The anteroventral periventricular (AVPV) nucleus of the hypothalamus integrates estradiol (E2) and progesterone (P4) feedback signals from the ovaries to stimulate gonadotropin releasing hormone (GnRH) neurons and trigger an ovulatory surge in luteinizing hormone (LH). E2 maintains the daily cyclic LH surge and P4 quickly amplifies the surge and limits it to one day. P4 amplification of the sur...

We provide evidence that increased political influence, arising from CIA interventions during the Cold War, was used to create a larger foreign market for American products. Following CIA interventions, imports from the US increased dramatically, while total exports to the US were unaffected. The surge in imports was concentrated in industries in which the US had a comparative disadvantage, not...

Ultraviolet-filters found in various manufactured cosmetic products have been detected recently as environmental contaminants at trace concentrations. The effects of these low levels of sunscreen products on cyanobacteria were investigated in this study. Average trends of triplicate conditions in this study suggest that sunscreen causes decreased scytonemin and chlorophyll a production, as well...

Cet article traite de l’institutionnalisation du champ la Law and Economics aux Etats-Unis l’après-guerre années Reagan. Il met l’accent sur le rôle fondations d’entreprises pro-marché dans l’essor et s’appuie l’analyse trajectoires individuelles ou collectives, qu’il s’agisse projets recherche, programmes formation des juges encore travaux académiques carrières judiciaires administratives théo...

chb. „Der Einsatz hat sich gelohnt“, bilanzierte Prof. Dr. Jürgen Janek am Ende seiner Amtszeit als Zweiter JLU-Vizepräsident. Am 29. November vollzog sich der Stabswechsel an Nachfolger Prof. Dr. Karl-Heinz Kogel im Rahmen einer kleinen Feier im Rektorenzimmer vor der Senatssitzung. Dass der Chemiker Janek in seinem Verantwortungsbereich Forschung, wissenschaftlicher Nachwuchs und Internationa...

Although alkaline Hunter's Hot Springs in southeastern Oregon has been studied extensively for over 40 years, most of these studies and the subsequent publications were before the advent of molecular methods. However, there are many field observations and laboratory experiments that reveal the major aspects of the phototrophic species composition within various physical and chemical gradients o...

Constitutive phycocyanin from cyanobacterium Fremyella diplosiphon (Calothrix sp. PCC 7601) grown in green light, has been isolated and crystallized. The crystals belong to the space group R3 with cell constants a = b = 180.26 A, c = 61.24 A, alpha = beta = 90 degrees, gamma = 120 degrees. The crystal structure has been determined by Patterson search techniques using the molecular model of C-ph...