Relevant bibliographies by topics / Surface physic

Academic literature on the topic 'Surface physic'

Author: Grafiati
Published: 14 March 2023
Last updated: 1 April 2023

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Journal articles on the topic "Surface physic"

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Yakub, Ibrahim, Masita Mohammad, and Zahira Yaakob. "Effects of Zinc Chloride Impregnation on the Characteristics of Activated Carbon Produced from Physic Nut Seed Hull." Advanced Materials Research 626 (December 2012): 751–55. http://dx.doi.org/10.4028/www.scientific.net/amr.626.751.

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Activated carbon was developed from physic nut seed hull through chemical activation using zinc chloride. The characteristics of raw physic nut seed hull as well as char and activated carbon from physic nut seed hull were obtained to study the effects of ZnCl2 impregnation. The comparisons of the characteristics that included elemental composition, surface morphology, surface area, surface functional groups and zeta potential were made on the three samples. The study found that ZnCl2 had positive effects towards developing activated carbon including increasing the carbon content, surface area and pore volume besides improving the microporosity and surface charge distribution of the carbon.
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Wisha, Ulung Jantama, Semeidi Husrin, and Gegar Sapta Prasetyo. "Hydrodynamics of Bontang Seawaters: Its Effects on the Distribution of Water Quality Parameters." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 21, no. 3 (August 29, 2016): 123. http://dx.doi.org/10.14710/ik.ijms.21.3.123-134.

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Bontang is a crowded with residential and industrial activities which produce heat waste into surrounding waters. This condition may cause environmental problems, and changes in water condition. Knowledge about dynamics of physic and chemical waters condition in Bontang city is very important as an effort to address environmental issues as part of coastal zone management and protection. The aim of this research is to understand hydrodynamic characteristics (tide and current) and the influence to distribution of physics and chemical in Bontang waters base on primary data (current and tide during one month, physics and chemicals waters data taken by in situ) and secondary data (bathymetry and tide forecasting). Hydrodynamic simulation is based on MIKE 21 and supported by CD-Oceanography and WR plot. The results show that the current is dominant move toward the Southwest and Northeast with current speed ranged from 0-0,22 m.s-1. The results of hydrodynamic simulation in the surface water show that the current move base on tide movement with current speed ranged from 0-0,24 m.s-1. The results of physic and chemical concentration is analysed by ArcGIS 10 to know spatial distribution of all parameters. Surface temperature ranged from 29-31,8oC, surface density ranged from 20-20,6 ppm, salinity ranged from 33,1-33,5 ppm, dissolve oxygen concentration ranged from 0,078-0,11 ppm. Distribution of all physic and chemical parameters is influenced by current and tide movement. Keywords: current, numerical model, water quality, Bontang waters
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Grigorieva, Iya Yu, Andrey V. Morozov, and Marina A. Gladchenko. "PHYSICO-CHEMICAL PROCESSES OCCURRING ON THE SURFACE OF QUARTZ SAND DURING CONTAMINATION AND THEIR IMPACT ON THE PHYTOTESTING RESULTS." Gruntovedenie 2, no. 19 (2022): 27–39. http://dx.doi.org/10.53278/2306-9139-2022-2-19-27-39.

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Contamination of sandy soils with liquid hydrocarbons (oil and products of its processing), along with salinization, is a characteristic process developed in vast territories associated with oil production. On the example of model experiments using natural quartz sand, the influence of physic-chemical processes on the growth and development of higher plants during fitotesting is considered. The observed physico-chemical processes occur when liquid hydrocarbon and salt pollution enter the soil. We have shown the multidirectional influence of several combinations of pollutants and their amount on the biological parameters of the test culture of white mustard (Sinapis alba L.). Based on the analysis of theoretical concepts, a possible mechanism for regulating the processes occurring at the phase interface when the used combinations of pollutants enter the studied soil system is described. It is suggested that the main contribution to the development of physic-chemical processes in the investigated sand system will be made by the presence of amorphous silica
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Danchenko, Yuliya, Artem Kariev, Vladimir Lebedev, Elena Barabash, and Tatyana Obizhenko. "Physic-Mechanical Properties of Composites Based on Secondary Polypropylene and Dispersed of Plant Waste." Materials Science Forum 1006 (August 2020): 227–32. http://dx.doi.org/10.4028/www.scientific.net/msf.1006.227.

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The physic-mechanical properties of filled composites based on secondary polypropylene are investigated. As fillers the dispersed wastes of processing of agricultural plants - buckwheat and oat husk, as well as needles flour and wood flour were used. Water absorption, abrasion, impact strength and bending strength of composites were investigated. It has been proven that oat and buckwheat husks can be effectively used in composites based on secondary polypropylene and replace traditional wood fillers. It has been shown that the physic-chemical properties of the filled composites depend on the structure and physicochemical interactions on the phase separation surface, as well as on the surface properties of the filler particles. It is established that for the production of filled composites with improved physic-mechanical characteristics it is necessary to use fillers with small specific surface and concentration of surface functional groups, and the acid-base characteristic of the surface should be closer to neutral. It is shown that these conditions provide for the formation of a uniform structure of the filled composite with less internal stresses.
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Pechyen, Chiravoot, Duangdao Aht-Ong, Duangduen Atong, and Viboon Sricharoenchaikul. "Physicochemical Properties of Carbons Prepared from Physic Nut Waste by Phosphoric Acid and Potassium Hydroxide Activations." Materials Science Forum 561-565 (October 2007): 1719–22. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.1719.

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Char derived from pyrolysis of physic nut waste at 400-800°C was used for the preparation of activated carbon by chemical impregnation of phosphoric acid and potassium hydroxide. The original char exhibited the BET surface area in the range of 120-250 m2·g-1. The surface area increased to 480 and 532 m2·g-1 when activated with H3PO4 and KOH, respectively. Equilibrium adsorption data was found to be best represented by the Langmuir isotherm with maximum monolayer adsorption capacity of 560.13 mg·g-1 at 30°C. The adsorption capacity of the physic nut residue activated carbon was comparable to commercial activated carbon.
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Escalante-Gutiérrez, Danae Carolina, Eduardo Ordóñez-Regil, José Ortíz-Landeros, and María Guadalupe Almazán-Torres. "Sorption of U(VI) onto ZrSiO4 gamma irradiated and functionalized with phytic acid." Radiochimica Acta 108, no. 11 (November 26, 2020): 847–57. http://dx.doi.org/10.1515/ract-2020-0018.

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AbstractIn the suitability assessment of candidate materials as engineering barriers for a Deep Geological Repository (DGR), new studies concerned with zirconium silicate have been carried out. The zirconium silicate extracted from beach sand, was submitted to gamma irradiation in order to evaluate its structural stability and then functionalized with phytic acid (IP6) and measured its sorption capacity vis-a-vis uranium. The purified, irradiated and functionalized material was then characterized by several analytical techniques. The surface parameters including the surface area and density of surface sites were also determined. The results obtained from physic-chemical characterization showed that there were no significant changes in the structure of zirconium silicate after its gamma-irradiation. These results are consistent with those of sorption experiments. Uranium (VI) sorption capacity of zirconium silicate is increased in the presence of phytic acid and remained constant after its exposition to high doses of gamma-radiation (10 and 30 MGy). These results show that the IP6-functionalized zirconium silicate can be used as engineering barriers for a DGR.
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Adam, A. M., P. Petkov, M. Ataalla, Haifa Alqannas, Bandar Alruqi, and Abeer Altowyan. "Structure, thermal and physic-chemical properties of some chalcogenide alloys." Thermal Science, no. 00 (2022): 195. http://dx.doi.org/10.2298/tsci221001195a.

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Bulk products of crystalline Bi2Se3-xTex alloys (x =0.0, 0.1, 0.3, 0.5) were prepared using simple melting synthesis. Crystalline features, microstructure and surface morphologies of the synthesized samples were examined via x-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive x-ray spectrometer. Elemental distribution was studied by energy dispersive analysis of X-ray (EDAX) spectroscopy. Polycrystalline of rhombohedral crystal structure was observed for the concerned samples. Perfect crystallinity and micro-scalability of the prepared were also reflected by the physic-chemical properties of each sample. Thermal behavior was studied throughout differential scanning calorimetry and thermogravimetric analysis showing that the samples are of high stability over high temperature range. Physic-chemical properties were determined in terms of experimental density. These properties were compactness value, molar volume and the percentage of free volume. Density of Bi2Se3 alloy was obtained at 7.37 gm/cm3. Te doping enhanced the density of the Bi2Se3-xTex system. The most Te doped alloy showed density of 9.018 gm/cm3. All other physic-chemical properties showed strong dependence on the Tea amounts in the system.
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Perperi, Liudmyla, Vladimir Gugnin, and Ganna Goloborodko. "SIMULATION MODELING OF THE PROCESS OF DETERMINATION OF SURFACE ROUGHNESS PARAMETERS USING COMPUTER MEASURING TECHNOLOGIES." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 1(11) (May 18, 2022): 30–37. http://dx.doi.org/10.20998/2413-4295.2022.01.05.

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Modern trends in higher education are aimed at the fact that the educational process should become more dynamic and flexible, including the training of engineering specialists in higher educational institutions. During the pandemic caused by COVID-19, most institutions switched to distance learning, in connection with this, the use of virtual instruments created using the LabVIEW graphical programming environment is of particular relevance for practical and laboratory work. Such instruments allow you to conduct classes remotely. The article describes the designed virtual instrument for simulation modeling of the process of determining the surface roughness parameters. To implement this task, a model for calculating the surface roughness parameters is proposed, which takes into account the influence of the geometric parameters of the metal cutting tool and the physic of cutting process during workpiece processing. The modeling process of roughness measurement is carried out in two stages. At the first stage, the movement of the sensor of device the along the scanned surface and the sound of the device drive are simulated. At the second stage, the surface roughness parameters are calculated. The surface roughness profile is a superposition of the theoretical profile which is obtained by copying the profile of the cutting tool tip on the machined surface and random distortion of the profile due to the physic of cutting process. For the purpose of obtaining the coordinates of the theoretical profile points of the workpiece after processing it, an algorithm has been developed for calculating the current position of the profile point depending on the ratio of the feed values and the curvature radius tip of the cutting tool. Changing the position of the current point of the theoretical surface profile due to the impact of the physic of cutting process is taken into account by introducing random oscillations superimposed on the surface profile, which are generated by a random number generator according to the law of equal probability. A technique for processing an array of profile points coordinates to obtain surface roughness numerical parameters Rz, Ra and Rmax is described. The use of computer measuring technologies for solving tasks in the field of engineering using information and measuring equipment allows students to develop the skills to perform technical measurements, receive, analyze and critically evaluate the obtained measurement results
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Guo, Hai Fu, Xiang Li, Zhi Sheng Chen, Peng Yan, and Shu Min Li. "Preparation and Characterization of Rare Earth Solid Superacids SO42-/TiO2-SnO2-Dy2O3." Advanced Materials Research 287-290 (July 2011): 1659–65. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.1659.

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A new rare earth solid superacids catalyst SO42-/TiO2-SnO2-Dy2O3 was prepared by coprecipitation-impregnating method, and the optimum preparation conditions were obtained. The physic- chemical properties of the catalyst was characterized by FTIR, TG-DTA, XRD and BET. The results showed the prepared catalyst is superacid with good thermal stability and high specific surface area. The sulfuric groups were proved to be chelated and bridgingly connected on the surface of the catalyst.
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Masyuk, A. S., D. S. Katruk, and V. Ye Levytskyi. "Modified polyvinyl chloride composites with metal-containing polymer-silicate fillers." Chemistry, Technology and Application of Substances 4, no. 1 (June 1, 2021): 186–90. http://dx.doi.org/10.23939/ctas2021.01.186.

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The influence of the nature of the metal-containing polymer-silicate fillers on morphology, surface hardness, Vicat softening point and elastic-plastic properties of PVC plasticates has been researched. The influence of polymer-silicate fillers on physic-mechanical and thermal properties and the conditions directional regulation of technological and operational properties of modified composites has been established.
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Dissertations / Theses on the topic "Surface physic"

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SAVINO, UMBERTO. "Physical properties of metal-oxide surfaces for CO2 valorisation." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2823956.

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Zhang, Yancheng. "Numerical simulation approaches and methodologies for multi-physic comprehensions of titanium alloy (Ti-6Al-4V) CUTTING." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00708761.

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The objective of this study is to model material removal with cutting tool in the case of the machining of Titanium alloy (Ti-6Al-4V) and to bring a multi-physic comprehension of chip formation and the tool/workpiece interaction by adopting finite element approaches and methodologies. For that, the present contribution begins by a macroscopic modeling of the orthogonal cutting process. The cut material behavior considered is supposed based on JC law. Moreover, in order to simulate properly the chip genesis, the material fracture energy concept is adopted for controlling the material damage evolution. This allows capturing the shear strain localization and consequently the chip segmentation for a given set of cutting parameters. The frictional contact model considers the influence of temperature on the limiting shear stress at the tool/chip interface. As a result, this reliable model has the capability to simulate the cutting process even with high coefficient of friction and with large cutting edge radius. The parametric study carried out by referring to this model shows a very interesting corroboration with experimental results. In a second step, the present research work presents a material microstructure-level cutting model (MML cutting model) for cutting simulation. The crystal plasticity theory is adopted for modeling the cutting of the Titanium alloy Ti-6Al-4V in orthogonal case. In this model, the grains of the studied material are explicitly considered, and their orientation angles and slip system strength anisotropy are considered as the main source of the microstructure heterogeneity in the cutting material. To simulate the material degradation process, the continuum intra-granular damage and discrete cohesive zone inter-granular damage models are developed, wherein the zero thickness cohesive elements are implemented to simulate the bond between grain interfaces. The material model is validated by a comparison of compression tests from literature. Finally, simulation results demonstrate the possibility to capture the influence of the microstructure on the material removal in terms of chip formation. It is demonstrated that the grain orientation angle plays an important role for the chip segmentation and its periodicity during the cutting process. This certainly can affect the evolution of the cutting force. Additionally, the surface integrity is discussed based on the MML cutting model for different cutting speeds and feed rates. Indeed, a parametric study shows that the surface integrity is seriously affected by the machining parameters, and the affected region is limited within three layer grains for the present MML cutting model.
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Mansfield, Mark. "Surface stress and reconstructions on metal surfaces." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359866.

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Pinheiro, Analia Maria. "Desenvolvimento de nÃctares mistos à base de caju (Anacardium occidentale L) e aÃaà (Euterpe oleracea Mart.)." Universidade Federal do CearÃ, 2008. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2114.

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FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico
O setor que vem crescendo nos Ãltimos anos à o de bebidas. Em todos os paÃses os levantamentos estatÃsticos revelam nÃmeros crescentes de consumo, tanto per capita quanto global. Esses valores sÃo mais expressivos quando se refere a bebidas obtidas de frutas, pelo fato das mesmas se constituÃrem fontes importantes de vitaminas e minerais para a dieta humana, alÃm de seus atrativos sabores. O Norte e Nordeste do Brasil, por exemplo, sÃo regiÃes privilegiadas neste particular. Portanto, pode-se dizer que à ainda muito inibida, a iniciativa de desenvolver formas de exploraÃÃo desses potenciais, com o objetivo de desenvolver nÃctares. Este estudo teve como objetivo desenvolver um nÃctar misto a base de suco integral de caju e polpa de aÃaÃ. Foi realizado atravÃs de um planejamento experimental composto central 22, onde as variÃveis foram percentuais de polpa de aÃaà (20 a 80%), percentual de suco de caju integral (20 a 80%) e percentual de polpa total (30 a 60%). O teor de sÃlidos solÃveis totais foi fixado em 11ÂBrix. As onze formulaÃÃes foram submetidas a testes sensoriais de impressÃo global, aparÃncia, sabor e intenÃÃo de compra, realizadas com 70 provadores nÃo treinados. A melhor formulaÃÃo selecionada atravÃs das respostas dadas pelos provadores, com auxilio da ferramenta estatÃstica de anÃlise de superfÃcie de resposta, foi aquela com 30,0% do teor de polpa total, sendo, 54,2% de polpa de aÃaÃ, e 45,8% de suco de caju integral. O nÃctar elaborado foi envasado em embalagens de vidro e PET. O nÃctar final selecionado foi submetido Ãs anÃlises quÃmicas, fÃsico-quÃmicas, microbiolÃgicas e sensoriais. Os resultados para as anÃlises quÃmicas e fÃsico-quÃmicas nÃo apresentaram interaÃÃo significativa (p>0,05) entre embalagens e tempo de armazenamento exceto para os aÃÃcares totais que apresentaram interaÃÃo significativa (p≤0,05). Os resultados microbiolÃgicos foram satisfatÃrios para coliformes (35ÂC e 45ÂC) e salmonella sp. Para os resultados sensoriais, realizados com 100 provadores nÃo treinados, nÃo ocorreram alteraÃÃes significativas ao nÃvel de 5% de probabilidade, entre as embalagens (PET e vidro) e os tempos (zero e trinta dias), nos parÃmetros de aparÃncia, sabor, impressÃo global e intenÃÃo de compra.
The sector of beverages is increasing in recent years. In the majority of countries the statistical data show increasing consumption per capita and global. These values are more expressive when are related to beverage obtained from fruits, due to the fact that they constitute important source of vitamins and minerals for the human diet besides as possessing flavors. The northeast and north regions of Brazil occupy important place due large cultivation of the fruits particularly tropical and sub-tropical fruits. Therefore it can be said still there is very little initiative for exploration of this potential including the obtaining of nectars. This study had the purpose to develop mixed nectar based on cashew apple juice and acai pulp, through an experimental model of 22 where the variables were percentage of aÃaà pulp (20 to 80%) and percentage of cashew juice (20 to 80 %) and total pulp percentage (30 to 60%). The amount of total soluble solids contents was fixed at 11ÂBrix. The eleven formulations were submitted to sensorial analysis of global impression, appearance, flavor and buying intention, performed by 70 non trained panelists. The best formulation selected through the responses given by the panelists, with the help of statistical analysis of surface response methodology was that 30% of total pulp content, being 54.2% aÃaà pulp and 45.8% cashew apple juice. The nectars were packed in glass and PET bottles. The results of chemical and physicochemical analysis donât presented significant interaction (p > 0.05) between packaging and storage time, except for the total sugars that presented significant interaction (p < 0.05). The microbiological results were satisfactory for coliforms (35  C and 45  C) and Salmonella sp. There were no significant interaction (p > 0.05) between packaging (PET and glass) and storage time (zero and 30 days) to the sensory attributes of appearance, taste and overall impression and to intention to purchase.
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Pinheiro, Analia Maria. "Desenvolvimento de néctares mistos à base de caju (Anacardium occidentale L) e açaí (Euterpe oleracea Mart.)." reponame:Repositório Institucional da UFC, 2008. http://www.repositorio.ufc.br/handle/riufc/17223.

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PINHEIRO, Analia Maria. Desenvolvimento de néctares mistos à base de caju (Anacardium occidentale L) e açaí (Euterpe oleracea Mart.). 2008. 75 f. : Dissertação (mestrado) - Universidade Federal do Ceará, Centro de Ciências Agrárias, Departamento de Tecnologia de Alimentos, Fortaleza-CE, 2008
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The sector of beverages is increasing in recent years. In the majority of countries the statistical data show increasing consumption per capita and global. These values are more expressive when are related to beverage obtained from fruits, due to the fact that they constitute important source of vitamins and minerals for the human diet besides as possessing flavors. The northeast and north regions of Brazil occupy important place due large cultivation of the fruits particularly tropical and sub-tropical fruits. Therefore it can be said still there is very little initiative for exploration of this potential including the obtaining of nectars. This study had the purpose to develop mixed nectar based on cashew apple juice and acai pulp, through an experimental model of 22 where the variables were percentage of açaí pulp (20 to 80%) and percentage of cashew juice (20 to 80 %) and total pulp percentage (30 to 60%). The amount of total soluble solids contents was fixed at 11ºBrix. The eleven formulations were submitted to sensorial analysis of global impression, appearance, flavor and buying intention, performed by 70 non trained panelists. The best formulation selected through the responses given by the panelists, with the help of statistical analysis of surface response methodology was that 30% of total pulp content, being 54.2% açaí pulp and 45.8% cashew apple juice. The nectars were packed in glass and PET bottles. The results of chemical and physicochemical analysis don’t presented significant interaction (p > 0.05) between packaging and storage time, except for the total sugars that presented significant interaction (p < 0.05). The microbiological results were satisfactory for coliforms (35 ° C and 45 ° C) and Salmonella sp. There were no significant interaction (p > 0.05) between packaging (PET and glass) and storage time (zero and 30 days) to the sensory attributes of appearance, taste and overall impression and to intention to purchase.
O setor que vem crescendo nos últimos anos é o de bebidas. Em todos os países os levantamentos estatísticos revelam números crescentes de consumo, tanto per capita quanto global. Esses valores são mais expressivos quando se refere a bebidas obtidas de frutas, pelo fato das mesmas se constituírem fontes importantes de vitaminas e minerais para a dieta humana, além de seus atrativos sabores. O Norte e Nordeste do Brasil, por exemplo, são regiões privilegiadas neste particular. Portanto, pode-se dizer que é ainda muito inibida, a iniciativa de desenvolver formas de exploração desses potenciais, com o objetivo de desenvolver néctares. Este estudo teve como objetivo desenvolver um néctar misto a base de suco integral de caju e polpa de açaí. Foi realizado através de um planejamento experimental composto central 22, onde as variáveis foram percentuais de polpa de açaí (20 a 80%), percentual de suco de caju integral (20 a 80%) e percentual de polpa total (30 a 60%). O teor de sólidos solúveis totais foi fixado em 11ºBrix. As onze formulações foram submetidas a testes sensoriais de impressão global, aparência, sabor e intenção de compra, realizadas com 70 provadores não treinados. A melhor formulação selecionada através das respostas dadas pelos provadores, com auxilio da ferramenta estatística de análise de superfície de resposta, foi aquela com 30,0% do teor de polpa total, sendo, 54,2% de polpa de açaí, e 45,8% de suco de caju integral. O néctar elaborado foi envasado em embalagens de vidro e PET. O néctar final selecionado foi submetido às análises químicas, físico-químicas, microbiológicas e sensoriais. Os resultados para as análises químicas e físico-químicas não apresentaram interação significativa (p>0,05) entre embalagens e tempo de armazenamento exceto para os açúcares totais que apresentaram interação significativa (p≤0,05). Os resultados microbiológicos foram satisfatórios para coliformes (35ºC e 45ºC) e salmonella sp. Para os resultados sensoriais, realizados com 100 provadores não treinados, não ocorreram alterações significativas ao nível de 5% de probabilidade, entre as embalagens (PET e vidro) e os tempos (zero e trinta dias), nos parâmetros de aparência, sabor, impressão global e intenção de compra.
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Abbar, Bouamama. "Influence de la physico-chimie des eaux de ruissellement sur la vulnérabilité des ouvrages de rétention." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMLH04/document.

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Dans ce travail de thèse on a examiné expérimentalement l’efficacité épuratoire d’un dispositif de filtration, constitué de sable concassé et de nappes de géotextile en fibre de lin, à l’échelle de laboratoire afin d’installer en conditions locales (Agglomération Havraise) un site expérimental en vraie grandeur. Deux types d’essais ont été utilisés : (1) Des essais batch pour quantifier le potentiel de sorption des ions plomb, cuivre et zinc par les étoupes de fibres de lin à partir d'une solution aqueuse. (2) Des essais de filtration de longue durée dans des colonnes en laboratoire remplie de sable concassé avec et sans strates de géotextile en fibres de lin pour étudier l'influence de la présence de géotextiles sur le transfert et la rétention (i) des particules en suspension non polluées (particules de kaolinite) (ii) des métaux lourds solubles dans l'eau (iii) des métaux lourds sous forme particulaire (ions métalliques adsorbés sur les particules de kaolinite en suspension) et métaux lourds et solubles dans l'eau. Les essais de sorption ont montré que l'adsorption des ions métalliques par les fibres de lin est favorable avec une capacité d'adsorption maximale de 9,9 ; 10,7 et 8,4 mg g-1 respectivement pour le cuivre, le plomb et le zinc. Les essais de filtration ont montré que la présence des géotextiles dans le sable influence le transfert des métaux lourds, sous les deux formes soluble et particulaire. La rétention des métaux dans le sable est favorisée et les profils de rétention sont modifiés. De plus, et contrairement aux géotextiles synthétiques, les géotextiles en fibres de lin contribuent eux-mêmes à la rétention d’une fraction non négligeable de polluants métalliques sous forme soluble et particulaire dans leur propre structure. L’efficacité globale de rétention des métaux par le dispositif de filtration est améliorée. Ces résultats sont de bons indicateurs pour envisager l'utilisation de matériaux à base de fibre de lin dans la conception de systèmes de traitement local des eaux de ruissellement et l'élimination de polluants métalliques
In this thesis work, the purification efficiency of a filtration device, consisting of crushed sand and flax fiber geotextile layers, was investigated experimentally at the laboratory scale in order to install in local conditions (Havre agglomeration) an experimental site in full size. Two types of tests were used: (1) Batch tests to quantify the sorption potential of lead, copper and zinc ions by flax fiber tows from an aqueous solution , (2) Long-term filtration tests in laboratory columns filled with crushed sand with and without flax fiber geotextile layers to study the influence of the presence of geotextiles on the transfer and retention of (i) particles in unpolluted suspension (kaolinite particles) (ii) water-soluble heavy metals (iii) heavy metals in particulate form (metal ions adsorbed on suspended kaolinite particles) and heavy and water-soluble metals. Sorption tests have shown that the adsorption of metal ions by flax fibers is favorable with a maximum adsorption capacity of 9.9; 10.7 and 8.4 mg g-1 respectively for copper, lead and zinc. Filtration tests have shown that the presence of geotextiles in sand influences the transfer of heavy metals, in both soluble and particulate forms. The retention of metals in the sand is favored and the retention profiles are modified. In addition, and unlike synthetic geotextiles, flax fiber geotextiles themselves contribute to the retention of a significant fraction of metal pollutants in soluble and particulate form in their own structure. The overall metal retention efficiency of the filtration device is improved. These results are good indicators for considering the use of flax fiber materials in the design of local stormwater treatment systems and the removal of metal pollutants
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De, Zorzi Chiara <1976&gt. "Physico-chemical Characterization of Glass Surfaces: New Surface-related Analytical Approaches." Master's Degree Thesis, Università Ca' Foscari Venezia, 2021. http://hdl.handle.net/10579/20493.

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Since ancient times glass was used as storage material for ointments, medicinal remedies and cosmetics for its properties of inertness and product protection. Along the centuries the technology has developed dedicated glasses for pharmaceutical use, improving their mechanical and chemical performances up to the modern borosilicate glasses. Meanwhile the technology is trying to meet the needs of new complex and sensitive drugs, the necessity of new analytical approaches has increased for a better overview of the content-material interactions to complement the classical pharmacopoeia analysis. From this perspective a physico-chemical analytical approach, focused on the glass surface as main player of the drug-content interactions, is the main topic of this study. The application of surface dedicated complementary techniques as XPS, SIMS and SEM was investigated, permitting the characterization of the glass surface in terms of morphology, composition and depth elemental overview. As preliminary part of a more complex project, this study focused on the comparison and baseline characterization of the raw materials with the related finished containers, highlighting interesting surface features and glass composition-related peculiarities. This work confirms the suitability of these analytical techniques to pave the way for further studies on long term storage or environmental effects, helping to define a possible correlation with drug interactions phenomena.
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Ștefan, Gheorghiu. "Standard and nonstandard roughness - consequences for the physics of self-affine surfaces /." free to MU campus, to others for purchase, 2000. http://wwwlib.umi.com/cr/mo/fullcit?p9988664.

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Leuty, Gary M. "Adsorption and Surface Structure Characteristics Toward Polymeric Bottle-Brush Surfaces via Multiscale Simulation." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1397577080.

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Shukla, Nisha. "Surface spectroscopic studies of coadsorbed molecules and surface reactions at single crystal metal surfaces." Thesis, Cardiff University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275212.

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Books on the topic "Surface physic"

1

Hasselbrink, E., and B. I. Lundqvist. Dynamics. Amsterdam, Netherlands: North Holland, 2008.

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Physics at surfaces. Cambridge [Cambridgeshire]: Cambridge University Press, 1988.

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A, Hoareau, ed. Physics of surfaces. Gif-sur-Yvette: Editions Frontieres, 1996.

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Introduction to surface physics. Oxford: Clarendon Press, 1994.

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Introduction to surface physics. Oxford: Oxf. U. P., 1994.

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The chemical physics of surfaces. 2nd ed. New York: Plenum Press, 1990.

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Maria, Stęślicka, ed. Basic theory of surface states. Oxford: Clarendon Press, 1992.

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Davison, Sydney G. Basic theory of surface states. New York: Clarendon Press, 1996.

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Schommers, Wolfram. Structure and Dynamics of Surfaces I. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986.

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1954-, Nalwa Hari Singh, ed. Advances in surface science. San Diego: Academic Press, 2001.

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Book chapters on the topic "Surface physic"

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Raether, Heinz. "Surface plasmons on smooth surfaces." In Springer Tracts in Modern Physics, 4–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/bfb0048319.

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Jensen, Erik. "Surface Physics." In Springer Handbook of Atomic, Molecular, and Optical Physics, 1343–54. New York, NY: Springer New York, 2006. http://dx.doi.org/10.1007/978-0-387-26308-3_89.

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Jensen, Erik T. "Surface Physics." In Springer Handbook of Atomic, Molecular, and Optical Physics, 1349–58. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-73893-8_90.

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Rocca, M. "9.6 Magnetic surfaces and surface magnon dispersion." In Physics of Solid Surfaces, 515. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-47736-6_149.

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Oura, K., M. Katayama, A. V. Zotov, V. G. Lifshits, and A. A. Saranin. "Elementary Processes at Surfaces II. Surface Diffusion." In Advanced Texts in Physics, 325–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-05179-5_13.

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Oura, K., M. Katayama, A. V. Zotov, V. G. Lifshits, and A. A. Saranin. "Surface Analysis III. Probing Surfaces with Ions." In Advanced Texts in Physics, 109–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-05179-5_6.

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Raether, Heinz. "Surface plasmons on surfaces of small roughness." In Springer Tracts in Modern Physics, 40–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/bfb0048320.

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Ludwig, Matthias, Günter Heymanna, and Peter Janietz. "Ruthenium-induced surface states on n-GaAs surfaces." In Perspectives in Condensed Matter Physics, 191–98. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0657-0_26.

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Manara, G., S. Mugnaini, P. Nepa, and A. A. Serra. "Surface Wave Excitation at Edges in Anisotropic Impedance Surfaces." In Springer Proceedings in Physics, 25–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-07221-9_3.

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Nowicki, M., and K. Wandelt. "Copper surfaces in sulfuric acid: sulfate-induced surface morphology." In Physics of Solid Surfaces, 882–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53908-8_196.

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Conference papers on the topic "Surface physic"

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Aoyagi, Mitsuhiro, Akihiro Uchibori, Takahi Takata, David L. Y. Louie, and Andrew J. Clark. "Sodium Fire Analysis Using a Sodium Chemistry Package in MELCOR." In 2020 International Conference on Nuclear Engineering collocated with the ASME 2020 Power Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/icone2020-16751.

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Abstract The Sodium Chemistry (NAC) package in MELCOR has been developed to enhance application to sodium cooled fast reactors. The models in the NAC package have been assessed through benchmark analyses. The F7-1 pool fire experimental analysis is conducted within the framework of the U.S.–Japan collaboration; Civil Nuclear Energy Research and Development Working Group. This study assesses the capability of the pool fire model in MELCOR and provides recommendations for future model improvements because the physics of sodium pool fire are complex. Based on the preliminary results, analytical conditions, such as heat transfer on the floor catch pan are modified. The current MELCOR analysis yields lower values than the experimental data in pool combustion rate and pool, catch pan, and gas temperature during early time. The current treatment of heat transfer for the catch pan is the primary cause of the difference in the results from the experimental data. After sodium discharge stopping, the pool combustion rate and temperature become higher than experimental data. This is caused by absence of a model for pool fire suppression due to the oxide layer buildup on the pool surface. Based on these results, recommendations for future works are needed, such as heat transfer modification in terms of the catch pan and consideration of the effects of the oxide layer for both the MELCOR input model and pool physic.
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Jaya, Jaka Darma, Agung Nugroho, Muthia Elma, and Sunardi Sunardi. "Review on biodegradable pot: A new promising approach for sustainable agriculture." In THE PHYSICS OF SURFACES: Aspects of the Kinetics and Dynamics of Surface Reaction. AIP, 2023. http://dx.doi.org/10.1063/5.0118270.

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Supriadi, S., F. Robiansyah, D. Wardana, A. Rahmanita, and R. T. A. Fatin. "Sundanese ethnomathematics in fractional number learning with engklek games in pre service students: Didactical design findings." In THE PHYSICS OF SURFACES: Aspects of the Kinetics and Dynamics of Surface Reaction. AIP, 2023. http://dx.doi.org/10.1063/5.0122420.

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Ahmad, N. A., K. Kidam, and R. Mohsin. "Community-based emergency response for toxic gas release: Conceptual framework." In THE PHYSICS OF SURFACES: Aspects of the Kinetics and Dynamics of Surface Reaction. AIP, 2023. http://dx.doi.org/10.1063/5.0114240.

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Bayu, Eka Pasca Surya, Ahmad Fauzan, and Armiati. "Hypothetical learning trajectory for statistical material package A level 2 based on realistic mathematic education." In THE PHYSICS OF SURFACES: Aspects of the Kinetics and Dynamics of Surface Reaction. AIP, 2023. http://dx.doi.org/10.1063/5.0122395.

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Bahirrah, Siti, Widya Lestari, Amir Zulhakim, Asrul Suwandi, and Nining Irfanita. "External root resorption (EARR) and interleukin-1β (rs1143634) gene polymorphism in the Bataknese population: A pilot study." In THE PHYSICS OF SURFACES: Aspects of the Kinetics and Dynamics of Surface Reaction. AIP, 2023. http://dx.doi.org/10.1063/5.0115002.

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Supriyanto, Edy, Anis Istiqomah, Ro'sil Qohhar, Endhah Purwandari, Henry Ayu Kartikasari, Agus Subekti, and Agus Geter Edy Sutjipto. "Simulation of the iodide/triiodide electrolyte concentration’s effects on Jsc and Voc for dye-sensitized solar cells (DSSC)." In THE PHYSICS OF SURFACES: Aspects of the Kinetics and Dynamics of Surface Reaction. AIP, 2023. http://dx.doi.org/10.1063/5.0117686.

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Hidayat, R., E. Musdi, Yerizon, and E. Z. Jamaan. "E-module development using 3D PageFlip Professional media to improve mathematics problem solving skills of students in SMP Negeri 1 Padang Panjang." In THE PHYSICS OF SURFACES: Aspects of the Kinetics and Dynamics of Surface Reaction. AIP, 2023. http://dx.doi.org/10.1063/5.0122470.

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Ahmad, Defri, Suherman, and Yarman. "Analysis students’ responses on transformational geometry problems to identify student spatial and logical-mathematical ability." In THE PHYSICS OF SURFACES: Aspects of the Kinetics and Dynamics of Surface Reaction. AIP, 2023. http://dx.doi.org/10.1063/5.0122331.

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Ahmad, Eryta Gusma, I. Made Arnawa, Ali Asmar, Edwin Musdi, and Ronal Rifandi. "Developing instructional design of statistics material based on realistic mathematics education (RME) to improve mathematical communication ability and learning independence for junior high school grade VIII students." In THE PHYSICS OF SURFACES: Aspects of the Kinetics and Dynamics of Surface Reaction. AIP, 2023. http://dx.doi.org/10.1063/5.0122408.

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Reports on the topic "Surface physic"

1

Steyerl, A. Surface physics with cold and thermal neutron reflectometry. Office of Scientific and Technical Information (OSTI), November 1991. http://dx.doi.org/10.2172/7155985.

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Millis, Andrew. Surface and Interface Physics of Correlated Electron Materials. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/1399869.

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Michalske, T. A., D. R. Jennison, P. J. Feibelman, J. E. Houston, and G. L. Kellogg. Physico-chemical stability of solid surfaces: Final report. Office of Scientific and Technical Information (OSTI), June 1998. http://dx.doi.org/10.2172/654202.

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Cangi, Attila. An Exchange-Correlation Functional Capturing Bulk Surface and Confinement Physics. Office of Scientific and Technical Information (OSTI), July 2018. http://dx.doi.org/10.2172/1530147.

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Fader, G. B. J. Surficial geology and physical properties 4: surface features. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/210695.

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Nyamekye, Charles. Direction Raman spectroscopy: a surface-sensitive tool for measuring the chemical, optical, and physical properties of adsorbates on metal surfaces. Office of Scientific and Technical Information (OSTI), May 2020. http://dx.doi.org/10.2172/1711429.

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Cangi, Attila, Francisca Sagredo, Elizabeth Decolvenaere, and Ann E. Mattsson. Semi-local Density Functional Approximations for Bulk Surface and Confinement Physics. Office of Scientific and Technical Information (OSTI), September 2019. http://dx.doi.org/10.2172/1569522.

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Geza, Mangistu, T. Tesfa, Liangping Li, and M. Qiao. Toward Hybrid Physics -Machine Learning to improve Land Surface Model predictions. Office of Scientific and Technical Information (OSTI), April 2021. http://dx.doi.org/10.2172/1769785.

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Mele, E. J. Condensed matter physics at surfaces and interfaces of solids. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/5524488.

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Luttrell, G. H., R. H. Yoon, and J. B. Zachwieja. Control of pyrite surface chemistry in physical coal cleaning. Office of Scientific and Technical Information (OSTI), June 1992. http://dx.doi.org/10.2172/5060937.

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