هذا البحث بمثابة مدخل لتقنية النانو واستخداماتها في مجال البناء وجاء هذا البحث لشح المصادر العربية التي تكلمت عن هذا المجال وحاولت ان اجمع ملخص مفيد يعين الدارس على فهم هذه التقنية
هذا البحث بمثابة مدخل لتقنية النانو واستخداماتها في مجال البناء وجاء هذا البحث لشح المصادر العربية التي تكلمت عن هذا المجال وحاولت ان اجمع ملخص مفيد يعين الدارس على فهم هذه التقنية
127
مبادرة
#تواصل_تطوير
المحاضرة ال 127 من المبادرة مع
دكتور / خالد محمد زكريا
استاذ م الكيمياء الاشعاعية –
هيئة الطاقة الذرية المصرية
بعنوان:
"اهمية التكنولوجيا النووية في دعم وتطوير انظمة الصناعة"
التاسعة مساء توقيت القاهرة
العاشرة. مساء توقيت مكة المكرمة
السبت 18سبتمبر 2021
وذلك عبر تطبيق زووم من خلال الرابط
https://us02web.zoom.us/meeting/register/tZwvfu6orDMrH9QQKt0ySuBmXaKOXAD1-iO1
محاور المحاضرة:
التكنولوجيا النووية وعملية التنمية المستدامة
التكنولوجيا النووية وتوطين ونقل التقانة
استثمار مخرجات البحث والعقول المصرية في دعم منظومة التكنولوجيا النووية
دور التكنولوجيا النووية في الطب
دور التكنولوجيا النووية في الزراعة
دور التكنولوجيا النووية في الصناعة
دور التكنولوجيا النووية في الصناعات الغذائية
دور التكنولوجيا النووية في انتاج الطاقة
علما ان هناك بث مباشر للمحاضرة على القنوات الخاصة بجمعية المهندسين المصريين
ونأمل أن نوفق في تقديم ما ينفع المهندس ومهمة الهندسة في عالمنا العربي
والله الموفق
للتواصل مع إدارة المبادرة عبر قناة التليجرام
https://t.me/EEAKSA
ومتابعة المبادرة والبث المباشر عبر نوافذنا المختلفة
رابط اللينكدان والمكتبة الالكترونية
https://www.linkedin.com/company/eeaksa-egyptian-engineers-association/
رابط قناة التويتر
https://twitter.com/eeaksa
رابط قناة الفيسبوك
https://www.facebook.com/EEAKSA
رابط قناة اليوتيوب
https://www.youtube.com/user/EEAchannal
رابط التسجيل العام للمحاضرات
https://forms.gle/vVmw7L187tiATRPw9
ملحوظة : توجد شهادات حضور مجانية لمن يسجل فى رابط التقيم اخر المحاضرة.
تتراوح الاشعة الكهرومغناطيسية التي تهمنا في مجال التحليل الكيمياوي بصورة عامة من اشعة كاما ذات الطاقة العالية الى موجات الراديو ذات الطاقة الواطئة ويطلق على مدى الاشعة من اشعة كاما الى موجات الراديو بالطيف الكهرومغناطيسية.
ان العين البشرية تكون حساسة فقط لنطاق ضيق من الطيف يقع بين (400-800 نانومتر) ويسمى بالضوء المرئي اما المناطق الاخرى من الطيف فهي مناطق غير مرئية للعين البشرية
تعود طول الموجة الاقل من 400 نلنومتر لللاشعة فوق البنفسجية والاكثر من 750 نانومتر للاشعة تحت الحمراء. ان المركبات العضوية المشبعة او الكحولات او الماء تمتص الضوء على طول موجي قدرة 185 نانومتر مما يسهل استعمالها كمذيبات في المنطقة فوق البنفسجية.
تفاعل الاشعة الكهرومغناطيسي مع المادة
ان امتصاص مادة ما للاشعة الكهرومغناطيسية يؤدي الى زيادة طاقة الاشعة الكهرومغناطيسية الممتصة وتصبح المادة غنية بالطاقة ومن الطبيعي انة كلما كانت كمية الطاقة الممتصة اكبر كلما كان التهيج اكثر. بعد ذلك تفقد المادة الطاقة التي امتصتها وترجع الى حالتها الاصلية اي ان محتواها من الطاقة يصبح واطئا كما موضح بالمعادلة والشكل التالي
This document provides an overview of nanotechnology. It defines nanotechnology as the study and engineering of matter at the nanoscale, or atomic level. The document outlines the history of nanotechnology from its conception in 1959 to modern applications. Key tools used in nanotechnology like atomic force microscopes and carbon nanotubes are described. The document also discusses different approaches (top-down vs bottom-up), materials used, and applications of nanotechnology in areas like drugs, fabrics, electronics, and computers. It provides examples of how nanotechnology is enhancing performance in these domains.
This document provides an overview of nanotechnology and various growth methods for nanostructures. It discusses that nanotechnology involves working at the molecular level to create structures with new properties. There are two main approaches for producing nanostructures: top-down, which makes smaller components from larger ones; and bottom-up, which builds complex structures from molecular components. Growth methods are classified by temperature as either high temperature (a few hundred degrees C), using methods like vapor-liquid-solid, or low temperature (less than 100 degrees C), which allows use of softer substrates. The document also notes how properties change at the nanoscale due to different dominant forces.
Nanotechnology: Basic introduction to the nanotechnology.Sathya Sujani
This simple presentation will help you to understand the every aspects of nanotechnology including basic definition and it's practical application in a very simple yet precise manner.
Nano-technology in restorative dentistry and dental caries management Ali Alarasy
This document provides an overview of the applications of nanotechnology in restorative dentistry and dental caries management. It discusses 3 main topics: 1) remineralization of initial caries lesions using casein phosphopeptide-amorphous calcium phosphate nanocomplexes and hydroxyapatite nanoparticles, 2) addition of calcium-, phosphate-, and fluoride-releasing nanofillers to dental composites to prevent secondary caries, and 3) strategies for biomimetic enamel synthesis and repair of caries lesions using enamel-like nanomaterials. The focus is on how nanotechnology can help with remineralization, antibacterial effects, and mechanical properties of dental materials to better manage dental caries.
This document introduces nano-materials and discusses their properties and applications. It defines nano-materials as low-dimensional semiconductor structures between a few nanometers to tens of nanometers in size, including quantum wells, wires, and dots. Electron behavior changes from plane waves in bulk semiconductors to quantized energy levels in nano-structures. Nano-materials are of interest because they combine advantages of semiconductors and atomic systems by allowing controllable electron confinement. Common fabrication methods include top-down patterning and bottom-up self-assembly. Nano-materials exhibit properties like ballistic transport, tunneling, and discrete optical transitions useful for applications in lasers, detectors, and other optoelectronic devices
This document discusses nanotechnology and its applications. It begins with an introduction to nanotechnology, defining a nanometer and describing how nanotechnology works at the molecular scale. It then outlines several key applications of nanotechnology, including improving medicine through targeted drug delivery and artificial organs, enabling more powerful supercomputing through molecular circuits, and using nanotechnology to clean the environment and purify water and air. The document provides an overview of the goals, pioneers, approaches, techniques and many potential benefits of nanotechnology.
This document provides an overview of nanotechnology and its history. It discusses key terms like nanoscale and nanotechnology. Some important developments include the discovery of buckyballs in 1980 and carbon nanotubes in 1991. The document also outlines several types of nanotechnology like nano-materials, nano-electronics, nano-robotics and their applications. Nanotechnology is seen as having great potential impacts across many fields like engineering, electronics, medicine and more.
Nanotechnology involves manipulating matter at the nanoscale, which is approximately 1 to 100 nanometers. It has applications in many areas such as medicine, energy, and computing. Some advantages of nanotechnology include materials that are stronger, lighter, cheaper, and more precise. However, there are also concerns about potential negative health effects and how nanotechnology could enable new types of weapons.
The document provides information about the Centre for Automotive Technology (CAT) at Cranfield University in the UK. CAT conducts research in areas like motorsport, off-road vehicle dynamics, materials including nanotechnology. It has specialist facilities for testing vehicles and materials. The centre also performs nanosafety research to simulate and study the release of nanoparticles from products. It is developing nanocomposites and nanopigments for industrial applications like lightweight vehicle components.
This document discusses nanomaterials and their characterization techniques. It mentions quantum dots, fullerenes, nanoparticles, nanotubes, nanofibers and nanowires as examples of nanomaterials. Common fabrication methods for nanomaterials include chemical vapor deposition. Characterization can be done using techniques such as transmission electron microscopy, scanning electron microscopy, X-ray diffraction, atomic force microscopy, and scanning tunneling microscopy. Applications of nanomaterials include use in electronics, optics and biomedical areas.
127
مبادرة
#تواصل_تطوير
المحاضرة ال 127 من المبادرة مع
دكتور / خالد محمد زكريا
استاذ م الكيمياء الاشعاعية –
هيئة الطاقة الذرية المصرية
بعنوان:
"اهمية التكنولوجيا النووية في دعم وتطوير انظمة الصناعة"
التاسعة مساء توقيت القاهرة
العاشرة. مساء توقيت مكة المكرمة
السبت 18سبتمبر 2021
وذلك عبر تطبيق زووم من خلال الرابط
https://us02web.zoom.us/meeting/register/tZwvfu6orDMrH9QQKt0ySuBmXaKOXAD1-iO1
محاور المحاضرة:
التكنولوجيا النووية وعملية التنمية المستدامة
التكنولوجيا النووية وتوطين ونقل التقانة
استثمار مخرجات البحث والعقول المصرية في دعم منظومة التكنولوجيا النووية
دور التكنولوجيا النووية في الطب
دور التكنولوجيا النووية في الزراعة
دور التكنولوجيا النووية في الصناعة
دور التكنولوجيا النووية في الصناعات الغذائية
دور التكنولوجيا النووية في انتاج الطاقة
علما ان هناك بث مباشر للمحاضرة على القنوات الخاصة بجمعية المهندسين المصريين
ونأمل أن نوفق في تقديم ما ينفع المهندس ومهمة الهندسة في عالمنا العربي
والله الموفق
للتواصل مع إدارة المبادرة عبر قناة التليجرام
https://t.me/EEAKSA
ومتابعة المبادرة والبث المباشر عبر نوافذنا المختلفة
رابط اللينكدان والمكتبة الالكترونية
https://www.linkedin.com/company/eeaksa-egyptian-engineers-association/
رابط قناة التويتر
https://twitter.com/eeaksa
رابط قناة الفيسبوك
https://www.facebook.com/EEAKSA
رابط قناة اليوتيوب
https://www.youtube.com/user/EEAchannal
رابط التسجيل العام للمحاضرات
https://forms.gle/vVmw7L187tiATRPw9
ملحوظة : توجد شهادات حضور مجانية لمن يسجل فى رابط التقيم اخر المحاضرة.
تتراوح الاشعة الكهرومغناطيسية التي تهمنا في مجال التحليل الكيمياوي بصورة عامة من اشعة كاما ذات الطاقة العالية الى موجات الراديو ذات الطاقة الواطئة ويطلق على مدى الاشعة من اشعة كاما الى موجات الراديو بالطيف الكهرومغناطيسية.
ان العين البشرية تكون حساسة فقط لنطاق ضيق من الطيف يقع بين (400-800 نانومتر) ويسمى بالضوء المرئي اما المناطق الاخرى من الطيف فهي مناطق غير مرئية للعين البشرية
تعود طول الموجة الاقل من 400 نلنومتر لللاشعة فوق البنفسجية والاكثر من 750 نانومتر للاشعة تحت الحمراء. ان المركبات العضوية المشبعة او الكحولات او الماء تمتص الضوء على طول موجي قدرة 185 نانومتر مما يسهل استعمالها كمذيبات في المنطقة فوق البنفسجية.
تفاعل الاشعة الكهرومغناطيسي مع المادة
ان امتصاص مادة ما للاشعة الكهرومغناطيسية يؤدي الى زيادة طاقة الاشعة الكهرومغناطيسية الممتصة وتصبح المادة غنية بالطاقة ومن الطبيعي انة كلما كانت كمية الطاقة الممتصة اكبر كلما كان التهيج اكثر. بعد ذلك تفقد المادة الطاقة التي امتصتها وترجع الى حالتها الاصلية اي ان محتواها من الطاقة يصبح واطئا كما موضح بالمعادلة والشكل التالي
This document provides an overview of nanotechnology. It defines nanotechnology as the study and engineering of matter at the nanoscale, or atomic level. The document outlines the history of nanotechnology from its conception in 1959 to modern applications. Key tools used in nanotechnology like atomic force microscopes and carbon nanotubes are described. The document also discusses different approaches (top-down vs bottom-up), materials used, and applications of nanotechnology in areas like drugs, fabrics, electronics, and computers. It provides examples of how nanotechnology is enhancing performance in these domains.
This document provides an overview of nanotechnology and various growth methods for nanostructures. It discusses that nanotechnology involves working at the molecular level to create structures with new properties. There are two main approaches for producing nanostructures: top-down, which makes smaller components from larger ones; and bottom-up, which builds complex structures from molecular components. Growth methods are classified by temperature as either high temperature (a few hundred degrees C), using methods like vapor-liquid-solid, or low temperature (less than 100 degrees C), which allows use of softer substrates. The document also notes how properties change at the nanoscale due to different dominant forces.
Nanotechnology: Basic introduction to the nanotechnology.Sathya Sujani
This simple presentation will help you to understand the every aspects of nanotechnology including basic definition and it's practical application in a very simple yet precise manner.
Nano-technology in restorative dentistry and dental caries management Ali Alarasy
This document provides an overview of the applications of nanotechnology in restorative dentistry and dental caries management. It discusses 3 main topics: 1) remineralization of initial caries lesions using casein phosphopeptide-amorphous calcium phosphate nanocomplexes and hydroxyapatite nanoparticles, 2) addition of calcium-, phosphate-, and fluoride-releasing nanofillers to dental composites to prevent secondary caries, and 3) strategies for biomimetic enamel synthesis and repair of caries lesions using enamel-like nanomaterials. The focus is on how nanotechnology can help with remineralization, antibacterial effects, and mechanical properties of dental materials to better manage dental caries.
This document introduces nano-materials and discusses their properties and applications. It defines nano-materials as low-dimensional semiconductor structures between a few nanometers to tens of nanometers in size, including quantum wells, wires, and dots. Electron behavior changes from plane waves in bulk semiconductors to quantized energy levels in nano-structures. Nano-materials are of interest because they combine advantages of semiconductors and atomic systems by allowing controllable electron confinement. Common fabrication methods include top-down patterning and bottom-up self-assembly. Nano-materials exhibit properties like ballistic transport, tunneling, and discrete optical transitions useful for applications in lasers, detectors, and other optoelectronic devices
This document discusses nanotechnology and its applications. It begins with an introduction to nanotechnology, defining a nanometer and describing how nanotechnology works at the molecular scale. It then outlines several key applications of nanotechnology, including improving medicine through targeted drug delivery and artificial organs, enabling more powerful supercomputing through molecular circuits, and using nanotechnology to clean the environment and purify water and air. The document provides an overview of the goals, pioneers, approaches, techniques and many potential benefits of nanotechnology.
This document provides an overview of nanotechnology and its history. It discusses key terms like nanoscale and nanotechnology. Some important developments include the discovery of buckyballs in 1980 and carbon nanotubes in 1991. The document also outlines several types of nanotechnology like nano-materials, nano-electronics, nano-robotics and their applications. Nanotechnology is seen as having great potential impacts across many fields like engineering, electronics, medicine and more.
Nanotechnology involves manipulating matter at the nanoscale, which is approximately 1 to 100 nanometers. It has applications in many areas such as medicine, energy, and computing. Some advantages of nanotechnology include materials that are stronger, lighter, cheaper, and more precise. However, there are also concerns about potential negative health effects and how nanotechnology could enable new types of weapons.
The document provides information about the Centre for Automotive Technology (CAT) at Cranfield University in the UK. CAT conducts research in areas like motorsport, off-road vehicle dynamics, materials including nanotechnology. It has specialist facilities for testing vehicles and materials. The centre also performs nanosafety research to simulate and study the release of nanoparticles from products. It is developing nanocomposites and nanopigments for industrial applications like lightweight vehicle components.
This document discusses nanomaterials and their characterization techniques. It mentions quantum dots, fullerenes, nanoparticles, nanotubes, nanofibers and nanowires as examples of nanomaterials. Common fabrication methods for nanomaterials include chemical vapor deposition. Characterization can be done using techniques such as transmission electron microscopy, scanning electron microscopy, X-ray diffraction, atomic force microscopy, and scanning tunneling microscopy. Applications of nanomaterials include use in electronics, optics and biomedical areas.
The document summarizes various topics in nanotechnology commercial activity, including fuel cells, encapsulation, nanoparticles, nanocomposites, and self assembly. Fuel cells are estimated to be a $100 billion global market by 2010. Nanoparticles are used in applications such as sunscreen, catalysts, and corrosion resistance. Nanocomposites combine nanomaterials with other materials to produce enhanced properties. Self assembly uses natural forces to form device features at lower costs than traditional lithography methods.
تضمن اللقاء المحاور التالية:
• أهمية العمل على بناء وتطوير المشاريع العتادية.
• الخطوات الأساسية لبناء مشروع.
• الأدوات والوسائل التي يمكن الاستفادة منها لبناء المشاريع.
• أمثلة لمشاريع ناجحة عربياً ومحلياً.
• مجتمع ويكيلوجيا ودوره في دعم ثقافة المشاريع.
قدمه كل من: يحيى طويل - الحسن محمد علي - شيراز شوباصي - سنا حواصلي
وذلك في مسرح البناء الأحمر في كلية الهندسة الميكيانيكية والكهربائية في دمشق في 11 آذار 2015
فيديو اللقاء:
http://youtu.be/80I4TJpxHTs
The document discusses ADO.NET and provides an overview of its architecture and programming model. It describes how ADO.NET provides a unified way to access different data sources through a common set of interfaces and classes. It also outlines connection-oriented and disconnected scenarios in ADO.NET and provides a code example that connects to a SQL Server database, executes a command, and reads results using ADO.NET interfaces like IDbConnection and IDataReader.
This document provides information about books on interview questions for .NET and SQL Server positions. It includes sample questions from the books. The author makes the books available at low costs and also provides information on how to purchase them from different locations in India or online. Career counseling services are also offered for those seeking guidance on their technical career paths.
This document provides instructions for creating and using custom user controls and web server controls in ASP.NET. It discusses how to create user controls using .ascx files, add controls and code to them, and include them on web pages. User controls inherit from the UserControl class and can handle their own events. The document also covers how to create templated user controls and web server controls that take advantage of design-time support in Visual Studio.
This document provides information about purchasing books on .NET interview questions and SQL Server interview questions written by Shivprasad Koirala. It discusses where the books can be purchased in India and other countries. It also provides sample questions from the books and information about how to contact the author. Career counseling services are offered for software professionals and details are provided about a small career path institute run by the author in Mumbai, India.
- The document discusses the many negative health effects of smoking cigarettes, including increased risk of various cancers, heart disease, fertility issues, and premature birth.
- Smoking damages nearly every organ in the body and contains over 4000 chemicals and 400 toxins, shortening a smoker's life by an average of 11 minutes per cigarette.
- Worldwide, tobacco kills over 5 million people per year and is a major risk factor for several leading causes of death. If current trends continue, tobacco could kill over 1 billion people in the 21st century.
The document discusses 10 different animal species that can potentially transmit influenza viruses to humans. It begins by providing context about the origins of influenza in pigs in 1930. It then lists chickens, pigs, ducks, geese, turkeys, horses, dogs, cats, seals, and whales as animals known to carry influenza viruses and discusses specific cases or risks of transmission to humans through direct contact or underprepared meat consumption. Experts note that while transmission risks exist, most require close contact between infected animals and humans under the right conditions.
The listening module of the IELTS exam can be one of the easiest sections for average English users to score high marks. With practice of prior tests, understanding the pattern of increasing difficulty, and smart time management of the questions, test takers can perform well. It is important to go with the flow of the recording, not getting stuck on any single question, and remembering that speakers sometimes correct themselves. Consistent practice helps prepare for the types of difficulties that may arise.
22d2 optimal assembly line balancing222harkesh singh
The document discusses optimal assembly line balancing. It defines assembly line balancing as assigning tasks to workstations to comply with precedence relationships, not exceed the cycle time, and minimize idle time. It describes calculating the cycle time, minimum number of workstations, and line efficiency. It then explains how tabu search can be used to solve assembly line balancing problems by minimizing workstations given a cycle time or minimizing cycle time given workstations. As a case study, it discusses how an automotive company uses this approach to optimize assembly lines.
Homeowners are rushing to refinance their mortgages due to a surge in mortgage rates dropping to a 52-year low in December 1956. According to the Mortgage Bankers Association, home loan applications increased over 30% last week, with 4/5 of applicants looking to refinance at the newly lowered rates rather than purchase new homes. The document advertises for a mortgage refinance provider called NYMortgageDepo, encouraging homeowners to refinance their loans now before rates potentially rise again.
Refinance your home loans and mortgages at NYMortgageDepo, as rates have dropped to 52-year lows similar to 1956. According to recent data, over 30% of recent home loan applications were for refinancing existing mortgages to take advantage of the low rates. NYMortgageDepo can help homeowners refinance their loans at these favorable rates through their website or by calling their customer service line.
Este documento presenta una breve descripción de varios lugares de interés turístico y cultural en el departamento de Boyacá, Colombia. Menciona sitios como Tunja, la capital; el Puente de Boyacá y la Batalla de Boyacá; Raquira y sus artesanías; Sora, Toca y otros municipios; el Lago de Sochagota; Paipa y su caserío salitre; Monguí y su portón de oceta; Fúquene y su laguna; Sogamoso y su templo del sol; Samacá y Puntal