نتایج جستجو برای: shad
تعداد نتایج: 396 فیلتر نتایج به سال:
Release rates and potential fates of nitrogen and phosphorus from sediments in a eutrophic reservoir
1. Nutrients released from lake sediments can influence water column nutrient concentrations and planktonic productivity. We examined sediment nutrient release [soluble reactive phosphorus (SRP) and ammonia (NH4 )] at two sites in a eutrophic reservoir (Acton Lake, OH, U.S.A.) that differed in physical mixing conditions (a thermally stratified and an unstratified site). 2. Sediment nutrient rel...
—Population connectivity is a critical component in the life history dynamics of anadromous fishes and in the persistence of local populations. We used geochemical signatures in the otoliths of American shad Alosa sapidissima to determine natal origins and estimate rates of straying among river-specific populations along the U.S. Atlantic coast. Stable isotope (dC, dO and Sr:Sr) and elemental (...
Nowadays, computing environments are almost ubiquitous systems. Users own several machines and need to manage them in a non-obtrusive and transparent way. In addition, users eventually need to share their devices with other people. Traditional Single Sign-On (SSO) schemes do not handle well scenarios where users work simultaneously with more than one device because their agents do not cooperate...
Jeffrey S. Wieskopf, Jayanti Mathur, Walrati Limapichat, Michael R. Post, Mona Al-Qazzaz, Robert E. Sorge, Loren J. Martin, Dmitri V. Zaykin, Shad B. Smith, Kelen Freitas, Jean-Sebastien Austin, Feng Dai, Jie Zhang, Jaclyn Marcovitz, Alexander H. Tuttle, PeterM. Slepian, SarahClarke, RyanM.Drenan, Jeff Janes, Shakir Al Sharari, SamanthaK. Segall, Eske K. Aasvang, Weike Lai, Reinhard Bittner, Ch...
—We developed and applied a stable isotope turnover model to estimate how long age-0 American shad Alosa sapidissima reside within tidal freshwater and brackish-water habitats in the York River estuary, Virginia. The residence time was estimated by modeling the changing stable isotope ratio (either the carbon [dC] or sulfur [dS] stable isotope ratio) of an age-0 American shad as it migrates sea...
P SY CHOSTIMU LANTS, par ticu larly ampheta mine, be came avail able in Amer ica for clini cal use in 1937, and since then have been widely prescribed. More re cently, their bene fi cial ef fects have been over shad owed by the rec og ni tion of a sig nifi cant abuse po ten tial. Nev er the less, the mili tary serv ices, par ticu larly the Air Force, have rec og nized the value of psy chostimu ...
Haematologica vol. 85(4):April 2000 3. Magrath IT, Adde M, Shad A, Witts RE, Horak ID. Results in adults with small non-cleaved cell lymphoma treated with a short duration intensive chemotherapy protocol also used in paediatric patients [abstract]. Proceedings ASCO 1994; 1252. 4. Waits TM, Greco FA, Greer JP, et al. Effective therapy for poor-prognosis non-Hodgkin’s lymphoma with 8 weeks of hig...
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