Up to 98% of all single stars will eventually become white dwarfs—stars that link the history and future evolution Galaxy, whose previous is engraved in their interiors. Those interiors can be studied using asteroseismology, utilizing stellar pulsations as seismic waves. The pulsational instability strips DA DB dwarf are pure, allowing for important generalization interior structure represents ...

Abstract Geological studies in the northern sector of Chaco foreland Basin, Bolivia, yielded new fossils coming from late Oligocene-late Miocene Petaca Formation. Few fossil mammals were known Subandean Region Bolivia. We report a partially complete mandible hegetotheriid Hegetotheriinae (Notoungulata, Typotheria) Abapo (Rio Grande River). The specimen (YPFB-LIT-PAL-005) is very close size and ...

were analysed for wet and dry weight, total lipid, total, free and esterified cholesterol, total carboxyl ester, lipid phosphorus and triglyceride. The translocated testes decreased in wet and dry weight (P<0\m=.\001) and total lipid content (P< 0\m=.\001)6 days after surgery. Lipid concentration increased (P<0\m=.\01)in translocated testes, as did concentrations of total cholesterol (P<0\m=.\0...

A retrospective case-control study was conducted to determine why some infants born full-term without obstetric intervention to hepatitis B e antigen (HBeAg)-seropositive mothers become infected by hepatitis B virus (HBV) despite having received passive-active immunoprophylaxis. Cases and controls comprised 12 hepatitis B surface antigen (HBsAg)-seropositive infants and 22 HBsAg-seronegative in...