Ultraviolettabsorptionsmessungen des Liquors

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“…4 Generally, the etching process goes via a simple chelation process. 4 Generally, the etching process goes via a simple chelation process.…”

Section: Introductionmentioning

confidence: 99%

Surface-mediated reaction pathways of 2,4-pentanedione on clean and oxygen covered Cu (210)

Nigg

Ford

Masel

1998

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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“…Photoperiodic influences on anterior pituitary secretion of prolac-which this reduction in PRL release occur have not been thoroughly investigated. It has been proposed that photoperiod may tin ( PRL) in hamsters are well-documented (1,2,3,4,5).…”

Section: Introductionmentioning

confidence: 99%

Anterior Pituitary Release of Prolactin is Inhibited by Exposure to Short Photoperiod

Badura

Goldman

1997

J Neuroendocrinology

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The potential regulatory sites responsible for the decrease of circulating prolactin (PRL) levels shown by many photoperiodic mammals following prolonged exposure to short days was investigated in Siberian hamsters that had been maintained under a stimulatory, long-day photoperiod, and in hamsters that had been shifted to a nonstimulatory, short-day photoperiod for 8-10 weeks. The ability of anterior pituitary fragments (AP) from each of these groups to release prolactin was evaluated in pituitary tissue cultured alone and also in pituitary tissue co-cultured with hypothalamic fragments (HF), using a perifusion tissue culture system. The perfusate from these cultures was collected every 1/2 h for 8 h, and was assayed for basal levels of prolactin using radioimmunoassay. For AP tissue cultured alone, there was a robust reduction in prolactin release by the fragments harvested from short-day housed animals. In AP tissue harvested from long-day exposed animals, co-culture with either long- or short-day HF did not induce significant changes in basal PRL release. Similarly, co-culture with short-day HF did not significantly alter PRL release in short-day APs. However, there was a significant increase in release when short-day APs were co-cultured with long-day HF. These results suggest a direct effect of photoperiod on PRL synthesis and/or release at the level of the pituitary. However, the altered responsiveness of short-day pituitaries could be the result of previous, chronic inhibitory hypothalamic input during short-day exposure. A follow-up study was conducted to investigate the ability of vasoactive intestinal peptide (VIP) to stimulate PRL release from long- and short-day APs. Results indicated that the ability of VIP to stimulate PRL release is both photoperiod and dose dependent.

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“…With the appearance of flows in the global field with one or two block tridiagonal the characteristic-based upwind schemes in the 1980s, the matrix inversions at the local planes are usually CPU time two-factor scheme based on a lower-upper (LU) factoriza-intensive. A different unfactored 3D algorithm is develtion proposed by Steger and Warming [4] and Jameson oped by Paoletti et al [15] using the conjugate gradient and Turkel [3] became popular as an alternative to the squared (CGS) iterative algorithm with ADI as a precondi-ADI method to solve 3D flow fields. Even though the LU tioner.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Three-Dimensional Flows Using Unfactored Upwind-Relaxation Sweeping Algorithm

Zha

Bilgen

1996

Journal of Computational Physics

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Ultraviolettabsorptionsmessungen des Liquors

Cited by 3 publications

References 8 publications

Surface-mediated reaction pathways of 2,4-pentanedione on clean and oxygen covered Cu (210)

Surface-mediated reaction pathways of 2,4-pentanedione on clean and oxygen covered Cu (210)

Anterior Pituitary Release of Prolactin is Inhibited by Exposure to Short Photoperiod

Numerical Study of Three-Dimensional Flows Using Unfactored Upwind-Relaxation Sweeping Algorithm

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