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Articles 991 - 1020 of 16385

Full-Text Articles in Materials Science and Engineering

Effect Of Sorbitol Plasticizer On Bioplastics Properties Based On Oil Palm Empty Fruit Bunches (Opefb) And Jackfruit Seed Starch, Nia Sasria, Vita Nur Afifah, Gusti Umindya Nur Tajalla Jun 2025

Effect Of Sorbitol Plasticizer On Bioplastics Properties Based On Oil Palm Empty Fruit Bunches (Opefb) And Jackfruit Seed Starch, Nia Sasria, Vita Nur Afifah, Gusti Umindya Nur Tajalla

Makara Journal of Science

In bioplastics, natural materials that are easily decomposed are used to minimize plastic waste. In this research, the compositions used were cellulose from oil palm empty fruit bunches (OPEFB), jackfruit seed starch, and carboxymethyl cellulose (CMC) as a filler with sorbitol as a plasticizer. This study aimed to analyze the effect of a sorbitol plasticizer on bioplastic properties. The study began by extracting jackfruit seed starch and OPEFB cellulose. Subsequently, bioplastics were prepared by varying sorbitol, namely 0 (S – 0), 0.5 mL (S – 0.5), 1 mL (S – 1), and 1.5 ml (S – 1.5), with CMC 20%. …


Magnetic Nanoparticles: Synthesis And Applications In Life Sciences, Kishore Chand, Erick Salvador Vasquez Jun 2025

Magnetic Nanoparticles: Synthesis And Applications In Life Sciences, Kishore Chand, Erick Salvador Vasquez

Chemical and Materials Engineering Faculty Publications

Magnetic nanoparticles (MNPs) are multifunctional materials with superparamagnetic properties and tunable surface chemistries, making them valuable across diverse fields, such as biomedicine, environmental remediation, and agriculture. This review examines recent advancements in MNP synthesis, encompassing chemical, physical, and environmentally friendly methods while highlighting improvements in size, morphology, and composition control that enhance application-specific performance and environmental sustainability. The review discusses various architectures, including single-core, core–shell, hybrid composites, and stimuli–responsive systems, with an emphasis on their stability, scalability, and functionalization potential. In biomedical applications, MNPs show promise in targeted drug delivery, magnetic hyperthermia, and magnetic resonance imaging contrast enhancement, where biocompatibility, …


Vacuum Consistent Electrochemistry In Ionic Liquid Combined With Oxide Epitaxy, Yuji Matsumoto Jun 2025

Vacuum Consistent Electrochemistry In Ionic Liquid Combined With Oxide Epitaxy, Yuji Matsumoto

Journal of Electrochemistry

We introduce our state-of-the art of “vacuum consistent electrochemistry” to an investigation of the interfaces between oxides and ionic liquid (IL). Pulsed laser deposition (PLD) has been one of the powerful and sophisticated techniques to realize nanoscale preparation of high-quality epitaxial oxide thin films. On the other hand, electrochemistry is a simple, very sensitive, and non-destructive analysis technique for solid-liquid interfaces. To ensure the reproducibility in experiment of the interfaces of such epitaxial oxide films, as well as bulk oxide single-crystals, with IL, we employ a home-built PLD-electrochemical (EC) system with IL as an electrolyte. The system allows one to …


Pm Irras Studies Of Organized Molecular Films At A Gold Electrode Surface, Zhang-Fei Su, Ai-Cheng Chen, Jacek Lipkowski Jun 2025

Pm Irras Studies Of Organized Molecular Films At A Gold Electrode Surface, Zhang-Fei Su, Ai-Cheng Chen, Jacek Lipkowski

Journal of Electrochemistry

This feature article illustrates the potential of polarization modulation infrared reflection absorption spectroscopy (PM IRRAS) to provide molecular-level information about the structure, orientation and conformation of constituents of thin films at electrode surfaces. PM IRRAS relies on the surface selection rules stating that the p-polarized IR beam is enhanced, while the s-polarized beam is attenuated at the metal surface. The difference between p- and s-polarized beams eliminates the background of the solvent and provides IR spectra at a single electrode potential. In contrast, two other popular in situ IR spectroscopic techniques, namely, subtractively normalized interfacial Fourier transform infrared spectroscopy (SNIFTIRS) …


Redox-Active Monolayers On Ito Prepared By Post-Amidation And Direct Esterification And Their Spectroelectrochemical Characterization, Takamasa Sagara, Sae Nakai, Ryusuke Yofu, Shota Kojin Jun 2025

Redox-Active Monolayers On Ito Prepared By Post-Amidation And Direct Esterification And Their Spectroelectrochemical Characterization, Takamasa Sagara, Sae Nakai, Ryusuke Yofu, Shota Kojin

Journal of Electrochemistry

A redox-active monolayer on an optically transparent electrode constitutes a typical platform for spectroelectrochemical sensing. The necessity for its sophistication arises from the availability of multi-dimensional sensing signals. Simultaneous monitoring of the redox current and color change synchronized with the oxidation state change significantly enhances sensitivity and selectivity. This study aimed to elucidate the modification of an indium tin oxide (ITO) electrode with a viologen monolayer with an ordered orientation. Novel methods were developed to immobilize a viologen molecule bearing a carboxyl group to form assembled monolayers through a condensation reaction using 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide with N-hydroxy-succinimide (EDC/NHS). In the two methods …


Ambient Co2 Capture And Valorization Enabled By Tandem Electrolysis Using Solid-State Electrolyte Reactor, Yan-Bo Hua, Bao-Xin Ni, Kun Jiang Jun 2025

Ambient Co2 Capture And Valorization Enabled By Tandem Electrolysis Using Solid-State Electrolyte Reactor, Yan-Bo Hua, Bao-Xin Ni, Kun Jiang

Journal of Electrochemistry

Electrocatalytic carbon dioxide reduction is a promising technology for addressing global energy and environmental crises. However, its practical application faces two critical challenges: the complex and energy-intensive process of separating mixed reduction products and the economic viability of the carbon sources (reactants) used. To tackle these challenges simultaneously, solid-state electrolyte (SSE) reactors are emerging as a promising solution. In this review, we focus on the feasibility of applying SSE for tandem electrochemical CO2 capture and conversion. The configurations and fundamental principles of SSE reactors are first discussed, followed by an introduction to its applications in these two specific areas, …


Keynote: Research And Innovation At Logistics 4.0 Lab At Ntnu, Fabio Sgarbossa Jun 2025

Keynote: Research And Innovation At Logistics 4.0 Lab At Ntnu, Fabio Sgarbossa

International Material Handling Research Colloquium

No abstract provided.


Keynote: The World's First Autonomous Wheel, Transforms Any Object Into A Mobile Robot, Rossano Luhulima Jun 2025

Keynote: The World's First Autonomous Wheel, Transforms Any Object Into A Mobile Robot, Rossano Luhulima

International Material Handling Research Colloquium

No abstract provided.


Dynamic Management Of Order Picking In Dark Stores And Urban Warehouses, Melih Celik, Arsham Atashi Khoei, Vaggelis Giannikas, Niccolo Corsini Jun 2025

Dynamic Management Of Order Picking In Dark Stores And Urban Warehouses, Melih Celik, Arsham Atashi Khoei, Vaggelis Giannikas, Niccolo Corsini

International Material Handling Research Colloquium

No abstract provided.


The New Reality For The Material Handling Industry, Sunderesh S. Heragu Jun 2025

The New Reality For The Material Handling Industry, Sunderesh S. Heragu

International Material Handling Research Colloquium

No abstract provided.


Development Of Mechanical Transfer Station For Automated Transport Robots, Stefan Galka Jun 2025

Development Of Mechanical Transfer Station For Automated Transport Robots, Stefan Galka

International Material Handling Research Colloquium

No abstract provided.


Logistical Automation In Hospitals In The Dach Region And Approaches To Increasing Process Efficiency Through Automation, Emily C. Spicker, Sabrina Forster, Sonja Stabenow, Sidra Rashid, Johannes Fottner, Dirk Wilhelm Jun 2025

Logistical Automation In Hospitals In The Dach Region And Approaches To Increasing Process Efficiency Through Automation, Emily C. Spicker, Sabrina Forster, Sonja Stabenow, Sidra Rashid, Johannes Fottner, Dirk Wilhelm

International Material Handling Research Colloquium

No abstract provided.


Store-By-Voice: A Voice-Controlled Putaway And Stocktaking System, Thorsten Schmidt, Heiner Ludwig, Mathias Kühn Jun 2025

Store-By-Voice: A Voice-Controlled Putaway And Stocktaking System, Thorsten Schmidt, Heiner Ludwig, Mathias Kühn

International Material Handling Research Colloquium

No abstract provided.


Warehouse Dispatching With Conflict Avoidance: A Deep Reinforcement Learning Approach, Maojia P. Li, Michael E. Kuhl Jun 2025

Warehouse Dispatching With Conflict Avoidance: A Deep Reinforcement Learning Approach, Maojia P. Li, Michael E. Kuhl

International Material Handling Research Colloquium

No abstract provided.


Daily Shipment Planning Using Generative Ai: A Customized Gpt-Driven Approach, Banu Yetkin Ekren Jun 2025

Daily Shipment Planning Using Generative Ai: A Customized Gpt-Driven Approach, Banu Yetkin Ekren

International Material Handling Research Colloquium

No abstract provided.


Synthesis And Radical Polymerization Of N,N-Diallyl Phthalimide, Oytura S. Maksumova, Feruza A. Pulatova, Dilnozakhon I. Tursunova, Feruza A. Makhmudova Jun 2025

Synthesis And Radical Polymerization Of N,N-Diallyl Phthalimide, Oytura S. Maksumova, Feruza A. Pulatova, Dilnozakhon I. Tursunova, Feruza A. Makhmudova

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of this work is the synthesis of iodine N,N-diallylphthalimide and the study of its radical polymerization. In this regard, the synthesis of iodine N,N-diallylphthalimide was carried out in two stages: at the first stage, phthalic anhydride reacts with allylamine and forms allyl phthalimide, at the second stage, allyl phthalimide reacts with allyl iodide to form iodine N, N-diallyl phthalimide. Radical polymerization of the synthesized quaternary salt of N, N-diallyl phthalimide was studied in the presence of the initiator dinitrile azobisisobutyric acid at relatively low temperatures. Kinetic features of the polymerization reaction of iodine N, N-diallyl phthalimide were considered. …


Technology For Improving The Quality Of Graphite Enrichment By Chemical Treatment, Baxtiyor S. Sadullayev, Abror S. S. Usmonov Jun 2025

Technology For Improving The Quality Of Graphite Enrichment By Chemical Treatment, Baxtiyor S. Sadullayev, Abror S. S. Usmonov

CHEMISTRY AND CHEMICAL ENGINEERING

No abstract provided.


On The Possibility Of Using Qiziltepa Bentonite In Drilling, Farrukh B. Erkinov, Biloliddin B. Qobilov, Mukhammadamin Sh. Jololdinov Jun 2025

On The Possibility Of Using Qiziltepa Bentonite In Drilling, Farrukh B. Erkinov, Biloliddin B. Qobilov, Mukhammadamin Sh. Jololdinov

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of the study was to investigate the possibility of using natural bentonite samples obtained from the Qiziltepa district of Navoiy region in drilling operations. Within the scope of the study, the chemical and mineralogical compositions of the bentonite were determined using X-ray diffraction (XRD) and X-ray fluorescence (XRF) analysis methods. In addition, several enrichment methods for bentonite were tested under laboratory conditions. These included magnetic separation of the bentonite suspension formed with water, washing, and acid washing using oxalic acid for chemical enrichment. The chemical and mineralogical composition of the resulting samples was reanalyzed, relevant tables were compiled, …


Peculiarities Of Preparation Of Nanostructured Cerium-Doped Lutetium-Aluminium Garnet Powders Prepared By Sol-Gel Combustion Method, Eygeniy N. Poddenezhny, Ekaterina E. Trusova, Andrei A. Boiko, Vladimir S. Urbanovich Jun 2025

Peculiarities Of Preparation Of Nanostructured Cerium-Doped Lutetium-Aluminium Garnet Powders Prepared By Sol-Gel Combustion Method, Eygeniy N. Poddenezhny, Ekaterina E. Trusova, Andrei A. Boiko, Vladimir S. Urbanovich

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of the work is to study a new method of thermochemical synthesis of luminescent powder of lutetium-aluminium garnet activated by cerium ions (Lu3Al5O12:Се3+) using nitric acid salts of lutetium, aluminium and cerium, and a mixture of acetic acid and polyvinyl alcohol as a propellant. The synthesis process was carried out in a muffle furnace at an initial temperature of 350 ºC under conditions of limited presence of atmospheric air. The average size of the coherent scattering region for Lu3Al5O12:Се3+ obtained from the combustion …


Evaluation Of Coal Properties Used In A Cement Plant, Geun-Seong Lee, Farrukh B. Erkinov, Mastura Kh. Aripova Jun 2025

Evaluation Of Coal Properties Used In A Cement Plant, Geun-Seong Lee, Farrukh B. Erkinov, Mastura Kh. Aripova

CHEMISTRY AND CHEMICAL ENGINEERING

Coal is not only a heat source for clinker burning but also the coal ash after combustion plays a large role in the quality of clinker mixed with hot meals in the kiln. Since the properties of coal vary depending on the coalification and environment in which it was sedimented, the quality of coal supplying to cement plant can change greatly depending on the coal seam even if it is from the same coal mine. Therefore, the coal used in a cement plant should have its properties measured accurately through representative sampling whenever it is supplied to the plant, and …


Preparation Of Nano-Sized Silver Particles By Electrolysis From Silver-Containing Electrical Scrap, Umar A. Yakhyaev, Mastura Kh. Aripova, Ripsime V. Mkrtchyan, Dilrabo A. Mukhtorova Jun 2025

Preparation Of Nano-Sized Silver Particles By Electrolysis From Silver-Containing Electrical Scrap, Umar A. Yakhyaev, Mastura Kh. Aripova, Ripsime V. Mkrtchyan, Dilrabo A. Mukhtorova

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of the study was preparation of nanosized silver particles by electrolysis from silver-containing scrap from electrical engineering production. For this purpose, at the first stage, silver particles with a size of 0.2–2 microns were obtained by the cementation method, confirmed by the results of scanning electron microscopy. A silver anode for the electrolysis unit was created from the obtained silver particles by the melting method. At the second stage, electrolysis was carried out on a unit with rotating electrodes, in which the cathode was made of platinum. Optimum conditions for the electrolysis process, carried out at a voltage …


Synthesis Of Neodymium Oxide Nanotubes Via Chemical Deposition Followed By Thermal Treatment, Odiljon E. Abdurakhmonov, Mastura Kh. Aripova, Sherzod E. Abdurakhmonov, Zaynobiddin T. Matkarimov, Sultan Kh. Suleymanov, Natalya A. Kulagina Jun 2025

Synthesis Of Neodymium Oxide Nanotubes Via Chemical Deposition Followed By Thermal Treatment, Odiljon E. Abdurakhmonov, Mastura Kh. Aripova, Sherzod E. Abdurakhmonov, Zaynobiddin T. Matkarimov, Sultan Kh. Suleymanov, Natalya A. Kulagina

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of this work is to synthesize Nd2O3 nanotubes via chemical deposition followed by thermal treatment. Nd(OH)3 nanotubes were synthesized using Nd(NO3)3 as a precursor and NaOH as a precipitant. After thermal treatment, crystalline Nd2O3 nanotubes were obtained. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were conducted to study the thermal effects and phase transitions during the synthesis. X-ray phase analysis (XRD) was used to determine the phase composition and crystal structure. In addition, the construction of the crystal lattice structure is carried out using programs.The morphological characteristics …


Poly(Pyridinium Salt)S Containing 9,9-Bis(4- Aminophenyl)Fluorene Moieties With Various Organic Counterions Exhibiting Both Lyotropic Liquid-Crystalline And Light-Emitting Properties, Pradip K. Bhowmik, David King, Haesook Han, Andras F. Wacha, Matti Knaapila Jun 2025

Poly(Pyridinium Salt)S Containing 9,9-Bis(4- Aminophenyl)Fluorene Moieties With Various Organic Counterions Exhibiting Both Lyotropic Liquid-Crystalline And Light-Emitting Properties, Pradip K. Bhowmik, David King, Haesook Han, Andras F. Wacha, Matti Knaapila

Chemistry and Biochemistry Faculty Research

Main-chain conjugated and non-conjugated polyelectrolytes are an important class of materials that have many technological applications ranging from fire-retardant materials to carbon-nanotube composites, nonlinear optical materials, electrochromic materials for smart windows, and optical sensors for biomolecules. Here, we describe a series of poly(pyridinium salt)s-fluorene containing 9,9-bis(4-aminophenyl)fluorene moieties with various organic counterions that were synthesized using ring-transmutation polymerization and metathesis reactions, which are non-conjugated polyelectrolytes. Their chemical structures were characterized by Fourier transform infrared (FTIR), proton (1H) and fluorine 19 (19F) nuclear magnetic resonance (NMR) spectrometers, and elemental analysis. They exhibited polyelectrolytic behavior in dimethyl sulfoxide. Their lyotropic liquid-crystalline phases were …


Keynote: Robotizing The Picking And Sorting With Grabtm And Sorttm, Lars Eilertsen Jun 2025

Keynote: Robotizing The Picking And Sorting With Grabtm And Sorttm, Lars Eilertsen

International Material Handling Research Colloquium

No abstract provided.


Paving The Way For The Future Of Robotic Compact Storage And Retrieval Systems: An Innovative Conceptual Design, Mahmut Tutam Jun 2025

Paving The Way For The Future Of Robotic Compact Storage And Retrieval Systems: An Innovative Conceptual Design, Mahmut Tutam

International Material Handling Research Colloquium

No abstract provided.


A Multi-Model Tool For Evaluating Sustainability Levels Of Last Mile Logistic Services Developed By Drones, Maria Grazia Gnoni, Fabiana Tornese, Lorenzo Rubrichi Jun 2025

A Multi-Model Tool For Evaluating Sustainability Levels Of Last Mile Logistic Services Developed By Drones, Maria Grazia Gnoni, Fabiana Tornese, Lorenzo Rubrichi

International Material Handling Research Colloquium

No abstract provided.


Estimating Order Picking Distances Using Machine Learning, Hector J. Carlo, Carlos A. Morel-Figueroa, Victoria Méndez-González, Yamilette Boscio-Sánchez, Alex Demel-Pacheco Jun 2025

Estimating Order Picking Distances Using Machine Learning, Hector J. Carlo, Carlos A. Morel-Figueroa, Victoria Méndez-González, Yamilette Boscio-Sánchez, Alex Demel-Pacheco

International Material Handling Research Colloquium

No abstract provided.


Enhancing Social Sustainability In Parcel Hubs Using Discrete Event Simulation And Multi-Objective Optimization, Harald Steinkellner, Domenik Kaever, Christoph Rockenschaub Jun 2025

Enhancing Social Sustainability In Parcel Hubs Using Discrete Event Simulation And Multi-Objective Optimization, Harald Steinkellner, Domenik Kaever, Christoph Rockenschaub

International Material Handling Research Colloquium

No abstract provided.


Throughput Comparison Between An Amr-Based Sorting System And A Loop Sorter: A Case Study On High-Performance Parcel Sorting, Moritz Roidl Jun 2025

Throughput Comparison Between An Amr-Based Sorting System And A Loop Sorter: A Case Study On High-Performance Parcel Sorting, Moritz Roidl

International Material Handling Research Colloquium

No abstract provided.


Supply Chain Robustness And Resilience Modeling Using Bayesian Networks, Md Sarder, Seyedmohsen Hosseini Jun 2025

Supply Chain Robustness And Resilience Modeling Using Bayesian Networks, Md Sarder, Seyedmohsen Hosseini

International Material Handling Research Colloquium

No abstract provided.