Mark A. Shafer

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This study aims to examine how future climate, temperature and precipitation specifically, are expected to change under the A2, A1B, and B1 emission scenarios over the six states that make up the Southern Climate Impacts Planning Program (SCIPP): Oklahoma, Texas, Arkansas, Louisiana, Tennessee, and Mississippi. SCIPP is a member of the National Oceanic and(More)
Understanding the characteristics of historical droughts will benefit water resource managers because it will reveal the possible impacts that future changes in climate may have on drought, and subsequently, the availability of water resources. The goal of this study was to reconstruct historical drought occurrences and assess future drought risk for the(More)
OBJECTIVE To determine the role of sociodemographic risk markers and behavioral risk factors associated with sexually transmitted diseases (STDs) in sexually experienced youth seeking care at an urban, general health maintenance organization teen clinic. DESIGN Cross-sectional. PARTICIPANTS A consecutive, racially and ethnically diverse sample of 285(More)
50 adolescent males attending a general teen clinic (aged 13-21) were evaluated for urethritis. After examination of sediment from the initial 15-20 ml of voided urine, first-catch urine (FCU), specimen urethral swabs were taken for culture of Chlamydia trachomatis and Neisseria gonorrhoeae. 21 of 23 (91%) males with greater than 10 leucocytes per(More)
Experience is what you get when you don't get what you want. The experience of Hurricane Katrina was not what anyone in New Orleans wanted, yet three years after New Orleans was struck by Hurricane Katrina, the city proved they were ready for the next big one. As the National Hurricane Center forecasts started indicating a possible category 3 or stronger(More)
1 PREFACE This document is one of series of regional climate descriptions designed to provide input that can be used in the development of the National Climate Assessment (NCA). As part of a sustained assessment approach, it is intended that these documents will be updated as new and well-vetted model results are available and as new climate scenario needs(More)
CASE Robbie was one of those kids pediatricians look forward to seeing in the office. At 11 years old, he was evaluated by his pediatrician for academic un-derachievement, inattentiveness in the classroom, hyperactivity, and disruptive behavior limited to the classroom. A comprehensive assessment demonstrated a moderate, language-dependent learning(More)