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Artículos de revistas sobre el tema "Suspension Logging"

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1

Posmetev, Valeriy, Vadim Nikonov, Vladimir Zelikov, and Viktor Posmetev. "TWO-FACTOR PARAMETER OPTIMIZATION OF PROMISING MODULAR HYDROPNEUMATIC SUSPENSION FOR LOGGING ROAD TRANSPORT." Forestry Engineering Journal 10, no. 3 (2020): 175–84. http://dx.doi.org/10.34220/issn.2222-7962/2020.3/17.

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The necessity to reduce the cost of timber haulage by logging road transport to increase the efficiency of logging in the Russian Federation has been substantiated. The drawbacks of the timber road transport equipped with traditional suspension systems, which are manifested when they transport timber along low quality logging roads, have been revealed. A promising direction for improving the operational properties of timber road transport used for hauling timber is described. It consists in the development of effective design schemes for suspensions for timber road transport with optimal suspe
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2

Lin, Chun-Hung, and Chih-Ping Lin. "Phase velocity approach for Suspension P–S Logging data analysis." Journal of Applied Geophysics 129 (June 2016): 126–32. http://dx.doi.org/10.1016/j.jappgeo.2016.04.001.

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3

Posmetev, Valeriy, Mikhail Drapalyuk, Vadim Nikonov, Viktor Posmetev, and Aleksandr Avdyuhin. "EFFICIENCY ESTIMATION OF HYDRO-PNEUMATIC SUSPENSION OF A TIMBER TRUCK ACCORDING TO THE RESULTS OF SIMULATION MODELLING." Forestry Engineering Journal 10, no. 1 (2020): 218–32. http://dx.doi.org/10.34220/issn.2222-7962/2020.1/26.

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The relevance of increasing the efficiency of timber transportation by forest transport vehicles through development of
 a promising hydropneumatic suspension scheme has been substantiated. A diagram of the proposed modular design suspension and logging vehicle equipped with this type of suspension has been presented. The results of its simulation have been
 also showed. A mathematical model of the movement of a six-wheeled timber truck in three-dimensional space has been developed to evaluate the use of such hydropneumatic suspensions in a forest car. The design scheme for construct
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4

Tanaka, Kenji, Kimio Ogura, and Hidetoshi Miura. "Application Of Suspension P-S Logging System To High Velocity Ground." Exploration Geophysics 16, no. 2-3 (1985): 289–91. http://dx.doi.org/10.1071/eg985289.

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5

Nikonov, V. O., V. I. Posmetev, and V. V. Posmetev. "Computer simulation results of modular hydropneumatic suspension of a logging vehicle." IOP Conference Series: Earth and Environmental Science 595 (December 2, 2020): 012059. http://dx.doi.org/10.1088/1755-1315/595/1/012059.

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6

Abuzov, A. V., and P. B. Ryabukhin. "Investigation of Cargo Suspension Oscillations of the Timber-Hauling Aerial Logging System." Bulletin of Higher Educational Institutions. Lesnoi Zhurnal (Forestry journal), no. 3 (May 10, 2018): 103–16. http://dx.doi.org/10.17238/issn0536-1036.2018.3.103.

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7

Spruit, Rodriaan, Frits van Tol, Wout Broere, Pieter Doornenbal, and Victor Hopman. "Distributed temperature sensing applied during diaphragm wall construction." Canadian Geotechnical Journal 54, no. 2 (2017): 219–33. http://dx.doi.org/10.1139/cgj-2014-0522.

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Distributed temperature sensing (DTS) can be used to monitor the production process of diaphragm walls. DTS is able to differentiate between already present or fresh bentonite suspensions during refreshing of the bentonite slurry in the trench. During concrete casting, DTS is able to differentiate between the bentonite suspension and concrete. As a result, the continuity of the casting process and the arrival of good grade concrete at crucial locations in the trench can be monitored. Tests conducted on laboratory models provided reference information for interpretation of field data. Field exp
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8

Sessions, John, Kevin Lyons, and Jeff Wimer. "Maximizing the Standing Skyline Log Load Using a Variable Length Tagline." Forests 12, no. 7 (2021): 927. http://dx.doi.org/10.3390/f12070927.

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The standing skyline continues to be a common cable logging configuration. In payload analysis it is usually assumed that the tagline (line connecting the logs to the carriage) length is held constant while yarding a turn up the skyline corridor. We show this assumption severely limits the skyline load-carrying capacity for skylines operating with partial suspension. We suggest that smart carriage technology could markedly increase the log load capacity through the use of a variable length tagline, and thus logging productivity. A methodology for estimating the log load capacity for a standing
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9

Tavner, A. C. R., J. D. Turner, and M. Hill. "A rule-based technique for two-state switchable suspension dampers." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 211, no. 1 (1997): 13–20. http://dx.doi.org/10.1243/0954407971526182.

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Following the introduction of an adaptive suspension system based on two-state switchable dampers for the Ford Mondeo, a requirement arose for a damper test system. A method was needed whereby the damper switching operation could be checked during routine servicing, without removing the damper from the vehicle. A technique has been developed which allows the switching function of each damper to be assessed by analysing the response of the vehicle to a series of ‘depress and release’ tests. A displacement transducer and data logging system record the displacement—time history at each wheel of t
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10

Клубничкин, Evgeniy Klubnichkin, Клубничкин, et al. "Determination of slipping of tracked forest machine." Forestry Engineering Journal 6, no. 4 (2017): 201–7. http://dx.doi.org/10.12737/23458.

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We studied slipping of forestry machines at constant and random grappled weight and traction load. In this case the distribution probability parameters are practically independent from the mass of the forest machine, its suspension system, transmission type (in case of providing traction "on clutch"), type of soil, and they are explained by the style of logging machines operation, to a certain extent, design and control system parameters of technological equipment.
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11

Junninen, Kaisa, Jari Kouki, and Pertti Renvall. "Restoration of natural legacies of fire in European boreal forests: an experimental approach to the effects on wood-decaying fungi." Canadian Journal of Forest Research 38, no. 2 (2008): 202–15. http://dx.doi.org/10.1139/x07-145.

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Effective fire suspension in Fennoscandian boreal forests has caused a number of species to become threatened. To compensate for the negative ecological impacts of fire elimination, prescribed burning of forests as a restoration method has been introduced recently. We studied the effects of controlled burning on assemblages of wood-decaying polypores (Basidiomycota), including red-listed species, in a large-scale field experiment in Finland. A total of 24 forest sites were included in the factorial study design with two factors: logging and burning. The presence of polypore fruiting bodies was
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12

Di, Sheng Jie, Zhi Gang Shan, and Xue Yong Xu. "Estimation Study on Shear Wave Velocity of Seabed Using GRNN." Applied Mechanics and Materials 580-583 (July 2014): 264–67. http://dx.doi.org/10.4028/www.scientific.net/amm.580-583.264.

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Characterization of the shear wave velocity of soils is an integral component of various seismic analysis, including site classification, hazard analysis, site response analysis, and soil-structure interaction. Shear wave velocity at offshore sites of the coastal regions can be measured by the suspension logging method according to the economic applicability. The study presents some methods for estimating the shear wave velocity profiles in the absence of site-specific shear wave velocity data. By applying generalized regression neural network (GRNN) for the estimation of in-situ shear wave ve
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13

Wong, Paulina, Poh-Chin Lai, and Melissa Hart. "Microclimate Variations between Semienclosed and Open Sections of a Marathon Route." Advances in Meteorology 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/287934.

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The Hong Kong Standard Chartered Marathon, held annually, is one of the most popular international marathon events. Its primarily urban environmental setting characterized by high-density urban areas, semienclosed tunnels, and suspension bridges, together with the herds of runners, has an influence on the microclimate along the marathon course. This study focused on assessing and comparing variations in temperature and vapour pressure (vis-à-vis relative humidity) against the crowd of runners, or the herd effects, in two different environmental settings along the marathon course: semienclosed
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14

Ismoilov, Abbos, Ulf Sellgren, and Kjell Andersson. "Development of dynamic base model of a bogie suspended forwarder." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 231, no. 2 (2016): 357–71. http://dx.doi.org/10.1177/1464419316671025.

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A forwarder is an off-road working machine that is used to transport logs from logging sites to a landing area that is accessible by trucks. Soil damage and operator comfort, especially whole-body vibrations when operating on hard and rough terrain, are crucial issues when developing novel forest machines. Most forwarders on the market are heavy machines with articulated steering and they are equipped with pairs of wheels mounted on bogies. For such bogie machines, only the flexibility and the dynamic dissipation in the tyres contribute to the “chassis damping”. The roll and lateral motions ar
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15

Zapata-Medina, David G., Leon D. Cortes-Garcia, Richard J. Finno, and Luis G. Arboleda-Monsalve. "Stiffness and strength anisotropy of overconsolidated Bootlegger Cove clays." Canadian Geotechnical Journal 57, no. 11 (2020): 1652–63. http://dx.doi.org/10.1139/cgj-2019-0068.

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This paper presents the evaluation of the stiffness and strength anisotropy of overconsolidated (OC) Bootlegger Cove Formation (BCF) clays at the Port of Alaska, formerly known as the Port of Anchorage. The stiffness and strength anisotropic material response was evaluated based on triaxial samples equipped with internal instrumentation including a submersible load cell and three subminiature linear variable displacement transducers (LVDTs). Three sets of bender elements were used in this research to measure shear wave velocities for different propagation and polarization directions. The effec
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16

Zhang, Bowen, Li Cheng, Chunlei Xu, and Mo Wang. "The Influence of Geometric Parameters of Pump Installation on the Hydraulic Performance of a Prefabricated Pumping Station." Energies 14, no. 4 (2021): 1039. http://dx.doi.org/10.3390/en14041039.

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A prefabricated pumping station is a new type of pumping station that plays an important role in the construction of sponge cities in developing countries. It solves the problem of urban water-logging and makes great contributions to the sustainable development of water resources. In order to research the influence of different installation positions of pumps on the internal hydraulic performance of a prefabricated pumping station, based on ANSYS software, the computational fluid dynamics (CFD) numerical simulation method was used to analyze the internal flow state of the prefabricated pump st
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17

BROGAN, HUGH. "W. H. Auden, Benjamin Britten, and Paul Bunyan." Journal of American Studies 32, no. 2 (1998): 281–82. http://dx.doi.org/10.1017/s0021875898005921.

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Somewhat to the surprise of the critics and the public, the exiled company of the Royal Opera House had a great success with their production of Benjamin Britten's “operetta,” Paul Bunyan, just before Christmas, 1997. Everyone knew the difficulties in advance – for instance, the piece has absolutely no dramatic momentum – but no one seems to have foreseen that the splendid music would carry all before it in a theatre, or that a highly accomplished cast would find so many moments of real comedy and pathos in performance. Even now it is hard to imagine the piece entering the regular repertory, b
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18

Dejphumee, Siwadol, and Inthuorn Sasanakul. "Evaluation of Uncertainties in Site Response Analysis of Deep Soil Profiles in South Carolina Coastal Plain." Bulletin of the Seismological Society of America, June 22, 2021. http://dx.doi.org/10.1785/0120200303.

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ABSTRACT The South Carolina Coastal Plain consists of deep soil sediments over basement bedrock. The depth of basement bedrock varies from being present at the surface to a depth of more than 1200 m at the southern tip of the state. A large variation exists in the thickness of the sediment, which impacts the seismic site response analyses of the Coastal Plain, particularly in areas where the availability of deep shear-wave velocity profiles is limited. This study evaluates the impact of variations in the shear-wave velocity profiles for two sites in the South Carolina Coastal Plain. The shear-
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19

Ji, Yumin, Byungmin Kim, and Kiseog Kim. "Evaluation of liquefaction potentials based on shear wave velocities in Pohang City, South Korea." International Journal of Geo-Engineering 12, no. 1 (2021). http://dx.doi.org/10.1186/s40703-020-00132-1.

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AbstractThis study evaluates the potentials of liquefaction caused by the 2017 moment magnitude 5.4 earthquake in Pohang City, South Korea. We obtain shear wave velocity profiles measured by suspension PS logging tests at the five sites near the epicenter. We also perform downhole tests at three of the five sites. Among the five sites, the surface manifestations (i.e., sand boils) were observed at the three sites, and not at the other two sites. The maximum accelerations on the ground surface at the five sites are estimated using the Next Generation Attenuation relationships for Western United
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20

Hartman, Yvonne, and Sandy Darab. "The Power of the Wave: Activism Rainbow Region-Style." M/C Journal 17, no. 6 (2014). http://dx.doi.org/10.5204/mcj.865.

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Introduction The counterculture that arose during the 1960s and 1970s left lasting social and political reverberations in developed nations. This was a time of increasing affluence and liberalisation which opened up remarkable political opportunities for social change. Within this context, an array of new social movements were a vital ingredient of the ferment that saw existing norms challenged and the establishment of new rights for many oppressed groups. An expanding arena of concerns included the environmental damage caused by 200 years of industrial capitalism. This article examines one as
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