DSpace Arşivi :: Ana Sayfa

İstanbul Gelişim Üniversitesi Kurumsal Açık Erişim Arşivi

DSpace@Gelişim, İstanbul Gelişim Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve yayınların etkisini artırmak için telif haklarına uygun olarak Açık Erişime sunar.

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A Qualitative Study on Neonatal Intensive Care Nurses’ Experiences of Neonatal Death
(Lippincott Williams and Wilkins Ltd., 2025) Kaya Meral, Deniz; Çalışkan, Behice Belkıs; Çekiç, Yasemin; Küçük Öztürk, Gülhan; Bağ, Beyhan
Background: Grief can pose significant challenges in nurses’ lives, impacting both their personal well-being and work performance. Purpose: The aim was to examine neonatal intensive care nurses’ (NICU) experiences with neonatal death. Methods: This study used a qualitative, phenomenological study design. The study group consisted of 17 nurses in the NICU. Data were collected online via Zoom using a semi-structured interview form and analyzed through a content analysis. The study was reported in line with the COREQ (Consolidated Criteria for Reporting Qualitative Research) checklist. Results: Two main themes and five sub-themes emerged. (1) “Grief” conveyed that nurses developed an empathetic bond with the newborn and family through their interactions during the care process, that confronting the empty incubator after the newborn’s loss evoked profound and complex emotions, and that they sometimes had to maintain a delicate balance on ice to navigate their emotional intensity. (2) “Transformation” illustrated how grief was reflected in nurses’ lives, influencing specific roles they assumed, and how they frequently experienced a deep need for contact following the loss of a baby. Implications for Practice and Research: To support the grieving process, structural interventions such as debriefings, reflective sessions, group-based psychosocial resilience workshops, and supervision should be promoted, along with flexible rest periods that allow nurses who need solitude to recuperate. Understanding the impact of newborn loss on nurses’ lives may also guide the development of appropriate support interventions.
Effect of Basaltic Pumice Powder on the Mechanical and Thermal Resistance Properties of Sustainable Alkali-Activated Mortars
(Multidisciplinary Digital Publishing Institute (MDPI), 2025) Al-Antaki, Taha Salah Wahhab; Niş, Anıl
In the research, the effect of basaltic pumice powder on the mechanical and thermal resistance properties of alkali-activated mortars (AAM) was studied. The class F fly ash, basaltic pumice powder (BPP), and ground granulated blast furnace slag were utilized as sustainable binder materials. The BPP was incorporated instead of fly ash and slag at concentrations of 10, 20, 30, 40, and 50%. In addition, the effects of different sodium hydroxide (NaOH) molarities (8, 12, 16 M) were investigated on the thermal resistance properties. The influence of curing time and its effects on different elevated temperatures (200, 400, and 600 ◦C) were also studied together at 7, 28, and 56 days on the AAMs. Flexural strength, compressive strength, weight change, and ultrasonic pulse velocity tests were carried out at the macro-scale. The microstructures of the AAM samples were analyzed using SEM and EDX spectroscopy. The results showed that dissolution of basaltic pumice particles requires a longer curing time. The 50% pumice-incorporated 8 M samples at 7 d exhibited the worst, whereas 16 M samples without pumice at 56 d performed the best in terms of mechanical strength and thermal durability. The optimal formulation for the best elevated temperature resistance is the 30% BPP and 16 M NaOH molarity.
Structural, mechanical and biomedical impacts of defects in Cu/ Mg Co-doped ZnO nanoparticles
(Elsevier Ltd, 2025) Şentürk, Kenan
Zn0.99-xCu0.01MgxO (x = 0–0.05) nanoparticles were synthesized by a sol–gel route and examined to relate doping-induced lattice defects to biocompatibility for prospective biomedical use. X-ray diffraction confirmed single-phase wurtzite with no secondary phases, while Williamson–Hall models provided crystallite size and lattice microstrain/stress, separating strain from size effects. Photoluminescence (UV–visible) showed an Mg-dependent defect redistribution suppression of the green band (VO) with concomitant changes in Zni, VZn, and Oi centers. SEM/EDS verified the expected composition and quasi-spherical agglomerated morphology. Hemolysis assays on human erythrocytes revealed a monotonic decrease in lysis with increasing Mg; samples with x ≥ 0.04 were non-hemolytic at 1.0 mg/mL (ISO< 5 %). Overall, Mg-enabled defect passivation particularly VO suppression correlates with improved blood compatibility, indicating that Cu/Mg codoping is a practical lever to tailor ZnO nanoparticles for blood-contacting coatings, sensors, and implant interfaces.
Effects of the Paris Agreement on new energy investments: Do energy risks play a role? Evidence from (multivariate) time-varying quantile regression
(Elsevier Ltd, 2025) Özkan, Oktay; Olasehinde-Williams, Godwin; Olanipekun, Ifedolapo Olabisi
In this study, we examine the dynamic and heterogeneous impact of the Paris Agreement on new energy investments across four key sectors: clean energy, clean technology, smart grids, and electric vehicles while controlling for the effect of energy risks. Utilizing advanced time-varying quantile regression (TVQR) and multivariate time-varying quantile regression (m-TVQR) techniques, the analysis captures how the influence of global climate policy has evolved overtime and across the distribution of investment outcomes between December 30, 2016 and November 8, 2024. Results reveal that the Paris Agreement’s effect is far from uniform; it varies significantly across time, investment scale, and sectoral focus. Notably, the influence intensified in the post-2020 period, coinciding with the COVID-19 green recovery push, but also displayed volatility in response to geopolitical shocks such as the Russo-Ukraine war. The m-TVQR model, which accounts for exogenous energy risks, outperforms the standard TVQR by offering sharper and more policy-relevant insights. Overall, while the Paris Agreement significantly influenced all the measures of new investment, clean energy and technology investments were not as responsive to policy signals as smart grids and electric vehicles. These findings underscore the Paris Agreement’s critical role as both a regulatory and market-shaping force in the global energy transition. The study contributes to the growing empirical literature on climate policy effectiveness and offers practical recommendations for policymakers seeking to align national investment flows with international climate commitments.
Istanbul Gelisim University Faculty of Health Sciences: Monthly Events and News Bulletin (Volume: 6, Issue: 63, March 2026)
(İstanbul Gelişim Üniversitesi / Istanbul Gelisim University, 2026) Istanbul Gelisim University Faculty of Health Sciences
IGU Climbs in World Rankings: A Notable Achievement in Webometrics 2026 The Webometrics World University Rankings, which evaluate universities on the basis of academic performance, scientific output, digital visibility, and open-access policies, have been announced. Istanbul Gelisim University (IGU) posted a standout performance in the 2026 results of this ranking, which reflects higher education institutions’ standing on a global scale. In line with its “Research University” vision, IGU placed 1,364th in the world rankings, 28th in Türkiye, and 4th among foundation universities.