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正2014年4月7至25日,在湖北省武汉市江夏区汤逊湖千亩塘(30°26'48″N,114°24'27″E)观测到长嘴半蹼鹬(Limnodromus scolopaceus)1只,隶属于鸻形目鹬科半蹼鹬属。该鹬被发现于一大型荷塘内,同域分布有扇尾沙锥(Gallinago gallinago)、林鹬(Tringa glareola)、鹤鹬(T.erythropus)、泽鹬(T.stagnatilis)等鹬科鸟种。借助蔡司60倍单筒望远镜观察,并拍摄下图片及视频后发现,该鹬中等体型,与扇尾沙锥近似,但比鹤鹬小。具长而粗的嘴,全嘴色深。白色眉纹明显。上体体羽深褐色,具浅色羽缘。尾上覆羽具横斑。下体色浅,胸 相似文献
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2007年6月11日,在陕西秦岭太白山南坡海拔3150m的药王殿(N33°55′40″,E107°46′02″)进行鸟类调查时,捕获1只雌性成体栗背岩鹨(Prunella immaculata)。其主要特征描述如下:额苍白,头顶深灰色,头侧、颈侧、颏和胸灰色。背、肩、下背暗栗色。尾暗灰褐色,两翅暗褐色。腹至尾下覆羽栗红色。虹膜外圈橙色,内圈黄色;嘴黑色;脚肉色。量衡度为体重19g,体长138.5mm,嘴峰11mm,翅76mm,尾56mm,跗23mm。标本保存于陕西省动物研究所,采集号:太白山270。栖息地为稀疏的太白红杉(Larixchinensis)林,林下着生高山草甸和灌丛。该鸟具明显的孵卵斑,解剖… 相似文献
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正采用夜鹰HD-SG-009红外相机对宁夏泾源县六盘山国家级自然保护区的哺乳动物及地面活动的鸟类进行监测期间,于2018年6月10日在二龙河林场安放的红外相机(35°16′24.35″N,106°20′56.84″E,海拔2 535 m)拍摄到一种雀形目鸟类(图1a)。该鸟除翅和尾羽黑褐色外,其余全为橄榄褐色;嘴橘黄色,眼圈黄色,腿和爪暗肉色。2019年3月9日在六盘山国家级自然保护区(35°24′19.38″N,106°23′13.08″E,海拔1 782 m)拍摄到一种雀形目鸟类(图1b)。其额、头顶、枕、眼先、眼周均为黑色;耳羽灰褐或棕褐色,背、肩、腰至尾上覆羽土 相似文献
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2020年7月8日6:00时,在山东省泰安市泰山西麓樱桃园山谷间的溪流边(117°03′01″E,36°13′26″N,海拔320 m),记录到1只秧鸡,立于灌丛中,看见有人便快速隐匿于溪流边草丛中,依据其体型中等,头颈及上胸红褐色,颏部、喉部偏白色,背部、两翼、尾羽橄榄褐色,腹部、两胁、尾下覆羽具黑色白色横斑,虹膜鲜红色,喙铅灰色,跗跖灰绿色等特征,参考《中国鸟类图鉴》(赵欣如2018)鉴定为白喉斑秧鸡(Rallina eurizonoides)雄鸟。当日16:10时,在同一地点再次记录到1只。 相似文献
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2020年10月25日,在浙江省玉环市玉环漩门湾湿地三期围垦区内发现1只活动于沼泽的褐色滨鹬,地理坐标121°16′52.35″E,28°9′14.17″N。经核对《中国鸟类野外手册》(约翰·马敬能等,2000)和《中国海洋与湿地鸟类》(马志军等,2018),确认是斑胸滨鹬Calidris melanotos(图1)。该鸟胸部具清晰纵纹,胸部的黑色细纵纹与腹部分界清晰;胁部无矛状斑,可区分于尖尾滨鹬C.acuminata;上下喙基部均为黄色,可区分于繁殖后期的长趾滨鹬C.subminuta。进一步查阅资料,在《浙江动物志(鸟类)》(诸葛阳等,1990)、《浙江鸟类名录更新》(陈水华等,2012)、《中国鸟类分类与分布名录(第三版)》(郑光美,2017)中均没有斑胸滨鹬的浙江分布记载。2021年5月2日和8日,分别在南湖湿地和玉环漩门湾湿地观测拍摄到1只斑胸滨鹬。因此,确认其为浙江省鸟类新记录。 相似文献
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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
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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
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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
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Vladimir Zaichick Sofia Zaichick Vasilii Karandashev Sergey Nosenko 《Biological trace element research》2009,129(1-3):107-115
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
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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
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G. V. Iyengar 《Biological trace element research》1987,12(1):263-295
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
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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. 相似文献