中国弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

2011年8月在云南省泸水县进行陆生贝类调查过程中,于蛮云采集到一些弯螺属个体,经鉴定为中国弯螺属一新种,蛮云弯螺新种Sinoennea manyunensis sp.nov.。弯螺属的种类主要分布于东亚和南亚地区;对新种的形态特征进行了详细描述,并与近似种进行了比较、讨论。模式标本保存在昆明医科大学基础医学院细胞生物学与医学遗传学系。     

福建弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

记述了中国弯螺属1新种,即福州弯螺Sinoennea fuzhuouensis sp.nov..弯螺属的种类主要分布于东亚和南亚地区,对新种的形态特征进行了详细描述,并与近似种进行了比较和讨论.     

江西弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

整理江西岩溶地貌陆生贝类标本时,经比对鉴定发现一新种,即石钟山弯螺Sinoennea shizhongshanensis sp.nov.,隶属肺螺亚纲柄眼目扭轴蜗牛科弯螺属。对新种形态特征和栖息环境进行了详细描述,用扫描电镜观察了新种齿舌的细微结构,并与其近似种进行了比较和讨论。     

云南西双版纳热带雨林弯螺属一新种记述(肺螺亚纲,柄眼目,长颈扭轴蜗牛科)

在对云南西双版纳热带雨林陆生软体动物生物多样性调查时,经比对鉴定发现一新种,即勐仑弯螺Sinoennea menglunensis sp.nov.。隶属肺螺亚纲柄眼目长颈扭轴蜗牛科弯螺属。对新种形态特征、栖息环境作了详细记述,并与近似种福州弯螺Sinoennea fuzouensis Zhou,Chen&Guo,2006和弗尔弯螺Sinoennea fargesiana(Heude,1890)进行了比对和讨论。新种模式标本保存在福建出入境检验检疫局国家软体动物检疫鉴定重点实验室和台湾国立高雄大学生命科学系实验室。     

中国弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

笔者在整理福建地区陆生贝类标本时,经比对鉴定发现1新种,即蛹形弯螺Sinoennea pupoidea sp.nov,.隶属肺螺亚纲、柄眼目、扭轴蜗牛科、弯螺属.对新种形态特征、柄息环境作了记述,并对其近似种也进行了讨论.     

中国弯螺属一新种(肺螺亚纲,柄眼目,扭轴蜗牛科)

系统整理和研究了中国弯螺属的种类,共10种,其中1新种即茂兰弯螺Sinoennea maolanensis sp.nov.,弯螺属的种类主要分布于东亚和南亚地区;作者对其已发表的种类进行了整理、甄制,对新种的形态特征进行了详觋细描述,亦与近似种进行了比较、讨论.     

江西弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

在整理江西地区陆生贝类标本时,经比对鉴定发现1新种,龙潭弯螺Sinoennea longtanensis sp.nov.,隶属肺螺亚纲、柄眼目、扭轴蜗牛科、弯螺属。对新种形态特征、栖息环境作了记述,并与其近似种进行讨论。     

浙江弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

记述了浙江弯螺属一新种,即龙塘山弯螺新种Sinoennea longtangshanensis sp.nov.。标本采自浙江省临安市龙塘山清凉峰自然保护区。弯螺属的种类主要分布于东亚和南亚地区,在我国主要分布于长江以南的地区。龙塘山弯螺贝壳小型(壳高4.40 mm,壳宽2.40 mm),壳质薄,有6.5个螺层,胚螺层和第二螺层光滑,无肋纹,壳口具4枚齿。模式标本保存于中国科学院动物研究所。     

贵州环口螺科一新种记述(前鳃亚纲,中腹足目,环口螺科)

在整理贵州省贵阳地区陆生贝类标本时,经鉴定发现1新种,即奇异阿勇螺Arinia mirifica sp.nov..隶属于前鳃亚纲、中腹足目、环口螺科、阿勇螺属.对新种形态特征、栖息环境进行了记述,并对其近似种也进行了讨 论.     

中国云南喇叭螺属一新种(肺螺亚纲,柄眼目,虹蛹螺科)

详细记述了喇叭螺属Boysidia一新种,金平喇叭螺新种Boysidia(Bensonella)jinpingensis sp.nov.。对新种的形态进行了详细描述,并与其近似种进行了对比和讨论。模式标本保存于昆明医科大学细胞生物学与医学遗传学系标本室。     

A NEW SPECIES OF THE GENUS SINOENNER FROM JIANGXI, CHINA ( PULMONATA, STYOMMATOPHORA, STREPTAXIDAE)

在整理江西地区陆生贝类标本时,经比对鉴定发现1新种,龙潭弯螺Sinoennea longtanensis sp.nov.,隶属肺螺亚纲、柄眼目、扭轴蜗牛科、弯螺属.对新种形态特征、栖息环境作了记述,并与其近似种进行讨论.     

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.     

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.     

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.     

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.     

Competitive inhibition and selectivity enhancement by Ca in the uptake of inorganic elements (Be, Na, Mg, K, Ca, Sc, Mn, Co, Zn, Se, Rb, Sr, Y, Zr, Ce, Pm, Gd, Hf) by carrot (Daucus carota cv. U.S. harumakigosun)

We investigated the uptake of inorganic elements (Be, Na, Mg, K, Ca, Sc, Mn, Co, Zn, Se, Rb, Sr, Y, Zr, Ce, Pm, Gd, and Hf) and the effect of Ca on their uptake in carrots (Daucus carota cv. U.S. harumakigosun) by the radioactive multitracer technique. The experimental results suggested that Na, Mg, K, and Rb competed for the functional groups outside the cells in roots with Ca but not for the transporter-binding sites on the plasma membrrane of the root cortex cells. In contrast, Y, Ce, Pm, and Gd competed with Ca for the transporters on the plasma membrane. The selectivity, which was defined as the value obtained by dividing the concentration ratio of an elemental pair, K/Na, Rb/Na, Be/Sr, and Mg/Sr, in the presence of 0.2 and 2 ppm Ca by that of the corresponding elemental pair in the absence of Ca in the solution was estimated. The selectivity of K and Rb in roots was increased in the presence of Ca. The selectivity of Be in roots was not affected, whereas the selectivity of Mg was increased by Ca. These observations suggest that the presence of Ca in the uptake solution enhances the selectivity in the uptake of metabolically important elements against unwanted elements.