Nicotinic acetylcholine receptors (nAChRs), despite wide distribution, do not play a major role in direct mediation of central synaptic transmission. Instead, these receptors are primarily involved in modulating the release of neurotransmitters, including glutamate, GABA, norepinephrine, dopamine, and acetylcholine itself (Role and Berg, 1996; Wonnacott, 1997). Modulation of dopamine release wi...

We use geometric arguments to prove explicit bounds on the mean oscillation for two important rearrangements R n ...

The class of logconcave functions in Rn is a common generalization of Gaussians and of indicator functions of convex sets. Motivated by the problem of sampling from a logconcave density function, we study their geometry and introduce an analysis technique for “smoothing” them out. This leads to efficient sampling algorithms with no assumptions on the local smoothness of the density function. Af...

A word should be said as to the theoretically important question whether the reciprocal crosses differ in their results. No consistent difference is observable. Eight of the 31 F, cows (indicated by an asterisk in table 1) had Guernsey dams while 23 had Holstein dams. In their first lactation period the cows with Guernsey dams gave less milk but more butter-fat, average 6953 pounds of milk, 287...

Retrieval orientations are memory states that bias retrieval towards specific memory contents. Many neuroimaging studies have examined the influence of retrieval orientations on stimulus processing, but very little direct evidence exists regarding the ongoing maintenance of orientations themselves. Participants completed two memory tasks with different retrieval goals. ERPs were time-locked to ...

We'll reserve the terms resumptive and resumptive pronouns for the unbounded dependency pronouns that have traditionally received these names. To diverge from common usage at this point would be confusing and it is in any case useful to have terms specifically for this kind of resumption. We'll use the pre-theoretical terms copy raising pronoun and copy pronoun (even though there is no copying ...

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J (H .H)=0 .9Hz . lH, 10a-H), 5.75 (ddd, J(H,H)=17.0Hz, J ( H , H ) = 10.0 Hz. J (H,H) = 8.0Hz, 1 H, 9-H), 7.02 (AABB, analyzed as AB, Avnn = 54.0 Hr, J (H.H) = 9.0 Hz, 4 H, Ph-H), 7.54 (m. 1 H, 2-H). "C NMR (50.3 MHz, C,D,CI,, 100 "C): b =19.80* (C-6). 27.71 * (C-5). 30.65 (C-71, 35.96 (C-4a). 40.26 (C-4), 41.24 (C-8), 50.45 (OCH,), 51.57 (OCH,), 55.45 (Ph-OCH,). 58.87 (C-l'), 59.73 (C-8 a), 9...

Fresh material (aerial parts, leaves and stems) was collected when possible, collection data (place, date and collector) are outlined and an asterisk indicates a herbarium sample. Samples were identi"ed by M.El-Gibali, and voucher specimen are deposited at the Herbarium (CAIRC) of the National Research Center, or that of the Faculty of Science, Cairo University (CAI). P. atlantica Desf.: (1) No...

A Note to All Readers This is not an original electronic copy of the master's thesis, but a reproduced version of the authentic hardcopy of the thesis. I lost the original electronic copy during transit from India to USA in December 1999. I could get hold of some of the older version of the files and figures. Some of the missing figures have been scanned from the photocopy version of the hardco...