O documento discute os sistemas de ar condicionado e refrigeração. Explica que o ar condicionado envolve o controle da temperatura, circulação, umidade e pureza do ar. Descreve os principais tipos de sistemas como unidades centrais, equipamentos individuais, sistemas diretos e indiretos.
O documento discute diversos mecanismos de endurecimento em metais, incluindo redução do tamanho de grão, solução sólida, precipitação, deformação a frio e tratamentos térmicos. Explica como esses mecanismos aumentam a resistência mecânica ao restringir o movimento de discordâncias na estrutura cristalina através da introdução de obstáculos. Fornece exemplos de cada mecanismo e suas aplicações em diferentes ligas metálicas.
Este documento resume los conceptos clave de la hidrodinámica, incluyendo las fuerzas que actúan sobre un fluido en movimiento, las ecuaciones de Euler, y los diferentes regímenes de flujo (laminar vs turbulento) determinados por el número de Reynolds. Explica que el flujo es laminar para números de Reynolds menores a 2000 y turbulento para números mayores a 4000.
1. Aortic stenosis can be caused by rheumatic heart disease, congenital abnormalities of the aortic valve, or age-related degeneration and calcification of the valve.
2. Obstructed left ventricular outflow due to aortic stenosis leads to increased pressure and compensatory hypertrophy of the left ventricle. While cardiac output is maintained at rest, it often fails to rise normally during exertion in severe aortic stenosis.
3. Symptoms of aortic stenosis include angina, syncope, exertional dyspnea, and heart failure, which typically appear when the aortic orifice is reduced to one third of its normal size. Valve replacement surgery is
Aortic regurgitation occurs when the aortic valve does not close properly, allowing blood to flow back into the left ventricle. It can be caused by conditions that damage the aortic valve such as rheumatic fever or a congenital heart defect. Symptoms may include breathlessness, fatigue, and chest pain. Diagnosis is made through echocardiogram which can assess the severity. Treatment depends on severity but may involve lifestyle changes, medications, or aortic valve replacement surgery if symptoms worsen or damage to the heart progresses. Prognosis depends on severity and treatment, with severe untreated cases having a high risk of heart failure or sudden cardiac death.
Este documento describe los principios y leyes de la clasificación por tamaños de partículas minerales. Explica que la clasificación separa partículas en fracciones granulométricas en función de su velocidad de asentamiento en un fluido. Describe las leyes de Stokes y Newton que relacionan la velocidad de asentamiento con el tamaño y densidad de las partículas. También cubre los conceptos de asentamiento libre y obstruido y cómo esto afecta la clasificación.
The document outlines mitral regurgitation (MR), including its definition, causes, progression, signs and symptoms, and diagnostic tests. MR occurs when the mitral valve does not close properly, allowing blood to flow back into the left atrium. It begins as an acute condition but can progress to chronic compensated and decompensated phases. In acute and decompensated phases, symptoms include heart failure signs. Chronic compensated MR often presents without symptoms. Diagnosis involves physical exam, echocardiogram, and other cardiac tests.
دانشگاه شهید بهشتی(مجازی)
استاد : جناب آقای دکتر اصنافی
آموزشیار: سرکار خانم دکتر پاکدامن
رشته : علم اطلاعات و دانش شناسی ( مدیریت اطلاعات)
درس : مبانی کتابداری و علم اطلاعات
تهیه کننده : هانیه شاه میرزا
سال تحصیلی: 1396
O documento discute os sistemas de ar condicionado e refrigeração. Explica que o ar condicionado envolve o controle da temperatura, circulação, umidade e pureza do ar. Descreve os principais tipos de sistemas como unidades centrais, equipamentos individuais, sistemas diretos e indiretos.
O documento discute diversos mecanismos de endurecimento em metais, incluindo redução do tamanho de grão, solução sólida, precipitação, deformação a frio e tratamentos térmicos. Explica como esses mecanismos aumentam a resistência mecânica ao restringir o movimento de discordâncias na estrutura cristalina através da introdução de obstáculos. Fornece exemplos de cada mecanismo e suas aplicações em diferentes ligas metálicas.
Este documento resume los conceptos clave de la hidrodinámica, incluyendo las fuerzas que actúan sobre un fluido en movimiento, las ecuaciones de Euler, y los diferentes regímenes de flujo (laminar vs turbulento) determinados por el número de Reynolds. Explica que el flujo es laminar para números de Reynolds menores a 2000 y turbulento para números mayores a 4000.
1. Aortic stenosis can be caused by rheumatic heart disease, congenital abnormalities of the aortic valve, or age-related degeneration and calcification of the valve.
2. Obstructed left ventricular outflow due to aortic stenosis leads to increased pressure and compensatory hypertrophy of the left ventricle. While cardiac output is maintained at rest, it often fails to rise normally during exertion in severe aortic stenosis.
3. Symptoms of aortic stenosis include angina, syncope, exertional dyspnea, and heart failure, which typically appear when the aortic orifice is reduced to one third of its normal size. Valve replacement surgery is
Aortic regurgitation occurs when the aortic valve does not close properly, allowing blood to flow back into the left ventricle. It can be caused by conditions that damage the aortic valve such as rheumatic fever or a congenital heart defect. Symptoms may include breathlessness, fatigue, and chest pain. Diagnosis is made through echocardiogram which can assess the severity. Treatment depends on severity but may involve lifestyle changes, medications, or aortic valve replacement surgery if symptoms worsen or damage to the heart progresses. Prognosis depends on severity and treatment, with severe untreated cases having a high risk of heart failure or sudden cardiac death.
Este documento describe los principios y leyes de la clasificación por tamaños de partículas minerales. Explica que la clasificación separa partículas en fracciones granulométricas en función de su velocidad de asentamiento en un fluido. Describe las leyes de Stokes y Newton que relacionan la velocidad de asentamiento con el tamaño y densidad de las partículas. También cubre los conceptos de asentamiento libre y obstruido y cómo esto afecta la clasificación.
The document outlines mitral regurgitation (MR), including its definition, causes, progression, signs and symptoms, and diagnostic tests. MR occurs when the mitral valve does not close properly, allowing blood to flow back into the left atrium. It begins as an acute condition but can progress to chronic compensated and decompensated phases. In acute and decompensated phases, symptoms include heart failure signs. Chronic compensated MR often presents without symptoms. Diagnosis involves physical exam, echocardiogram, and other cardiac tests.
دانشگاه شهید بهشتی(مجازی)
استاد : جناب آقای دکتر اصنافی
آموزشیار: سرکار خانم دکتر پاکدامن
رشته : علم اطلاعات و دانش شناسی ( مدیریت اطلاعات)
درس : مبانی کتابداری و علم اطلاعات
تهیه کننده : هانیه شاه میرزا
سال تحصیلی: 1396
Oral history and it's important in historical researchingSaifullahGharwal1
Humans have many things in common with other animals, but the biggest difference between them is that human society is a cultural society. Creates the organizations, systems and structures through which culture is created and developed, but one of the most important aspects of becoming cultural is history. Because we think about ourselves and part of the thinking is related to our past. Our roots are in the past, our moral system, our beliefs, our values and in short all our spirituality and materiality depend on the past. We are the product of the same old culture and we have continued the process of socialization. Culture is a process, an ongoing and changing process that has been going on since time immemorial. An example of culture and past history is cultural heritage. Everything that gives us our past is our cultural heritage. Cultural heritage is a relic of the past that has economic and scientific value in addition to its cultural and historical value.
نوشتن بیان مسئله در پروپوزال، اهمیت موضوع و وجوه تمایز پژوهش به شیوه مناسب، نقش بسیار مهمی در پذیرش یک پروپوزال ایفا می نماید.
این بخش از پژوهش، چرایی و دلایل انجام پروپوزال را مطرح می سازد نوشتن به صورت صحیح بیان مسئله، زمینه و مبنای را برای نوشتن پروپوزال فراهم می سازد.
این مجموعه اسلاید برای درس مبانی کتابداری وعلم اطلاعات توسط دانشجویان؛ زهرامهدیون، فرزانه نصیری، فرهاد مبینی، زیر نظر اساتید راهنما آقای دکتر اصنافی و خانم دکتر پاکدامن تهیه شده است.
The Use of Theory in Information Science Researchsamanehborji
The Use of Theory in Information Science Research
Professor:Maryam Pakdaman (Ph.D.)
Authors:Lynne (E.F.) McKechnie | Karen E. Pettigrew
Students:Faranak Vakilifar | Majid Zamandari | Samaneh Borji
Oral history and it's important in historical researchingSaifullahGharwal1
Humans have many things in common with other animals, but the biggest difference between them is that human society is a cultural society. Creates the organizations, systems and structures through which culture is created and developed, but one of the most important aspects of becoming cultural is history. Because we think about ourselves and part of the thinking is related to our past. Our roots are in the past, our moral system, our beliefs, our values and in short all our spirituality and materiality depend on the past. We are the product of the same old culture and we have continued the process of socialization. Culture is a process, an ongoing and changing process that has been going on since time immemorial. An example of culture and past history is cultural heritage. Everything that gives us our past is our cultural heritage. Cultural heritage is a relic of the past that has economic and scientific value in addition to its cultural and historical value.
نوشتن بیان مسئله در پروپوزال، اهمیت موضوع و وجوه تمایز پژوهش به شیوه مناسب، نقش بسیار مهمی در پذیرش یک پروپوزال ایفا می نماید.
این بخش از پژوهش، چرایی و دلایل انجام پروپوزال را مطرح می سازد نوشتن به صورت صحیح بیان مسئله، زمینه و مبنای را برای نوشتن پروپوزال فراهم می سازد.
این مجموعه اسلاید برای درس مبانی کتابداری وعلم اطلاعات توسط دانشجویان؛ زهرامهدیون، فرزانه نصیری، فرهاد مبینی، زیر نظر اساتید راهنما آقای دکتر اصنافی و خانم دکتر پاکدامن تهیه شده است.
The Use of Theory in Information Science Researchsamanehborji
The Use of Theory in Information Science Research
Professor:Maryam Pakdaman (Ph.D.)
Authors:Lynne (E.F.) McKechnie | Karen E. Pettigrew
Students:Faranak Vakilifar | Majid Zamandari | Samaneh Borji