Publications by authors named "Sen Fatih"

Background: Owing to its high perishability, the market life of nectarine fruit is very short. Cold storage is a principal approach to limit post-harvest quality loss in nectarines. The objective of this research was to evaluate the impact of postharvest methyl jasmonate (MeJA), salicylic acid (SA) and 1-methylcyclopropene (1-MCP) on quality properties of nectarine fruit, specifically weight loss, firmness, phenolics and antioxidant activity, following cold storage and subsequent shelf life.

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Blackberry deteriorates rapidly after harvest due to its sensitive structure, limiting their storage time to about a week and resulting in significant economic losses. The study was conducted to determine the effects of salicylic acid applications on postharvest fruit quality in blackberries, the harvested fruit was immersed in salicylic acid solutions prepared at concentrations of 0.5, 1, and 1.

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Article Synopsis
  • Post-harvest losses result in significant food waste, making it essential to improve storage methods for fruits, such as using calcium chloride (CaCl) to extend their shelf life.
  • The study examined the effects of different concentrations of CaCl (2%, 4%, and 6%) on the quality of stored strawberries over 15 days, analyzing factors like weight loss, decay rate, and bioactive compounds.
  • Results showed that 6% CaCl treatment significantly reduced weight loss and decay, preserved bioactive compounds, and maintained the overall quality of strawberries better than the lower concentrations and the control group.
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Fuel cells, one of the clean energy sources, is quite remarkable for energy production. In this context, catalysts are needed for the electrochemical reactions of DMFCs (direct methanol fuel cells) to work efficiently. In this study, Pt and Pt@Ti-MOF (Pt@MIL-125) NPs (nanoparticles) catalysts were synthesized by chemical synthesis.

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Fluorescent glucose sensors often utilize nanotechnology to detect glucose in a sensitive and targeted manner. Nanoscale materials increase the sensitivity and efficiency of sensors by better understanding and managing the properties and interactions of the structure to be sensed. Nitrogen-doped carbon quantum dots (N-CQD), which work with the concept of fluorescence quenching or switching on because of specific processes in the presence of glucose, are one type of nanoscale material added to these sensors.

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In this study, trimetallic PtNiCo/MWCNT and PtNiCo catalysts were synthesized using a microwave method to reduce the amount of precious Pt. The prepared catalysts were characterized using XRD, TEM, and EDX mapping and their electrochemical performances for methanol oxidation were investigated. The results showed that the MWCNT-supported catalyst showed 2.

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Background: We aimed to investigate the clinical and angiographic characteristics of patients with acute coronary syndrome (ACS) who survived this devastating earthquake and were admitted to our hospital in Antakya/Türkiye.

Methods: We retrospectively examined the impact of the earthquake on the occurrences of acute coronary syndromes in Antakya/Türkiye. All 248 consecutive patients with ACS, also survivors of the earthquake in Antakya, were enrolled as the earthquake group.

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Article Synopsis
  • This study investigates the role of thyroid hormone levels, specifically triiodothyronine (fT3), in hospitalized patients in coronary intensive care units, aiming to understand their impact on cardiovascular health.
  • A total of 208 patients, primarily presenting with acute coronary syndrome and heart failure, were analyzed; results indicated that lower fT3 levels correlated with reduced left ventricular ejection fraction (LVEF) and longer hospital stays.
  • The findings suggest that monitoring fT3 levels could be important for assessing risks and developing treatment plans for heart failure patients.
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In this study, glucose was used as the carbon source to synthesize carbon quantum dots (CQDs) and also aimed to synthesize CQDs doped with heteroatoms such as sulphur, nitrogen, and boron to enhance their functionality. The obtained material has been characterized by several techniques. According to FL analysis, the highest peaks for CQD, N-CQD, B-CQD, and S-CQD were determined as 432 nm (ex 350), 425 (ex 350), 430 nm (ex 340 nm), and 436 nm (ex 340 nm), respectively.

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The BaBiO (BBO) perovskite oxide was prepared a sol-gel method with different concentrations of Bi nitrate and examined as a photocatalyst for RhB degradation under sunlight, and its antioxidant and antibacterial activities were examined. X-ray diffraction (XRD) indicated the formation of a BaBiO-BaCO (BBO-BCO) binary composite. For the degradation of RhB under solar radiation, high photocatalytic activity (73%) was observed.

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This study investigates the temperature-dependent frictional behavior of MoS in humid environments within the context of a long-standing debate over increased friction due to oxidation processes or molecular adsorption. By combining sliding friction experiments and density functional theory (DFT)-based first-principles simulations, it aims to clarify the role of water molecule adsorption in influencing frictional properties of MoS, addressing the challenge of identifying interfacial bonding behavior responsible for friction in such conditions. Sliding experiments revealed that magnetron-sputtered MoS exhibits a reduction in the coefficient of friction (COF) with an increase in temperature from 25 to 100 °C under 20 and 40% relative humidity.

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Immune-inflammatory biomarkers have been shown to be correlated with impaired coronary flow (ICF) in ST-segment elevation myocardial infarction. In this study, we assessed the relation between a novel comprehensive biomarker, pan-immune-inflammation value (PIV), and ICF after primary percutaneous coronary intervention (pPCI) in ST-segment elevation myocardial infarction. A total of 687 patients who underwent pPCI between 2019 and 2023 were retrospectively analyzed.

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Semiconducting single-walled carbon nanotubes (s-SWCNT) are structures that fluoresce in the near-infrared region. By coating SWCNT surfaces with polymeric materials such as single-chain DNA, changes in fluorescence emission occur in the presence of reagents. In this way, polymer-coated SWCNT structures allow them to be used as optical sensors for single molecule detection.

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Background: Chronic coronary syndrome (CCS) is one of the most life-restricting coronary artery diseases, and symptom relief is the main goal in CCS patients who suffer from angina.

Objectives: To assess the potential benefits of device-guided breathing in CCS patients with angina in this randomized, controlled, single-blinded study.

Methods: Fifty-one patients with CCS received device-guided breathing for 7 days/8 weeks.

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Hydrogen peroxide (HO) and heavy metals, which are among the wastes of the industrial sector, become a threat to living things and the environment above certain concentrations. Therefore, the detection of both HO and heavy metals with simple, low-cost, and fast analytical methods has gained great importance. The use of nanoparticles in colorimetric sensor technology for the detection of these analytes provides great advantages.

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As an alternative to antibiotics, nanoparticles (NPs) are increasingly being used for targeting bacteria. Nanotechnology holds great potential in the treatment of bacterial infections. Although the mechanisms of antibacterial activity of NPs are not fully understood, widely accepted explanations include oxidative stress induction, metal ion release, and non-oxidative processes.

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In this work, for the removal of azo dyes that cause environmental pollution, TiO-ZnO has been modified with graphitic carbon nitride (g-CN) to form an advanced hetero-linked photocatalyst. With this catalyst, photocatalytic hydrogen production and photodegradation activity against methylene orange (MO) and rhodamineB (RhB) dye removal were studied. The synthesized nanostructure was extensively characterized by several techniques such as XRD, TEM, UV-Vis and fluorescence spectrophotometer (PL) techniques.

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Article Synopsis
  • An innovative nanocomposite synthesized for hydrogen production from methanolysis on sodium borohydride, utilizing non-noble metal FeCo and Polyvinylpyrrolidone as the support material.
  • Characterization showed particle sizes of 2.59 nm (XRD) and 5.45 nm (TEM), while key catalytic performance metrics were established, including turnover frequency and activation energy of 3858.9 min and 31.93 kJ/mol, respectively.
  • The FeCo@PVP nanoparticles demonstrated 77% catalytic activity after 4 reuse cycles and achieved a high photocatalytic activity of 94% against MB azo dye under solar light irradiation.
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In this study, Silver-Platinum (Pt-Ag) bimetallic nanoparticles were synthesized by the biogenic reduction method using plant extracts. This reduction method offers a highly innovative model for obtaining nanostructures using fewer chemicals. According to this method, a structure with an ideal size of 2.

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In this study, titanium dioxide- Pluronics @F127/functionalized -multi walled carbon nanotubes (TiO-F127f-/MWCNT) nanocatalysts were prepared, characterized, and used in methylene blue (MB) degradation under ultrasonic conditions. The characterization studies were performed using TEM, SEM, and XRD analyses to reveal the morphological and chemical properties of TiO-F127/MWCNT nanocatalysts. To detect the optimum parameters for MB degradation using TiO-F127/f-MWCNT nanocatalysts, several experimental parameters were conducted at various conditions such as different temperatures, pH, catalyst amount, hydrogen peroxide (HO) concentration, and various reaction contents.

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The storage and shelf life of the fig, which has a sensitive fruit structure, is short, and this results in excessive economic losses. In a study carried out to contribute to the solution of this problem, the effect of postharvest putrescine application at different doses (0, 0.5, 1.

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In the study, a new bimetallic catalyst was synthesized for methanol oxidation using multi-walled carbon nanotube (MWCNT)-supported platinum-osmium (PtOs) nanoparticles (PtOs@MWCNT NPs). The morphological structures of the prepared NPs were examined using different techniques, such as scanning electron microscopy (SEM) and X-ray diffraction (XRD). The electrochemical characterization of the synthesized PtOs@MWCNT catalysts, such as chronoamperometry (CA), cyclic voltammetry (CV), scan rate (SR) analysis, cyclic catalytic test, and electrochemical surface area (ECSA) evaluation, were performed in an alkaline medium.

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