Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14517/19

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Preface
(IGI Global, 2009) Yamamoto, G.T.
Numerical Simulation of Laminar and Two-Phase Flow and Heat Transfer of Water-Aluminum Oxide Nanofluid in Microchannel with V-Shaped Ribs
(Elsevier B.V., 2025) Koveiti, A.; Ali, A.B.M.; Alhamdi, S.F.H.; Akbari, O.A.; Ahmadi, G.; Salahshour, S.; Baghaei, S.
In this study, a rectangular microchannel equipped with V-shaped ribs at the bottom filled with a solid-liquid suspension of water-aluminum oxide is evaluated. to better estimate the movement of solid-liquid phases, the two-phase mixture method simulates the incompressible water-aluminum oxide nanofluid (NF). The results are obtained for different hydrodynamic and heat transfer values and volume fraction of solid nanoparticles (φ) = 0, 2, and 4 % and Reynolds number (Re) = 400-1200. The finite volume method (FVM) in three-dimensional (3D) space is used for simulations. The results show that the fluid in the areas after the ribs has reverse velocity gradients and by increasing α, the wake area increases. By increasing α, the vortices and velocity gradients separated from the ribs’ surfaces penetrate the central core of the flow. At α = 50°, because the fluid collides with the ribs, it is asSociated with a greater velocity drop and the creation of stronger vortices, so Cf has the highest value. In the ribbed region and for α = 40° to α = 50°, the changes in local Nusselt number are similar. By increasing φ, the penetration of fluid to the back of the ribs becomes possible; In these diagrams, the minimum amount of Sgen is for α = 40° and 50°. In general, the behavior of Sgen is the same as the growth of dimensionless temperature, and at Re= 400, the maximum amount of Sgen is related to α = 20°. © 2025 The Author(s)
Swarm Intelligent Computing Procedures to Solve the Novel Precautionary Measures in the Nonlinear HIV System
(Springer, 2025) Umar, M.; Amin, F.; Ali, M.R.
The current investigations present a novel prevention dynamic in the Human immunodeficiency virus (HIV) system, which is one of the deathly, convertible and unsafe viruses that arise almost the entire world. Since there is currently no confirmed remedy or medication, therefore the researchers are motivated to offer a mathematical preventive group in HIV, which makes this system HIPV. This novel category includes the injectable medicine, avoid getting pregnant, safety precautions, and contact frequency. The numerical solutions of the HIPV model are presented by applying the artificial neural networks (ANNs), while the hybridization of global particle swarm optimization (PSO) and local interior-point algorithm (IPA) approaches are used in the optimization process. The correctness of the solver ANNs-PSO-IPA is observed by using the comparison of the results, which are based on proposed and reference Runge–Kutta scheme as well as minor absolute error, while some statistical measures are performed in order to get the reliability of the designed solver. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.
Revealing a Gold Mine of Bioactive Compounds from Natural Sources Using in Vitro, in Silico, and Network Pharmacology: A Case Study on Cachrys Cristata
(John Wiley and Sons Inc, 2025) Kurt-Celep, I.; Ahmed, S.; Cetiz, M.V.; Uba, A.I.; Ak, G.; Selvi, S.; Zengin, G.
The study aimed to explore the chemical composition and assess the wide-ranging biological effects of Cachrys cristata extracts, including ethyl acetate, ethanol, ethanol/water (70%), and water. We evaluated the bioactive potential of these extracts by different chemical techniques such as radical scavenging, reducing power, and metal chelation assays. Additionally, we conducted enzyme inhibition assays to target cholinesterase, tyrosinase, amylase, glucosidase, elastase, collagenase, and hyaluronidase. In the profile analysis, we determined that the main components are phenolic acids, mainly caffeic acid with the highest concentrations. The water extract of the plant showed the highest concentration of phytochemicals and superior antioxidant activity. In addition, the ethanol and ethyl acetate extracts showed the greatest level of inhibition of most of the evaluated enzymes. On the other hand, its potential protective effects against UV-induced oxidative stress, genotoxicity, and extracellular matrix (ECM) degradation were investigated. Different extracts of the plant were evaluated in terms of their effects on DNA damage, cellular viability, ECM enzymes, and matrix metalloproteinases (MMPs). COMET analysis showed that DNA breaks and genotoxicity caused by UV rays were significantly suppressed, especially by the water extract. Furthermore, network pharmacology analyses, in conjunction with in silico molecular docking and molecular dynamics simulations, demonstrated robust ligand–protein interactions and furnished insights into the underlying mechanisms, thereby substantiating the plant's therapeutic potential. Overall, our research highlights the significant potential of C. cristata as a valuable reservoir of bioactive chemicals that can be utilized in the health and wellness industries. © 2025 Deutsche Pharmazeutische Gesellschaft.
Effect of the Early Introduction of Trophic Donor Human Breast Milk on the Preservation of Postoperative Gut Functions in a Fasting Animal Model
(Elsevier Inc., 2025) Tuzlaci, A.; Kolayli, F.; Muezzinoglu, B.; Güvenç, B.H.
Dietary restrictions, such as avoiding oral intake until postoperative ileus resolves, can result in negative nitrogen balance, weakened immune function, and impaired digestive system performance. This study investigates the efficacy of donor human breast milk (HM) in early trophic enteral feeding and its impact on gut functions during prolonged postoperative fasting in an animal model. Male Wistar rats were deprived of food for 48 hours with free water access. After a complete ileal transection and an end-to-end intestinal anastomosis, the rats were divided into three groups: prolonged fasting (PF), early trophic feeding with HM, and feeding with commercial formula (CF). Each group was further divided into 48- and 72-h postoperative subgroups. The study measured the number of colony-forming units in mesenteric lymph nodes, serum alkaline phosphatase (ALP) levels, and histopathological data between groups. At postoperative 48 and 72 hours, the mean apoptotic index of HM group was significantly lower than in PF group (P<.001). A significant decrease was observed in apoptosis in HM group over time (P=.047), while the CF (P=.327) and PF (P=.959) groups did not show significant changes. HM significantly prevented villus atrophy (P<.01), and bacterial translocation to mesenteric lymph nodes (P<.05) compared to CF and PF. Serum ALP levels, an indicator of intestinal mucosal regeneration, was significantly highest in the HM group at 72 hours compared to other groups (P=.03). These findings suggest that HM not only maintains the structural and functional gut integrity but also promotes earlier and more effective recovery of the intestinal health. © 2025 Elsevier Inc.
Fixed-Time Synchronization of Fractional-Order Hopfield Neural Networks with Proportional Delays
(Elsevier B.V., 2026) Kumar, P.; Assali, E.A.
This article explores the fixed-time synchronization of fractional-order Hopfield neural networks incorporating proportional delays. Unlike finite-time synchronization, where the convergence time varies based on the initial synchronization errors, fixed-time synchronization allows for a predetermined settling time that remains independent of initial conditions. to achieve fixed-time synchronization, two types of feedback control strategies incorporating fractional integrals are employed: one based on state feedback and another utilizing a controller designed with a Lyapunov function and an exponential function. By designing appropriate Lyapunov functions and employing inequality techniques, multiple sufficient conditions were established to guarantee the fixed-time synchronization of the considered systems under these control strategies. Finally, two numerical examples are presented to demonstrate the validity and practical relevance of the theoretical findings. © 2025 International AsSociation for Mathematics and Computers in Simulation (IMACS)
Pharmacists Role in Cost Saving and Waste Minimization Study on Antineoplastic Drugs: A Multi-Central Study in Turkey
(Marmara University, Fac Pharmacy, 2025) Kanmaz, O.; Macit, C.; Eroglu, I.; Berk, B.
Cancer diseases are the most common cause of death and chemotherapeutics used in cancer treatment have an important place in the budget allocated to health due to their high costs. This study aims to reduce disposal costs and reduce chemotherapy drug expenses through cost savings. Our study was conducted between November 2017 and July 2018 (1st semester) and between August 2018 and April 2019 (2nd semester) in three hospitals using a common chemotherapy drug preparation center. Chemotherapy sessions were rearranged in accordance with the drugs included in the treatment plans to reduce drug costs. The drug quantities billed through hospital automation programs and the disposal costs of unused drugs were reported by the pharmacists on a milligram (mg) basis. The obtained data was analyzed by the GraphPad Prism program. P<0.05 was considered significant. While the total amount of waste medicine in the 1st. period was reported as 371,866 mg, it was reported as 303,056 mg in the 2nd. period (p<0.05). While the total disposal cost was calculated at € 87,867.02 in the 1st. period, it was calculated € 26,392.48 in the 2nd. period under the control of pharmacists (p<0.01). In this study, it was observed that providing and monitoring drug preparation services by well-equipped pharmacists specialized in the field of oncology gave positive results in terms of reducing both drug expenditures and drug disposal costs. Further studies are needed to determine the safety of chemotherapy pharmacists and patients. © 2025 Marmara University Press.
Mobilized Marketing and the Consumer: Technological Developments and Challenges
(IGI Global, 2009) Yamamoto, G.T.
In the last twenty years, the Internet and information technologies in general have evolved creating numerous changes and developments in regard to the circulation of information around the world. Mobilized Marketing and the Consumer: Technological Developments and Challenges explores technological developments and widespread issues concerning the explosion of mobile devices in the information age. Providing breakthrough research on topics such as Bluetooth, mobile phones, and online portals, this innovative publication investigates best practices for human interaction with information technologies. © 2010 by IGI Global. All rights reserved.
Does Weight Loss Impact Voice Quality in Obese Individuals
(Lippincott Williams and Wilkins, 2025) Özdemir, E.; Arslanoǧlu, A.; Göktaş, K.; Eren, D.D.; Cirik, A.A.; Sünnetçi, G.; Saltürk, Z.
Background: Obesity causes changes in the vocal tract. Aims and Objectives: to investigate the impact of obesity and weight loss on voice. Methods: The study involved 12 obese and 8 nonobese participants. Weight, body mass index, and body fat percentage were assessed. Voice parameters were measured, including maximum phonation time, fundamental frequency (F0), jitter, shimmer, and the noise-to-harmonics ratio. The Voice Handicap Index-10 was utilized for self-assessment. After 3 months, voice parameters were reassessed, and the changes were correlated with body mass index. Results: The obese group demonstrated significant weight loss and decreased body fat percentage. Maximum phonation time was lower in the obese group but increased after weight loss. F0 did not differ between groups at baseline but increased in the obese group following weight loss. Jitter values were similar between groups but decreased in the obese group. Shimmer was higher in the obese group at both baseline and follow-up, but it showed a significant decrease. Voice handicap index-10 scores were significantly higher in the obese group and decreased markedly. Conclusions: Obesity is linked to changes in MPT and disturbance. Dietary intervention leads to enhancements. Significance: This is the first study evaluating the effect of losing weight with diet on voice. © 2025 by Mutaz B. Habal, MD.
Business Ethics and Technology in Turkey: An Emerging Country at the Crossroad of Civilizations
(IGI Global, 2009) Yamamoto, G.T.; Karaman, F.
IT ethics cannot be analyzed without assessing business ethics in general and the cultural environment. This study is based on the Turkish case. Turkey lies at the crossroads of civilizations, making it hard to define a generally accepted set of ethical principles. Western, Islamic, and Turkish cultures are in competition with each of them, and a synthesis has not yet been achieved. Therefore, a common identity and common ethical standards cannot be acquired. In fact, such a synthesis could be categorized as a new civilization. This disagreement causes proliferation of unethical behaviors such as the illegal copying of software. The majority of highly educated technical people in Turkey approves of the illegal copying of software, if it is necessitated by the interests of the country. This shows that we have a long way to go to reach global ethical standards, and country-specific differences cannot be eliminated in the short term. © 2010 by IGI Global. All rights reserved.
Promising Effects of Various Types of Twisted Tapes on the Printed Circuit Heat Exchangers Filled with Supercritical Carbon Dioxide: A Numerical Study
(Elsevier Ltd, 2025) Li, H.; Rasheed, R.H.; El-Sharkawy, M.R.; Salazar, M.J.M.; Jebur, S.K.; Al-Bahrani, M.; Emami, N.
Printed circuit heat exchangers (PCHEs) are compact and efficient devices widely used for heat transfer in various applications. The heat transfer performance of PCHEs can be further improved through the use of twisted tape inserts, which enhance fluid mixing and induce secondary flows. The effect of twisted tape inserts on the flow and heat transfer characteristics of PCHEs with straight channels is investigated using numerical analysis. Different twisted tape configurations are examined, including variations in twist ratio, pitch, and orientation. Additionally, a novel design involving rotating plates inside the straight channels is proposed, which can be fabricated using 3D printing or similar techniques. The performance of these rotating plates is compared with that of conventional twisted tapes and plain PCHEs. Results indicate that twisted tapes and rotating plates significantly enhance heat transfer, with the plus-shaped twisted tape increasing the local heat transfer coefficient by up to 37.56 % and the average Nusselt number to 64.27. This enhancement is accompanied by an increase in pressure drop and pumping power, up to 48.63 %. The double horizontal twisted tape, with a PEC number of 1.46832, is identified as the optimal design. These findings underscore the potential of these methods for improving heat transfer in PCHEs. © 2024
Mobile Customer
(IGI Global, 2009) Yamamoto, G.T.
Organizations and people, whenever they need to, aim to fulfill their requirements with suitable products and services. The suppliers of these requirements perform a certain marketing process until the requirement is fulfilled. In this process, first the attributes of the product or service are determined. Various studies are made during the identification of these attributes. These studies are evaluated from the customer’s perspective for conformity to taste, functionality, suitability to place and culture, convenience for budget and time. The purchasing process is concluded upon the final decision of the people or organizations that see the suitability of the product to fulfill their requirements. In this context, the mobile customer tries to cover his or her requirements with the knowledge based on information obtained from the virtual environment, and reaches facts via virtual data, and the customer creates a new structure with different features. This section aims to detail the changing customer structure, the individualization and the experienced changes and considers the transformation of individuals into mobile customers. Generations who depended on products of high-technology development, which show themselves with different aspects, have also brought differences to marketing. They have both changed the production and service approach, and began to benefit from different types of products and services. In addition to other environmental conditions that affect life, human generations who change due to the effects of the means of the age should also be examined in this context. © 2010 by IGI Global. All rights reserved.
An Extendable High Step-Up Interleaved DC–DC Converter Utilizing a Switched Capacitor Cell
(John Wiley and Sons Inc, 2025) Alizadeh, D.; Babaei, E.; Mousavi, S.M.J.
A DC–DC interleaved converter with a coupled inductor is proposed in this study. This converter is capable of generating high voltage through the use of switched capacitors and additional components. It is designed to serve as an interface device in renewable energy applications. The proposed interleaved design features minimal ripple in the input current, enhancing the longevity of solar panels. This configuration can function as a single or dual-input design for boosting input power. In addition to the mentioned benefits, the proposed converter also reduces voltage stress on the components. This decrease in voltage stress results in smaller component sizes and lower conductive losses in the MOSFETs. The theoretical examination of the proposed structure includes steady-state analysis and evaluation of voltage stress on components, as well as the design of the converter. An in-depth comparison is conducted to highlight the strengths and weaknesses of the proposed structure. Following the calculations and theoretical analysis, a laboratory prototype with a 400 W power capacity is implemented to test the performance of the proposed structure. © 2025 The Author(s). IET Power Electronics published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology.
Mobilizing World
(IGI Global, 2009) Yamamoto, G.T.
The human being benefits from his or her ability to communicate and turn knowledge into action in order to sustain its ability to survive on this planet, the earth. As a result of the fast life conditions imposed on humanity, point-to-point relationships have begun to be established in a faster way and the idea to use technology to acquire and share knowledge has become widespread. Doing the right thing leads to improving and advancing the standard of life. The products of the mind can now be produced easier than ever by scope of technology. Intercommunication between people begins with talking; humans first talk and then express his or her emotions and opinions. Mobile telephone is the name of the latest technology which creates a worldwide area to talk in. One can easily notice how much the sector and its applications have developed only by looking at the first mobile phone which was launched in the world. Motorola Dyna TAC 8000x is one of these telephones. Its dimensions are 13x1.75x3.5. This is a brick-size device and you had to pay US $3,995 to own it in 1983. In return, what you would get was just a telephone which provides just voice communication and which could be used while moving. This affected concurrently users, families, types of entertainment even health issues and payments. The positive and negative effects have appeared in the evolutionary stage. Like the virtual environment (Han, Kim & Lee, 2005), the mobile environment which is used in order to cover customers’ needs for communication, information and entertainment is related to marketing with its different spirals and own sanctions. In this chapter we would like to give short notices for future researchers about the present conditions of major important topics and some new trends of these subjects. © 2010 by IGI Global. All rights reserved.
Effects of Hybrid Nanofluids on Boosting Heat Transfer within Curved Helical Tubes: A Computational Investigation
(Elsevier B.V., 2025) Miansari, M.; Ashuri, M.; Ali, A.B.M.; Etghani, M.M.; Akbari, O.A.; Moghadasi, H.; Baghaei, S.
This study numerically investigates the thermal performance of a heat exchanger featuring a curved helical tube and hybrid nanofluids using water as the base fluid. The simulations are conducted using a Computational Fluid Dynamics (CFD) code based on the Finite Volume Method (FVM). Three working fluids—pure water, Water/Ag-MgO, and Water/Al₂O₃-CuO—are examined across a range of Reynolds numbers (Re = 500–2000), under steady, laminar, Newtonian, and three-dimensional flow conditions. Results indicate that hybrid nanofluids exhibit higher pressure drops compared to pure water across all volume fractions and Reynolds numbers. Notably, Water/Ag-MgO with higher volume fractions shows the greatest pressure drop. As volume fraction increases, differences in performance become more pronounced. The thermal efficiency for certain volume fractions of Water/Ag-MgO and Water/Al₂O₃-CuO exceeds one, indicating improved thermal performance over pure water, while lower fractions yield efficiencies below one. Therefore, the selection of an appropriate volume fraction is critical. As the Reynolds number increases up to 1000, thermal efficiency improves significantly; beyond this point, the growth rate slows. The maximum efficiency is achieved with Water/Ag-MgO at Re = 2000. © 2025 Elsevier B.V.
Mobile Promotion
(IGI Global, 2009) Yamamoto, G.T.
Promotions are various activities which are realized in order to create and maintain demand for products or services. Promotions are created to reach customers and to gain some profit from them. Therefore, these activities are very important for marketers. In mobile marketing, mobile promotions mean that the companies’ promotional activities are done with mobile devices. Mobile promotion can also be defined as the conduct of promotion activities via mobile instruments. In its most common sense, mobile promotion considered as the promotional method for the customer in an appropriate and permitted manner by benefitting from a live media via mobile devices such as PDA. In this chapter, mobile promotions are evaluated. Mobile advertising and consumer reaching technologies such as SMS and MMS are discussed in detail. Types and the user profile are also examined and some current activities are stated. One-to-one communication and sales promotions such as coupons and other motivational material are broadly composed in this chapter. © 2010 by IGI Global. All rights reserved.
Mobile Marketing Practices
(IGI Global, 2009) Yamamoto, G.T.
Business types seen in e-commerce such as: e-shopping, e-store, e-tailing, e-auctioning, e-banking, e-trading, e-entertaining, e-learning, e-realtor, e-gambling, e-directory, e-news, e-zine, e-advertising, and e-logistics are now transforming into m-shopping, m-store, m-tailing, m-auctioning, m-banking, mtrading, m-entertaining, m-learning, m-realtor, m-gambling, m-directory, m-news, m-zine, m-advertising, and m-logistics. © 2010 by IGI Global. All rights reserved.
Information Age
(IGI Global, 2009) Yamamoto, G.T.
In this section, the processes leading to the information age and mobile technology are examined. The affects of certain inventions are discussed through having a look at the period which began when human kind gained the ability to direct energy with the invention of fire, and continued with the construction of simple machinery, and then reaching the Industrial Revolution with the influence of the modern scientific approach. Here, the appearance of technological development and technique in order to provide ease for people are being inspected. In the development and advancement of the human being, it is suggested that the work that initially required raw power, was transferred to simple machinery, and then to normal machinery. Many technological innovations with many contributions to living are taken into account from fairy tales to films made through the use of virtual means as the products of the creative mind related with the passion of invention. Passage to the Industrial Revolution has been triggered with the appearance of the required ideas for the invention of the work performer and caller forces or intelligent machines. © 2010 by IGI Global. All rights reserved.
Enhancing Heat Transfer Across Applications with Triply Periodic Minimal Surface (TMPS) Structures: A Comprehensive Review
(Elsevier Science Sa, 2025) Rashid, Farhan Lafta; Al Maimuri, Najah M. L.; Al-Obaidi, Mudhar A.; Eleiwi, Muhammad Asmail; Ameen, Arman; Ahmad, Shabbir; Agyekum, Ephraim Bonah
The current research evaluates how triply periodic minimal surface (TPMS) structures, specifically Gyroid configurations, enhance heat transfer in thermal management systems by addressing heating issues caused by miniaturized electronic devices. TPMS structures composed of Gyroid and Fischer-Koch varieties demonstrate up to a 50.6 % improvement in cooling efficiency compared to traditional fin structures. Additionally, the FischerKoch structure facilitates internal flow heat transfer, achieving efficiency levels 12 times greater than conventional designs. The Nusselt number exceedes 80 in TPMS configurations, although pressure drops increases when porosity fell below 0.7. However, the performance evaluation criterion remains above 70 at porosities of 0.8. The effective thermal management of advanced electronic systems benefits from the integration of phase change materials (PCMs) with TPMS structures, as they enhance heat dissipation and reduce melting durations. The review concludes that implementing TPMS components would significantly improve heat transfer, besides enabling designers to optimise thermal management systems within constrained spaces.
Barriers to E-Procurement Adoption: The Turkish Case
(IGI Global, 2009) Yamamoto, G.T.; Karaman, F.
E-procurement practice is not well-established in emerging countries. There are barriers in terms of transportation, financial, telecommunication, and legal infrastructures. Also, a lack of a qualified workforce, cultural barriers, and security problems hinder the development of e-procurement activities. These are not such significant problems in the developed countries. In this study, we examined the Turkish practice. We gave country background information including macroeconomic data and Internet penetration data, and we gave a picture of the current situation of Turkey. We then discussed how these barriers can be overcome in Turkey. Finally, we gave predictions about how m-procurement may alter the situation and its potential for the Turkish market. © 2010 by IGI Global. All rights reserved.

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