Making Use Of The Wind Tribunes With The Little Power In The Requirement Of The Electricity Energy Need

In this study it has been aimed that a little amount of the electricity energy need of Celal Bayar Universty Golmarmara Vocational high school in the city Manisa will be covered by the wind tribunes with the little power. In this study, the electricity energy amounts, which will be produced by the wind tribunes of 2kW, 3kW and 5kW has been kept as aim. To be able to determine the energy amounts from these tribunes, the wind speed and direction data of 8260 hours for 1 year has been provided from the meteorology station. These data of 8760 hours for a year has been registered making use of Excel computer program. The quivalent of these wind speeds of 8760 hours measured at 10 metres height coinciding at the altitude of 20m and 30m have also been accounted at excell computer program using Hellman‘s Relation. The theoretical power, net power and electricity energy values of each hour to be produced from the 2kW, 3kW and 5kW’ wind tribunes for the altitudes of 10m, 20m and 30 metres have been accounted one by one. At the end of the study, it has been concluded that the basic needs such as the enlightening and computer of the Vocational high school can easily be obtained from a wind tribune with little power

In vivo biocompatibility and fracture healing of hydroxyapatite-hexagonal boron nitridechitosan- collagen biocomposite coating in rats

The biocompatibility of orthopaedic implants and their effects on fracture healing have key roles for success. In this study, it was aimed to investigate the effects of a novel biocomposite consisting of hydroxyapatite (HA), hexagonal boron nitride (h-BN), chitosan (Cs), and type 1 collagen (Ct1) on biocompatibility and fracture healing in rats. A total of 60 adult male Wistar rats weighing 300–500 g were used in the study. The rats were randomly divided into 2 groups named A (uncoated/control) and B (biocomposite coated). Biocomposite (HA/h-BN/Cs/Ct1) coated and uncoated stainless-steel implants were used as intramedullary pins. Groups A and B were divided into subgroups of A1 and B1 (15th day), A2 and B2 (30th day), A3 and B3 (45th day) according to the date of euthanasia. Clinical, radiographic, haematological, biochemical, and histopathological findings were evaluated by pairwise comparisons. The findings were consistent and similar. No statistically significant difference was found for a finding disturbing the biocompatibility. Histopathological examinations showed that coating biomaterials did not resorb over the course of 15, 30, and 45 days. It is thus revealed that the content is biocompatible. However, it has been concluded that it is necessary to increase the physical strength of the coating surface against sterilization and surgical procedures. As a result, based on the interpretations of the clinical, radiographic, haematological, biochemical, and histopathological findings, the biocompatibility of HA/h-BN/Cs/Ct1 biocomposite materials has been revealed

Effects of Propolis on Selected Blood Indicators and Antioxidant Enzyme Activities in Broilers under Heat Stress

In this study, we investigated the antioxidant activity of ethanol extracts of propolis (EEP) and vitamin C on biochemical indicators and antioxidant enzyme activities of broilers exposed to heat stress (at 34 °C). The experimental groups were as follows: group I (positive control) and group II (control) were fed a basal diet, group III (vitamin C) was fed a basal diet supplemented with 250 mg vitamin C as ascorbic acid/kg, group IV (EEP-0.5) was fed a basal diet supplemented with 0.5 g EEP/kg, group V (EEP-1) was fed a basal diet supplemented with 1 g EEP/kg, group VI (EEP-3) was fed a basal diet supplemented with 3 g EEP/kg. Plasma superoxide dismutase levels of positive control, control, vitamin C, EEP-0.5, EEP-1 and EEP-3 groups were found as 0.34, 1.23, 0.50, 0.90, 0.30 and 0.41 μkat/ml, respectively (p p p < 0.05), whereas those of muscle and heart were similar in all groups. The results of the present study suggest that EEP and specially EEP at the supplemented dose of 3 mg/kg diet might be considered to prevent oxidative stress in the broilers exposed to heat stress

Er:YAG lazer uygulamasının Cr-Co alaşımı ve polimetil metakrilat arasındaki makaslama bağlantı kuvveti üzerine etkisi

Background: The aim of the present study is to investigate the effect of Er:YAG laser treatment on bond strength between Cr-Co alloy and the acrylic resin. Methods: A total of 36 square-shaped metal alloy test specimens (10x10x3 mm) were prepared. Specimens of each alloy were randomly divided into three treatment groups (n=12). Specimens, left untreated were grouped as control, air abraded with Al2O3 and Er-YAG laser irradiated. Autopolymerized resin discs of 4 mm diameter and 5 mm in height were fabricated and aplicated on alloy specimens. The bonded specimens were stored in distilled water for 24 hours at 37&deg;C in a humidor. They were then mounted in a loading jig and debonded in shear using a universal testing machine at a cross-head speed of 0.05 mm/min. The data were statistically analyzed. Results: Among the three test groups the highest bonding values were obtained in sandblasted test specimens. Although, laser irradiated test specimens showed significantly higher test results compared with control group, they showed lower values than sandblasted test specimens. Conclusion: Laser treatment is not effective as Al2O3 sandblasting for improving bond strength between the alloy and acrylic resin.Amaç: Bu çalışmanın amacı Er:YAG lazer uygulamasının Cr-Co alaşım ve akrilik rezin arasındaki bağlantıya etkisinin araştırılmasıdır. Gereç ve Yöntemler: Toplamda 36 adet 2 kare şeklinde metal alaşım test örneği hazırlanmıştır (10x10x3 mm). Örnekler rastgele 3 farklı yüzey işlemi grubuna ayrılmıştır (n=12). Yüzey işlemi uygulanmamış grup kontrol grubu, Al2O3 ile kumlanmış grup ve Er:YAG lazer uygulanmış grup olarak ayrılmıştır. 4 mm genişliğinde ve 5 mm yüksekliğinde otopolimerizan akrilik rezin metal örneklere uygulanmıştır. Yapıştırılan örnekler distile suda 24 saat 37°C' de bekletilmiştir. Daha sonra üniversal test makinesinin yükleme ucuna yerleştirilmiş ve 0.05 mm/dk hız ile kopana kadar itme uygulanmıştır. Data istatistiksel olarak analiz edilmiştir. Bulgular: Üç test grubu arasında en yüksek bağlantı değerleri kumlanmış örneklerde elde edilmiştir. Lazer uygulanmış test örnekleri kontrol grubundan istatistiksel olarak daha yüksek değerler gösterse de kumlanmış örneklerden daha düşük değerler göstermiştir. Sonuç: Metal alaşım ve akrilik rezin arasında bağlantı dayanımının güçlendirilmesi için lazer uygulaması Al2O3 ile kumlamadan daha etkili değildir

Microwave dielectric property based classification of renal calculi: Application of a kNN algorithm

The proper management of renal lithiasis presents a challenge, with the recur- rence rate of the disease being as high as 46%. To prevent recurrence, the first step is the accurate categorization of the discarded renal calculi. Currently, the discarded renal calculi type is determined with the X-ray powder diffraction method which requires a cumbersome sample preparation. This work presents a new approach that can enable fast and accurate classification of discarded renal calculi with minimal sample preparation requirements. To do so, first, the measurements of the dielectric properties of naturally formed renal calculi are collected with the open-ended contact probe technique between 500 MHz to 6 GHz with 100 MHz intervals. Cole–Cole parameters are fitted to the measured dielectric properties with the generalized Newton–Raphson method. The re- nal calculi types are classified based on their Cole–Cole parameters as calcium oxalate, cystine, or struvite. The classification is performed using nearest neigh- bors (kNN) machine learning algorithm with the 10 nearest neighbors, where accuracy as high as 98.17% is achieved

Microwave dielectric spectroscopy of renal calculi: A large scale study on dielectric properties from 500 MHz to 18 GHz

Inherent dielectric property discrepancy between biological anomalies and healthy tissue enables the microwave diagnostic and therapeutic technologies. To reveal this discrepancy, microwave dielectric properties of many different biological tissues are tabulated. Although the dielectric properties of biological tissues are well documented in the literature, the knowledge on microwave dielectric property behavior of the renal calculi is limited. This work presents ultra wideband dielectric properties of three renal calculi types between 500 MHz to 18 GHz to pave the way for possible application of microwave technologies for diagnosis, treatment, and prevention of urolithiasis. Microwave dielectric spectroscopy is performed on a total of 66 natural stone samples with open-ended coaxial probe technique. The samples belong to three commonly diagnosed renal calculi categories, namely calcium oxalate, cystine, struvite. Analysis of variance (ANOVA) test is performed on fitted Cole-Cole parameters and it was concluded that there is a statistically significant difference between the dielectric properties of the renal calculi types. A patient-to-patient statistical test is also performed and it was concluded that there is no statistical difference between the samples belonging to the same renal calculi category. To this end, based on the relative permittivity discrepancy between the renal calculi types, the category of renal calculi can be identified by measuring the dielectric properties of renal calculi with open-ended coaxial probe technique

Comparison of short-term results of open and laparoscopic surgery in gastric cancer at a new regional hospital: A single surgeon experience

Aim: To compare the short-term results of open and laparoscopic gastrectomy in gastric cancer surgery. Material and Method: From 15 May 2018 to 28 June 2021, patients who underwent open and laparoscopic gastrectomy for gastric cancer by a single surgeon between were retrospectively analyzed from a prospectively maintained database. Patients were compared in terms of early intraoperative and postoperative outcomes. Both surgical methods were compared in terms of early intraoperative and postoperative outcomes. Results: A total of 34 patients (open n=23, laparoscopic n=11) were included in the study. While the mean number of lymph nodes was similar between the groups, more metastatic lymph nodes and more advanced disease were detected in the open group (p=0.007, p=0.002, respectively). According to tumor location, patients who underwent laparoscopic gastrectomy were more distally located (p=0.01). The mean operative time was shorter in the open group (171.5 min and 206 min, p=0.006, respectively), while the estimated blood loss was less in the laparoscopic group (158.2 mL vs 186.7 mL, p=0.003). Four patients (17.4%) in the open group and two patients (18%) in the laparoscopic group had at least Clavien-Dindo grade III complications (p=0.96). Earlier gas output was seen in the laparoscopic group (p=0.002), while other postoperative outcomes were similar between the groups. Mean follow-up time was longer in the open group (13.4 months and 7.6 months, respectively, p=0.004). Conclusion: Until sufficient experience is reached in laparoscopic gastrectomy, choosing earlier stage and distally located tumors is a safe method with postoperative results similar to open gastrectomy

Is There Any Correlation Between De Ritis Ratio and Prostate Cancer in Males Who Underwent Transrectal Prostate Biopsy?

Objective:This study aims to evaluate the diagnostic value of the De Ritis ratio (DRR) in predicting prostate cancer (PCa) and clinically significant prostate cancer (csPCa) in biopsy-naive patients with suspected PCa.Method:We retrospectively reviewed medical records of 282 male patients who underwent transrectal ultrasound-guided prostate needle biopsy (PNB) between January 2015 and July 2019. Demographic and clinical characteristics of the patients including digital rectal examination findings, preoperative prostate-specific antigene (PSA), aspartate aminotransferase levels, alanine aminotransferase levels, prostate volume, comorbidities and pathological findings of the PNB specimens were noted in detail for each patient. The study cohort was divided into two groups according to the histopathological results of PNB specimens (group 1: patients with benign histopathology, group 2: patients with PCa). The receiver operating characteristic (ROC) curve analysis was conducted to evaluate the diagnostic performance of PSA, PSA density and DRR in predicting PCa.Results:The median age of the participants was 64 (59-69) years. While 71.6% (n=202) of the participants were in group 1, 28.4% (n=80) of them were in group 2. The median DRR value of group 1 was 1.08 (range: 0.89-1.32), and the median DRR value of group 2 was determined as 1.19 (range: 0.95-1.56), and the median DRR value of group 2 was found to be statistically significantly higher than that of group 1 (p=0.013). Statistically significant but a weak positive correlation was observed between PCa in PNB specimens and DRR (r=0.149, p=0.012), while there was no statistically significant correlation between csPCa in PNB specimens and DRR (r=0.002, p=0.983). The ROC curve analysis showed that the cut-off value of DRR for the presence of PCa in PNB specimens was 1.125 and the area under curve was 0.595 (95% confidence interval=0.518-0.672, p=0.013) for the presence of PCa in PNB specimens.Conclusion:This study suggests that DRR had restricted diagnostic importance in predicting PCa in biopsy-naive patients who underwent transrectal PNB

Changes in electrocardiographic p wave parameters after cryoballoon ablation and their association with atrial fibrillation recurrence

Background: Changes in P wave parameters after circumferential pulmonary vein isolation (CPVI) have been previously identified. In this study, we aimed to determine the changes in P wave parameters surface electrocardiogram (ECG) after cryoballoon ablation (CBA) for atrial fibrillation (AF) and evaluate their relationship with AF recurrence. Methods: Sixty-one patients (mean age 53 ± 11 years, 50.8% male) with paroxysmal AF who underwent CBA were enrolled. A surface ECG was obtained from all patients immediately before the procedure, and repeated 12 hours after the procedure. P wave amplitude (Pamp), P wave duration (Pwd), and P wave dispersion (Pdis) values in preprocedural and postprocedural ECGs were measured and compared. Recurrence rates of AF in 3, 6, and 9 months following ablation were recorded for all patients. Changes in P wave parameters were compared between patients with and without AF recurrence. Results: Compared to preprocedural measurements, Pamp (from 0.58 ± 0.18 mV at baseline to 0.48 ± 0.17 mV, P 0.05). Conclusion: Pamp, Pwd, and Pdis parameters exhibited significant decrease after CBA compared to preprocedural measurements. Decreased Pamp was shown to be a predictor for good clinical outcomes following CBA

Evaluation of Antibiotic Alternatives Used in Orthopedic Departments of 2 Hospitals According to Rational Use of Antibiotics

Amaç: Birbirine yakın ve aynı bölgede yer alan iki farklı hastanenin ortopedi ve travmatoloji servislerinde yatan hastalarda, etkeni saptanan enfeksiyon olgularında antibiyotik kullanımının, akılcı ilaç tedavi rehberleri ve kültür antibiyogram sonuçlarına göre uygunluğunun araştırılması amaçlandı.Gereç ve Yöntem: Bu araştırma projesi T.C. Sağlık Bakanlığı Genel Sekreterlik İzni doğrultusunda 01 Ocak 2014 ile 31 Aralık 2014 tarihleri arasında, iki hastanenin ortopedi ve travmatoloji servislerinde enfeksiyon tanısına sahip olguların verileri üzerinden gerçekleştirildi. Malignitesi olan veya başka bir servise taburcu edilen olgular çalışmadan dışlandı. Standart bir form oluşturuldu. Bu form içerisine, olguların demografik verilerine ek olarak, kültür antibiyogram sonuçları, enfeksiyon patojen etkeni, kültür materyalinin nereden alındığı, kullanılan antibiyotiklerin pozolojisi, süresi ve uygunluğu ile olguların yatış süreleri raporlandı. Maliyetlerin hesaplanmasında, Sağlık Bakanlığı ve Maliye Bakanlığı 2014 yılı fiyat listeleri temel alındı. Birim fiyat üzerinden hasta başına kullanılan antibiyotik maliyetleri hesaplandı.Bulgular: Saptanan enfeksiyon etkeni için her zaman uygun antibiyotiğin seçilmediği belirlendi. Antibiyogram sonuçlarına göre etkili, daha düşük maliyetli antibiyotikler kullanılabilinmesine rağmen sıklıkla daha pahalı ve toplam maliyeti yükselten antibiyotikler seçilmiştir.Sonuç: Kanıta dayalı tıp ve akılcı antibiyotik kullanımı kapsamında enfeksiyon tedavisinde kültür antibiyogram sonuçlarına göre uygun antibiyotik seçilmesi gerekliliği tartışılmaz bir bilimsel gerçektir. Ortopedi ve travmatoloji servislerinde enfeksiyon tedavisinde enfeksiyon hastalıkları ve farmakoloji uzmanlarını da sürece katarak multi-disipliner yaklaşılarak kanıta dayalı rehberlerin kullanımının artışı sağlanmalıdırBackground: The present study is an analysis of appropriateness of antibiotics use for patients in whom infectious agent was detected. Data from patients in orthopedics and traumatology department of 2 hospitals in the same district were evaluated according to rational antibiotic drug use guidelines and culture antibiogram results.Methods: Data of patients diagnosed with infection between January 1, 2014 and December 31, 2015 in orthopedics and traumatology department of 2 different hospitals were analyzed. Patients diagnosed with malignancy or who were discharged from other departments were excluded. A standard form was used to collect demographic data, culture antibiogram results, details of infectious agent, source of culture material, posology of antibiotic used, duration and appropriateness of use, and length of hospital stay. Costs were estimated based on number of units used and price per unit according to 2014 Ministry of Health price list. Mean price of antibiotics used per patient was calculated and descriptive analyses were also completed.Results: It was determined that appropriate antibiotics for detected infectious agent were not always selected. Though there were effective, less expensive antibiotics that could have been used according to antibiogram results, more expensive antibiotics were often chosen, resulting in greater total cost.Conclusion: Multidisciplinary approach in patient care and use of evidence-based guidelines should be increased. Teams should be formed and led by infectious disease and pharmacology specialists. New strategies should be developed immediately in health economics and new pharmacoeconomic models should be initiated in orthopedics and traumatology department