Article
Chemistry, Multidisciplinary
Turar Yerkenov, Simin Tazikeh, Afshin Tatar, Ali Shafiei
Summary: Using both machine learning and population balance model (PBM), this research aimed to model the effect of paraffinic solvent injection on asphaltene precipitation during bitumen recovery. The committee machine intelligent system (CMIS) was found to be the superior model with relative accuracy in predicting asphaltene precipitation.
Article
Chemistry, Physical
Li Jiguang, Guo Xin, Shen Haiping, Cai Xinheng, Dong Ming, Hou Huandi
Summary: Different vacuums residues from China and the Middle East were tested for solubility in toluene and heptane mixtures, with structural differences being identified as the main factor influencing solubility variations.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Soil Science
Xiai Zhu, Wenjie Liu, Xia Yuan, Chunfeng Chen, Kai Zhu, Wanjun Zhang, Bin Yang
Summary: Soil erosion by water is a global ecological issue that leads to land degradation. This study focuses on splash erosion caused by raindrop impact and its relation to soil aggregate characteristics in humid tropical regions. The results show that soil aggregate properties such as organic carbon, water-stable aggregate index, and mean weight diameter decrease after land-use change from tropical rainforest to rubber plantation, leading to higher splash erosion rates in the latter.
Article
Energy & Fuels
Jia Meng, Somasekhara Goud Sontti, Mohsen Sadeghi, Gilmar F. Arends, Petr Nikrityuk, Xiaoli Tan, Xuehua Zhang
Summary: This study reveals the significance of asphaltene precipitation in the oil industry and investigates the effects of different solvents and inhibitors on the yield and size distribution of asphaltene particles.
Article
Soil Science
C. Polakowski, A. Sochan, M. Ryzak, M. Beczek, R. Mazur, K. Majewska, M. Turski, A. Bieganowski
Summary: The aggregate size distribution of soil is a key parameter in describing soil properties. The traditional dry sieving method may lead to breakdown of less-stable aggregates. This paper presents a modified measurement system using laser diffraction for direct measurement of aggregates on a dry basis, with an average coefficient of variation of about 2.6%.
SOIL & TILLAGE RESEARCH
(2021)
Article
Engineering, Environmental
Meiniu Yang, Xia Tian, Zhongling Guo, Chunping Chang, Jifeng Li, Zixiao Guo, Huiru Li, Ruijuan Liu, Rende Wang, Qing Li, Xueyong Zou
Summary: This study investigates the distribution of microplastics (MPs) in different dry soil aggregate fractions and the implications for MP emissions induced by wind erosion. The results show that only a small percentage of MPs are associated with soil aggregates, and their abundance decreases with an increase in aggregate size. The enrichment of microfibers associated with soil aggregates is positively correlated with the organic matter and nitrogen contents in soil. Additionally, the stability of aggregates and wind speed have opposite effects on microfiber enrichment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2022)
Article
Agronomy
Krzysztof Papuga, Jaroslaw Kaszubkiewicz, Dorota Kawalko, Maria Kreimeyer
Summary: The dynamometer method is used to determine particle size distribution and can be applied in soil sample research. This study investigates the effect of removing organic matter using hydrogen peroxide on particle size distribution results and identifies differences in soil samples after organic matter removal.
Article
Engineering, Civil
Wasim S. Barham, Yasmeen Taleb Obaidat, Ahmad Wael Qublan
Summary: Reinforced concrete is commonly used but may need strengthening or repairing due to various factors. The use of composite materials for this purpose has become popular. The properties of aggregates also have significant effects on the behavior of concrete. However, research on the effect of maximum aggregate size on the shear behavior of reinforced concrete beams is limited.
Article
Biology
Siul A. Ruiz, Samuel Bickel, Dani Or
Summary: Earthworm activity is constrained by soil hydromechanical conditions, and their seasonal dynamics and soil hydromechanical statuses vary across latitudes. A mechanistic model is developed to predict global distribution of earthworm habitats and seasonal activity windows based on soil moisture, texture, and climate interactions.
COMMUNICATIONS BIOLOGY
(2021)
Article
Soil Science
Evelin Pihlap, Markus Steffens, Ingrid Koegel-Knabner
Summary: This study aims to elucidate the initial aggregate formation in calcareous loess, showing that organic matter induces the formation of large macroaggregates, while microaggregates do not accumulate soil organic carbon. The findings suggest that soil aggregate formation on young calcareous soils involves both fresh soil organic matter contributing to macroaggregate formation and intrinsic cementation of loess through carbonates affecting microaggregate stability.
Article
Construction & Building Technology
A. Deifalla
Summary: The study presents a review of concrete elements tested under one-way shear, focusing on the effects of tension forces. It compares findings with current design codes and examines the accuracy of strength calculations. The study also highlights the importance of design codes based on sound models for accurate shear design.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Geosciences, Multidisciplinary
Anjun Li, Shiji Wang, Junjia Cao, Xian Li, Zhenjiang Guo, Xun Yang
Summary: Desiccation cracking is a common phenomenon in purple soil subjected to rainfall-evaporation cycles, which affects the hydraulic and mechanical properties of the soil. The variability in aggregate size distribution leads to variations in crack morphology. In this study, the effects of aggregate size distribution on crack morphology were investigated, and regression analysis based on purple soil indices was conducted. The results showed that crack evolution in purple soil involves three stages, two intersection shapes, and three network forms. A cracking evolution function was proposed, and its fit for modeling the dynamic morphological characteristics of desiccation cracks was verified. The distribution of crack length, crack area, and clod area were well described, while crack width followed a bimodal Gaussian distribution. Multiple linear regression models between crack parameters and aggregate size distribution indices were established, indicating the significant effect of micro-aggregate state on crack morphology.
Article
Chemistry, Multidisciplinary
He Zhang, Yong Liu, Peihui Han, Shuoshi Wang, Huarong Yan, Ping Guo, Jiang Zhang, Zhenqiang Bai, Zhouhua Wang, Haoxiang Hukuang, Xuyang Li
Summary: A unique experiment design is proposed to study the asphaltene precipitation during gas injection, quantifying the precipitation at different methane contact steps. The formation damage caused by asphaltene precipitation is investigated through core flooding tests for three different permeability cases.
Article
Chemistry, Physical
Qiuwei Yang, Xi Peng, Yun Sun
Summary: The study investigated the computation method and size effect on shear capacity of recycled concrete beams without stirrups. Four recycled aggregate concrete beams with different sizes were tested to obtain their ultimate shear capacities. The mechanical parameters of cracking load, ultimate shear capacity, and shear strength for these beam specimens were studied.
Article
Environmental Sciences
Steffen A. Schweizer, Markus Graf-Rosenfellner, Nisar A. Bhat, Gilles Kayser, Bhupendra S. Sisodia, Gunnar Kirchhof, Sabine Zikeli, Georg Cadisch, Gurbir S. Bhullar
Summary: Organic matter management plays an important role in improving soil structural properties, particularly for agricultural soils in tropical regions with high rainfall intensities. Organic farming is believed to increase organic carbon and enhance stability and permeability of the soil. However, the accumulation of organic carbon depends on soil type and environmental factors. This study compared the impact of organic farming and conventional practices on soil structural properties and found that higher application of organic amendments did not lead to significant increases in soil organic carbon. Changes in aggregate size distribution and lower water intake in the organic systems might be attributed to pH and exchangeable sodium levels. Chemical properties may dominate soil aggregation and limit the integration of organic amendments for sustainable agricultural intensification in tropical, semiarid climates.
LAND DEGRADATION & DEVELOPMENT
(2022)
Article
Environmental Sciences
K. Nasr Esfahani, M. Farhadian, A. R. Solaimany Nazar
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2019)
Article
Energy & Fuels
Hamideh Radnia, Ali Reza Solaimany Nazar, Alimorad Rashidi
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2019)
Article
Environmental Sciences
Nila Davari, Mehrdad Farhadian, Ali Reza Solaimany Nazar
Summary: In this study, a ZnO/Fe2O3/clinopticlite photocatalyst was synthesized via sol-gel method with a high surface area and pore volume, and a band gap energy of 3.38 eV. The optimal conditions for degrading 99% metronidazole using this photocatalyst were determined through response surface methodology.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Polymer Science
Hamideh Radnia, Alimorad Rashidi, Ali Reza Solaimany Nazar
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2020)
Article
Thermodynamics
Yavar Karimi, Ali Reza Solaimany Nazar, Mohsen Motevasel
Summary: The study evaluates the effect of nanoparticles aggregation on heat transfer coefficient in a circular tube using computational fluid dynamics (CFD) and compares simulation results to experimental data. The consideration of aggregation effect with accurate particle size distribution data enhances the accuracy of the CFD simulation, leading to more reliable outcomes.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Physical
Maryam Aram, Mehrdad Farhadian, Ali Reza Solaimany Nazar, Shaharam Tangestaninejad, Parisa Eskandari, Byong-Hun Jeon
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Article
Chemistry, Multidisciplinary
Fazlollah Heshmatnezhad, Ali Reza Solaimany Nazar
JOURNAL OF FLOW CHEMISTRY
(2020)
Article
Engineering, Chemical
Fazlollah Heshmatnezhad, Ali Reza Solaimany Nazar
CHEMICAL ENGINEERING & TECHNOLOGY
(2020)
Article
Environmental Sciences
P. Eskandari, M. Farhadian, A. R. Solaimany Nazar, A. Goshadrou
Summary: The study demonstrated that modifying activated carbon with nanocrystalline metal oxides can enhance adsorption capacity and removal efficiency. The Langmuir model was found to be the most suitable isotherm model, while kinetic modeling showed that cyanide adsorption followed a pseudo second-order mechanism.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Halimeh Aghaei, Ali Reza Solaimany Nazar, Jaleh Varshosaz
Summary: This study presents a novel and simple method to produce MTX loaded liposomal particles using the double-MHFF device, optimizing the physicochemical characteristics by adjusting operational and formulation parameters. The double-MHFF device allows for high encapsulation efficiency and sustained release of MTX.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Environmental Sciences
N. Mahmoudi, M. Farhadian, A. R. Solaimany Nazar, P. Eskandari, K. N. Esfahani
Summary: This study investigated the decolorization of two widely used textile dyes using a combined sono-photo-electro-Fenton process, revealing varying efficiency and optimal conditions depending on the dye type.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Electrochemistry
Shadi Aflaki, Mehrdad Farhadian, Ali Reza Solaimany Nazar, Shaharam Tangestaninejad, Nila Davari
Summary: This study aimed to degrade two commonly used dyes in textile industries, Acid Black 172 and Reactive Blue 19, under visible-light irradiation using Photoelectro-Fenton-like and Photoelectro-Fenton-like/Photocatalyst processes. Results showed that employing immobilized photocatalyst under optimal conditions led to higher dye degradation efficiency.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2021)
Article
Energy & Fuels
Hassan Rahimi, Amirhossein Ghafelebash, Kayghobad Shams, Mohammad Chalkesh Amiri
Summary: In this study, chloride removal from rich MEG solution was achieved through the chemical precipitation of insoluble Friedel's salt. Response surface methodology was used to optimize independent variables, showing that the reaction for forming Friedel's salt is most effective at higher starting Cl concentrations. Multi-stage Cl removal efficiency was investigated, concluding that a 97% chloride removal can be achieved by the end of stage 3 with 70% removal efficiency at each step.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Chemical
Shayan Mirzaee Rasekh, Yavar Karimi, Farnoosh Miramirkhani, Ali Reza Solaimany Nazar
Summary: Computational fluid dynamics and design of experiments were used to model heat transfer of an Al2O3/water-ethylene glycol nanofluid as a coolant in a car radiator system. The study aimed to predict the Nusselt number using a model proposed through computer experiment design. By analyzing the effects of flow rate, nanoparticle concentration, water/EG ratio, and inlet temperature on Nu, a correlation was obtained to predict Nu with an accuracy of +/- 20% after eliminating insignificant terms and simplifying the model through Box-Cox transformation.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Fayazeh Rabanimehr, Mehrdad Farhadian, Ali Reza Solaimany Nazar, Majid Moghadam
Summary: A Z-scheme Bi2WO6/CNT/TiO2 heterostructure was synthesized and showed enhanced photocatalytic activity in degrading cephalexin. By optimizing loading amount and operating parameters, the performance of the photocatalyst was improved.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
