Báo cáo lâm nghiệp: "Department of Forest Establishment and Silviculture, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic" pot
Báo cáo lâm nghiệp: "Department of Forest Establishment and Silviculture, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic" pot
... Establishment and Silviculture, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech RepublicABSTRACT: The paper summarizes results from the analyses of Norway spruce ... development and health condition of the root system in Norway spruce af-fected by the decline and yellowing of assimilatory apparatus in forest stands managed by Forest Ad-ministration in Horní ... Youth and Sports of the Czech Republic, Project No. MSM 6215648902. Forest ecosystems in the borderland mountains of the Czech Republic were aff ected by large-scale decline and decay in the...
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Báo cáo lâm nghiệp: "Research on individual parameters for cutting power of woodcutting process by circular saws" docx
... power of woodcutting process by circular sawsJ. K, M. MDepartment of Forest and Mobile Technology, Faculty of Environmental and Manufacturing Technology, Technical University in Zvolen, ... process of chip cutting. It is mainly in the plain passing the lowest point of the cutting edge but it is also in the plain lying a little bit higher. e cutting clearance angle has a direct in uence ... value of cutting performance Pc in the process of wood crosscutting by a circular saw made of high-speed steel Fig. 6. e value of cutting performance Pc in the process of wood crosscutting...
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Báo cáo lâm nghiệp: "A digital photographic method for 3D reconstruction of standing tree shape" ppt
... level of 20 min per tree to something in the order of one minute per tree, thus enabling the method tobecome more efficient and potentially usable in routine forest inventory. With improvements in ... abies1. INTRODUCTIONThe commercial value of logs for processing into solid wood is mainly determined by the size and straightness of thetree stem, and the number and size of branches. One of thefirst ... the first 12 m of thestem (interval of uncertainty ± 7.2 mm) and lower for heightsabove 12 m (interval of uncertainty ± 20.8 mm). Accordingto these authors, wind was the most limiting factor to...
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Báo cáo lâm nghiệp: "Aboveground biomass relationships for mixed ash (Fraxinus excelsior L. and Ulmus glabra Hudson) stands in Eastern Prealps of Friuli Venezia Giulia (Italy)" pptx
... followed byafforestation and reforestation of former agricultural areas witha net increase of 14.9% of the forest area in Italy during the lastfifty years [14]. In particular, the climatic and edaphic ... arethe same of Table IV. SS is the sum of squares for error in arithmetic unit. In this case a and b and the coefficient of determination (R2) werecalculated using a nonlinear interpolation ... mm. The stand occupies an area of 2.4 ha and was partially used in the past as grassland. The forest is dominated byash (Fraxinus excelsior L.) (number of trees = 77%) with the presence of wych...
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Báo cáo lâm nghiệp: "A method for multiple intra-ring demarcation of coniferous trees" ppt
... from earlywood to latewood regardless of index value and not the inverse. Therefore, when dividing a tree ring into E and L zones, the aim of this method will be to classify cells in a radial ... (ELw) and late-latewood (LLw) is markedwith circle, triangle, and square, respectively. The vertical bars indicate the mean beginning position of each intra-ring zone of tree rings whichcontain ... exponentiallyfrom the beginning to the end of a tree ring [3, 5, 10, 12]. In anideal case (Fig. 1A), the principle is easily applicable: a tree ringbegins with E cells and once the index (density) value...
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Báo cáo lâm nghiệp: " An for attempt at generating haploid lines of Poplar species genetic manipulation and breeding program" pptx
... at generating haploid lines of Poplar speciesfor genetic manipulation and breeding programsK.E. WolterB.H. McCownDepartment of Horticulture, University of Wisconsin, Madison, ... making monitoringextremely difficult.Discussion and ConclusionThe conclusions from the results obtainedto date are that production and mainte-nance of haploid tissue lines ... poplar organogenesis and regeneration(Wolter, 1968; Russel and McCown, 1988);5) transcription of desirable genes into poplar and increased recovery of transformed poplarshoots...
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Báo cáo lâm nghiệp: " An for attempt at generating haploid lines of Poplar species genetic manipulation and breeding program" pps
... tube.Stream lines may appear irregular and fractal, reflecting the constrictions and enlarging nodes of the settling particles and cells (Batchelor, 1967). Rings oneitheir side of ... createdby inanimate particles settling in the fluid(cf. Fig. 1 A-E). In suspension cultures,where viscosity is increased by high levels of sucrose, myoinositol and casein hydro-lysate, ... distur-bances in embryogeny in conifers with particu-lar reference to seed testing and breeding in Pinaceae. Stud. For. Suec. 45, 1-97Durzan D.J. (1987) Plant growth regulators in cell...
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Báo cáo lâm nghiệp: "Spatially constrained harvest scheduling for strip allocation under Moore and Neumann neighbourhood adjacency" pdf
... School of Life Sciences, Tohoku University, Aoba, Sendai, Japan2 Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic3Department of Mathematical ... required in forest operations, stipulate a non-declining, even fl ow of timber. Such constraints refl ect one interpretation of “sustainable timber supply” and ensure a contin-uous supply of wood. ... hectare at age 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....
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Báo cáo lâm nghiệp: "A linkage among whole-stand model, individual-tree model and diameter-distribution model" ppsx
... Predic-tion of stand basal area with forecast combination. Journal of Beijing Forestry University. (in press)Z Y., M C.S., W K. (2006): e study of estimation of weight coefficient in combination ... Techniques, Chinese Academy of Forestry, Beijing, China ABSTRACT: Stand growth and yield models include whole-stand models, individual-tree models and diameter-distri-bution models. In this study, ... studying the integrated system of forest models. Acknowledgementse authors would like to thank the Inventory In- stitute of Beijing Forestry for its data and Dr. Q V. C for providing...
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Từ khóa: Nghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thốngchuyên đề điện xoay chiều theo dạngNghiên cứu sự hình thành lớp bảo vệ và khả năng chống ăn mòn của thép bền thời tiết trong điều kiện khí hậu nhiệt đới việt namNghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THzGiáo 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 CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN SLIDEĐịnh tội danh từ thực tiễn huyện Cần Giuộc, tỉnh Long An (Luận văn thạc sĩ)Chuong 2 nhận dạng rui roTổ chức và hoạt động của Phòng Tư pháp từ thực tiễn tỉnh Phú Thọ (Luận văn thạc sĩ)Kiểm sát việc giải quyết tố giác, tin báo về tội phạm và kiến nghị khởi tố theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn tỉnh Bình Định (Luận văn thạc sĩ)chuong 1 tong quan quan tri rui roGiáo 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)MÔN TRUYỀN THÔNG MARKETING TÍCH HỢPTÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲQUẢN LÝ VÀ TÁI CHẾ NHỰA Ở HOA KỲ