Sadi Carnot’s 1824 Reflections on the Motive Power of Fire created new science thermodynamics. It succeeded in its audacious goal finding a very general theory efficiency heat engines, by introducing and exploiting strange unexpected notion thermodynamically reversible process. The is internally contradictory. requires states these processes to be both unchanging equilibrium, with perfect balan...

Introduction: Covid-19 is a viral epidemic disease that causes serious health problems and death worldwide. The rapid expansion of infection led to the disruption healthcare services radical reorganisation resources due workers' infection. Aim: This clinical study investigated effects on emergency elective cases in our general surgery clinic. Material methods: We retrospectively analysed data 1...

The Calorie (kcal) of present U.S. food labels is similar to the original French definition of 1825. The original published source (now available on the internet) defined the Calorie as the quantity of heat needed to raise the temperature of 1 kg of water from 0 to 1 degrees C. The Calorie originated in studies concerning fuel efficiency for the steam engine and had entered dictionaries by 1840...

James Joule played the major role in establishing the conservation of energy, or the first law of thermodynamics, as a universal, all-pervasive principle of physics. He was an experimentalist par excellence and his place in the development of thermodynamics is unarguable. This article discusses Joule's life and scientific work culminating in the 1850 paper, where he presented his detailed measu...

In isolated physical systems differences in pressure, temperature, and chemical potential tend to even out. This principle of decay is called the second law of thermodynamics. It can be derived from the assumed randomness of molecular motion. The second law was postulated by the French physicist Sadi Carnot in his 1824 paper Reflections on the Motive Power of Fire [1], which presented the view ...

Abstract Background Obesity has become an increasingly important global health problem. Laparoscopic sleeve gastrectomy is the most widely performed bariatric surgery. Aim of Work To evaluate patients who failed to lose weight or regained after perfonning and how manage them. Patients Methods This study been conducted at Ain Shams university hospital (Al Demerdash hospital) University. a prospe...

Problems of Chinese Citrus Fly (CCF), Bactrocera minax (Enderlein) in citrus orchards have been increasing Nepal. The reason behind the failure CCF control is lack a clear and thorough understanding adult emergence period different altitudes. Therefore, pupae were collected from soil below infested sweet orange trees Sunapati Rural Municipality, Ramechhap, Nepal reared containers height 5 cm di...

Address for Correspondence: Halil Doğan, Department of Emergency, Bakırkoy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey E-mail: [email protected] ©Copyright 2016 by Emergency Physicians Association of Turkey Available online at www.jemcr.org Introduction For erythrocytes, which contain hemoglobin, to carry oxygen to tissues, the iron content of hemoglobin should be in th...

Cool in the Kitchen: Radiation, Conduction, and the Newton “Hot Block” Experiment Our curiosity was aroused. How good an approximation to reality is Newton’s law— and what in any event determines whether the temperature of the hot object is too high? Furthermore, although Newton’s name is readily associated with his laws of motion, law of gravity, and various optical phenomena and apparatus, it...