65 research outputs found
The prophylactic efficacy of Anatolian propolis in individuals at high risk of COVID-19
OBJECTIVE: No prophylactic
treatment is available for individuals at high risk of
developing COVID-19. This study, which was conducted between December 25, 2020, and January
25, 2021, is one of the first clinical studies to evaluate the efficacy of Anatolian propolis supplement
against COVID-19. The aim was to obtain evidence
on the prophylactic use of Anatolian propolis in individuals at high risk of developing COVID-19.
SUBJECTS AND METHODS: This volunteer-based study was conducted in two centers.
The study involved 209 healthcare professionals (physicians, nurses, medical secretaries) from
Emergency Medicine Department of Medical Faculty of Ataturk University and Emergency Medicine Department of Rize Recep Tayyip Erdogan
University. 204 participants meeting the study criteria were divided into two groups as experimental
group and control group. The experimental group
received 20 drops of BEE’O UP (BEE&YOU) 30%
Propolis drops twice a day during a follow-up period of 1 month. The control group received no
supplement but was followed up. The participants
showing symptoms during the study and all the
participants at the end the study were subjected to
PCR testing.
RESULTS: The evaluation of the results of PCR
testing at the end of the study has shown that 14
participants from the control group and only 2
participants from the experimental group, who received Anatolian propolis supplement, were reported as positive cases.
CONCLUSIONS: It has been found that a
statistically significant protection was induced
against COVID-19 infection in 98% of the experimental group, who received Anatolian propolis,
compared to the control group
Image Steganalysis in Frequency Domain Using Co-Occurrence Matrix and Bpnn
In the last two decades, steganalysis has become a fertile research area to minimize the security risks left behind by Misuse of data concealment in digital computer files. As the propagation of hidden writing increased, the need for the steganalysis emerged and grew to a large extent necessary to deter illicit secret communications. This paper introduces a steganalysis system to detect hidden information in images through using co-occurrence matrix, frequency domain transform, the first three moments, and back propagation neural network (BPNN). Four varieties of the system implemented. Firstly, the co-occurrence matrix calculated for the input image, which suspected to be a carrier of hidden secret information. Second, three levels of discrete wavelet transform (DWT) are applied resulting in 12 subbands. Then, those subbands along with the original image are transformed by discrete Fourier transform (DFT) or discrete cosine transform (DCT) to produce 13 subbands. After that, the first three moments are calculated resulting feature vector with 39 features. Finally, BPNN is used as a classifier to determine whether the image is containing hidden information or not. The system is tested with and without co-occurrence matrix, each of them once using DFT and another time using DCT. The results have shown that using co-occurrence matrix with DFT has the highest performance, which was 81.82% on the Hiding Ratio of 0.5 bit per pixel. This work demonstrates a good effect comparing to previous works
Increased choroidal thickness in adults with Down syndrome.
INTRODUCTION: People with Down syndrome (DS) are particularly susceptible to Alzheimer's disease (AD) due to the triplication of the amyloid precursor protein (APP) gene. In this cross-sectional study, we hypothesized that choroidal thinning reported in sporadic AD (sAD) is mirrored in adults with DS. METHODS: The posterior pole of the eye for 24 adults with DS and 16 age-matched controls (Ctrl) were imaged with optical coherence tomography. Choroidal thickness (ChT) was measured and analyzed in relation to cognitive status and cerebral amyloid beta (Aβ) load. RESULTS: ChT was increased in people with DS (pwDS) compared to Ctrl. This increase was associated with gender differences and positively correlated with cerebral Aβ load in a small subset. There was no significant correlation detected between ChT and age or cognitive status. DISCUSSION: In contrast to sAD this study found a significantly thicker choroid in pwDS. Whether these changes are related to Aβ pathology in DS needs further investigation
Turner syndrome and associated problems in turkish children: A multicenter study
Objective: Turner syndrome (TS) is a chromosomal disorder caused by complete or partial X chromosome monosomy that manifests various clinical features depending on the karyotype and on the genetic background of affected girls. This study aimed to systematically investigate the key clinical features of TS in relationship to karyotype in a large pediatric Turkish patient population. Methods: Our retrospective study included 842 karyotype-proven TS patients aged 0-18 years who were evaluated in 35 different centers in Turkey in the years 2013-2014. Results: The most common karyotype was 45,X (50.7%), followed by 45,X/46,XX (10.8%), 46,X,i(Xq) (10.1%) and 45,X/46,X,i(Xq) (9.5%). Mean age at diagnosis was 10.2±4.4 years. The most common presenting complaints were short stature and delayed puberty. Among patients diagnosed before age one year, the ratio of karyotype 45,X was significantly higher than that of other karyotype groups. Cardiac defects (bicuspid aortic valve, coarctation of the aorta and aortic stenosi) were the most common congenital anomalies, occurring in 25% of the TS cases. This was followed by urinary system anomalies (horseshoe kidney, double collector duct system and renal rotation) detected in 16.3%. Hashimoto’s thyroiditis was found in 11.1% of patients, gastrointestinal abnormalities in 8.9%, ear nose and throat problems in 22.6%, dermatologic problems in 21.8% and osteoporosis in 15.3%. Learning difficulties and/or psychosocial problems were encountered in 39.1%. Insulin resistance and impaired fasting glucose were detected in 3.4% and 2.2%, respectively. Dyslipidemia prevalence was 11.4%. Conclusion: This comprehensive study systematically evaluated the largest group of karyotype-proven TS girls to date. The karyotype distribution, congenital anomaly and comorbidity profile closely parallel that from other countries and support the need for close medical surveillance of these complex patients throughout their lifespan. © Journal of Clinical Research in Pediatric Endocrinology
Open hole compressive strength and damage mechanisms:Maximum stress versus Hashin criteria
Yozgat ili merkezinde farklı sosyo-ekonomik bölgelerdeki iki ilköğretim okulunda bağırsak parazitlerinin araştırılması
Application of cohesive zone elements in damage analysis of composites:Strength prediction of a single-bolted joint in CFRP laminates
Strength prediction of bolted joints in CFRP composite laminates using cohesive zone elements
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