Friday Facts, February 17, 2012, Vol. 131

Bureau of Nutrition and Health Promotion part of the Iowa Department of Public Health produces of weekly newsletter about the Iowa WIC Program for the State of Iowa citizen.

Granular Base Materials for Flexible Pavements, HR-131, 1970

The coefficients of relative strength (CORS) of base courses for use in the American association state highway officials (AASHO) interim guide for the design of flexible pavements are determined here. Based on (1) volumetric strain--axial strain relationships at minimum volume, and (2) effective stress ratio-cohesion relationships at maximum effective stress ratio, CORS were determined from the results of laboratory triaxial tests on both asphalt-treated and untreated aggregate base course materials. The researchers conclude that volumetric strain-axial strain at minimum volume appear to be appropriate parameters for determining CORS.

Behavior of Granular Materials Under Triaxial Compression with Pulsating Deviator Stress, HR-131, Special Report

Behavior of granular material subjected to repeated load triaxial compression tests is characterized by a model based on rate process theory. Starting with the Arrhenius equation from chemical kinetics, the relationship of temperature, shear stress, normal stress and volume change to deformation rate is developed. The proposed model equation includes these factors as a product of exponential terms. An empirical relationship between deformation and the cube root of the number of stress applications at constant temperature and normal stress is combined with the rate equation to yield an integrated relationship of temperature, deviator stress, confining pressure and number of deviator stress applications to axial strain. The experimental program consists of 64 repeated load triaxial compression tests, 52 on untreated crushed stone and 12 on the same crushed stone material treated with 4% asphalt cement. Results were analyzed with multiple linear regression techniques and show substantial agreement with the model equations. Experimental results fit the rate equation somewhat better than the integrated equation when all variable quantities are considered. The coefficient of shear temperature gives the activation enthalpy, which is about 4.7 kilocalories/mole for untreated material and 39.4 kilocalories/mole for asphalt-treated material. This indicates the activation enthalpy is about that of the pore fluid. The proportionality coefficient of deviator stress may be used to measure flow unit volume. The volumes thus determined for untreated and asphalt-treated material are not substantially different. This may be coincidental since comparison with flow unit volumes reported by others indicates flow unit volume is related to gradation of untreated material. The flow unit volume of asphalt-treated material may relate to asphalt cement content. The proposed model equations provide a more rational basis for further studies of factors affecting deformation of granular materials under stress similar to that in pavement subjected to transient traffic loads.

Report of the Iowa Attorney General 2001-2002

The biennial Report of the Attorney General.

Welcome To Medicare Physical Exam, September 2007

Medicare will cover a one-time preventive physical exam within the first six months that you have Part B. This benefit is for all Medicare beneficiaries including those under age 65. How much does the exam cost? You pay 20% of the Medicare approved amount after you meet the yearly Part B deductible ($131 for 2007). Since this exam may be your first Medicare-covered service, you could meet your entire Part B deductible for the year. Medicare will cover the exam if performed by a physician, physician assistant, nurse practitioner, or clinical nurse specialist. What should I expect during the exam? The “Welcome to Medicare Physical” will include the following: 1. A review of your medical and social history. 2. A review of your potential risk factors for depression. 3. A review of your functional ability and level of safety. 4. Blood pressure, height, weight and vision test 5. An electrocardiogram (EKG) 6. Education and counseling on the above five items. 7. A written plan explaining screenings and other recommended preventive services. All seven elements must be documented in order for the physical to be covered by Medicare. The exam does not include clinical laboratory tests. Medicare will pay for a one-time ultrasound screening for abdominal aortic aneurysms for beneficiaries who are at risk (has a family history or a man age 65 to 75 who has smoked at least 100 cigarettes in his lifetime.) Only Medicare beneficiaries who receive a referral from the Welcome to Medicare physical exam will be covered for this benefit. There is no Part B deductible, but you or your supplemental insurance will be responsible for the coinsurance. What should I take to the exam? You should bring the following when you go to your “Welcome to Medicare” physical exam: • Medical records, including immunization records (if you are seeing a doctor for the first time) • Family health history • A list of current prescription drugs, how often you take them, and why.

Iowa Uniform Crime Report, 2003

SERIOUS CRIMES: the rate decreased 6.6 percent from 3,669 crimes per 100,000 population in 2002 to the adjusted rate of 3,427 crimes per 100,000 population in 2003. Also known as the Crime Index, serious crimes include the violent crimes of murder, forcible rape, robbery and aggravated assault and the property crimes of burglary, larceny and motor vehicle theft. VIOLENT CRIMES: decreased 5.2 percent from 2002 to 2003, violent crimes dropped from an adjusted rate of 313.8 crimes per 100,000 population reported in 2002 to 297.4 crimes per 100,000 population in 2003. PROPERTY CRIMES: decreased 6.7 percent from an adjusted rate of 3,355 crimes per 100,000 population in 2002 to 3,131 crimes reported in 2003.