Готові списки джерел за темами / Small diameter trees

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Добірка наукової літератури з теми "Small diameter trees"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Small diameter trees"

Italiano, G. F., and R. Ramaswami. "Maintaining Spanning Trees of Small Diameter." Algorithmica 22, no. 3 (1998): 275–304. http://dx.doi.org/10.1007/pl00009225.

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Ward, Jeffrey S. "Crop-Tree Release Increases Growth of Black Birch (Betula lenta L.) in Southern New England." Northern Journal of Applied Forestry 24, no. 2 (2007): 117–22. http://dx.doi.org/10.1093/njaf/24.2.117.

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Abstract Black birch (Betula lenta L.) has become an increasingly important component of northeastern forests in recent decades. In 1996ߝ97, plots were established in five stands to examine diameter and volume growth response of black birch to crop-tree release. The stands were from 20 to 99 years old, and mean crop-tree diameters ranged from 4.8 to 13.8 in. Growth of crop trees was monitored for 8 years. Over the 8-year period, diameter and volume growth of completely released poles (4.6ߝ10.5 in. in diameter) were twice that of unreleased poles. Increased growth was noted the 1st year after r

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Sullivan, Thomas P., Harry Coates, Les A. Jozsa, and Paul K. Diggle. "Influence of feeding damage by small mammals on tree growth and wood quality in young lodgepole pine." Canadian Journal of Forest Research 23, no. 5 (1993): 799–809. http://dx.doi.org/10.1139/x93-104.

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This study assessed the impact of feeding injuries by snowshoe hare (Lepusamericanus Erxleben) and red squirrel (Tamiasciurushudsonicus Erxleben) on diameter growth, height growth, and wood quality of juvenile lodgepole pine (Pinuscontorta Dougl. var latifolia Engelm.) at Prince George and in the Cariboo Region, British Columbia. In the Prince George control stand, severe girdling damage (50–99% stem circumference) suppressed diameter and height growth of small-diameter (4.1–6.0 cm) trees, but had no effect on larger stems (6.1–8.0 cm). In the spaced stand, diameter and height increments also

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Petráš, R., J. Mecko, and V. Nociar. "Diameter structure of the stands of poplar clones." Journal of Forest Science 56, No. 4 (2010): 165–70. http://dx.doi.org/10.17221/65/2009-jfs.

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The construction of a continuous mathematical model of frequency distributions of the diameters of trees of poplar clones Robusta and I-214 in dependence on tree diameter and mean diameter of stand is presented. Empirical material consists of diameter measurements on research plots from poplar regions in Slovakia. There were 90 plots for I-214 clone and 142 plots for Robusta clone. There were about 10&ndash;250 trees with mean diameter 2&ndash;70 cm on the research plots. The model was derived according to the three-parameter Weibull function. Its parameters were estimated by maximum l

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Lappi, Juha. "Calibration of Height and Volume Equations with Random Parameters." Forest Science 37, no. 3 (1991): 781–801. http://dx.doi.org/10.1093/forestscience/37.3.781.

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Abstract A new method for using sample tree heights and diameters to calibrate (localize) height/diameter and volume/diameter equations for a given stand is presented and illustrated with Scots pine data. The height/diameter and volume/diameter equations are assumed to contain random parameters that vary from stand to stand. The means, variances and both within-equation and between-equation covariances of the random parameters are estimated using data where volumes of trees from several stands are accurately measured. In applications, the random parameters of the height and volume equations of

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Hallman, Christine, Scott Parkinson, and Rex Adams. "LIMB: A Mini-Borer for Sampling Small-Diameter Trees." Tree-Ring Research 62, no. 2 (2006): 83–86. http://dx.doi.org/10.3959/1536-1098-62.2.83.

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Bahls, Patrick, and T. Scott Spencer. "On the Ramsey Numbers of Trees with Small Diameter." Graphs and Combinatorics 29, no. 1 (2011): 39–44. http://dx.doi.org/10.1007/s00373-011-1098-y.

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Jalil, Abd-Majid, Hazandy Abdul-Hamid, Sahrim-Lias, et al. "Assessment of the Effects of Artificial Fungi Inoculations on Agarwood Formation and Sap Flow Rate of Aquilaria malaccensis Lam. Using Sonic Tomography (SoT) and Sap Flow Meter (SFM)." Forests 13, no. 10 (2022): 1731. http://dx.doi.org/10.3390/f13101731.

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Agarwood is a valuable aromatic resinous wood that is biosynthesised when a fungal attack injures the healthy wood tissue of the Aquilaria tree. The magnitude of infection related to sap flow (SF) is one of the most critical functional traits to evaluate the tree’s response to various adverse conditions. Therefore, the objective of this study was to investigate the reliability of sonic tomography (SoT) and sap flow meter (SFM) in studying the influence of inoculation fungi Pichia kudriavzevii Boidin, Pignal and Besson, and Paecilomyces niveus Stolk and Samson, on deteriorated wood (Dt) and SF

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Lauderdale, Daniel M., Charles H. Gilliam, Donald J. Eakes, Gary J. Keever, and Arthur H. Chappelka. "Tree Transplant Size Influences Post-Transplant Growth, Gas Exchange, and Leaf Water Potential Of ‘October Glory’ Red Maple." Journal of Environmental Horticulture 13, no. 4 (1995): 178–81. http://dx.doi.org/10.24266/0738-2898-13.4.178.

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Abstract Effects of red maple transplant size [3.8 cm (1.5 in, small) and 7.6 cm (3.0 in, large) trunk diameter] on growth were evaluated at park and residential planting sites in Mobile, AL, during 1993 and 1994. Gas exchange and leaf water potential of transplants were monitored. Small trees had greater shoot elongation than large trees during both growing seasons. In 1994, small trees had greater height increases than large trees. Trunk diameter increases of small transplants were twice those of large transplants in 1994. Photosynthesis, leaf conductance, transpiration, and water use effici

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Li, Shangyang, Luming Fang, Yuanjing Sun, Lei Xia, and Xiongwei Lou. "Development of Measuring Device for Diameter at Breast Height of Trees." Forests 14, no. 2 (2023): 192. http://dx.doi.org/10.3390/f14020192.

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Diameter at breast height (DBH) is the main metric for standing tree growth measurements. Developing fast and efficient measurement devices for measuring DBH is of great values in forest resource surveys. In this paper, we propose a new tree diameter measurement instrument developed using self-reset displacement sensor, which is equipped with a Personal Computer (PC) terminal to enable the measurement, transmission, storage, and analysis of tree diameters in one. The measurements showed an overall bias of 1.44% and an accuracy of 97.35% compared to the caliper, a conventional diameter measurin

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Дисертації з теми "Small diameter trees"

Hallman, Christine, Scott Parkinson, and Rex Adams. "Limb: A Mini-Borer for Sampling Small Diameter Trees." Tree-Ring Society, 2006. http://hdl.handle.net/10150/262647.

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The dimensions, manufacture and application of a mini-borer to take 3-mm cores are described. This new instrument seems particularly well-suited to determining ages of saplings in situations where collection of cross-sections and coring with standard increment borers are too destructive, and where node-counting may not be sufficiently accurate. The design has resulted in trouble-free use in the field, and the mini-cores can be stored in the straws, and mounted and sanded in the core mounts used for collections of the standard 4-5-mm increment cores.

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Racelis, Alexis Eclevia. "The promises and perils of polewood : an interdisciplinary analysis of the management of small diameter tropical trees in central Quintana Roo, Mexico /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2009. http://uclibs.org/PID/11984.

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Yang, Te-Hsin, and 楊德新. "Engineering Performance of Structural Glued Laminated Timber made from Small Diameter Trees." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/07346809203309746384.

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博士<br>國立臺灣大學<br>森林環境暨資源學研究所<br>95<br>The purposes of this study was to investigate the effects of the configuration of the lamina on the engineering and fire performance of glulam made from Japanese cedar, Taiwania, Douglas-fir, and Southern pine lumber. First of all, two kinds of visually graded criterions, CNS 14630 and CNS14631, were applied to grade selected laminaes. Then, the bending properties of Japenses cedar, Taiwania, Douglas fir, and Southern pine laminaes were measured by nondestructive test methods including ultrasonic wave test, transverse vibration test, and static bending test

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Книги з теми "Small diameter trees"

Myers, Gary C. Small-diameter trees used for chemithermomechanical pulps. U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2003.

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Howard, James O. Harvesting overstocked stands of small diameter trees. Biomass and Energy Project, Pacific Northwest Forest and Range Experiment Station, 1987.

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Myers, Gary C. Small-diameter trees used for chemithermomechanical pulps. U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2003.

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Myers, Gary C. Small-diameter trees used for chemithermomechanical pulps. United States Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2003.

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Myers, Gary C. Small-diameter trees used for chemithermomechanical pulps. U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2003.

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Pong, W. Y. Harvesting overstocked stands of small diameter trees. Biomass and Energy Project, Pacific Northwest Forest and Range Experiment Station, 1986.

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Myers, Gary C. Small-diameter trees used for chemithermomechanical pulps. U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2003.

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Myers, Gary C. Small-diameter trees used for chemithermomechanical pulps. U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2003.

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Forest Products Laboratory (U.S.), ed. Forest Products Laboratory research program on small-diameter material. United States Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1998.

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Lynch, Dennis L. Opportunities for making wood products from small diameter trees in Colorado. U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Research Station, 2002.

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Частини книг з теми "Small diameter trees"

Italiano, Giuseppe F., and Rajiv Ramaswami. "Maintaining spanning trees of small diameter." In Automata, Languages and Programming. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/3-540-58201-0_71.

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Bodlaender, Hans L., and Torben Hagerup. "Tree decompositions of small diameter." In Mathematical Foundations of Computer Science 1998. Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/bfb0055821.

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Cabrera, Omar, Pablo Ramón, Bernd Stimm, Sven Gunter, and Reinhard Mosandl. "Damaged Trees Caused by Selective Thinning in Two Tropical Mountain Rain Forest Types in Southern Ecuador." In Tropical Forests - Ecology, Diversity and Conservation Status [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.109566.

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The proportion of damaged trees and the type caused by the selective thinning can have serious impacts on the ecological and economic sustainability of forests. So far, the damage caused by thinning operations in montane tropical forests is unknown. In this study, we try to quantify the damages caused by selective thinning in two types of humid montane forests in southern Ecuador. For this, we installed 52 permanent plots of 50 m x 50 m in two force types. In the valley forest (VF), we extracted an average basal area of 2.75 m² ha–1, in the ridge forest (RF) an average basal area of 0.8 m² ha–

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Whitmore, T. C. "Species richness." In Tropical Rain Forests. Oxford University PressOxford, 1998. http://dx.doi.org/10.1093/oso/9780198501480.003.0009.

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Abstract One of the most famous features of tropical rain forests is their extreme species richness which has impressed scientists ever since the earliest explorations (Chapter 1). Some species are common, but most are rare: as has been described above (p. 32), in the richest rain forests every second tree on a hectare or so is a different species. Even disregarding the trees, some rain forests are richer in species than any other vegetation on earth; and the richest communities outside the humid tropics have about the same total number of species on small plots as there are trees of 0.1 m in

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Sun, Zheng, Yu Zhou, Xiangcheng Huang, and Kuo Xu. "Design and Research of a Miniature Live Coating Robot for Overhead Bare Conductors." In Advances in Transdisciplinary Engineering. IOS Press, 2023. http://dx.doi.org/10.3233/atde230511.

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To solve the problem of insufficient crossing distance of overhead lines, the current power grid mainly adopts coating insulation layer on the outer surface of bare wires to achieve the purpose of line protection. However, the existing coating robots have large volume and weight, and there are problems such as insufficient climbing and braking capabilities. This article will improve the existing insulation coating robot technology, develop a compact and lightweight bare wire live insulation coating robot, reduce the volume and weight of the robot, achieve lightweight, and enable it to adapt to

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Mohd Nazri Wan Abdul Rahman, Wan, Nur Sakinah Mohamed Tamat, Nor Yuziah Mohd Yunus, and Jamaludin Kasim. "Size Effect of Core Strands on the Major Physical and Mechanical Properties of Oriented Strand Boards from Fast Growing Tropical Species." In Engineered Wood Products for Construction [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99953.

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Oriented strand board (OSB) is generally used for sheathing in residential walls, floors, and roofs. Because of its low pricing and utilisation of tiny diameter logs from fast-growing trees and thinning logs as raw materials, OSB is anticipated to gain popularity. In chapter, board properties of OSB using smaller strand size of Leucaena leucocephala as core layer had been studied. Small strand size of S3 (length = 75 mm, width = 3.2 to 6.3 mm) was located in the middle layer of the board while bigger strand sizes of S1 (length = 75 mm, width = 12.7 to 19.0 mm) and S2 (length = 75 mm, width = 6

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Lane, Belden C. "Desire: Rockpile Mountain Wilderness and Thomas Traherne." In Backpacking with the Saints. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780199927814.003.0013.

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A wilderness place triggers desire in unexpected ways. It plants an itch that can’t easily be satisfied. Take Rockpile Mountain in the Arcadia Valley region of the St. Francois Mountains in southeast Missouri. I’ve hiked its wilderness area numerous times, taking Little Grass Mountain Trail south to hook up with the loop trail that circles from the rocky shut-ins near the mountain’s foot to the strange “rock pile” at its crest. The place awakens desire in me every time I come. It’s nothing remarkable—a 1,305-foot knoll covered by an oak-hickory forest. Its name derives from a circle of blue gr

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Baldauf, S. L., D. Bhattacharya, J. Cockrill, P. Hugenholtz, J. Pawlowski, and A. G. B. Simpson. "The Tree of Life: An Overview." In Assembling the Tree of Life. Oxford University PressNew York, NY, 2004. http://dx.doi.org/10.1093/oso/9780195172348.003.0005.

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Abstract Most of life, for most of life’s history, is about single-celled organisms, which come in one of two types, eukaryotic and prokaryotic. Most of life is probably prokaryotic, in terms of numbers of cells, numbers of species, and time on Earth. Two of the three domains of life are prokaryotic, the Archaea and the Bacteria, and theirs are the oldest fossils, found in the oldest unmetamorphosed rock[3.5 Byr (billion years) old; Schopf et al. 2002; but see Van Zuillen et al. 2002]. Therefore, the last universal common ancestor of all life (LUCA) was probably prokaryotic, that is, a small c

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Comita, Liza, Ryan P. Dougherty, Salomon Aguilar, and Rolando Pérez. "Long-Term Census of Seedlings and Small Saplings in the Barro Colorado Island 50-ha Forest Dynamics Plot, Panama." In The First 100 Years of Research on Barro Colorado: Plant and Ecosystem Science. Smithsonian Institution Scholarly Press, 2024. https://doi.org/10.5479/si.26880712.

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Dynamics at early life stages play a critical role in shaping the composition and diversity of tropical tree communities. To better understand spatial and temporal patterns of recruitment, growth, and survival at early life stages, we established a long-term census of woody seedlings and small saplings in the Barro Colorado Island 50-ha Forest Dynamics Plot. Individuals ≥20 cm tall and <1cm diameter at breast height (dbh) were censused in 18,434 1-m 2 seedling plots every one to two years between 2001 and 2018, resulting in a dataset of 1,002,400 observations of 185,693 individuals of more

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Тези доповідей конференцій з теми "Small diameter trees"

PETAJA, Guna, Aldis BUTLERS, Modris OKMANIS, and Agris ZIMELIS. "ESTIMATION OF PRODUCTIVITY AND PRIME COST OF LOGSET 5HP GT HARVESTER IN THINNING." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.175.

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Productivity of a harvester significantly affects costs of mechanized felling, which in turn determines, if commercial thinning will be profitable. The objective of this study is to estimate productivity and prime cost of Logset 5HP GT harvester with increased boom length (11 m), equipped with the TH45 felling head, in thinning. Trials are conducted in Latvia, eastern Vidzeme, in coniferous stands. To evaluate productivity of Logset 5HP GT, a time study was carried out. Influence of small trees (diameter at breast height &amp;amp;lt; 8 cm) on productivity and harvesting cost was also deter

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Oktan, Ercan, and Neslihan Atar. "The Role of Monumental Trees in Carbon Storage." In 3rd International Congress on Engineering and Life Science. Prensip Publishing, 2023. http://dx.doi.org/10.61326/icelis.2023.47.

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Forest ecosystems are an important component of the global carbon cycle. Changes in the forest carbon cycle were determined by considering the biological structures at the leaf and stand level. However, there is no consensus on the nature of productivity at the individual tree scale. The mass growth rate of trees, and thus carbon deposition, differs depending on the size and age of the trees. In this study, the role of old monumental trees, which provide a wide variety of ecological functions and environmental benefits, in carbon storage was investigated. Because nowadays, the importance of mo

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Wasfy, Tamer, Hatem Wasfy, Paramsothy Jayakumar, and Srinivas Sanikommu. "Finite Element Model for Prediction of Ground Vehicle Mobility Over Vegetation Covered Terrains." In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22764.

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Abstract A finite element vegetation model is presented for predicting the dynamic interaction of ground vehicles with vegetation. The purpose of the model is to predict ground vehicle mobility over vegetation covered terrains. The types of vegetation can range from small diameter highly compliant stems to large stiff trees. Those include various types of vegetation such as grass, crops, shrubs/bushes, small trees, and large trees. Mobility measures which can be predicted include maximum safe vehicle speed along a specified path, tire slip, and fuel consumption. The ground vehicles are modeled

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An, Weizheng, Zhigang Li, Wentao Luo, Yingying Wang, and Menglan Duan. "Line Type Optimization of the Flexible Jumper for New Generation Subsea Suspended Manifold Production System." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18426.

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Abstract A new generation of subsea production system with the suspended manifold as the major characteristic was proposed to solve the disadvantages for hard to be discarded and recovered for the traditional subsea manifold fixed in seabed. Here, the flexible jumpers connecting the dry trees in the subsea functional chamber to the suspended manifold, can not only provide enough mooring forces as the mooring system, but also transport oil and gas from dry trees, which is an indispensable part of a complete new generation of subsea production system. So how to optimize the flexible jumpers to g

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Meyer, Christopher. "MASS Haptic." In 113th ACSA Annual Meeting Paper Proceedings. ACSA Press, 2025. https://doi.org/10.35483/acsa.am.113.6.

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The forested lands in the southeastern United States account for approximately 40% of the nation’s 521 million acres of timberland, which translates to about 208.4 million acres in U.S. forestry region eight1. These timber stands primarily consist of softwoods, with various uses in wood markets including wood pellets, pulp, chip-in-saw products, and sawtimber. Long-term timber management strategies prioritizing low-grade fiber products may hinder the forest’s capacity to satisfy the lumber demands of construction markets, especially with the rise of mass timber and other solid wood product mar

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Torkaman, Javad, and Tooba Abedi. "Investigating the Amount of Carbon Sequestration of Oak Seedling (Quercus castaneifolia C. A. Mey.)." In 3rd International Congress on Engineering and Life Science. Prensip Publishing, 2023. http://dx.doi.org/10.61326/icelis.2023.4.

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One of the most important ways to reduce Atmospheric carbon is the carbon sequestration by trees. In this study, by using some morphological characteristics of the root and stem of Oak seedling the carbon sequestration evaluated. For this purpose, one hundred seedlings were sampled by method of Systematic-Random from the planting bed on March 2022 in the Pylambra nursery at Guilan province. Seedlings are divided to three grades small, medium and large according to Root Collar Diameter (RCD). The biomass and carbon sequestration of Oak seedling calculated according to the basic density of its r

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Chen, Gengjie, and Evangeline F. Y. Young. "Dim Sum: Light Clock Tree by Small Diameter Sum." In 2019 Design, Automation & Test in Europe Conference & Exhibition (DATE). IEEE, 2019. http://dx.doi.org/10.23919/date.2019.8715285.

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Kamata, Toko, Satoru Ito, and Yuya Takaiwa. "RESEARCH AND DEVELOPMENT OF SMALL-SCALE TIMBER CONSTRUCTION SYSTEM "BI-TREE STRUCTURE" WITH SMALL-DIAMETER TIMBER." In World Conference on Timber Engineering 2023 (WCTE2023). World Conference on Timber Engineering (WCTE 2023), 2023. http://dx.doi.org/10.52202/069179-0302.

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Brown, Alexander L., and Patrick D. Brady. "A Technoeconomic Analysis of the Potential for Portable Pyrolysis in Northern New Mexico Forests." In ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ht2012-58113.

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Biomass pyrolysis systems can be designed to yield significant quantities of liquid. The liquids have approximately half the heating value of transportation fuels, depending strongly on the water content in the liquids. They are acidic, and tend to change with time, becoming more viscous and higher in molecular weight. However the process required to generate them is simple, and they hold promise to be a renewable source of liquid fuel if they can be produced in a way that is cost-effective. Northern New Mexico forests are mostly characterized by small diameter (less than or equal to 10 cm) co

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Le, James, Kraig Jackson, and Hee-Seok Kim. "Thermal Energy Harvesting of Tree Trunk for Low-Wattage Electronic Applications Using Modular Design of Thermoelectric Generators." In ASME 2024 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/imece2024-143235.

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Abstract Thermoelectric generators (TEGs) have a wide range of prospective applications in environmental monitoring, particularly for generating low-yield power. Extracting energy from the difference in temperature between a tree’s internal temperature and the surrounding air offers a reliable and low-maintenance method to power sensors and other small electronic devices. The primary focus of this study is on modularity and stacking of multiple stages by advancing the previous harvester prototype. This design enables the harvester to efficiently utilize the thermal energy from tree trunks. The

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Звіти організацій з теми "Small diameter trees"

Myers, Gary C., R. James Barbour, and Said M. AbuBakr. Small-diameter trees used for chemithermomechanical pulps. U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 2003. http://dx.doi.org/10.2737/fpl-gtr-141.

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Lynch, Dennis L., and Kurt H. Mackes. Opportunities for making wood products from small diameter trees in Colorado. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, 2002. http://dx.doi.org/10.2737/rmrs-rp-37.

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Lambert, Michael B., and James O. Howard. Cost and productivity of new technology for harvesting and in-woods processing small-diameter trees. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1990. http://dx.doi.org/10.2737/pnw-rp-430.

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Sanders, Suzanne, and Jessica Kirschbaum. Forest health monitoring at Mississippi National River and Recreation Area: 2022 field season. National Park Service, 2023. http://dx.doi.org/10.36967/2301407.

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The Mississippi National River and Recreation area (MISS), situated along a 116 km stretch of the Mississippi River through the Minneapolis and St. Paul urban corridor, encompasses ~21,800 ha of public and private land. In 2022, the Great Lakes Inventory and Monitoring Network (GLKN) resampled permanent forest monitoring sites in the park, marking the second assessment of these sites, which were established and initially sampled in 2011. The goal of this long-term monitoring project is to provides managers with routine updates on which to base management decisions; these data can also be used

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Zhang, Xingyu, Matteo Ciantia, Jonathan Knappett, and Anthony Leung. Micromechanical study of potential scale effects in small-scale modelling of sinker tree roots. University of Dundee, 2021. http://dx.doi.org/10.20933/100001235.

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When testing an 1:N geotechnical structure in the centrifuge, it is desirable to choose a large scale factor (N) that can fit the small-scale model in a model container and avoid unwanted boundary effects, however, this in turn may cause scale effects when the structure is overscaled. This is more significant when it comes to small-scale modelling of sinker root-soil interaction, where root-particle size ratio is much lower. In this study the Distinct Element Method (DEM) is used to investigate this problem. The sinker root of a model root system under axial loading was analysed, with both upw

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Liu, Hong, Paulo Olivas, and James Lange. An inventory study on the cigar orchid (Cyrtopodium punctatum) in Big Cypress National Preserve: Final report. National Park Service, 2024. http://dx.doi.org/10.36967/2302454.

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The cigar orchid is a Florida state-listed endangered species, made rare in southern Florida by historical over-collection for its unique beauty, in addition to habitat loss. It is largely restricted to a small number of cypress domes and freshwater sloughs in southwestern Florida, including the Big Cypress National Preserve (BICY). We established a baseline dataset on the population of cigar orchid at BICY, based on extensive field surveys within the following seven regions: Fire Prairie Trail-East, Gator Hook Trail, Florida Trail, Nobles Grade, North of Tamiami Trail (mainly the Skillet Stra

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Gage, Edward, Linda Zeigenfuss, Hanem Abouelezz, Allison Konkowski, David Cooper, and Therese Johnson. Vegetation response to Rocky Mountain National Park’s elk and vegetation management plan: Analysis of 2008–2018 data. National Park Service, 2023. http://dx.doi.org/10.36967/2299264.

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Rocky Mountain National Park (RMNP) developed the Elk and Vegetation Management Plan (EVMP) to address well-documented declines in the ecological condition of aspen stands and riparian communities from high levels of elk herbivory. The EVMP aims to reduce the impacts of elk on vegetation and restore the natural range of variability in the elk population and affected plant communities, including preventing the loss of aspen clones within high elk-use areas, restoring montane riparian willow cover and height within suitable habitat, and reducing of levels of elk grazing on herbaceous vegetation.

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Dasberg, Shmuel, Jan W. Hopmans, Larry J. Schwankl, and Dani Or. Drip Irrigation Management by TDR Monitoring of Soil Water and Solute Distribution. United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568095.bard.

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Drip irrigation has the potential of high water use efficiency, but actual water measurement is difficult because of the limited wetted volume. Two long-term experiments in orchards in Israel and in California and several field crop studies supported by this project have demonstrated the feasibility of precise monitoring of soil water distribution for drip irrigation in spite of the limited soil wetting. Time Domain Reflectometry (TDR) enables in situ measurement of soil water content of well defined small volumes. Several approaches were tried in monitoring the soil water balance in the field

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Dinger, Eric, and Eric Dinger. Analysis of stream types in Klamath Network parks based on physical habitat and chemical characters. National Park Service, 2024. http://dx.doi.org/10.36967/2306085.

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This is the first ?Analysis and Synthesis? report required by the Klamath Inventory and Monitoring Network?s stream monitoring protocol. This report synthesizes the physical and chemical attributes of streams surveyed by the Klamath Network between 2011 and 2018 in the following parks: Crater Lake National Park, Lassen Volcanic National Park, Whiskeytown National Recreation Area, Redwood National and State Parks, and Oregon Caves National Monument and Preserve). Where possible, it categorizes individual streams into groups using multivariate exploratory analyses and assigns statistical signifi

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