Báo cáo lâm nghiệp: "Reduction of wood hygroscopicity and associated dimensional response by repeated humidity cycles" doc
Báo cáo lâm nghiệp: "Reduction of wood hygroscopicity and associated dimensional response by repeated humidity cycles" doc
... reduction of wood response to variations of ambient humidity, described as kind of ageing, has been studied from both points of view of moisture uptake and dimensional changes. Clearwood specimens ... the loss of response in aged wood in terms of mois-ture content of the wood translates into a loss of dimensional Table II. Slope of sorption isotherm for the two relative humidity steps and corresponding ... 2005DOI: 10.1051/forest:2005020Original articleReduction of wood hygroscopicity and associated dimensional response by repeated humidity cyclesLuis GARCÍA ESTEBANa*, Joseph GRILb, Paloma...
- 10
- 277
- 0
Báo cáo lâm nghiệp: "Department of Forest Establishment and Silviculture, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic" pot
... Norway spruce; root systemSupported by the Ministry of Agriculture of the Czech Republic, Project No. QG 60060, and by the Ministry of Education, Youth and Sports of the Czech Republic, Project No. ... trees of diff erent age in selected stands of Krkonoše Mts. National ParkForest stand designation Number of MSR (pcs)Average length of MSR (cm)Average diameter of MSR (mm)Number of ... analyses of Norway spruce (Picea abies [L.] Karst.) stands man-aged by the Forest Administration in Horní Maršov, Krkonoše National Park (KRNAP), which are affected by decline and by yellowing of...
- 12
- 317
- 0
Báo cáo lâm nghiệp: "Quality of wood in the stands of poplar clones" docx
... Proportions of the quality classes of logs of clone Ro-busta with zero and 40% damage of stems of quality class AFig. 2. Proportions of the quality classes of logs of clone I-214 with zero and 40% ... started by the construction of tree assortment tables (P et al. 2007) and continued by constructing stand assortment tables.e aim of the paper is the construction of the models of stand ... quality of raw timber by means of the structure of assort-ments for the stands of poplar clones Robusta and I-214 are presented in the paper. Models for an estimation of the structure of basic...
- 8
- 282
- 0
Báo cáo lâm nghiệp:"Influence of basic density and temperature on mechanical properties perpendicular to grain of ten wood tropical species" pot
... the effect of temperature onmechanical properties of wet wood provide important datafor wood rheology, regardless of peeling and machiningapplications.The complex behaviour of wood is related ... C.C., Effect of moisture content and temperature on themechanical properties of woods: an analysis of immediate effects, Wood Fiber 14 (1982) 4–36.[4] Goring D.A.I., Thermal softening of lignin, ... density of woods [7]. Nev-ertheless, it seems that a detailed study of mechanical behav-iour of green wood is prevailing to determine peeling and machining ability [10]. In particular, influence of...
- 11
- 380
- 0
Báo cáo lâm nghiệp: "Simulation of wood deformation processes in drying and other types of environmental loading*" ppt
... formulation for simulation of deformations and stresses in wood dur-ing drying is given by where &jadnr; is the rate of nodal displacementvector and K, P and Po are stiffness ... matrix,load vector and pseudo-load vector, re-spectively, given by and where N and B are shape functions and strain shape functions for the elementtype used, and t and f are ... calculate moisture flow in wood. In: International Conference on Wood Drying.Understanding the Wood Drying Process: A Synthe-sis of Theory and Practice, Vienna, AustriaDahlblom...
- 10
- 288
- 0
Báo cáo lâm nghiệp: "Processes of loss, recruitment, and increment in stands of a primeval character in selected areas of the Pieniny National Park (southern Poland" ppt
... determination of the value of loss and recruit-ment, and calculation of increment, can be accom-plished by two control measurements of the stand, one at the beginning and one at the end of the study ... determination of stages and phases of development of the forest of a primeval character. e analysis of loss, recruitment, and increment renders a full determina-tion of changes in volume of individual ... (%)SpeciesRatio of the number of dead trees to the number of living treesRatio of the volume of dead trees to the volume of living treesRatio of the number of recruited trees to the number of trees...
- 12
- 362
- 0
Báo cáo lâm nghiệp: "Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed" pps
... Principles and applications. Part II – eo-ries of drainage and watershed runoff. Wageningen, Interna-tional Institute of Land Reclamation and Improvement. H Z. (1995): Draining of forest ... hydrograph by separation its recession limb and determining only the runoff con-stituents and their comparison also in the process of time. Similarly, the influence of land use changes on the ratio of ... development of regenerated forest stand. Under such conditions, the fluctuation of runoff can be related to the loss and restoration of both interception and transpiration. On the other hand, the...
- 7
- 403
- 0
Báo cáo lâm nghiệp: "Evaluation of the growth and health status of selected clone mixtures in comparison with ordinary planting stock" docx
... influ-ence of transplant shock and of the clone growth by site conditions interaction. But the results confirm a possibility of using the spruce clone stock and in situ selection for the selection of ... 1995). K and H (1998) and K (2000) stated that the height growth of clones by site interaction often changed with the age of clone plantation. e selection of clones 5060708090100Water ... differences).RESULTSComparison of the growth of parent trees and clones of the 1st and 2nd generationResearch plots were evaluated in the intervals of several years. So data acquired in plantations of dif-ferent...
- 9
- 298
- 0
Báo cáo lâm nghiệp: "Analysis of snow accumulation and snow melting in a young mountain spruce and beech stand in the Orlické hory Mts., Czech Republic" pptx
... spruce and beech stands were statistically evaluated by paired t-test for dependent samples.RESULTS AND DISCUSSIONFrom the aspect of the depth of snow precipita-tion and duration of snow ... methodology and results of studies have already been published in a number of papers (e.g. K 1984, 1995). In winter and in the period of spring melting, overland and lateral flow of water ... Germany and Switzerland. Attention was particularly paid to regions with the Supported by the Ministry of Education, Youth and Sports of the Czech Republic, the Research Plan of the Faculty of Forestry...
- 15
- 348
- 0
Báo cáo lâm nghiệp: "Diversity of endomycorrhizal fungi and their synergistic effect on the growth of Acacia catechu Willd." pot
... yield and quality by inoculation with VAM fungi and Rhizobium bacteria. Angewandte Botanik, 65: 23–33.LIU A., HAMAL C., HAMILTON R.I., MA B.L., 2000. Ac-quisition of Cu, Zn, Mn and Fe by mycorrhizal ... 1978. Effects of interac-tion between different culture fractions of phosphobacteria and Rhizobium on mycorrhizal infection, growth and nodulation of Medicago sativa. Canadian Journal of Botany, ... fixation by field grown soybeans. Biology and Fertility of Soil, 1: 15–23.GERDEMANN J.W., NICOLSON Y.H., 1963. Spores of mycor-rhizae Endogone species extracted from soil by wet sieving and decanting....
- 8
- 368
- 0
Từ khóa: báo cáo lâm nghiệpcách làm báo cáo tốt nghiệphướng dẫn làm báo cáo tốt nghiệp khoa kế toáncách làm bìa báo cáo tốt nghiệpcách làm slide báo cáo tốt nghiệpcách làm báo cáo tốt nghiệp chuyên ngành kế toáncách làm powerpoint báo cáo tốt nghiệptài liệu làm báo cáo tốt nghiệpcách làm bài báo cáo tốt nghiệphướng dẫn làm báo cáo tốt nghiệpbáo cáo tốt nghiệp ngành lâm nghiệphướng dẫn làm báo cáo tốt nghiệp trường lâm nghiệpmẫu bìa làm báo cáo tốt nghiệphướng dẫn làm slide báo cáo tốt nghiệpbáo cáo tốt nghiệp dược lâm sàngBáo cáo quy trình mua hàng CT CP Công Nghệ NPVMột số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTPGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitNghiên cứu, xây dựng phần mềm smartscan và ứng dụng trong bảo vệ mạng máy tính chuyên dùngNghiên cứu tổng hợp các oxit hỗn hợp kích thƣớc nanomet ce 0 75 zr0 25o2 , ce 0 5 zr0 5o2 và khảo sát hoạt tính quang xúc tác của chúngNghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000Tìm hiểu công cụ đánh giá hệ thống đảm bảo an toàn hệ thống thông tinThiết kế và chế tạo mô hình biến tần (inverter) cho máy điều hòa không khíQuản lý nợ xấu tại Agribank chi nhánh huyện Phù Yên, tỉnh Sơn La (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtchuong 1 tong quan quan tri rui roNguyên tắc phân hóa trách nhiệm hình sự đối với người dưới 18 tuổi phạm tội trong pháp luật hình sự Việt Nam (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtTrách nhiệm của người sử dụng lao động đối với lao động nữ theo pháp luật lao động Việt Nam từ thực tiễn các khu công nghiệp tại thành phố Hồ Chí Minh (Luận văn thạc sĩ)Đổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt namHIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀM