A rare example of the in situ formation of palladium nanoparticles: The emergence of catalytically active palladium nanoparticles from Pd (II) phosphine complexes in the Suzuki–Miyaura coupling reaction
Altan, Orhan
Suzuki–Miyaura coupling (SMC) reactions are one of the most promising routes for carbon–carbon bond formation. It is believed that metal complexes, particularly palladium complexes, are the most effective catalysts for this purpose. However, the catalysis nature whether it is homogenous or heterogeneous is under debate. It is commonly believed that a homogenous catalysis pathway is responsible for the catalytic activity when the phosphine ligands are present in the structure due to the strong phosphorus-metal interactions. In this study, Pd (II) complexes of phosphino-benzaldoxime ligands were synthesized, characterized, and tested in SMC reactions. Interestingly, it was found that the catalytic activity increased by 11 times when the amount of catalyst was reduced by 10-fold and increased...
Evidence‐Based Treatment Ladder for Chronic Prostatitis/Chronic Pelvic Pain
BAŞARANOĞLU,MERT | AKBAY,ERDEM
ABSTRACT Objective: Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) affects 2%–10% of men worldwide, yet lacks stan dardized treatment algorithms. This study aimed to establish a definitive treatment hierarchy by comparing four therapeutic modalities: alpha‐blocker monotherapy, alpha‐blocker plus antibiotic combination, alpha‐blocker plus saw palmetto combi nation, and transurethral resection of prostate (TUR) surgery. Materials and Methods: This retrospective comparative cohort study analyzed 200 adult males with CP/CPPS (50 patients per group) treated at a single academic center between October 2023 and August 2025. Inclusion criteria comprised NIH Chronic Prostatitis Symptom Index (NIH‐CPSI) total score ≥ 10 and pain score ≥ 4, with excluded bacterial infection. Pri...
The effect of repeated video-training session on metered doseinhaler skills among individuals with COPD: Prospective randomised controlled study
Ebru Yıldız | Diğdem Lafçı | Aslı Eker
Objective This study was undertaken to assess the effect of repeated video-training sessions on the adequacy of metered-dose inhaler (MDI) among individuals with COPD. Background MDI devices facilitate the use of inhalation drugs in COPD patients and have become ever more important over the years. However, this device requires a certain level of hand-to-mouth coordination and cognitive ability. Since it has a high risk of application errors, training in its use is important to treatment success. Design Randomised controlled trial. Methods This study was carried out from 1 February to 1 July 2017 with the participation of 40 COPD patients. The data were collected using a ‘Patient Information Request Form’ and an ‘MDI Skill Evaluation Form’. CONSORT checklist was used to report ...
Palladium(II) complexes with aminomethylphosphine ligands as catalysts for the heck reaction
Mustafa Kemal Yılmaz
New, aminomethyldiphosphine(P C N) ligands, ((C6 H5 ) 2 PCH2 ) 2 NR (R = C6 H3(CH3 )(OH) (1a), C6 H4 OC6 H5 (1b), C6 H4 SC6 H5 )(1c)) and their Pd(II) complexes have been syn-thesized and characterized. These complexes werefound to be efficient catalysts in the Heck reaction ofactivated and deactivated aryl halide with a varietyof olefins.
Assessing the Effectiveness of UAV Photogrammetry, Terrestrial Laser Scanning and iPad LiDAR for Complex Cultural Heritage Sites Documentation and WEB-Based VR Visualization
Ulvi, Ali | yiğit, Abdurahman Yasin
Avdalaz Castle, carved by the Phrygians around the 2nd–3rd century bc in Afyonkarahisar, western Türkiye, and later reused during the Roman and Byzantine periods, represents one of the earliest known multi-storey rock-cut settlements in Anatolia. Beyond its architectural uniqueness, the site holds exceptional cultural and historical importance for understanding early urban dwelling patterns in central Anatolia. However, its irregular geometries, multilevel interior chambers and limited accessibility pose significant challenges for accurate digital recording and long-term preservation. To address these challenges, this study undertakes a comparative assessment of UAV photogrammetry, terrestrial laser scanning (TLS) and iPad LiDAR scanning (iLS). UAV photogrammetry enabled rapid coverage of ...
The Struggle for Syria: Strategic Rivalry and the Risks of Escalation
Sarı, Buğra | Kırışık, Avnihan
This article investigates the rivalry between Turkey and Israel over Syria, which has intensified since the ouster of Bashar al-Assad in December 2024. The two states have pursued conflicting security objectives, becoming principal actors in Syria's shifting political landscape. Ankara seeks to combat groups affiliated with the outlawed Kurdistan Workers’ Party, build up a friendly regime in Damascus, and establish a lasting military presence. By contrast, Israel aims to secure its northern border by creating a buffer zone against the new Islamist government and targeting Iran-linked infrastructure. These conflicting strategies have raised the risk of proxy violence or even direct confrontation, especially in key areas like Quneitra, near the Golan Heights, and Druze-inhabited areas i...
Prone position applied to COVID‐19 patients: Systematic review–meta‐analysis
Kaplan Serin Emine | Yıldız Karadeniz Ebru
Background Position change and interventions to increase lung capacity should be considered in mechanically ventilated patients. The most effective of these is the prone position. Aim This systematic review and meta-analysis aimed to determine the effects of the prone position on respiratory parameters and outcomes and to guide nurses working in the intensive care unit. Study Design and Methods This systematic review-meta-analysis was conducted in accordance with the Preferred Reporting in Systematic Reviews and Meta-Analyses guideline. ScienceDirect, CINAHL, Academic Search Complete (EBSCOhost), MEDLINE, EMBASE, Web of Science, Cochrane and PubMed databases were searched between January 2022 and January 2023 to access studies related to prone position in COVID-19 patients. Res...
Deep Learning-Based Palm Tree Detection for Urban Green Space Monitoring Using High-Resolution UAV Imagery
Yiğit, Abdurahman Yasin
Urban green space management is essential for sustainable urban planning, requiring accurate and efficient tree detection methods. This study compares three deep learning models—YOLOv11, faster region-based convolutional neural network (R-CNN), and DeepForest—for palm tree detection in an urban environment using high-resolution unmanned aerial vehicle (UAV) imagery. A UAV-based photogrammetric workflow was implemented, generating georeferenced orthomosaic maps to serve as the primary dataset. The models were assessed based on accuracy, processing speed, and suitability for urban vegetation mapping. YOLOv11 outperformed the other models, achieving an overall detection accuracy of 94.2% with an intersection over union (IoU) of 88.6%, making it the most suitable model for large-scale urban tr...
Nurses' views and applications on palliative care
Diğdem Lafci | Ebru Yildiz
Purpose: This study was carried out descriptively to determine the view and applications about pallative care of nurses working in a university hospital. Design and Methods: The data were collected with the questionnaire form: “Individual Information Form” and “Views and Appllications on Palliative Care,” created by the researchers in line with the literature. Findings: A total of 96.6% of the nurses evaluated the scope of palliative care as pain relief, and the most common difficulties in care were identified as bad news (88.1%). In all, 22.0% of the nurses talked to the patient and their family about death. Practice Implications: It is thought that the majority of nurses are not trained in palliative care and their opinions about palliative care are affected by this situation.
Nurses' views and applications on palliative care
Lafci, Diğdem | YILDIZ, Ebru
Purpose: This study was carried out descriptively to determine the view and applications about pallative care of nurses working in a university hospital. Design and Methods: The data were collected with the questionnaire form: “Individual Information Form” and “Views and Appllications on Palliative Care,” created by the researchers in line with the literature. Findings: A total of 96.6% of the nurses evaluated the scope of palliative care as pain relief, and the most common difficulties in care were identified as bad news (88.1%). In all, 22.0% of the nurses talked to the patient and their family about death. Practice Implications: It is thought that the majority of nurses are not trained in palliative care and their opinions about palliative care are affected by this situation
Assessing the Effectiveness of UAV Photogrammetry, Terrestrial Laser Scanning and iPad LiDAR for Complex Cultural Heritage Sites Documentation and WEB-Based VR Visualization
Yiğit, Abdurahman Yasin | Ulvi, Ali
Avdalaz Castle, carved by the Phrygians around the 2nd–3rd century bc in Afyonkarahisar, western Türkiye, and later reused during the Roman and Byzantine periods, represents one of the earliest known multi-storey rock-cut settlements in Anatolia. Beyond its architectural uniqueness, the site holds exceptional cultural and historical importance for understanding early urban dwelling patterns in central Anatolia. However, its irregular geometries, multilevel interior chambers and limited accessibility pose significant challenges for accurate digital recording and long-term preservation. To address these challenges, this study undertakes a comparative assessment of UAV photogrammetry, terrestrial laser scanning (TLS) and iPad LiDAR scanning (iLS). UAV photogrammetry enabled rapid coverage of ...
Synthesis and characterization of bis(diphenylphosphinomethyl)amino ligands and their Ni(II), Pd(II) complexes: Application to hydrogenation of styrene
Altan, Orhan
Transition metal complexes of Ni(II) and Pd(II) with ditertiary bis(diphenylphosphinomethyl)amino ligands, (Ph2PCH2)2NC(CH3)3 (1) and [(Ph2PCH2)Nm-PhSO3]Na (2) (Ph = phenyl), have been synthesized in good yields under nitrogen atmosphere by Schlenk technique. All complexes have been characterized using elemental analyses and spectroscopic techniques such as atomic absorption, FT-IR, and NMR (1H, 31P). Atomic absorption spectroscopic analysis showed that the reactions of ligands 1 and 2 with NiCl2 ⋅ 6H2O and [PdCl2(COD)] occurred in 1:1 molar ratio. The metal complexes [NiCl2(Ph2PCH2)2Nm-PhSO3Na] (4) and [PdCl2(Ph2PCH2)2Nm-PhSO3Na] (6) were found to be soluble in ethanolic and aqueous solutions, as well as slightly soluble in water. Electrochemical behaviors of complexes were investigated b...
The effect of home bleaching agents on the surface roughness of five different composite resins: A SEM evaluation
Cengiz Yanardag, Esra
The aim of this study was to investigate the effect of hydrogen peroxide (HP) and carbamide peroxide (CP) on the surface roughness of five different composite resins using profilometer and scanning electron microscope (SEM). Thirty-six specimens (1 mm thick, 10 mm in diameter) of five composite resins were fabricated. Each composite group was equally divided into three subgroups as control, CP and HP. In control group, specimens were stored in daily refreshed distilled water during the 14-day testing period. In other groups, 10% HP (Opalescence Treswhite) and 10% CP (Opalescence PF) were applied and surface roughness values (Ra) of each specimen were measured with a profilometer at the end of 14 days. Additionally, SEM analysis was performed to evaluate the surface deformations of composit...
Clinical-practice stress levels and factors affecting these on first-year nursing students
Yılmaz, Seher Gürdil | Karadeniz, Ebru Yıldız | Lafçı, Diğdem
Purpose: This study aimed to determine the stress levels of first‐year nursing students end of the first day of clinical practice and the factors affecting these. Design and Methods: This was a descriptive and cross‐sectional study. A student information form and the clinical stress questionnaire (CSQ) were used to collect the research data. Findings: The average CSQ score of the students was 23.57 ± 8.35 and it was determined that the students experienced below‐average stress. Practice Implications: In line with the results obtained from the study, it was observed that the student's CSQ scores at the end of the first day of clinical practice were below average, and their biggest fear about clinical practice was that they would harm the patient.
Measurement-Based Evaluation of Photogrammetric Accuracy in Small Object Models Using Turntable and Manual Acquisition
Yiğit, Abdurahman Yasin | Ulvi, Ali
Accurate and efficient 3D reconstruction of small-scale objects remains challenging due to intricate geometries, limited imaging volumes, and sensitivity to acquisition conditions. This study presents a quantitative comparison between two close-range photogrammetric acquisition methods: a conventional manual tripod setup and a custom-built, automated turntable platform controlled by an Arduino microcontroller. Four geometrically distinct objects were reconstructed using both approaches and analyzed through a unified Structure-from-Motion (SfM) workflow. Dimensional accuracy was assessed using reference measurements obtained with a digital vernier caliper (±0.01 mm precision), while geometric fidelity was evaluated through Cloud-to-Cloud (C2C) surface deviation analysis. Results consistentl...
Influence of Incubation Duration on Bond Strength and Microhardness of Calcium Silicate-Based Materials
Şimşek, Emine
The objective of this study was to investigate the effect of different incubation periods on the push-out bond strength and microhardness of calcium-silicate- based materials: MTA-Angelus, Biodentine and BIOfactor MTA. A total of 100 dentine discs were used for the push-out test. Three cavities were prepared on each dentine disc. Each cavity on the same disc was filled with MTA-Angelus, Biodentine or BIOfactor MTA. Half of the dentine samples were incubated at 37°C for 1 day, and the other half for 28 days (n = 50). Push-out testing was then performed. For the microhardness test, material discs were prepared by mixing the materials and placing them into Teflon moulds (n = 26). The samples were incubated at 37°C for either 1 day or 28 days (n = 13). Vickers microhardness testin...