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Báo cáo lâm nghiệp: "Discrimination of coated carbide tools wear by the features extracted from parallel force and noise level" potx

Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Discrimination of coated carbide tools wear by the features extracted from parallel force and noise level" potx

... wears by the features extracted from the parallel force and noise level. The purpose is to determine the feasibility of using parallel force and noise level to monitor the extent of wear of the ... the rate of the increase of the parallel force and the noise level.3. Though the coated tools are applied for different cuttingspeed, the tools generate almost the same parallel force and noise ... though the amount of clearance wear of the TiN/AlN coated carbide was much lower than the other tools investigated [5], howeverits noise level is almost the same as that of the other tools. ...
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Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: " Conversion of even aged forest managed under the system involving coupes to selection forest in Klepačov J. Šilhánek" docx

... Czechia and Slovakia are given by the lower inven-tory limit and by the fact that a majority of stands were at the beginning of the conversion. e number of trees decreased on some plots in the ... need be evaluated with respect to the diameter structure and standing volume, which are reflected in the canopy closure of the stand and in the degree of the use of available space (S 1996). ... on the sustained continuity of regenera-tion processes and on the differentiation of the lower storey of the forest stands under conversion.e existing species composition as expressed by the...
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Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Growth of hybrid poplars in silviculture at the age of 6 years" pps

... il-lustrated by the estimation of standing volume.  e group of the best clones was represented by stand-ing volume 101–121 m3·ha–1 at the age of 6 years (Table 6).  e yield of the new clone ... 451JOURNAL OF FOREST SCIENCE, 56, 2010 (10): 451–460Supported by the Ministry of Agriculture of the Czech Republic, Project No. MZE 0002070203Growth of hybrid poplars in silviculture at the age of ... estimated stem volume (V) and mean annual increment of height (MAI) of 28 poplar clones at the end of their 6th year of growth. Means in vertical sequence not followed by the same letter are signifi...
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Báo cáo lâm nghiệp: " Effects of site preparation with micro-basins on Pinus halepensis Mill. afforestations in a semiarid ombroclimate" potx

... the annual trunk growth, and the only correlation shown is that of the rainfall values in the springseason, there is no correlation between the growth of the rings and the rainfall in any other ... the normal rainfall [23, 25] and so that they can handle a cloudburst originating a great runoff[1, 21]. On the other hand, the banks must have overflow chan-nels to avoid the flooding of the ... Pau and Thy-mus membranaceus Boiss. From this study we can gather the importance of site prep-aration techniques and the need of studying them in-depth, asthey have shown as basic for the...
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Báo cáo lâm nghiệp: "Influence of herbaceous competitors on early growth in direct seeded Fagus sylvatica L. and Quercus robur L" ppt

... selected seedlingsin the H and C treatments from each of two blocks were used and leaves from the top of the foliage were sampled. Only two treatments wereused, since the measurements are time-consuming. ... September dur-ing the three growing seasons (Tab. II). In the H and HF treat-ments, only short periods of low were recorded in the top10 cm of the soil during July and August. In the C and M treat-ments, ... of the seedlings in the first year, the demand for light, nutri-ents and water was small and the competition from the herba-ceous vegetation less than in following years. Field experiments and...
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Báo cáo lâm nghiệp: "Use of stem diameter variations for detecting the effects of pathogens on plant water status" pptx

... which corresponds to the extension of the cankers and finally the death of the plants. The relations between the global incidentradiation and both MDS and DE parame-ters ... to the necrosis of the bark and vascular tissues.They averaged 10 cm in length at the end of the experiment. The stem diameter evolution of plantsfor the different treatments ... between the variables and the global solar radiation recorded during the exper-iment.RESULTSAt the end of the experiment, the pathogenswere successfully reisolated from the...
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Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Variability of initial growth, water-use efficiency and carbon isotope discrimination in seedlings of Faidherbia albida (Del.) A. Chev., a multipurpose tree of semi-arid Africa. Provenance and drought effect" doc

... 3b. The droughteffect was indicated by the direction of the arrows, resulting in a reduction of vigour, of gas-exchange rates and of Δ, and in an increase of ... used the expression of Far-quhar and Richards [8]:Rplant and Rair are the carbon isotope ratios of the plant and the atmosphere, respectively, and δ is the ... Caemmerer and Farquhar [34]. A and g were reported to the projected leaf area, owing to the lack of infor-mation about the relative contribution of the two faces of these...
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Báo cáo lâm nghiệp: "Composition of psocid taxocenoses (Insecta: Psocoptera) in Fageti-Piceeta s. lat. and Piceeta s. lat. forests in the Western Carpathian Mts" pps

... side of the whole dotted field (along x-axis). It forms the high-est AVZ together with fields of the 8th and 9th AVZ. Only single habitats of the 7th AVZ occur in the field of the 4th and ... the DCA-analysis, habitats of the 8th AVZ lie along the x-axis on the left side. is dotted field is not situated along the x-axis in the same way as the field of the 7th AVZ because the ... (from the beginning of May up to the middle of September). Samples were collected by sweeping with a sweep net of 50 cm mouth in diameter. Branches of trees and bushes were beaten with the...
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Báo cáo lâm nghiệp: "Study of natural hybridization between Alnus incana (L.) Moench. and Alnus glutinosa (L.) Gaertn" pptx

... watercourses along the roads, moist sites at the foot of upland, grassy bogs, felled and burnt areas, abandoned meadows and plough-lands.Area: North, Middle and Southeast Europe, boun- dary of West ... frequency of hybridization in the northern boundary of their areas (Latvia, Ireland and others).Hybridization between A. incana and A. glutinosa should be assigned to the type “B” by M (1974), ... in the zone of continuous distribution of the species. Some increase in fre-quency of hybridization is noted by the northern boundary of the species areas, which is possibly connected to their...
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Báo cáo lâm nghiệp: "Analysis of some dynamic series of forest production and trends of forest economics in the Czech Republic" ppt

... rather negative trend of development due to the development of timber prices on the one hand and due to increasing inputs on the other hand, last but not least also due to the projections of ... 58). And it is not only the depreciation of actual yield from the forest that is concerned but also the frequently neglected detriment from the unused potential and production capacities of the ... with the application of Act No. 114/1992 on Nature Conservation and Landscape Protection – by declaring the Natura 2000 areas from 2004, with no regard of the declared compensations of forest...
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