Báo cáo lâm nghiệp: "Research on individual parameters for cutting power of woodcutting process by circular saws" docx
Báo cáo hóa học: " Research Article Hybrid Method for a Class of Stochastic Bi-Criteria Optimization Problems" docx
... constraints for the expectation method. 5. Final RemarksIn this paper, a class of stochastic bi-criteria optimization problems was studied by a new hybrid method where the chance-constrained ... management problem,” Journal of Inequalities and Applications, vol. 2009, Article ID 970723,16 pages, 2009.9 J. Xu and J. Li, A class of stochastic optimization problems with one quadratic ... of constraint violation takingaccount of the satisfaction degree of decision maker. The basic idea of this algorithmis to adjust the three-level parameters of decision maker until a satisfactory...
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Báo cáo lâm nghiệp: "Research on individual parameters for cutting power of woodcutting process by circular saws" docx
... parts: Research on individual parameters for cutting power of woodcutting process by circular sawsJ. K, M. MDepartment of Forest and Mobile Technology, Faculty of Environmental and ... mass of a work-piece by a cutting- wedge during the deformation of a mass in the surroundings of a cutting edge,– forces necessary for deflection of chips and sup-pression of chip friction against ... cutting power is very important and it is the factor of power consumption. Along with other cutting conditions the cutting angle is decisive for the performance of tools, machines, economics of...
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Báo cáo lâm nghiệp: "Changes in air quality in different phases of forest management process in a sub-mountain beech ecosystem (West Carpathian Mts.)" pdf
... 2/0045/08, and by the Slovak Research and Development Agency, Contract No. APVV-0102-06.Changes in air quality in different phases of forest management process in a sub-mountain beech ecosystem (West ... ecosystem (West Carpathian Mts.)D. KInstitute of Forest Ecology, Slovak Academy of Sciences, Zvolen, SlovakiaABSTRACT: We studied air quality in a sub-mountain beech ecosystem in the Kremnické ... intervention was evident on all plots – indicating the absence of connection with the individual phases of forest management process, but at the same time indicating the presence of climate change. In...
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Báo cáo lâm nghiệp: "Spatially constrained harvest scheduling for strip allocation under Moore and Neumann neighbourhood adjacency" pdf
... 70 J. FOR. SCI., 57, 2011 (2): 70–77JOURNAL OF FOREST SCIENCE, 57, 2011 (2): 70–77Spatially constrained harvest scheduling for strip allocation under Moore and Neumann neighbourhood ... t.In the case of strip window management, each forest stand was divided into strips following com-mon shelterwood management conventions for strip width and forest stand borders. Strips were created ... –1X), J. FOR. SCI., 57, 2011 (2): 70–77 75DISCUSSION AND CONCLUSION e strip shelterwood forest management system specifi es strip windows for harvest and regeneration of forest stands, along...
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Báo cáo lâm nghiệp: "Available nitrogen in the surface mineral layer of Serbian forest soils" docx
... subtraction of the initial content of available mineral N (for the anaerobic incubation of NH4+-N content); Ninitial‒ initial content of available mineral N (for the anaerobic incubation of NH4+-N ... the mineralization of nitrogen in the sur-face mineral layer of forest soils is diff erent from that in the forest fl oor. Besides, total crop and straw masses are in high correlation with the ... that the in- dices obtained by the process of anaerobic incuba-tion cannot be used to assess mineralizing nitrogen in clearings and arable soils. We also obtained by anaerobic incubation the...
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Báo cáo lâm nghiệp: "Air pollution load and stand nutrition in the Forest District Jablunkov, part Nýdek" docx
... of the 1990s. Forest soils showing the insufficiency of main nutrients remain today as the main factor affecting the forest vitality. e situation in the soil is subsequently reflected in the nutrition ... of the decline of Norway spruce (Picea abies [L.] Karst.) stands in Jablunkov, with a focus on air pollution load, and the state of forest soil and nutrition of forest stands.MATERIAL AND ... factor affecting the forest stands is the state of forest soils which shows the insufficiency of the main nutrients available, and sometimes in the total amount as well. e situation in the soil...
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Báo cáo lâm nghiệp: "Relationships between the parameters of aboveground parts and the parameters of root plates in Norway spruce with respect to soil drainage" docx
... correlation between the aboveground parameters and the depth of root plates in spruce trees growing both in waterlogged and in well-drained sites. According to our results, it seems that the roots of ... 353JOURNAL OF FOREST SCIENCE, 56, 2010 (8): 353–360Relationships between the parameters of aboveground parts and the parameters of root plates in Norway spruce with respect to soil drainageP. ... e-mail: stofko@neulogy.euness of root plates in Norway spruce trees, and it is probable that there does not exist any relationship between the aboveground parts and the rooting depth in adult spruce...
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Báo cáo lâm nghiệp: "A digital photographic method for 3D reconstruction of standing tree shape" ppt
... 1902. Measurement of standing tree shape by photographic method 635Figure 4. 3D reconstruction of the 70-year-old Norway spruce tree. Figure 5. Photographic method estimates of the local slope ... position of the standing trees. The disadvantages of this method are that a minimum of three targets per log must beattached to the stem of standing trees, and considerable timeis required for the ... Application of the method to measure 3D stemprofiles Reconstruction of the 3D stem profile of trees was undertakenthrough a series of field and laboratory measurements. In the field,a digital camera...
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Báo cáo lâm nghiệp: "Studies on European beech (Fagus sylvatica L.). Part 1: Variations of wood colour parameters" pptx
... separatingperipheral wood (PW), red heartwood (RH) and non red heartwood(NRH) points (mean for 342 boards). Colour variations of European beech wood 631Figure 6 illustrates these variations of colour for L* only ... 10.1051/forest:2005063Original articleStudies on European beech (Fagus sylvatica L.). Part 1: Variations of wood colour parametersShengquan LIUa,b, Caroline LOUPa, Joseph GRILa*, Olivier DUMONCEAUDc, Anne THIBAUTd, ... INTRODUCTIONThe colour of wood differs widely among species and alsowithin a tree. It is an important factor for end user to considerand the price of wood is often dependent on its colour param-eters...
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Báo cáo lâm nghiệp:"A height-diameter model for Pinus radiata D. Don in Galicia (Northwest Spain)" docx
... 237Ann. For. Sci. 60 (2003) 237245â INRA, EDP Sciences, 2003DOI: 10.1051/forest:2003015Original articleA height-diameter model for Pinus radiata D. Don in Galicia (Northwest Spain)Carlos ... The model of Tomé gave the best height estimates. Pinus radiata D. Don / forest modelling / Galicia / height-diameter relationshipRésumé – Un modèle hauteur-diamètre pour Pinus radiata D. Don ... obtained for diameter classes in the fitting phase of the two best models (Tomé [40] andCox II [11] Mod. 2).(a)(b) A height-diameter model for Pinus radiata 241The six models classified in...
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Báo cáo lâm nghiệp: "Observations on Armillaria occurrence in declining oak woods of southern Italy" pdf
... Qfrainetto, the latter resulting to be the mostheavily declining species (Sicoli et al,1993). Original articleObservations on Armillaria occurrence in declining oak woods ... pre-dominates on declining oaks in southern Italy, further surveys were carried out in numerous oak woods and additional Armillaria isolates were collected. Their identification ... tabescens was commonlyobserved at the collar of dead oaks in twolightly declining woods, but also close to declining trees in woods where the declinewas severe. A gallica...
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Báo cáo lâm nghiệp: "Investigations on vitality and genetic structure in oak stands" pps
... influences of decline on genetic structure of stands in the next generation.Preconditions for that are investigations con-cerning the state of damage of oak trees and the complete ... gene conservation and forest tree breeding, it is important to gaininformation about the genetic structure effect on the sensitivity to ’European oak decline’ and the influences ... genetic structure of oak stands and subpopulations distinguished by their vitality. In principle, the results indicate the same tendency for the relationship between vitality...
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Báo cáo lâm nghiệp: "experiment on the effect of girdling and gibberellin application on flowering induction of 12 yr old seedlings of Douglas fir and Norway spruce" pptx
... experiment on the effect of girdling and gibberellin application on flowering induction of 12 yr old seedlings of Douglas fir and Norway spruceM. Bonnet-Masimbertwith the technical ... ReferencesBonnet-Masimbert M. (1987) Preliminary results on gibberellin induction of flowering of seedlings and cuttings of Norway spruce indicate somecarry-over effects. For. ... the beginning of treatments. The length of the terminal and 2 subterminalshoots were measured in the fall on each se-lected branch and their total number of maleand...
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Báo cáo lâm nghiệp: "Studies on Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.) needle cuticles" potx
... plant cuticular membranes. An overview. Studies on Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.) needle cuticlesS. HuttunenM. TurunenJ. ReinikainenDepartment ... ResultsThe young needles of Norway spruce (Picea abies L. Karst.) develop in earlyJune under northern Finnish conditions,the Scots pine (Pinus sylvestris L.) needles about ... et ai. (1986) and Heis-ka and Huttunen (1987) studied enzymati-cally isolated conifer needle cuticles.Materials and Methods Scots pine and Norway spruce needle cuticleswere...
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