俄罗斯马特盖奇克遗址、卡缅内洛卡遗址试掘简报

2017年8~9月,重庆市文化遗产研究院同俄罗斯科学院西伯利亚分院考古学与民族学研究所组成联合考古队,对西伯利亚两处旧石器时代遗址进行考古调查与试掘。通过调查与试掘,在叶尼塞河支流—阿巴坎河流域确认了一处旧石器时代晚期遗址—马特盖奇克遗址,该遗址石制品主要包括石核、石片和石器,原料主要是火山岩、燧石和石英岩。通过阶地比对,初步认为该遗址时代为旧石器时代晚期。另外,对库尔塔克卡缅内洛卡遗址的再次发掘出土了44件石制品,包含石核、石片和石器,原料主要是燧石、石英岩和火山岩。此次发掘进一步充实了该遗址的考古材料,也有利于进一步完善该遗址的考古年代学序列。     

广东阳春独石仔洞穴文化遗址发掘简讯

<正> 1960年,广东省博物馆在西江两岸进行文物考古普查时,发现了独石仔洞穴遗址。1964年、1973年两次进行试掘。1978年,该馆与湛江地区博物馆组成的考古发掘队又进行了一次发掘。先后共获得石制品四百多件。动物化石千余件。独石仔洞穴遗址位于东经111°52′、北纬     

吉林桦甸仙人洞旧石器遗址1993年发掘报告

1993年5—6月,仙人洞旧石器遗址发掘获得石制品197件,打制骨器18件,磨制骨器1件以及大量的动物骨骼化石。遗址分为上、下两个文化层,时代属旧石器时代早期之末或中期至晚期。石制品具有以小石制品为主的中国北方主工业的特点。     

石人沟林场旧石器地点试掘报告

2007年8月, 对吉林延边和龙石人沟旧石器遗址周边进行考古调查时, 在石人沟林场东北的红旗河第2级阶地发现了该地点, 并进行了试掘, 面积为69m2。共获116件石制品, 其中出土86件, 采集30件。石制品包括石核、石片、细石叶、工具、断块及废片。根据地层堆积、石制品特征组合及与周边旧石器遗址对比分析, 推测该遗址的地质年代为晚更新世晚期。     

泥河湾盆地大长梁旧石器地点

大长梁旧石器地点位于泥河湾盆地东端 ,埋藏在泥河湾层里。它东距小长梁遗址170米 ,野外观测和地层对比显示 ,二者的地层层位及文化层一致 ,应为同时期遗址。该地点试掘近 7平方米 ,共获得33件石制品和一些动物化石。出土石制品以小型为主 ,原料剥片利用率高 ,成器率低 ,动物化石多为哺乳类肢骨。其年代大于107万年 ,属旧石器时代早期。     

贵州毕节老鸦洞遗址2013年发掘报告

老鸦洞遗址是贵州省毕节市七星关区一处旧石器时代晚期遗址,该遗址上世纪80年代被发现并发掘,出土大量石制品及动物碎骨。为进一步研究该遗址,明确遗址文化及年代性质,2013年7月至8月,发掘队对该遗址进行了再次系统发掘,出土包括石制品、骨制品、古人类牙齿化石、动物化石、植物果核、碳屑在内的标本两千余件,其中,石制品在制作技术上显示了典型的小石片石器传统特征。另有未统计碎骨上万件。碳十四测年结果表明,这些出土物及遗迹记录了旧石器时代晚期距今37000-20000年,以及距今14000年古人类在老鸦洞内生存的历史,是毕节地区旧石器时代晚期最初阶段古人类生存栖息的证据。多个石制品及碳屑、灰烬富集的层位表明了古人类对该洞穴的长时间反复利用,以及末次冰期最盛期期间人类活动的消退现象。     

山西和顺当城旧石器时代洞穴遗址群初步研究

山西和顺当城旧石器时代洞穴遗址群出土了三千余件石制品,23种哺乳动物化石,两块人类顶骨。根据动物化石及^14C同位素年代测定;时代为晚更新世或旧石器时代晚期,该遗址群的发现,对于研究华北地区古人类及各旧石器文化间的关系,提供了新材料。     

内蒙古扎赉诺尔蘑菇山北遗址2019年调查报告

蘑菇山北遗址位于内蒙古自治区呼伦贝尔市扎赉诺尔区蘑菇山一带,发现于1980年,同年和1990年两次采集和试掘,获得了比较丰富的石制品,是中国东北地区一处重要的旧石器时代晚期遗址。2019年8月进行了新的调查和试掘,获得石制品近400件,主要分布于地表和地层表土的角砾堆积中,全部为打制产品,原料为就地取材的安山岩,类型包括石核、石片、断块和石器等;石器器型较大,技术成熟,主要属于石片石器工业。试掘的T3探方出土了丰富的打制石制品,以小型石片为主,是该遗址的新收获。根据石制品的技术特点和类型组合分析,该遗址的年代应为旧石器时代晚期。     

山东日照黄泥梁遗址2012年调查与试掘

2012年在日照黄泥梁遗址的调查、试掘工作中共获得石制品75件,其中试掘出土者71件,地表采集者4件。试掘石制品埋藏于黄土地层的古土壤层中,石制品个体较小,原料以闪长玢岩和脉石英为主,类型包括石核、石片、石器、断块等,属石片石器工业组合;地表石制品原料主要为燧石,类型有细石核、细石叶、端刮器等,属细石器工业组合。本次的调查、试掘确认了黄泥梁遗址的原地埋藏属性,肯定了遗址的发掘潜力和研究价值。黄泥梁遗址的发现和研究将推动山东旧石器考古研究的进展。     

吉林抚松发现旧石器时代文化遗址

1992年6月初,抚松县文物管理局,在对县城东南仙人洞进行调查过程中,发现一些最后鬣狗、野猪和鹿等哺乳动物化石。吉林省文物考古研究所闻讯后,立即派人前往现场调查,又获得些动物化石和几件刮削器、砍砸器等石制品。石制品为石英斑岩和玄武岩等。打片采用锤击法,石器类型以刮削器为主。依石器尺寸看,大者为16.1cm、小者为12.3cm,从此看来,这一地点的石器,属于大工具类型,它是目前东北地区20多处旧石器时代晚期遗址中很少见的大石器工具。     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.     

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     

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.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.