于交媾腔下缘,交媾管粗,呈"人"字形下行分成2支再向两侧扭曲.纳精囊有一肓管斜向上伸出,鉴于上述特征而与Hahnia mridulae Tikader,1970不同.肾形栅蛛交媾孔2个,位于生殖厣腹面中央,纳精囊1对,大,肾形,插入器始于生殖球左下方,鉴于上述特征而与Hahnia xinjiangensis Wang et Liang,1989不同. Abstract： The present paper deals with two new species of the genus Hahnia collected from the Gaoligong Mountains Region of Yunnan Province, China: Hahnia yakouensis sp. nov., Hahnia reniformis sp. nov..     

青海蚕豆种质资源形态多样性分析

对153份青海蚕豆种质资源的形态多样性进行鉴定, 结果表明, 青海蚕豆种质资源具有丰富的形态多样性,平均多样性指数为0.8033,其中青海地方蚕豆品种多样性最丰富,平均多样性指数为0.8288.通过多变量的主成分分析,前6个主成分代表了蚕豆形态多样性的87.89%.基于形态性状,把153份蚕豆种质聚类并划分为3大组群.第Ⅰ组群,初花天数较长,植株中等,子粒中等,单株荚数和粒数多,单株产量较高;第Ⅱ组群,初花天数较短,株高较矮,子粒小,单株荚数和粒数较多,单株产量低;第Ⅲ组群,初花天数较短,株体较高,单株荚数和粒数少,但子粒较大,单株产量较高.     

中国琼楠属二新种

<正> 短叶琼楠 新种 图10 Beilschmiedia brevifolia Y. T. Wei, sp. nov. 乔木,高约8米,小枝略粗壮,无毛;树皮平滑或微裂;顶芽卵圆形,无毛,直径约5毫米,先端尖。叶薄革质,对生,常聚生于枝顶,椭圆形至狭椭圆状披针形,2.5—4(6)厘米,宽1.5—2.5(3)厘米,先端钝,基部近圆形,稀近楔形,两面无毛,干时腹面深灰色,背面黑褐色,中脉在叶面微下陷,在下面凸起;侧脉每边约7条,与网脉在两面凸起;叶柄短,长2—5毫米,无毛。花未见。果序顶生或腋生。果近球形,直经约1.5厘米,干后黑色,果     

象鼩吉森遇上偷窥狂

在非洲的坦桑尼亚北部,有一片茂密的森林,名叫丹堵鲁。为了追踪一种名叫岩象鼩的小动物,生物学家格蕾丝已经在这片森林里待了几个星期。此刻的她,双膝跪地、鼻尖儿蹭着泥,正聚精会神地调试着微型摄影机。哈,调试完毕,我简直是天才!格蕾丝咧开嘴巴,得意地咯咯笑着,这下我一定能……哎呦,什么什么东西钻进了我的鼻子,痒、痒,啊——阿嚏!     

广西容县84例狂犬病流行病学分析及预防对策

目的 通过对容县2000～2007年84例狂犬病流行病学特点进行分析,探讨流行回升的因素,分析目前防治过程中存在的问题,提出狂犬病的预防对策和措施.方法 收集2000～2007年容县狂犬病疫情报告资料及对狂犬病病例的个案调查资料进行分析.结果 近年来,容县狂犬病疫情明显上升,成为有史以来流行高峰,最高年发病率3.04/10万.发病以农民,学生为主,男性多于女性,全年均有病例发生,无明显季节性,狂犬病暴露动物以犬伤为主,暴露部位以头颈部为最危险,潜伏期最短.结论 为有效预防狂犬病流行,应进一步建立完善犬类的管理的法律、法规,使预防狂犬病进入法制轨道,以有效控制狂犬病流行.伤后未能及时正确处理,暴露后免疫率低,是狂犬病发生的重要原因.加强宣传,提高狂犬病的防控知识,政府部门齐抓共管,采取综合性防控措施,才能有效控制狂犬病的流行.     

On the origins of the Mendelian laws

The two laws usually attributed to Mendel were not considered as laws by him. The first law, the law of independent segregation occurs in Mendel's paper as an assumption or hypothesis. Hugo de Vries refers to this as a law discovered by Mendel. This appears to be the first use of an expression equivalent to Mendel's law. In his paper de Vries did not associate the observable characters with structures having a causitive role. That was done by Correns, who transformed the law of segregation of characters into a law of the segregation of anlagen. The second law, the law of independent assortment, is present in embryonic form in Mendel's paper. Here the independent assortment of characters appears as a secondary conclusion to a series of experiments involving several pairs of traits. Mendel repeats the primary conclusion later in the paper but not the secondary one. This leads us to believe that he considered the secondary conclusion as of lesser importance. We note in this context that the 9:3:3:1 ratio commonly associated with the idea of independent assortment, and attributed to Mendel, also does not occur in his paper. A careful reading of the papers of his discoverers shows it was Correns who first drew attention to this ratio. However, he did not formulate the second Mendelian law even though it was clearly implied. Neither was it stated by de Vries. Indeed, the first clear separation of the two laws and the naming of the second law was by T. H. Morgan some 13 years later.     

Notes on the use of ontologies in the biochemical domain

In this paper we aim at presenting the main flavours and uses that are given to the term ontology in the bio-domains. The paper does not intend to be a thorough review of the existing work in the area. It highlights the uses that are given to ontologies in the Scientific Databases and Visualisation Group at EML Research, in Heidelberg.     

Hastening death and the boundaries of the self

When applying moral principles to concrete cases, we assume a background shared understanding of the boundaries of the persons to whom the principles apply. In most contexts, this assumption is unproblematic. However, in end-of-life contexts, when patients are receiving 'artificial' life-support, judgments about where a person's self begins and ends can become controversial. To illustrate this possibility, this paper presents a case in which a decision must be made whether to deactivate a patient's pacemaker as a means to hasten his death. After discussing some common moral principles that are often applied to resolve ethical problems at the end of life and after explaining why they are of no help here, the paper argues that the correct analysis of this case, and of cases of this sort, turns on considerations that relate to the constitution of the self. These considerations, the paper further argues, sometimes resist resolution. The constitution of the self is fixed in large measure by our concepts and social conventions, and these do not always provide determinate grounds for delimiting the boundaries of the self.     

齿蟾属的系统学研究进展

齿蟾属(Oreolalax)为中国特有属,主要分布在我国西南地区。本文对该属的系统学研究进行了综述,包括属的建立与物种组成、地理分布特征、细胞分类学、系统发育研究历史,以及尚需研究或进一步研究的问题。     

The role of the coordinating center in the obesity prevention at the worksite consortium

This paper describes the role of the Coordinating Center for a seven-project consortium funded through a common request for applications. The seven studies are focusing on prevention and treatment of obesity at worksites. These projects are being conducted at different types of work sites that have diverse employee populations. The Center's functions include identifying opportunities for collaboration, encouraging communication among the project investigators, facilitating the adoption of common measures, combining data from two or more projects to achieve greater statistical power, and pooling data on measures such as physical activity, work productivity, health care use, and return on investment. To these ends, the Coordinating Center helped to develop a committee structure within the consortium, established a communications and data transmission web site, and arranged conference calls, committee meetings, and paper writing groups. The development and implementation of these functions are described in this paper.     

日光温室采光面三效率计算模式及其优化选择研究

本文针对日光温室常见的3种采光面（圆弧面、椭圆和抛物面）,给出了各自采光效率、土地使用率和保温效率（简称三效率）的理论计算模式,并通过分析得出,各个高效采光面上的采光效率均随纬度增加而降低,随距冬至的日数而增加,随作物高度而降低,随高跨比增加而增加。在三种采光面中,无论时间、地点、高跨比和种植高度怎样变化,均以圆弧面的采光效率为最高,椭圆面次之,抛物面最低。另一方面,从土地使用效率来看,椭圆面最高,但它的保温效率最低。因此,采光面形状的选择应因使用对象而宜,本文给出了最佳选择建议。     

Observations on the Variability of the Ultrastructure at the Interface of the Cotyledon and Testa of the Cashew Nut (Anacardium occidentale L.)

In a previous paper, an account was given of the ultrastructuralfeatures of the testa and outer cotyledon layers of the cashewnut. Reference was also made to the effect of industrial processingon these structural features. The object of industrial processingis to remove the testa. However, processing is not completelysuccessful and the present paper describes the ultrastructuralfeatures of the areas of the nut where the testa was difficultto remove. The cotyledon cuticle and cuticular layer, also thetesta lining complex, were absent in these areas and severalnew features, including lacunae, were observed.     

药物敏感试验药片法研究

药敏药片对国际三株标准菌试验,抑菌圈直径范围均符合判定标准。与进口药敏药片符合率为１００％。与药敏纸片片间差比较试验,药片抑菌圈＝１～２ｍｍ,精密度高,符合国际要求,而纸片抑菌圈＝９～１３ｍｍ,均匀度检测明显不合格。药片变异系数ＣＶ＝１．３１～２．９２,纸片ＣＶ＝１４．７８～２１．６７表明药片变量离散度小,片间差很小;而纸片变量离散度明显大,故纸片片间差很大。     

Comparison of the Web-Based and Digital Questionnaires of the Spanish and Catalan Versions of the KIDSCREEN-52

Background

The objectives of the study were to develop web-based Spanish and Catalan versions of the KIDSCREEN, and to compare scores and psychometric properties with the paper version.

Methods

Internet and paper Spanish and Catalan versions of the KIDSCREEN-52 were included in a cross-sectional study in school-age children. Web-based and paper Spanish or Catalan versions of the KIDSCREEN-52 were administered to students aged 8 to 18 years from primary and secondary schools in Palafolls (Barcelona, Spain, n = 923). All students completed both web-based and paper versions during school time with an interval of at least 2 hours between administrations. The order of administration was randomized. The KIDSCREEN-52, the Strengths and Difficulties Questionnaire (SDQ), and sociodemographic variables were collected. Missing values, floor and ceiling effects, and internal consistency were compared between both versions, as well as mean score differences, level of agreement, and known groups and construct validity.

Results

Participation rate was 77% (n = 715). Web-based and paper versions showed low percentage of missing values and similar high ceiling effect (range 0 to 44%). Mean score differences showed an effect size (ES) lower than 0.2 in all dimensions. Internal consistency ranged from 0.7 to 0.88, and degree of agreement was excellent (Intraclass correlation coefficient [ICC] range 0.75 to 0.87). Expected differences were seen by sex, age, socioeconomic status and mental health status.

Conclusions

The web-based KIDSCREEN-52 showed similar scale score and reliability and validity than the paper version. It will incorporate the child population in the assessment of quality of life providing a more attractive format.     

Application of the multiscale FEM to the modeling of cancellous bone

This paper considers the application of multiscale finite element method (FEM) to the modeling of cancellous bone as an alternative for Biot’s model, the main intention of which is to decrease the extent of the necessary laboratory tests. At the beginning, the paper gives a brief explanation of the multiscale concept and thereafter focuses on the modeling of the representative volume element and on the calculation of the effective material parameters, including an analysis of their change with respect to increasing porosity. The latter part of the paper concentrates on the macroscopic calculations, which is illustrated by the simulation of ultrasonic testing and a study of the attenuation dependency on material parameters and excitation frequency. The results endorse conclusions drawn from the experiments: increasing excitation frequency and material density cause increasing attenuation.