达斡尔族成人体型研究

本文运用Ｈｅａｔｈ－Ｃａｒｔｅｒ人体测量体型法,研究了内蒙古莫力达瓦旗４５６例达斡尔族成人体型。研究结果表明：（１）达斡尔族平均体型男怀为偏内胚层体型的中胚层体型,女性为中胚层休蝗内胚层型;（２）随年龄增长,达斡尔族男女体均呈内因子值增大,中因子值增大,外因子值减小的变化,男性３０岁以后,女性３５岁以后体型变化较大;（３）男女间体型存在极显著性差异,女性中因子值、外因子值低于男性值,而内因子高于男     

山东汉族成人的Heath-Carter法体型研究

应用HeathCarter人体测量法对1001名（男502名,女499名）年龄在20—88岁间的山东省青州和临朐两县市的城乡汉族（以下简称山东汉族）进行了体型评定。结果是：（1）山东汉族男性的平均体型值为44—48—17（城4.6—4.7—1.5,乡4.2—4.8—1.8）,属内胚层-中胚层均衡型体型;各年龄组中以内胚层-中胚层均衡体型、偏内胚层的中胚层体型及偏中胚层的内胚层体型为主。女性的平均体型值为5.7—4.2—1.4（城5.8—4.2—1.3,乡5.6—4.2—1.4）,属偏中胚层的内胚层体型;各年龄组中以偏中胚层的内胚层体型及内胚层-中胚层均衡体型为主。（2）随着年龄的增长,男（20—44岁）女（20—54岁）性内、中因子值上升,外因子值下降。城乡男女以30岁为体型分界点,表现为30岁前后的体型差异。（3）汉族成年人体型存在显著性性别差异,但无城乡差异。（4）山东汉族男性与蒙古族及加拿大样本人群的平均体型相类似;女性平均体型介于鄂温克族、鄂伦春族、达斡尔族和蒙古族样本人群的平均体型之间。     

内蒙古汉族青少年体型分析

运用Heath-Carter体型法,对内蒙古地区3088名（男1489,女1599）7－18岁汉族城乡青少年体型进行分析。结果表明城乡男生偏中胚层型的外胚层型体型最多,中胚层－外胚层均衡型和偏外胚层型的中胚层型 之;城乡女生偏中胚层型的内胚层型体型最多,三胚层中间型和偏内胚层型换上胚层型次之。8－13岁时,同性别同龄组城乡学生的体型差异明显,13岁以后体型接近,城乡男女学生体型的性别间差别显著。     

侗族成人Heath-Carter法体型研究

为探讨我国侗族成人的体型特征,本文采用Heath-Carter人体测量法对广西壮族自治区三江侗族自治县林溪乡515例（男254,女261）20—60岁的土著侗族成人进行了体型评定。结果表明：1）侗族成人男女的平均体型值分别为2.2—4.5—2.4和4.3—4.2—1.5,侗族成人男女分别属均衡的中胚层体型和内胚层—中胚层均衡体型;2）侗族成人男女间SAD值为2.33,T为11.9,男女间的体型有非常显著性差异（P<0.001) ;3) 与国内 、外资料相比, 侗族男女的内、中因子值和男性外因子值居中, 女性外因子值最低。     

习舞青少年的体型初探

本文动用Ｈｅａｔｈ－Ｃａｒｔｅｒ体型法,探讨了呼和浩特市３１１例６－２０岁经过舞蹈专业训练的青少年体型特点,结果显示,习舞青少年具有以外胚层因了占优势的各类体型,男性以偏中胚层型和外胚层型体型为主,女性则以偏内胚层型的外胚层型体型居多。同龄男女型间差异显著。同性别中相邻年龄组间体型无显著性差异。与其它群体相比,习舞青少年内胚层值较低,外胚层值明显高于普通同龄人。青春期阶段是形成这种体型特征的重要时     

达斡尔族青少年体型的Heath—Carter人体测量法研究

运用Heath-Carter人体测量法对1759例（男872,女887）6－19岁达斡尔族青少年体型进行了研究。结果表明：（1）男生6－8岁各组为均衡的中胚层体型,9－12岁各组为三胚层中间型体型,13－17岁各组为中胚层－外胚怪均衡型体型。女生7－12岁各组为三胚层中间型体型,13－14岁各组为均衡的内胚层体型,15－19岁各组为偏中胚层的内胚层体型。（2）男女生6－9岁中胚层体型比例最高,10－12岁外胚层体型比例最高。男生13－16岁仍为外胚层体型比较最高。女生13－15岁、16－19岁均为内胚层体型比例最高。（3）达斡尔族男女生体型与蒙古族体型接近。     

乌孜别克族成人的体型特点

目的：了解乌孜别克族成人的体型特点。方法：运用HeathCarter体型法对201名（男110,女91）乌孜别克族成人体型进行分析。结果：乌孜别克族男性为偏内胚层的中胚层型体型（3.7—5.1—2.0）,女性为偏中胚层的内胚层型体型（5.9—4.9—1.4）。60岁之前随年龄增长,男女性均呈内、中因子值上升而外因子值下降的趋势,二者体型的性别差异极显著。与其他群体相比,乌孜别克族女性的中因子成分明显占优,男性平均体型则与加拿大人最相似。结论：乌孜别克族成年男女的体格都比较健壮。     

黑衣壮族成人Heath-Carter法体型研究

为探讨我国黑衣壮族成人的体型特征,本文采用Heath Carter人体测量法对广西壮族自治区百色市那坡县城厢乡331例(男165,女166)20—60岁的黑衣壮族成人进行了体型评定。结果表明:(1)黑衣壮族成人男女的平均体型值分别为1 58-5 19-2 69和2 99-4 43-1 79,黑衣壮族成人男女分别属偏外胚层的中胚层体型和偏内胚层的中胚层体型;(2)黑衣壮族成人男女间SAD值为1 85,T为16 04,男女间的体型有显著性差异(P<0 001);(3)与国内八个少数民族群体相比,黑衣壮族男性内因子值最小,中因子值最高,男、女性其它因子值居中。     

壮族幼儿Heath-Carter法体型研究

为探讨我国壮族幼儿的体型发育规律,本文应用Heath-Carter人体测量法对广西壮族自治区百色市439例(男228,女211)3-6岁的壮族幼儿进行了体型评定.结果:(1)壮族幼儿随着年龄的增长,内因子值和中因子值逐步下降,外因子值明显上升;(2)各年龄组体型均值均为中因子值＞内因子值＞外因子值,其中3-5岁男女各组均为偏内胚层的中胚层体型,男6-岁组为均衡的中胚层体型,女6-岁组为三胚中间型;(3)壮族幼儿各年龄组男女间SAD值为0.33-0.54,T为1.69-2.35,男女间的体型除3-岁组差异有显著性(P＜0.05)外,其余组差异无显著性(P＞0.05).结论:与汉族资料相比,各年龄组男女内、中、外因子值均为汉族高于壮族;壮族的体型分布比汉族分散.     

江西赣州城市成年客家人体型及其年龄变化

采用Heath-Carter人体测量法对江西城市客家人304例(男154例,女150例)进行了体型评定。结果显示:1)江西城市客家人男性平均体型值为4.0-4.6-2.0,属于偏内胚层的中胚层体型;女性平均体型值为5.0-4.2-1.9,属于偏中胚层的内胚层体型。2)男女均以30岁为体型分界点,表现为30岁前后的体型差异。3)60岁前男女体型存在显著性差异。60岁后男女体型没有差异。4)与国内其他城市汉族比较,城市客家人男性平均体型点与内蒙古汉族最近,女性与云南汉族最为接近。客家人男女体型较其他城市汉族纤瘦,身体的线性度较高。     

Curcuminoids as inhibitors of thioredoxin reductase: A receptor based pharmacophore study with distance mapping of the active site

Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable potent antiproliferative synthetic drugs.     

A Unique Protease Cleavage Site Predicted in the Spike Protein of the Novel Pneumonia Coronavirus (2019-nCoV) Potentially Related to Viral Transmissibility

正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases     

Comparative morphology of the carpel in the Liliaceae: Hewardieae, Petrosavieae, and Tricyrteae

The young pistils in the melanthioid tribes, Hewardieae, Petrosavieae and Tricyrteae, are uniformly tricarpellate and syncarpous. They lack raphide idioblasts. All are multiovulate, with bitegmic ovules. The Petrosavieae are marked by the presence of septal glands and incomplete syncarpy. Tepals and stamens adhere to the ovary in the Hewardieae and the Petrosavieae but not in the Tricyrteae. Two vascular bundles occur in the stamens of the Hewartlieae and Tricyrtis latifolia. Ventral bundles in the upper part of the ovary of the Hewardieae are continuous with compound septal bundles and placental bundles in the lower part. Putative ventral bundles occur in the alternate position in the Tricyrteae and putative placental bundles in the opposite. position in the Petrosavieae. The dichtomously branched stigma in each carpel of the Tricyrteae is supplied by a bifurcated dorsal bundle.     

鸡传染性法氏囊病病毒研究进展

传染性法氏囊病(Infection bursal disease, IBD)是由鸡传染性法氏囊病毒(Infectious bursal disease virus, IBDV)引起的鸡和火鸡的一种高度接触性传染病,给世界各国的禽养殖业带来了巨大损失.自IBDV发现至今新的变异株不断出现,分子结构的改变导致病毒致病力的改变及宿主对疫苗应答的改变,使得传统的疫苗已不能控制其流行,因此各国学者对其基因组结构和功能进行了广泛深入的研究,并积极研制新型有效的疫苗以达到防治的目的.     

Development of a Novel Reverse Transcription Loop-Mediated Isothermal Amplification Method for Rapid Detection of SARS-CoV-2

In conclusion, the novel visual RT-LAMP assay is a simple, rapid, and sensitive approach for detection of SARS-CoV-2, and it is ready for application in primary care and community hospitals or health care centers, and even patients' own houses in response to the current SARS-CoV-2 epidemic because the assay does not require sophisticated equipment and skilled personnel. Furthermore, it is also ready to be used in fields for screening samples from wild animals and environments to facilitate the identification of potential intermediate hosts that mediate the cross-species transmission of SARS-CoV-2 from bats to humans.     

Perinatal Vertical Transmission of Chikungunya Virus in Ruili,a Town on the Border between China and Myanmar

正Dear Editor,Chikungunya virus (CHIKV), an arbovirus in the family of Togaviridae, genus Alphavirus, is transmitted by the A.aegyptii or A. albopictus mosquito, and causes disease in humans characterized by fever, rash, and arthralgia (Silva and Dermody 2017; Suhrbier 2019). It was first reported in 1953 in Tanzania, and caused only a few outbreaks and sporadic cases in Africa and Asia in last century. However, in the epidemic in 2004, CHIKV acquired mutations that conferred enhanced transmission by the A. albopictus mosquito(Schuffenecker et al. 2006). Since then, it has successively caused outbreaks in Africa, the Indian Ocean, South East Asia, the South America, and Europe (Zeller et al. 2016).