Non-thermal emission in High Frequency Peaked blazars towards the Square Kilometer Array era

In this thesis work we will explore and discuss the properties of the gamma-ray sources included in the first Fermi-LAT catalog of sources above 10 GeV (1FHL), by considering both blazars and the non negligible fraction of still unassociated gamma-ray sources (UGS, 13%). We perform a statistical analysis of a complete sample of hard gamma-ray sources, included in the 1FHL catalog, mostly composed of HSP blazars, and we present new VLBI observations of the faintest members of the sample. The new VLBI data, complemented by an extensive search of the archives for brighter sources, are essential to gather a sample as large as possible for the assessment of the significance of the correlation between radio and very high energy (E>100 GeV) emission bands. After the characterization of the statistical properties of HSP blazars and UGS, we use a complementary approach, by focusing on an intensive multi-frequency observing VLBI and gamma-ray campaign carried out for one of the most remarkable and closest HSP blazar Markarian 421.

Comparison of Round and Square Cores in the Determination of Beef Tenderness by Warner- Bratzler and Instron

Seven rib-eye rolls, lip on (112A), were each cut into eight 2.54 centimeter thick steaks starting from the blade end. Steaks were randomly assigned to one of four treatment groups; 1) round versus square cores using Instron [inst1], 2) round versus square cores using Warner- Bratzler [inst2], 3) Instron versus Warner-Bratzler using round cores [rdsq1], and 4) Instron versus Warner- Bratzler using square cores [rdsq2]. Subsequently, steaks from each group were broiled in a General Electric industrial broiler grill to an internal temperature of 63 §C. Steaks were held overnight at 2 §C. Two steaks from each rib were placed into each instrument/core treatment group. Steaks were then divided into three sections identified as: a) lateral, b) medial, and c) central. Three 1.27 centimeter cores from each section were taken from each steak for a total of nine cores per steak and sheared once through the center. The results indicated that there was a significant difference ( p> .05) between round and square cores for both Warner- Bratzler and Instron. In all mean groups tested, square cores had higher shear values than did round cores. There was no indication of differences between instruments, and no significant interactions between instruments and core types.