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1.
记山西榆社晚新生代鼠科化石新属种   总被引:4,自引:2,他引:2  
本文描述了山西榆社盆地晚新生代鼠科化石中的新属种:Huaxiamys primitivus gen. et sp. nov., Huaxiamys downsi gen. et sp. nov., Micromys tedfordi sp. nov., Apodemus qiui sp. nov., Apodemus zhangwagouensis sp. nov.,  相似文献   

2.
辽西义县组细蜂总科(昆虫纲,膜翅目)昆虫化石   总被引:4,自引:0,他引:4  
描述了产自辽宁北票上园地区黄半吉沟上株罗统义县组下部细蜂总科(Proctotrupoidea)昆虫化石10属12种,其中8属12新种,这些化石分属于3科,其中Gurvanotrupes stolidus sp.nov.,Gurvanotrupes exiguus sp.nov.,Liaoserphus perarus gen.et sp.no.,alloserphus saxosus gen.et sp.nov.,Scalprogaster fossilis gen.et sp.nov.,steleoserphus beipiaoensis gen.et sp.nov.,Saucrotrupes decorosus gen.et sp.nov和Ocnoserbphous sculptus gen.et sp.nov.归入细蜂科(Serphidae=Proctotrupidae);Protocyrtus validus sp.nov.和Spherogaster cornoata gen.et sp,nov。归入柄腹细蜂科(heloridae);Liaoropronia leonina gen.et sp.nov和Liaoropronia regia gen.et sp.nov.归入窄腹细蜂科(Roproniidae),对我们中生代细蜂总科化石的研究状况作了回顾。  相似文献   

3.
描述哈格鸣螽科化石2新属7新种:Circulaboilu aureus gen.et sp.nov.,Circulaboilus amoenus gen.et sp.nov.,Furcaboilus excelsus gen.et sp.nov.,Aboilus stratosus sp.nov.,Aboilus cornutus sp.nov.,Pseudohagala shihi sp.nov.,Bacharaboilus jurassicus sp.nov..标本采自于内蒙古宁城道虎沟中侏罗世九龙山组地层和辽宁西部晚侏罗世义县组地层,现保存于首都师范大学生命科学学院.  相似文献   

4.
邓占球  孔磊 《古生物学报》2005,44(2):283-295
描述中三叠统青岩组化石海绵3 新属,即硬海绵类:Cohartmanina gen. nov.;六射海绵类:Para hexactinoderma gen. nov.和Micraulospongia gen. nov.,及所属种Cahartmanina bangtoupoensis(Stiller, 1998),Parahexactinoderma leidapoensis gen. et sp. nov.,Micraulospongia qingyanenis gen.et sp. nov.。  相似文献   

5.
试论织金壳科Zhijinitidae的构造、亲缘、分类及其地层意义   总被引:4,自引:0,他引:4  
本文叙述了贵州织金、新疆乌什两地区,早寒武世梅树村阶和筇竹寺阶的Zhijinitidae科的3个属Zhijinites Qian 1978,Cambroclavus Mambetov 1979,Parazhijinites gen.et sp.nov.和7个种 Zhijinites longistriatus Qian,Z.minutus Qian,Z.panduriformis sp.nov.,Z.cordiformis sp.nov.,Z.triangularis sp.nov.,Cambroclavus paradoxus sp.nov.,Parazhijinites quizhouensis gen.et sp.nov.的形态特征和应使用的构造术  相似文献   

6.
飞虱科三新属四新种 (同翅目:蜡蝉总科)   总被引:1,自引:1,他引:0  
记述飞虱科3新属,即奇臀飞虱属Miranus Chen et Ding,gen.nov.,东洋飞虱属Orientoya Chen et Ding,gen.nov.,和凹缘飞属属Aoyuanus Ding et Chen,gen.nov.,4新种为葛氏奇臀飞虱M.kuohi Chen et Li,sp.nov.、环鳞奇臀飞虱M.circus Chen et Ding,sp.nov.、东洋飞虱Orientoya orientalis Chen et Ding,sp.nov.和叉茎凹缘飞属Aoyuanus furcatus Ding et Chen,sp.nov.,及1新组合,片刺奇臀飞虱M.varians(Kuoh),comb.nov.。模式标本分别保存于贵州大学昆虫研究所(GZU)和南京农业大学植物保护系(NJAU)。  相似文献   

7.
本文首次报道了贵州寒武系黔东统都匀阶早期杷榔组宏观藻类化石,包括4属4种藻类,其中2未定种,1新属,1新种,即江古宽带藻(新属、新种)Latizonuphyton jiangguensis gen.et sp.nov.,球状玛拉利亚藻Moraniaglobosa Walcott,1919,中华细丝藻(未定种)Sinocylindra sp.和?约克那斯藻(未定种)?Yuknessia sp.。其中,Latizonuphyton jiangguensis gen.et sp.nov.最为丰富。该组合中大多分子见于澄江、凯里和布尔吉斯等生物群,具有全球广泛分布的特征。  相似文献   

8.
滇东南早泥盆世无颌类   总被引:4,自引:3,他引:1  
文中记述了华南鱼类两个新属,即 Gantarostrataspis gengi gen. et sp. nov. 和 Gumuaspis rostrata gen. et sp. nov.,同时对含鱼层的时代进行了讨论.  相似文献   

9.
河北蔚县中侏罗世苔藓植物   总被引:6,自引:1,他引:5  
记述了河北蔚县中侏罗统乔儿涧组的8种苔藓植物化石:Hepaticites elegans sp. nov., H. hebeiensis sp. nov., H. sp., cf. H. solenotus, Riccardiopsis hsüi gen. et sp. nov., Metzgerites yuxianensis gen. et sp. nov., M. exhibens g1n. et sp. nov., Marchantiolites sulcatus sp. nov.。通过扫描电镜和显微镜对这些化石的形态特征和细胞构造的观察和研究,发现有些属种与现代苔纲的某些科属具有一定的亲缘关系;此外对本区苔藓植物化石的生态型、古地理、古气候等问题也作了初步探讨。  相似文献   

10.
蜘蛛寄生革螨1新属2新种(蜱螨亚纲:巨刺螨科)   总被引:1,自引:0,他引:1  
马立名 《蛛形学报》2002,11(1):8-13
报道巨刺螨科Macronyssidae 1新属2新种:广西蛛刺螨 Arachnyssus guang.riensis gen.et sp. nov.和虎纹蛛刺螨 Arachnyssus huwenae gen.et sp. nov., 均寄生于虎纹捕鸟蛛 Ormthoctonus huwena Wang et al., 1993。  相似文献   

11.
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.  相似文献   

12.
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.  相似文献   

13.
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.  相似文献   

14.
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.  相似文献   

15.
The unitary conductances and permeability sequences of the rat connexin40 (rCx40) gap junction channels to seven monovalent cations and anions were studied in rCx40-transfected neuroblastoma 2A (N2A) cell pairs using the dual whole cell recording technique. Chloride salt cation substitutions (115 mM principal salt) resulted in the following junctional maximal single channel current-voltage relationship slope conductances (γj in pS): CsCl (153), RbCl (148), KCl (142), NaCl (115), LiCl (86), TMACl (71), TEACl (63). Reversible block of the rCx40 channel was observed with TBA. Potassium anion salt γj are: Kglutamate (160), Kacetate (160), Kaspartate (158), KNO3 (157), KF (148), KCl (142), and KBr (132). Ion selectivity was verified by measuring reversal potentials for current in rCx40 gap junction channels with asymmetric salt solutions in the two electrodes and using the Goldman-Hodgkin-Katz equation to calculate relative permeabilities. The permeabilities relative to Li+ are: Cs+ (1.38), Rb+ (1.32), K+ (1.31), Na+ (1.16), TMA+ (0.53), TEA+ (0.45), TBA+ (0.03), Cl (0.19), glutamate (0.04), and NO3− (0.14), assuming that the monovalent anions permeate the channel by forming ion pairs with permeant monovalent cations within the pore thereby causing proportionate decreases in the channel conductance. This hypothesis can account for why the predicted increasing conductances with increasing ion mobilities in an essentially aqueous channel were not observed for anions in the rCx40 channel. The rCx40 effective channel radius is estimated to be 6.6 Å from a theoretical fit of the relationship of relative permeability and cation radius.  相似文献   

16.
17.
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.  相似文献   

18.
The effect of age and gender on major, minor, and trace element contents in the intact rib bone of 80 relatively healthy 15–55-year-old women and men was investigated. Contents or upper limit of contents of 16 chemical elements in the rib bone were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). Mean values (M?±?SΕΜ) for the mass fraction of Ba, Ca, Cu, Fe, K, Li, Mg, Na, P, S, Sr, and Zn (milligram per kilogram of dry bone) were as follows: 2.54?±?0.16, 171,400?±?4,050, 1.35?±?0.22, 140?±?11, 1,874?±?71, 0.049?±?0.011, 2,139?±?38, 5,378?±?88, 75,140?±?1,660, 1,881?±?51, 291?±?20, and 92.8?±?1.5, respectively. The upper limits of contents of Al, B, Mn, and V were <7.20, <0.65, <0.36, and <0.03, respectively. Statistically significant tendency for the Ca, Mg, and P content to decrease with age was found in the human rib bone, regardless of gender. The mass fraction of Fe in the male rib bone increases with age. It was shown that higher Ca, Mg, Na, P, and Sr mass fractions as well as lower Fe content were typical of female ribs as compared to those in male ribs.  相似文献   

19.
Nine blood group systems of goats were identified using 12 caprine reagents produced by absorption of alloimmune antisera. The caprine C blood group system, possibly homologous to the ovine C blood group system, was characterized by two reagents and shown to be controlled by three alleles,C 12,C 25, andC . A more complex blood group system of goats, designated G, was identified using three reagents and shown to be controlled by six codominant alleles (G 10.19.20,G 10.19,G 10.20,G 10,G 19,G 20) and a recessive allele (G ). A further seven one-factor two-allelic systems were identified by seven reagents. The nine genetic systems provided exclusion probabilities of 0.479, 0.492, 0.548, and 0.572 in Australian Angora, Dairy, Cashmere, and Texan Angora goat breeds, respectively. This work was supported by a grant from the Australian Stud Book, Alison Road, Randwick, New South Wales 2031, Australia.  相似文献   

20.
《Ibis》1894,36(3):447-460
  相似文献   

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