松花江三湖保护区

吉林省松花江三湖保护区位于吉林省中南部,地理位置为:东经126°35′～128°02′,北纬42°06′～43°51′。行政区域包括吉林市的丰满区、蛟河市、桦甸市、白山市的靖宇县和抚松县,共33个乡(镇)和一个街道。南北长194公里,东西宽103公里,区域总面     

色虫掠影——柘荣普查生态小记

<正>柘荣县,古名柘洋,又称"柳城",其位置介于东经119°4 3'~12 0°0 4'(119°897'),北纬27°05'~27°19'(27°209')之间,与同为闽东地区的福安市、福鼎市、霞浦县以及浙江省温州市泰顺县毗邻。境内峰峦起伏,山地面积509.16平方千米,占全县总面积的94.6%,最高点为太姥山脉主峰东狮山顶点海拔1480.5米,最低点为英山乡下清水坑海拔仅78.8米,城     

内蒙古哈素海发现池鹭繁殖群

正池鹭(Ardeola bacchus)在内蒙古夏季见于呼伦贝尔市、赤峰市克什克腾旗和敖汉旗、呼和浩特市哈素海、包头和鄂尔多斯市黄河沿岸、巴彦淖尔市乌梁素海,但未见繁殖记录的报道。哈素海(E 110°56'~111°01',N 40°34'~40°38')位于大青山南部土默川平原北端,在呼和浩特市区向西70km处的土默特左旗境内,是黄河改道而遗留的椭圆形牛轭湖,属于大黑河水系的外流性淡水湖泊,主要水源来自     

丰饶的福建中药资源

<正>地理概况福建地处我国东南沿海,介于东经115°50'~120°44',北纬23°31'~28°19'之间。东北邻浙江,西、西北接江西,西南连广东,东南隔台湾海峡与台湾省相望。全省地跨中亚热带和南亚热带两个自然地理带。全省土地面积为12.14万平方千米,约占全国土地总面积的1.3%。海岸线曲折,全省共有岛屿1 500多个。陆地海岸线全长3 324千米,仅次于广东,居全国第二位;海岸线曲折率为1∶5.7,曲折程度居我国沿海各省份之首位。地势西北高,东南低,横断面略呈马鞍     

中华蟾蜍应对不同方向捕食者的逃避策略

模拟不同方向袭击的捕食者对中华蟾蜍进行攻击,研究中华蟾蜍的逃避策略。研究结果显示:中华蟾蜍以静止不动的方式应对水平方向来袭的捕食者;当捕食者从空中(以45°或90°方向)来袭时,中华蟾蜍以连续跳跃的方式逃避敌害。     

四川老君山国家级自然保护区红外相机监测取得丰硕成果

<正>开展野生动物监测是自然保护区的一项基本职责。掌握目标物种及其主要伴生动物的种群状况对于加强野生动物的保护与管理具有重要意义。四川老君山国家级自然保护区(103°57'~104°04'E,28°39'~28°43'N)位于四川省宜宾市屏山县境内,主要保护对象为四川山鹧鸪Arborophila rufipectus等珍稀雉科鸟类及其栖息地,海拔范围900~2009 m,总面积约3500 hm2。2013年4月—2014年3月,保护区管理局联合乐山师范学院西南山地濒危鸟类保护四川省高校重点实验室,利用红外相机对四川山鹧鸪及其主要伴生动物进行了为期近1年的监测,取得丰硕成果。     

长白山自然保护区面临的问题及发展途径

1 自然概况长白山保护区是1960年经吉林省人民委员会决定建立的,1980年1月加入联合国教科文组织“人与生物圈计划”的国际生物圈保护区网,1986年经国务院批准,成立国家级自然保护区。保护区总面积196465公顷,其中有林地面积168918.5公顷,占全区总面积的86％,活立木蓄积4400万立方米。地理位置处于北纬41°41′49″～42°25′18″,东经127°42′55″～128°16′48″,全区南北最大长度80公里,东西最大宽度42公里。长白山保护区是以著名的火山口湖——长白山     

几种脊椎动物宽频带心电图波形与心电向量环特点的比较

对小鼠、家鸽、蟾蜍、鲫鱼4种脊椎动物宽频带心电图Ⅱ导联的波形特点及QRS额面心电向量环的位置、形态特点进行了比较研究。结果发现,(1)宽频带心电图Ⅱ导联QRS波群小鼠、蟾蜍、鲫鱼QRS波群的主波均向上,而家鸽的主波向下;(2)QRS波群时程(ms)小鼠88±09,家鸽365±14,蟾蜍790±110,鲫鱼283±57;(3)QRS心电向量环的位置家鸽的位于-90°～-180°象限内,这是家鸽心电图Ⅱ导联QRS波群主波向下的根本原因;小鼠、蟾蜍、鲫鱼的均位于0°～90°象限内,与它们的QRS波群主波向上相一致;(4)QRS心电向量环的形状;小鼠的QRS向量环较其它3种动物的要大,蟾蜍的最小。鲫鱼的不规则,有的呈三角形,有的呈“8”字形,还有的呈半圆形,这是导致鲫鱼的QRS波群出现较多切迹和扭挫的原因。     

新疆有花背蟾蜍分布的再证实

2007年6～7月在新疆两栖类考察过程中,于乌鲁木齐北京五家渠市安宁渠镇附近(海拔1655 ft,N:44°01.705',E:87°30.763')采集到两种蟾蜍标本.     

长白山区野生植物色素的开发与利用

长白山区位于我国东北地区的吉林省东部,其地理位置为北纬40°52′～44°30′,东经125°2′～131°17′。东西长509.5公里,南北宽406.5公里,总面积约9.5万平方公里。境内包括吉林省东部和东南部的延边朝鲜族自治州、通化地区和浑江地区的二十二个市、县。地域广阔,海拔差异较大,最高峰为白云峰,海拔可达2691米。动植物资源极其丰富。野生植     

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.     

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.     

The Effect of Age and Gender on Al, B, Ba, Ca, Cu, Fe, K, Li, Mg, Mn, Na, P, S, Sr, V, and Zn Contents in Rib Bone of Healthy Humans

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.     

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.     

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.     

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.