Publications by authors named "Buesra Colak"

This research focused on synthesizing a Schiff base (L) and its Co(II) and Pd(II) complexes under appropriate conditions to contribute to enhancing antioxidant activity. The ligand was synthesized by reacting methyl 2-amino-4-ethyl-5-methylthiophene-3-carboxylate with 5-bromo-2-hydroxybenzaldehyde. Various analytical techniques were employed to characterize the ligand and its resulting complexes, including microanalysis, H and C NMR spectroscopy, FTIR, electronic spectra, mass spectrometry, magnetic susceptibility, molar conductance, and thermo-gravimetric analysis.

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Raising of negative-index medium has been going hand-by-hand with the exploration of quasiplanar subwavelength resonators. Now they are widely used in modern microwave, terahertz, and infrared devices, as well as in advanced physics research. Effects of stacking of the arrays of subwavelength resonators in one few-layer metasurface is connected with the key problems of modern electrical engineering, applied physics, and beyond.

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Betanin, widely found in red beets, is a natural bioactive compound with health beneficial effects. Of recent interest is the impact of sepsis on the reproductive system. The present study first evaluated the effects of betanin on the changes in oxidative stress/antioxidant, inflammatory, ER stress/antiapoptotic responses and 8-OHdG parameters as well as TLR4 and NF-κB activity on LPS-induced testis damage.

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Background: Nasogastric tubes (NGTs) are used in children emergency departments (EDs) for gastric decompression, as well as for enteral nutrition and drug administration in hospitalised patients. Radiography is considered the gold standard for determining NGT location and may require repeat films until the tube is appropriately positioned. Point-of-care ultrasonography (POCUS) could potentially be useful in avoiding radiation in these children.

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Aim: The aim of the research was to investigate the predictive effect of nursing care quality perceived by inpatient children aged 9 to 12 on state anxiety levels.

Methods: The research was conducted with 201 inpatient children. Data were gathered using "The Scale for Evaluating the Quality of Care from Children's Point of View (psychosocial care, physical care, and information)" and "The State Anxiety Inventory for Children.

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In the field of control, many approaches have been used to control generators, where indirect vector control (IVC) is considered one of the most prominent of these approaches due to its many advantages. This approach has a fast response time (RT) and is quite easy to realize. However, its reliance on traditional controllers makes this approach less efficient and less effective if the system parameters change.

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Objective: The purpose of this research was to identify the specific prejudices that women in general surgery in Türkiye have to face in their workplace and academic careers. This was achieved by gathering the opinions of both genders on these issues and raising awareness of gender bias to promote a more inclusive environment for future generations of surgeons.

Material And Methods: A total of 202 people, 99 male and 103 female surgeons, participated in the survey.

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Background/objectives: CDK4/6 inhibitors have changed the landscape of hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative metastatic breast cancer (BC) management. It is essential to identify predictive and prognostic factors for the efficacy of CDK4/6 inhibitors. We aimed to investigate the differences in characteristics and outcomes of patients receiving first-line CDK4/6 inhibitors according to PgR status.

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Background Although pericardial calcification has been observed on chest CT scans in patients with cystic fibrosis (CF), its prevalence and characteristics have not been elucidated. Purpose To determine the prevalence and characteristics of pericardial calcification, and identify clinical variables associated with it, in adult patients with CF and to compare this prevalence with that in individuals without CF. Materials and Methods This was a retrospective, single-center case-control study including consecutive patients with CF who underwent chest CT between January 2021 and December 2022.

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Objective: This study investigated bee bread's (BB) protective and therapeutic effects on acetic acid-(AA)-induced gastric ulcers via oxidative stress, DNA damage, inflammation, and apoptosis.

Materials And Methods: Rats were administered saline-(1ml) or BB-(0.5g/kg/day;1ml) by oral gavage once daily for 10-day following 80% AA-induced chronic ulceration in treatment group.

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Introduction: Immunotherapies have increased the therapeutic options for patients with metastatic renal cell carcinoma (mRCC), but the absence of prognostic indicators remains unresolved. We assessed the potential association of BMI with the overall survival (OS) of patients treated with nivolumab.

Methods: We performed a retrospective study of 126 patients with histologically confirmed mRCC who began systemic ICI therapy between January 2016 and April 2022 were included.

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This paper presents a hybrid approach that combines a genetic algorithm (GA)-optimized type-2 fuzzy logic controller (T2FLC) with a fractional-order technique for enhanced control of a microgrid system. The T2FLC approach is employed to handle the inherent uncertainties in the microgrid due to fluctuating renewable energy inputs and varying loads. The GA optimizes the parameters of the designed FO-T2FLC approach, ensuring optimal performance under different operational conditions.

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Power quality is one of the most prominent challenges hindering the spread and use of direct power control (DPC) in the field of control, especially for induction generator (IG) control. The lower power quality in the case of using the DPC approach is due to the use of hysteresis comparators. This work proposes a new controller to overcome the drawbacks of the DPC approach, such as low robustness and high total harmonic distortion (THD) value of current for IG present in multi-rotor wind turbine (MRWT) based power system.

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Pancreatic mucinous cystic neoplasms (MCNs) are rare tumors predominantly identified in middle-aged females. Occurrences are extremely rare in children. We report a rare case of pancreatic MCN in an adolescent.

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The aim of this study was to determine the mold and ochratoxin A (OTA) contamination of tarhana, a traditional product widely consumed in Turkish cuisine. For this purpose, a total of 350 tarhana samples (homemade and industrially produced) were randomly collected from retail stores, markets, and bazaars in different regions of Türkiye and analyzed by means of LC-MS/MS for the occurrence of OTA. According to the results, OTA was detected in 36 of 150 (24%) industrially produced tarhana samples, with a concentration range of 0.

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Background: Small cell lung cancer (SCLC) is a lung malignancy with a poor prognosis and metastases at the time of diagnosis. There is limited experience using positron emission tomography/computed tomography (PET/CT) for SCLC diagnosis, staging, and follow-up.

Objective: Investigate the survival effect of primary tumor standardized uptake value max (SUVmax), SUV mean, metabolic tumor volume (MTV), total lesion glucose (TLG), bone marrow SUV (BM), and bone marrow to liver ratio (BLR) in SCLC.

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Hybrid energy systems (HESs) are integrated systems that have successfully addressed the problems of meeting the increasing demand for electrical power. Like all known power systems, the energy and stream quality are among the most important issues in addition to the durability of the HES. In this study, the battery-powered HES is presented, where this designed system consists of a wind system and a photovoltaic (PV) system.

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Background: Some preoperative and postoperative audiological outcomes may be associated with quality of life (QoL) in stapedotomy patients.

Aims: The aim of this study is to determine which frequencies and conduction pathways improve following this surgery and to assess their effects on QoL.

Material And Methods: Cases who underwent small fenestra stapedotomy were retrospectively reviewed.

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Purpose: Corneal transplantation is the most commonly performed transplant surgery. Medical students, doctors of the future, will educate the public about organ transplantation and raise public awareness on this issue. The first aim of this study is to evaluate the initial awareness of medical students about corneal transplantation, then to provide training to these students and finally to evaluate the change in their knowledge on this subject.

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Background: Pancreatic neoplasms are uncommon in children. We assessed the incidence, treatment, and survival of children with pancreatic malignancies, and determined factors associated with mortality using a large database.

Methods: The Surveillance, Epidemiology, and End Results 22 database (excluding IL and MA) was queried to identify pediatric patients diagnosed with pancreatic malignancies between 2000 and 2020.

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