THE SPIRALS ON THE OBLATE AND PROLATE SPHEROIDS OF LORENTZ-MINKOWSKI 3− SPACE R13

Spirials are differentiable curves that meet all meridians of a rotational surface at a constant angle. In this study, we obtain differential equations of all spirals on hyperbolic oblate and Lorentzian prolate spheroids. Then we define the general parametrizations of spirals which are solutions of differential equations

The Structural Behaviour of Composite Beams with Prefabricated Reinforced Concrete Plate (In Zone Positive Moment)

The beam which is taken up in this study is composed of a prefabricated reinforced concrete plate in dimensions of 3000.800.100 mm and a steel profile (INP 120) under thebeam. The steel reinforcement which should exist in the positive moment zone of the prefabricated reinforced concrete plate is replaced in while the plate has been prepared. Epoxyresin is used to provide the connection of the prefabricated concrete plate and the steel profile.The sliding and the lifting forces between the prefabricated reinforced concrete plate and thesteel profile are reacted by the agglutination property of the epoxy resin.The composite beams which are composed of reinforced concrete floor plate and steelbeams or bridge floor and steel beams are more economical than the steel beams that carries reinforced concrete plate freely on its own because in a composite beam the tensile component of the force pair, which is due to bending, is carried by the steel profile and the compressive component that is also due to bending is carried by either reinforced plate or a ofthe reinforced concrete plate and steel profile cooperation system. So, the steel profile gets ridof carrying the compressive component of bending either completely or partially. In this way,the reinforced concrete plate carrying the dead load turns out to be a useful element which carries the compressive component, and in this cooperation, the lever arm of the force pairbecome greater, so a good economical factor is constituted by this situation.The composite beams are always lighter than the reinforced concrete beams. In the composite beam, less steel is used than the reinforced concrete beam which has the sameheight. In the composite beams, a combination material called epoxy resin is used to provide the cooperation between the prefabricated reinforced concrete plate and the steel profile.During the cooperation between the concrete and the steel profile, the sliding and the lifting forces between the two materials are reacted by the help of the epoxy resin.There are not more researches about this subject (Especially, about the composite beamswhich consist of the reinforced concrete plate and the steel profile combined by the epoxyresin in the positive moment zone). Generally in the studies with the epoxy resin, the cooperation of the steel plate and the reinforced concrete beam is researched.The main purpose of our study is to research the bearing behavior of reinforced concrete beams and steel elements in the positive moment zone, and also to research how the cooperation by means of the steel profile and plates existing in the reinforced concrete beam (Agglutinated with epoxy resin) is materialized (Sliding and separation of epoxy resin fromthe steel etc.)The results which are obtained in this experimental study are in accordance with theresults of the theoretical computations that have been done. This study is about the cooperation of the prefabricated reinforced concrete plate and the steel profile. The effect ofthe concrete quality variation on the bearing strength is researched, and certain suggestionsare given.In this study, the composite beam, which is taken, is composed of a prefabricatedreinforced concrete plate in dimensions of 3000.800.100 mm and a steel profile. There inforced concrete plate that forms the compressive head piece of the composite beam will be connected with the steel profile later.While the composite beam has been prepared, the various elements which provide the connection of the prefabricated reinforced concrete plate and the steel profile are located inthe concrete during the production of the reinforced concrete plate. These elements that are located in the prefabricated reinforced concrete plate provide the connection of the reinforced concrete plate and the steel profile. The connection elements composed of U80 profile areused as the steel which provides the connection of the prefabricated reinforced concrete plateand the steel profile.These connection elements are obtained by welding the UNP 80 profile to the steel platein dimensions of 250.200.5 mm on its four sides and it is located in certain distances when theprefabricated reinforced concrete plate has been prepared by pouring concrete into the molt(Fig.2). The interconnection elements in the prefabricated reinforced concrete are combined to the steel profile by the help of the epoxy resin, and so the composite beam is achieved

Possible Impacts of Climate Change on Sunflower Yield in Turkey

Sunflower (Helianthus annuus L.) is the main raw material used to produce oil for consumption and oilseed in Turkey; however, its production is not sufficient, even for only domestic consumption. Therefore, studies were needed to determine how to increase both the production area and yield in Turkey. The aim of the study was to evaluate the possible effects of climate changes on future sunflower yield. A total of 29 provinces with intense sunflower cultivation during years of 1985–2014 were evaluated. Sunflower production values and meteorological data, which belong to years of 1985–2014, on climate projections, based on HadGEM2-ES Global Climate Model and RCP8.5 scenario that cover period of 2016–2099, were used as material. In the first part of the study, linear regression analyses were conducted between the observation and production data using the least squares method. In the second part, the possible effects of climate changes on sunflower yield for 2016–2040, 2041–2070, and 2071–2099 were determined using regression equations and climate projection data. Projections indicate that decreases in yield are expected, especially in the second half of this century. In Tekirdag and Konya provinces, where there is intensive sunflower cultivation, severe decreases in yield are expected for all studied periods

Cholecystoduodenal Fistula related Acute Cholecystitis

Cholecystenteric fistulas are abnormal formations that occur spontaneously between the gallbladder and the gastrointestinal tract. Asymptomatic cases can be diagnosed incidentally as well as during surgery in patients with acute abdomen diagnosis. We present a case of cholecystoduodenal fistula detected in a patient who underwent laparoscopic exploration with a preliminary diagnosis of gallbladder perforation. Cholecystoduodenal fistulas are difficult to diagnose preoperatively and are very rare hepatobiliary emergency surgery cases

Changes in Serum Natriuretic Peptide Levels after Percutaneous Closure of Small to Moderate Ventricular Septal Defects

Background. B-type natriuretic peptide has been shown to be a very sensitive and specific marker of heart failure. In this study, we aimed to investigate the effect of percutaneous closure of ventricular septal defects with Amplatzer septal occluders on brain natriuretic peptide levels. Methods. Between 2008 and 2011, 23 patients underwent successfully percutaneous ventricular septal defect closure in 4 cardiology centers. Brain natriuretic peptide levels were measured in nine patients (4 male, mean ages were 25.3 ± 14.3) who underwent percutaneous closure with Amplatzer occluders for membranous or muscular ventricular septal defects were enrolled in the study. Brain natriuretic peptide levels were measured one day before and one month after the closure. Patients were evaluated clinically and by echocardiography one month after the procedure. Results. Percutaneous closures of ventricular septal defects were successfully performed in all patients. There was not any significant adverse event in patients group during followup. Decrease in brain natriuretic peptide levels after closure were statistically significant (97.3 ± 78.6 versus 26.8 ± 15.6, P = 0.013). Conclusion. Brain Natriuretic Peptide levels are elevated in patients with ventricular septal defects as compared to controls. Percutaneous closure of Ventricular Septal Defect with Amplatzer occluders decreases the BNP levels

Glikojen Depoları , Egzersiz Antrenmanı ve Diyet Etkileşimi

There are numerous studies on the effects of chan- ging individual diet on skeletal muscle substrate utilization and there has been huge, longstanding in- terest to the subject. Beside, there is a growing body of effort to understand how exercise-nutrient inte- ractions and, consequently, the glycogen stores sti- mulate intracellular signaling pathways. In this revi- ew, the cellular metabolic effects of the exercise per- formed with empty glycogen stores and the resulting adaptation periods will be discussed. Although it has been known that training with low muscle glycogen stores modulates cellular signaling pathways related to fat oxidation during submaximal exercise, it is not clear how this could be translated into exercise per- formance. More research determining the benefits of exercise with low glycogen stores for health and sports performance is needed. In addition, pros and cons of training with low glycogen stores should be evaluated very carefully by the athletes and coaches within the periodized training programme

The effect of illness perception on life quality in psoriasis patients

Psoriasis is a chronic disease that has negative effects on quality of life. Understanding the illness perception of psoriasis is important for effective management of the disease and improving quality of life. The aim of this study was to determine the relationship between illness perception and quality of life in psoriasis patients. This cross-sectional study was performed with 306 patients who applied to a psoriasis outpatient clinic of a university hospital in Istanbul, Turkey. Data were collected using a sociodemographic characteristics and disease information form, the Dermatology Life Quality Index (DLQI), the Revised Illness Perception Questionnaire (IPQ-R) and the Psoriasis Area Severity Index (PASI) score. Data were analyzed using descriptive statistics, Kruskal-Wallis test and Mann-Whitney U test, Spearman correlation analysis, and multiple regression analysis. A positive relationship was found between scores on the DLQI and scores on the IPQ-R subscales of Illness identity, Consequences, Emotional representations, Time (cyclic), Personal attributions, External attributions, and Chance. A negative correlation was determined between DLQI scores and scores on the IPQ-R subscales of Treatment control and Illness coherence. Furthermore, there was a positive correlation between the PASI score and the DLQI scores and scores on the IPQ-R subscales of Consequences and Emotional representation. Multiple regression analysis showed that illness identity, PASI scores, treatment control, illness coherence, consequences, and personal attributions were significantly associated with quality of life (R2 = 0.365, p < 0.01). The quality of life of the psoriasis patients who associated their symptoms with the disease, who had a high PASI score, thought that they were adversely affected by the disease, and who saw personal attributions as the cause of the disease was negatively affected. The quality of life of patients who thought that their disease could be kept under control and who understood their disease was positively affected

Use of Repetitive Transcranial Magnetic Stimulation in Treatment of Negative Symptoms of Schizophrenia

In this review, we explore the evidence concerning the efficacy of repetitive transcranial magnetic stimulation (rTMS) to treat negative symptoms of schizophrenia. The majority of protocols have utilized high-frequency excitatory rTMS over the left dorsolateral prefrontal cortex (DLPFC) with limited therapeutic benefits in ameliorating negative symptoms. Although there are many promising results, current evidence does not fully support the clinical use of rTMS in the treatment of negative symptoms or cognitive dysfunction in patients with schizophrenia. Due to the disabling nature of these symptoms, clinical use of this technique could be justified in certain cases although overall response rates are not likely to be high. Treatment of cognitive dysfunction with rTMS is a promising but new area of research. Regarding side effects, the active rTMS intervention was well tolerated. Future research must focus on the clinical efficacy of patterned rTMS (e.g., theta burst stimulation), and optimum stimulation site and parameters.</p