WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14517/18

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Asymmetric Sinus Excision and Primary Closure With Additional Skin Excision Technique. Effect of Reduction of Dead-Space With Karydakis Modification
(Edizioni Luigi Pozzi, 2019) Kartal, Abdulcabbar; Yalcin, Metin; Oter, Volkan; Ferhatoglu, Murat Ferhat; Uzunkoy, Ali
OBJECTIVE: Pilonidal sinus is one of the common diseases, although there is still no gold standard of treatment available. The aim of this study was to reduce the residual dead-space volume with a modification following the standard Karydakis procedure. METHODS: A total of 100 patients were included in a randomised controlled trial, who were divided into two groups. Each group included 50 patients, and the patients in Group-I were treated with the new technique, whereas in Group-2, the standard Karydakis technique was performed. In the new technique, following total sinus excision, an advancement tissue flap was performed using additional skin excision, in order to reduce the dead-space volume. RESULTS: There was no significant difference in terms of sex, age, and sinus volume. Operation time was longer in first group (p=0,002). Seroma formation rate was higher in the secound group (p=0.036). There was no significant difference in terms of soft tissue infection (p=0.339) and wound dehiscence (p=0.218). The mean follow-up period was 30 months and no recurrence was observed in both groups. CONCLUSIONS: The results of the study suggest that this technique may be considered as an alternative surgical method in pilonidal sinus surgery.
Analysis of Morphological Parameters in Pelvic Radiography and Hip Mri : a Practical Reporting Recommendation
(Acta Medica Belgica, 2021) Cicek, Esin Derin; Cevik, Halime
Although numerous criteria have been proposed to define abnormal hip morphology, mostly used in the diagnosis of femoroacetabular impingement, it is not a practical approach to measure all of these parameters in all cases without clinical suspicion. In this study, our aim was to develop an evaluating and reporting standardization for routine hip examinations to define both hip morphology and impingement. A total of 108 patients with routine hip magnetic resonance imaging (MRI) and antero-posterior pelvic radiograph (PR) were included in this retrospective study. Alpha angle (AA), acetabular depth (AD), acetabular protrusion, acetabular anteversion, collodiaphyseal angle (CDA), lateral center-edge angle (LCEA) and Tonnis angle (TA) were measured. The differences and associations between these parameters were evaluated according to imaging modality or plane, and sex. Although a significant difference has been found between the axial AA and the coronal AA mean values measured on MRI, there was also a strong correlation. Coronal measurements were significantly higher. AA values measured in PR and coronal MRI were comparable. Males had higher AA in both planes as compared to females. There were no significant differences between CDA values in MRI and PR. There was a significant difference and a moderate correlation between AD values in MRI and PR. We suggest that routine reports should include a measurement of AA in two planes, and measurement of CDA in PR or MRI. Due to the difference in AD between MRI and radiography, LCEA or TA may represent better alternatives. Checking for a negative Tonnis sign would represent a practical approach.
Novel Tubb1 Gene Mutations in Turkish Patients With Macrothrombocytopenia
(Wiley-Blackwell, 2016) Ozkan, D. T.; Waheed, A. A.; Kandilci, A.; Akar, N.
Evidence for the Higgs Boson Decay To a Z Boson and a Photon at the Lhc
(Amer Physical Soc, 2024) Aad, G.; Abbott, B.; Abeling, K.; Abicht, N. J.; Abidi, S. H.; Aboulhorma, A.; Zhokin, A.
The first evidence for the Higgs boson decay to a Z boson and a photon is presented, with a statistical significance of 3.4 standard deviations. The result is derived from a combined analysis of the searches performed by the ATLAS and CMS Collaborations with proton -proton collision datasets collected at the CERN Large Hadron Collider (LHC) from 2015 to 2018. These correspond to integrated luminosities of around 140 fb-1 for each experiment, at a center -of -mass energy of 13 TeV. The measured signal yield is 2.2 +/- 0.7 times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.
Tolerability To Paracetamol and Preferential Cox-2 Inhibitors in Patients With Cross-Reactive Nonsteroidal Anti-Inflammatory Drugs Hypersensitivity
(Asia Pacific Assoc Allergy, Asthma & Clinical Immunology, 2020) Terzioglu, Kadriye; Sancar, Ozgur; Ekerbicer, Hasan Cetin; Ozturk, Raziye Tulumen; Epozturk, Kursat
Background: Acetylsalicylic acid/aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs) are widely used drugs that may cause hypersensitivity reactions in a substantial proportion of patients. Physicians ought to be aware of these situations. Objective: We aimed to present the clinical characteristics and rates of tolerability to cyclooxygenase (COX)-2 inhibitor analgesics in patients who had admitted due to multiple cross-reactive type of NSAID hypersensitivity. Methods: The files of the patients who had admitted with multiple NSAIDs-induced symptoms were investigated retrospectively. Age, sex, underlying diseases, clinical manifestation, skin test results, and drug provocation test results were analyzed. Results: In 105 patients with multiple cross-reactive type of NSAID hypersensitivity, we found the rate of cross-reactivity to any of the relatively safe alternatives including paracetamol, meloxicam, and nimesulide to be 16.1%. The rate of cross-reactivity to these relatively safe drugs was significantly higher in patients with a history of anaphylaxis induced by NSAID intake (p= 0.006). Conclusion: The diagnosis of COX-1-mediated multiple NSAID hypersensitivity can be often established with a detailed history. Although rare, severe hypersensitivity reactions may be observed in these patients. Undesired situations for both patients and physicians may be avoided by testing relatively safe paracetamol and COX-2 inhibitors in experienced centers.
One Year Follow-Up of Respiratory Health Outcomes in Adult Patients With Non-Cystic Fibrosis Bronchiectasis
(European Respiratory Soc Journals Ltd, 2018) Ceyhan, Berrin; Bekir, Melahat; Yildizeli, Sehnaz Olgun; Kocakaya, Derya
Analysis of Different Phase Change Materials (Pcms) and Wall Material in a Nano-Circular Space Thermal Energy Storage (Tes) System: a Molecular Dynamics Approach
(Elsevier France-Editions Scientifiques Medicales Elsevier, 2025) Cao, Cheng; Ali, Ali B. M.; Hussein, Zahraa Abed; Singh, Narinderjit Singh Sawaran; Abdullaeva, Barno; Zubair, Ahmad; Baghaei, Sh
Thermal energy storage (TES) play a vital role in overcoming the fluctuating nature of solar thermal energy. To study and understand the performance of these systems, using new techniques such as computer simulations can be useful. In this article, a specific circular nanochannel containing a phase change material (PCM) is introduced and its thermal and mass performance are investigated. By using two types of PCM and three wall metals (platinum, copper, and aluminum) the effects of changing several geometric and thermodynamic parameters are evaluated. In general, two different plans are proposed and parameters such as thermal conductivity, heat flux, charging, and discharging time are defined and evaluated. The obtained results show that the use of paraffin reduces the phase change time from 1.36 ns to 1.21 ns. Geometrical investigations also show that increasing the diameter ratio leads to a decrease in heat flux. Increasing the velocity of argon atoms in the inner tube also leads to an increase in the mobility of atoms and as a result improves the heat transfer rate. Using copper, the thermal conductivity is 54.3 % and 13.5 % higher than platinum and aluminum. The maximum heat flux for the two proposed cases is about 1500 and 1285 W/m2, respectively. Increasing the velocity of argon atoms from 0.01 & Aring;/ fs to 0.05 & Aring;/fs leads to a decrease in the phase change time from 1.12 ns to 1.15 ns. Regarding the type of PCM, paraffin performs better than the combination of water-hydrocarbon.
Egfr Mutation in Patients With Nsclc and Its Relationship Between Survival and Clinicopathological Features: an Update Analysis
(Elsevier Science inc, 2018) Ozturk, A.; Celik, S.; Kodaz, H.; Yildiz, I.; Ocak, A.; Hacibekiroglu, I.; Gumus, M.
The Test-Retest Reliability and Concurrent Validity of 360° Turn Test in Patients With Knee Osteoarthritis
(Taylor & Francis Ltd, 2024) Yarar, Haci Ahmet; Narin, Selnur; Erduran, Mehmet; Gurbanov, Iftikhar
PurposeThe aim of this study is to determine whether the 360 degrees turn test is a reliable and valid evaluator that can be used to assess dynamic balance in patients with early (radiographic grades I and II) and advanced (radiographic grades III and IV) knee osteoarthritis.Materials and MethodsThis study is a methodological research. For the test time and step count of 360 degrees turn test; test-retest reliability were determined by calculating the intraclass correlation coefficient and concurrent validity in patients with knee osteoarthritis was investigated by correlation with the timed up and go test time.ResultsThe final analysis was made on 117 participants. The intraclass correlation coefficient values for the test time and step count of 360 degrees turn test in patients with early knee osteoarthritis are 0.931 and 0.902, respectively, while they are 0.923 and 0.943 in patients with advanced knee osteoarthritis. The Pearson correlation coefficients between the time and step count of 360 degrees turn test and the test time of the timed up and go test in patients with early knee osteoarthritis, respectively; while they are 0.547 and 0.388, the correlation in patients with advanced knee osteoarthritis are 0.697 and 0.700, respectively (p < 0.01).ConclusionsThe 360 degrees turn test is a evaluator that has excellent test-retest reliability and moderate to strong concurrent validity in patients with both early and advanced knee osteoarthritis and can be used in the assessment of dynamic balance in this population.
Beta-Voltaic Nuclear Batteries - Review of Recent Developments, Challenges and Future Research Directions
(Elsevier, 2025) Agyekum, Ephraim Bonah
With its high energy density, extended service life, robust anti-interference capability, compact size, low weight, and ease of integration, beta-voltaic batteries which transform decay energy from radioisotope sources into electrical energy have gained interest from researchers over the years. However, there is currently no study that provides a comprehensive overview of studies on the topic using the systematic and bibliometric review approach. This study thus provides a comprehensive bibliometric and systematic review of beta-voltaic technology from 2000 to 2024, revealing an annual growth rate of 8.76 % in research publications. Key research themes include nuclear batteries, gallium nitride, silicon carbide, and nanotechnology, with emerging themes including radiation remediation and micro nuclear batteries for medical implants. Despite their high energy density and long-term reliability, beta-voltaic batteries face technical, environmental, and social challenges, including low power output, inefficiencies, radioactive decay management, limited availability of isotopes, high production costs, and public mistrust in nuclear technology.
Comparison of Posterior and Antero-Lateral Renal Tumors in Retroperitoneal Laparoscopic Partial Nephrectomy: a Propensity Score Matching Analysis
(Codon Publications, 2023) Anil, Hakan; Yildiz, Ali; Guzel, Ahmet; Akdemir, Serkan; Karamik, Kaan; Arslan, Murat
This study aimed to compare the antero-lateral and posterior localized renal masses in laparoscopic partial nephrectomy with the retroperitoneal approach in terms of operative, functional, and oncological outcomes. Patients who underwent retroperitoneal laparoscopic partial nephrec-tomy by a single surgeon between January 2013 and January 2021 were included in the study. A one-to-one propensity score matching (PSM) analysis was conducted to obtain two balanced groups. The patients were divided into two groups as posterior and antero-lateral according to the localization of the mass. A total of 239 patients were included in the PSM analysis, with 65 patients allocated to each group. The mean operative time was 79.2 & PLUSMN; 11.2 min in the posterior group, while it was 90.0 & PLUSMN; 11.6 min in the antero-lateral group (P < 0.001). Warm ischemia time was 15.9 & PLUSMN; 2.4 min in the posterior group and 18.6 & PLUSMN; 2.7 min in the antero-lateral group (P < 0.001). The median decrease in eGFR at 1 year was 4.8 (IQR, 2.9-6.9) mL/min in the posterior group and 5.0 (IQR, 2.8-11) mL/min in the antero-lateral group (P = 0.219). The warm isch-emia time and clamping technique were found to be significant factors for predicting eGFR change after surgery (13:0.693, 95% CI: 0.39-0.99, P < 0.001; 13:6.43, 95% CI: 1.1-11.7, P = 0.017, respectively). We report that retroperitoneal laparoscopic partial nephrectomy provided longer warm ischemia and operative time for antero-lateral renal masses than posterior masses. However, long-term oncological and functional results were similar for both localizations.
Comparison of Three Different Modalities for the Treatment of Bladder Calculi by Size
(Sage Publications Ltd, 2022) Yildiz, Ali; Anil, Hakan; Erol, Ibrahim; Karamik, Kaan; Ercil, Hakan
Purpose: Treatment recommendations for kidney or ureteral stones are based on stone size; however, this is uncertain for bladder stones. This study aims to determine the best approach to bladder stones based on their size. Materials and methods: We retrospectively analyzed 401 patients with bladder stones. Patients were divided into three different groups according to stone size (11-20 mm, 21-30 mm, 31-40 mm as groups 1, 2, and 3 respectively). Patients had transurethral cystolithotripsy (TUCL), percutaneous cystolithotripsy (PCCL), and open cystolithotomy (OCL) performed. Results: Stone fragments were removed completely in all patients. When catheter time, postoperative stay, and hematocrit decrease values were compared, the results were significantly higher for OCL in all three groups (p: 0.001). When the relationship between stone sizes and operation time is evaluated, TUCL had shorter operation times (34.1 +/- 10.6 min) in group 1. However, TUCL had longer operation times in group 2 and group 3 compared to OCL and PCCL. Conclusion: TUCL may be preferable due to better postoperative outcomes and shorter operative time for <= 2 cm stones. As the stone size increases, PCCL is more favorable in terms of operation time.
Thermal Management in a Phase Change Material-Based Microchannel Heat Sink Manifold System for Cooling Electronic Boards
(Elsevier, 2025) Ali, Ali B. M.; Alhamdi, Sabah F. H.; Al-Azawii, Mohammad M. S.; Singh, Narinderjit Singh Sawaran; Fazilati, Mohammad Ali; Salahshour, Soheil; Eftekhari, S. Ali
The growth of technology and the development of electronic devices made the need for efficient thermal management. By the ability of latent thermal energy storage, the application of phase change materials (PCMs) for cooling electronic boards has been investigated. The heat sink is an air-cooled micro heat sink cooling system (MHCS) with the possibility of embedding the PCM board. A type of metal-based paraffin is the PCM and free and forced modes of convective cooling studied numerically. Five input heat fluxes and three Reynolds (Re) numbers were investigated and the system performance was analyzed. The results show the significant influence of PCM on the control of the EC temperature; the reduction of heat sink temperature by 72 % and 78 % in natural and forced convection modes respectively, are the results of employing PCM in MHCS. It was shown that the best result of PCM employment in forced convection mode is at the lowest Re number. Furthermore, the Re number increase has the best effect on cooling efficiency at the highest heat flux. The results of this study could help in justifying the application of PCM from technical and economic viewpoints.
Investigating the Nexus Between Radiolysis Using Spent Nuclear Fuel and Hydrogen Production, With Environmental Safety Considerations - a Literature Review
(Elsevier Science Sa, 2025) Agyekum, Ephraim Bonah; Odoi-Yorke, Flavio; Abdullah, Mustafa; Chowdhury, Prangon
Given the detrimental consequences of climate change on the environment, hydrogen appears to be one of the solutions to possible decarbonization. Although it is a potential option, the subject of hydrogen production utilizing nuclear spent fuel (SNF) through water radiolysis has not received much attention to explore its potential use for large-scale hydrogen production. This review, therefore, presents an overview of research work on the use of SNF's ionizing radiation for the production of hydrogen and its potential impact on environmental safety. This paper investigates the advantages and difficulties of hydrogen generation in SNF storage system by utilizing a bibliometric and systematic review technique to analyse previous research works. The research themes were classified into motor, niche, emerging/declining, and basic themes. Some important themes that were found to be central to the topic included radiation shielding, hydrogen production, and environmental sustainability; life cycle assessment; renewable energy integration; nuclear waste management; hydrogen storage; and modular reactors. The study identified some potential research gaps and provided some recommendations for future research. This includes the improvement in the hydrogen detection systems, hydrogen collection and ventilation, containment of radioactive isotopes, understanding radiolysis impacts, and the development of purification and storage methods for hydrogen from spent nuclear fuel. The outcome of this study is expected to shape future research on the subject matter and serve as the foundation for deeper understanding of radiolysis for commercial-scale hydrogen production.
Exploring Task Completion Times and Text Performance in Pedestrians in Single and Dual-Tasking: Comparative Analysis of Laboratory and Outdoor Environments
(Sage Publications inc, 2024) Girgin, Nuray; Okudan, Begum; Celebi, Sadik Emre; Dundar, Selim
Background: Increased cell phone use causes individuals to divide their attentional resources between dual tasks in daily life. It is emphasized that this divided attention negatively affects task performance and makes pedestrian cell phone use an increasing safety concern. There is a lack of research on how dual tasks involving cell phone use affect pedestrian movements in laboratory and real-world settings and the time saved by text messaging while walking. Object & imath;ve: The main purpose of this study is to investigate how dual-tasking affects pedestrians by analyzing task completion time and texting performance, as well as investigating potential gender differences. Methods: 119 students were included in the study. Expanded-Timed Up and Go Test was applied as a single task 1. As a single task 2; text messaging was used on a mobile phone. Dual-task was defined as performing both tasks simultaneously. All evaluations were recorded both in the laboratory and outdoor environment. Results: Between all parameters, task completion times showed a significant difference in favor of dual-task in both environments (p <= 0.05). There was no significant difference in texting performance when comparing the results of two environments (p >= 0.05). Performing texting and walking tasks simultaneously resulted in approximately 43-45% time savings. Conclus & imath;ons: However, dual-task increases events such as falling or hitting other pedestrians. We recommend that pedestrians do not endanger their health and the health of other pedestrians to save more or less time.
A Nonlinear Mathematical Model To Describe the Transmission Dynamics of the Citrus Canker Epidemic
(Accscience Publishing, 2025) Kumar, Pushpendra
In this article, a mathematical model is proposed to define the transmission dynamics of one of the most dangerous plant diseases, citrus canker, by using integer and fractional derivatives. For the fractional-order generalisation, the well-known Caputo fractional derivative is used with the singular-type kernel. The basic features of the proposed integer-and fractional-order models are defined by using well-known mathematical concepts. The proposed model is numerically solved by using the Chebyshev spectral collocation scheme. Some graphical justifications are also given to visualise the disease transmission in the population of citrus plants over time. This research study contains the first non-linear mathematical model of citrus canker transmission, which is the main novelty of this article.
Search for Higgs Boson Pair Production in the B(b)over-Bar W+w- Decay Mode in Proton-Proton Collisions at √s=13 Tev
(Springer, 2024) Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Zhokin, A.
A search for Higgs boson pair (HH) production with one Higgs boson decaying to two bottom quarks and the other to two W bosons are presented. The search is done using proton-proton collisions data at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 138 fb(-1) recorded by the CMS detector at the LHC from 2016 to 2018. The final states considered include at least one leptonically decaying W boson. No evidence for the presence of a signal is observed and corresponding upper limits on the HH production cross section are derived. The limit on the inclusive cross section of the nonresonant HH production, assuming that the distributions of kinematic observables are as expected in the standard model (SM), is observed (expected) to be 14 (18) times the value predicted by the SM, at 95% confidence level. The limits on the cross section are also presented as functions of various Higgs boson coupling modifiers, and anomalous Higgs boson coupling scenarios. In addition, limits are set on the resonant HH production via spin-0 and spin-2 resonances within the mass range 250-900 GeV.
Test of Lepton Flavor Universality in B± → K± Μ+μ- and B± → K± E+ E- Decays in Proton-Proton Collisions at √s=13 Tev
(Iop Publishing Ltd, 2024) Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Zhokin, A.
A test of lepton flavor universality in B-+/- -> K +/- mu(+) mu(-) and B-+/- -> (K)+/- e(+) e(-) decays, as well as a measurement of differential and integrated branching fractions of a nonresonant B-+/- -> K-+/- mu(+)mu(-) decay are presented. The analysis is made possible by a dedicated data set of proton-proton collisions at root s = 13 TeV recorded in 2018, by the CMS experiment at the LHC, using a special high-rate data stream designed for collecting about 10 billion unbiased b hadron decays. The ratio of the branching fractions B(B-+/- -> K-+/- mu(+) mu(-)) to B(B-+/- -> K-+/- e(+) e(-)) is determined from the measured double ratio R(K) of these decays to the respective branching fractions of the B-+/- -> J/psi K-+/- with J/psi -> mu(+)mu(-) and e(+) e(-) decays, which allow for significant cancellation of systematic uncertainties. The ratio R(K) is measured in the range 1.1 < q(2) < 6.0 GeV2, where q is the invariant mass of the lepton pair, and is found to be R(K) = 0.78(-0.23)(+0.47), in agreement with the standard model expectation R(K) approximate to 1. This measurement is limited by the statistical precision of the electron channel. The integrated branching fraction in the same q(2) range, B(B-+/- -> K-+/- mu(+) mu(-)) = (12.42 +/- 0.68) x 10(-8), is consistent with the present world-average value and has a comparable precision.
Measurement of the Production Cross Section of a Higgs Boson With Large Transverse Momentum in Its Decays To a Pair of Τ Leptons in Proton-Proton Collisions at √s=13 Tev
(Elsevier, 2024) Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Zhokin, A.
A measurement of the production cross section of a Higgs boson with transverse momentum greater than 250 GeV is presented where the Higgs boson decays to a pair of tau leptons. It is based on proton-proton collision data collected by the CMS experiment at the CERN LHC at a center-of-mass energy of 13 TeV. The data sample corresponds to an integrated luminosity of 138 fb(-1). Because of the large transverse momentum of the Higgs boson the tau leptons from its decays are boosted and produced spatially close, with their decay products overlapping. Therefore, a dedicated algorithm was developed to reconstruct and identify them. The observed (expected) significance of the measured signal with respect to the standard model background-only hypothesis is 3.5 (2.2) standard deviations. The product of the production cross section and branching fraction is measured to be 1.64(-0.54)(+0.68) times the standard model expectation. The fiducial differential production cross section is also measured as functions of the Higgs boson and leading jet transverse momenta. This measurement extends the probed large-transverse-momentum region in the tau tau final state beyond 600 GeV.
Search for Heavy Neutral Leptons in Final States With Electrons, Muons, and Hadronically Decaying Tau Leptons in Proton-Proton Collisions at √s=13 Tev
(Springer, 2024) Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Zhokin, A.
A search for heavy neutral leptons (HNLs) of Majorana or Dirac type using proton-proton collision data at root s = 13TeV= 13 TeV is presented. The data were collected by the CMS experiment at the CERN LHC and correspond to an integrated luminosity of 138 fb(-1). Events with three charged leptons (electrons, muons, and hadronically decaying tau leptons) are selected, corresponding to HNL production in association with a charged lepton and decay of the HNL to two charged leptons and a standard model (SM) neutrino. The search is performed for HNL masses between 10 GeV and 1.5 TeV. No evidence for an HNL signal is observed in data. Upper limits at 95% confidence level are found for the squared coupling strength of the HNL to SM neutrinos, considering exclusive coupling of the HNL to a single SM neutrino generation, for both Majorana and Dirac HNLs. The limits exceed previously achieved experimental constraints for a wide range of HNL masses, and the limits on tau neutrino coupling scenarios with HNL masses above the W boson mass are presented for the first time.

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