24 research outputs found
New methods for the speciation analysis of radioactive iodine in aqueous samples
No full textRadioactive iodine in the environment comes both from nature and as a result of human activities. Understanding its behavior and fate in the environment, to enable assessment be made of its environmental impact, requires knowledge of its chemical form (speciation). The aim of this research work was to develop new analytical methods for the identification and measurement of radioactive iodine species, with an emphasis on the measurement of iodate and iodide in aqueous bsamples. A new derivatisation-solid phase extraction (DSPE) method was developed based on the conversion of iodine species to 4-iodo-N, N-dimethylaniline (IDMA) which was then extracted from the aqueous sample by using solid phase extraction. Stable iodine could be measured by HPLC determination of IDMA, giving a detection limit of ~1?mol L-1 for both iodide and iodate when a sample size of 250 mL was employed. DSPE methods could also be adapted to collect individual 129I species as radioactive IDMA, with final measurement by liquid scintillation counting (LSC). The mean recoveries from determining 129I- (~9.2 Bq g-1) and 129IO3 - (~0.52 Bq g-1) in water were 96.5±2.6 % and 94.6±0.8 %, respectively. These adapted methods were applied to the speciation analysis of 129I in an effluent from a nuclear facility without pre-separation. The inorganic forms of 129I in the effluent were iodide, iodate and elemental iodine. To overcome salt-derived interferences during DSPE analysis of seawater, an anion exchange approach was developed to pre-separate and enrich iodide and iodate from seawater (1 litre) prior to re-enrichment using the DSPE method. Total yields of iodide and iodate obtained from this combined approach were 81.6±1.8% and 79.1±7.7%, respectively. The concentration-based detection limit could be improved by using ICP-MS detection. Whilst the combined methods could enrich the concentrations of inorganic iodine species in seawater by 200-fold, some incomplete separation of iodide from iodate was however observed. Both methods were shown to offer simple and selective approaches to the speciation analysis of both stable and radioactive iodine in a variety of sample type
TR Dizin Dergilerinde ‘Ortodonti’ ve ‘Estetik ve Konservatif Tedavi’ Alanlarındaki İn-Vitro Çalışmaların Bibliyometrik Analizi
No full textIntroduction: The aim of this study is to evaluate in-vitro titled studies in the field of orthodontics and aesthetic and conservative treatment published in TR Index journals. Materials and Methods: A systematic search of the TR Index database (https://trdizin.gov.tr/) was conducted, focusing on studies that utilized the keyword “in-vitro”. Inclusion criteria were limited to dental journal publications in English, Turkish, and other languages within the specified period. Data extraction and analysis included journal name, publication year, author institutions, departments, article type, article language, and citation count. Results: A total of 140 in-vitro titled studies were identified across various dental specialties. After excluding 83 studies that did not align with the scope of ‘orthodontics’ and ‘aesthetic and conservative treatment’, 57 studies were included in the final analysis. Of these, 9 studies were related to ‘orthodontics’, and 48 studies focused on ‘aesthetic and conservative treatment’. The journals with the highest number of in-vitro titled studies over the past three years were Turkiye Clinics Journal of Dental Sciences (13 studies), Cumhuriyet Dental Journal (8 studies), and Selcuk Dental Journal (8 studies). The language of publications, whether Turkish or English, did not significantly impact citation counts (p = 0.562). Conclusions: In-vitro research have a significant for providing critical insights into materials and treatments in both ‘orthodontics’ and ‘aesthetic and conservative treatment’. However, there is a need to increase orthodontic-related in-vitro studies. The findings suggest that the language of publication does not impact citation rates, indicating a broad acceptance of research across different languages. © 2024 Elsevier B.V., All rights reserved
Evaluation of pulmonary vein variations in the middle pulmonary lobe with 64-slice multidetector computed tomography
No full textPurpose: To evaluate the multi detector computed tomographic (CT) depiction of middle lobe vein variation of the right pulmonary vein and create a diagram for cardiologist and cardiovascular surgeons. Materials and Methods: According to hospital records, between January 2009 and April 2010, 314 consecutive patients underwent pulmonary CT angiography (CTPA) and coronary CT angiography. The CT films from these patients were retrospectively analyzed. Results: Under normal conditions, the middle pulmonary vein (MPV) drains into the left atrium either by the direct or indirect route. Direct (37 patients, 11.8%) drainage means that the MPV does not drain into the upper or lower pulmonary veins but instead drains directly into the right pulmonary vein system. In contrast, indirect (276 patients, 87.9%) drainage occurs when the MPV drains into the upper or lower pulmonary veins. In this study, 12 different variations in drainage patterns were found. Conclusion: Increasing the number of patients may have led to the identification of additional variants. However, clinically important variations are rarely seen. Correct mapping of the MPV is very important for cardiologists and for surgeons in order to provide the best treatment and avoid complications
G-shaped band-notched ultra-wideband MIMO antenna system for mobile terminals
No full textWOS:000399751400019Low-profile band-notched G-shaped ultra-wideband (UWB) multiple input multiple output (MIMO) antenna design for mobile terminals has been presented. In this context, two UWB MIMO antenna systems have been designed: The first is with square elements and the second is with G-shaped elements. An MIMO antenna with two symmetrical square elements each of 8x8mm(2) operating between 2.2 and 13.3GHz was firstly designed for the UWB applications. Each square element was fed through a 50- microstrip transmission line (MTL). A thin strip line was designed at the end of MTL to provide impedance matching. Although the isolation level between the elements was satisfactory for efficient MIMO implementation, a T-shaped strip on the ground was employed to further improve the isolation for low frequency. The frequency range of 4.4-6.2GHz which is an important band of wireless local area network (WLAN) standard was then notched by forming a G-shaped structure on the square element. The performance of G-shaped antenna system was studied in terms of important antenna characteristics and MIMO parameters. The results demonstrate that the G-shaped MIMO antenna has nearly omnidirectional patterns, stable gain and good diversity performance besides having low-profile elements.BAP (Scientific Research Fund) department of Karamanoglu Mehmetbey University [12-M-15]This work is funded by BAP (Scientific Research Fund) department of Karamanoglu Mehmetbey University under grant no. 12-M-15. The author is thankful to Mustafa Tekbas for contributions to the experiments in Marmara Research Centre (MRC) of TUBITAK
PP-171: GUNSHOT INJURY OF THE HEART: AN UNUSUAL LOCALIZATION OF BULLET FRAGMENT
No full text[Abstract Not Available
The effect of periodontal prophylaxis procedures on the surface properties of tooth-colored restorative materials
No full textThis study aimed to investigate the effect of various periodontal hygiene procedures on the surface properties of direct and indirect restorative materials. Disc-shaped specimens (10 x 2 mm) of FC: Flowable Composite, UC: Universal Composite, IC: Indirect Composite, CC: CAD/CAM Composite were fabricated (n = 70) and divided randomly into subgroups: 1-Control, 2-US: Ultrasonic scaling, 3-RP: Rubber-cup polishing, 4-AP: Air-polishing, 5-US+RP, 6-US+AP, 7-US+AP+RP. The color, surface roughness, and gloss measurements were performed. Data were analyzed with variance analysis and the correlation coefficient was used to evaluate the relationship between surface properties (p < 0.05). The highest and lowest roughness values were obtained in FC after US and CC's control group, respectively. The surface roughness of FC, IC, and CC was significantly affected by the application of various prophylaxis procedures (p < 0.05). AP and US+AP+RP presented the least and most affected surface roughness, respectively. The lowest surface gloss value was in the US and RP subgroups of FC. The process that the least reduced the surface gloss was AP. Material and procedure affected the color stability (p < 0.05) except for CC. The highest Delta E values were obtained in US+AP+RP subgroups. Indirect restorative materials showed less roughness and color change as well as higher gloss values after all periodontal prophylaxis procedures. The use of air-polishing has proven to be a reliable periodontal hygiene approach for direct and indirect restorations due to the less deterioration in the surface properties.Scientific and Technological Research Council of Turkey (TUBITAK) [220S228]This study was funded by the Scientific and Technological Research Council of Turkey (TUBITAK), (Project Number: 220S228). Authors would like to thank the company Ivoclar Vivadent for providing the Tetric N-Flow composites
PP-006: ENTRAPPED THROMBUS IN PATENT FORAMEN OVALE COMPLICATED BY PULMONARY EMBOLISM
No full text[Abstract Not Available
Nexus among biomass energy consumption, economic growth, and financial development: Evidence from selected 15 countries
No full textThe objective of this study is to examine the association among biomass energy consumption (BEC), economic growth (EG), and financial development (FD). For this purpose, panel data method is employed for the selected 15 countries (Cameroon, Democratic Congo, Tanzania, Nigeria, Haiti, Nepal, Togo, Mozambique, Ivory Coast, Niger, Kenya, Cambodia, Myanmar, Zimbabwe, Republic of Congo) utilizing the annual data over the period 1993-2017. The cointegration test results indicate the presence of long-run associations among the variables. Causality tests indicate bidirectional relationships among the variables. According to the causality test results, a bidirectional and positive relationship exists between FD and BEC, as well as between BEC and EG. These results support the feedback hypothesis for the selected countries. Overall results indicate that in the selected countries biomass energy investments can boost economic growth and financial development. Findings of the study yield worthy signals for policymakers. The results may serve as a guide for biomass energy usage policies, and more effective decisions can be made by assessing the impacts of biomass energy consumption on economic growth and financial development. (c) 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
BALNEOTHERAPY IN COMPLEX THERAPY FOR GYNECOLOGICAL DISEASES AND OPERATIONS
No full textAbstract
This article discusses the use of balneotherapy in complex therapy for gynecological diseases and after surgery. Risk factors and cervical pathologies that may contribute to the development of cancer will be considered. The sources, including Russian and foreign studies, are analyzed.
Аннотация
В данной статье рассматривается использование бальнеотерапии в комплексной терапии при гинекологических заболеваниях и после операций. Будут рассмотрены факторы риска и патологии шейки матки, которые могут способствовать развитию рака. Анализируются источники, включая российские и зарубежные исследования.Список литературы:
1. Кузьмин, В. В., Титова, О. Б., & Михайлова, В. В. (2015). Бальнеотерапия при хро-нических воспалительных заболеваниях женских половых органов. Вестник новых меди-цинских технологий, 22(2), 96-100.
2. Черепанова, Е. А., & Иванова, О. В. (2017). Применение бальнеотерапии после ги-некологических операций. Бюллетень сибирской медицины, 16(4), 128-133.
3. Титова, О. Б., & Михайлова, В. В. (2018). Бальнеотерапия при хронических воспа-лительных процессах в тазовых органах. Медицинский алфавит, 1(15), 10-14.
4. Odabasi, E., Turan, M., Erdem, T., & Tekbas, F. (2017). Balneotherapy in fibromyalgia: a single blind randomized controlled clinical study. Rheumatology International, 37(7), 1157-1163.
5. Смирнова, Л. А., Максимова, В. А., & Черкасова, Е. В. (2020). Использование бальнеотерапии в комплексном лечении гинекологических заболеваний. Балнеология и фи-зиотерапия, 97(1), 39-42.
6. Tenti, S., Cheleschi, S., Guidelli, G. M., & Fioravanti, A. (2019). Balneotherapy for the treatment of endometriosis-related pelvic pain: a clinical and instrumental pilot study. Archives of Gynecology and Obstetrics, 300(6), 1663-1671.
7. Radzinsky, V. E., Khamoshina, M. B., & Dolgushina, N. V. (2016). The efficiency of balneotherapy in the treatment of luteal phase deficiency in infertile women with mild endometrio-sis. Gynecological Endocrinology, 32(sup2), 36-39.
8. Головач, И. Я. (2021). Применение бальнеотерапии в гинекологии. Вестник науки и здоровья, 7(4), 50-55
Effect of hypoglycemic drugs on aspirin resistance in patients with diabetes mellitus
No full textBackground: Aspirin reduces the odds of an arterial thrombotic event in high-risk patients. However, 10%-20% of patients with an arterial thrombotic event who are treated with aspirin have a recurrent arterial thrombotic event during long-term followup. Aspirin resistance has been described in some patient populations such as those with an acute coronary syndrome, ischemic stroke, percutaneous coronary intervention with drug-eluting stent, stent re-stenosis, and diabetes mellitus (DM). The aim of this study was to assess aspirin resistance and to compare it to the use of oral anti-diabetic drugs and insulin in patients with diabetes. Methods and Results: Platelet aggregation was measured after aspirin treatment in 101 diabetic patients undergoing percutaneous coronary intervention. Two patient populations were included in the investigation: use of insulin (group 1) and use of oral anti-diabetic agents (OAD) (group 2) in diabetic patients. Platelet aggregation was determined using a multichannel Multiplate analyzer. Among group 1 patients, 4.7% were aspirin non-responders and among group 2 patients, 8.6% were aspirin non-responders. Statistical differences were not found between the groups (p = 0.359). Conclusions: This study demonstrated that there was no significant difference in aspirin resistance between type 2 diabetes mellitus patients on insulin treatment and type 2 diabetes mellitus patients on OAD treatment
