We present direct measurements of the parity-violation parameters Ab, Ac, and As at the Z resonance with the SLD detector. The measurements are based on approximately 530k hadronic Z events collected in 1993-98. Obtained results are Ab = 0:914 0:024 (SLD combined: preliminary),Ac = 0:635 0:027 (SLD combined: preliminary), and As = 0:895 0:066(stat:) 0:062(sys:). Presented at the XXXth Internati...

We report a stability below 7 × 10(-17) of two independent optical lattice clocks operating with bosonic (88)Sr isotope. The value (429 228 066 418 008.3(1.9)(syst) (0.9)(stat) Hz) of the absolute frequency of the (1)S(0) - (3)P(0) transition was measured with an optical frequency comb referenced to the local representation of the UTC by the 330 km-long stabilized fibre optical link. The result...

F A B R I C E M O N N A , * , † , ‡ J O Ë L L A N C E L O T , † I A N W . C R O U D A C E , § A N D R E W B . C U N D Y , | A N D J A M E S T . L E W I S § Laboratoire de Géochimie Isotopique, URA-CNRS 1763, Université de Montpellier II, Place E. Bataillon, Case courrier 066, 34095 Montpellier Cedex 05, France, Department of Geology, Southampton Oceanography Centre, Southampton, SO14 3ZH, U.K.,...

Abstract Introduction Controversy surrounding sex education for youth has led to increased clinical content in these curricula, emphasizing health implications of sexually transmitted infections and pregnancy prevention methods while failing acknowledge nuanced areas such as pleasure or masturbation. The increasingly medicalized approach high school students represents a missed opportunity prov...