Log in

Relevant bibliographies by topics / Average pore width / Journal articles

To see the other types of publications on this topic, follow the link: Average pore width.

Journal articles on the topic 'Average pore width'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Average pore width.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Lobasov, A. S., and A. V. Minakov. "The investigation of the average diameter of the SiO₂ nanoparticles effect on the oil displacing efficiency from the pore in the rock formation using nanosuspension as a displacing agent." Journal of Physics: Conference Series 2150, no. 1 (2022): 012025. http://dx.doi.org/10.1088/1742-6596/2150/1/012025.

Full text

Abstract:

Abstract The numerical investigation of the nanofluid flow, which displaced the oil, in a microchannel was carried out. The effect of the average diameter of the SiO2 nanoparticles on the oil displacing efficiency by nanofluids for different sizes of microchannel at various Reynolds numbers was studied. A T-shaped microchannel with a vertical channel, called a pore channel, which imitated the pore in the rock formation was considered as a computational domain. The main flow channel width and height were 200 µm. The width and height of the pore channel were varied in the range from 100 µm to 80

APA, Harvard, Vancouver, ISO, and other styles

2

Guo, Dong, Jocelyn Riet, Assad Khan, et al. "Mesoporous polyetherimide thin films via hydrolysis of polylactide-b-polyetherimide-b-polylactide." Polymer Chemistry 12, no. 27 (2021): 3939–46. http://dx.doi.org/10.1039/d1py00601k.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Song, Wenlong, Junyu Li, Kexin Li, Jingxu Chen, and Jianping Huang. "An Automatic Method for Stomatal Pore Detection and Measurement in Microscope Images of Plant Leaf Based on a Convolutional Neural Network Model." Forests 11, no. 9 (2020): 954. http://dx.doi.org/10.3390/f11090954.

Full text

Abstract:

Stomata are microscopic pores on the plant epidermis that regulate the water content and CO2 levels in leaves. Thus, they play an important role in plant growth and development. Currently, most of the common methods for the measurement of pore anatomy parameters involve manual measurement or semi-automatic analysis technology, which makes it difficult to achieve high-throughput and automated processing. This paper presents a method for the automatic segmentation and parameter calculation of stomatal pores in microscope images of plant leaves based on deep convolutional neural networks. The pro

APA, Harvard, Vancouver, ISO, and other styles

4

Zhang, Man Cheng, Wei Wang, Cong Jian Huang, and Ai Min Li. "Adsorption Behaviors of Chlortetracycline on Granular Activated Carbons." Advanced Materials Research 610-613 (December 2012): 1701–4. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.1701.

Full text

Abstract:

The adsorption behaviors of chlortetracycline on two kinds of granular activated carbons with different BET surface area and average pore width have been studied. The results show that larger BET surface area is beneficial for the adsorption capacity, and wider pore structure can enhance the adsorption rate. Initial solution pH has great effect on the adsorption behavior, and the suitable pH for the effective adsorption is from 4 to 8.

APA, Harvard, Vancouver, ISO, and other styles

5

Lobasov, A. S., and A. V. Minakov. "The investigation of the efficiency of oil displacing from the pore in the rock formation depending on the width and height of the pore using nanosuspension as a displacing agent." Journal of Physics: Conference Series 2119, no. 1 (2021): 012052. http://dx.doi.org/10.1088/1742-6596/2119/1/012052.

Full text

Abstract:

Abstract The numerical investigation of the two-phase fluid flow in a microchannel was carried out. The effect of the pore width and height on the oil displacing efficiency by nanofluids for various Reynolds numbers was studied. The computational domain was a T-shaped microchannel with a horizontal main flow channel and a vertical channel that imitated the pore in the rock formation, called a pore channel. The main channel width and height were 200 µm, and the pore channel width and height were varied in the range from 100 µm to 800 µm. The Reynolds number was varied from 0.1 to 100. The main

APA, Harvard, Vancouver, ISO, and other styles

6

Çopur Akpınar, Gülşen, Sema Alaşahan, and Sibel Canoğulları Doğan. "Halk Elinde Yetiştirilen Pekin Ördeklerinde Matematiksel Formüller İle Yumurta Kalite Özelliklerinin Belirlenmesi." Turkish Journal of Agriculture - Food Science and Technology 5, no. 12 (2017): 1470. http://dx.doi.org/10.24925/turjaf.v5i12.1470-1475.1393.

Full text

Abstract:

This study was carried out with the aim of determining some internal and external quality characteristics of pekin duck eggs grown by families living in rural Hatay province by using mathematical formulas. In the study, 417 pekin duck eggs were used and with the help of mathematical formulas based on individual egg weight values, egg length and width, egg surface area, egg shell weight and thickness, pore number, egg yolk ratio values were calculated. Average egg length calculated according to egg weight were determined as 62,48 mm, egg width 43.76 mm, egg shell thickness 0.358 mm, egg shell w

APA, Harvard, Vancouver, ISO, and other styles

7

Xu, Gui Xi, Shu Zhong Wang, Xiang Rong Luo, and Ze Feng Jing. "Investigation on Jurassic Shale Gas Reservoir Characteristics from Northern Qaidam Basin." Key Engineering Materials 748 (August 2017): 441–45. http://dx.doi.org/10.4028/www.scientific.net/kem.748.441.

Full text

Abstract:

The Jurassic continental shale from northern Qaidam basin was selected as the research object, through the analysis of X-ray diffraction (XRD), field emission scanning electron microscopy (SEM) and nitrogen adsorption experiment, the mineral composition and pore structure characteristics of Jurassic continental shale from the northern Qaidam basin have been investigated in detail. All shale samples studied are quite rich in clay minerals. The clay mineral content ranges from 59.8% to 83.3% with an average of 74.6%, and the brittle mineral content accounts for 16.5% to 39.3%. Nitrogen adsorptio

APA, Harvard, Vancouver, ISO, and other styles

8

Chen, Shitong, Jinlei Wang, and Yongfei Yang. "Numerical Simulation of Oil-Water Two-phase Conductivity in Hydraulic Fracturing Considering Proppant Crushing." Journal of Physics: Conference Series 2503, no. 1 (2023): 012026. http://dx.doi.org/10.1088/1742-6596/2503/1/012026.

Full text

Abstract:

Abstract Hydraulic fracturing can effectively increase reservoir productivity, and the effect depends on proppant behavior. Crushing of proppant during fracturing induces a series of changes in fracture width and the pore space formed between proppant particles, affecting reservoir fluid flow. For exploring the flow law of oil and water in proppant fractures, the discrete element method (DEM) and Tavares crushing model were combined to simulate the proppant crush process. At the same time, based on the formed pore space, the flow law of two phase fluid under the influence of such factors as th

APA, Harvard, Vancouver, ISO, and other styles

9

Li, Jia, Ming-Ming Mao, Min Gao, Qiang Chen, Jun-Rui Shi, and Yong-Qi Liu. "A Multi-Scale Numerical Model for Investigation of Flame Dynamics in a Thermal Flow Reversal Reactor." Energies 15, no. 1 (2022): 318. http://dx.doi.org/10.3390/en15010318.

Full text

Abstract:

In this paper, the flame dynamics in a thermal flow reversal reactor are studied using a multi-scale model. The challenges of the multi-scale models lie in the data exchanges between different scale models and the capture of the flame movement of the filtered combustion by the pore-scale model. Through the multi-scale method, the computational region of the porous media is divided into the inlet preheating zone, reaction zone, and outlet exhaust zone. The three models corresponding to the three zones are calculated by volume average method, pore-scale method, and volume average method respecti

APA, Harvard, Vancouver, ISO, and other styles

10

Yue, Rong, and Qiang Zhang. "A Pore-Scale Model for Quantifying Airflow Paths through Grain Bulks." Transactions of the ASABE 60, no. 3 (2017): 965–72. http://dx.doi.org/10.13031/trans.12032.

Full text

Abstract:

Abstract. A commercial discrete element software package (PFC3D) was used to develop a model to simulate pore structures of grain beds. Based on the simulated structure of a grain bed, an algorithm reported in the literature was adopted and modified to determine airflow paths in the grain bed by treating the grain bed as a series of four-particle tetrahedrons. Critical characteristic parameters of the airflow path were predicted, including path length (tortuosities), width, and local turning angle (change in airflow direction at a location in the grain bed). The predicted tortuosities were in

APA, Harvard, Vancouver, ISO, and other styles

11

Rauter, Michael T., Olav Galteland, Máté Erdős, et al. "Two-Phase Equilibrium Conditions in Nanopores." Nanomaterials 10, no. 4 (2020): 608. http://dx.doi.org/10.3390/nano10040608.

Full text

Abstract:

It is known that thermodynamic properties of a system change upon confinement. To know how, is important for modelling of porous media. We propose to use Hill’s systematic thermodynamic analysis of confined systems to describe two-phase equilibrium in a nanopore. The integral pressure, as defined by the compression energy of a small volume, is then central. We show that the integral pressure is constant along a slit pore with a liquid and vapor in equilibrium, when Young and Young–Laplace’s laws apply. The integral pressure of a bulk fluid in a slit pore at mechanical equilibrium can be unders

APA, Harvard, Vancouver, ISO, and other styles

12

Zhou, Xing. "Study on Microscopic Pore Structure Characteristics of Tight Sandstone Reservoir." International Journal of Electric Power and Energy Studies 3, no. 2 (2024): 16–22. https://doi.org/10.62051/ijepes.v3n2.03.

Full text

Abstract:

The micro-nano scale pore throat of tight sandstone reservoir (TSR) will have a significant impact on the macroscopic seepage capacity of the reservoir. Based on X-ray diffraction (XRD), cast thin section (CTS), scanning electron microscopy (SEM), CT scanning and other testing methods, this paper studies the microscopic pore structure characteristics of tight sandstone reservoirs. The experimental results show that the quartz content of the core samples of the Chang 8 section of the tight sandstone reservoir is the highest, with an average value of 44.19%. The second is plagioclase, with an av

APA, Harvard, Vancouver, ISO, and other styles

13

Yang, Xiaoyuan, Jing Liu, Qiubin Kan, and Jingqi Guan. "Anchoring Tri(8-Quinolinolato)Iron Onto Sba-15 for Partial Oxidation of Benzyl Alcohol Using Water as the Solvent." Polish Journal of Chemical Technology 16, no. 3 (2014): 12–17. http://dx.doi.org/10.2478/pjct-2014-0043.

Full text

Abstract:

Abstract Tri(8-quinolinolato)iron complex immobilized onto SBA-15 catalyst has been synthesized through a stepwise procedure. The characterization results indicated that the BET surface area, total pore volume and average pore width decrease after stepwise modification of SBA-15, while the structure keeps intact. Catalytic tests showed that FeQ3-SBA-15 catalyzes the oxidation reaction well with 34.8% conversion of benzyl alcohol and 74.7% selectivity to benzaldehyde when water is used as the solvent after 1 h reaction. In addition, homogeneous catalyst tri(8-quinolinolato)iron exhibits very ba

APA, Harvard, Vancouver, ISO, and other styles

14

TOKUŞOĞLU, KADER VARLIK, METİN ARMAĞAN, and ALİ SAVAŞ BÜLBÜL. "Pollen morphology of Eremogone (Caryophyllaceae) in Türkiye." Phytotaxa 671, no. 2 (2024): 144–64. http://dx.doi.org/10.11646/phytotaxa.671.2.4.

Full text

Abstract:

The palynological characters of 17 taxa belonging to genus Eremogone Fenzl (Caryophyllaceae) from Türkiye were examined using light microscopy and scanning electron microscopy. Eremogone pollen in Türkiye is found to have an average size of 31.31 μm (26.62‒36.65 μm), pore sizes ranging from 6.52 to 9.24 μm, inter-pore distances ranging from 9.07 to 12.57 μm, pore numbers varying from 5 to 14 and 5‒30 nanoechini distributed in an area of 10 × 10 µm. The ornamentation was identified as nanoperforate, nanoechinate, or nanofaveolate surface elements in various combinations. Clustering analysis and

APA, Harvard, Vancouver, ISO, and other styles

15

Awadallah-F, Ahmed, and Shaheen A. Al-Muhtaseb. "The Effect of Chitosan’s Addition to Resorcinol/Formaldehyde Xerogels on the Characteristics of Resultant Activated Carbon." Materials 12, no. 23 (2019): 3847. http://dx.doi.org/10.3390/ma12233847.

Full text

Abstract:

Hybrid chitosan-resorcinol/formaldehyde xerogels were synthesized, and the effect of including minor quantities of chitosan on the consequent activated carbon was investigated. The resulting activated carbon were characterized by different techniques. Clear changes were found in the structure of activated carbon as a result of including chitosan in the synthesis. The results showed that the disorder ratio of crystal lattice decreased from 0.750 to 0.628 when increasing the concentration of chitosan from 0 to 0.037 wt%. The micropores increased from ~0.3% to ~1.0%, mesopores increased from ~11.

APA, Harvard, Vancouver, ISO, and other styles

16

Fahlén, Jesper, and Lennart Salmén. "Ultrastructural changes in a holocellulose pulp revealed by enzymes, thermoporosimetry and atomic force microscopy." Holzforschung 59, no. 6 (2005): 589–97. http://dx.doi.org/10.1515/hf.2005.096.

Full text

Abstract:

Abstract To increase our knowledge of the ultrastructure within softwood fibres, enzymatic treatment, thermoporosimetry, light microscopy, and atomic force microscopy with image analysis were used to investigate the structure of holocellulose softwood pulp fibres. The size of the average cellulose fibril aggregates and the width of pore and matrix lamellae were found to be uniform across the secondary cell-wall layer in the transverse direction of the wood fibre wall. In holocellulose, these dimensions were very similar to those in the native wood, whereas in kraft pulp the cellulose fibril ag

APA, Harvard, Vancouver, ISO, and other styles

17

González García, Pedro, Esteban Urones-Garrote, David Ávila-Brande, Leandro García-González, and L. Carlos Otero-Díaz. "Structural and Textural Study of Highly Porous Carbon Nanospheres." Advanced Materials Research 976 (June 2014): 36–40. http://dx.doi.org/10.4028/www.scientific.net/amr.976.36.

Full text

Abstract:

Highly porous carbon nanospheres, external diameter ranging from 40 to 240 nm, have been produced from the chlorination reaction of metallocenes and derivatives at 900 °C. Their nanostructure, studied by Raman spectroscopy, consists of highly disordered graphene-like layers with size below to 6 nm. Their textural parameters showed surface area as high as 1320 m2/g and average pore width of 1.1 nm.

APA, Harvard, Vancouver, ISO, and other styles

18

Tsunoda, Ryoichi, and Jun-ichi Ando. "Adsorption of water vapor on active carbons: Estimation of the average pore width from the magnitude of the hysteresis loop." Journal of Colloid and Interface Science 146, no. 1 (1991): 291–93. http://dx.doi.org/10.1016/0021-9797(91)90025-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Park, Go Eun, Ki Woo Kim, Don Koo Lee, and Jung Oh Hyun. "Adaptive Phenotypic Plasticity of Siberian Elm in Response to Drought Stress: Increased Stomatal Pore Depth." Microscopy and Microanalysis 19, S5 (2013): 178–81. http://dx.doi.org/10.1017/s1431927613012610.

Full text

Abstract:

AbstractLeaf stomatal characteristics of Siberian elm (Ulmus pumila) were investigated by electron microscopy and white light scanning interferometry. On the basis of average annual precipitations, two types of tree specimens were collected from Korea, China, and Mongolia: (1) trees under normal environmental conditions and (2) trees under arid conditions. Field emission scanning electron microscopy revealed oval-shaped stomata on the lower surface, and they were ca. 20 μm in width. In-lens secondary electron imaging showed differences in electron density and stomatal pore depth between the tw

APA, Harvard, Vancouver, ISO, and other styles

20

Rahmawati, Atiqa, Fadzkurisma Robbika, and Yuafni Yuafni. "Preparation of Activated Carbon from Sugarcane Bagasse Using Microwave-assisted ZnCl2 Chemical Activation: Optimization and Characterization Study." Pertanika Journal of Science and Technology 32, no. 1 (2024): 419–36. http://dx.doi.org/10.47836/pjst.32.1.22.

Full text

Abstract:

Microwave-assisted activation is a green technology technique that can synthesize activated carbon from bagasse. In this study, microwave-assisted ZnCl2 chemical activation was applied to convert bagasse to activated carbon (BAC). Activating activated carbon was optimized using surface response methodology (RSM). The Box-Behnken (BBD) design was used to assist in the optimum synthesis condition, with the loading of ZnCl2 concentration (A: 10–50% w/v), heating time (B: 2–12 min), and microwave power (C: 150–800 W). The BAC was characterized using Brunauer-Emmett-Teller (BET), Scanning Electron

APA, Harvard, Vancouver, ISO, and other styles

21

Goldberg, Margarita A., Olga S. Antonova, Nadezhda O. Donskaya, et al. "Effects of Various Ripening Media on the Mesoporous Structure and Morphology of Hydroxyapatite Powders." Nanomaterials 13, no. 3 (2023): 418. http://dx.doi.org/10.3390/nano13030418.

Full text

Abstract:

Mesoporous hydroxyapatite (HA) materials demonstrate advantages as catalysts and as support systems for catalysis, as adsorbent materials for removing contamination from soil and water, and as nanocarriers of functional agents for bone-related therapies. The present research demonstrates the possibility of the enlargement of the Brunauer–Emmett–Teller specific surface area (SSA), pore volume, and average pore diameter via changing the synthesis medium and ripening the material in the mother solution after the precipitation processes have been completed. HA powders were investigated via chemica

APA, Harvard, Vancouver, ISO, and other styles

22

Chen, Yue Chao, Chen Long Yang, Zhao Li, and Hui Feng Zheng. "Contrastive Analysis of Pores for the CFRP Laminates and Corner of L-Shape CFRP Components." Advanced Materials Research 807-809 (September 2013): 2743–47. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.2743.

Full text

Abstract:

The compare of distribution and morphology for the pores in the CFRP laminates and the corner of L-shape CFRP components is analyzed, and the conclusions are as follows. The pores in the corner of L-shape CFRP components and CFRP laminates are all spherical or ellipsoidal and the sizes are small when the porosity is small. As the porosity increases, the pores in the laminates become elongated type, while the pores in the corners become centralized. When the porosity is further increased, irregular pores in the fiber bundle of the corners appear, and the tenuous pores in interlayer of the lamin

APA, Harvard, Vancouver, ISO, and other styles

23

Wang, Zhipu, Shun Liu, Kai Liu, Shibo Ji, Mingming Wang, and Xinqian Shu. "Effect of temperature on pyrolysis of sewage sludge: biochar properties and environmental risks from heavy metals." E3S Web of Conferences 237 (2021): 01040. http://dx.doi.org/10.1051/e3sconf/202123701040.

Full text

Abstract:

Biochars were prepared via the pyrolysis of sewage sludge at temperatures ranging from 350–550 °C. The properties and behaviors of heavy metals in the biochars were investigated. The results indicated that the pH values and ash contents of the biochars increased, while biochar yield and C, H, and N contents decreased with the increasing temperature. A high pyrolysis temperature contributed to a developed biochar pore structure. The specific surface area and pore volume of the biochars increased, while the average pore width decreased, with the increasing temperature. Heavy metals in the biocha

APA, Harvard, Vancouver, ISO, and other styles

24

Nick, Arash Safavi, and Hasse Fredriksson. "On the Relationship between Inclusions and Pores, Part II: Dendritic Structure, Pressure Drop in the Liquid and Pore Precipitation ." Materials Science Forum 790-791 (May 2014): 302–7. http://dx.doi.org/10.4028/www.scientific.net/msf.790-791.302.

Full text

Abstract:

There is a relationship between pores and inclusions. As hypothesis goes, inclusions have an affinity to gather inside the pores and form clusters. Focus of this paper is how solidified dendritic structure affects the pressure field in the liquid and pore precipitation in austenitic stainless steel. Steel sample is a continuously cast bloom. Temperature profile and width of the mushy zone of the strand is modeled according to a constant temperature at the strands surface. Thermal analysis has been performed with differential thermal analysis (DTA) and differential scanning calorimeter (DSC). D

APA, Harvard, Vancouver, ISO, and other styles

25

Qin, Xuebin, Lang Liu, Pai Wang, Mei Wang, and Jie Xin. "Microscopic Parameter Extraction and Corresponding Strength Prediction of Cemented Paste Backfill at Different Curing Times." Advances in Civil Engineering 2018 (May 27, 2018): 1–9. http://dx.doi.org/10.1155/2018/2837571.

Full text

Abstract:

To accurately and intuitively study the influence of microscopic parameters and mechanical responses of the consolidation process of cemented paste backfill (CPB), a method is proposed for characterizing its geometric and morphological characteristics and its mechanical response. A set of microstructure parameter software is developed for analyzing the CPB consolidation process, which quantitatively analyzes the mechanical response of CPBs at a microscopic scale. Based on the fuzzy clustering method, CPB microscopic pore images are extracted via digital image processing technology. Microscopic

APA, Harvard, Vancouver, ISO, and other styles

26

Tiburu, Elvis K., Heidimarie N. A. Fleischer, Edmund O. Aidoo, Ali Salifu, Bernard O. Asimeng, and Han Zhou. "Crystallization of Linde Type A Nanomaterials at Two Temperatures Exhibit Differential Inhibition of HeLa Cervical Cancer Cells In Vitro." Journal of Biomimetics, Biomaterials and Biomedical Engineering 28 (July 2016): 66–77. http://dx.doi.org/10.4028/www.scientific.net/jbbbe.28.66.

Full text

Abstract:

This work reports evidence of the synthesis of zeolite A at two different temperatures (60 °C and 105 °C) from kaolin. XRD spectral analysis revealed percent crystallinity of 74 ± 2 and 71 ± 3 in LTA60 and LTA105 respectively. The average crystallize size of LTA60 and LTA105 was also estimated using Scherrer’s equation to be 57 nm. FTIR analysis showed signature peaks characteristics of zeolite A in the two materials, except the appearance of absorbance peak at 2380 cm− 1 in the LTA60 spectrum which was not observed in LTA105. Nitrogen porosity measurements of LTA60 and LTA105 gave the followi

APA, Harvard, Vancouver, ISO, and other styles

27

Wang, Youzhi, Wei Li, Xiandong Wang, et al. "Nanopore Structure and Multifractal Characteristics of Continental Shale Oil Reservoir: A Case Study from Ziliujing Shales in the Sichuan Basin." Journal of Marine Science and Engineering 11, no. 10 (2023): 1989. http://dx.doi.org/10.3390/jmse11101989.

Full text

Abstract:

Thermal maturity of the shales from the Ziliujing Formation of the Jurassic age in the Sichuan Basin is in the hydrocarbon generation window, which makes it a candidate for shale oil and gas development. The meso- and macropore characteristics and heterogeneity of shales are important factors affecting the occurrence and development of oil and gas. However, the meso- and macropores of the Ziliujing shales have not been systematically studied. Thus, the mineral compositions and total organic carbon (TOC) of samples from this formation, as well as its pore structure, are analyzed by low-temperat

APA, Harvard, Vancouver, ISO, and other styles

28

Lei, Qinhui, Donghui Zhang, Lei Feng, Jijin Mao, and Daifen Chen. "Boiling Heat Transfer Characteristics of Porous Microchannel with Pore-Forming Agent." Processes 11, no. 2 (2023): 617. http://dx.doi.org/10.3390/pr11020617.

Full text

Abstract:

Traditional microchannel needs to face the flow-reversal difficulty in high heat fluxes due to limited space. It results in large pressure and temperature fluctuation. Porous microchannels arouse more interest to provide a new solution to this problem. Flow boiling experiments in porous microchannels with PFA were investigated. Porous microchannels were sintered by 10 μm (or 30 μm) spherical copper particles with pore-forming agent (Na2CO3, 60–90 μm). Porous microchannels were composed of 23 parallel porous microchannels with 600 μm in width and 1200 μm in depth.The addition of PFA (pore-formi

APA, Harvard, Vancouver, ISO, and other styles

29

Li, Xianxian, Xijian Li, Enyu Xu, et al. "Experimental research on the influence of acid on the chemical and pore structure evolution characteristics of Wenjiaba tectonic coal." PLOS ONE 19, no. 4 (2024): e0301923. http://dx.doi.org/10.1371/journal.pone.0301923.

Full text

Abstract:

The chemical and pore structures of coal play a crucial role in determining the content of free gas in coal reservoirs. This study focuses on investigating the impact of acidification transformation on the micro-physical and chemical structure characteristics of coal samples collected from Wenjiaba No. 1 Mine in Guizhou. The research involves a semi-quantitative analysis of the chemical structure parameters and crystal structure of coal samples before and after acidification using Fourier Transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) experiments. Additionally, the evolutio

APA, Harvard, Vancouver, ISO, and other styles

30

Zeng, Zhe, and Dengxiang Zhang. "Evolution of High Toughness Cementitious Composites Gas Permeability after Thermal-Mechanical Coupling Damage." Buildings 14, no. 7 (2024): 1923. http://dx.doi.org/10.3390/buildings14071923.

Full text

Abstract:

High-toughness cementitious composite (HTCC) may be considered for use as a concrete lining material for underground lined rock caverns in compressed air energy storage (CAES) power stations. This experiment investigated the effect of coupled thermal-mechanical cycling on the changes in the gas permeability and pore structure of HTCC. According to the different operating conditions of CAES power stations, nine test conditions were selected with a compressive stress of 10 MPa and a temperature of 150 °C. The test results show that the HTCC have a peak tensile strain of up to 1.6% and an average

APA, Harvard, Vancouver, ISO, and other styles

31

Meng, Ling Dong, Yue Lan Di, Wei Shen, Qing Zhang, and Jun Tan. "Study on Squitter Pulse Argon-Arc Welding Technology for Repairing Balance Shaft Parts." Advanced Materials Research 1004-1005 (August 2014): 1391–95. http://dx.doi.org/10.4028/www.scientific.net/amr.1004-1005.1391.

Full text

Abstract:

Squitter pulse argon-arc welding technology due to its unique way of energy output, has the quick repairing speed, low heat input and high bonding strength on the repairing process. The results of balance shaft parts after repairing by squitter pulse argon-arc welding technology showed that there was no significant micro–pore but closed combination between the substrate and repaired layer. The width of HAZ was 350μm, the average hardness of repaired layer was 420HV, and the wear-resisting property was improved about 36.4%, compared to the substrate. The squitter pulse argon-arc welding technol

APA, Harvard, Vancouver, ISO, and other styles

32

Dhiman, Sahil, Malkeet Singh, Sarabjeet Singh Sidhu, Marjan Bahraminasab, Danil Yurievich Pimenov, and Tadeusz Mikolajczyk. "Cubic Lattice Structures of Ti6Al4V under Compressive Loading: Towards Assessing the Performance for Hard Tissue Implants Alternative." Materials 14, no. 14 (2021): 3866. http://dx.doi.org/10.3390/ma14143866.

Full text

Abstract:

Porous Lattice Structure (PLS) scaffolds have shown potential applications in the biomedical domain. These implants’ structural designs can attain compatibility mechanobiologically, thereby avoiding challenges related to the stress shielding effect. Different unit cell structures have been explored with limited work on the fabrication and characterization of titanium-based PLS with cubic unit cell structures. Hence, in the present paper, Ti6Al4V (Ti64) cubic PLS scaffolds were analysed by finite element (FE) analysis and fabricated using selective laser melting (SLM) technique. PLS of the rect

APA, Harvard, Vancouver, ISO, and other styles

33

Zhang, Libo, Jianing Wang, Hui Ming, et al. "Investigation of Cotton Stalk-Derived Hydrothermal Bio-Oil: Effects of Mineral Acid/Base and Oxide Additions." Energies 17, no. 19 (2024): 4854. http://dx.doi.org/10.3390/en17194854.

Full text

Abstract:

Hydrothermal liquefaction technology (HTL) is a promising thermochemical method to convert biomass into novel liquid fuels. The introduction of oxides and inorganic acids/bases during the hydrothermal process significantly impacts the yield and composition of bio-oil. However, systematic research on their effects, especially at lower temperatures, remains limited. In this paper, we examine the effects of acidity and alkalinity on cotton stalk hydrothermal bio-oil by introducing homogeneous acids and bases. Given the operational challenges associated with product separation using homogeneous ac

APA, Harvard, Vancouver, ISO, and other styles

34

Lee, Jungsub, Minshik Lee, Im Doo Jung, et al. "Correlation Between Microstructure and Tensile Properties of STS 316L and Inconel 718 Fabricated by Selective Laser Melting (SLM)." Journal of Nanoscience and Nanotechnology 20, no. 11 (2020): 6807–14. http://dx.doi.org/10.1166/jnn.2020.18792.

Full text

Abstract:

The correlation between microstructure and tensile properties of selective laser melting (SLM) processed STS 316L and Inconel 718 were investigated at various heights (top, middle and bottom) and planes (YZ, ZX and XY). Columnar grains and dendrites were formed by directional growth during solidification. The average melt pool width and depth, and scan track width were similar in both specimens due to fixed processing parameters. SLM Inconel 718 has moderate tensile strength (1165 MPa) and tensile elongation (11.5%), whereas SLM STS 316L has outstanding tensile strength (656 MPa) and tensile e

APA, Harvard, Vancouver, ISO, and other styles

35

Ulfa, Maria, Wega Trisunaryanti, Iip Izul Falah, and Indriana Kartini. "INFLUENCE OF TIME AND CONCENTRATION ON TEXTURAL PROPERTIES OF MESOPOROUS CARBONS OF GELATIN PREPARED BY HARD-TEMPLATING PROCESS." JKPK (Jurnal Kimia dan Pendidikan Kimia) 1, no. 1 (2020): 1. http://dx.doi.org/10.20961/jkpk.v1i1.10126.

Full text

Abstract:

<p> </p><table class="data" width="100%"><tbody><tr valign="top"><td class="value"><p>Mesoporous carbons with different textural properties were prepared with gelatin by hard templating process. The effect silica removal condition (time and acid concentration) on the nanocomposite properties was studied during synthesis process. 1, 6, and 24 h silica removal times and 10%, 20%, 30% and 40% HF concentraton were chosen. Textural properties and microstructure of the nanocomposites were characterized by X-ray diffraction (XRD), Transmission Electron Micros

APA, Harvard, Vancouver, ISO, and other styles

36

Maree, Danya Carla, and Mike Heydenrych. "Development of a Mesoporous Silica-Supported Layered Double Hydroxide Catalyst for the Reduction of Oxygenated Compounds in E. grandis Fast Pyrolysis Oils." Catalysts 11, no. 12 (2021): 1527. http://dx.doi.org/10.3390/catal11121527.

Full text

Abstract:

Biomass fast pyrolysis oil is a potential renewable alternative to fossil fuels, but its viability is constrained by its corrosiveness, low higher heating value and instability, caused by high oxygenate concentrations. A few studies have outlined layered double hydroxides (LDHs) as possible catalysts for the improvement of biomass pyrolysis oil characteristics. In this study, the goal was to reduce the concentration of oxygen-rich compounds in E. grandis fast pyrolysis oils using CaAl- and MgAl- LDHs. The LDHs were supported by mesoporous silica, synthesised at different pHs to obtain differen

APA, Harvard, Vancouver, ISO, and other styles

37

Ali, Mujahid, Faisal Mahmood, Christian Magoua Mbeugang, Jiazhen Tang, and Bin Li. "Influence of hydrolysis on pyrolysis products from sewage sludge." Thermal Science, no. 00 (2024): 65. http://dx.doi.org/10.2298/tsci231208065a.

Full text

Abstract:

In this research endeavor, the influence of thermal hydrolysis treatment (THT) on product distribution obtained through the pyrolysis of hydrolysis-treated sludge (HTS) and raw sewage sludge (RSS) was investigated. RSS sample was received from a municipal sewage sludge treatment plant, and hydrolysis of sewage sludge (SS) was performed at a temperature of 200?C and a pressure of 0.4 MPa in a fixed-bed furnace. The pore structure of the obtained biochar and non-condensable gas collected at various temperatures was analyzed via Brunauer, Emmett, and Teller (BET) and gas chromatography (GC) techn

APA, Harvard, Vancouver, ISO, and other styles

38

Kim, Kyu-Sik, Min-Chul Shim, Man-Ho Park, Jung-Yeul Yun, and Kee-Ahn Lee. "Asymmetry in the Mechanical Properties of Block Ni-Cr-Al Superalloy Foam Fabricated by the Combination of Powder Alloying and Hot Rolling Processes." Korean Journal of Metals and Materials 58, no. 2 (2020): 103–11. http://dx.doi.org/10.3365/kjmm.2020.58.2.103.

Full text

Abstract:

A block Ni-Cr-Al superalloy foam with dimensions of 300 mm (width direction, WD) × 500 mm (rolling direction, RD) × 60 mm (normal direction, ND) was fabricated using powder alloying, multi-sheet stacking, and hot rolling processes. The structural characteristics, microstructure, and mechanical asymmetry of the block Ni-based foam were investigated. Analysis of the structural features showed that the interfaces between the sheets had complex strut interactions, such as contacted (deformed) and intersected struts. The average pore size along the directions was measured to be 2569.6 μm (WD), 2988

APA, Harvard, Vancouver, ISO, and other styles

39

FINOTELLO, DANIELE, and GERMANO S. IANNACCHIONE. "HIGH RESOLUTION CALORIMETRIC STUDIES AT PHASE TRANSITIONS OF ALKYLCYANOBIPHENYL LIQUID CRYSTALS CONFINED TO SUBMICRON SIZE CYLINDRICAL CAVITIES." International Journal of Modern Physics B 09, no. 18n19 (1995): 2247–83. http://dx.doi.org/10.1142/s0217979295000884.

Full text

Abstract:

We review results of a high resolution systematic study of the specific heat for alkyl-cyanobiphenyl liquid crystals confined to the 0.2µm diameter cylindrical pores Anopore membranes. The nematic director alignment at the pore wall is varied from homeotropic to tangential by pore surface treatment. Several phenomena are uncovered by these studies which probed the weakly first order nematic to isotropic, the continuous smectic-A to nematic and the first order smectic-A to isotropic phase transitions. The specific heat is strongly dependent on the nematic director configuration, and confinement

APA, Harvard, Vancouver, ISO, and other styles

40

Anis Nabilah Mohd Daud, Rosfariza Radzali, Ainorkhilah Mahmood, et al. "Enhancement of Structural and Optical Characteristics of Nanostructured InGaN Using Electrochemical Etching." International Journal of Nanoelectronics and Materials (IJNeaM) 16, DECEMBER (2023): 347–59. http://dx.doi.org/10.58915/ijneam.v16idecember.416.

Full text

Abstract:

In this work, we used an alternating current electrochemical etching technique to fabricate nanostructured InGaN in potassium hydroxide, which serves as an electrolyte. The effects of different current densities during alternating current electrochemical etching on the morphological and optical characteristics of the nanostructured InGaN samples were investigated. The morphology of the nanostructured InGaN samples was determined by extreme high resolution field emission scanning electron microscopy. The pore size (~38 nm) and estimated porosity (~35%) were highest at 250 mA/cm2 current density

APA, Harvard, Vancouver, ISO, and other styles

41

Eleroğlu, Hasan. "Beç Tavuklarında (Numida meleagris) Sayısal Görüntü Analizi ve Matematiksel Formüller Kullanılarak Yumurta Kalite Özelliklerinin Belirlenmesi." Turkish Journal of Agriculture - Food Science and Technology 9, no. 11 (2021): 2056–64. http://dx.doi.org/10.24925/turjaf.v9i11.2056-2064.4839.

Full text

Abstract:

A total of 200 Guinea fowl (Numidae meleagris) eggs were obtained from guinea fowl flock at the age of 42 weeks of age, which are breeding at an altitude of 1240 m in the Wild Animals Breeding Station affiliated to Ministry of Forest and Water Affairs in Yozgat/Turkey. Eggs were taken at a resolution of 72 pixels per inch and 5184 × 3456 pixels in size, with the individual egg weights. Average Projection area (16,07 cm2), Perimeter (15,82 cm), Circularity (0,81), Height (5,17 cm), Width (4,04 cm), Mean grey value (82,82), Semi axis (2,02 cm), First long half height (2,96 cm), Second short half

APA, Harvard, Vancouver, ISO, and other styles

42

Zhao, Zhun, Zhenhua Li, Penglei Cui, Shengli Li, and Lingqian Kong. "Adsorption of Basic Brown and Chrysophenine from Water Solution by Magnesium Silicate Gel." Journal of Chemistry 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/374190.

Full text

Abstract:

Noncrystalline, high surface area magnesium silicate gel was successfully prepared by hydrothermal method. Such product was characterized by BET and XRD to determine surface area 576.4 m2·g−1, average pore width 2.76 nm, and amorphous surface. The adsorption behaviors of Basic Brown and Chrysophenine on magnesium silicate gel were investigated through changing initial concentration, adsorbent dosage, solution pH, contact time, and temperature. The experimental data was analyzed by the adsorption isotherms and kinetics. The results showed the adsorption progress was fast for Basic Brown, and th

APA, Harvard, Vancouver, ISO, and other styles

43

Nguyen, Tan Tai. "Removal of Lead Ions from Aqueous Solution using Zirconium Dioxide Nanoparticles." Asian Journal of Chemistry 35, no. 7 (2023): 1756–62. http://dx.doi.org/10.14233/ajchem.2023.28040.

Full text

Abstract:

This study demonstrated the feasibility of using zirconium dioxide nanoparticles (ZrO2 NPs) synthesixed using a hydrothermal technique for the removal of lead in aqueous solution. The physico-chemical characterization illustrated that the synthesized ZrO2 NPs have a non-uniform shape with an average size of 15 nm, surface area of 41.56 m2 g-1 and adsorption pore width of 3.06 nm. These findings revealed the potential use of ZrO2 NPs for chelating lead ions. The maximum lead adsorption capacity of ZrO2 NPs was obtained around 4.12 mg g-1 at adsorption conditions i.e., stirring speed of 200 rpm

APA, Harvard, Vancouver, ISO, and other styles

44

SADULLAHOGLU, Gulten. "Optimization of Properties of Iron Oxide Nanoparticles Synthized by SolGel Method." Eurasia Proceedings of Science Technology Engineering and Mathematics 28 (August 15, 2024): 565–74. http://dx.doi.org/10.55549/epstem.1535082.

Full text

Abstract:

In this study, the effects of pH value and capping agent on the morphology, pore structure and size of iron oxide nanoparticles were investigated systematically to obtain optimum properties. Iron oxide nanoparticles were synthized by sol-gel method. Polyvinyl alcohol (PVA) was used as capping agent by adding to the solution at 70 °C. After the drying process the powders were heat treated at 250 °C for 2 h under air atmosphere. Particle size of each sample was determined by using ZetaSizer instrument. X-ray diffraction (XRD) technique was employed for structural properties of iron oxide nanopar

APA, Harvard, Vancouver, ISO, and other styles

45

Wang, Rui, Guoqing Li, and Shanshan Liu. "Experimental Investigation of the Matrix Pore Size Distribution and Inner Surface Fractal Dimension of Different-Structure High Rank Coals." Journal of Nanoscience and Nanotechnology 21, no. 1 (2021): 529–37. http://dx.doi.org/10.1166/jnn.2021.18516.

Full text

Abstract:

To investigate the nanopore characteristics of different-structure high-rank coal matrices, four samples were collected from the Zhaozhuang Mine, a typical mine highly prone to coal and gas outbursts in Shanxi Province, China, and the nanopore size distribution was measured using a lowtemperature nitrogen adsorption method for these four samples. Based on the nitrogen adsorption isotherms, the inner surface fractal dimensions of micropores, meso- and macropores, and full-scale matrix pores were estimated using a Frenkel–Halsey–Hill (FFH) fractal model, and the relationships between the fractal

APA, Harvard, Vancouver, ISO, and other styles

46

Tang, Yu Chao, Xian Huai Huang, Li Hua Tang, et al. "Adsorption of Arsenite(III) and Arsenate(V) from Drinking Water Using Amorphous and Anatase Titanium Dioxide as the Adsorbent." Applied Mechanics and Materials 71-78 (July 2011): 447–50. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.447.

Full text

Abstract:

Arsenite(III) and arsenate(V) removal from low-arsenic concentration drinking water by amorphous and anatase TiO2 adsorbents were studied in this paper. X-ray diffraction (XRD) and BET surface area analysis were used to characterize the physical and chemical properties of the adsorbents. Pore size calculated from adsorption average pore width (4V/A by BET) is 3.92 nm of amorphous TiO2 and 11.0 nm of anatase TiO2. The BET surface specific area of amorphous TiO2 was found to be 205 m2/g and anatase TiO2 was 115.6 m2/g, respectively. Amorphous TiO2 shows more efficiency than anatase TiO2 for As(I

APA, Harvard, Vancouver, ISO, and other styles

47

Wawrzeńczyk, Jerzy, and Henryk Kowalczyk. "Estimation of the Spacing Factor Based on Air Pore Distribution Parameters in Air-Entrained Concrete." Materials 18, no. 8 (2025): 1716. https://doi.org/10.3390/ma18081716.

Full text

Abstract:

Air-void characteristics are defined in the EN-480-11 test method. The primary criticism of Powers’ model comes from the fact that the spacing factor is calculated with the average chord length, without taking into account the chord length distribution. The aim of this study is to determine whether an analysis of the chord length distribution can provide a more accurate estimate of the spacing factor. A data set containing 110 air-entrained concretes with various characteristics was analyzed. The artificial neural network method was applied to develop a model that determines the relationship b

APA, Harvard, Vancouver, ISO, and other styles

48

Xu, Hang, Tianlong Yu, and Yi Liu. "Characteristics and Performance of Nanozinc Oxide/Mesoporous Silica Gel Photocatalytic Composite Prepared by a Sol-Gel Method." Journal of Nanomaterials 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/154865.

Full text

Abstract:

Nano-ZnO loaded mesoporous SiO2was prepared by sol-gel technology as a photocatalytic composite. XRD, SEM, TEM, EDX, and N2sorption isotherms were used to characterize the nano-ZnO/mesoporous SiO2. Acid Red 18 was used as simulated pollutant to determine the photocatalytic performance of nano-ZnO/mesoporous SiO2under ultraviolet light and solar light. The results showed that 6.4 nm ZnO was obtained and immobilized on mesoporous SiO2. Compared to the mesoporous SiO2, the surface area and average pore width of nano-ZnO/mesoporous SiO2were reduced by 12 m2/g and 0.7 nm, respectively. 50% ZnO cont

APA, Harvard, Vancouver, ISO, and other styles

49

Lahchich, Ayoub, Pedro Álvarez-Lloret, Javier F. Reynes, and Celia Marcos. "Relationships Between Physicochemical and Structural Properties of Commercial Vermiculites." Materials 18, no. 4 (2025): 831. https://doi.org/10.3390/ma18040831.

Full text

Abstract:

This study examines the effects of thermal (1000 °C), hydrothermal (100 °C), mechanochemical (ambient T), and microwave (~100 °C) treatments on three types of Chinese vermiculites, one with lower potassium content than the others. The goal was to obtain materials with enhanced properties related to specific surface areas. The response of the vermiculites to treatments and their physicochemical properties were analyzed using X-ray diffraction (XRD), thermal analysis (TG and DTG), and textural characterization via the BET method. XRD analyses showed similar mineral composition in treated and unt

APA, Harvard, Vancouver, ISO, and other styles

50

Hrubiak, A. B., O. Yu Khyzhun, B. K. Ostafiychuk, et al. "Nanostructured mesoporous g-Fe2O3: a novel photocatalyst for degradation of organic pollutants." Physics and Chemistry of Solid State 22, no. 1 (2021): 101–9. http://dx.doi.org/10.15330/pcss.22.1.101-109.

Full text

Abstract:

The modified sol-gel synthesis technique was used to created of nanostructured maghemite (γ-Fe2O3). It has been shown that the molar concentration of the original precursors during synthesis affects on the average particle sizes, specific surface area, pore size distributions, optical and conductivity properties. The XPS metod allowed to establish features of electronic structure of the synthesized materials. Optimal conditions for the synthesis of nanostructured maghemite with mesoporous structure were selected. The mechanism of electrical conductivity formation for synthesized mesoporous mat

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!