On Comparison of Two Approaches for Steam Turbine Optimizing Start-Up

According to the operating conditions, operating rules and procedures of the steam turbine, a 300MW steam turbine cold start mathematical model was established, and the finite element 3-D modeling and simulation of the 300MW condensing steam turbine rotor was carried out. By using ANSYS. Calculate the stress value of cold start-up according to the cold start curve under standard conditions. The start-up curve design of the initial working condition is inefficient. This paper uses genetic algorithm and particle swarm optimization algorithm to optimize and analyze the turbine mathematical model, draw a new cold start-up curve, and then load the cold start curve into the model. The ANSYS calculates the optimal thermal stress value. After calculating the stress, compare the results on the initial working condition with the results after two optimizations. In contrast, under the premise of ensuring that the thermal stress value of the turbine rotor does not exceed the limit value of the rotor, the startup time is shortened and the economy is improved.

A Perspective to Stinging Nettles from Emergency Department, Snakebites Worldbite

Venomous snakes are responsible for approximately 1.5-3 million bites as well as perhaps more than 100.0000 fatalities annually worldwide [1]. Although exist 3000 venomous snake species in a global scale, only 200 of them pose a life threat for humans due to venom properties and tooth pattern. The venomous species include Elapidae, Viperidae, Hydrophiidae, Colubridae, and Antractaspididae families [2]. Progressive urban development and degradation of wild life have not resulted in lower rates of attacks of humans by wild animals. On the contrary, animals like snakes pose public health problems due to their venoms [3]. Humans residing in rural environments are reportedly more prone to snakebites than people living in urban centers [4-6]. Such a disparity may result from larger snake populations in rural areas but also people making a living through agriculture, which is reportedly a risk factor for snakebite [7]. People suffering from snakebite are generally adult males actively taking part in professional life [5,8].

Tension Pneumothorax due to Colon Perforation in Delay Post Traumatic Diaphragmatic Hernia: Case Report

Diaphragmatic injuries were described first by Sennertus in 1541. Rupture of the diaphragm due to blunt trauma is a rare event that is usually not detected in the acute phase of trauma and may manifest itself late and with dangerous complications. The common side effects of this injury include displacement of the abdominal viscera into the thoracic cavity, which can cause respiratory problems due to limited lungs. Abdominal organs such as stomach, omentum, intestines, spleen, and liver are the most common to herniate in to the thoracic cavity .In late presentation, the key point is to identify the patient’s strong clinical suspicion and history. CT scan is the most common modality in diagnosis of diaphragmatic hernia. In this article, we introduce a unique case of diaphragmatic hernia after trauma due to falling from a height of 2 years ago, which showed itself with a tension pneumothorax in its management.

The Effect of Hydroxychloroquine on Mortality and Pneumonia Development in SARS-Cov-2 Positive Mildly Symptomatic Outpatients without Findings of Pneumonia

Although a period longer than 10 months has passed since the detection of the first cases in and more than 40 million people have been diagnosed with COVID-19 worldwide, there is still no well-accepted and proven treatment choice for the novel coronavirus disease. This study aimed to retrospectively investigate cases in whom treatment had started due to detected as positive during screening and also having shown signs including fever, cough, shortness of breath, excessive malaise, fatigue or loss of smell-taste, without any findings of pneumonia between March 11, 2020, when the first cases were detected in Turkey, and the beginning of May, 2020. A total of 19.276 SARS-CoV-2 PCR positive outpatients, within the first 48 hours of detection and had no findings in lung auscultation or radiology, were detected from the data of Health Information System. 9559 patients were males (49.6%) and 9717 were females (50.4%). An underlying disease considered in the risk group for COVID-19 was found in 1789 of the patients (8.8%). An underlying disease was present in 9.4% using hydroxychloroquine and in 9% not using hydroxychloroquine. 43 deaths (0.2%) were detected among all cases. Mortality in cases using and not using hydroxychloroquine was respectively 5 (in 12.293 cases) and 38 (in 6.983 cases). It was confirmed that pneumonia developed in 2.080 of the patients (10.8%). This number was found as 1286 (10.5%) in cases using HQ and as 794 (11.4%) in cases not using HQ. In conclusion, since this study confirmed that hydroxychloroquine used in outpatients presenting in the early period without any symptoms of pneumonia can ensure survival and prevent pneumonia development particularly in young adults, we may speculate that the early use of hydroxychloroquine in mildly symptomatic patients results in a cost-effective and potent treatment.