The University Thought - Publication in Natural Sciences最新文献_第9页

MONITORING BUTTERFLY BIODIVERSITY ON PRIME BUTTERFLY AREA Avala Mt. (Serbia) BY THE TRANSECT METHOD (Pollard Walks) IN THE YEAR 2017 2017年用样带法(Pollard Walks)对塞尔维亚阿瓦拉山主要蝴蝶区蝴蝶生物多样性进行了监测

The University Thought - Publication in Natural Sciences Pub Date : 2017-09-07 DOI: 10.5937/UNIVTHO7-16037

P. Jakšić, F. Janžekovič, Tina Klenovšek

{"title":"MONITORING BUTTERFLY BIODIVERSITY ON PRIME BUTTERFLY AREA Avala Mt. (Serbia) BY THE TRANSECT METHOD (Pollard Walks) IN THE YEAR 2017","authors":"P. Jakšić, F. Janžekovič, Tina Klenovšek","doi":"10.5937/UNIVTHO7-16037","DOIUrl":"https://doi.org/10.5937/UNIVTHO7-16037","url":null,"abstract":"An inventory of butterfly fauna was carried out in 2017 within the north-western part of the Prime Butterfly Area “Avala Mt.”. Butterfly fauna was surveyed with a transect method from March until October within three sectors with different land use and plant succession. We evaluated the sectors by butterfly species richness, abundance of individuals, species accumulation curves, Shannon index, ecological and zoogeographical characteristics. A total of 1147 individuals were recorded, representing 50 species. Three new species (Pieris mannii (Mayer, 1851), Satyrium acaciae (Fabricius, 1787) and Kirinia roxelana (Cramer, 1777)) for the fauna of Avala Mt. were discovered that now counts 114 species. Abandoned dry grasslands in the process of secondary succession supported the highest number of species and individuals. Nevertheless, the observed butterfly species on Avala Mt. were almost equally characteristic for grasslands (38.4%) and forests (34.3%). In conclusion, butterfly biodiversity on Avala Mt. depends on habitat diversity, which is a combination of climax forest vegetation as well as formerly agricultural landscapes in different stages of secondary succession.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43035134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

REMOTE SENSING MACHINE LEARNING ALGORITHMS IN ENVIRONMENTAL STRESS DETECTION - CASE STUDY OF PAN-EUROPEAN SOUTH SECTION OF CORRIDOR 10 IN SERBIA 环境应力检测中的遥感机器学习算法——以塞尔维亚10号走廊泛欧南段为例

The University Thought - Publication in Natural Sciences Pub Date : 2017-09-07 DOI: 10.5937/UNIVTHO7-14957

Ivan Potić, M. Potić

引用次数: 3

STARK WIDTHS OF Sc IV SPECTRAL LINES WITHIN 4s-4p TRANSITION ARRAY s-4p跃迁阵列中Sc - IV谱线的宽度

The University Thought - Publication in Natural Sciences Pub Date : 2017-09-07 DOI: 10.5937/univtho7-15815

M. Dimitrijević

引用次数: 2

GAM MODEL AND TOURIST VALORIZATION OF GEOSITES PLOČNIK Gam模型与地质遗址旅游价值评价ploČnik

The University Thought - Publication in Natural Sciences Pub Date : 2017-07-18 DOI: 10.5937/univtho7-14161

M. Stankovic, Stevan Milovanović

引用次数: 0

Determination of accelerated factors in gradient descent iterations based on Taylor's series 基于泰勒级数的梯度下降迭代加速因子的确定

The University Thought - Publication in Natural Sciences Pub Date : 2017-07-17 DOI: 10.5937/UNIVTHO7-14337

Milena J. Petrović, Nataša Kontrec, S. Panic

引用次数: 3

RESOLVING SYSTEMS OF NONLINEAR INTEGRAL EQUATIONS VIA C-CLASS FUNCTIONS 用c类函数求解非线性积分方程组

The University Thought - Publication in Natural Sciences Pub Date : 2017-07-09 DOI: 10.5937/UNIVTHO7-14709

L. Paunović

引用次数: 1

SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION OF LITHIUM SALTS OF COPPER(II) AND NICKEL(II) COMPLEXES WITH 1,3-PROPANEDIAMINE-N,N,N’,N’-TETRAACETATE 铜（II）和镍（II）与1,3-丙二胺-N，N，N'，N'-四乙酸盐配合物锂盐的合成及光谱表征

The University Thought - Publication in Natural Sciences Pub Date : 2017-06-18 DOI: 10.5937/univtho7-13688

N. Drašković, D. Gurešić

引用次数: 0

Development and application of potentiometric stripping analysis 电位溶出分析的发展与应用

The University Thought - Publication in Natural Sciences Pub Date : 2017-01-01 DOI: 10.5937/UNIVTHO7-13649

Ljiljana Babincev, D. Gurešić, R. Simonović

{"title":"Development and application of potentiometric stripping analysis","authors":"Ljiljana Babincev, D. Gurešić, R. Simonović","doi":"10.5937/UNIVTHO7-13649","DOIUrl":"https://doi.org/10.5937/UNIVTHO7-13649","url":null,"abstract":"This paper focuses on the voltammetric determination of lead, cadmium and zinc in water. Two ways of determining were investigated: individually and all three metals simultaneously. The experiments were performed using the Potentiometric Stripping Analysis (PSA). Determination of metals in real samples was preceded by preliminary tests. Preliminary investigations were performed in order to determine the optimal conditions of measurement. It was concluded that the process of determining was for most part influenced by: pH, time of metals extraction, stirring rate of the solution and the thickness of the mercury layer on the working electrode. The s mallest concentrations of metals which can be deter mined using this method are: for lead 22.48 μg dm -3 , for cadmium 16.23 μg dm -3 and for zinc 18.75 μg dm -3 . The obtained results deviated from the actual 1.12% for lead, 1.91% for cadmium and 1.81% for zinc. All tests (individually and simultaneously) were conducted from model solution with concentration as follows: 44.96 μg dm -3 for lead, 32.47 μg dm -3 for cadmium and 37.50 μg dm -3 for zinc. The results of individual measurements deviated by 1.02% lead, 1.90% for cadmium and 1.89% for zinc. Simultaneously the contents were lower than real for: −4.58% for lead, cadmium for −1.91% and −1.89% for zinc. For the conditions determined, except for lead, deviations did not exceed ±2% . This indicates that Potentiometric Stripping Analysis is a good way of individual and simultaneous determination of lead, cadmium and zinc and for determination of their concentrations in water (river and groundwater).","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"7 1","pages":"17-23"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71153188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An analysis of factors affecting the high radon concentration in different types of houses 不同类型住宅高氡影响因素分析

The University Thought - Publication in Natural Sciences Pub Date : 2017-01-01 DOI: 10.5937/univtho7-13753

L. Gulan

引用次数: 1

The circadian clock and human athletic performance 生物钟和人类运动表现

The University Thought - Publication in Natural Sciences Pub Date : 2017-01-01 DOI: 10.5937/UNIVTHO7-13650

B. Vitosevic

{"title":"The circadian clock and human athletic performance","authors":"B. Vitosevic","doi":"10.5937/UNIVTHO7-13650","DOIUrl":"https://doi.org/10.5937/UNIVTHO7-13650","url":null,"abstract":"The importance of circadian clock in managing of key muscle physiological processes, and therefore the impact on athletic performance is well studied. Specifically chronobiology examines the mechanisms of the biological clock and the consequences of disrupting its rhythm. Although a body of literature indicates that the peak performance of notable indicators of athletic performance exerts mainly in the afternoon and evening hours which is attributed to increased temperature of the body, certain variables such as vigilance, alertness and cognitive domains can influence the shift of the peak performance during the day. In addition, athletes face issues of desynchronization of their circadian rhythm during frequent transcontinental travels, since their performance is reduced and the adjustment of the biological clock requires some recommendations in the training process and behavioral approach. This review focuses on some current studies on endogenous and exogenous factors which affect the circadian rhythm in order to achieve better sport results, evaluation of the impact chronotype through chronometric tests and revising more valuable determinants of sport performance, as well as the application of new mathematical models in individual treatment of recovery of athletes in the phase of resynchronization.","PeriodicalId":22896,"journal":{"name":"The University Thought - Publication in Natural Sciences","volume":"7 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71153239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6