Glasnik Sumarskog Fakulteta Univerzitet u Beogradu最新文献_第9页

Effect of bending pattern on finger joint bending strength. 弯曲方式对手指关节抗弯强度的影响。

Glasnik Sumarskog Fakulteta Univerzitet u Beogradu Pub Date : 2012-01-01 DOI: 10.2298/GSF1205073D

I. Džinčić, T. Palija, D. Pavlovic

引用次数: 0

Structural and productive-developmental characteristics of white willow plantations of different density on humogley in Donji Srem 东济沼泽不同密度白柳人工林结构及生产发育特征

Glasnik Sumarskog Fakulteta Univerzitet u Beogradu Pub Date : 2012-01-01 DOI: 10.2298/GSF1206007A

S. Andrašev, M. Vuckovic, M. Bobinac, P. Ivanišević, B. Stajić

{"title":"Structural and productive-developmental characteristics of white willow plantations of different density on humogley in Donji Srem","authors":"S. Andrašev, M. Vuckovic, M. Bobinac, P. Ivanišević, B. Stajić","doi":"10.2298/GSF1206007A","DOIUrl":"https://doi.org/10.2298/GSF1206007A","url":null,"abstract":"The study was conducted in two plantations of white willow (Salix alba L.) in Donji Srem on the humogley soil type (hydromorphic black soil), which belongs to a narrow-leaved ash forest with remote sedge (Carici remotae - Fraxinetum angustifoliae Jov. et Tom., 1979). The plantations are located in the same depression. The SP (sample plot)-1 plantation is 21 years old with a 6×6 m planting spacing, and the SP-2 plantation is 27 years old with a 3×3m planting spacing. Elements of stem growth in the SP-1 plantation showed that with the white willow planting spacing of 6×6 m and a planned 25-year production cycle it is possible to obtain about 250 m3•ha-1 of timber volume, with an 80% net share of technical wood and a 20 % share of pulp wood. The plantation in SP-2 is at the age, which is well above the optimum age in terms of rational management, and the total volume at the age of 27 years is about 300 m3•ha-1, with a 53.7% net share of technical wood and a 46.3% share of pulpwood. [Projekat Ministarstva nauke Republike Srbije, br. 43007: Istraživanje klimatskih promena na životnu sredinu: pracenje uticaja, adaptacija i ublažavanje]","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"7-28"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68303547","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

Soil organic carbon storage in moutain grasslands of the Lake Plateau at Mt. Durmitor in Montenegro 黑山杜米特山湖高原山地草原土壤有机碳储量研究

Glasnik Sumarskog Fakulteta Univerzitet u Beogradu Pub Date : 2012-01-01 DOI: 10.2298/GSF1206113K

R. Kadović, S. Belanović, D. Obratov-Petković, I. Bjedov, V. Perović, M. Andjelic, M. Knežević, N. Ranković

引用次数: 4

Modelling of base flows by analysing the streamflow hydrograph 通过分析水流曲线来模拟基流

Glasnik Sumarskog Fakulteta Univerzitet u Beogradu Pub Date : 2012-01-01 DOI: 10.2298/gsf1206071d

Vesna Djukic, V. Mihailović

{"title":"Modelling of base flows by analysing the streamflow hydrograph","authors":"Vesna Djukic, V. Mihailović","doi":"10.2298/gsf1206071d","DOIUrl":"https://doi.org/10.2298/gsf1206071d","url":null,"abstract":"During dry periods, the flow of medium and small streams is significantly reduced and equal to groundwater flow. Since the base flows provide information about aquifer characteristics and retention characteristics of a basin, the possibilities of analysis and simulation of base flows gain importance under the conditions of intensive water use and the increasing demand for adequate water quality protection. In this paper, a model was established and used for the description of the principles governing the changes of base runoff on the basis of a streamflow hydrograph registered at the outlet of the basin on the example of the Kolubara basin up to the „Valjevo” profile. Since the amount of base runoff from a basin cannot be measured, the results of base flows obtained using the local minimum method were adopted as the criterion for the comparison of the modelled values of base runoffs. The created model was applied for making simulations of the base runoff hydrograph during three characteristic years (rainy 1970, average 1985, and dry 1990). Deviations between the base flow values obtained using the established model and by applying the local minimum method are acceptable from the standpoint of general hydrological accuracy.","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"71-86"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68304087","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

Formation of useful waters on the Stara Planina Mountain, in the area Visok Kraj. 在Visok Kraj地区的Stara Planina山上形成有用的水。

Glasnik Sumarskog Fakulteta Univerzitet u Beogradu Pub Date : 2012-01-01 DOI: 10.2298/GSF110919001N

Z. Nikić, L. Letic, V. Nikolić

{"title":"Formation of useful waters on the Stara Planina Mountain, in the area Visok Kraj.","authors":"Z. Nikić, L. Letic, V. Nikolić","doi":"10.2298/GSF110919001N","DOIUrl":"https://doi.org/10.2298/GSF110919001N","url":null,"abstract":"Formation and discharge of useful waters was studied on southwestern slopes of the Stara Planina Mountain, in the area Visok Kraj that is the typical hilly-mountainous region in East Serbia. The catchment’s area of Dojkinacka River was chosen due to numerous and specific edaphic properties. Pump forests (association: Fagetum moesiacea serbicum Rud.) dominate here and were mostly developed on slightly acidic, humus-silicate or on acidic brownish soil. Soils are of a range of depths and development of pedogenetic processes. The aim of this work is to highlight elements that have pronounced influence on supply of useful and small water bodies in the catchment area of Dojkinacka River. Complex relations between geological setting, climate conditions, pedological characteristics, hydrological and hydrogeological conditions, forest vegetation etc. were analyzed. Elements that are significant for proper evaluation of useful water or small domains supply were in this case detected through water balance methods, geological mapping and tracking. It was deduced that the disagreement of topographic and hydrological catchment’s area of Dojkinacka River represents the significant element which should be taken into consideration in order to determine the real reserves of useful, i.e. small water domains.","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"139-156"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68303011","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

Tree species richness as the element of structure and diversity in mixed stands of beech and valuable broadleaves. 树种丰富度作为山毛榉阔叶混交林结构和多样性的要素。

Glasnik Sumarskog Fakulteta Univerzitet u Beogradu Pub Date : 2012-01-01 DOI: 10.2298/GSF111017001S

B. Stajić, M. Vuckovic

{"title":"Tree species richness as the element of structure and diversity in mixed stands of beech and valuable broadleaves.","authors":"B. Stajić, M. Vuckovic","doi":"10.2298/GSF111017001S","DOIUrl":"https://doi.org/10.2298/GSF111017001S","url":null,"abstract":"In our forest science and forest operations, the tree species richness and diversity of woody species in forest stands are most often evaluated based on the total number of tree species, which is a methodologically partly inadequate approach. For this reason, the quantification and the evaluation of diversity of woody species in mixed forests of beech with valuable broadleaves in the area of the National Park „Đerdap” were analyzed by five different indices of tree species richness: number of species (S index), two indices of the species richness (R1 and R2), expected number of species in the sample with equal numbers of trees (E(S84)), and expected number of species in the sample with equal areas (E(S0,25ha)). The results showed that the level of woody species diversity in forest stands depended on the applied index characterizing the tree species richness. It was concluded that the tree species richness and diversity were the highest in the stands of ecological unit B (E(S84)=8.6 species) and in the stands of ecological unit G (E(S0,25ha)=9.4 species), and they were the lowest in the stands of ecological unit V (E(S84)=5.8 species, E(S0,25ha)=5.5 species).","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"157-172"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68303018","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

Availability of some trace elements (Pb, Cd, Cu and Zn) in relation to the properties of pasture soils in Stara Planina mountain 一些微量元素(Pb、Cd、Cu和Zn)的有效性与Stara Planina山草地土壤性质的关系

Glasnik Sumarskog Fakulteta Univerzitet u Beogradu Pub Date : 2012-01-01 DOI: 10.2298/GSF1206041B

S. Belanović, Dragan Čakmak, R. Kadović, J. Beloica, V. Perović, Nuri Alnaass, E. Saljnikov

{"title":"Availability of some trace elements (Pb, Cd, Cu and Zn) in relation to the properties of pasture soils in Stara Planina mountain","authors":"S. Belanović, Dragan Čakmak, R. Kadović, J. Beloica, V. Perović, Nuri Alnaass, E. Saljnikov","doi":"10.2298/GSF1206041B","DOIUrl":"https://doi.org/10.2298/GSF1206041B","url":null,"abstract":"The research presented in this paper was aimed at better understanding of the relationship between soil properties and the availability of trace elements in pasture soils. The research was conducted in several localities of Stara Planina mountain (Babin zub, Javor I, Javor II and Prelesje), where the dominant soil type is acid humus siliceous soil (Dystric leptosol) characterized by the presence of the Agrostietumvulgaris (capillaris) community Z. Pavl., 1955. In all localities the soil sampling was performed at fixed depths of 0-5, 5-10, 10 -20 and 20 - 40 cm. The pseudo-total contents of trace elements (Pb, Cd, Cu and Zn) (extracted with aqua regia solution), as well as the available contents (extracted with the DTPA chelating agent) in the soil were measured by AAS. The pseudo- total content of trace elements in the soil studied are lower or within the limits for multifunctional land use. A correlation was established between the content of available trace elements in soil and the content of pseudo-total trace elements, as well as between these contents and the properties of the soils studied.","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"2012 1","pages":"41-56"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68303239","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: 7

Effect of explant type, medium and soil mixture content on Dianthus deltoides L. rooting and acclimatization 外植体类型、培养基和土壤混合物含量对石竹生根和驯化的影响

Glasnik Sumarskog Fakulteta Univerzitet u Beogradu Pub Date : 2012-01-01 DOI: 10.2298/GSF1205117M

M. Marković, M. Popović

引用次数: 0

Host plant effect on the number of moultings and head capsule width of the gypsy moth caterpillars 寄主植物对舞毒蛾毛虫脱毛数和头囊宽度的影响

Glasnik Sumarskog Fakulteta Univerzitet u Beogradu Pub Date : 2012-01-01 DOI: 10.2298/GSF1205127M

S. Milanovic, S. Milanović

引用次数: 0

The impact of the top coating on the mechanical properties of lacquered wood surfaces 面漆对漆木表面机械性能的影响

Glasnik Sumarskog Fakulteta Univerzitet u Beogradu Pub Date : 2012-01-01 DOI: 10.2298/GSF1206087J

M. Jaić, T. Palija

{"title":"The impact of the top coating on the mechanical properties of lacquered wood surfaces","authors":"M. Jaić, T. Palija","doi":"10.2298/GSF1206087J","DOIUrl":"https://doi.org/10.2298/GSF1206087J","url":null,"abstract":"This paper investigates the impact of the top coating on the basic mechanical properties of a lacquered surface, including indentation hardness, scratch resistance and abrasion resistance. Three types of the top coating were used, including a 2K polyurethane coating, a 2K acrylate-isocyanate coating and a 2K alkyd-urethane coating. Samples of two wood species, spruce (Picea abies Karst.) and oak (Quercus robur L.), were used in this study, in order to determine whether the wood species, which is not in direct contact with the top coating, has an impact on the mechanical properties of a lacquered surface. The samples coated with a 2K acrylate-isocyanate coating showed the highest values of indentation hardness, in the samples of both wood species (1.34 N for spruce; 1.4 N for oak). The samples coated with a 2K alkyd-urethane coating showed the highest values of scratch resistance (20 N for both wood species) and abrasion resistance (mass loss of 480 mg after 700 cycles for both wood species). The results have shown that the wood species does not affect the value of indentation hardness, scratch resistance and abrasion resistance of a lacquered surface.","PeriodicalId":30149,"journal":{"name":"Glasnik Sumarskog Fakulteta Univerzitet u Beogradu","volume":"1 1","pages":"87-100"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68303703","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