PowerPoint Presentation On CLOUD COMPUTING

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CLOUD COMPUTING Presentation Transcript:

1. INTRODUCTION
Computing clouds provide computation, software, data access, and storage resources without requiring cloud users to know the location and other details of the computing infrastructure. Cloud computing is a technology that uses the internet and central remote servers to maintain data and applications. A simple example of cloud computing is Yahoo email, Gmail, or Hotmail etc. Cloud computing is broken down into three segments: "application" “storage" and "connectivity."

2. WHAT IS CLOUD COMPUTING
Business applications are moving to the cloud. It’s not just a fad—the shift from traditional software models to the Internet has steadily gained momentum over the last 10 years. Cloud-based apps can be up and running in days or weeks, and they cost less. With a cloud app, you just open a browser, log in, customize the app, and start using it. The latest innovations in cloud computing are making our business applications even more mobile and collaborative, similar to popular consumer apps like Face book and Twitter.

3. Cloud Software as a Service (SaaS) Use provider’s applications over a network Cloud Platform as a Service (PaaS) Deploy customer-created applications to a cloud Cloud Infrastructure as a Service (IaaS) Rent processing, storage, network capacity, and other fundamental computing resources

4. WORKING OF CLOUD COMPUTING
Cloud computing has been changing how most people use the web and how they store their files. It mostly means a grid of computers serving as a service-oriented architecture to deliver software and data. With broadband internet, the need to have the software run on your computer or on a company’s site is becoming less and less essential. 

5. SECURITY ISSUES TO CLOUD COMPUTING
Check for viruses Perform regular operating system and browser updates. Check the forwarding and delegation settings in your account. Use a secure connection when signing in. Clear private data from your browser.

6. FEATURES OF CLOUD COMPUTING
Consumption based billing Rapid elasticity Self service based model Location and device independence

7. MERITS OF CLOUD COMPUTING
Reduced cost Increased Storage Highly Automated Flexibility Vast Range

8. CONCLUSION
cloud computing is truly a revolutionary concept for many business organizations. For managers dealing with the growing demand for IT in their respective organizations, cloud computing presents itself as an all-in-one solution, being able to satisfy the growing IT needs while, at the same time, reducing energy usage-all at an affordable price.

9. Thank You.

PowerPoint Presentation On ADMIXTURES

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ADMIXTURES Presentation Transcript:

1. What Are Admixtures?
Admixtures are chemical substances (other than fine and coarse aggregates, cement, or water), which are added in small amounts just before or during the mixing stage to concrete products.

2. NEED OF ADMIXTURES
Over decades, attempts have been made to obtain concrete with certain desired characteristics such as high compressive strength, high workability, and high performance and durability parameters to meet the requirement of complexity of modern structures.

3. FUNCTION OF ADMIXTURE
To improve workability of fresh concrete
To improve durability by entrainment of air
To reduce the water required
To accelerate setting & hardening & thus to produce high early strength
To aid curing
To impart water repellent / water proofing property

4. To cause dispersion of the cement particles when mixed with water
To retard setting
To improve wear resistance (hardness)
To offset / reduce shrinkage during setting & hardening
To cause expansion of concrete and automatic prestressing of steel
To aerate mortar / concrete to produce a light-weight product

5. To impart colour to concrete
To offset or reduce some chemical reaction
To reduce bleeding
To reduce the evolution of heat

6. Types of Admixtures
Chemical admixtures
Mineral admixtures

7. CHEMICAL ADMIXTURES
Water-reducing admixture / Plasticizers
They achieve a higher strength by decreasing the water cement ratio at the same workability as an admixture free mix. To achieve the same workability by decreasing the cement content so as to reduce the heat of hydration in mass concrete. To increase the workability so as to ease placing in accessible locations

8. Water reduction is more than 5% but less than 12% The commonly used admixtures are Ligno-sulphonates and hydrocarbolic acid salts. Plasticizers are usually based on lignosulphonate, which is a natural polymer, derived from wood processing in the paper industry

9. Super Plasticizers
These are more recent and more effective type of water reducing admixtures also known as high range water reducer. They increase fluidity and following properties: Flowing Self-leveling Self-compacting concrete Penetration and compaction around dense reinforcement

10. For more info. please refer our PPT, Thanks.

PowerPoint Presentation On CLIMATE CHANGE FOR BETTER LIVING

PPT ON CLIMATE CHANGE FOR BETTER LIVING
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CLIMATE CHANGE FOR BETTER LIVING Presentation Transcript:

1. CLIMATE CHANGE is already having
measurable / computable consequences and future impacts are expected to be wide-ranging and costly. How can we adapt to such changes or limit their extent?

2. What makes the climate change……..?
How is climate changing and how has it changed in the past ? How is the climate going to change in the future ? What impacts has already been observed ? What impacts are expected in the future ? How can we adapt to this climate change phenomena ? What are the current trends in greenhouse gas emissions ? What actions can be taken to reduce greenhouse gas emissions ? How can governments create incentives for mitigation ?

3. SOME IMPORTANT TERMINOLOGYES …………..
ADAPTATION – A change in eco systems or inhuman societies that allows them to adjust to the changing conditions of the environment.
AEROSOL – Collection of microscopique particles solid or liquid,suspended in a gas. Natural sources of aerosols include salt particles from sea spray, dust and clay particles from the weathering of rocks. Human activities are often considered pollutants.
ATMOSPHERE – The mass of air surrounding the Earth. The atmosphere consists of nitrogen (78%), oxygen (21%), and traces of other gases such as argon, helium, carbon dioxide, and ozone. It plays an important role in the protection of life on Earth; it absorbs ultraviolet solar radiation and reduces temperature extremes between day and night. CONT…..

4. CLIMATE CHANGE –
Defined by the United Nations Convention on Climate Change as “Change of climate which is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and which is in addition to natural climate variability observed over comparable time periods”
GREENHOUSE GAS – A gas in Earth’s atmosphere, be it of natural or human origin, that absorbs heat radiated by the earth and warms the atmosphere, creating what is commonly known as the greenhouse effect. Water vapour (H2O), carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4), and ozone (O3) are the primary greenhouse gases in the Earth’s atmosphere.
LAND USE – The human use of a piece of land for a certain purpose. Changes in land use may have an impact on the properties of the surface, which can have implication for the climate at a local or a global scale.

5. Climate Change…….?
A long term shift in the statistics of the weather (including its averages). Normal expected average values for temperature and precipitation for a given place and time of year from one decade to the next. Last 2 decades have been the warmest period in the entire global instrumental temperature record, starting in the mid-19th century.

6. 5 Interglacial Periods…..
The Greenland Ice Cores reveal Warm Period 1450–1300 BC, Roman Warm Period 250–0 BC, Mediaeval Warm Period 800–1100 AD, Little Ice Age and the late 20th Century, Warm Period 1900–2012 AD.

7. Climate Changing …….
Natural variability Interactions among the Atmosphere Ocean Land Changes in the amount of Solar Radiation reaching the earth.

8. The Earth’s climate is influenced by……………..
Energy coming from the sun Properties of the Earth’s surface, which determine how much of this solar energy is retained or reflected back to space. Amount of GREENHOUSE GASES & AEROSOLS in the atmosphere Carbon Dioxide (CO2), Methane(CH4) & Nitrous Oxide (N2O) have increased since the beginning of industrial revolution. Human activities Burning of fossil fuels, land use change and agriculture. Atmospheric concentration of CO2 is highest in the last 6,50 ,000 years and has been growing faster in the last 10 years, since the beginning of measurements around 1960

9. Overall human activities since 1750 ………..
Increasing air and ocean temperatures, widespread melting of snow and ice, and rising sea levels. Over the last 100 years global temperature has increased by 0.74°C. Global sea level has risen by 17 cm during the 20th century, due to melting of snow and ice. Change in - Arctic temperatures and ice, ocean salinity, wind patterns, droughts, precipitations, frequency of heat waves and intensity of tropical cyclones. Most of the increase in global temperature observed over the past 50 years is very likely due to human emissions of greenhouse gases.

10. For more info. please check our PPT, Thanks.