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Articles 1 - 30 of 979
Full-Text Articles in Engineering
An Innovative Nh2-Uio-66/Nh2-Mil-125 Mof-On-Mof Structure To Improve The Performance And Antifouling Properties Of Ultrafiltration Membranes, Javad Farahbakhsh, Mitra Golgoli, Mohadeseh Najafi, Seyedeh Zahra Haeri, Mehdi Khiadani, Amir Razmjou, Zargar
An Innovative Nh2-Uio-66/Nh2-Mil-125 Mof-On-Mof Structure To Improve The Performance And Antifouling Properties Of Ultrafiltration Membranes, Javad Farahbakhsh, Mitra Golgoli, Mohadeseh Najafi, Seyedeh Zahra Haeri, Mehdi Khiadani, Amir Razmjou, Zargar
Research outputs 2022 to 2026
The careful design of distinctive membrane layers with specific pore structures is a crucial aspect of membrane fabrication. Previous efforts in metal–organic framework (MOF) based membranes have predominantly employed a single MOF material for improving membrane resistance to fouling due to microplastics and proteins. Here, a novel, highly specialised ultrafiltration (UF) membrane is developed through the in-situ growth of NH2-UiO-66 on the NH2-MIL-125 (MOF-on-MOF) crystals to improve membranes’ performance such as pure water flux (PWF), rejection, and antifouling properties. The developed membranes displayed multidimensional pores, leading to a significant enhancement in fouling resistance while achieving remarkable improvements in water flux. …
Beyond The Surface: Understanding Temperature Polarisation In Dcmd Membranes Through Varied Operational Parameters, Hiras Ahamed Hijaz, Masoumeh Zargar, Abdellah Shafieian, Amir Razmjou, Mehdi Khiadani
Beyond The Surface: Understanding Temperature Polarisation In Dcmd Membranes Through Varied Operational Parameters, Hiras Ahamed Hijaz, Masoumeh Zargar, Abdellah Shafieian, Amir Razmjou, Mehdi Khiadani
Research outputs 2022 to 2026
Conventionally, a single Temperature Polarisation Coefficient (TPC) value is calculated to quantify Temperature Polarisation (TP). In this research, the extent of polarisation is investigated by capturing temperature profiles at specific points along a MD membrane using miniature thermocouples, eliminating the need for TPC calculations. The extent of polarisation at a point is affected by two contributory factors, namely the proximity of flow inlets and the difference in vapour pressure across the membrane at that point. Under this direction, this work examined the influence of permeate temperature, feed salinity, and flow direction on the development of the temperature profiles. Our analysis …
A Secure Cross-Domain Authentication Scheme Based On Threshold Signature For Mec, Lei Chen, Chong Guo, Bei Gong, Muhammad Waqas, Lihua Deng, Haowen Qin
A Secure Cross-Domain Authentication Scheme Based On Threshold Signature For Mec, Lei Chen, Chong Guo, Bei Gong, Muhammad Waqas, Lihua Deng, Haowen Qin
Research outputs 2022 to 2026
The widespread adoption of fifth-generation mobile networks has spurred the rapid advancement of mobile edge computing (MEC). By decentralizing computing and storage resources to the network edge, MEC significantly enhances real-time data access services and enables efficient processing of large-scale dynamic data on resource-limited devices. However, MEC faces considerable security challenges, particularly in cross-domain service environments, where every device poses a potential security threat. To address this issue, this paper proposes a secure cross-domain authentication scheme based on a threshold signature tailored to MEC’s multi-subdomain nature. The proposed scheme employs a (t,n) threshold mechanism to bolster system resilience and security, …
Synthesis Of Geopolymer Mortar From Biomass Ashes And Forecasting Its Compressive Strength Behaviour, P. J. Ardhira, Sanjay Kumar Shukla, Dhanya Sathyan
Synthesis Of Geopolymer Mortar From Biomass Ashes And Forecasting Its Compressive Strength Behaviour, P. J. Ardhira, Sanjay Kumar Shukla, Dhanya Sathyan
Research outputs 2022 to 2026
The global warming dilemma raised an exigency toward sustainability in the construction industry and compelled scientists to hunt for alternative binders in construction materials. The, geopolymerization as a spectacular technology has arisen as a looming solution to this dilemma. This work assesses the features of geopolymer mortar developed with both industrial and agricultural wastes at ambient temperature curing. The geopolymer mix proportion was evolved in this study using main precursor material as fly ash, ground granulated blast furnace slag (GGBFS), sugarcane bagasse ash (SCBA) or rice husk ash (RHA). Workability and mechanical properties, including compressive strength, flexural strength, and split …
A Techno-Economic Perspective On Efficient Hybrid Renewable Energy Solutions In Douala, Cameroon’S Grid-Connected Systems, Reagan Jean Jacques Molu, Serge Raoul Dzonde Naoussi, Mohit Bajaj, Patrice Wira, Wulfran Fendzi Mbasso, Barun K. Das, Milkias Berhanu Tuka, Arvind R. Singh
A Techno-Economic Perspective On Efficient Hybrid Renewable Energy Solutions In Douala, Cameroon’S Grid-Connected Systems, Reagan Jean Jacques Molu, Serge Raoul Dzonde Naoussi, Mohit Bajaj, Patrice Wira, Wulfran Fendzi Mbasso, Barun K. Das, Milkias Berhanu Tuka, Arvind R. Singh
Research outputs 2022 to 2026
Cameroon is currently grappling with a significant energy crisis, which is adversely affecting its economy due to cost, reliability, and availability constraints within the power infrastructure. While electrochemical storage presents a potential remedy, its implementation faces hurdles like high costs and technical limitations. Conversely, generator-based systems, although a viable alternative, bring their own set of issues such as noise pollution and demanding maintenance requirements. This paper meticulously assesses a novel hybrid energy system specifically engineered to meet the diverse energy needs of Douala, Cameroon. By employing advanced simulation techniques, especially the Hybrid Optimization Model for Electric Renewable (HOMER) Pro program, …
Identifying Payable Cluster Distributions For Improved Reservoir Characterization: A Robust Unsupervised Ml Strategy For Rock Typing Of Depositional Facies In Heterogeneous Rocks, Umar Ashraf, Aqsa Anees, Hucai Zhang, Muhammad Ali, Hung Vo Thanh, Yujie Yuan
Identifying Payable Cluster Distributions For Improved Reservoir Characterization: A Robust Unsupervised Ml Strategy For Rock Typing Of Depositional Facies In Heterogeneous Rocks, Umar Ashraf, Aqsa Anees, Hucai Zhang, Muhammad Ali, Hung Vo Thanh, Yujie Yuan
Research outputs 2022 to 2026
The oil and gas industry relies on accurately predicting profitable clusters in subsurface formations for geophysical reservoir analysis. It is challenging to predict payable clusters in complicated geological settings like the Lower Indus Basin, Pakistan. In complex, high-dimensional heterogeneous geological settings, traditional statistical methods seldom provide correct results. Therefore, this paper introduces a robust unsupervised AI strategy designed to identify and classify profitable zones using self-organizing maps (SOM) and K-means clustering techniques. Results of SOM and K-means clustering provided the reservoir potentials of six depositional facies types (MBSD, DCSD, MBSMD, SSiCL, SMDFM, MBSh) based on cluster distributions. The depositional facies …
Corrosion Behavior Of Laser Powder Bed Fusion Additive Manufacturing Produced Tini Alloy By Micro-Arc Oxidation, Xin Zhao, Yicheng Liu, Chenfan Jia, Hao Chang, Wei Zhang, Yun Bai, Shujun Li, Lai-Chang Zhang, Wei Yuan
Corrosion Behavior Of Laser Powder Bed Fusion Additive Manufacturing Produced Tini Alloy By Micro-Arc Oxidation, Xin Zhao, Yicheng Liu, Chenfan Jia, Hao Chang, Wei Zhang, Yun Bai, Shujun Li, Lai-Chang Zhang, Wei Yuan
Research outputs 2022 to 2026
To improve the corrosion resistance of TiNi alloy fabricated by laser powder bed fusion (LPBF), a porous oxidation layer was synthesized by micro-arc oxidation in a sodium aluminate and sodium silicate electrolyte. The influences of the applied voltage and the processing time on the morphology of oxidation layer were investigated, and the corrosion behavior of the oxidation layer in artificial saliva was evaluated and compared with that of the as-fabricated LPBF alloy. The results indicate that, as increasing the applied voltage and the processing time, the oxidation layer becomes uniform and integrated. The optimum parameters are with an applied voltage …
Stress-Dependent Mohr–Coulomb Shear Strength Parameters For Intact Rock, Hao Li, Leo Pel, Zhenjiang You, David Smeulders
Stress-Dependent Mohr–Coulomb Shear Strength Parameters For Intact Rock, Hao Li, Leo Pel, Zhenjiang You, David Smeulders
Research outputs 2022 to 2026
Rock strength is imperative for the design and stability analysis of engineering structures. The Mohr–Coulomb (M-C) criterion holds significant prominence in geotechnical engineering. However, the M-C criterion fails to accurately capture the nonlinear strength response and neglects the critical state of rocks, potentially leading to inaccuracies in the design phase of deep engineering projects. This study introduces an innovative stress-dependent friction angle and cohesion (SFC) for the M-C criterion to capture the nonlinear strength responses of intact rocks, spanning from non-critical to critical states (brittle to ductile regions). A novel method for determining these stress-dependent parameters at each corresponding σ3 …
An Overview Of Additively Manufactured Metal Matrix Composites: Preparation, Performance, And Challenge, Liang Yu Chen, Peng Qin, Lina Zhang, Lai Chang Zhang
An Overview Of Additively Manufactured Metal Matrix Composites: Preparation, Performance, And Challenge, Liang Yu Chen, Peng Qin, Lina Zhang, Lai Chang Zhang
Research outputs 2022 to 2026
Highlight Recent progresses in additive manufacturing on metal matrix composites are reviewed. Additive manufacturing technologies for metal matrix composites are summarized. The characteristics of feedstocks and reinforcements are introduced. Mechanical property of additively manufactured metal matrix composites is reviewed. Challenges of additively manufactured metal matrix composites are discussed.
Stability Of Two-Class Armour Berm Breakwaters: An Experimental Study, Mohammed Al-Ogaili, Amir Etemad-Shahidi, Nick Cartwright, Sigurdur Sigurdarson
Stability Of Two-Class Armour Berm Breakwaters: An Experimental Study, Mohammed Al-Ogaili, Amir Etemad-Shahidi, Nick Cartwright, Sigurdur Sigurdarson
Research outputs 2022 to 2026
The recession of a berm breakwater is a key parameter in ensuring its stability, and functionality, to protect coastal areas against wave impacts. Consequently, consideration of the expected recession in structural design is required to ensure the required objectives of the structure. In this study, physical model laboratory experiments were conducted to measure the recession of two-class armour berm breakwaters in response to varying sea state conditions (wave height, wave period, storm duration, and water depth at the structure's toe) and geometrical parameters (berm elevation from still water level, berm width, and rock size). A total of 110 tests were …
Harnessing The Power Of Hollow Zein Nanoparticles For Enhanced Antifouling And Heavy Metal Removal Of Polyethersulfone Membranes, Farzan Esmali, Mohadeseh Najafi Arani, Elsie Betmoushoul, Masoumeh Zargar, Khalil Farhadi, Vahid Javan Kouzegaran, Rahim Molaei, Yaghoub Mansourpanah
Harnessing The Power Of Hollow Zein Nanoparticles For Enhanced Antifouling And Heavy Metal Removal Of Polyethersulfone Membranes, Farzan Esmali, Mohadeseh Najafi Arani, Elsie Betmoushoul, Masoumeh Zargar, Khalil Farhadi, Vahid Javan Kouzegaran, Rahim Molaei, Yaghoub Mansourpanah
Research outputs 2022 to 2026
This study explores the physicochemical characteristics of an innovative mixed matrix membrane made from polyethersulfone (PES) and hollow Zein nanoparticles (HZNs), which are derived from the corn storage protein, Zein. HZNs, with a mean diameter of 40 nm, were applied to address the challenges associated with metal and inorganic nanoparticles, such as their tendency to accumulate unevenly on the membrane surface. The membranes were fabricated by incorporating varying concentrations of HZNs into the PES casting solution through the nonsolvent phase separation method. The addition of HZNs enhanced the hydrophilicity and pure water flux of the membranes. It also modified the …
Sub-Surface Geospatial Intelligence In Carbon Capture, Utilization And Storage: A Machine Learning Approach For Offshore Storage Site Selection, Mehdi Nassabeh, Zhenjiang You, Alireza Keshavarz, Stefan Iglauer
Sub-Surface Geospatial Intelligence In Carbon Capture, Utilization And Storage: A Machine Learning Approach For Offshore Storage Site Selection, Mehdi Nassabeh, Zhenjiang You, Alireza Keshavarz, Stefan Iglauer
Research outputs 2022 to 2026
This study introduces an innovative data-driven and machine-learning framework designed to accurately predict site scores in the site screening study for specific offshore CO2 storage sites. The framework seamlessly integrates diverse sub-surface geospatial data sources with human aided expert-weighted criteria, thereby providing a high-resolution screening tool. Tailored to accommodate varying data accessibility and the significance of criteria, this approach considers both technical and non-technical factors. Its purpose is to facilitate the identification of priority locations for projects associated with Carbon Capture, Utilization, and Storage (CCUS). Through aggregating and analyzing geospatial datasets, the study employs machine learning algorithms and an expert-weighted …
Optimising Grid-Forming Inverters To Prevent Under-Frequency Load Shedding With Minimal Energy Storage, Indoopa Manamperi, Iftekhar Ahmad, Daryoush Habibi, Asma Aziz
Optimising Grid-Forming Inverters To Prevent Under-Frequency Load Shedding With Minimal Energy Storage, Indoopa Manamperi, Iftekhar Ahmad, Daryoush Habibi, Asma Aziz
Research outputs 2022 to 2026
The increasing penetration of distributed photovoltaics decreases the available loads in distribution feeders. This makes the traditional under-frequency load shedding systems ineffective. As an alternative, large-scale energy storage systems (ESS) could be used to provide contingency frequency response. This study investigates the optimum sizing of the ESS to prevent under-frequency load shedding. The optimal size is determined for both droop and virtual synchronous generator control-based inverters, to maintain frequency within operating standards. The control parameters are treated as variables in the optimisation process, allowing the identification of the optimal set of control parameters that minimise the ESS size while preventing …
A Novel Hybrid Enhanced Oil Recovery Technique To Enhance Oil Production From Oil-Wet Carbonate Reservoirs By Combining Electrical Heating With Nanofluid Flooding, Farida Amrouche, Martin J. Blunt, Stefan Iglauer, Farid Aiouache, Michael Short
A Novel Hybrid Enhanced Oil Recovery Technique To Enhance Oil Production From Oil-Wet Carbonate Reservoirs By Combining Electrical Heating With Nanofluid Flooding, Farida Amrouche, Martin J. Blunt, Stefan Iglauer, Farid Aiouache, Michael Short
Research outputs 2022 to 2026
Enhanced Oil Recovery provides a promising technique to maximise fossil fuel recovery from existing resources, and when used in conjunction with Carbon Capture and Storage/Utilisation provides a way to support a transition to alternative cleaner fuels. A hybrid Enhanced Oil Recovery method by a combination of electrical heating and nanofluid flooding was applied to oil-wet carbonate reservoirs and assessed in terms of the oil production, zeta potential, contact angle, pellet compaction, interfacial tension, and pH values. The hybrid technique consisted of a combination of direct current (up to 30 V) and iron oxide (Fe2O3) or magnesium oxide (MgO) nanofluids. Both …
Hydrogen Wettability Of Saudi Arabian Basalt: Implications For H2 Geo-Storage, Muhammad Ali, Nurudeen Yekeen, Mujahid Ali, Amer Alanazi, Muhammad Shahzad Kamal, Alireza Keshavarz, Hussein Hoteit
Hydrogen Wettability Of Saudi Arabian Basalt: Implications For H2 Geo-Storage, Muhammad Ali, Nurudeen Yekeen, Mujahid Ali, Amer Alanazi, Muhammad Shahzad Kamal, Alireza Keshavarz, Hussein Hoteit
Research outputs 2022 to 2026
The large-scale subsurface storage of hydrogen is a crucial element of the hydrogen economy value chain and is an essential process for achieving the successful replacement of carbon-based fuels. The wettability of the rock-H2-brine system, as quantified by contact angle measurement, has been the focus of most recent research due to its impacts on fluid flow, H2 migration and recovery efficiency during underground hydrogen storage (UHS). However, the reported contact angle data sets are quite inconsistent, and there are relatively few literature reports regarding the contact angles of H2/brine on Saudi Arabian basalt (SAB) compared to the contact angle data …
Impact Of 3d Printing Parameters On Static And Fatigue Properties Of Polylactic Acid (Pla) Bone Scaffolds, Hamed Bakhtiari, Alireza Nouri, Majid Tolouei-Rad
Impact Of 3d Printing Parameters On Static And Fatigue Properties Of Polylactic Acid (Pla) Bone Scaffolds, Hamed Bakhtiari, Alireza Nouri, Majid Tolouei-Rad
Research outputs 2022 to 2026
In the present study, polylactic acid (PLA) scaffolds with a 60 % porosity and gyroid pore structure were 3D printed using the extrusion-based method and employing various printing parameters. The specimens were loaded under quasit-static and cyclic conditions and their mechanical behaviour were evaluated. The Taguchi method was utilized to design experiments and investigate the impact of printing parameters on the compressive properties of the scaffolds. Moreover, thermography analysis was used to examine the influence of cyclic heating during fatigue experiments. The results indicated that extrusion width was the sole variable significantly affecting the quasi-static properties of scaffolds. The largest …
Nano-Enhanced Phase Change Materials: Fundamentals And Applications, Zafar Said, A. K. Pandey, Arun Kumar Tiwari, B. Kalidasan, Furqan Jamil, Amrit Kumar Thakur, V. V. Tyagi, Ahmet Sarı, Hafiz Muhammad Ali
Nano-Enhanced Phase Change Materials: Fundamentals And Applications, Zafar Said, A. K. Pandey, Arun Kumar Tiwari, B. Kalidasan, Furqan Jamil, Amrit Kumar Thakur, V. V. Tyagi, Ahmet Sarı, Hafiz Muhammad Ali
Research outputs 2022 to 2026
Phase Change Materials (PCMs) enable thermal energy storage in the form of latent heat during phase transition. PCMs significantly improve the efficiency of solar power systems by storing excess energy, which can be used during peak demand. Likewise, they also contribute to reduced overall energy demand through passive thermal regulation. Nonetheless, thermal energy charging and discharging are restricted due to the low conducting nature of the energy storage medium. Various research investigations are being carried out to improve the thermal characteristics of PCMs through techniques such as a) dispersion of nanoparticles, b) inserting fins, and c) cascading PCMs. Among the …
Design, Fabrication, And Physical Properties Analysis Of Laminated Low-E Coated Glass For Retrofit Window Solutions, Mohammad Nur-E-Alam, Mikhail Vasiliev, Boon Kar Yap, Mohammad Aminul Islam, Yaseer Fouad, Tiong Sieh Kiong
Design, Fabrication, And Physical Properties Analysis Of Laminated Low-E Coated Glass For Retrofit Window Solutions, Mohammad Nur-E-Alam, Mikhail Vasiliev, Boon Kar Yap, Mohammad Aminul Islam, Yaseer Fouad, Tiong Sieh Kiong
Research outputs 2022 to 2026
The ever-growing demand for improved energy efficiency in buildings has stimulated a stream of research focused on innovative retrofit energy solutions. Laminated low emissivity (Low-E) type coated glass components can be used in retrofitting window systems for enhancing energy savings provided by the insulating properties of glass laminates containing these heat-mirror-type coatings. In particular, custom-designed double-silver low-E coatings embedded into the laminate structure (directly facing the polymer interlayers during and after the lamination) are of interest due to being protected from environmental exposure, enabling easy component transportation, storage, and window retrofits. In this study, we provide some details on the …
Nanofluid-Assisted Enhanced Sealing Security For Efficient Geological Hydrogen Storage In Saudi Arabian Basalt, Muhammad Ali, Nurudeen Yekeen, Sarmad Al-Anssari, Aliakbar Hassanpouryouzband, Alireza Keshavarz, Hussein Hoteit
Nanofluid-Assisted Enhanced Sealing Security For Efficient Geological Hydrogen Storage In Saudi Arabian Basalt, Muhammad Ali, Nurudeen Yekeen, Sarmad Al-Anssari, Aliakbar Hassanpouryouzband, Alireza Keshavarz, Hussein Hoteit
Research outputs 2022 to 2026
The modification of hydrophobic rock surfaces to the water-wet state via nanofluid treatment has shown promise in enhancing their geological storage capabilities and the efficiency of carbon dioxide (CO2) and hydrogen (H2) containment. Despite this, the specific influence of silica (SiO2) nanoparticles on the interactions between H2, brine, and rock within basaltic formations remains underexplored. The present study focuses on the effect of SiO2 nanoparticles on the wettability of Saudi Arabian basalt (SAB) under downhole conditions (323 K and pressures ranging from 1 to 20 MPa) by using the tilted plate technique to measure the contact angles between H2/brine and …
Sub-Rapid Solidification Microstructure Characteristics And Control Mechanisms Of Twin-Roll Cast Aluminum Alloys: A Review, Xian Wu, Zhi Ping Guan, Hong Yu Yang, Bai Xin Dong, Lai Chang Zhang, Jia Meng, Chang Jie Luo, Cheng Gang Wang, Kuang Cao, Jian Qiao, Shi Li Shu, Jie Kang, Ming Zhu, Feng Qiu, Qi Chuan Jiang
Sub-Rapid Solidification Microstructure Characteristics And Control Mechanisms Of Twin-Roll Cast Aluminum Alloys: A Review, Xian Wu, Zhi Ping Guan, Hong Yu Yang, Bai Xin Dong, Lai Chang Zhang, Jia Meng, Chang Jie Luo, Cheng Gang Wang, Kuang Cao, Jian Qiao, Shi Li Shu, Jie Kang, Ming Zhu, Feng Qiu, Qi Chuan Jiang
Research outputs 2022 to 2026
Rapid growth in industrial sectors such as automotive and shipbuilding has highlighted the significance of strip casting technology to produce lightweight alloys, particularly aluminum alloys widely used in both industrial production and daily life. Twin-roll casting (TRC), as an economically and environmentally friendly method for slab/strip production and processing, has attracted significant interest from researchers. However, the development of TRC aluminum alloys faces many challenges due to limited understanding of microstructural characteristics and control mechanisms. To further enhance comprehension of TRC aluminum alloys, this article reviews the influencing parameters, control methods, and existing issues related to TRC sub-rapid solidification (SRS) …
The Reversal Of Carbonate Wettability Via Alumina Nanofluids: Implications For Hydrogen Geological Storage, Amer Alanazi, Mujahid Ali, Muhammad Ali, Alireza Keshavarz, Stefan Iglauer, Hussein Hoteit
The Reversal Of Carbonate Wettability Via Alumina Nanofluids: Implications For Hydrogen Geological Storage, Amer Alanazi, Mujahid Ali, Muhammad Ali, Alireza Keshavarz, Stefan Iglauer, Hussein Hoteit
Research outputs 2022 to 2026
Underground hydrogen storage (UHS) has been recognized as a key enabler of the industrial-scale implementation of a hydrogen-based economy. However, the efficiency and storage capacity of hydrogen (H2) in carbonate aquifers can be influenced by the presence of organic acids. Nevertheless, the existing literature contains few investigations of H2/calcite/brine wettability and the influence of organic acids on H2 storability in carbonate reservoirs. Therefore, the present study examines the influence of stearic acid on the dynamic H2/brine wettability of calcite substrates (as a proxy of carbonate formation) under various geological conditions (0.1–20 MPa at 323 K), equilibrated in 10 wt% NaCl …
Load-Bearing Behaviour Of Anchors In Fibre-Reinforced Concrete – A State Of The Art Review, Ayman Mansour, Alireza Mohyeddin, Jessey Lee
Load-Bearing Behaviour Of Anchors In Fibre-Reinforced Concrete – A State Of The Art Review, Ayman Mansour, Alireza Mohyeddin, Jessey Lee
Research outputs 2022 to 2026
Contemporary construction heavily relies on advanced techniques for connecting and assembling structures. The most common example of construction assemblies is connecting structural and non-structural elements to a concrete substrate, often using cast-in and post-installed anchors. The widespread adoption of advanced concrete materials with high compressive strengths, such as Steel Fibre Reinforced Concrete (SFRC), in practical applications have led to challenges. Most of these stem from the absence of established standards and limited understanding of their impact on other structural elements, such as anchorage systems embedded in these types of substrates. This is because existing guidelines for anchorage design primarily rely …
Evaluation Of Mechanical Vapor Recompression And Easy Multi-Effect Desalination Systems In Different Climate Conditions-Sensitivity And 7e Analysis, Hamed Kariman, Mehdi Khiadani, Siamak Hoseinzadeh, Shahin Shoeibi, Abdellah Shafieian
Evaluation Of Mechanical Vapor Recompression And Easy Multi-Effect Desalination Systems In Different Climate Conditions-Sensitivity And 7e Analysis, Hamed Kariman, Mehdi Khiadani, Siamak Hoseinzadeh, Shahin Shoeibi, Abdellah Shafieian
Research outputs 2022 to 2026
Evaporative desalination systems, such as Multi-Effect Desalination (MED) and Mechanical Vapor Recompression (MVR), play important roles in addressing this challenge. Although large-scale desalination systems possess limitations in catering to the water demands of remote regions and islands and entail the cost of water transportation to residential areas, it is imperative to concentrate on studying the feasibility of employing centralized evaporative water production systems. Firstly, in this study, the initial focus is on conducting energy and exergy analyses of MVR and Easy MED systems, with a goal of enhancing knowledge about the energy consumption, exergy destruction and exergetic efficiency of these …
Towards Load-Bearing Biomedical Titanium-Based Alloys: From Essential Requirements To Future Developments, Yu-Wei Cui, Liqiang Wang, Lai-Chang Zhang
Towards Load-Bearing Biomedical Titanium-Based Alloys: From Essential Requirements To Future Developments, Yu-Wei Cui, Liqiang Wang, Lai-Chang Zhang
Research outputs 2022 to 2026
The use of biomedical metallic materials in research and clinical applications has been an important focus and a significant area of interest, primarily owing to their role in enhancing human health and extending human lifespan. This article, particularly on titanium-based alloys, explores exceptional properties that can address bone health issues amid the growing challenges posed by an aging population. Although stainless steel, magnesium-based alloys, cobalt-based alloys, and other metallic materials are commonly employed in medical applications, limitations such as toxic elements, high elastic modulus, and rapid degradation rates limit their widespread biomedical applications. Therefore, titanium-based alloys have emerged as top-performing …
Dual Modification Of Reverse Osmosis Membranes With Nh2-Mil-125 And Functionalised Multiwalled Carbon Nanotubes For Enhanced Nanoplastic Removal, Javad Farahbakhsh, Mohadeseh Najafi, Mitra Golgoli, Seyedeh Zahra Haeri, Mehdi Khiadani, Amir Razmjou, Masoumeh Zargar
Dual Modification Of Reverse Osmosis Membranes With Nh2-Mil-125 And Functionalised Multiwalled Carbon Nanotubes For Enhanced Nanoplastic Removal, Javad Farahbakhsh, Mohadeseh Najafi, Mitra Golgoli, Seyedeh Zahra Haeri, Mehdi Khiadani, Amir Razmjou, Masoumeh Zargar
Research outputs 2022 to 2026
The present study describes a novel double-modified strategy for developing high-performance thin-film composite reverse osmosis (TFC-RO) membranes by incorporating titanium-based metal organic frameworks (NH2-MIL-125) and functionalised multiwalled carbon nanotubes (MWCNTs) into the support layer and selective layer, respectively. Initially, the support layer was subjected to successive modifications using NH2-MIL-125 mixed with polysulfone (PSF) in dimethylformamide DMF solution to investigate their impact on the performance and properties of the support layer and resultant TFC-RO membranes. Results indicated that the new structure of the modified support layer had significant influences on the developed TFC-RO membranes. Notably, the pristine PSF support exhibited a …
Recent Progress In Microencapsulation Technology And Its Applications In Petroleum Industry, Jingyi Zhu, Jiayu He, Jie Zhou, Zhaozhong Yang, Xiaogang Li, Ying Li, Zhenjiang You
Recent Progress In Microencapsulation Technology And Its Applications In Petroleum Industry, Jingyi Zhu, Jiayu He, Jie Zhou, Zhaozhong Yang, Xiaogang Li, Ying Li, Zhenjiang You
Research outputs 2022 to 2026
Oilfield chemicals play a pivotal role in optimizing the development of oil and gas resources. Emerging technologies for the controlled release of these chemicals have captured considerable interest among petroleum engineers. Microencapsulation, a method widely employed for controlled release in various industries such as biotechnology, pharmaceuticals, and agriculture, is gaining traction in the realm of oil and gas exploitation. This paper provides a comprehensive review of encapsulation technologies, including solvent evaporation, coacervation, and polymerization methods. Special emphasis is placed on recent advancements in the applications of microcapsules within the oil and gas sector. Given the profound impact of release behavior …
Recent Advancements In Applications Of Encapsulated Phase Change Materials For Solar Energy Systems: A State Of The Art Review, Shahin Shoeibi, Furqan Jamil, Seyed Masoud Parsa, Sadaf Mehdi, Hadi Kargarsharifabad, Seyed Ali Agha Mirjalily, Wenshan Guo, Huu Hao Ngo, Bing Jie Ni, Mehdi Khiadani
Recent Advancements In Applications Of Encapsulated Phase Change Materials For Solar Energy Systems: A State Of The Art Review, Shahin Shoeibi, Furqan Jamil, Seyed Masoud Parsa, Sadaf Mehdi, Hadi Kargarsharifabad, Seyed Ali Agha Mirjalily, Wenshan Guo, Huu Hao Ngo, Bing Jie Ni, Mehdi Khiadani
Research outputs 2022 to 2026
In recent decades, solar energy systems have played an increasingly important role in human societies, including support of the supply of drinking water, hot water, and electricity in arid, semi-arid and remote communities. The most challenging aspects of solar energy systems are storing energy when it is available and using it when there is a high demand for energy without access to solar energy. Encapsulating phase change materials (PCMs) or nano enhanced PCMs can serve as thermal batteries for storing solar energy, whereby it is important to consider the energy characteristics of various encapsulation methods. This includes taking into account …
Effect Of Flow Velocity On Clogging Induced By Coal Fines In Saturated Proppant Packs: A Transition From Surface Deposition To Bridging, Fansheng Huang, Fengbin Wang, Shuxun Sang, Shiqi Liu, Zhenjiang You
Effect Of Flow Velocity On Clogging Induced By Coal Fines In Saturated Proppant Packs: A Transition From Surface Deposition To Bridging, Fansheng Huang, Fengbin Wang, Shuxun Sang, Shiqi Liu, Zhenjiang You
Research outputs 2022 to 2026
Hydraulic fracturing is a widely used technique to enhance the production of coalbed methane reservoirs. However, a common issue is the invasion of coal fines into proppant packs, leading to pore clogging and reduced conductivity. This study investigated the impact of flow velocity on clogging by coal fines in saturated proppant packs to optimize the flow velocity and alleviate clogging during dewatering. Clogging experiments induced by coal fines were conducted on saturated proppant packs with varying superficial velocities. Throughout each experiment, the permeability and effluent concentration were monitored, and the process of clogging was visually observed using an optical microscope. …
Rock Structural Changes Monitored By Fibre Bragg Grating Sensors And Nuclear Magnetic Resonance During Static And Dynamic Carbonated Brine Core Flooding Experiments, Bruno Da Silva Falcão, Lionel Esteban, Ausama Giwelli, Ahmed Al-Yaseri, Alireza Keshavarz, Jeremie Dautriat, Stephanie Vialle, Stefan Iglauer
Rock Structural Changes Monitored By Fibre Bragg Grating Sensors And Nuclear Magnetic Resonance During Static And Dynamic Carbonated Brine Core Flooding Experiments, Bruno Da Silva Falcão, Lionel Esteban, Ausama Giwelli, Ahmed Al-Yaseri, Alireza Keshavarz, Jeremie Dautriat, Stephanie Vialle, Stefan Iglauer
Research outputs 2022 to 2026
One proposed solution to reduce greenhouse gas emissions is the capture and storage of carbon dioxide (CCS) in geological formations such as depleted oil and gas reservoirs. Injected carbon dioxide (CO2) forms carbonic acid once dissolved in the formation water, which can lead to dissolution of certain types of rock minerals. This may weaken rock geomechanical properties that can jeopardize the safety of long-term storage. In this work, the use of Fibre Bragg Grating (FBG) sensors associated with Nuclear Magnetic Resonance (NMR) was investigated to measure the change in rock strain during core flooding experiments. Optical fibres were glued onto …
High–Strength Porous Tinbzrtafe Alloys Fabricated By Sintering Of Nanocomposite Powder Precursor With Space Holder Technique, Yuhua Li, Yuxin He, Rong Zhao, Libin Niu, Juxin Qu, Lai Chang Zhang
High–Strength Porous Tinbzrtafe Alloys Fabricated By Sintering Of Nanocomposite Powder Precursor With Space Holder Technique, Yuhua Li, Yuxin He, Rong Zhao, Libin Niu, Juxin Qu, Lai Chang Zhang
Research outputs 2022 to 2026
Although introducing high porosity in biomedical Ti alloys can reduce their elastic modulus and promote new bone ingrowth, relieving the stress–shielding effect and implant failure, this also causes a decline in the alloys’ mechanical strength. In this work, a new preparation method for the high–strength and high–porosity Ti65Nb23.33Zr5Ta1.67Fe5 (TNZTF, at.%) alloy was suggested by sintering nanocomposite powder precursor in combination with the use of a space holder technique, in which NH4HCO3 is adopted to achieve a porous structure. The highly porous TNZTF alloy possesses a homogeneous fine–grained microstructure consisting of equiaxed α–Ti and a small amount of FeTi2, the latter …