Use Of PDAs Research Articles

INNOVATIVE TECHNOLOGIES FOR TMDL DATA ACQUISITION, ANALYSIS AND DISSEMINATION

INNOVATIVE TECHNOLOGIES FOR TMDL DATA ACQUISITION, ANALYSIS AND DISSEMINATIONIn recent years, several technologies have become available that are being used to increase the efficiency and accuracy of the collection and analysis of water resources data. This paper discusses the use and implementation of hand held computers (PDA), remote sensing, and Internet mapping in the TMDL process and presents several case studies demonstrating their utility. The use of PDAs for data...Author(s)Jeffrey N. RogersMarcus QuigleySourceProceedings of the Water Environment FederationSubjectSession 11 Monitoring and Listing MethodologiesDocument typeConference PaperPublisherWater Environment FederationPrint publication date Jan, 2003ISSN1938-6478SICI1938-6478(20030101)2003:4L.1148;1-DOI10.2175/193864703784828886Volume / Issue2003 / 4Content sourceTMDLS ConferenceFirst / last page(s)1148 - 1165Copyright2003Word count307

Position sensitive solid state detectors

Solid state detectors have been used for years as high quantum efficiency detectors for visible light. In this paper the use of PDA and CCD, solid state detectors, in the X-ray region will be discussed. In particular examples of data in the soft X-ray region are presented. Finally the use of phosphor coatings to enhance the sensitivity of solid state detectors is described.

An excitatory amino acid antagonist blocks cone input to sign-conserving second-order retinal neurons.

cis-2,3-Piperidinedicarboxylic acid (PDA), an excitatory amino acid antagonist, reversibly blocked cone input to OFF bipolars and horizontal cells, whereas ON bipolars were relatively unaffected. Kainic acid effects were also blocked, indicating a postsynaptic mechanism of action. The use of PDA helps to characterize one of two classes of excitatory amino acid synaptic receptors that mediate cone influence in the outer retina.