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Recent Submissions

Analysis of core velocity in the presence of solids using UDV and improved model for cloud height in stirred tanks
Fırat Taşkın, Ahmet; Uludağ, Yusuf; Ayrancı Tansık, İnci (2024-03-05)
Formation of cloud height is undesired due to limited mixing between clear liquid and solids rich volume; therefore, an accurate prediction of the cloud height is crucial. In this work, ultrasound Doppler velocimetry was e...
Nanoparticle-Assisted Liquid Crystal Droplet Sensors Enable Analysis of Low-Concentration Species in Aqueous Medium
Sezer, Selda; Büküşoğlu, Emre (2024-02-13)
We introduce nanoparticle-assisted liquid crystal (LC) droplet-based sensors that allow determination of low-level concentrations of aqueous soluble species. The silica nanoparticles functionalized with mixed monolayers co...
An empirical model for the prediction of cloud height
Altıntaş, Ezgi; Ayrancı Tansık, İnci (2024-02-01)
At high solids concentrations (>2 vol%), a clear interface appears between solid-rich and liquid-rich parts of a solid-liquid mixing tank. The height of this interface is known as cloud height. The cloud height is one of t...
Phytochemicals in Pancreatic Cancer Treatment: A Machine Learning Study
Genc, Destina Ekingen; Ozbek, Ozlem; Oral, Burcu; Yıldırım, Ramazan; İleri Ercan, Nazar (2024-01-09)
The discovery of new strategies and novel therapeutic agents is crucial to improving the current treatment methods and increasing the efficacy of cancer therapy. Phytochemicals, naturally occurring bioactive constituents d...
Solids dispersion in high density circulating fluidized beds
Külah, Görkem; Bi, X.T.; Lim, C.J.; Grace, J.R. (2024-01-01)
Transient local solid tracer concentration distributions were measured by a novel, simple and accurate measurement system with fast response to obtain axial solids dispersion in the riser of a circulating fluidized bed ope...
Physics in deformable spacetime: Physical laws emerging from the surface minimality principle and the masses of particles
Gündüz, Güngör (2024-01-01)
In this work, the study was focused on how deformable spacetime gives rise to physical laws, particularly quantum and special relativity. It was shown that both the Lorentz factor and quantum mechanics can emerge from the ...
Nonoxidative dehydrogenation of propane using boron-incorporated silica-supported Pt Sites synthesized by atomic layer deposition
Çelik, Gökhan (2024-01-01)
Nonoxidative dehydrogenation of propane to propylene using Pt-based supported catalysts is an active research area in catalysis because catalyst attributes of Pt sites can be controlled by careful design of active sites. O...
PdH α-phase is associated with residual oxygen as revealed by in situ 1H NMR measurements and DFT-NMR estimations
Mete, Ersen; Yılmaz, Begüm; Üner, Deniz (2023-12-30)
An experimental and DFT study was conducted to investigate the chemical nature of α and β PdH phases in Pd/TiO2 through the detailed analysis of their 1H NMR chemical shifts. α-PdH states are identified with shielded 1H NM...
Charge decay in the spatial afterglow of plasmas and its impact on diffusion regimes
Abuyazid, Nabiel H.; Üner, Necip Berker; Peyres, Sean M.; Mohan Sankaran, R. (2023-12-01)
The spatial afterglow is a region at the boundary of a non-equilibrium plasma where charged species relax into ambient equilibrium. In many applications, the spatial afterglow is the part of the plasma that interacts with ...
Water-Based Route for Dopamine and Reduced Graphene Oxide Aerogel Production
Kavak, Öznur; Can, Barış; Bat, Erhan (American Chemical Society (ACS), 2023-11-29)
Water pollution caused by domestic waste oil and accidents with oil/organic spill needs immediate remediation, as such a pollution causes serious threats to health and the environment. Development of absorbent materials fo...
Understanding directed assembly of concentrated nanoparticles at energetically heterogeneous interfaces of cholesteric liquid crystal droplets
Akman, Ali; Büküşoğlu, Emre (2023-11-01)
Colloidal self-assembly has gained significant interest in scientific and technological advances. We investigated the self-assembly of the colloids at fluidic interfaces that mediate elastic interactions. Whereas past stud...
Water-Based Route for Dopamine and Reduced Graphene Oxide Aerogel Production
Doğan, Öznur; Can, Barış; Bat, Erhan (2023-11-01)
Axial gas mixing in conical spouted beds with high density particles
Güler, Neslin; KÖKSAL, MURAT; Külah, Görkem (2023-10-01)
Conical spouted beds operating with high-density particles (ρp > 2500 kg/m3) have recently gained attention because of their potential use as nuclear fuel coaters for next-generation nuclear reactors. In the literature, th...
Coarse-grained modeling of polystyrene-modified CNTs and their interactions with lipid bilayers
Gul, Gulsah; Faller, Roland; İleri Ercan, Nazar (2023-05-01)
In the present work, we describe Martini3 coarse-grained models of polystyrene and carboxyl-terminated polysty-rene functionalized carbon nanotubes (CNTs) and investigate their interactions with lipid bilayers with and wit...
Controlling Cellulose Membrane Performance via Solvent Choice during Precursor Membrane Formation
Tekin, Fatma Seden; Çulfaz Emecen, Pınar Zeynep (2023-03-10)
Fabrication of cellulose membranes by alkaline hydrolysis of cellulose acetate (CA) membranes is a simple alternative method to preparing cellulose membranes via phase inversion from their ionic liquid solutions. In this s...
A comprehensive overview of carbazole-EDOT based electrochromic copolymers: A new candidate for carbazole-EDOT based electrochromic copolymer
Carbas, Buket Bezgin; Özbakır, Sinan; Kaya, Yasemin (2023-03-01)
In recent years, there has been an increase in the demand for the synthesis of carbazole-EDOT based electrochromic copolymers since this combination of structures facilitates the obtaining of a free standing film on the wo...
Coupling of spectral thermal radiation model with a comprehensive system model for co-combustion of biomass in bubbling fluidized bed
Yaşar, Mehmet Soner; Selçuk, Nevin; Külah, Görkem (2023-02-01)
A previously developed 1-D comprehensive model for a bubbling fluidized bed combustor (BFBC) co-firing lignite with cotton residue and limestone is coupled with a 3-D spectral and gray radiation models utilizing method of ...
Use of conductive polymer-supported oxide-based photocatalysts for efficient VOCs & SVOCs removal in gas/liquid phase
Ajmal, Zeeshan; Naciri, Yassine; Ahmad, Munir; Hsini, Abdelghani; Bouzıanı, Asmae; Laabd, Mohmed; Raza, Waseem; Murtaza, Adil; Kumar, Anuj; Ullah, Sami; Al-Sehemi, Abdullah G.; Al-Ghamdi, Ahmed A.; Qadeer, Abdul; Hayat, Asif; Djellabi, Ridha (2023-02-01)
Volatile and semi volatile organic compounds (VOCs and SVOCs) are regarding as serious environmental pollutants owign to causing a lot of diseases around the world. The VOCs and SVOCs can be accumulated in both indoor and ...
Cloud height in stirred tanks: Identification of limitations and clarification of the definition
Altıntaş, Ezgi; Ayrancı Tansık, İnci (2023-02-01)
Cloud height is known as the height of the interface that forms between liquid-rich and solid-rich parts of a stirred tank at high solids concentrations. Formation of cloud height is undesired as mixing between the two par...
Can Pyrolysis Oil Be Used as a Feedstock to Close the Gap in the Circular Economy of Polyolefins?
Erkmen, Berrak; Ozdogan, Adem; Ezdesir, Ayhan; Çelik, Gökhan (2023-2-01)
Plastics are engineering marvels that have found widespread use in all aspects of modern life. However, poor waste management practices and inefficient recycling technologies, along with their extremely high durability, ha...
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