Relevant bibliographies by topics / Medium density

Academic literature on the topic 'Medium density'

Author: Grafiati
Published: 10 December 2022
Last updated: 20 February 2023

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Journal articles on the topic "Medium density"

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Rosu-Finsen, Alexander, Michael B. Davies, Alfred Amon, Han Wu, Andrea Sella, Angelos Michaelides, and Christoph G. Salzmann. "Medium-density amorphous ice." Science 379, no. 6631 (February 3, 2023): 474–78. http://dx.doi.org/10.1126/science.abq2105.

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Amorphous ices govern a range of cosmological processes and are potentially key materials for explaining the anomalies of liquid water. A substantial density gap between low-density and high-density amorphous ice with liquid water in the middle is a cornerstone of our current understanding of water. However, we show that ball milling “ordinary” ice I h at low temperature gives a structurally distinct medium-density amorphous ice (MDA) within this density gap. These results raise the possibility that MDA is the true glassy state of liquid water or alternatively a heavily sheared crystalline state. Notably, the compression of MDA at low temperature leads to a sharp increase of its recrystallization enthalpy, highlighting that H 2 O can be a high-energy geophysical material.
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Coelho Junior, Luiz Moreira, Thaisa de Sousa Selvatti, Filipe Vanderlei Alencar, Márcio Lopes da Silva, and José Luiz Pereira de Rezende. "Global concentration of MDF (Medium Density Fiberboard) exports." Revista Chapingo Serie Ciencias Forestales y del Ambiente 25, no. 3 (August 30, 2019): 413–24. http://dx.doi.org/10.5154/r.rchscfa.2018.11.084.

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Park, Young-Kwon, Kyung-Seon Park, and Sung Hoon Park. "Fast pyrolysis of Medium-Density Fiberboard Using a Fluidized Bed Reactor." Applied Chemistry for Engineering 24, no. 6 (December 10, 2013): 672–75. http://dx.doi.org/10.14478/ace.2013.1099.

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Lijun Zhang, Xiaohua Xia, and Jiangfeng Zhang. "Medium Density Control for Coal Washing Dense Medium Cyclone Circuits." IEEE Transactions on Control Systems Technology 23, no. 3 (May 2015): 1117–22. http://dx.doi.org/10.1109/tcst.2014.2349793.

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Akgul, Mehmet, Yalcin Copur, Cengiz Guler, Ayhan Tozluoglu, and Umit Buyuksari. "Medium Density Fiberboard from Quercus robur." Journal of Applied Sciences 7, no. 7 (March 15, 2007): 1085–87. http://dx.doi.org/10.3923/jas.2007.1085.1087.

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Welch, John. "Demonstrating Wavelength Dependency on Medium Density." Physics Teacher 47, no. 7 (October 2009): 476. http://dx.doi.org/10.1119/1.3225516.

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Lin, Richard J. T., Jeroen van Houts, and Debes Bhattacharyya. "Machinability investigation of medium-density fibreboard." Holzforschung 60, no. 1 (January 1, 2006): 71–77. http://dx.doi.org/10.1515/hf.2006.013.

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Abstract For many applications, the perceived quality of a medium-density fibreboard (MDF) is influenced by the appearance of its machined surface. The behaviour of MDF has been studied by passing a cutting tool through it at a relatively low speed. A digital camera was used that travels synchronously with the tool and the deformation occurring in front of the tool tip was recorded. The magnification of approximately 30× also allows the individual fibres or bundles to be clearly observed. Photographic images have also been taken of the same machining process at a much higher speed, producing similar results and thus establishing the slow-speed study as a viable option. The machining of different MDF samples has been recorded using a cutting speed of 1.6 mm s−1 and varying depths of cut (0.5, 0.75 and 1.0 mm). The video recordings of various panels permit the identification of their peculiar machining characteristics. Unrefined particles play a major role during machining. The trends of results have also been confirmed by scanning electron micrographs. The board densities were found to have a major influence on the machinability characteristics of the boards.
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Narisawa, Ikuo, and Hiroyuki Nishimura. "Unstable cracking of medium density polyethylene." Journal of Materials Science 24, no. 4 (April 1989): 1165–68. http://dx.doi.org/10.1007/bf02397043.

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Adzila, Sharifah, Iis Sopyan, Siti Farius, Nurfahana Wahab, and Singh Ramesh. "Mechanochemical Synthesis of Hydroxyapatite Bioceramics through Two Different Milling Media." Key Engineering Materials 531-532 (December 2012): 254–57. http://dx.doi.org/10.4028/www.scientific.net/kem.531-532.254.

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This work presents the wet mechanochemical synthesis of hydroxyapatite (HA) powder through two different milling mediums. The effect of milling mediums on powder properties was investigated. Two types of medium: water and ethanol were chosen with 370 rpm milling speed for 15 hours time. Characterization of synthesized powders was accomplished by X-ray diffraction (XRD) analysis. The green compacts were prepared and sintered in atmosphere condition at various temperatures ranging from 900oC - 1300oC. The mechanical and physical properties were evaluated under Vickers microhardness test and density measurement. Both of synthesis mediums yielded HA phases in the synthesized powders as detected by the peaks obtained in XRD analysis. Compacts synthesized in water medium (M1) showed a maximum density, 99% sintered at 1000oC and 1300oC. However, the hardness in water medium is closely similar to the ethanol medium as a function of sintering temperature where the maximum hardness was found in compacts synthesized in ethanol medium (M2) sintered at 1300oC (5.8GPa). The microstructure observed from SEM analysis was in line with the density obtained as the surface of sintered compacts synthesized in water medium (M1) contained less pores with large grain growth.
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Hamed Mosavian, M. T., A. Bakhtiari, and S. Sahebian. "Tensile Creep Behavior of Medium-Density Polyethylene." Journal of Thermoplastic Composite Materials 24, no. 4 (December 31, 2010): 555–66. http://dx.doi.org/10.1177/0892705710393125.

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Dissertations / Theses on the topic "Medium density"

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Timlett, Rose. "Recycling in high and medium density housing." Thesis, University of Southampton, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.543417.

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Plosz, Laura Marlayne. "Multiplicity through abstraction, a design for medium-density housing." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0025/MQ50309.pdf.

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Eugênio, Rafael Augusto Pinholati [UNESP]. "Painéis de medium density fiberboard produzidos com adesivo alternativo." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/145030.

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O trabalho consistiu na produção de painéis de MDF (Medium Density Fiberboard) em escala laboratorial utilizando o adesivo PVA (Poliacetato de Vinila), variando suas concentrações e realizando misturas com a resina comumente empregada neste processo, o adesivo a base de uréia-fomaldeído, onde foi avaliado além das características físicas e mecânicas dos painéis produzidos, também teve o intuito de verificar o desprendimento de formaldeído para o ambiente quando aplicado juntamente com a resina uréia-fomaldeído, e a avaliação dos perfis de densidades dos traços. As amostras foram confeccionadas com fibra de eucalipto, onde as dosagens do adesivo PVA seguiram as seguintes proporções: 30%, 50% e 70%, e para efeito de comparação com as amostras produzidas com a mistura de PVA foram fabricadas provas em branco com 100% uréia-formaldeído. No total foram produzidas 16 amostras, quatro painéis de cada traço, e retirados os corpos de prova que posteriormente foram avaliados conforme a NBR 15316-2:2015 para as condições secas. Todos os insumos foram fornecidos pelo fabricante de painéis Duratex SA, e os testes foram realizados nos laboratórios da empresa. O adesivo PVA mostrou-se bastante favorável, apresentando grande compatibilidade com os demais componentes da formulação, apresentando potencial para fabricação de MDF. Diversos traços conseguiram atender os requisitos da norma, com destaque para módulo de ruptura (MOR), módulo de elasticidade (MOE), obtidos atraves do ensaio de flexão estática, e o teor de umidade. Houve também uma discreta redução na emissão de formol em dois traços (T3 e T4), e na avaliação dos perfis de densidade foi constatado que a formulação dos traços não impactou nas densidades médias da espessura dos painéis.
The work consisted in the production of MDF (Medium Density Fiberboard) in laboratory scale using PVA adhesive (Polyacetate Vinyl Chloride), varying their concentrations and performing mixtures with commonly used resin in this process, the adhesive base of ureafomaldehyde, which was evaluated in addition to the physical and mechanical characteristics of the panels produced, also aimed to check the formaldehyde release to the environment when applied together with resin urea-fomaldehyde, and evaluation of the densities of the features profiles. The samples were made from eucalyptus fibers where PVA adhesive doses followed the following proportions: 30%, 50% and 70%, and for the purpose of comparison with the samples produced with the mixture of PVA blank tests were made with 100 % ureaformaldehyde. In total, we produced 16 samples, four panels of each stroke, and removed the specimens which were then evaluated according to NBR 15316-2: 2015 for dry conditions. All inputs were provided by the panel manufacturer Duratex SA, and the tests were performed in the company's laboratories. PVA adhesive proved to be very favorable, with high compatibility with the other components of the formulation, with potential for the production of MDF. Many features were able to meet the standard requirements, particularly modulus of rupture (MOR), modulus of elasticity (MOE), obtained through the bending, and moisture content test. There was also a slight reduction in formaldehyde emissions by two dashes (T3 and T4), and evaluation of density profiles was found that the formulation of the traits did not affect the average thickness of the thickness of the panels.
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Eugênio, Rafael Augusto Pinholati. "Painéis de medium density fiberboard produzidos com adesivo alternativo /." Bauru, 2016. http://hdl.handle.net/11449/145030.

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Orientador: Ivaldo De Domenico Valarelli
Banca: Rosane Aparecida G. Basttistelle
Banca: Alexandre Jorge Duarte Souza
Resumo: O trabalho consistiu na produção de painéis de MDF (Medium Density Fiberboard) em escala laboratorial utilizando o adesivo PVA (Poliacetato de Vinila), variando suas concentrações e realizando misturas com a resina comumente empregada neste processo, o adesivo a base de uréia-fomaldeído, onde foi avaliado além das características físicas e mecânicas dos painéis produzidos, também teve o intuito de verificar o desprendimento de formaldeído para o ambiente quando aplicado juntamente com a resina uréia-fomaldeído, e a avaliação dos perfis de densidades dos traços. As amostras foram confeccionadas com fibra de eucalipto, onde as dosagens do adesivo PVA seguiram as seguintes proporções: 30%, 50% e 70%, e para efeito de comparação com as amostras produzidas com a mistura de PVA foram fabricadas provas em branco com 100% uréia-formaldeído. No total foram produzidas 16 amostras, quatro painéis de cada traço, e retirados os corpos de prova que posteriormente foram avaliados conforme a NBR 15316-2:2015 para as condições secas. Todos os insumos foram fornecidos pelo fabricante de painéis Duratex SA, e os testes foram realizados nos laboratórios da empresa. O adesivo PVA mostrou-se bastante favorável, apresentando grande compatibilidade com os demais componentes da formulação, apresentando potencial para fabricação de MDF. Diversos traços conseguiram atender os requisitos da norma, com destaque para módulo de ruptura (MOR), módulo de elasticidade (MOE), obtidos atraves do ensaio de flexã... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The work consisted in the production of MDF (Medium Density Fiberboard) in laboratory seade using PVA adhesive (Polyacetate Chloride), varying their concentration and perfomring mixtures with commonly used resin in this process the adhesive base of urea-fomaldehyde, which was evaluated in addition to the physical and mechanical characteristics of the panels produced, also aimed to check the formaldehyde release to the environment when applied together with resin urea-formaldehyde, and evaluation of the desnsities of the features profiles. The samples were made from eucalyptus fibers where PVA adhesive doses followed proportions: 30%, 50% and 70%, and for the purpose of comparison with the samples produced with the samples produced with the mixture of PVA blank tests were made with 100% urea-formaldehyde. In total, we produced 16 samples, four panels of each stroke, and removed the speciments which then evaluated according to NBR 15316-2:2015 for dry conditions. All inputs were provided by the panel manufacturer Duratex SA, and the tests were performed in the company's laboratories. PVA adhesive proved to be very favorable, with high compatibility with the other components of the formulation, with potential for the production of MDF. Many features were able to meet the standard requirements, particularly modulus of rupture (MOR), modulus of elasticity (MOE), obtained through the bending, and moisture content test. There was also a slight reduction in formaldehyde emissions by two dashes (T3 and T4), and evaluation of density profiles was found that the formulation of the traits did not affect the average thickness of the thickness of the panels
Mestre
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Ezzat, Showaib A. "Fatigue acceleration of crack growth in medium density polyethylene." Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1057004988.

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Alves, Thomas. "Managing medium density housing development a municipal case study /." Swinburne Research Bank, 2006. http://hdl.handle.net/1959.3/22539.

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Thesis (PhD) - Institute for Social Research, Swinburne University of Technology, 2006.
Thesis submitted in fulfillment of the requirements of the degree of Doctor of Philosophy, Institute for Social Research, Swinburne University of Technology, 2006. Typescript. 'December 2006'. Includes bibliographical references (p. 303-326).
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Chapman, Kelvin M. "A study of two aspects of medium density fibreboard manufacture." Thesis, University of Canterbury. Chemical and Process Engineering, 2004. http://hdl.handle.net/10092/7188.

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This thesis covers two aspects of MDF panel manufacture, In Part A of the thesis the development and application of a plant - based model of the blowline resin blending process used in the manufacture of Medium Density Fibreboard (MDF) is described, Experience quoted in the literature, operating experience in plants and data from specific plant trials have provided a number of insights into the process, but it was not until a calculation of the blowline steam flow became available that these disparate observations could be integrated into the comprehensive model of the blowline blending process that is described in this thesis, The steam flow in the blowline is calculated from a combined mass - energy balance over the refiner, allowing the steam velocity profile in the blowline to be established, In addition to the perspective that this data provides in understanding the various observations of the blowline blending process, it also shows a linkage between blowllne velocities and nozzle atomisation that prevents the use of high pressure atomising nozzles to create small resin droplets unless blowline velocities are high. It is concluded that this relationship is largely responsible for the higher resin contents that blowline resin addition requires when compared with MDF made using the dry blending process that is used for other wood - based composites. The refiner mass - energy balance shows that blowline conditions are sensitive to the refiner conditions, with relatively small changes in some parameters used to control the refiner operation changing the blowline steam flow significantly. This raises the possibility that changes in blowline conditions contribute to significant variability in the bonded fibre network that makes up MDF, Once the steam flow is known for a particular case, the blowline design can be optimised to provide the blending conditions that have been found to give a good blending result. This has been now been done in 25 MDF plants around the world; in 24 cases the blowline diameter was greater than the optimum for good blending. In the remaining case the diameter had been reduced, to the point where the choke flow limit was exceeded, leading to a fibre buildup on the dryer wall. The significance of resin droplet size, in terms of its effect on the strength properties of the panel and on the outcome of the blending process is discussed. The relationship between the mass of resin in each droplet and the mass of the fibre is significant in the blending process, particularly in the formation of resin spots. There are indications both from panel studies and from the resin performance in blowlines that have been optimised, that resin droplets should be smaller rather than larger. Resin atomisation, both in pressure and steam atomised nozzles and through interaction with the blowline steam flow is examined. This results in a wide range of resin droplet sizes, with the smallest from an effective atomising nozzle and the largest created by the interaction of the resin stream with a low steam velocity in the blowline. This wide range of conditions explains much of the variability in the blending outcome, ranging from good resin efficiency where resin droplets are small and poor resin efficiency where resin droplets are larger. The development of a steam - atomised resin injection nozzle is described. The nozzle is in commercial production with a number of units in service. Good resin efficiencies have been achieved, while the design has been successful in overcoming resin blocking problems that have occurred with other nozzle types. The blowline blending model has proved to be both robust and reliable. It was originally developed to reduce resin usage, with reductions of up to 25% of resin previously added having been achieved. In addition the model also provides solutions to a number of problems which have been shown to originate in the blowline. This thesis develops and extends the concepts used in the model to validate the approach and to provide insights into its further development. In Part B of the thesis the influence of temperature, moisture and fibre type on the stress response of a fibre mat to an applied strain was investigated to determine the impact of these variables on the development of the Vertical Density Profile (VDP) in MDF panels. There are a number of models of the in the literature that predict the development of VDP from the condition of the material in the press and the press conditions. While these models, developed for particleboard, claim to be sufficiently general to be extended to cover the case of MDF, there are features of the MDF profile that suggest that this might not be the case. This investigation was set up to determine the stress - strain response of MDF fibre under the conditions encountered in the hot pressing operation. A small circular press was designed so that it could be mounted in a compression testing machine, allowing the stress strain data to be recorded. The press was constructed so that heated and humidified air could be passed through the mat so that uniform temperature and moisture conditions could be established through the mat prior to the stress - strain measurements being made. The press was then closed to determine the stress - strain response of the fibre. After the press was closed it was held in that position and the relaxation response of the fibre mat measured under conditions where the compliance of the press imposed a small continuing strain on the mat as the relaxation of the fibre reduced its compressive resistance. The fibre response at moisture levels of 0% - 20% and at temperatures up to 100°C was measured although limitations of the conditioning limited the moisture content that could be reached at the higher temperature ranges. Two fibre types, prepared from high and low density P. Radiata wood, showed a very similar stress – strain response. The density stress response for the fibre mat appears to follow that for a foam compression model where the resistance to compression at constant temperature and moisture is proportional to the square of the density ratio. An extension to the cellular foam theory to the situation of a discrete fibre mat is proposed. The temperature and moisture effect on the compressive resistance of the fibre mat appears to follow established relationships for solid wood, although the inability to reach the high temperature - high moisture condition excludes this important area from the analysis. A modified stress relaxation response is characterised by an increase in density that, at constant moisture content, appears to be independent of the density of the mat, over the range encountered in the development of the density profile. The moisture effect on the stress relaxation response appears to be more significant than that due to temperature. It is concluded that temperature and moisture content gradients established early in the press are the most significant factors in determining the vertical density profile through the MDF panel. The squared relationship with density implies that these gradients are particularly important in the generation of the high density of the faces of the VDP. The stress relaxation effect provides a uniform increase in density through the mat, modified only by a moisture response which increases this effect where moisture contents are high. The data provide insights into the relative effects of temperature, moisture and density as these change in the pressing of MDF fibre, in a form that can be incorporated in a model of the pressing process and also used by MDF press operators to aid in their understanding of the processes that lead to generation of the VDP in commercial MDF operations.
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Palmer, Simon J. "Stabilisation of medium density polyethylene gas pipe in service applications." Thesis, Manchester Metropolitan University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329807.

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Kocabas, Zeynep. "Forecasting Of Ionospheric Electron Density Trough For Characterization Of Aerospace Medium." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610445/index.pdf.

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Modeling the ionosphere, where the effects of solar dynamo becomes more effective to space based and ground borne activities, has an undeniable importance for telecommunication and navigation purposes. Mid-latitude electron density trough is an interesting phenomenon in characterizing the behavior of the ionosphere, especially during disturbed conditions. Modeling the mid-latitude electron density trough is a very popular research subject which has been studied by several researchers until now. In this work, an operational technique has been developed for a probabilistic space weather forecast using fuzzy modeling and computer based detection of trough in two steps. First step is to detect the appropriate geomagnetical conditions for trough formation, depending on the values of 3-h planetary K index (Kp), magnetic season, latitude and local time, by using fuzzy modeling technique. Once the suitable geomagnetic conditions are detected, second step is to find the lower latitude position (LLP) and minimum position (MP) of the observed trough being two main identifiers of the mid-latitude electron density trough. A number of case studies were performed on ARIEL 4 satellite data, composed of different geomagnetic, annual and diurnal characteristics. The results obtained from fuzzy modeling show that the model is able to detect the appropriate conditions for trough occurrence and the trough shape was effectively identified for each selected case by using the predefined descriptions of mid-latitude electron density trough. The overall results are observed to be promising.
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Du, Wei 1962. "A study of medium-rise high-density housing : Beijing, 1979-1990." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22542.

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In China, huge population and limited arable land resources constitute one of the basic contradictions in urban mass housing design. As a stereotype, medium-rise apartment buildings were constructed to attain high densities all over the country during the 1980s. The extensive use of the housing typologies caused problems in many aspects. This reflects the poverty of architectural solutions and the consequences of the socio-economic systems of the country.
Focusing on the aspects of single building design and site planning, this thesis analyses the methods to reach high building densities in medium-rise mass housing design in Beijing from 1979 to 1990. The study is conducted through the review of the socio-economic issues and the introduction of mass housing design of the country. It intends to see the interrelationships between ways to attain high building densities and the socio-economic backgrounds.
The research indicates that methods to reach high building densities are many. Ways used in Beijing during 1980s were based on the socio-economic system at the time being. These ways are not appropriate in terms of the unique urban context of the city and could be thus replaced by others.
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Books on the topic "Medium density"

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Wendy, Sarkissian, ed. Housing as if people mattered: Site design guidelines for medium-density family housing. Berkeley: University of California Press, 1986.

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H, King Joseph. Interplanetary medium data book. Greenbelt, Md: National Space Science Data Center (NSSDC)/World Data Center-A for Rockets and Satellites (WDC-A-R&S), National Aeronautics and Space Administration, Goddard Space Flight Center, 1994.

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H, King Joseph. Interplanetary medium data book. Greenbelt, Md: National Space Science Data Center (NSSDC)/World Data Center A for Rockets and Satellites (WDC-A-R&S), National Aeronautics and Space Administration, Goddard Space Flight Center, 1989.

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Ltd, Tract Consultants Pty. Medium-density housing: Final report, 1990 : a study for the Department of Planning and Urban Growth. [Melbourne, Vic.]: The Department, 1990.

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Seavert, Clark F. Orchard economics: The costs and returns of establishing and producing medium density Braeburn apples on M7a rootstock utilizing a three wire trellis system in the Hood River Valley. [Corvallis, Or.]: Oregon State University Extension Service, 1995.

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executive, Health and safety. Medium Density Fibreboard. Health and Safety Executive (HSE), 1999.

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Establishment, Building Research, ed. Medium density fibreboard. Watford: Building Research Establishment, 1998.

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Medium density fibreboard (MDF). Sudbury: HSE Books, 1999.

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An assessment of exterior medium density fibreboard (MDF). Watford: Building Research Establishment, 1996.

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The 2006-2011 World Outlook for Medium Density Fiberboard. Icon Group International, Inc., 2005.

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Book chapters on the topic "Medium density"

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Bashford, David. "Medium Density Polyethylene (MDPE)." In Thermoplastics, 150–51. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1531-2_17.

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Borsuk, Teresa. "Medium density (90–250dph)." In The Housing Design Handbook, 136–49. Second edition. | New York : Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9780203704516-11.

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Bhushan, Bharat. "Tribology of Magnetic Head-Medium Interface." In High Density Digital Recording, 281–314. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1636-7_10.

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Napier-Munn, T. J., I. A. Scott, R. Tuteja, J. J. Davis, and T. Kojovic. "Prediction of Underflow Medium Density in Dense Medium Cyclones." In Hydrocyclones, 191–214. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-015-7981-0_13.

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Varga, Dániel, Péter Halácsy, András Kornai, Viktor Nagy, László Németh, and Viktor Trón. "Parallel corpora for medium density languages." In Recent Advances in Natural Language Processing IV, 247–58. Amsterdam: John Benjamins Publishing Company, 2007. http://dx.doi.org/10.1075/cilt.292.32var.

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Vazquez-Loureiro, P., F. Salgado, A. Rodríguez Bernaldo de Quirós, and R. Sendón. "Medium Density Fiberboard as Food Contact Material." In Food Packaging, 347–68. First edition. | Boca Raton, FL : CRC Press, 2020.: CRC Press, 2020. http://dx.doi.org/10.1201/9780429322129-13.

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Sivalingam, Sivakumar, A. Devaraju, Vignesh Asokan, and Yogesh Vaidhyanathan. "Optimization of Ultrasonically Welded High-Density Polyethylene with Medium-Density Polyethylene." In Lecture Notes in Mechanical Engineering, 493–506. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0244-4_48.

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Franco, José, Guillermo Tenorio-Tagle, and Peter Bodenheimer. "Expansion of HII regions in density gradients." In Structure and Dynamics of the Interstellar medium, 96–103. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/bfb0114844.

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Bauhoff, W. "Signatures of density-dependent forces in intermediate energy proton scattering." In Medium Energy Nucleon and Antinucleon Scattering, 191–207. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/3-540-16054-x_167.

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Roberts, W. W., and M. A. Hausman. "Star Formation in a Density-Wave-Dominated, Cloudy Interstellar Medium." In The Milky Way Galaxy, 567–70. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5291-1_113.

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Conference papers on the topic "Medium density"

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Yalovenko, S. N. "GRAVITY AND DENSITY OF THE MEDIUM." In X International Conference ”Science and Society - Methods and Problems of Practical Application". Prague: Premier Publishing s.r.o., 2020. http://dx.doi.org/10.29013/x-conf-canada-10-49-60.

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Stroth, Joachim. "Experiments on Hadrons in Finite Density Medium." In Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018). Journal of the Physical Society of Japan, 2019. http://dx.doi.org/10.7566/jpscp.26.011013.

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KOENE, L., and F. R. BROEKHUIS. "Bullet Penetration into Medium Density Fibreboard Targets." In 31st International Symposium on Ballistics. Lancaster, PA: DEStech Publications, Inc., 2019. http://dx.doi.org/10.12783/ballistics2019/33172.

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Sato, K., Y. Yoshida, H. Ueno, H. Kanai, I. Okamoto, and Y. Uematsu. "Rigid disk medium for high density recording." In IEEE International Magnetics Conference. IEEE, 1999. http://dx.doi.org/10.1109/intmag.1999.837264.

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Li, Chunyuan, Xitao Wang, and Wenxia Yuan. "Properties of Two New Medium Temperature Solders." In High Density Design Packaging and Microsystem Integration, 2007 International Symposium on. IEEE, 2007. http://dx.doi.org/10.1109/hdp.2007.4283583.

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Cao, Jun, Xiumei Zhang, and Yaqiu Liu. "Fuzzy Control of Medium Density Fiberboard Hot-Pressing." In 2007 2nd IEEE Conference on Industrial Electronics and Applications. IEEE, 2007. http://dx.doi.org/10.1109/iciea.2007.4318769.

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Qiu Licun and Xu Guangbin. "Measurement of magnetic medium density using phasor method." In 2010 8th World Congress on Intelligent Control and Automation (WCICA 2010). IEEE, 2010. http://dx.doi.org/10.1109/wcica.2010.5555080.

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Prabhu, A. N. "Low, Medium And High Circuit Density Multichip Modules." In Electro International, 1991. IEEE, 1991. http://dx.doi.org/10.1109/electr.1991.718213.

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Yi Zheng, Zhongli Pan, Ruihong Zhang, Bryan M. Jenkins, and Sherry Blunk. "Medium-density Particleboard from Saline Jose Tall Wheatgrass." In 2005 Tampa, FL July 17-20, 2005. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2005. http://dx.doi.org/10.13031/2013.19578.

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Kornai, András, Péter Halácsy, Viktor Nagy, Csaba Oravecz, Viktor Trón, and Dániel Varga. "Web-based frequency dictionaries for medium density languages." In the 2nd International Workshop. Morristown, NJ, USA: Association for Computational Linguistics, 2006. http://dx.doi.org/10.3115/1628297.1628298.

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Reports on the topic "Medium density"

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Birchmore, Roger. Medium-density Dwellings in Auckland and the Building Regulations. Unitec ePress, July 2018. http://dx.doi.org/10.34074/ocds.0822.

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National thermal standards have historically been set to minimise winter heating energy in detached houses. It is uncertain whether these standards are optimal for the increasing number of joined, medium-density dwellings when summer and winter conditions are considered. Using freely available software, annual heating energy use and summertime peak temperatures were calculated for a number of versions of detached and joined dwellings offering the same occupied volume and window areas. Initial results indicated that, as expected, the joined dwellings required less heating energy. The detached house exhibited a higher peak summertime temperature but a lower overall average daily temperature. Interventions such as changing insulation, glazing areas and ventilation were calculated to reduce summertime temperatures in the joined dwelling. Increasing ventilation provided the greatest improvement particularly during the sensitive sleeping hours. Changes to clauses H1 Energy Efficiency, G4 ventilation and G6 Airborne and Impact Sound are recommended if these early findings are confirmed in a more complex simulation.
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Kilgo, III, Marvin Moses. The influence of ambient medium density on laser ablation processes. Office of Scientific and Technical Information (OSTI), November 1995. http://dx.doi.org/10.2172/374129.

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Silberstein, Samuel. Predicting formaldehyde concentrations in manufactured housing resulting from medium-density fiberboard. Gaithersburg, MD: National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nbs.ir.88-3761.

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Hrubesh, L. Development of low density silica aerogel as a capture medium for hyper-velocity particles. Office of Scientific and Technical Information (OSTI), October 1989. http://dx.doi.org/10.2172/5362334.

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Puttanapong, Nattapong, Arturo M. Martinez Jr, Mildred Addawe, Joseph Bulan, Ron Lester Durante, and Marymell Martillan. Predicting Poverty Using Geospatial Data in Thailand. Asian Development Bank, December 2020. http://dx.doi.org/10.22617/wps200434-2.

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This study examines an alternative approach in estimating poverty by investigating whether readily available geospatial data can accurately predict the spatial distribution of poverty in Thailand. It also compares the predictive performance of various econometric and machine learning methods such as generalized least squares, neural network, random forest, and support vector regression. Results suggest that intensity of night lights and other variables that approximate population density are highly associated with the proportion of population living in poverty. The random forest technique yielded the highest level of prediction accuracy among the methods considered, perhaps due to its capability to fit complex association structures even with small and medium-sized datasets.
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Habib, Ayman, Darcy M. Bullock, Yi-Chun Lin, and Raja Manish. Road Ditch Line Mapping with Mobile LiDAR. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317354.

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Maintenance of roadside ditches is important to avoid localized flooding and premature failure of pavements. Scheduling effective preventative maintenance requires mapping of the ditch profile to identify areas requiring excavation of long-term sediment accumulation. High-resolution, high-quality point clouds collected by mobile LiDAR mapping systems (MLMS) provide an opportunity for effective monitoring of roadside ditches and performing hydrological analyses. This study evaluated the applicability of mobile LiDAR for mapping roadside ditches for slope and drainage analyses. The performance of alternative MLMS units was performed. These MLMS included an unmanned ground vehicle, an unmanned aerial vehicle, a portable backpack system along with its vehicle-mounted version, a medium-grade wheel-based system, and a high-grade wheel-based system. Point cloud from all the MLMS units were in agreement in the vertical direction within the ±3 cm range for solid surfaces, such as paved roads, and ±7 cm range for surfaces with vegetation. The portable backpack system that could be carried by a surveyor or mounted on a vehicle and was the most flexible MLMS. The report concludes that due to flexibility and cost effectiveness of the portable backpack system, it is the preferred platform for mapping roadside ditches, followed by the medium-grade wheel-based system. Furthermore, a framework for ditch line characterization is proposed and tested using datasets acquired by the medium-grade wheel-based and vehicle-mounted portable systems over a state highway. An existing ground filtering approach is modified to handle variations in point density of mobile LiDAR data. Hydrological analyses, including flow direction and flow accumulation, are applied to extract the drainage network from the digital terrain model (DTM). Cross-sectional/longitudinal profiles of the ditch are automatically extracted from LiDAR data and visualized in 3D point clouds and 2D images. The slope derived from the LiDAR data was found to be very close to highway cross slope design standards of 2% on driving lanes, 4% on shoulders, as well as 6-by-1 slope for ditch lines. Potential flooded regions are identified by detecting areas with no LiDAR return and a recall score of 54% and 92% was achieved by the medium-grade wheel-based and vehicle-mounted portable systems, respectively. Furthermore, a framework for ditch line characterization is proposed and tested using datasets acquired by the medium-grade wheel-based and vehicle-mounted portable systems over a state highway. An existing ground filtering approach is modified to handle variations in point density of mobile LiDAR data. Hydrological analyses, including flow direction and flow accumulation, are applied to extract the drainage network from the digital terrain model (DTM). Cross-sectional/longitudinal profiles of the ditch are automatically extracted from LiDAR data, and visualized in 3D point clouds and 2D images. The slope derived from the LiDAR data was found to be very close to highway cross slope design standards of 2% on driving lanes, 4% on shoulder, as well as 6-by-1 slope for ditch lines. Potential flooded regions are identified by detecting areas with no LiDAR return and a recall score of 54% and 92% was achieved by the medium-grade wheel-based and vehicle-mounted portable systems, respectively.
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Griffin, Andrew, Sean Griffin, Kristofer Lasko, Megan Maloney, S. Blundell, Michael Collins, and Nicole Wayant. Evaluation of automated feature extraction algorithms using high-resolution satellite imagery across a rural-urban gradient in two unique cities in developing countries. Engineer Research and Development Center (U.S.), April 2021. http://dx.doi.org/10.21079/11681/40182.

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Feature extraction algorithms are routinely leveraged to extract building footprints and road networks into vector format. When used in conjunction with high resolution remotely sensed imagery, machine learning enables the automation of such feature extraction workflows. However, many of the feature extraction algorithms currently available have not been thoroughly evaluated in a scientific manner within complex terrain such as the cities of developing countries. This report details the performance of three automated feature extraction (AFE) datasets: Ecopia, Tier 1, and Tier 2, at extracting building footprints and roads from high resolution satellite imagery as compared to manual digitization of the same areas. To avoid environmental bias, this assessment was done in two different regions of the world: Maracay, Venezuela and Niamey, Niger. High, medium, and low urban density sites are compared between regions. We quantify the accuracy of the data and time needed to correct the three AFE datasets against hand digitized reference data across ninety tiles in each city, selected by stratified random sampling. Within each tile, the reference data was compared against the three AFE datasets, both before and after analyst editing, using the accuracy assessment metrics of Intersection over Union and F1 Score for buildings and roads, as well as Average Path Length Similarity (APLS) to measure road network connectivity. It was found that of the three AFE tested, the Ecopia data most frequently outperformed the other AFE in accuracy and reduced the time needed for editing.
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Ozbek, Ali, and Bernard C. Levy. Simultaneous Linearized Inversion of Velocity and Density Profiles for Multidimensional Acoustic Media. Fort Belvoir, VA: Defense Technical Information Center, May 1989. http://dx.doi.org/10.21236/ada459643.

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Spence, R. D., I. L. Morgan, and D. R. Trotter. Evaluation of density separation and other treatment methods for plastic media blasting (PMB) waste. Office of Scientific and Technical Information (OSTI), May 1995. http://dx.doi.org/10.2172/82523.

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Peterson, Brian, J. Beeco, Sharolyn Anderson, and Damon Joyce. Exploring spatial patterns of overflights at Mount Rushmore National Memorial. National Park Service, June 2022. http://dx.doi.org/10.36967/nrr-2293663.

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The purpose of this study was to explore the spatial patterns of overflights at Mount Rushmore National Memorial (Mount Rushmore). Overflights were analyzed from August 15th, 2020 to May 15th, 2021 using Automatic Dependent Surveillance-Broadcast (ADS-B) and radar data from L3Harris. The first phase of analysis focused on all overflights and found a high concentration of overflights fly above Mount Rushmore. The second phase of analysis focused on low-level overflights that fly below 9,000ft mean sea level (MSL), which showed that many low-level overflights fly in a ring-shaped pattern around Mount Rushmore. The third phase of analysis removed all overflights known to not be air tours. Point density analysis was conducted using waypoints segmented into 500ft above ground level (AGL) altitude intervals, which showed that the density of overflights varied by altitude interval and the 1,000-1,500ft AGL range had the highest density of overflights around and above Mount Rushmore. This altitude interval also had the highest number of waypoints. It was also determined that the aircraft owners who fly the most helicopter routes fly at mean and median altitudes less than 1,600ft AGL. This information can be used for planning and management purposes and this study serves as a resource for future research that intends to use more advanced analytics.
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