湖北秭归三叶虫Ushbaspis hubeiensis新材料及其研究意义

文中通过对Ushbaspis hubeiensis (Lin,1978)新材料的研究,对该种三叶虫躯体构造特征做了重要补充,使人们对它有更全面的认识,也将为今后进一步对乌什巴盾壳虫类(ushbaspid) 三叶虫的分类、系统演化的研究以及对寒武纪第二世生物地层划分,提供一些重要依据。文中还就张文堂等（1980）将采自贵州湄潭的Kepingaspis sp.标本鉴定为Metaredlichioides constrictus Qian and Yao,1974提出质疑。     

论三叶虫身体的划分和尾部构造北大核心CSCD

文中通过对三叶虫身体尾部构造及其功能与其它节肢动物如昆虫类、肢口类等动物的腹部和尾部等比较后,提出将具有内脏器官和体节的"尾部"修订为腹部,在其后由背壳愈合而成的单一硬板,其内部不具内脏器官者,划为三叶虫的真正尾部。因而三叶虫身体可分成头部(cephalic region)、胸部(thoracic region)、腹部(abdominal region)和尾部(pygidium region)四部分,它不仅与有关节肢动物命名一致,也符合一般动物身体器官分化规律。     

论三叶虫身体的划分和尾部构造

文中通过对三叶虫身体尾部构造及其功能与其它节肢动物如昆虫类、肢口类等动物的腹部和尾部等比较后,提出将具有内脏器官和体节的"尾部"修订为腹部,在其后由背壳愈合而成的单一硬板,其内部不具内脏器官者,划为三叶虫的真正尾部。因而三叶虫身体可分成头部(cephalic region)、胸部(thoracic region)、腹部(abdominal region)和尾部(pygidium region)四部分,它不仅与有关节肢动物命名一致,也符合一般动物身体器官分化规律。     

应用聚类分析研究我国palaeolenid类三叶虫分类——兼论我国黔东统沧浪铺组乌龙箐段生物带划分

文中通过对我国己发表的palaeolenid类三叶虫中的34个种头盖特征组合进行Q型聚类分析,研究我国palaeolenid类三叶虫属种的分类,并结合传统定性分析,对该34个种(包括2个属、1个亚属和1个亚种)进行修订,且合并成1个属4个种(亚种),即:Palaeolenus douvillei Mansuy,1912,Palaeolenus lantenoisi Mansuy,1912,Palaeolenus lantenoisi longispinus(Chang and Chu,1980)和Palaeolenus fengyangensis Chu,1962。文中还提出沧浪铺组乌龙箐段可采用Palaeolenus fengyangensis带(上)和Palaeolenus lantenoisi带(下)两生物带意见。     

评《再论大古油栉虫属Megapalaeolenus》一文

文中简要回顾大古油栉三叶虫属Megapalaeolenus是否是有效属的有关讨论。对罗惠麟等(2014)《再论大古油栉虫属Megapalaeolenus》一文做了简要评述,再次从定量分析角度,研究我国Palaeolenus fengyangensis带的palaeolenid类三叶虫分类。其所获得的结论与笔者(2004,2009)从定性分析和林天瑞(2014)应用聚类分析对我国palaeolenid类三叶虫分类及其生物带划分的结论完全一致,即Megapalaeolenus是Palaeolenus的晚出异名,应予废弃;Megapalaeolenus带无效,所在层位属Palaeolenus lantenoisi带。     

张文堂生平及主要学术成就

正张文堂,古生物学家、地层学家,对早古生代地层,三叶虫、叶肢介等门类化石尤有精深研究。他独著或作为主要编撰者的《中国的奥陶系》、《中国生物地层学》(英文版)、《中国的三叶虫》、《中国的叶肢介化石》、《西南地区寒武纪三叶虫动物群》、《华北地区寒武纪三叶虫(英文)》、美《无脊椎古生物学大典》三叶虫分卷莱德利基虫亚目之修订(英文)等均为经典巨著。是寒武纪生命大爆发的"澄江动物群"命名者和研究之先驱。     

湘西北寒武系黔东统杷榔组三叶虫的新材料北大核心CSCD

湘西北寒武系杷榔组出露较好,三叶虫化石十分丰富。文中报道描述了在花垣县排吾乡两个剖面的杷榔组泥页岩中采得的三叶虫两属两种Dinesus bura(Qiu,1980)和Eosoptychoparia guizhouensis Yuan in Zhang et al.,1980。本次研究将双岛虫属Dinesus在中国的地层延限下延至杷榔组(寒武系第二统第四阶)的中下部。这些新材料在湖南杷榔组的发现,扩大了这两属的地理分布范围,并提供了更多本区与其他地区的地层进行对比的材料。以上新发现更进一步丰富了寒武纪江南斜坡带杷榔组三叶虫动物群的内容。     

湘西北寒武系黔东统杷榔组三叶虫的新材料

湘西北寒武系杷榔组出露较好,三叶虫化石十分丰富。文中报道描述了在花垣县排吾乡两个剖面的杷榔组泥页岩中采得的三叶虫两属两种Dinesus bura(Qiu,1980)和Eosoptychoparia guizhouensis Yuan in Zhang et al.,1980。本次研究将双岛虫属Dinesus在中国的地层延限下延至杷榔组(寒武系第二统第四阶)的中下部。这些新材料在湖南杷榔组的发现,扩大了这两属的地理分布范围,并提供了更多本区与其他地区的地层进行对比的材料。以上新发现更进一步丰富了寒武纪江南斜坡带杷榔组三叶虫动物群的内容。     

关于我国晚出同名三叶虫属及其替代名北大核心

回顾近年来所发现的与我国三叶虫有关的11个晚出同名属及其替代名的研究现状,详细报导最近新发现的37个晚出同名三叶虫属中的13个属及其替代名。这些属涉及到寒武纪,奧陶纪,志留纪和泥盆纪的三叶虫。此外,河南龙Honania Young,1979(模式种H.complicidentata Young,1979)是产于河南济源晚二叠世爬行类锯齿龙科的一个属,由于晚于三叶虫河南虫HonaniaLee in Luet al.,1963(模式种H.lata Lee in Luet al.,1963)所建,成为无效属名,建议将河南龙的属名更名为钟键龙(新属)Zhongjiania gen.nov.。     

关于我国晚出同名三叶虫属及其替代名

回顾近年来所发现的与我国三叶虫有关的11个晚出同名属及其替代名的研究现状,详细报导最近新发现的37个晚出同名三叶虫属中的13个属及其替代名。这些属涉及到寒武纪,奧陶纪,志留纪和泥盆纪的三叶虫。此外,河南龙Honania Young,1979(模式种H.complicidentata Young,1979)是产于河南济源晚二叠世爬行类锯齿龙科的一个属,由于晚于三叶虫河南虫HonaniaLee in Luet al.,1963(模式种H.lata Lee in Luet al.,1963)所建,成为无效属名,建议将河南龙的属名更名为钟键龙(新属)Zhongjiania gen.nov.。     

Crystal structure, detonation performance, and thermal stability of a new polynitro cage compound: 2, 4, 6, 8, 10, 12, 13, 14, 15-nonanitro-2, 4, 6, 8, 10, 12, 13, 14, 15-nonaazaheptacyclo [5.5.1.13, 11. 15, 9] pentadecane

A new polynitro cage compound 2, 4, 6, 8, 10, 12, 13, 14, 15-nonanitro-2, 4, 6, 8, 10, 12, 13, 14, 15-nonaazaheptcyclo [5.5.1.1(3,11).1(5,9)] pentadecane (NNNAHP) was designed in the present work. Its molecular structure was optimized at the B3LYP/6-31 G(d,p) level of density functional theory (DFT) and crystal structure was predicted using the Compass and Dreiding force fields and refined by DFT GGA-RPBE method. The obtained crystal structure of NNNAHP belongs to the P-1 space group and the lattice parameters are a = 9.99 ?, b = 10.78 ?, c = 9.99 ?, α = 90.01°, β = 120.01°, γ = 90.00°, and Z = 2, respectively. Based on the optimized crystal structure, the band gap, density of state, thermodynamic properties, infrared spectrum, strain energy, detonation characteristics, and thermal stability were predicted. Calculation results show that NNNAHP has detonation properties close to those of CL-20 and is a high energy density compound with moderate stability.     

Distribution of N,P, K,Ca, Mg,S, Zn,Fe, Mn and Cu in groundnut

Summary Concentration of N, P, K, Ca, Mg and S in summer groundnut crop was higher than in kharif while Zn, Fe, Mn and Cu contents were higher in summer crop. Kernel's N, P and Zn; Leaflet's Ca and Mn; Stem's K and Fe; Root's S and Cu and Petiole's Mg contents were highest. Shell's N, P, K, Mg, S, Zn and Cu; Kernel's Ca, Fe and Mn contents were the least. N, P, K, S, Zn and Cu concentrations decreased linearly as the crop grew. Ca, Mg, Fe and Mn concentrations did not display any distinct pattern. Ca concentration was positively correlated with pod yield in both the seasons.     

Simultaneous measurement of the trace elements Al, As, B, Be, Cd, Co, Cu, Fe, Li, Mn, Mo, Ni, Rb, Se, Sr, and Zn in human serum and their reference ranges by ICP-MS

The goal of this article was to establish reference ranges of the concentration of trace elements in human serum and to compare these results with those reported by other authors. We describe the sample preparation and measurement conditions that allow the rapid, precise, and accurate determination of Al, As, B, Be, Cd, Co, Cu, Fe, Li, Mn, Mo, Ni, Rb, Se, Sr, and Zn in human serum samples (n=110) by inductively coupled plasma-mass spectrometry (ICP-MS). Accuracy and precision were determined by analyzing three reconstituted reference serum samples by comparison with other methods and by the standard addition procedure. The advantages of the ICP-MS method include short time of analysis of the elements mentioned, low detection limit, high precision, and high accuracy. Disadventages include a high risk of contamination due to the presence of some of the elements of interest in the environment, the relatively delicate sample handling, and the high cost of the equipment.     

Reference values for the concentrations of As,Cd, Co,Cr, Cu,Fe, I,Hg, Mn,Mo, Ni,Pb, Se,and Zn in selected human tissues and body fluids

This report attempts to formulate reference ranges of elemental concentrations for 15 trace elements in selected human tissues and body fluids. A set of samples consisting of whole blood, blood serum, urine, milk, liver, and hair were chosen and considered for 15 elements of biological significance: As, Cd, Co, Cr, Cu, F, Fe, I, Hg, Mn, Mo, Ni, Pb, Se, and Zn. The results represent wholly or partially data received from 40 countries of the global regions of Africa, Asia, Europe, North, South, and Central America, Australia, and New Zealand. This survey, even if qualitative, has been useful in demonstrating certain trends of trace-element scenarios around the world. It is of course recognized that both diet and environment exert a strong influence on the distribution pattern of several elements, such as As, Cd, Mn, Pb, Se, and Zn. A limited comparison of the available information on soil status of different countries reflected some interesting associations for elements, such as Mn and Zn. Importantly, this study revealed that only a few countries were in a position to identify a reasonable amount of data on samples requested for this project. Regretably, for a number of countries, any dependable data for even such essential elements as Cu, Fe, and Zn were not available. In view of the nutritional importance of many elements, the time is ripe for concerted efforts by intergovernmental agencies to initiate investigations or commission task forces/projects to generate reliable reference data for selected global regions, which sadly lack data of any kind at present.     

Potential Compounds for Oral Cancer Treatment: Resveratrol,Nimbolide, Lovastatin,Bortezomib, Vorinostat,Berberine, Pterostilbene,Deguelin, Andrographolide,and Colchicine

Oral cancer is one of the main causes of cancer-related deaths in South-Asian countries. There are very limited treatment options available for oral cancer. Research endeavors focused on discovery and development of novel therapies for oral cancer, is necessary to control the ever rising oral cancer related mortalities. We mined the large pool of compounds from the publicly available compound databases, to identify potential therapeutic compounds for oral cancer. Over 84 million compounds were screened for the possible anti-cancer activity by custom build SVM classifier. The molecular targets of the predicted anti-cancer compounds were mined from reliable sources like experimental bioassays studies associated with the compound, and from protein-compound interaction databases. Therapeutic compounds from DrugBank, and a list of natural anti-cancer compounds derived from literature mining of published studies, were used for building partial least squares regression model. The regression model thus built, was used for the estimation of oral cancer specific weights based on the molecular targets. These weights were used to compute scores for screening the predicted anti-cancer compounds for their potential to treat oral cancer. The list of potential compounds was annotated with corresponding physicochemical properties, cancer specific bioactivity evidences, and literature evidences. In all, 288 compounds with the potential to treat oral cancer were identified in the current study. The majority of the compounds in this list are natural products, which are well-tolerated and have minimal side-effects compared to the synthetic counterparts. Some of the potential therapeutic compounds identified in the current study are resveratrol, nimbolide, lovastatin, bortezomib, vorinostat, berberine, pterostilbene, deguelin, andrographolide, and colchicine.     

New Coleoptera records from New Brunswick, Canada: Stenotrachelidae, Oedemeridae, Meloidae, Myceteridae, Boridae, Pythidae, Pyrochroidae, Anthicidae, and Aderidae

We report 19 new species records for the faunal list of Coleoptera in New Brunswick, Canada, six of which are new records for the Maritime provinces, and one of which is new Canadian record. We also provide the first recent records for five additional species in New Brunswick. One new species of Stenotrachelidae, Cephaloon ungulare LeConte, is added to the New Brunswick faunal list. Additional records are provided for Cephaloon lepturides Newman, as well the first recent record of Nematoplus collaris LeConte. Two species of Oedemeridae, Asclera puncticollis (Say) and Asclera ruficollis (Say), are newly reported for New Brunswick, and additional locality and bionomic data are provided for Calopus angustus LeConte and Ditylus caeruleus (Randall). The records of Ditylus caerulus are the first recent records for the province. Three species of Meloidae, Epicauta pestifera Werner, Lytta sayi LeConte, and Meloe augustcollis Say are reported the first time for New Brunswick; Epicauta pestifera is newly recorded in Canada. Lacconotus punctatus LeConte and the family Mycteridaeis newly recorded for New Brunswick. The first recent records of Borus unicolor Say (Boridae) are reported from the province. One new species of Pythidae, Pytho siedlitzi Blair, and the first recent records of Pytho niger Kirby are added to the faunal list of New Brunswick. Three species of Pyrochroidae are newly reported for the province, including Pedilus canaliculatus (LeConte) and Pedilus elegans (Hentz), which are new for the Maritime provinces. Five species of Anthicidae and the first recent record of Anthicus cervinus LaFerté-Sénectére are newly reported for New Brunswick. Anthicus melancholicus LaFerté-Sénectère, Sapintus pubescens (LaFerté-Sénectère), Notoxus bifasciatus (LeConte), and Stereopalpus rufipes Casey are new to the Maritime provinces faunal list. Ambyderus granularis (LeConte) is removed from the faunal list of the province. Three species of Aderidae, Vanonus huronicus Casey, Zonantes fasciatus (Melsheimer), and Zonantes pallidusWerner, are newly recorded for New Brunswick; Zonantes fasciatus and Vanonus huronicus are new for the Maritime provinces' faunal list. Collection data, bionomic data, and distribution maps are presented for all these species.     

Relations of the Al,B, Ba,Br, Ca,Cl, Cu,Fe, K,Li, Mg,Mn, Na,P, S,Si, Sr,and Zn mass fractions to morphometric parameters in pediatric and nonhyperplastic young adult prostate glands

The variation with age of the 18 trace element mass fractions and some histological characteristics of intact prostate glands of 50 subjects aged 0–30 years was investigated by instrumental neutron activation analysis, inductively coupled plasma atomic emission spectrometry, and a quantitative morphometric analysis. Mean values ± standard error of the mean (M ± SΕΜ) for the mass fractions (in milligrams per kilogram wet tissue) of these trace elements in pre-puberty were: Al 28.5 ± 9.0, B 0.40 ± 0.11, Ba 1.48 ± 0.44, Br 10.5 ± 1.5, Ca 241 ± 30, Cl 3,203 ± 278, Cu 3.51 ± 0.89, Fe 33.7 ± 4.1, K 2,364 ± 145, Li 0.020 ± 0.004, Mg 153 ± 23, Mn 0.46 ± 0.06, Na 2,286 ± 130, P 1,391 ± 100, S 1,698 ± 132, Si 62 ± 11, Sr 0.38 ± 0.08, and Zn 27.6 ± 2.3. During puberty and postpuberty, when there is a significant increase in circulating androgens, the mean values were: Al 7.2 ± 1.4, B 0.21 ± 0.05, Ba 0.25 ± 0.06, Br 5.8 ± 1.0, Ca 433 ± 81, Cl 2,314 ± 201, Cu 1.77 ± 0.13, Fe 20.9 ± 1.6, K 2,585 ± 118, Li 0.0088 ± 0.0014, Mg 232 ± 27, Mn 0.34 ± 0.04, Na 1,875 ± 107, P 1,403 ± 98, S 1,673 ± 73, Si 22.2 ± 3.1, Sr 0.22 ± 0.03, and Zn 93.3 ± 8.9. Mean values (M ± SΕΜ) of percent volumes (%) of the stroma, epithelium and lumen in the prostate before puberty were 73.4 ± 2.6, 20.4 ± 1.7, and 4.45 ± 0.94, respectively, versus 46.5 ± 2.5, 38.5 ± 1.9, and 14.9 ± 1.2 during puberty and postpuberty. This work’s results confirm that the Zn mass fraction in prostate tissue is an androgen-dependent parameter. For the first time it has been demonstrated that the glandular lumen is a main pool of Ca, Mg, and Zn accumulation and that the stroma is a main pool of Al, B, Ba, Br, Cl, Cu, Fe, Mn, Na, and Si accumulation in the normal human prostate, for the age range 0–30 years. It was concluded that the Ca, Mg, and Zn binds tightly within the prostatic fluid, because the volume of glandular lumen reflects the volume of prostatic fluid.