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Journal articles on the topic 'Wooden track'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

NEVZORAVA, A. B., and V. V. ROMANENKO. "ASSESSMENT OF THE LOAD-BEARING CAPACITY OF COMPOSITE WOODEN SLEEPERS LAID ON A TRACK." Bulletin Sukhoi State Technical University of Gomel, no. 1 (October 2024): 5–12. http://dx.doi.org/10.62595/1819-5245-2024-3-5-12.

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The article considers the feasibility of using transition and bridge beams waste for the production of composite wooden sleepers without the need to process them to standard sizes of railway sleepers. The results of numerical calculation of the bearing capacity of composite wooden sleepers laid in the track are obtained. These results satisfy the regulatory requirements for maximum permissible pressure in the ballast under the sleeper and on the main surface of the roadbed. The calculation of the minimum thickness of the ballast under the composite wooden sleeper is given, confirming the possi

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2

Zougari, A., and J. MartÍnez. "The experimental validation of a numerical model for the receptance prediction." MATEC Web of Conferences 286 (2019): 01007. http://dx.doi.org/10.1051/matecconf/201928601007.

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The traditional ballasted track with wooden sleepers covers today most railway lines constructions, including the tracks of tram and metro or the industrial railway branching. In this work, we present an experimental methodology to validate a numerical model based on finite element method, the model was previously well defined using the ANSYS Parametric Design Language (APDL) and adapted to represent a classical ballasted track. The obtained result of the analysis is expressed as a frequency response of the track and it is compared to the experimental result from measurements made on the metro

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3

Modaboyina, Sujeeth, Sahil Agrawal, Ragib Khan, and Anju Bhari. "Intraorbital wooden foreign body, legacy of a notorious scrap: a case report." BMJ Case Reports 14, no. 4 (2021): e242885. http://dx.doi.org/10.1136/bcr-2021-242885.

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Wooden foreign bodies are notorious to be fragile and get retained as bits and bobs in the orbit. A 50-year-old woman presented to casualty with complaints of loss of vision and pain in the right eye associated with discharge from a wound in right eye upper lid. On imaging, a wooden foreign body was seen as continuous track of air. Meticulous dissection and search were done to remove bits and bobs of the wood. Patient, however, after 15 days of primary surgery reported with pus collection over wound site. Keeping suspicion of remnant wooden body piece(s), imaging and further exploration were c

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Er Akan, Asli. "Structural Behaviour of 13th and 14th Century Seljuk Mosques and Acculturation of Construction Knowledge." Prostor 30, no. 1(63) (2022): 34–43. http://dx.doi.org/10.31522/p.30.1(63).4.

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This study aims to demonstrate the acculturation of Seljuk architecture and construction techniques by tracing the development of peripheral walls in Seljuk wooden hypostyle mosques built in 13th and 14th centuries. To track the exchange of construction knowledge two Seljuk mosques (the Hanönü Mosque in Kastamonu and the Ahi Elvan Mosque in Ankara) are selected for comparison in this study. The main difference between the two mosques is their structural systems: one has a wooden peripheral wall and wooden skeleton system, while the other has a masonry peripheral wall and wooden pillars. In thi

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Darenskiy, Oleksandr, Eduard Bielikov, Olexii Dudin, Alina Zvierieva, and Anatolii Oleshchenko. "Results of theoretical and experimental studies on determining the coefficient of subgrade reaction of sleepers for the conditions of main railways with axial loads of 30-35 tons per axle." MATEC Web of Conferences 230 (2018): 01003. http://dx.doi.org/10.1051/matecconf/201823001003.

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The article considers obtaining numerical values of the coefficient of subgrade reaction of wooden and reinforced concrete sleepers with axial loads up to 30-35 tons per axle. It has been concluded that using the rolling stock with axial loads of up to 35 tons per axle is necessary in order to ensure sustainable development of the railway complex. The performance of the railway track thus should be investigated in order to predict its operation in such conditions. Generally, such studies are performed using numerical methods. One of the parameters that are required for such calculations is the

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Fu, Hao, Yushi Yang, and Sakdirat Kaewunruen. "Multi-Hazard Effects of Crosswinds on Cascading Failures of Conventional and Interspersed Railway Tracks Exposed to Ballast Washaway and Moving Train Loads." Sensors 23, no. 4 (2023): 1786. http://dx.doi.org/10.3390/s23041786.

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The interspersed railway track is an enhanced timber railway track, spot-replacing damaged wooden sleepers with new concrete sleepers to improve the bearing capacity of existing railway lines. Although this interspersed solution is characterised by low cost and short maintenance time, the interspersed tracks have worse stability than concrete tracks and can deteriorate quickly when exposed to extreme weather conditions such as heavy rains and floods. In many cases, heavy rains and floods are accompanied by strong winds. Ballast washaway can often be observed under flood conditions while the ma

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Bojarczak, Piotr, and Waldemar Nowakowski. "Automatic Diagnosis of Railway Track Elements Using Deep Learning Neural Networks." Pomiary Automatyka Robotyka 28, no. 3 (2024): 21–30. http://dx.doi.org/10.14313/par_253/21.

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The article discusses a method for automatic diagnostics of a railway track. It consists in automatic evaluation of the technical condition of selected track elements, such as rails, wooden and concrete sleepers, fasteners and turnouts. It was carried out on the basis of analysis of video images of railroad track elements recorded by two line cameras placed on the diagnostic carriage. The selected FCN-8 deep learning neural network was used to assess the technical condition of the surveyed elements, and the effectiveness of the applied algorithm was determined on the basis of such measures as

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8

Sharma, Ashok, and Rajan Sharma. "Retrieval of deep corneal stromal wooden foreign body using vitreoretinal foreign body forceps as scoop: An innovative technique." Indian Journal of Ophthalmology 71, no. 12 (2023): 3718–20. http://dx.doi.org/10.4103/ijo.ijo_801_23.

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A 55-year-old woman presented with a stromal wooden foreign body (FB) in the left cornea. The deep corneal stroma wooden FB was removed using vitreoretinal FB forceps as a scoop. In this innovative technique, a 26-gauge needle was used to open the track of the wooden FB. The FB was trapped in the concavity of one limb of the vitreoretinal FB forceps. The vitreoretinal forceps were gradually withdrawn and the FB was removed. The patient was treated with gatifloxacin and voriconazole six times, and atropine 1% three times daily. The patient did not develop infiltrate or hypopyon in 2 weeks. Afte

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9

Khvostik, M. Yu, and M. A. Starodubtseva. "Studies of the constructed rail seat supports." Vestnik of the Railway Research Institute 76, no. 6 (2017): 371–76. http://dx.doi.org/10.21780/2223-9731-2017-76-6-371-376.

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In recent decades, the use of constructed sleepers on the world's railways has been increasing: the United States, the EU countries, Japan and China. Such sleepers, having positive performance qualities of wooden sleepers (good elasticity and dielectric properties, manufacturability during laying and during repair work), do not have negative qualities of wood. The article reviews the US and EU standards for testing sleepers made of constructed materials. The classification of such sleepers is given. Examples of testing of such sleepers by specialists of JSC “VNIIZhT” for the period from 1999 t

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10

Ren-liang, Shan, Zhang Xiao-nan, Lu Man, and Zhao Hong-yu. "The Complex Monolithic Movement for the Brick-wooden Building in Deformation Analysis and Reinforcement." Open Civil Engineering Journal 10, no. 1 (2016): 884–90. http://dx.doi.org/10.2174/1874149501610010884.

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This paper first analyzes the reasons of complex monolithic movement of a brick-wooden building in Henan province in China. The building foundation integral underpinning technique and curved-track moving technique which combine the track sharing-monolithic movement method and efficient long distance movement method were put forward. These methods use the anchor static pile, in order to guarantee the safety of the building for complex monolithic movement. The analysis of the internal force and deformation of underpinning structure was calculated by finite element software SAP2000. A practice ca

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Huang, Xincheng, Keylonnie L. Miller, Alanson P. Sample, and Nikola Banovic. "StructureSense." Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies 6, no. 4 (2022): 1–25. http://dx.doi.org/10.1145/3570343.

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Recent advancements in object-tracking technologies can turn mundane constructive assemblies into Tangible User Interfaces (TUI) media. Users rely on instructions or their own creativity to build both permanent and temporary structures out of such objects. However, most existing object-tracking technologies focus on tracking structures as monoliths, making it impossible to infer and track the user's assembly process and the resulting structures. Technologies that can track the assembly process often rely on specially fabricated assemblies, limiting the types of objects and structures they can

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12

Kukulski, Jacek, Piotr Gołębiowski, Jacek Makowski, Ilona Jacyna-Gołda, and Jolanta Żak. "Effective Method for Diagnosing Continuous Welded Track Condition Based on Experimental Research." Energies 14, no. 10 (2021): 2889. http://dx.doi.org/10.3390/en14102889.

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The correct operation of the continuous welded track requires diagnosing its condition and preparation of track metrics requiring measurements of displacements of rail under operation. This is required as there are additional thermal stresses in the rails with values depending on the temperature changes of the rails. Therefore, the climatic conditions are important. This paper presents the original effective analytical method for diagnosing the condition of continuous welded track based on experimental research. The method allows for an appropriate repair or maintenance recommendation. In the

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13

Brunning, Richard, David Hogan, Julie Jones, et al. "Saving the Sweet Track: Thein situpreservation of a Neolithic wooden trackway, Somerset, UK." Conservation and Management of Archaeological Sites 4, no. 1 (2000): 3–20. http://dx.doi.org/10.1179/135050300793138417.

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14

Amin, MN, MA Hossain, MS Miah, MS Hassan, and MA Hoque. "Development of suitable package for transportation of guava (Psidium guajava L.)." Bangladesh Journal of Agricultural Research 39, no. 2 (2014): 337–50. http://dx.doi.org/10.3329/bjar.v39i2.20437.

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Guava (Psidium guajava L.) is a perishable and climacteric fruit. The peel surface of guava is soft. During transportation, guava surface is rupture lack of proper packaging. Two types of corrugated fibre board (CFB) cartons of 7 and 5 ply and one type of wooden box were designed and fabricated for transportation of guava in Farm Machinery and Postharvest Process Engineering (FMPE) Division, Bangladesh Agricultural Research Institute, Gazipur in 2013. The dimensions of the cartons were 513 x 300 x 240 mm and 400 x 300 x 300 mm. The 7 ply cartons of both the size were found better than those of

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15

BEREZOVYI, M., M. ARBUZOV, D. KOZACHENKO, V. MALASHKIN, and O. BRYTVYN. "STUDY OF THE DESIGN OF RAILWAY TRACKS OF INDUSTRIAL ENTERPRISES WITHIN THE AREAS OF SMOOTH TRACK EXPANSION." Transport systems and transportation technologies, no. 28 (September 26, 2024): 22–27. http://dx.doi.org/10.15802/tstt2024/311995.

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The goal. Railway sidings of industrial enterprises are the shippers and receivers of goods, which determine their main nomenclature for transportation by mainline rail transport. The length of railway sidings of industrial enterprises varies widely, from a few hundred meters to hundreds of kilometers, including the length of the siding of PJSC ArcelorMittal Kryvyi Rih exceeding 700 km. The combination of factors such as the presence of technological transportation on the sidings, the development of the industrial enterprises' transportation system over time, and the master plan of the main pr

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16

Alizadeh, Mohsen, Kaveh Yousefian, and Jabbar Ali Zakeri. "Numerical and experimental investigation into longitudinal resistance of ballasted railway track with wooden sleepers." Construction and Building Materials 350 (October 2022): 128880. http://dx.doi.org/10.1016/j.conbuildmat.2022.128880.

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17

Tuley, Yusef, Natalia Bugaets, and Alina Malishevskaya. "Research into parameters of energy loss when trains influence the track with wooden sleepers." Eastern-European Journal of Enterprise Technologies 6, no. 1 (84) (2016): 9–13. http://dx.doi.org/10.15587/1729-4061.2016.85851.

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18

Bojarczak, Piotr, and Waldemar Nowakowski. "Application of Deep Learning Networks to Segmentation of Surface of Railway Tracks." Sensors 21, no. 12 (2021): 4065. http://dx.doi.org/10.3390/s21124065.

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The article presents a vision system for detecting elements of railway track. Four types of fasteners, wooden and concrete sleepers, rails, and turnouts can be recognized by our system. In addition, it is possible to determine the degree of sleeper ballast coverage. Our system is also able to work when the track is moderately covered by snow. We used a Fully Convolutional Neural Network with 8 times upsampling (FCN-8) to detect railway track elements. In order to speed up training and improve performance of the model, a pre-trained deep convolutional neural network developed by Oxford’s Visual

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19

Chiu, Luis Antonio Rocha, and Víctor Jiménez Arguelles. "Technical and economic feasibility of the Transisthmic Train in Mexico." Brazilian Journal of Business 7, no. 2 (2025): e79399. https://doi.org/10.34140/bjbv7n2-018.

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The Tehuantepec Isthmus Interoceanic Corridor is a program carried out by the Mexican government in the country southeast to provide a multimodal transportation system and contribute to the economic and social development of the region. The existing railway line of 303 km in length was inaugurated in 1907, the design does not comply with the current regulations due to excessive curvatures and slopes, the track has some sections of low load capacity rails and wooden sleepers. The project contemplates the construction of the double-track railway line to link the ports of Coatzacoalcos and Salina

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20

Tverdomed, V. "THEORETICAL RESEARCH OF THE POSSIBILITY OF JOINTLESS TRACK ARRANGEMENT IN CURVED SECTIONS OF RADIUS LESS THAN 350 METERS." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies" 1, no. 37 (2021): 86–96. http://dx.doi.org/10.32703/2617-9040-2021-37-10.

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The traditional structure of the upper structure of the track on the main railways of Ukraine in curved sections with a radius of less than 350 m is a link structure of the track with wooden sleepers. This track design is not rational under current operating conditions. The use of a more advanced jointless track design in curves with a radius of less than 350 m is limited primarily by the condition of ensuring the transverse stability of the rail-sleeper lattice. To be able to expand the use of jointless track construction in curved sections with a radius of less than 350 m, it is necessary to

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21

Курьянова, Татьяна, Tatyana Kuryanova, Алексей Платонов, et al. "Condition of production and operation of railway sleepers from various materials." Forestry Engineering Journal 7, no. 4 (2018): 157–66. http://dx.doi.org/10.12737/article_5a3d07e1242b54.88703069.

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Sleepers are elements of the upper structure of the railway track. When choosing a material for the manufacture of sleepers, we are based on such basic factors as cost for the whole life cycle and performance characteristics. In connection with the depletion of wood stocks in the world and the short life of wooden sleepers, the process of using sleepers made of reinforced concrete, metal and plastic goes intensively. The service life of pine sleepers is no more than 12-15 years, reinforced concrete sleepers are about 30-50 years old, plastic ones are up to 40 years old, and metal ones are 50-6

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22

Khaled, Abdullah, Ahmed Maher Hawila, Ahmed Saleh, and Mohammed Sadakah. "Retained Penetrating Radiolucent Foreign Body in the First Metatarsal With a Missed Diagnosis, a Case Report." JBJS Journal of Orthopaedics for Physician Assistants 13, no. 1 (2025): e24.00032. https://doi.org/10.2106/jbjs.jopa.24.00032.

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A 10-year-old boy presented with chronic medial plantar foot pain after penetrating trauma. At the time of trauma, radiographs were clear, and medications were prescribed. Two years later, radiographs showed a track of an osteolytic lesion extending to the physis of the first metatarsal. Surgical debridement and removal of the wooden foreign body were performed. At the final follow-up, he was asymptomatic. Penetrating radiolucent foreign bodies can be missed at the initial presentation and may lead to destruction of the adjacent bone and soft tissue. It requires a high index of suspicion and a

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23

Younis, Reem, Eran Berkowitz, Roni Shreter, Anat Kesler, and Itzhak Braverman. "Traumatic Optic Neuropathy and Monocular Blindness following Transnasal Penetrating Optic Canal Injury by a Wooden Foreign Body." Case Reports in Ophthalmology 9, no. 2 (2018): 341–47. http://dx.doi.org/10.1159/000490758.

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Purpose: To report a case of right eye blindness due to a penetrating injury in the contralateral nostril. Methods: This is a case report of a 67-year-old patient who presented to the emergency room complaining of transient blurred vision in his right eye after falling on a small branch with no apparent injury besides minor lacerations. The following day, the patient experienced blindness in the right eye. Physical examination revealed small lacerations on his left forehead and optic neuropathy on the right side with no other obvious discerning physical or imaging abnormalities. Results: After

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Demyanovich, Irina V. "Improving the efficiency of track machine stations in BAM conditions." Modern Transportation Systems and Technologies 10, no. 2 (2024): 274–86. http://dx.doi.org/10.17816/transsyst626637.

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Background. The article examines the specifics of implementing a capital construction plan by the track engine station on the Baikal–Amur mainline (BAM) section. The scientific problem focuses on assessing the effective use of labor in the challenging conditions of the Far North. Special attention is paid to calculating the number of workers needed and the potential savings in operating costs. A key aspect is the study of increasing mechanization levels for manual tasks, such as dismantling wooden rail gratings. Aim. The aim of this study is to provide an analytical assessment of the labor pla

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Algreen-Ussing, Gregers. "Travelling with Architect Erik Hansen: A Cypress on the Peloponnese." Acta Archaeologica 93, no. 1 (2023): 23–28. http://dx.doi.org/10.1163/16000390-20210014.

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Abstract This reflective article starts with a personal anecdote, a journey together with Erik Hansen on the Peloponnese to visit an old cypress. He describes Hansen’s empathetic working method, which leads to a better understanding of the whole construction process of the temple. An essential part was the building of an evenly ascending slipway on the steep hillside, which could comply with the limits of the tractive force and the load put on the constructed track by the transport of the building blocks and wooden beams. This slipway was used to transport around 2,000 building blocks with a t

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Boiko, Volodymyr, Vitalii Molchanov, Volodymyr Tverdomed, and Olena Oliinyk. "Analysis of Vertical Irregularities and Dynamic Forces on the Switch Frogs of the Underground Railway." MATEC Web of Conferences 230 (2018): 01001. http://dx.doi.org/10.1051/matecconf/201823001001.

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This article presents the analysis of vertical irregularities and dynamic forces on the switch frogs in operating conditions on the main tracks of Kiev underground railway. For main railways the deterioration problem of tongues, framed rails, switch frogs and as a consequence formation of the character in interaction on the railroad switches is quite widely studied by different scientists, but for conditions of railway underground such researches are practically absent. However, in order to use metal elements of switches rationally and efficiently, the forecast of their service operation and r

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27

Winiarek, Przemysław, and Aneta Kruk. "Analiza wybranych parametrów chemicznych gleb wzdłuż linii kolejowych." Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 26, no. 4 (2017): 498–513. http://dx.doi.org/10.22630/pniks.2017.26.4.48.

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The aim of the study was to assess the quality of soils underneath operating railway lines. The lines selected for the examination were outside the reach of external sources of potential pollution. The samples were collected along a plain line section after and before an upgrade work, within the station area and in a railway equipment repair yard. The assessment covered the following types of sections: single-track, double-track, with wooden and concrete sleepers, adjacent to switches subject to lubrication, in the car shunting yard and visibly contaminated areas. The samples were tested for t

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28

Falkowski, Tomasz, Filip Bujakowski, Piotr Ostrowski, and Grzegorz Wierzbicki. "Przydatność kryteriów litogenetycznych w konstrukcji numerycznego modelu krążenia wód podziemnych w strefie krawędziowej wysoczyzny." Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 26, no. 4 (2017): 514–27. http://dx.doi.org/10.22630/pniks.2017.26.4.49.

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The aim of the study was to assess the quality of soils underneath operating railway lines. The lines selected for the examination were outside the reach of external sources of potential pollution. The samples were collected along a plain line section after and before an upgrade work, within the station area and in a railway equipment repair yard. The assessment covered the following types of sections: single-track, double-track, with wooden and concrete sleepers, adjacent to switches subject to lubrication, in the car shunting yard and visibly contaminated areas. The samples were tested for t

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29

Kasess, Christian H., Thomas Maly, Wolfgang Kreuzer, and Holger Waubke. "The effect of reflecting panels on the efficiency of railway noise barriers." Journal of the Acoustical Society of America 157, no. 5 (2025): 3718–29. https://doi.org/10.1121/10.0036697.

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Noise barriers containing transparent elements may suffer from a reduced shielding effect due to increased multiple reflections between vehicle and barrier. Using mostly simulations, different factors have been identified previously influencing this effect, e.g., size and position of reflecting portions. However, few in situ measurement data have been published. Here, pass-by measurements of a 2 m high, highly absorbing noise barrier are presented for a double-track line during regular operation. The barrier was modified using acoustically reflecting wooden panels placed along the top or the m

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Gomon, Petro. "INNOVATIVE METHOD FOR FORWARD STRESSING OF COMBINED REINFORCEMENT OF WOODEN BEAMS." Urban development and spatial planning, no. 79 (April 11, 2022): 77–86. http://dx.doi.org/10.32347/2076-815x.2022.79.77-86.

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The article describes the basic methods of front tensioning of steel reinforcement and composite smuga behind the help of special outbuildings when folding forward stressed wooden elements and structures. For the essential advancement of the hardness of the elements from the village, which is necessary to apply to the core: increase the strength of the squeezed zone of reinforcement with accessible reinforcement with the highest modulus of springiness, that is, steel; create a buoyant wig for the front tension of the composite stitching made of carbon fiber by Sika CarboDur. The se

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Titarenko, M. I. "The work of rails under conditions of various average static axial loads of rolling stock." Vestnik of the Railway Research Institute 77, no. 3 (2018): 172–76. http://dx.doi.org/10.21780/2223-9731-2018-77-3-172-176.

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The analysis of failure of unhardened and heat-strengthened R65 rails under operating conditions in the tangent sections of the track is presented taking into account the influence of the most important operational factor - the average static axial loads of the rolling stock. Non-reinforced R65 rails in the jointed track on the 12.5 m long wooden sub-rail base were considered based on the results of their single replacement in the entire range of their failures. The work of rails under operating conditions is estimated at average static axial loads of rolling stock as 7.5, 9.5, 16.5 and 19.5 t

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Ahmed, Sayed, Hossam Atef, and Mohamed Husain. "Improvement of mechanical properties of railway track concrete sleepers using ultra high performance concrete (UHPC)." Frattura ed Integrità Strutturale 16, no. 60 (2022): 243–64. http://dx.doi.org/10.3221/igf-esis.60.17.

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In recent times, the shape of the beams evolved from wooden sleepers and then to steel sleepers until they reached concrete sleepers. These sleepers play a very important role in transferring the loads from the train wheels to the subgrade layers fixed by the railway. This development took place in concrete sleepers until we reached mono-block concrete sleepers. This paper discusses, through laboratory experiments, the effect of ultra-high performance concrete mixtures on the behavior of mono-block concrete sleeper B70. The ability of these new sleepers to resist train loads was also studied,

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Naji, Kather A., Mohammed A. Al Neami, and Mahmood R. Mahmood. "Experimental and Numerical Analysis on Response of Steel Sheet Pile Wall Adjacent to Railway Track." IOP Conference Series: Earth and Environmental Science 1507, no. 1 (2025): 012061. https://doi.org/10.1088/1755-1315/1507/1/012061.

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Abstract In this study, a miniature lab model of the actual track with oneseventh size was used to examine how the live load from the train’s passage affected the settlement and displacement of the nearby steel sheet pile wall. Also, to investigate the behavior of a real-life railway model under the same conditions, PLAXIS 3D software (2020) was employed based on the experimental model results. The Moher-Coulomb model is used to simulate; a linear elastic model and plate element were used to represent soil bodies, railways, and the sheet pile wall. The lab track model was built using two long

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Hübner, J., J. Olesch, H. Falke, F. X. Meixner, and T. Foken. "A horizontal mobile measuring system for atmospheric quantities." Atmospheric Measurement Techniques 7, no. 9 (2014): 2967–80. http://dx.doi.org/10.5194/amt-7-2967-2014.

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Abstract. A fully automatic horizontal mobile measuring system (HMMS) for atmospheric quantities has been developed. The HMMS is based on the drive mechanism of a garden railway system and can be installed at any location and along any measuring track. In addition to meteorological quantities (temperature, humidity and short-/long-wave down/upwelling radiation), HMMS also measures trace gas concentrations (carbon dioxide and ozone). While sufficient spatial resolution is a problem even for measurements on distributed towers, this could be easily achieved with the HMMS, which has been specifica

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Hübner, J., J. Olesch, H. Falke, F. X. Meixner, and T. Foken. "A horizontal mobile measuring system for atmospheric quantities." Atmospheric Measurement Techniques Discussions 7, no. 5 (2014): 4551–88. http://dx.doi.org/10.5194/amtd-7-4551-2014.

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Abstract. A fully automatic Horizontal Mobile Measuring System (HMMS) for atmospheric quantities has been developed. The HMMS is based on the drive mechanism of a garden railway system and can be installed at any location and with any measuring track. In addition to meteorological quantities (temperature, humidity and short/long-wave down/upwelling radiation), HMMS also measures trace gas concentrations (carbon dioxide and ozone). While sufficient spatial resolution is a problem even for measurements on distributed towers, this could be easily achieved with the HMMS, which has been specificall

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36

Kowalczyk, Dariusz. "Testing of Railway Prestressed Concrete Sleepers Using Acoustic Emission." Problemy Kolejnictwa - Railway Reports 66, no. 197 (2022): 161–74. http://dx.doi.org/10.36137/1974e.

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The article describes the tests of prestressed concrete sleepers made according to the method specified in the requirements of the European standards (EN 13230-2:2009 Railway applications – Track – Concrete sleepers and bearers – Part 2: Prestressed monoblock sleepers) and WTWiO regulations, and an additional measurement method was used – acoustic emission (AE). The purpose of the tests using the acoustic emission method was to verify the results obtained using other test methods de-scribed in the European standard. The use of this method in sleeper tests enables obtaining precise data from th

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Pineda de Carías, María C., Nohemy L. Rivera, and Cristina M. Argueta. "STELA D: A SUNDIAL AT COPAN, HONDURAS." Ancient Mesoamerica 28, no. 2 (2017): 543–57. http://dx.doi.org/10.1017/s0956536116000286.

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AbstractThe Maya of Copan, Honduras used Stela D, its altar, and the surrounding structures as a sundial to record time. Archaeological investigations show that wooden posts and stelae could have been used to measure time and to perform associated rites in the northern sector of the Main Plaza of the Copan Archaeological Park. We constructed a digital model of Stela D to study the shadows cast at different times of day and on different dates of the year, such as solstices, equinoxes, and solar zenith passages. The size and orientation of the shadows may have served as a time marker that ancien

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Sharma, Rajev Kumar, Ajay Sharma, and Sandeep Kanaujia. "Smart Maintenance of Railway Infrastructure Using Wireless Sensor Networks." International Journal of Experimental Research and Review 46 (December 30, 2024): 113–26. https://doi.org/10.52756/ijerr.2024.v46.009.

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The railway infrastructure is a perfect blend of all branches of engineering. Technology has drastically increased, mainly in the Signalling, Civil, Electrical and Mechanical engineering streams. In the field of Signalling, it has leaped from Mechanical to Electronics Interlocking. Civil engineering has gone from manual track maintenance to high-end mechanized tools. In the field of mechanical engineering, it has progressed from wooden coaches to modern designed (LHB)coaches. In electrical engineering, the technology changed from steam loco to diesel and later electrically powered loco design.

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Rahimov, Rustam, Shokhrukh Sultonov, Otabek Nigmatov, Meirkhan Baltaev, Vasila Ergasheva, and Liliya Filimonova. "Commissioning of the freight wagons with increased axle loads is a guarantee of the further development of railways of the Republic of Uzbekistan." E3S Web of Conferences 264 (2021): 05049. http://dx.doi.org/10.1051/e3sconf/202126405049.

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The aim of the study is to select rational axle loads of the rolling stock and establish the conditions for their circulation on the railways of the Republic of Uzbekistan. In this work, research has been carried out to assess the indicators of the stress-strain state of rail track elements from the action of the rolling stock with various axial loads. The dynamic loads from the rolling stock wheel on the rail, tensile stresses at the edges of the rail foot, in wooden sleepers (rubber under-rail pads on reinforced concrete) under the linings, in the ballast under the sleeper, as well as stress

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Szalai, Szabolcs, Balázs Eller, Erika Juhász, et al. "Investigation of deformations of ballasted railway track during collapse using the Digital Image Correlation Method (DICM)." Reports in Mechanical Engineering 3, no. 1 (2022): 258–82. http://dx.doi.org/10.31181/rme20016032022s.

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This paper summarizes the results of laboratory tests in which the authors investigated the effects of extremely high vertical load to a railway track segment. The segment consisted of a cut concrete sleeper (contact area: 290×390 mm) with a pair of direct-elastic rail fasteners; the sleeper pieces had a standard, full height; the structure had a typical 350 mm depth railway ballast, underneath approx. 200 mm sandy gravel supplementary layer. The whole assembly was built in a 2.00×2.20 m area wooden rack. The deformations due to the approx. 150 kN static concentrated vertical force were measur

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Курьянова, Татьяна, Tatyana Kuryanova, Алексей Платонов, et al. "THEORETICAL FOUNDATIONS OF OBTAINING MODIFIED WOOD." Forestry Engineering Journal 8, no. 1 (2018): 150–57. http://dx.doi.org/10.12737/article_5ab0dfc30d6f83.06547595.

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The element of the upper structure of the railway track are sleepers, which are made mainly of wood. Wooden sleepers from natural wood have a number of disadvantages. Reduce the disadvantages of sleepers made of natural wood is possible if their manufacture to use modified wood myag-kih hardwood, which by pressing will exceed the strength of the sleepers made of natural Dre-spring and its physical and mechanical characteristics is not inferior to the sleepers made of natural coniferous wood. However, one of the disadvantages of modified wood is its ability to change the size and shape with inc

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Rajab, Muhammad Arhan, Nurdin Nurdin, and Nur Ifra Khumaera. "STRATEGI PENGEMBANGAN EKOWISATA MANGROVE DESA BULU CINDEA KABUPATEN PANGKEP SULAWESI SELATAN." AGRI-SOSIOEKONOMI 18, no. 1 (2022): 1–6. http://dx.doi.org/10.35791/agrsosek.v18i1.55157.

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The purpose of this research is to formulate a strategy for developing mangrove ecotourism in Bulu Cindea Village, Maros Regency. The sampling method used in this research is the accidental sampling method. Interviews were conducted on 37 visitors or tourists. Data analysis was carried out using the SWOT method with descriptive qualitative and quantitative descriptive, the results of the identification of potential natural resources in the form of flora and fauna were described to find out tourist attraction objects that could be developed. In analyzing visitor perception data, the analysis us

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Rofallski, Robin, Amandine Colson, and Thomas Luhmann. "Multimedia Photogrammetry for Automated 3D Monitoring in Archaeological Waterlogged Wood Conservation." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-2-2024 (June 11, 2024): 355–62. http://dx.doi.org/10.5194/isprs-archives-xlviii-2-2024-355-2024.

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Abstract. This study addresses the challenges inherent in preserving archaeological waterlogged wood, which is prone to deformation and decay if not stabilized immediately after recovery. Conventional preservation methods, such as impregnation with polyethylene glycol (PEG) solutions, often result in undesirable dimensional changes. To obtain exact spatio-temporal information on the deformations during the conservation process, a photogrammetric monitoring system, utilizing a stereo camera facing from air into the liquid, attached to an automated biaxial measurement unit is proposed. Special t

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Lenevych, Oksana. "THE IMPACT OF RECREATION LOADING ON PHYSICAL AND WATER-PHYSICAL PROPERTIES OF BROWN FOREST SOILS." PROBLEMS OF GEOMORPHOLOGY AND PALEOGEOGRAPHY OF THE UKRANIAN CARPATHIANS AND ADJACENT AREAS, no. 11(01) (January 13, 2021): 311–28. http://dx.doi.org/10.30970/gpc.2020.1.3214.

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The article analyses the influence of recreational load on the physical and water-physical properties of brown forest soils. It is established that the complete or partial absence of litter on the pathway contributes to the rapid evaporation of moisture from the upper horizon (0−5 cm) of the soil, reducing the porosity total, increasing the density solid phase and buk density. It was found that with the increase of the buk density by 12,5 % the water permeability of the soil decreases 33 times in comparison with the control. A significant increase in the bulk density of the structure by 39−48

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Idczak, Włodzimierz, Tomasz Lewandrowski, Dominik Pokropski, Tomasz Rudnicki, and Jacek Trzmiel. "Dynamic Impact of a Rail Vehicle on a Rail Infrastructure with Particular Focus on the Phenomenon of Threshold Effect." Energies 15, no. 6 (2022): 2119. http://dx.doi.org/10.3390/en15062119.

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The paper undertakes analysis of the dynamic impact of a rail vehicle on various types of a railway infrastructure with particular focus on the phenomenon of threshold effect within the transition zones of an engineering facility. The problem of locally variable stiffness of the railway infrastructure, which in turn could lead to the accelerated infrastructure degradation, is identified. Using the analytical and numerical background, the computational model is presented, based on which, it could be possible to determine the impact of the various rail support on the dynamic response of the enti

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Rudan, Smiljko, and Irena Radić Rossi. "Application of the State-Of-The Art Engineering Methods in Nautical Archaeology." Journal of Maritime & Transportation Science 2, Special edition 2 (2018): 113–22. http://dx.doi.org/10.18048/2018-00.113.

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Modern interdisciplinary projects are connecting researchers from seemingly unrelated fields, like naval engineering and archaeology. However, archaeological remnants of the present days, such as ancient ships and ceramic transport containers, were created by engineers and artisans of the past. It is therefore meaningful to consider their function and construction from an engineering point of view, complementing the archaeological research. One track of the interdisciplinary project Archaeology of Adriatic Shipbuilding and Seafaring (AdriaS), founded by the Croatian Science Foundation, aims at

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Li, Qiang, Jun Zhang, Rui Wang, Jing Liu, and Ping Li. "Typhoon-Resistant Performance Assessment of Coastal Rural Residential Keel Brick Walls Reinforced with High Ductility Concrete." Journal of Marine Science and Engineering 10, no. 11 (2022): 1766. http://dx.doi.org/10.3390/jmse10111766.

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The keel brick wall belongs to the rural residential exterior wall unique to the southeast coastal region of China. The wooden keel inside the wall and the external tie members can improve the stability of the whole wall. However, due to the age of construction, the wooden keel inside the existing residential keel brick walls has basically rotted and lost the tie with the external members, which seriously reduces the stability of the whole wall. Moreover, the collapse of keel brick walls caused by typhoons has become more and more frequent in recent years, seriously endangering the lives and p

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Wiharso, Ernik Yuliana, and Eddy Supriono. "PENGELOLAAN EKOWISATA MANGROVE BERDASARKAN DAYA DUKUNG EKOSISTEM DAN PERSEPSI MASYARAKAT." Jurnal Matematika Sains dan Teknologi 21, no. 1 (2020): 48–60. http://dx.doi.org/10.33830/jmst.v21i1.701.2020.

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Currently, mangrove ecotourism is interesting by the community. Berakit Village, Teluk Sebong Subdistrict, Bintan Regency, Riau Islands Province has a mangrove ecosystem that is used as an ecotourism area and is starting to be visited by many visitors. The aim of the study was to analyze the management of mangrove ecotourism based on the carrying capacity of the ecosystem and community perceptions. Data collection on mangrove potential was carried out through a mangrove inventory on 10 transect lines, perception and socio-economic data collection was carried out through interviews by giving qu

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Melancon, Michael. "The Ninth Circle: The Lena Goldfield Workers and the Massacre of 4 April 1912." Slavic Review 53, no. 3 (1994): 766–95. http://dx.doi.org/10.2307/2501519.

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"Stretching out ahead a frigid wasteland,…so thick a sheet of ice as never locked the Don up in its frozen source"Dante, Inferno, Canto XXXII, "The Ninth Circle"On a wintry early April day, far out in the Lena River basin to the north of Lake Baikal, a file of workers some three thousand strong marched determinedly out of the deforested hills along a road toward a company settlement on the Bodaibo River. Most walked three or four abreast on a road narrowed by the previous night's snow fall, as others trudged along a parallel railroad track a few meters away; within the sparse township, a small

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Okatenko, V. N., S. A. Skory та R. V. Zymovets. "KURGAN OF EARLY SСYTHIAN AGE IN KHARKIV REGION". Archaeology and Early History of Ukraine 27, № 2 (2018): 219–35. http://dx.doi.org/10.37445/adiu.2018.02.15.

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The publication presents the results of excavations of the mound 4 of the Dushnovo group of large-scale graveyard of the Scythian time near the city Lyubotin, Kharkiv region (the Seversky Donets basin). It is important to emphasize that no one kurgan in this group was previously investigated by archaeologists. Part of the embankment was seriously damaged by the local people’s economic activity, and before excavation it was a height of up to 0.90 m with a diameter of about 30 m. In the course of works the remains of a square (4 Ч 4 m) original ground-based facility, with an in-depth

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