McDonald's in LuganoSwitzerland McDonald's has become emblematic of globalizationsometimes referred to as the " McDonaldization " of society. The Economist newspaper uses the " Big Mac Index ":
Anatomy of a photovoltaic PV cell. Solar-electric PV cell types. Diagram of a batteryless grid-tied solar-electric system. Photovoltaic PV modules make electricity from sunlight, and are marvelously simple, effective, and durable.
They sit in the sun and, with no moving parts, can run your appliances, charge your batteries, or make energy for the utility grid.
Discovered in by French physicist Alexandre-Edmund Becquerel, the photovoltaic effect describes the way in which PV cells create electricity from the energy residing in photons of sunlight. With the energy from the photon, the electron can escape its usual position in the semiconductor atom to become part of the current in an electrical circuit.
Most PV cells fall into one of two basic categories: Crystalline silicon modules can be fashioned from either monocrystalline, multicrystalline, or ribbon silicon. Thin-film is a term encompassing a range of different technologies, including amorphous silicon, and a host of variations using other semiconductors like cadmium telluride or CIGS copper indium gallium diselenide.
To use the energy from the array, you may also need other components, such as inverters, charge controllers and batteries, which make up a solar-electric system. The components required are dependent on the system type designed. These are the simplest of solar-electric systems, with the fewest components basically the PV array and the load.
This means that they are only appropriate for a few select applications, notably water pumping and ventilation—when the sun shines, the fan or pump runs.
Capital structure can be a mixture of a firm's long-term debt, short-term debt, common equity and preferred equity. A company's proportion of short- and long-term debt is considered when analyzing. By Allan K from Centerville, Ohio on 11/2/ The product went together over three weekends. The first weekend two of us assembled everything up to the rafters (neiher of us work in construction - an IT consultant and an insurance salesman). The rather passé decorum of formal seating is swept away by Groundpiece, in favor of a more comfortable, relaxed sitting position. Groundpiece is the success story of a clean break with clichés.
Although they are most common in remote locations without utility service, off-grid solar-electric systems can work anywhere.
These systems require a battery bank to store the solar electricity for use during nighttime or cloudy weather, a charge controller to protect the battery bank from overcharge, an inverter to convert the DC PV array power to AC for use with AC household appliances, and all the required disconnects, monitoring, and associated electrical safety gear.
This type is very similar to an off-grid system in design and components, but adds the utility grid, which reduces the need for the system to provide all the energy all the time. These most common PV systems are also known as on-grid, grid-tied, utility-interactive, grid-intertied, or grid-direct.
System components are simply comprised of the PV array, inverter sand required electrical safety gear i. Living with a grid-connected solar-electric system is no different than living with utility electricity, except that some or all of the electricity you use comes from the sun.
The drawback of these batteryless systems is that they provide no outage protection—when the utility grid fails, these systems cannot operate.This session gives you a sneak peek at some of the top-scoring posters across a variety of topics through rapid-fire presentations.
The featured abstracts were chosen by the Program Committee and are marked by a microphone in the online program. CDC is one of the major operating components of the Department of Health and Human Services.
View CDC’s Official Mission Statements/Organizational Charts to learn more about CDC′s organizational structure. CDC's Mission CDC works 24/7 to protect America from health, safety and security threats.
Information on the structure of the Commission. When submenu is announced, use the down-arrow key to access the menu and right-arrow key to access each menu item; to navigate backwards, use the left-arrow key and the up-arrow key.
The Journal of Algebra is a leading international journal and publishes papers that demonstrate high quality research results in algebra and related computational aspects.
Only the very best and most interesting papers are to be considered for publication in the journal. With this in mind, it is important that the contribution offer a substantial result that will have a lasting effect upon the.
Explain why we need both macrosociology and microsociology to understand social life. Unit Explain what social structure is and why it is important. Explain how social structure influences the lives of street people, your instructor, and yourself.
Unit Explain how the . The word bacteria is the plural of the New Latin bacterium, which is the latinisation of the Greek βακτήριον (bakterion), the diminutive of βακτηρία (bakteria), meaning "staff, cane", because the first ones to be discovered were rod-shaped.. Origin and early evolution.