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Teatro origininal
Uma companhia de teatro de rua francesa se apresentou na praça em frente à Catedral de Notre Dame em Paris, atraindo uma multidão com um de seus melhores espetáculos, que contou com fantoches e personagens gigantes.
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This Presentations is for the self development purpose, with motivational thoughts.
El Origen del Universo.La Génesis de los elementos:Polvo de estrella.Explorac...
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Teatro origininal
Uma companhia de teatro de rua francesa se apresentou na praça em frente à Catedral de Notre Dame em Paris, atraindo uma multidão com um de seus melhores espetáculos, que contou com fantoches e personagens gigantes.
Thought for the day
This Presentations is for the self development purpose, with motivational thoughts.
El Origen del Universo.La Génesis de los elementos:Polvo de estrella.Explorac...
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Perfect colour combos to wear in winter
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Hacker Halted
Atlanta, GA
Thursday, October 16 2014
In a post-apocalyptic world, communication is going to be crucial for the survival and zombies alike. Long range, paid, and mobile communication is going to be a must in order to properly organize, defend and ultimately survive. So naturally wireless communication is going to be a critical infrastructure but how will it hold up? Can it be leveraged to give us the upper hand? The idea behind this talk is to demonstrate how existing 802.11 technologies can be used to not only provide the critical communication medium needed to organize but that we can also use the same technology to disrupt the zombie efforts to do the same. In this talk we will look at some of the weaknesses in wireless technologies that can be used to compromise the zombies communications, find their location to prepare defenses, disrupt the flow of information and if neeed be, take down the entire system. The truth is that we already have a world full of zombies in the form of consumers and the threat to their beloved communication mediums actually put them at risk. At the end of the talk I will show hos this stuff is not only possible but how it is happening in the world today.
James rodríguez
James Rodríguez es un futbolista colombiano nacido en 1991 que juega como mediocampista ofensivo o segundo delantero. Se destacó en la Copa Mundial de Fútbol de 2014 anotando seis goles y fue fichado por el Real Madrid por €80 millones. Pasó su infancia en Ibagué jugando al fútbol y desarrollando su talento.
Annurev lawsocsci-102209-152904
This document summarizes an article about resistance to legality. It discusses how the contingency and indeterminacy of legality allows for challenges to its power and authority, creating a space for resistance. It examines why resistance occurs, the strategies used in resistance, and the outcomes of resistance acts. Specifically, it notes that resistance stems from feelings of exclusion, unfair treatment, or unjust power distributions under the law. Resistance aims to transform power relationships and present alternative visions of how law should govern through new norms and rights.
Black veil brides
Black Veil Brides es una banda estadounidense de metal alternativo formada en 2006 en Cincinnati, Ohio. Su estilo musical y vestimenta han sido comparados con bandas como Kiss, Mötley Crüe y Scorpions. Han lanzado 4 álbumes de estudio desde 2007, incluyendo su primer álbum We Stitch These Wounds en 2010 que alcanzó el número 36 en el Billboard 200 y el número 1 en el conteo de álbumes independientes. Su segundo álbum Set The World On Fire de 2011 debutó en el número 17 del Billboard 200.
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Hacker Halted 2014: When Zombies Take to the Airwaves
Hacker Halted
Atlanta, GA
Thursday, October 16 2014
In a post-apocalyptic world, communication is going to be crucial for the survival and zombies alike. Long range, paid, and mobile communication is going to be a must in order to properly organize, defend and ultimately survive. So naturally wireless communication is going to be a critical infrastructure but how will it hold up? Can it be leveraged to give us the upper hand? The idea behind this talk is to demonstrate how existing 802.11 technologies can be used to not only provide the critical communication medium needed to organize but that we can also use the same technology to disrupt the zombie efforts to do the same. In this talk we will look at some of the weaknesses in wireless technologies that can be used to compromise the zombies communications, find their location to prepare defenses, disrupt the flow of information and if neeed be, take down the entire system. The truth is that we already have a world full of zombies in the form of consumers and the threat to their beloved communication mediums actually put them at risk. At the end of the talk I will show hos this stuff is not only possible but how it is happening in the world today.
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Black veil brides
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Social Outlook - Parliamentary Days 2014
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Tensile, Impact and Hardness Testing of Mild Steel
The main purpose of this report is to study the mechanical properties and
failure mode of mild steel. Three types of standard tests i.e. tensile test, impact
test, and hardness test were conducted on the standard specimens of mild steel.
From the tests, results were obtained; Tensile strength, Impact strength, and
hardness were calculated. It was observed that Tensile Strength, Impact Strength
and Hardness of MS specimen were 1450.833 N/mm², 29.5 J & 59.25 HRB.
Fuel cladding materials
The document discusses fuel cladding materials used in nuclear reactors. It describes aluminum alloys as a common cladding material for research reactors operating below 100°C due to its low neutron absorption, high thermal conductivity, and corrosion resistance at moderate temperatures. Specifically, aluminum alloy types 1100, 5000, 6000, AA6061, AA5456, and AA5052 are used as cladding. However, aluminum alloys lose strength and have corrosion problems at higher temperatures. While alloying can improve properties, it also increases neutron absorption.
Definitions
Capacitor
Curie temperature
Dielectric constant (k)
Dielectric Strength
Doping
Drift velocity
Electrostriction
Fermi energy
Ferroelectric
Forward bias
Hysteresis loop
Integrated circuit
Intrinsic semiconductor
p-n junction
Piezoelectric
Polarization
Rectifier
Superconductor
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Transistor
Coercivity
Diamagnetism
Domains
Ferrimagnetism
Magnetic permeability
Magnetic susceptibility
Permanent magnet
Soft magnet
Characteristic spectrum
Continuous spectrum
Fluorescence
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Laser
Luminescence
Phosphorescence
Photoconduction
Photons
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Solar cell
Thermal emission
X-rays
Properties of materials / Mechanical Properties of materials
The document discusses various mechanical properties of materials including strength, elasticity, stiffness, plasticity, ductility, malleability, brittleness, toughness, hardness, impact strength, resilience, fatigue, and creep. It explains these properties and how they are evaluated using stress-strain diagrams and testing machines. The properties are important for engineers to understand how materials will behave under different loading conditions for machine and structural design.
Intergranular Corrosion
Intergranular Corrosion
Causes and Mechanism Intergranular Corrosion Types Of Intergranular Corrosion
Hardening (Heat treatment) Quenching
The document discusses various aspects of hardening hypoeutectoid and hypereutectoid steels. It explains that hardening involves heating steel to the appropriate temperature, holding, and then rapidly quenching to form martensite. Factors like chemical composition, part size/shape, heating/cooling rates, and quenchant properties influence the hardening process and final properties. Different hardening methods like direct, stage, and self-tempering quenching are also summarized.
Extrusion
Extrusion is a process that uses pressure to force heated metal material through a die to create parts with a constant cross-section. There are two main types of extrusion: direct and indirect. Direct extrusion involves pushing the material through the die in the same direction as the ram movement, while indirect extrusion moves the material in the opposite direction of the ram. Extrusion can be performed hot or cold depending on the material, with hot extrusion allowing for more complex shapes from more readily extrudable metals like aluminum. Proper die material and lubrication are important for reducing friction during extrusion.
Cathode Ray Oscilloscope CRO
This document provides an overview of cathode ray oscilloscopes (CROs). It discusses the introduction and basic diagram of a CRO, describing the main components of the cathode ray tube. It also covers multi-input oscilloscopes, describing the alternate and chopped modes of dual trace oscilloscopes and methods for generating dual beams. Additionally, it discusses Lissajous patterns generated from two input signals and how they can be used to measure frequency and phase. Finally, it provides an overview of digital storage oscilloscopes, including their block diagram and advantages over analog storage oscilloscopes.
Eight forms of corrosion
The document summarizes the 8 main forms of corrosion that can occur in metals. It begins by explaining that corrosion is a natural process that converts refined metals back into more stable forms, driven by thermodynamics. It then describes the key elements that form an electrochemical corrosion cell and discusses various factors that influence corrosion rates. The main types of corrosion covered are uniform corrosion, localized corrosion (including galvanic and crevice corrosion), and stress corrosion cracking. Visual examples of each type of corrosion are provided.
Non-destructive Testing
Non-destructive testing (NDT) allows inspection of materials and components without damaging them. Common NDT methods include visual testing, magnetic particle inspection, dye penetrant testing, radiography, ultrasonic testing, and eddy current testing. These methods are used to detect surface or internal flaws in materials and evaluate characteristics without impairing future usefulness or serviceability. NDT plays an important role in quality control and safety across industries such as aerospace, automotive, and energy.
Non-traditional manufacturing processes
This document provides information on non-traditional manufacturing processes. It defines non-traditional processes as those that remove material using mechanical, thermal, electrical or chemical energy without direct tool-workpiece contact. Several non-traditional processes are described in detail, including ultrasonic machining, water jet machining, abrasive jet machining, electrochemical grinding, and chemical milling. Non-traditional processes allow hard and brittle materials to be machined without damage and with better surface finish compared to traditional processes. They find applications in industries such as aerospace, electronics, and automotive.
Pakistan
Pakistan is located in South Asia between India and Afghanistan. It has a population of over 170 million people and Urdu is the official language. Some key facts about Pakistan include:
- It has the 7th largest standing army and is the 6th country to develop nuclear weapons.
- Major industries include textiles, food processing, and pharmaceuticals. Agriculture and services are the largest sectors of the economy.
- Pakistan has several notable achievements including being home to the largest volunteer ambulance network and among the largest producers of wheat, rice, and cotton.
Terrorism in pakistan causes & remedies
The document discusses the causes and remedies of terrorism in Pakistan. It notes that terrorism has taken various forms throughout history for different political purposes. In Pakistan specifically, the porous border with Afghanistan allowed al-Qaeda and Taliban militants to take refuge after the US invasion. This, combined with political and economic grievances among tribal groups, created space for militant organizations to operate. The document outlines several types and motivations of terrorism in Pakistan, including religiously-motivated groups, sectarian violence, and separatist movements in regions like Balochistan. It argues that effectively addressing the root political and economic causes, in addition to military operations, is needed to counter the terrorist threat.
Heat Treatment
This document discusses various heat treatment processes for steels including annealing, normalizing, hardening, tempering, and case hardening. It explains that annealing involves heating metals above or below critical temperatures and slowly cooling to make the metal soft. Hardening involves heating steel above its critical temperature then quenching in water to form martensite and make the metal very hard. Tempering is used after hardening to reduce brittleness by reheating to 220-300 degrees C. Case hardening, such as carburizing or nitriding, adds carbon or nitrogen to the surface layer to harden low-carbon steels. Methods of measuring temperature in furnaces like pyrometers and Seger cones are also summarized
Atomic Bonding
Atomic bonding involves interatomic forces that determine many material properties. Primary bonding includes ionic bonding via electrostatic attraction between ions, covalent bonding by electron sharing, and metallic bonding from delocalized electrons binding positive ion cores. Secondary bonding includes weaker London dispersion forces from induced atomic dipoles, and dipole-dipole interactions between polar molecules. Bonding energy varies between types and affects properties like melting temperature.
Metallurgical properties of cast irons
The document discusses various types of cast iron, their microstructures, properties, production methods and applications. It describes the microstructures of gray cast iron, white cast iron, ductile cast iron and malleable cast iron. The key types are defined by the form of carbon in the microstructure, such as graphite flakes, nodules or carbide phases. The document also examines the solidification and processing factors that determine the carbon structure.
PYROMETER
A pyrometer is a non-contact device that measures the surface temperature of an object by detecting the thermal radiation it emits. Modern pyrometers became available in 1901 with the development of the disappearing filament pyrometer. Issues with early pyrometers relying on emissivity led to the development of ratio or two-color pyrometers. There are different types of pyrometers including optical, radiation, digital, and infrared pyrometers that use various detectors like thermopiles, photocells, bolometers, and thermistors. Pyrometers are useful for measuring temperatures of moving or inaccessible objects and are widely used in industries like smelting, heat treatment, and steam boilers.
Muffle furnace
A muffle furnace is a furnace that heats materials through radiant heat from insulated walls rather than direct flame contact. It consists of a vented heating chamber, temperature controller, and safety features. Muffle furnaces are commonly used in laboratories and industry for applications requiring precise, high temperatures like glass fusing, enamel coating, and metallurgical testing. They heat materials through conduction, convection and radiation from electrical heating elements inside insulating walls, allowing for greater temperature control and isolation of samples from combustion byproducts compared to other furnace types.
Atmospheric Corrosion
Atmospheric corrosion is a major cause of degradation and failure of metals exposed to outdoor and indoor environments. It accounts for significant economic losses as corroded metals must be replaced. While atmospheres are typically classified as industrial, marine, rural, or indoor, most real-world environments involve mixtures of conditions. Atmospheric corrosion occurs via localized corrosion cells and is influenced by factors like pollution, humidity, and proximity to salt or chemical sources. Proper material selection and protection methods are needed to prevent atmospheric corrosion in various environmental conditions.
Erosion Corrosion
Erosion corrosion occurs when the rate of material deterioration increases due to the combined effects of corrosion and mechanical wear from fluid flow. It can occur in pipes, valves, pumps and other equipment exposed to flowing liquids or gases. The mechanism involves turbulent flow damaging protective surface films and exposing the bare metal to chemical attack. Common signs are grooves, holes and valleys in the direction of flow. Prevention methods include design modifications to reduce turbulence, removing abrasive particles from the fluid, protective coatings, cathodic protection, and using more corrosion resistant materials.
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