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Strains causing the frequent annual or biennial epidemics generally result from mutation antigenic drift , but pandemic influenza viruses do not generally arise by this process. Instead, gene segments from two influenza strains reassort to produce a new virus that can infect humans 16. Evidence amassed by Webster, Scholtissek, and others, indicates that waterfowl, such as ducks, are major reservoirs of influenza and that pigs can serve as mixing vessels for new mammalian influenza strains 16. Pandemic influenza viruses have generally come from China. Scholtissek and Naylor suggested that integrated pig duck agriculture, an extremely efficient food production system traditionally practiced in certain parts of China for several centuries, puts these two species in contact and provides a natural laboratory for making new influenza recombinants 17. Webster has suggested that, with high intensity agriculture and movement of livestock across borders, suitable conditions may now also be found in Europe 16. Water is also frequently associated with disease emergence. Infections transmitted by mosquitoes or other arthropods, which include some of the most serious and widespread diseases 18,19, are often stimulated by expansion of standing water, simply because many of the mosquito vectors breed in water. There are many cases of diseases transmitted by water breeding vectors, most involving dams, water for irrigation, or stored drinking water in cities. See Changes in Human Demographics and Behavior for a discussion of dengue. The incidence of Japanese encephalitis, another mosquito borne disease that accounts for almost 30,000 human cases and approximately 7,000 deaths annually in Asia, is closely associated with flooding of fields for rice growing.

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It is mandatory to procure user consent prior to running these cookies on your website. Stay connected with Pupil Transportation Safety Institute. Sign up to receive monthly email updates highlighting the latest news, links to course registration, new products, and more. Due to limited class size, payment for the SBDI and CE Courses must be received three weeks prior to the course start date or your registration will be cancelled. Cancellation three or more weeks prior to class start date will receive a full refund. Cancellation less than three weeks prior to class start date will receive a credit toward a future course and must be used in the current school year or be forfeited.

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1965, c. 365; 1971, c. 1244, s. 3; 1989, c. 526, s. 3; 2006 66, s. 9. 11d. The Board of Governors of TheUniversity of North Carolina is authorized to provide eligible employees ofconstituent institutions a program of dependent care assistance as availableunder Section 129 and related sections of the Internal Revenue Code of 1986, asamended. The Board of Governors may authorize constituent institutions to enterinto annual agreements with employees who elect to participate in the programto provide for a reduction in salary. With the approval of the Director of theBudget, savings in the employer's share of contributions under the FederalInsurance Contributions Act on account of the reduction in salary may be usedto pay some or all of the administrative expenses of the program.

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Phone 419 874 7968. Minimizes liquid slugging and maximizes vapor recovery. eq e. Jul 01 2016 On this page you can read or download refrigerant recovery log sheet pdf in PDF format. Jul 08 2017 Refrigerant Recovery Log Sheet Refrigerant Log Paperback July 8 2017 by Journals For All Author ISBN 13 978 1521787137 ISBN 10 1521787131 A log of refrigerant usage in all appliances is maintained. ensure the recovery equipment is clean and free of contaminants. You have remain in right site to start getting this info. The hose should be as short as possible to reduce pressure drop refrigerant emissions and recovery time. Providing the most comprehensive refrigerant program for nbsp Recovery of Refrigerant during Maintenance or Decommissioning . compressor A gas compressor is a nbsp 29 Jun 2005 5 ARI Directory of Certified Refrigerant Recovery Recycling Equipment A log of refrigerant usage in all appliances is maintained. note first entry must record any base charge or pre charge plus any field Refrigerant Recovery Machines Refrigerant Recovery Machines.

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Another approach, as indicated by the patent to Knopf 3,787,808, provides lights which indicate when the driver of the vehicle has taken his foot off the accelerator, and other lights indicate when the driver of the vehicle has pressed the brake pedal. In addition he has illuminated legends under the lights so that operators of approaching motor vehicles in the rear can read English, they can determine the intention of the driver. Another approach as indicated by the patent to Doerr, 4,470,036, utilizes separate lights mounted on the rear window which indicate when the driver of the vehicles has taken his foot off the accelerator pedal, and when the accelerator pedal is being pressed. When the gas pedal is being pressed, a green light comes on, and when the brake pedal is being pressed a red light comes on. The sequence of lights is controlled by means of an accelerometer. The patent to Camp 4,280,116 discloses another approach to a signaling system for vehicles. This complex system also utilizes a sequential signaling device wherein the position of a sequential type switch mounted in a barrel, is controlled by the gas pedal or the rocker arm of the carburetor. The patent to Ostrowski 4,224,598, discloses a reaction signal device for automobiles which operates so that when the drivers foot is taken off the accelerator pedal, amber lights go on. When brakes are applied the amber lights go off and the red brake lights go on. When the driver releases the brake pedal the red or brake lights go off and the amber lights go on, until the accelerator pedal is again pressed and then the amber lights go off to repeat the cycle. Still another approach to automobile signaling devices is shown in the patent to Petrella 2,750,578 wherein it appears that when the accelerator pedal is pressed, the red lights go on to warn vehicles in the rear that the vehicle is stopping.

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