Relevant bibliographies by topics / Total pore volume

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Total pore volume'

Author: Grafiati
Published: 28 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Total pore volume"

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De-Deus, Gustavo, Miriam Z. Scelza, Prasanna Neelakantan, Subash Sharma, Aline de Almeida Neves, and Emmanuel João Nogueira Leal Silva. "Three-dimensional Quantitative Porosity Characterization of Syringe- versus Hand-mixed Set Epoxy Resin Root Canal Sealer." Brazilian Dental Journal 26, no. 6 (2015): 607–11. http://dx.doi.org/10.1590/0103-6440201300074.

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The aim of the present study was to compare the porosity characteristics of AH Plus Jet(tm) syringe-mix and the conventional hand-mixed AH Plus root canal sealers by three-dimensional quantitative high-resolution micro-computed tomography (micro-CT). Seven test specimens were prepared from each tested sealer by a single operator following the manufacturer's instructions and poured into pre-lubricated plastic split-ring moulds. Set sealer test specimens were scanned using a micro-CT device and the shadow images were reconstructed into cross-sectional slices. The evaluated parameters were (i) to
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Gao, Hongmei, Yongwei Lan, and Nan Guo. "Pore Structural Features of Granite under Different Temperatures." Materials 14, no. 21 (2021): 6470. http://dx.doi.org/10.3390/ma14216470.

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To explore the effects of thermal actions on the pore structural features of granite, scanning electron microscope (SEM) and mercury injection experiments were carried out on granite after thermal treatment (25 °C to 400 °C). The pore structure was investigated from various perspectives, including the capillary pressure curve, the pore–throat ratio, the median saturation pressure, the median pore–throat radius, the porosity, the pore volume, and the pore size distribution. Based on mercury intrusion test data, the Winland model of permeability prediction was modified for a high-temperature tig
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Zhou, Dan, Zhiqiang Lv, Yunxing Cao, et al. "Fractal Evolution Characteristics of Pore Structure in Coal-Acidified Stimulation." Fractal and Fractional 9, no. 2 (2025): 62. https://doi.org/10.3390/fractalfract9020062.

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The pore structure and connectivity of coal are the primary factors influencing the permeability of coal reservoirs. However, clay and carbonate minerals are commonly found filling the pores and fractures within coal. To address the impact of these minerals on fracturing effectiveness, acidic fracturing technology has been introduced. This technique has proven to be an effective measure for enhancing the extraction rate of low-permeability coal seams with high mineral content. In this study, coal samples were treated with a 3% HCl solution, and the changes in the pore structure of the coal bef
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Ding, Chenlong, Jinxian He, Hongchen Wu, and Xiaoli Zhang. "Nanometer Pore Structure Characterization of Taiyuan Formation Shale in the Lin-Xing Area Based on Nitrogen Adsorption Experiments." Minerals 11, no. 3 (2021): 298. http://dx.doi.org/10.3390/min11030298.

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Ordos Basin is an important continental shale gas exploration site in China. The micropore structure of the shale reservoir is of great importance for shale gas evaluation. The Taiyuan Formation of the lower Permian is the main exploration interval for this area. To examine the nanometer pore structures in the Taiyuan Formation shale reservoirs in the Lin-Xing area, Northern Shaanxi, the microscopic pore structure characteristics were analyzed via nitrogen adsorption experiments. The pore structure parameters, such as specific surface area, pore volume, and aperture distribution, of shale were
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Im, Ji Sun, Soo Jin Park, and Young Seak Lee. "Preparation and Characterization of Electrospun Carbon Nanofibers with Na2CO3/H3PO4 Activation." Solid State Phenomena 135 (February 2008): 81–84. http://dx.doi.org/10.4028/www.scientific.net/ssp.135.81.

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In this work, carbon nanofibers(CNFs) were prepared by using electrospinning method. Phosphoric acid and sodium carbonate activation of CNFs were conducted to increase surface area and pore volume. Pore structures of activated CNFs were developed with increasing surface area and pore volume through activation. Specific surface area increased about 60 times and total pore volume developed around 120 times. Activated CNFs have different pore distribution with different chemical agent.
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Han, Mei, Chao Han, Zuozhen Han, et al. "Mineral compositional controls on the porosity of black shales from the Wufeng and Longmaxi Formations (Southern Sichuan Basin and its surroundings) and insights into shale diagenesis." Energy Exploration & Exploitation 36, no. 4 (2018): 665–85. http://dx.doi.org/10.1177/0144598718763890.

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The effects of brittle minerals in shale diagenesis on shale pores remain controversial and it is difficult to quantify directly. However, the relationship between brittle minerals and shale pores could provide indirect guidance regarding diagenesis processes in post-mature marine shales. In this study, the pore size distribution was determined, and the relationship between pore volume and shale composition was examined in shale samples with different total organic carbon contents from the Wufeng and Longmaxi Formations, with the objective of distinguishing pore size ranges in organic matter a
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Liang, Feng, Qin Zhang, Bin Lu, et al. "Pore Structure in Shale Tested by Low Pressure N2 Adsorption Experiments: Mechanism, Geological Control and Application." Energies 15, no. 13 (2022): 4875. http://dx.doi.org/10.3390/en15134875.

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The N2 adsorption experiment is one of the most important methods for characterizing the pore structure of shale, as it covers the major pore size range present in such sediments. The goal of this work is to better understand both the mechanisms and application of low-pressure nitrogen adsorption experiments in pore structure characterization. To achieve this, the N2 adsorption molecular simulation method, low-pressure N2 adsorption experiments, total organic carbon (TOC) analysis, X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and a total of 196 shale samples from the W
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Tang, Qiong, Heqin Li, Min Zuo, et al. "Optimized Assembly of Micro-/Meso-/Macroporous Carbon for Li–S Batteries." Nano 12, no. 02 (2017): 1750021. http://dx.doi.org/10.1142/s1793292017500217.

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In order to explore the effect of hierarchical porous carbon on the performances of Li–S batteries, we synthesized three kinds of micro-/meso-/macroporous carbon materials with different pore properties by facile hard-template method. Different from the majority of reports on porous carbon ensuing large specific surface area (SSA) and total pore volume, it was found that in the case of identically high sulfur content, the pore size distribution substantially influences the performances of Li–S batteries rather than the SSA and total pore volume. Furthermore, in the assembly of micro-/meso-/mac
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Zhang, Sheng, Xi Ling Zhou, Ke Ren Zheng, You Jun Xie, and Qiang Fu. "Characterization of Pore Structure of Hardened Cement-Asphalt Paste by Mercury Intrusion Porosimetry." Advanced Materials Research 1004-1005 (August 2014): 1589–93. http://dx.doi.org/10.4028/www.scientific.net/amr.1004-1005.1589.

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To know the pore structure of cement-asphalt pastes, mercury intrusion porosimetry was applied to measure the total porosity, pore distribution and accumulative volume distribution of pore size and the pore structures were analyzed. The results show that the total porosities decline with increase in ages and reduction in A/C ratio. The total porosities declines from 28% at 1d, to 15.8%~17.2% at 28d; the most probable pore size declines from 20nm at 1d to 5nm at 28d.At 28d, there is an increase in the magnitude of pore size between100nm and 5μm; the volume faction of smaller than 5μm is 40~50%;
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Li, Zhuo, Zhenxue Jiang, Hailong Yu, and Zhikai Liang. "Organic Matter Pore Characterization of the Wufeng-Longmaxi Shales from the Fuling Gas Field, Sichuan Basin: Evidence from Organic Matter Isolation and Low-Pressure CO2 and N2 Adsorption." Energies 12, no. 7 (2019): 1207. http://dx.doi.org/10.3390/en12071207.

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Organic matter (OM) pores are significant for shale gas accumulation and flow mechanisms. The pores of Wufeng-Longmaxi (W-L) shale in the Sichuan Basin, China have been extensively characterized, however, the proportion of OM pores in this shale have not been adequately discussed. In this study, the contribution of OM pores to the total pore volume of W-L shale was quantitatively studied through the analysis of OM isolation, field emission scanning electron microscopy (FE-SEM) and low-pressure CO2 and N2 adsorption (LPGA). FE-SEM images showed abundant OM pores, interparticle pores and intrapa
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Dissertations / Theses on the topic "Total pore volume"

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Karakas, Z. K., R. Boncukcuoglu, and I. H. Karakas. "The Effects of Fuel Type Above Adsorbtive Properties of the Nickel Ferrite Nanoparticles synthesized with Microwave Method." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35271.

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In this study, we were able to develop a new and practical method for the synthesis of the NiFe2O4 nanoparticles. The synthesis of nickel ferrite nanoparticles was used various fuel substances such as glycine, urea and citric acid. The synthesis mixture prepared in stoichiometric rates was put in to the kitchen type microwave oven. In the end of reaction time was obtained a brown-black solid. The obtained solid was characterized with X-Ray Powder Diffraction and Scanning Electron Microscopy. The results of this analysis showed that all of the obtained particles has got nano-size particle size
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Oschatz, M., W. Nickel, M. Thommes, et al. "Evolution of porosity in carbide-derived carbon aerogels." Royal Society of Chemistry, 2014. https://tud.qucosa.de/id/qucosa%3A36239.

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Carbide-derived carbon (CDC) aerogel monoliths with very high porosity are synthesized starting from polymeric precursors. Cross-linking by platinum-catalyzed hydrosilylation of polycarbosilanes followed by supercritical drying yields preceramic aerogels. After ceramic conversion and silicon extraction in hot chlorine gas, hierarchically porous carbon materials with specific surface areas as high as 2122 m² g⁻¹ and outstanding total pore volumes close to 9 cm³ g⁻¹ are obtained. Their pore structure is controllable by the applied synthesis temperature as shown by combined nitrogen (-196 °C) and
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Books on the topic "Total pore volume"

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Conceição, Júnia Cristina Peres Rodrigues da. Texto para Discussão 3079. Instituto de Pesquisa Econômica Aplicada (Ipea), 2025. https://doi.org/10.38116/td3079-port.

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Este trabalho apresenta uma análise do desempenho das linhas de crédito, presentes no Plano Setorial para Adaptação à Mudança do Clima e Baixa Emissão de Carbono na Agropecuária com vistas ao Desenvolvimento Sustentável (Plano ABC+) para a agricultura familiar, verificando como está sendo essa inserção da agricultura familiar nesse plano; especificamente, como estão operando as linhas de crédito, contidas no plano, destinadas aos agricultores familiares. Para tanto, foi feita uma revisão de literatura sobre o assunto, e, a partir dos dados do Manual de Crédito Rural – MCR (BCB, [s.d.]), foi ve
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Ferruzzi, Fernanda, Kátia Coutinho Rosa, Kátia Trindade, Henrique Müller de Quevedo, Ernesto Byron Benalcázar Jalkh, and Alberto Ataíde Saldanha. Manual Clínico de Prótese Total. Editora Uningá, 2022. http://dx.doi.org/10.46311/978-65-80328-04-8.

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A prótese total é um dispositivo que tem por objetivo substituir os dentes perdidos e recuperar o volume alveolar em uma arcada totalmente edêntula. Para tanto, são necessários diversos procedimentos clínicos para a confecção da prótese total. O objetivo deste trabalho é apresentar um manual de confecção de prótese total para a Clínica Integrada Restauradora da Uningá. Este manual foi desenvolvido com o intuito de ser um instrumento de apoio e de prévia consulta aos atendimentos clínicos a serem executados por alunos de graduação, pois trata-se de um material didático de fácil leitura, mostran
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Soares, Carmen, Anny Jackeline Torres Silveira, and Bruno Laurioux. Mesa dos Sentidos e Sentidos da Mesa: Vol. I. Imprensa da Universidade de Coimbra, 2021. http://dx.doi.org/10.14195/978-989-26-2061-9.

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A presente obra está organizada em dois volumes, contendo seis partes e um total de 37 capítulos.Os 16 capítulos que compõem o volume I estruturam-se em torno de três temáticas centrais. A perceção sensorial de alimentos e ambientes é tratada na Parte I (Sentidos à Mesa). A relação harmónica ou conflituosa entre alimentação e saúde discute-se na Parte II (Mesas terapêuticas, mesas saudáveis e mesas malsãs). Os condicionalismos de ordem gustativa, biológica ou económica por detrás daalimentação servem de pilar aos estudos da Parte III (Mesas de delícias, mesas de sobrevivência e mesas económica
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Polonsky, Antony. Polin: Studies in Polish Jewry Volume 14. Liverpool University Press, 2001. http://dx.doi.org/10.3828/liverpool/9781874774693.001.0001.

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The Polish–Lithuanian Commonwealth, created in 1569, covered a wide spectrum of faiths and languages. The nobility, who were the main focus of Polishness, were predominantly Catholic; the peasantry included Catholics, Protestants, and members of the Orthodox faith, while nearly half the urban population, and some 10 per cent of the total population, was Jewish. The partition of Poland at the end of the eighteenth century and the subsequent struggle to regain Polish independence raised the question of what the boundaries of a future state should be, and who qualified as a Pole. The partitioning
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Siffert, Nelson, and Katia Rocha. Texto para Discussão 3082. Instituto de Pesquisa Econômica Aplicada (Ipea), 2025. https://doi.org/10.38116/td3082-port.

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O objetivo deste trabalho é avaliar, à luz da experiência internacional, qual cenário, em termos de volume de produção de hidrogênio de baixo carbono (LHC), o Brasil poderá alcançar em 2030. Agentes públicos e privados balizam suas expectativas, reduzem as incertezas e direcionam suas ações, tomando como referência marcos de médio e longo prazos, que expressam expectativas de crescimento do mercado. São apresentadas políticas públicas de suporte ao surgimento e à expansão do mercado do hidrogênio de baixo carbono, tendo como referência estudos da Agência Internacional de Energia (International
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Peña, Aris Verdecia. Tópicos nas Ciências da Saúde Volume III. Pantanal Editora, 2020. http://dx.doi.org/10.46420/9786588319253.

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A Editora Pantanal em seu 3º Volume do E-book “Tópicos nas ciências da saúde”, com seis capítulos traz novos temas no atuar da medicina. A obra, vem a materializar o anseio da Editora Pantanal na divulgação de resultados, que contribuem de modo direto no desenvolvimento e saúde humana. No primeiro capitulo o trabalho nos apresenta uma patologia que, embora muitos pensem que não é comum, tem grande impacto em nossa população mundial. A frequência desta patologia na década de 80 - 90 foi de 2 - 4 x 10.000 habitantes, porém com estudos atuais e levando em consideração não apenas o transtorno auti
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Reyes Gallardo, René Alberto, Rodrigo Oscar Sagardía Parga, and Alejandra Schueftan. Bosques energía sociedad nº8. Consumo de combustibles derivados de la madera y transición energética en la región del Maule. INFOR, 2018. http://dx.doi.org/10.52904/20.500.12220/27298.

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La región del Maule es una de las zonas del país que cuenta con menos información sobre el consumo de combustibles derivados de la madera. En 2015, el consumo regional de leña se estimó en 469.734 m³ sólidos, lo que difiere enormemente de estimaciones previas. Este estudio pretende despejar esas diferencias, a partir de muestreos y censos realizados en distintos sectores económicos de la región. De acuerdo a estos resultados, en 2016 la región consumió 1.144.973 m³ sólidos de leña, 430.641 m³ sólidos de desechos forestales y 8.649 toneladas de carbón vegetal (76.781 m³ sólidos de madera emplea
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Book chapters on the topic "Total pore volume"

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Ji, Changwei, Jianpu Shen, and Shuofeng Wang. "Numerical Investigation of Combustion Characteristics of the Port Fuel Injection Hydrogen-Oxygen Internal Combustion Engine Under the Low-Temperature Intake Condition." In Proceedings of the 10th Hydrogen Technology Convention, Volume 1. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8631-6_3.

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AbstractThe flammability limits of the hydrogen-oxygen mixture are extremely wide, and the ignition energy is low. Due to its excellent combustion properties, the hydrogen-oxygen mixture can be used as fuel in internal combustion engines (ICEs). However, the combustion of hydrogen-oxygen mixture is too intense, which results in limited research on its application in ICEs and is limited to low-temperature conditions in aerospace. This research aims to numerically discuss the coupling effects of equivalence ratio and ignition timing on the port fuel injection hydrogen-oxygen ICE under the low-te
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Li, Changying, Shuqi Meng, Tianming Ruan, and Yalun Yan. "Research of Corrosion Products Migration Behavior in PWR Primary Circuit Under Extended Low Power Operation Mode." In Springer Proceedings in Physics. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_5.

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AbstractIn order to improve the flexibility of response to power grid demand, both newly built and in-service nuclear power units need to demonstrate the feasibility of ELPO (Extended Low Power Operation) and design schemes. During ELPO, the change of local thermal hydraulic conditions caused by the change of core power will have a great impact on the migration behavior of corrosion products in the primary circuit of PWR (Pressurized Water Reactor). Corrosion products deposited in the core will affect the heat transfer of fuel cladding, axial power distribution and critical heat flux. Corrosio
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Doveton, John H. "Pore-System Facies: Pore Throats and Pore Bodies." In Principles of Mathematical Petrophysics. Oxford University Press, 2014. http://dx.doi.org/10.1093/oso/9780199978045.003.0011.

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When Archie (1950) first introduced the term “petrophysics,” he outlined a tentative petrophysical system “. . . which revolves mainly around pore-size distribution which defines the capillary pressure curve, permeability, and porosity.” As such, a pore distribution does not necessarily coincide with a specific rock type. Different lithologies might contain similar pore distributions and a single lithology might be characterized by several distinctive pore distributions. In the latter case, these differences could be used as the basis for a lithofacies subdivision, where the criteria were defi
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White, Robert E. "Where the Vine Roots Live." In Understanding Vineyard Soils. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780199342068.003.0007.

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Chapter 3 gives examples of how grapevines, being woody perennials, have the potential to develop extensive, deep root systems when soil conditions are favorable. One of the most important factors governing root growth is a soil’s structure, the essential attributes of which are • Spaces (collectively called the pore space or porosity) through which roots grow, gases diffuse, and water flows • Storage of water and natural drainage following rain or irrigation • Stable aggregation • Strength that not only enables moist soil to bear the weight of machinery and resist compaction but also influenc
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Alfaro Soto Miguel and Chang Hung Kiang. "Behavior of LNAPL in soils with multimodal pore-size distribution." In From Fundamentals to Applications in Geotechnics. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-603-3-2284.

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New models are presented to characterize the behavior of light non-aqueous phase liquids (LNAPL) and determine their specific volume in soils with a multimodal distribution of pores making an adaptation of the information contained in the API4760 publication entitled “LNAPL Distribution and Recovery Model (LDRM)”. The estimation of LNAPL requires information about the distribution of the non-mixable fluids under vertical equilibrium conditions, which include the effects of capillary forces in a system made up of subsystems with different distributions of pores, as well as t
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Bowker, Michael. "Measurement of catalytic properties." In The Basis and Applications of Heterogenuous Catalysis. Oxford University Press, 1998. http://dx.doi.org/10.1093/hesc/9780198559580.003.0006.

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This chapter assesses the measurement of catalytic properties. The most accurate measure of the productivity of a catalyst is an industrial plant. However, industrial plants are inflexible, work in a very narrow window of temperature, pressure, and flow rate, and the catalyst cannot be readily changed. For these reasons, scaled down versions of reactors are used for catalyst testing, and the smallest of these is usually referred to as a microreactor. There are wide range of industrial reactors for heterogeneous reactions, including fixed bed reactors, multitubular reactors, fluidised bed react
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Zheng, Wenxuan, and Ying Yang. "Preparation of Cotton Straw-Based Activated Carbon by Microwave Charring and Its Adsorption Characteristics on Ni2+." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220320.

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In this study, cotton stalks from Xinjiang Alar were used as raw materials. Preparation of modified cotton straw-based activated carbon by microwave-assisted pyrolysis using H3PO4 as activator. The effects of different impregnation ratios, microwave power and irradiation time on the yield of cotton straw carbon and its adsorption performance on Ni2+ in the simulated wastewater were investigated by using Lagergren’s quasi primary and secondary adsorption kinetic equations. The experimental results showed that the adsorption performance of the modified cotton straw-based activated carbon was bes
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MASUTTI, LEONARDO, STEVENSON HALL, and JÁDISON DE OLIVEIRA. "PEREGRINO ROCK TYPES: AN ALTERNATIVE FOR PETROPHYSICAL PARAMETERS DISTRIBUTION." In Resumos do I Encontro Brasileiro de Petrofísica de Campos Maduros. Editora Realize, 2022. http://dx.doi.org/10.46943/i.ebpcm.2022.01.011.

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THE CREATION OF ROCK TYPES IS A PROCESS THAT MAKES IT POSSIBLE TO RELATE GEOLOGICAL FACIES AND PETROPHYSICAL PROPERTIES IN OIL RESERVOIRS. ROCK TYPES MUST ALSO CORRESPOND TO THE DYNAMIC BEHAVIOR OF ROCKS, CONTROLLED BY TEXTURAL FEATURES SUCH AS POROSITY TYPE AND PORE SPACE DISTRIBUTION (PORE THROAT). ROCK TYPES INTERPRETED FROM ELECTRICAL LOG RESPONSES ARE COMMONLY KNOWN AS ELECTRO-FACIES. FOR RESERVOIR MODELING, THE ROCK TYPES ARE DISTRIBUTED THROUGHOUT THE MODEL, GUIDING THE DISTRIBUTION OF PETROPHYSICAL PROPERTIES OF THE ROCKS PRESENT IN THE RESERVOIR. FLOW UNITS CAN BE CONSIDERED AS THE CO
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MASUTTI, LEONARDO, STEVENSON HALL, and JÁDISON DE OLIVEIRA. "PEREGRINO ROCK TYPES: AN ALTERNATIVE FOR PETROPHYSICAL PARAMETERS DISTRIBUTION." In Resumos do I Encontro Brasileiro de Petrofísica de Campos Maduros. Editora Realize, 2022. http://dx.doi.org/10.46943/i.ebpcm.2022.01.011.

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THE CREATION OF ROCK TYPES IS A PROCESS THAT MAKES IT POSSIBLE TO RELATE GEOLOGICAL FACIES AND PETROPHYSICAL PROPERTIES IN OIL RESERVOIRS. ROCK TYPES MUST ALSO CORRESPOND TO THE DYNAMIC BEHAVIOR OF ROCKS, CONTROLLED BY TEXTURAL FEATURES SUCH AS POROSITY TYPE AND PORE SPACE DISTRIBUTION (PORE THROAT). ROCK TYPES INTERPRETED FROM ELECTRICAL LOG RESPONSES ARE COMMONLY KNOWN AS ELECTRO-FACIES. FOR RESERVOIR MODELING, THE ROCK TYPES ARE DISTRIBUTED THROUGHOUT THE MODEL, GUIDING THE DISTRIBUTION OF PETROPHYSICAL PROPERTIES OF THE ROCKS PRESENT IN THE RESERVOIR. FLOW UNITS CAN BE CONSIDERED AS THE CO
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Sousa, Dayhana Fernandes de, Waleska Felesbina Jansen Viana, Cayara Mattos Costa, et al. "A SALIVA COMO FATOR DE RETENÇÃO DA PRÓTESE TOTAL: REVISÃO DE LITERATURA." In Odontologia: uma visão contemporânea - Volume 13. Editora Pascal LTDA, 2023. http://dx.doi.org/10.29327/5299938.1-9.

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A saliva desempenha um papel crucial na retenção da prótese total devido às suas múltiplas propriedades, além de garantir equilíbrio, função e saúde bucal. O objetivo deste trabalho é descrever a eficiência da saliva como elemento de retenção para a prótese total. Foi realizada uma revisão narrativa da literatura, com abordagem descritiva e qualitativa, buscando estudos bibliográficos clássicos e atuais nas bases de dados Biblioteca Virtual em Saúde, Pubmed, SciElo, e Google Acadêmico como fonte adicional. A saliva quando em declínio, pode causar uma série de problemas, sendo a sensação de boc
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Conference papers on the topic "Total pore volume"

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Roslan, Nurliana Binti, Salasiah Endud, Zainab Ramli, and Mohd Bakri Bakar. "Physicochemical Characterizations of Imidazolium-Based Ionic Liquids Functionalized on Mesoporous SBA-15." In International Conference on X-Rays and Related Techniques in Research and Industry 2023. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-bgbnm0.

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In this study, we report the functionalization of imidazolium-based ionic liquids (ImIL) onto mesoporous silica SBA-15 nanomaterial with a larger surface area of 737.96 m2/g and an interpore distance of 10.68 nm. Imidazolium-based ionic liquids, 1-(3-triethoxysilylpropyl)-methylimidazolium chloride was functionalized with concentration of 1.0, 2.0, 4.0, 6.0, 8.0 and 10.0 mmol onto SBA-15 via a sol-gel method to obtain xImIL-SBA-15 nanocomposites. Small-angle X-ray scattering (SAXS), N2 adsorption/desorption analysis and field emission scanning electron microscopy (FESEM) were used to character
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Tihomirovs, Pavels, and Aleksandrs Korjakins. "Pore-forming additives in glass-clay composition." In 22nd International Scientific Conference Engineering for Rural Development. Latvia University of Life Sciences and Technologies, Faculty of Engineering, 2023. http://dx.doi.org/10.22616/erdev.2023.22.tf126.

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The aim of the present research was to evaluate the influence of pore-forming additives on the composition of glass ceramics from glass waste with a gasifier, which allows production of lightweight materials with minimum weight. Gasifiers used in the research were charcoal, anthracite and soot. All samples were made from a composition consisting of glass, clay and a gasifier. Compression, water absorption tests, volume expansion measurements and SEM for the best test sample have been performed for the specimen with different compositions. Overall glass waste was used in an amount from 83.00% t
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Ma, Juntao, Lin Liang, Xi Yan, et al. "Pore System Characterization of Carbonate Rocks: A Multiphysics Approach Through Acoustic and NMR Measurements." In 2023 SPWLA 64th Annual Symposium. Society of Petrophysicists and Well Log Analysts, 2023. http://dx.doi.org/10.30632/spwla-2023-0051.

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Pore system characterization and, thus, permeability estimation in carbonate rocks have always been challenging due to the complexity of the carbonate rocks. Both acoustic and nuclear magnetic resonance (NMR) measurements have been employed individually to characterize different aspects of pore structure. In this study, we combine acoustic and NMR measurements for an improved, quantitative pore structure characterization of carbonate rocks. We first calculate the volume fractions of crack pores (microcracks and microfractures with a low aspect ratio), reference pores (interparticle pores with
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Li, Ying, and Mustafa Onur. "INSIM-3P: An Interwell Data-Driven Physics-Based Simulator for Three-Phase Flow." In SPE Reservoir Simulation Conference. SPE, 2025. https://doi.org/10.2118/223915-ms.

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Abstract In the past decade, the data-driven physics-based interwell numerical simulator (INSIM) has shown to be an attractive alternative to high-fidelity simulators when developing full-scale reservoir models is not feasible for practical applications. However, INSIM-based models are currently constrained to water flooding simulations. In this study, we present a novel simulator, as referred to INSIM-3P, which considers three-phase flow (oil, water, and gas) in porous media based on the INSIM-based approach. With a given space domain and specified well trajectory, a certain number of imagina
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Lindsay, Jeffrey D. "Relative Flow Porosity in Paper." In Products of Papermaking, edited by C. F. Baker. Fundamental Research Committee (FRC), Manchester, 1993. http://dx.doi.org/10.15376/frc.1993.2.935.

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Relative flow porosity is defined as the fraction of the void volume in a porous medium through which fluid can flow under a macroscopic pressure gradient. In saturated paper, much of the void volume is occupied by water that cannot flow due to chemical or physical absorption and mechanical obstruction (isolated or dead-end pores). In partially saturated paper, surface tension effects further hinder fluid flow through the sheet. In this paper, we discuss various methods for examining relative flow porosity and present results of new experimental techniques based on in-plane flow measurements.
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Bustos, U. D., C. Bernhardt, and L. Vera. "A Novel Approach for Improved Accuracy in Water Volume and Reservoir Quality Assessment During Field Development in Organic Shales." In ADIPEC. SPE, 2023. http://dx.doi.org/10.2118/216214-ms.

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Abstract Complexity in petrophysical interpretation in organic shales is related to the presence of inorganic and organic pores that house hydrocarbons, kerogen, and water. Advanced workflows were proposed for assessing hydrocarbon types and reservoir maturity. The water volume and saturation assessment are routinely done with archie equations, using resistivity, nuclear and/or sonic measurements. With proper matrix corrections on porosity computation and representative inputs of formation water salinity (Rw), wettability (N) and tortuosity (M), water saturation can be calculated. In organic s
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Palencia, Clara, Lori Hathon, and Michael Myers. "Corrections and Extensions to the GRI Technique: Dual Imbibition, NMR, and SEM Image Analysis." In 2022 SPWLA 63rd Annual Symposium. Society of Petrophysicists and Well Log Analysts, 2022. http://dx.doi.org/10.30632/spwla-2022-0063.

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The GRI (Gas Research Institute) technique for characterizing samples of unconventional reservoir formations is performed on crushed material, and typically used to measure the total porosity of unconventional reservoirs and to estimate their permeability. The addition of water and oil imbibition, NMR (Nuclear Magnetic Resonance), and SEM (Scanning Electron Microscope) imaging and image analysis allows an extension of that technique for the quantification of in situ pore fluid salinity, mineral hosted (water wet) and organic-matter hosted porosity (oil wet), and corrections to total porosity f
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Wu, Jing, Matthew Monette, Jeff Sickorez, et al. "New and Improved Single-Aqueous-Phase Retarded Acid SAPRA - Performance, Pore Volume Break through, and Wormhole Characterization." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206363-ms.

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Abstract Controlling the reactivity of HCl is the most viable approach to successfully stimulate a high-temperature carbonate reservoir. It is essential to retard the HCl-carbonate rock reaction to achieve the optimum balance between total fluid used and enhancing well production. However, drawbacks intrinsic to the technology architectures have prevented the industry-wide adoption of these inventions. For instance, the conventional emulsified acid is well documented to exhibit high friction pressure, is cumbersome to prepare, and performance is sensitive to a multitude of parameters. The rece
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Chan, K. C., Christopher Y. H. Chao, G. N. Sze-To, and K. S. Hui. "Development of New Zeolite 13X/CaCl2 Composite Adsorbent for Air-Conditioning Application." In ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54052.

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Composite adsorbents synthesized from zeolite 13X and CaCl2 were investigated for applications in solar adsorption systems. The effect of Ca-ion-exchange on the adsorption properties of zeolite 13X was studied. Sodium ions in the zeolite structure were replaced by calcium ions by ion exchange. It was found that the Ca-ion-exchange process decreased the specific surface areas of the Ca-ion-exchanged zeolites while the total pore volumes were increased. The optimized Ca-ion-exchange condition existed when soaking zeolite 13X in 46wt% CaCl2 solution for 36 hours. The increase in the total pore vo
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Shrestha, Subin, Thomas Starr, and Kevin Chou. "Porosity Analysis in Metal Additive Manufacturing by Micro-CT." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87897.

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This study aims at analyzing process-induced pores in selective laser melting (SLM), a laser powder-bed fusion additive manufacturing (AM) process. Porosity is one of the most problematic defects in SLM parts; it impairs the part performance, and yet, is sharply sensitive to the parameters of the SLM process itself. Detailed analysis of SLM pore formations using a computed tomography (CT) technique is desired in order to understand the porosity level under different process conditions. In this study, an SLM system was used to fabricate samples, using Ti-6Al-4V powder, with single tracks formed
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Reports on the topic "Total pore volume"

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Romero Ramírez, Álvaro Fernando. Nivel de conocimiento financiero de los propietarios de Minifundios que se dedican al cultivo de café del municipio de la Plata Huila. Universidad Nacional Abierta y a Distancia- UNAD, 2022. http://dx.doi.org/10.22490/ecacen.6305.

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De acuerdo con la Federación Nacional de Cafeteros de Colombia, la caficultura es el renglón productivo más importante del departamento del Huila por su participación en la producción total nacional (18.07%), generando ingresos y empleo productivo. Las mayores expectativas se encuentran en el café especial y es a lo que se está apuntando en estos últimos años; en ese campo se ha crecido sorprendentemente ya que el caficultor huilense está muy interiorizado que va por el camino correcto para garantizar calidad y sostenibilidad. Al cierre del 31 de diciembre del 2015 de acuerdo con el Comité Dep
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Tello-Casas, Patrocinio. El papel de China como acreedor financiero internacional. Banco de España, 2024. http://dx.doi.org/10.53479/38299.

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La deuda pública de los países de ingresos bajos y medianos se sitúa en niveles históricamente elevados, lo que ha aumentado el número de países en riesgo de crisis de deuda soberana. Este aumento ha venido acompañado de un cambio importante en la composición de los acreedores internacionales, del que destaca el nuevo papel de China como un acreedor internacional relevante y, en ocasiones, como prestamista de último recurso. En este contexto, resulta de interés conocer no solo el volumen, sino también las características de la financiación concedida por las instituciones oficiales de China a o
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Penagos Saldarriaga, Juan Camilo, and Carlos Mario Sossa Londoño. Impacto de la participación ciudadana en el control fiscal: análisis de las PQRSD en la Contraloría General de Antioquia (2020-2023). Contraloría General de Antioquia, 2024. https://doi.org/10.58373/obscga.024.

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En el presente artículo, se pretende analizar la participación ciudadana en el control fiscal de la Contraloría General de Antioquia, focalizándose en el uso del mecanismo de Peticiones, Quejas, Reclamos, Sugerencias y Denuncias (PQRSD) durante el periodo 2020-2023. El objetivo principal es evaluar cómo las solicitudes ciudadanas han influido en la identificación de hallazgos fiscales, analizando las dinámicas normativas y operativas que caracterizan este proceso. La metodología empleada es cuantitativa, basada en la recopilación de datos provenientes de registros oficiales de la Contraloría G
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Idárraga-Ortiz, Sergio Alejandro, and Viviana Marcela Vargas Leal. Informe métrico de la producción institucional en Scopus Universidad Santo Tomás, Bucaramanga 2021-2024. Universidad Santo Tomás, 2025. https://doi.org/10.15332/li.ivt.2025.00001.

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El informe analiza la producción científica de la Universidad Santo Tomás, Seccional Bucaramanga, durante el periodo 2021-2024, basándose en datos obtenidos de Scopus y empleando herramientas de análisis como VantagePoint y VOSViewer, todo ello bajo los lineamientos de la norma UNE 166006 (2018): "Sistema de Vigilancia e Inteligencia Competitiva". Este análisis identifica tendencias clave y ofrece un panorama detallado del desempeño académico e investigativo de la institución en dicho periodo. Algunos resultados que resaltar son los siguientes: la seccional Bucaramanga contribuyó con el 18% de
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Avis, William. Drivers, Barriers and Opportunities of E-waste Management in Africa. Institute of Development Studies (IDS), 2021. http://dx.doi.org/10.19088/k4d.2022.016.

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Population growth, increasing prosperity and changing consumer habits globally are increasing demand for consumer electronics. Further to this, rapid changes in technology, falling prices and consumer appetite for better products have exacerbated e-waste management challenges and seen millions of tons of electronic devices become obsolete. This rapid literature review collates evidence from academic, policy focussed and grey literature on e-waste management in Africa. This report provides an overview of constitutes e-waste, the environmental and health impacts of e-waste, of the barriers to ef
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Vargas-Herrera, Hernando, Pamela Andrea Cardozo-Ortiz, Daniel Esteban Osorio-Rodríguez, et al. Reporte de Estabilidad Financiera - II semestre 2020. Banco de la República de Colombia, 2020. http://dx.doi.org/10.32468/rept-estab-fin.sem2-2020.

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El sistema financiero colombiano no ha sufrido mayores traumatismos estructurales durante estos meses de profunda contracción económica, y ha continuado prestando con normalidad sus funciones básicas, facilitando la respuesta de la economía a condiciones extremas. Ello es el resultado de la solidez de las entidades financieras al inicio de la crisis, reflejada en elevados indicadores de liquidez y solvencia, y de la oportuna respuesta de distintas entidades. El Banco de la República redujo 250 puntos sus tasas de interés de política, hasta 1,75%, el menor nivel desde la creación del nuevo Banc
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Dufour, Quentin, David Pontille, and Didier Torny. Contracter à l’heure de la publication en accès ouvert. Une analyse systématique des accords transformants. Ministère de l'enseignement supérieur et de la recherche, 2021. http://dx.doi.org/10.52949/2.

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Cette étude porte sur une des innovations contemporaines liées à l’économie de la publication scientifique : les accords dits transformants, un objet relativement circonscrit au sein des relations entre consortiums de bibliothèques et éditeurs scientifiques, et temporellement situé entre 2015 et 2020. Ce type d’accords a pour objectif affiché d’organiser la transition du modèle traditionnel de l’abonnement à des revues (souvent proposées par regroupements thématiques ou collections) vers celui de l’accès ouvert en opérant une réaffectation des budgets qui y sont consacrés. Notre travail d’anal
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Editorial — Revista Acústica e Vibrações nº 54. Sociedade Brasileira de Acústica (Sobrac), 2022. http://dx.doi.org/10.55753/aev.v37e54.217.

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É com muita satisfação que a Comissão Editorial da Revista Acústica & Vibrações tem a honra de apresentar a sua quinquagésima quarta edição (volume 37). Neste número, prosseguimos na trajetória de inovação e expansão internacional, um esforço que se materializa no acolhimento de contribuições bilíngues — e, audaciosamente, trilíngues —, em português, espanhol e inglês. Já é possível observar o reflexo dessa iniciativa nas páginas que agora vos são ofertadas. Neste momento de transição, ainda sentimos os resquícios da pandemia que nos assolou. Contudo, a revista não apenas sobrevive como ta
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