Little SAC River Watershed: Bacterial Source Tracking Analysis

Agricultural and Food Policy, Environmental Economics and Policy,

Radiocarbon Dating of Lacustrine Strands in Arctic Alaska

Reports on 1958-64 studies of lacustrine processes and basin sequences in the Pt Barrow region. Lakes developed in the ice-rich late Pleistocene Gubik Formation are surrounded by two to four exposed and revegetated wave-cut shelves which suggest regional correlative cycles of piracy due to minor shifts in climate and eustatic level. Shelves exposed when lakes are intersected by tundra streams and drained, require 10-20 yr for revegetation in the present climate. Radiocarbon dates of samples from abandoned strands show the majority to be <3500 yr old. The postglacial transgressive-regressive lacustrine cycle is described and diagrammed. The lacustrine maximum transgression probably occured near the end of the hypsithermal (3500-4000 BP) and the onset of the post-hypsithermal cooling phase was synchronous with the initial period of draining. More systematic investigation is required however, before clear time correlation of geomorphic surfaces and events can be established.Radiodatations de plages soulevées dans l'Alaska arctique. C'est par capture et drainage que les cours d'eau de la toundra provoquent l'apparition des banquettes lacustres actuelles, à 10-12 milles (16-19,3 km) à l'intérieur de la côte arctique de l'Alaska. Près de Point Barrow, ces surfaces demandent, sous le climat actuel, de 10 à 20 ans pour se recouvrir de végétation. Les nombreux lacs-reliques de la région sont entourés par une séquence stabilisée de deux à quatre plages soulevées, ce qui suggère qu'aux époques précédentes, le phénomène de la capture régionale a pu être plus fréquent.Les trente échantillons radiodatés indiquent que la majorité des plages soulevées ont moins de 2500 ans; mais avec un nombre aussi limité de datations, ni les nivaux équivalents ni les séquences similaires ne peuvent indiquer une corrélation chronologique claire. Cependant, ces données suggèrent que l'expansion lacustre a atteint un maximum vers la fin de l'hypsithermal – environ 2500-4000 ans av.p. – et que le début de la phase de refroidissement post-hypsithermal correspond dans le temps avec le début de la période de drainage

Emotional and spiritual connotations of the vessel

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Alien Registration- Carson, Charles H. (Lincoln, Penobscot County)

https://digitalmaine.com/alien_docs/7420/thumbnail.jp

COLUMBIA MEDICAL CENTER AND THE COCAINE ADDICTED PHARMACIST (A)

Tom Zenor, a pharmacist for Columbia Medical Center, became addicted to cocaine. He checked himself into a rehabilitation center and, upon request, was placed on leave as allowed by the Family Medical Leave Act (FMLA). During his FMLA leave the company decided to terminate his employment upon the completion of his twelve week leave of absence. Columbia, in an attempt to be proactive, is considering any legal recourse Zenor might attempt. Columbia’s Human Resources manager, Carmen Estrada, is preparing evidence to defend the company against a potential Americans with Disabilities Act (ADA) lawsuit. Her primary concern is that Zenor will claim that his cocaine addiction is a qualified disability under the ADA. (Contact author for a copy of the complete report.)Personnel, Unjust Termination, At-Will Employment

Columbia Medical Center and the Cocaine-Addicted Pharmacist: Unjust Termination? (B)

Tom Zenor, a pharmacist for Columbia Medical Center, became addicted to cocaine. He checked himself into a rehabilitation center and, upon request, was placed on leave as allowed by the Family Medical Leave Act (FMLA). Upon his return, the company decided to terminate his employment. Zenor was upset at the dismissal, which he saw as unjust. Columbia Medical Center, in an attempt to be proactive, sought to consider any legal recourse Zenor might attempt. Columbia’s Human Resources manager, Carmen Estrada, attempted to construct evidence to defend the company against a potential unjust discharge case. The company operated in Texas, which was an “at-will” state. Nonetheless, Estrada had concerns which included whether Zenor could claim an exception to the Doctrine of Employment at-will, and if including a disclaimer in an employee handbook that employees are retained “at-will” provided adequate legal protection for the organization. (Contact author for a copy of the complete report.)Personnel, Addiction, ADA

Physically-based interactive schlieren flow visualization

Journal ArticleUnderstanding fluid flow is a difficult problem and of increasing importance as computational fluid dynamics produces an abundance of simulation data. Experimental flow analysis has employed techniques such as shadowgraph and schlieren imaging for centuries which allow empirical observation of inhomogeneous flows. Shadowgraphs provide an intuitive way of looking at small changes in flow dynamics through caustic effects while schlieren cutoffs introduce an intensity gradation for observing large scale directional changes in the flow. The combination of these shading effects provides an informative global analysis of overall fluid flow. Computational solutions for these methods have proven too complex until recently due to the fundamental physical interaction of light refracting through the flow field. In this paper, we introduce a novel method to simulate the refraction of light to generate synthetic shadowgraphs and schlieren images of time-varying scalar fields derived from computational fluid dynamics (CFD) data. Our method computes physically accurate schlieren and shadowgraph images at interactive rates by utilizing a combination of GPGPU programming, acceleration methods, and data-dependent probabilistic schlieren cutoffs. Results comparing this method to previous schlieren approximations are presented

The Multiple-Working Hypothesis As Applied to Alaska\u27s Oriented Lakes

The problem of the oriented lakes on Alaska\u27s Arctic Coastal Plain provides an excellent opportunity for illustrating the application of the method of multiple-working hypotheses to a geologic problem. Five hypotheses are considered and are deemed to be inconclusive; a composite of these is thought to provide an explanation of the lakes\u27 origin. The hypotheses considered are: (1) that waves, produced by an ancient prevailing wind blowing parallel to the lake elongation, eroded the basins; (2) that the present winds produce wave current systems which preferentially scour the north and south lake shores, thus producing elongation; (3) that the winds produce a preferred distribution of sediment which determines orientation of the lakes by insulating the east and west shores, thus protecting them from erosion ; (4) that orientation is developed by thaw produced by maximum insolation during the noon-hours; and (5) that the lakes are developed along north-south trending ice-wedges which formed in the north-south components of a right-angle fracture system. The process of consideration and elimination of these hypotheses leads to a composite hypothesis. This proposes that oriented ice-wedges might develop in the fracture system; that maximum insolation would be more effective in melting the north-south trending wedges than the complementary set; that the oriented depressions so oriented would in effect be perpetuated and enlarged by thaw and wind (wave) oriented sediments on the east-west shores