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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
Showing 1 - 200 of 265 Journals sorted alphabetically
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 19)
Acta Nova     Open Access   (Followers: 2)
Acta Scientifica Malaysia     Open Access   (Followers: 1)
Acta Scientifica Naturalis     Open Access   (Followers: 4)
Adıyaman University Journal of Science     Open Access  
Advanced Science     Open Access   (Followers: 16)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 8)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 5)
Advances in Research     Open Access  
Advances in Science and Technology     Full-text available via subscription   (Followers: 18)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 7)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 1)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 3)
Alfarama Journal of Basic & Applied Sciences     Open Access   (Followers: 12)
American Academic & Scholarly Research Journal     Open Access   (Followers: 4)
American Journal of Applied Sciences     Open Access   (Followers: 22)
American Journal of Humanities and Social Sciences     Open Access   (Followers: 13)
Anales del Instituto de la Patagonia     Open Access  
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 2)
Arab Journal of Basic and Applied Sciences     Open Access  
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 1)
Archives Internationales d'Histoire des Sciences     Partially Free   (Followers: 5)
Archives of Current Research International     Open Access  
ARPHA Conference Abstracts     Open Access   (Followers: 1)
ARPHA Proceedings     Open Access  
Asian Journal of Advanced Research and Reports     Open Access  
Asian Journal of Scientific Research     Open Access   (Followers: 2)
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 5)
Australian Field Ornithology     Full-text available via subscription   (Followers: 1)
Australian Journal of Social Issues     Hybrid Journal   (Followers: 6)
Bangladesh Journal of Scientific Research     Open Access  
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 1)
Berichte Zur Wissenschaftsgeschichte     Hybrid Journal   (Followers: 11)
Bilge International Journal of Science and Technology Research     Open Access  
Bioethics Research Notes     Full-text available via subscription   (Followers: 15)
BJHS Themes     Open Access   (Followers: 1)
Bulletin de la Société Royale des Sciences de Liège     Open Access  
Bulletin of the National Research Centre     Open Access  
Chain Reaction     Full-text available via subscription  
Ciencia Amazónica (Iquitos)     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencia Ergo Sum     Open Access  
Ciência ET Praxis     Open Access  
Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering     Open Access  
Comunicata Scientiae     Open Access  
Conference Papers in Science     Open Access  
Configurations     Full-text available via subscription   (Followers: 11)
COSMOS     Hybrid Journal   (Followers: 1)
Crea Ciencia Revista Científica     Open Access  
Current Issues in Criminal Justice     Hybrid Journal   (Followers: 14)
Current Research in Geoscience     Open Access   (Followers: 6)
Data     Open Access   (Followers: 4)
Dhaka University Journal of Science     Open Access  
Discover Sustainability     Open Access   (Followers: 5)
Einstein (São Paulo)     Open Access  
Ekaia : EHUko Zientzia eta Teknologia aldizkaria     Open Access  
Emergent Scientist     Open Access  
Enhancing Learning in the Social Sciences     Open Access   (Followers: 7)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entramado     Open Access  
Entre Ciencia e Ingeniería     Open Access  
Epiphany     Open Access   (Followers: 1)
Ethiopian Journal of Education and Sciences     Open Access   (Followers: 5)
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 4)
European Scientific Journal     Open Access   (Followers: 7)
Evidência - Ciência e Biotecnologia - Interdisciplinar     Open Access  
Exchanges : the Warwick Research Journal     Open Access   (Followers: 1)
Experimental Results     Open Access   (Followers: 2)
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access  
Fontanus     Open Access   (Followers: 1)
Forensic Science Policy & Management: An International Journal     Hybrid Journal   (Followers: 252)
Frontiers in Climate     Open Access   (Followers: 5)
Frontiers in Science     Open Access   (Followers: 1)
Fundamental Research     Open Access  
Futures & Foresight Science     Hybrid Journal   (Followers: 1)
Gaudium Sciendi     Open Access  
Ghana Studies     Full-text available via subscription   (Followers: 15)
Global Journal of Pure and Applied Sciences     Full-text available via subscription  
Globe, The     Full-text available via subscription   (Followers: 4)
HardwareX     Open Access  
Heidelberger Jahrbücher Online     Open Access  
Heliyon     Open Access   (Followers: 1)
History of Science and Technology     Open Access   (Followers: 6)
Hoosier Science Teacher     Open Access  
Indian Journal of History of Science     Hybrid Journal   (Followers: 3)
Instruments     Open Access  
Interciencia     Open Access  
International Annals of Science     Open Access  
International Journal of Advanced Multidisciplinary Research and Review     Open Access  
International Journal of Applied Science     Open Access  
International Journal of Engineering, Science and Technology     Open Access  
International Journal of Network Science     Hybrid Journal   (Followers: 3)
International Journal of Social Sciences and Management     Open Access   (Followers: 2)
International Journal of Technology Policy and Law     Hybrid Journal   (Followers: 10)
International Science and Technology Journal of Namibia     Open Access   (Followers: 2)
International Scientific and Vocational Studies Journal     Open Access  
Investiga : TEC     Open Access  
Investigación Joven     Open Access  
Investigacion y Ciencia     Open Access   (Followers: 1)
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
iScience     Open Access   (Followers: 2)
Issues in Science & Technology     Free   (Followers: 8)
Ithaca : Viaggio nella Scienza     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Jaunujų mokslininkų darbai     Open Access   (Followers: 3)
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription  
Journal of Chromatography & Separation Techniques     Open Access   (Followers: 9)
Journal of Advanced Research     Open Access   (Followers: 2)
Journal of Analytical Science & Technology     Open Access   (Followers: 5)
Journal of Applied Science and Technology     Full-text available via subscription   (Followers: 1)
Journal of Applied Sciences and Environmental Management     Open Access   (Followers: 1)
Journal of Big History     Open Access   (Followers: 4)
Journal of Composites Science     Open Access   (Followers: 4)
Journal of Diversity Management     Open Access   (Followers: 4)
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Institute of Science and Technology     Open Access  
Journal of King Saud University - Science     Open Access  
Journal of Mathematical and Fundamental Sciences     Open Access  
Journal of Negative and No Positive Results     Open Access  
Journal of Responsible Technology     Open Access  
Journal of Science and Technology     Open Access   (Followers: 2)
Journal of Science and Technology     Open Access   (Followers: 1)
Journal of Science and Technology (Ghana)     Open Access   (Followers: 3)
Journal of Science and Technology Policy Management     Hybrid Journal   (Followers: 1)
Journal of Science Foundation     Open Access   (Followers: 1)
Journal of Scientific Research and Reports     Open Access   (Followers: 1)
Journal of Shanghai Jiaotong University (Science)     Hybrid Journal  
Journal of Social Science Research     Open Access   (Followers: 2)
Journal of Taibah University for Science     Open Access  
Journal of the Ghana Science Association     Full-text available via subscription   (Followers: 3)
Journal of the History of Ideas     Full-text available via subscription   (Followers: 168)
Journal of the Indian Institute of Science     Hybrid Journal   (Followers: 4)
Journal of the Royal Society of New Zealand     Hybrid Journal   (Followers: 49)
Journal of the South Carolina Academy of Science     Open Access  
Journal of Unsolved Questions     Open Access  
Jurnal Sains Dasar     Open Access  
Jurnal Teknosains     Open Access  
Karaelmas Science and Engineering Journal     Open Access  
Karbala International Journal of Modern Science     Open Access  
Kennedy Institute of Ethics Journal     Full-text available via subscription   (Followers: 10)
Logo STI Science, Technology and Innovation     Open Access   (Followers: 14)
Malawi Journal of Science and Technology     Open Access   (Followers: 6)
Maskana     Open Access  
MethodsX     Open Access  
Mètode Science Studies Journal : Annual Review     Open Access  
Modern Applied Science     Open Access   (Followers: 1)
Momona Ethiopian Journal of Science     Open Access   (Followers: 5)
National Academy Science Letters     Hybrid Journal   (Followers: 3)
National Science Review     Hybrid Journal   (Followers: 1)
Natural Sciences     Open Access  
Natural Sciences Education     Hybrid Journal   (Followers: 1)
Naturen     Full-text available via subscription  
Nepal Journal of Science and Technology     Open Access  
Network Science     Hybrid Journal   (Followers: 4)
Nordic Journal of Science and Technology     Open Access   (Followers: 2)
Nordic Studies in Science Education     Open Access   (Followers: 3)
Nova     Open Access  
Open Conference Proceedings Journal     Open Access  
Open Journal of Applied Sciences     Open Access  
Orbis Cógnita : Revista Científica     Open Access   (Followers: 2)
Patterns     Open Access   (Followers: 9)
People and Nature     Open Access   (Followers: 4)
Población y Desarrollo - Argonautas y caminantes     Open Access  
Politique et Sociétés     Full-text available via subscription   (Followers: 1)
Portal de la Ciencia     Open Access  
Proceedings of the Indian National Science Academy     Full-text available via subscription   (Followers: 5)
Proceedings of the Linnean Society of New South Wales     Full-text available via subscription   (Followers: 2)
Proceedings of the Royal Society of Queensland, The     Full-text available via subscription  
QScience Connect     Open Access  
Quantum Science and Technology     Hybrid Journal   (Followers: 15)
Rafidain Journal of Science     Open Access  
Rehabilitation Research, Policy, and Education     Hybrid Journal   (Followers: 2)
Reportes Científicos de la FaCEN     Open Access  
Reports in Advances of Physical Sciences     Open Access  
Research Ideas and Outcomes     Open Access  
Research Integrity and Peer Review     Open Access  
Research Policy : X     Open Access   (Followers: 3)
Respuestas     Open Access  
Revista Bases de la Ciencia     Open Access  
Revista Cientifica Guillermo de Ockham     Open Access  
Revista Conhecimento Online     Open Access  
Revista Crítica de Ciências Sociais     Open Access  
Revista de Ciencia y Tecnología     Open Access  
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales     Open Access  
Revista de la Universidad del Zulia     Open Access  
Revista Politécnica     Open Access  
Revista Tecnológica     Open Access  
Revista UniVap     Open Access  
SAINSTIS     Open Access  
Sainteknol : Jurnal Sains dan Teknologi     Open Access  
Sci     Open Access  
Science     Full-text available via subscription   (Followers: 5080)
Science & Diplomacy     Free   (Followers: 3)
Science Advances     Free   (Followers: 44)
Science and Technology     Open Access   (Followers: 2)
Science Heritage Journal     Open Access  
Science World Journal     Open Access  
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
ScienceRise     Open Access  
Sciences du jeu     Open Access  

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International Journal of Computational and Experimental Science and Engineering (IJCESEN)
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2149-9144
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  • Vertical Water Silo Design and Analysis

    • Authors: Serap Dogan OZHAN
      Abstract: This study covers the design of the 155 m3 water tank, which is intended to be established in Tersan Shipyard and to be used for the treatment plant, to meet the needs, and the analysis and verification of the design. First of all, the needs were determined and then the solution steps to meet these determinations were determined. The three-dimensional design of the tank, whose material, dimensions and shape were determined, was carried out. In addition, the places where this tank will be fixed were selected and the analysis was carried out in this part by applying the necessary forces to the structure. It was designed using Rhinoceros, a design program, and then Autodesk Nastran finite element analysis program was used. In order for our water tank design to be considered safe, the result of the analysis should be below the maximum Von Mises Stress value occurring in the structure, below 241.68 MPa. Afterwards, the Nastran simulation module was run and as a result of the simulation, Von Mises Stress values of maximum 46.71 MPa and displacement values of maximum 2.136 mm were reached. According to the results obtained, it has been determined that the designed structure is safe.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Pyoderma Gangrenosum: Retrospective Evaluation of Clinical Features and
           Treatment Responses in 23 Cases

    • Authors: Zeynep Büşra BALIK; Gülşen AKOĞLU
      Abstract: Pyoderma gangrenosum (PG) is a rare inflammatory disease in the spectrum of neutrophilic diseases characterized by rapidly progressive, painful and large ulcers. In this study, we aimed to investigate the relationship between the clinical characteristics and treatment responses of patients diagnosed with PG, treated and followed up in our clinic. Between 2018 and 2023, 23 patients diagnosed with PG in our clinic were included in the study. Medical file records were retrospectively analyzed and various demographic and clinical characteristics, comorbid systemic diseases, treatment protocols and treatment responses of the patients were recorded. Twelve (52.2%) of the patients were female and 11 (47.8%) were male, with a mean age of 42.4±12.9 years. The median disease duration was 52 months (range: 10-540 months). Systemic diseases accompanying PG were present in 14 patients (60.9%). Systemic steroids were the most common treatment (43.5%). Other treatment approaches included adalimumab, infliximab, cyclosporine, oral doxycycline, topical tacrolimus, topical corticosteroids and intralesional steroids. Remission was achieved in 14 patients (60.9%), relapse was observed in 5 patients (21.74%), and no remission/relapse information was available for 4 patients (17.4%) who lost follow-up. The median duration of remission was 23 months (range: 3-96 months).Although systemic steroids are most commonly used in the treatment of pyoderma gangrenosum, it should be kept in mind that there are various treatment options ranging from systemic and topical anti-inflammatory therapies to biologic agents according to close follow-up of the patients and additional systemic diseases.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • A Biobjective Approach to Assigning Recreational Activities to Medical
           Tourists

    • Authors: Burak PAÇ
      Abstract: Medical tourism is a growing market due to cost savings for patients and access to treatments unavailable in their home country. Countries offering high-quality medical services at affordable prices have great opportunities for growing their revenue and shares in this market. To increase the welfare of tourists and revenues associated with healthcare tourism, this study proposes a mathematical model for planning the integration of recreational activities to the medical schedules of healthcare tourists. The model achieves this by providing access for medical tourists into appropriate recreational activities based on their medical conditions, availability schedules, and budgets. The proposed integer programming model maximizes a weighted sum of total tourist satisfaction points and profits generated from assigning tourists to recreational activities. It incorporates medical restrictions, ensuring that medical tourists are directed to activities suitable for their medical conditions. The Pareto-efficient frontier for patient satisfaction and company profit is determined utilizing the integer programming model. The proposed model aims for a higher quality experience for health tourists, optimizing their access to recreational activities while promoting economic growth in the health tourism sector. Computational tests demonstrate that the proposed model efficiently solves instance sizes that may arise in practical contexts and enables iterative solutions for obtaining Pareto-efficient frontiers.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Edaravone ameliorates memory, hippocampal morphology, and inflammation in
           a rat model of Alzheimer’s disease

    • Authors: Şeyma ÖZSOY; Elif Azize ÖZŞAHİN DELİBAŞ, Gürkan YİĞİTTÜRK
      Abstract: Oxidative stress and neural inflammation play a role in the pathogenesis of Alzheimer's disease (AD). Edaravone (EDA) has an antioxidant-free radical scavenger property. The purpose of this study to evaluate the effect of EDA on memory, hippocampal morphology, and inflammation in a streptozocin (STZ)-induced AD model. This study used 18 Wistar albino adult rats, weighing 200-220 g. Following general anesthesia, 3 mg/kg STZ was dissolved in 0.9% NaCl and administered intracerebroventricularly (ICV) in both lateral ventricles to 12 rats in a total of 5 µl. The animals were allowed to recover for two weeks and then divided into two groups. Six rats were given 0.9% NaCl i.p. for 15 days, and the other six were administered EDA 40 mg/kg i.p. for 15 days, once a day. The control group of six rats did not undergo any surgical procedures or medications. After treatment, a passive avoidance learning (PAL) test was used, followed by the removal of the brain tissue in all animals. Nissl staining was used to count neurons in the hippocampal CA1 and CA3 regions, and TNF-α and IL-6 levels in the brain were measured. In the STZ group, significantly shorter latency time, and decreased number of neurons in the CA1 and CA3 hippocampal regions compared to the control group were observed. EDA significantly prolonged the latency time and increased hippocampal CA1 and CA3 neuron counts compared to the STZ group. TNF-α and IL-6 levels were higher in the STZ+saline group than in the control group. Similarly, EDA treatment reduced TNF-α and IL-6 levels when compared to the STZ+saline and control groups. For the first time, we demonstrated the neuroprotective and anti-inflammatory potential of EDA in an experimental AD model. Our results may provide evidence for EDA therapy in addition to the standard regimen in patients with cognitive decline.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Qualitative Research on the Radiation Knowledge Levels of Non-Doctor
           Healthcare Workers and Developing Qualitative Scale

    • Authors: Mucize SARIHAN
      Abstract: Radiation is used in a wide variety of fields, especially in the health sector. The human cell must be protected from unwanted radiation doses due to its dangerous effect. Employees' knowledge of radiation is important and therefore this level of knowledge must be known. In this study, a semi-structured qualitative questionnaire was used to determine the perception and knowledge levels of healthcare professionals (nurses, technicians) who do not use dosimeters about ionizing and non-ionizing radiation, and to reveal their experience and opinions on the subject.In-depth interviews were made. Qualitative data coding, content analysis (calculation and mapping of relationships between code frequencies, themes and categories) were performed in the MAXQDA 2020 package program with the data obtained after the interview. 20 healthcare personnel participated in the study. From the data obtained, 10 main themes related to the subject were determined. Main themes emerging; "Harms of radiation", "type and properties of radiation", "all imaging devices emit radiation", "principles of radiation protection", "non-ionizing radiation", "infrared rays", "diagnosis and treatment", "radiation doses Radiation emission," Radiation pollution and ionizing radiation "Sub-codes of all these main themes were determined, schemes were created and coded participant views were shown in a cross-table form, semi-structured questions and a qualitative scale were developed.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Comparison of the Radiation Absorption Properties of PbO doped ZrB2
           Glasses by using GATE-GEANT4 Monte Carlo Code and XCOM Program

    • Authors: Arzu COŞKUN; Betül ÇETİN, İbrahim YİĞİTOĞLU, Hüseyin TOPAKLI
      Abstract: The aim of this study is to investigate the gamma ray radiation absorption properties of ZrB2 (zirconium diboride), which is used in the nuclear industry, space industry, military industry and especially in the ceramic industry and determine the effect of PbO additive in the shielding. Also, the Geant4 Application Tomographic Emission monte carlo code will be tested for its usability in place of XCOM computer program with an appropriate geometry. Within this scope, the shielding properties of ZrB2, Pb0 and 50%ZrB2.50%Pb0 glasses at 511, 662, 1173, 1274 and 1332 keV gamma energies were calculated by the Geant4 Application Tomographic Emission monte carlo code and compared with the XCOM computer programme. The linear attenuation coefficient and half value layer were calculated by using the mass attenuation coefficient values obtained with the codes. In line with these results, it is possible to say that 50%PbO additive increases the shielding quality of ZrB2 glasses. On the other hand, the simulated Geant4 Application Tomographic Emission monte carlo code values were found to be compatible with XCOM.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Usability of Pine Sawdust and Calcite Together as Filler in Polyester
           Composites

    • Authors: İlyas KARTAL; Hilal SELİMOĞLU
      Abstract: Two different types of fillers are used in composites, natural and synthetic. Natural fillers are gaining popularity as an alternative to synthetic fillings due to low production cost, light weight, and abundance of renewable resources. Although thermoplastics are widely used as matrix material in natural fillers-filled composite materials, there are thermoset polymers such as epoxy and polyester. The most known and used natural-organic fillers are wood sawdust and fibres. Wood sawdust can be obtained easily and cheaply as a waste in furniture production and is generally used after appropriate sieving. In this study, general purpose polyester resin was preferred as matrix material. Calcite and pine wood sawdust used as fillers. Calcite is used as synthetic filler and pine wood sawdust is natural filler and can be found easily. Thus, the usability of natural and synthetic fillers together was investigated. Composite samples were prepared by pouring the mixture into an open Teflon mold. The physical properties of the samples such as tensile, impact, density and hardness were investigated. Images of broken surfaces were analysed by SEM. As a result of the study, it was evaluated that pine sawdust and calcite can be used together in polyester-based composite applications.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Radiation Safety For Operating Room Technicians

    • Authors: Halil SOYAL; Tülay ORTABAĞ
      Abstract: Radiation safety is an important consideration for operating room technicians, in procedures that involve the use of fluoroscopy or other imaging technologies that emit ionizing radiation. Radiation safety is essential to safeguard human health, minimize radiation exposure, optimize medical radiation use, protect the environment, and comply with regulatory standards. By implementing appropriate safety measures, radiation can be used safely and responsibly in various fields, balancing the benefits of radiation applications with the need for protection against potential harm. It is important for operating room technicians to adhere to radiation safety guidelines and best practices to protect themselves, their colleagues, and patients from unnecessary radiation exposure. Collaboration with radiation safety officers, radiation safety committees, and other relevant experts can help ensure a culture of safety and ongoing improvement in radiation safety practices. The aim of this article is to inform the operating room technicians about radiation, to keep their occupational exposure to a minimum is to help.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • The Effect of Fragment C of Tetanus Toxin on Memory Deficits in a Rat
           Model of Alzheimer’s Disease

    • Authors: Şeyma ÖZSOY; Elif Azize ÖZŞAHİN DELİBAŞ
      Abstract: The progression of Alzheimer's disease (AD) is connected to both neuronal elements and immunological mechanisms. Tetanus toxin C-terminal fragment (TTC) has neuroprotective properties. Our objective was to examine the influence of TTC on memory, hippocampal morphology, and inflammation in rats with a STZ-induced AD model. After general anesthesia rats, 3 mg/kg STZ was administered ICV to the right and left lateral ventricles of 5 μl of 12 rats. Six rats were received both lateral ventricules of 0.9% NaCl 5 µl ICV, and others were administered TTC (0.05 flocculation units) in 5 µl ICV one time. No drug was applied to the control group. On the 15th day, all groups underwent a passive avoidance learning (PAL) test, and then brain tissue was collected. Tumor necrosis factor-alpha (TNF-α) and interleukin 6 (IL-6) levels within the brain were assessed. Following this, neurons were quantified by employing Cresyl violet staining specifically within the hippocampal CA1 and CA3 regions. In the ICV-STZ group, the PAL latency time significantly reduced, TNF-α levels and IL-6 levels increased, and also the hippocampal CA1 and CA3 neuron numbers decreased. The application of TTC resulted in a significant decrease in the levels of TNF-α and IL-6. Furthermore, it played a role in mitigating the memory impairment caused by ICV-STZ by reducing cell death within the hippocampus. These results suggest that the neuroprotective and anti-inflammatory properties of TTC might have a significant impact on addressing neurodegenerative disorders such as Alzheimer's disease.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Method Validation and Measurement Uncertainty for the Determination of
           Ethanol in Whole Blood

    • Authors: Yeter EROL ÖZTÜRK
      Abstract: Alcohol intake is known to significantly affect driving ability and there is a relationship between Blood Alcohol Concentration (BAC) and the risk of road traffic accidents car accidents. Alcohol intake is known to significantly affect driving ability. Therefore, many countries define and monitor the legal BAC value for drivers. Customers or legal authorities require determining and reporting the measurement uncertainty in blood alcohol analysis from laboratories in recent years. In order to ensure the reliability and safety of the result, the method was validated and the measurement uncertainty was calculated. A rapid, selective and robust gas chromatography coupled with flame ionisation detection method was developed and validated for the quantitative determination of ethanol in whole blood. The method was validated for selectivity, matrix effect, recovery, and linearity, limit of detection (LOD), limit of quantification (LOQ), recovery, repeatability, reproducibility and robustness. The validation procedure was designed to be suitable for ISO 17025 accreditation. Uncertainty measurements were also determined for the validated method. LOD and LOQ were found 3.99 mg/dL and 4.30 mg/dL, respectively. The method showed good linearity in the range of 3.9 to 393.7 mg/dL ethanol with a correlation coefficient (r2 = 0.9999). The method provides fast, precise, simple, robust and unbiased results.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Shear Behaviour of RC Beams: A Numerical Study

    • Authors: Kağan SÖĞÜT
      Abstract: A two-dimensional (2D) nonlinear finite element (FE) model created for reinforced concrete (RC) beams is presented in this paper. The FE model was verified in order to perform further parametric studies on RC beams with and without existing steel shear links. The parameters were tension reinforcement ratio, concrete compression strength, and beam size. Moreover, the accuracy of “Turkish Standards 500: Requirements for design and construction of reinforced concrete structures (TS500)” in terms of predicting the total shear force capacity of RC beams was examined. The FE model properly captured the experimental load capacity, with a mean value of 1.04. The increase in overall shear force capacity caused by the increasing tension reinforcement ratio from 1.79 to 3.33% was 18.3% for RC beams with existing steel shear links, whereas it was 10.6% for RC beams without existing steel shear links. The total shear force capacities of RC beams with and without steel shear links increased once concrete compression was increased from 30 to 70 MPa. An increasing beam size resulted in a reduction in shear stress at failure of 33.8% and 32.7% for RC beams with and without shear links, respectively. TS500 design code gave conservative results in calculating the overall shear force capacity of RC beams.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Optimizing Infill Parameters for Improved Mechanical Performance and Cost
           Savings in Additive Manufacturing

    • Authors: Volkan ARIKAN
      Abstract: In this study, compression tests were performed on the samples produced with PLA filament with different infill parameters and infill densities by additive manufacturing method and their mechanical performances & static energy absorption capabilities were evaluated. According to the results obtained, it was determined that the samples with triangular and tri-hexagonal infill parameters performed better and it has been shown that time, material and energy can be saved without losing materials mechanical performance.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Emission and Lubrication Performance of Hazelnut Oil as A Lubricant

    • Authors: Arzu KEVEN; Cengiz ÖNER
      Abstract: The aim of this study is to search the tribological and emission performances of hazelnut oil as a lubricant in one cylinder two-stroke gasoline engine and simulation-testing machine. The tribological and emission performances of mineral oil and hazelnut oil as lubricant were compared. In the experiments, simulation-testing machine and one cylinder two-stroke gasoline engine were used to determine the tribological performance of these two lubricants. The wears on the surfaces of cylinder were analyzed to examine the lubricant performances. In addition to lubrication performance, exhaust emissions of the lubricants were also measured. To observe the effects of different kinds of cylinder surface materials, TiN, CrN and gray cast iron coated cylinder surfaces were used in simulation testing machine. The wear as well as the soot formation on the cylinder surfaces increased when hazelnut oil was used as the engine lubricant. However, hazelnut oil exhibited good lubrication properties in simulation testing machine. When hazelnut oil was used, CO and HC emissions increased while CO2 emission decreased.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • IoT Band: A Wearable Sensor System to Track Vital Data and Location of
           Missing or Earthquake Victims

    • Authors: Esma Nur SOYSAL; Havin GÜRKAN, Emrehan YAVŞAN
      Abstract: Natural disasters, especially earthquakes, have caused and still cause serious loss of life in our country. Since many of our cities are located on fault lines, earthquake or collapse risks threaten our lives. In this study, a wearable sensor and tracking system has been developed to prevent or minimize the loss of life after a possible earthquake. The presented system consists of a wristband prototype designed to instantly monitor the vital data and location of victims trapped under the rubble. The wristband prototype includes a GPS module, a temperature sensor and a pulse oximeter. While the vital data of the victim is monitored by the temperature sensor and pulse oximeter, the location information of the victim is received via GPS. The data read from these sensors via a controller is transferred to a display screen through a wireless communication module. A computer and a mobile application were developed as the display screen. A Wi-Fi module was preferred for wireless communication. As an alternative to the Wi-Fi module, a GSM module was added to the wristband prototype. Thus, the order and time of rescue interventions for people trapped under the rubble can be determined. The presented work can be used not only for collapse and earthquake victims but also for Alzheimer's patients or people with poor mental development thanks to the GSM module. In this case, the patient's vital data and location will be transmitted to the user's relatives.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Radiation Attitudes in Associate Degree Students

    • Authors: Nurdan KARPUZ
      Abstract: The radiation that has existed throughout human history is always present in our environment, in our bodies and in space. Radiation has been used in almost every aspect of medicine, science and industry since it was discovered. Technologies that use radiation make people's lives easier, and people's lives are saved through early detection and treatment of diseases, especially in medical applications. With rapidly evolving technology, medical staff are exposed to more radiation doses due to increased radiation use in medicine. Since life without radiation is unlikely, there needs to be a sufficient level of information about radiation to protect against the harmful effects of radiation. In universities, which constitute an important part of education and training, the better the radiation knowledge of the students in the field of health, which will shape the future, the better the transfer of radiation knowledge level to future generations and at the same time to the people they serve since these students will be the health personnel of the future. Health personnel should be able to protect themselves from the harmful effects of radiation, take the necessary precautions during diagnosis and treatment, and increase their level of knowledge in this regard. In this study, it was aimed to evaluate the level of awareness of health services vocational school students, who will be health personnel in the future, towards the concept of radiation and radiation protection.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Analysis of Factors Affecting Common Use of Generative Artificial
           Intelligence-Based Tools by Machine Learning Methods

    • Authors: Yasin KIRELLİ
      Abstract: Artificial Intelligence is a sub-branch of artificial intelligence used to produce new data or content. These methods can create recent examples in different categorical fields such as natural language processing, image processing, music, and video creation by using models from learning clusters with artificial intelligence (AI) tools in this field. AI tools that can solve real-world problems are also created using different methods apart from generative AI methods. With generative-based artificial intelligence tools, it can facilitate people's work in jobs that require creativity. However, they can offer the opportunity to build advanced models that learn from data with other artificial intelligence methods. In the study, the public dataset has been used. This dataset includes trending artificial intelligence tools, AI methods, and user scores. In this study the working area and user trend of the ai tools in the dataset and the effect of generative AI methods on the development of the tool are discussed. Random Forest and Naive Bayes algorithms from classification methods have been used to measure the impact and estimation. Several AI tools help solve real-life problems. Identifying what type of category is needed for AI tools and method selection are interlinked, and the research provides an overview of this connection.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
  • Personalized Intraoperative Radiotherapy Balloon Applicator Design and
           Production With 3D Printer

    • Authors: Öykü YÜZER; Betül ÖZER, Salih Enes ÖZDEL, Osman GÜNAY
      Abstract: Radiation is the energy released from matter. Radiation is divided into two according to its source: natural and artificial radiation. Artificial radiation is used in treatment methods in medicine. One of these treatment methods is brachytherapy. Brachytherapy treatment is applied by placing small radioactive sources inside the body and sending beams directly to the cancerous cell. The main thing to consider in brachytherapy treatment is the selection of the applicator. The applicator is the device that enters the patient's body cavity. In this study, based on the applicators currently used in the medical field, a patient-specific, biocompatible, sterilized, and reusable applicator will be created from PLA material by using a 3D printer.The applicator to be designed will consist of 2 parts: the intrauterine tube and the spherical tip. The spherical tips, which vary according to the size of the tumor, will be pressed to integrate with the tube part of the applicator. Thus, a patient-specific design will be realized by using the spherical tip suitable for the patient’s tumor region.As a result of the project, since the applicator will have spherical tips of different sizes, it completely covers the intrabody cavity of the patient. Thus, the movement of the applicator is limited, and dose distribution is prevented. The treatment process of the patient is improved.Another result is that the prototype applicator printed with PLA filament is produced at a very low cost. Thus, access to the applicator becomes easier and its use in the medical field increases.
      PubDate: Sat, 30 Sep 2023 00:00:00 +030
       
 
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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
Showing 1 - 200 of 265 Journals sorted alphabetically
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 19)
Acta Nova     Open Access   (Followers: 2)
Acta Scientifica Malaysia     Open Access   (Followers: 1)
Acta Scientifica Naturalis     Open Access   (Followers: 4)
Adıyaman University Journal of Science     Open Access  
Advanced Science     Open Access   (Followers: 16)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 8)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 5)
Advances in Research     Open Access  
Advances in Science and Technology     Full-text available via subscription   (Followers: 18)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 7)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 1)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 3)
Alfarama Journal of Basic & Applied Sciences     Open Access   (Followers: 12)
American Academic & Scholarly Research Journal     Open Access   (Followers: 4)
American Journal of Applied Sciences     Open Access   (Followers: 22)
American Journal of Humanities and Social Sciences     Open Access   (Followers: 13)
Anales del Instituto de la Patagonia     Open Access  
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 2)
Arab Journal of Basic and Applied Sciences     Open Access  
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 1)
Archives Internationales d'Histoire des Sciences     Partially Free   (Followers: 5)
Archives of Current Research International     Open Access  
ARPHA Conference Abstracts     Open Access   (Followers: 1)
ARPHA Proceedings     Open Access  
Asian Journal of Advanced Research and Reports     Open Access  
Asian Journal of Scientific Research     Open Access   (Followers: 2)
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 5)
Australian Field Ornithology     Full-text available via subscription   (Followers: 1)
Australian Journal of Social Issues     Hybrid Journal   (Followers: 6)
Bangladesh Journal of Scientific Research     Open Access  
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 1)
Berichte Zur Wissenschaftsgeschichte     Hybrid Journal   (Followers: 11)
Bilge International Journal of Science and Technology Research     Open Access  
Bioethics Research Notes     Full-text available via subscription   (Followers: 15)
BJHS Themes     Open Access   (Followers: 1)
Bulletin de la Société Royale des Sciences de Liège     Open Access  
Bulletin of the National Research Centre     Open Access  
Chain Reaction     Full-text available via subscription  
Ciencia Amazónica (Iquitos)     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencia Ergo Sum     Open Access  
Ciência ET Praxis     Open Access  
Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering     Open Access  
Comunicata Scientiae     Open Access  
Conference Papers in Science     Open Access  
Configurations     Full-text available via subscription   (Followers: 11)
COSMOS     Hybrid Journal   (Followers: 1)
Crea Ciencia Revista Científica     Open Access  
Current Issues in Criminal Justice     Hybrid Journal   (Followers: 14)
Current Research in Geoscience     Open Access   (Followers: 6)
Data     Open Access   (Followers: 4)
Dhaka University Journal of Science     Open Access  
Discover Sustainability     Open Access   (Followers: 5)
Einstein (São Paulo)     Open Access  
Ekaia : EHUko Zientzia eta Teknologia aldizkaria     Open Access  
Emergent Scientist     Open Access  
Enhancing Learning in the Social Sciences     Open Access   (Followers: 7)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entramado     Open Access  
Entre Ciencia e Ingeniería     Open Access  
Epiphany     Open Access   (Followers: 1)
Ethiopian Journal of Education and Sciences     Open Access   (Followers: 5)
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 4)
European Scientific Journal     Open Access   (Followers: 7)
Evidência - Ciência e Biotecnologia - Interdisciplinar     Open Access  
Exchanges : the Warwick Research Journal     Open Access   (Followers: 1)
Experimental Results     Open Access   (Followers: 2)
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access  
Fontanus     Open Access   (Followers: 1)
Forensic Science Policy & Management: An International Journal     Hybrid Journal   (Followers: 252)
Frontiers in Climate     Open Access   (Followers: 5)
Frontiers in Science     Open Access   (Followers: 1)
Fundamental Research     Open Access  
Futures & Foresight Science     Hybrid Journal   (Followers: 1)
Gaudium Sciendi     Open Access  
Ghana Studies     Full-text available via subscription   (Followers: 15)
Global Journal of Pure and Applied Sciences     Full-text available via subscription  
Globe, The     Full-text available via subscription   (Followers: 4)
HardwareX     Open Access  
Heidelberger Jahrbücher Online     Open Access  
Heliyon     Open Access   (Followers: 1)
History of Science and Technology     Open Access   (Followers: 6)
Hoosier Science Teacher     Open Access  
Indian Journal of History of Science     Hybrid Journal   (Followers: 3)
Instruments     Open Access  
Interciencia     Open Access  
International Annals of Science     Open Access  
International Journal of Advanced Multidisciplinary Research and Review     Open Access  
International Journal of Applied Science     Open Access  
International Journal of Engineering, Science and Technology     Open Access  
International Journal of Network Science     Hybrid Journal   (Followers: 3)
International Journal of Social Sciences and Management     Open Access   (Followers: 2)
International Journal of Technology Policy and Law     Hybrid Journal   (Followers: 10)
International Science and Technology Journal of Namibia     Open Access   (Followers: 2)
International Scientific and Vocational Studies Journal     Open Access  
Investiga : TEC     Open Access  
Investigación Joven     Open Access  
Investigacion y Ciencia     Open Access   (Followers: 1)
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
iScience     Open Access   (Followers: 2)
Issues in Science & Technology     Free   (Followers: 8)
Ithaca : Viaggio nella Scienza     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Jaunujų mokslininkų darbai     Open Access   (Followers: 3)
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription  
Journal of Chromatography & Separation Techniques     Open Access   (Followers: 9)
Journal of Advanced Research     Open Access   (Followers: 2)
Journal of Analytical Science & Technology     Open Access   (Followers: 5)
Journal of Applied Science and Technology     Full-text available via subscription   (Followers: 1)
Journal of Applied Sciences and Environmental Management     Open Access   (Followers: 1)
Journal of Big History     Open Access   (Followers: 4)
Journal of Composites Science     Open Access   (Followers: 4)
Journal of Diversity Management     Open Access   (Followers: 4)
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Institute of Science and Technology     Open Access  
Journal of King Saud University - Science     Open Access  
Journal of Mathematical and Fundamental Sciences     Open Access  
Journal of Negative and No Positive Results     Open Access  
Journal of Responsible Technology     Open Access  
Journal of Science and Technology     Open Access   (Followers: 2)
Journal of Science and Technology     Open Access   (Followers: 1)
Journal of Science and Technology (Ghana)     Open Access   (Followers: 3)
Journal of Science and Technology Policy Management     Hybrid Journal   (Followers: 1)
Journal of Science Foundation     Open Access   (Followers: 1)
Journal of Scientific Research and Reports     Open Access   (Followers: 1)
Journal of Shanghai Jiaotong University (Science)     Hybrid Journal  
Journal of Social Science Research     Open Access   (Followers: 2)
Journal of Taibah University for Science     Open Access  
Journal of the Ghana Science Association     Full-text available via subscription   (Followers: 3)
Journal of the History of Ideas     Full-text available via subscription   (Followers: 168)
Journal of the Indian Institute of Science     Hybrid Journal   (Followers: 4)
Journal of the Royal Society of New Zealand     Hybrid Journal   (Followers: 49)
Journal of the South Carolina Academy of Science     Open Access  
Journal of Unsolved Questions     Open Access  
Jurnal Sains Dasar     Open Access  
Jurnal Teknosains     Open Access  
Karaelmas Science and Engineering Journal     Open Access  
Karbala International Journal of Modern Science     Open Access  
Kennedy Institute of Ethics Journal     Full-text available via subscription   (Followers: 10)
Logo STI Science, Technology and Innovation     Open Access   (Followers: 14)
Malawi Journal of Science and Technology     Open Access   (Followers: 6)
Maskana     Open Access  
MethodsX     Open Access  
Mètode Science Studies Journal : Annual Review     Open Access  
Modern Applied Science     Open Access   (Followers: 1)
Momona Ethiopian Journal of Science     Open Access   (Followers: 5)
National Academy Science Letters     Hybrid Journal   (Followers: 3)
National Science Review     Hybrid Journal   (Followers: 1)
Natural Sciences     Open Access  
Natural Sciences Education     Hybrid Journal   (Followers: 1)
Naturen     Full-text available via subscription  
Nepal Journal of Science and Technology     Open Access  
Network Science     Hybrid Journal   (Followers: 4)
Nordic Journal of Science and Technology     Open Access   (Followers: 2)
Nordic Studies in Science Education     Open Access   (Followers: 3)
Nova     Open Access  
Open Conference Proceedings Journal     Open Access  
Open Journal of Applied Sciences     Open Access  
Orbis Cógnita : Revista Científica     Open Access   (Followers: 2)
Patterns     Open Access   (Followers: 9)
People and Nature     Open Access   (Followers: 4)
Población y Desarrollo - Argonautas y caminantes     Open Access  
Politique et Sociétés     Full-text available via subscription   (Followers: 1)
Portal de la Ciencia     Open Access  
Proceedings of the Indian National Science Academy     Full-text available via subscription   (Followers: 5)
Proceedings of the Linnean Society of New South Wales     Full-text available via subscription   (Followers: 2)
Proceedings of the Royal Society of Queensland, The     Full-text available via subscription  
QScience Connect     Open Access  
Quantum Science and Technology     Hybrid Journal   (Followers: 15)
Rafidain Journal of Science     Open Access  
Rehabilitation Research, Policy, and Education     Hybrid Journal   (Followers: 2)
Reportes Científicos de la FaCEN     Open Access  
Reports in Advances of Physical Sciences     Open Access  
Research Ideas and Outcomes     Open Access  
Research Integrity and Peer Review     Open Access  
Research Policy : X     Open Access   (Followers: 3)
Respuestas     Open Access  
Revista Bases de la Ciencia     Open Access  
Revista Cientifica Guillermo de Ockham     Open Access  
Revista Conhecimento Online     Open Access  
Revista Crítica de Ciências Sociais     Open Access  
Revista de Ciencia y Tecnología     Open Access  
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales     Open Access  
Revista de la Universidad del Zulia     Open Access  
Revista Politécnica     Open Access  
Revista Tecnológica     Open Access  
Revista UniVap     Open Access  
SAINSTIS     Open Access  
Sainteknol : Jurnal Sains dan Teknologi     Open Access  
Sci     Open Access  
Science     Full-text available via subscription   (Followers: 5080)
Science & Diplomacy     Free   (Followers: 3)
Science Advances     Free   (Followers: 44)
Science and Technology     Open Access   (Followers: 2)
Science Heritage Journal     Open Access  
Science World Journal     Open Access  
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
ScienceRise     Open Access  
Sciences du jeu     Open Access  

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Heriot-Watt University
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Email: journaltocs@hw.ac.uk
Tel: +00 44 (0)131 4513762
 


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