Some effects of Hurricane Agnes on water quality in the Patuxent River Estuary

A post-Agnes study that emphasized environmental factors was carried out on the Patuxent River estuary with weekly sampling at eight stations from 28 June t o 30 August 1972. Spatial and temporal changes in the distribution of many factors , e.g., salinity , dissolved oxygen, seston, particulate carbon and nitrogen, inorganic and organic fractions of dissolved nitrogen and phosphorus, and chlorophyll a were studied and compared t o extensive earlier records. Patterns shown by the present data were compared especially with a local heavy storm that occurred in the Patuxent drainage basin during July 1969. Estimates were made of the amounts of material contributed via upland drainage. A first approximation indicated that 14.8 x l0 (3) metric tons of seston were contributed t o the head of the estuary between 21 and 24 June. (PDF contains 46 pages

Some effects of tropical storm Agnes on water quality in the Patuxent River estuary

A post Agnes study emphasizing environmental factors...weekly sampling at eight stations from 28 June to August 30, 1972. Spatial and temporal changes in the distribution of many factors, e.g., salinity, dissolved oxygen (DO), seston, particulate carbon and nitrogen, inorganic and organic fractions of dissolved nitrogen and phosphorus, and chlorophyll a were studied and compared to earlier extensive records. Patterns shown by the present data were compared especially with a local heavy storm that occurred in the Patuxent drainage basin during July 1963. Some interesting correlations were observed in the data. (PDF has 39 pages.

The Impacts of Alternative Electric Rate Structures for Irrigation: Clay-Union and Union RECs

In this research report, the impacts of alternative electric rates and rate structures for irrigation for the Clay-Union rural electric cooperatives (RECs) are evaluated. Consideration is given to both different levels and different forms of electric rate changes

Telangiopsis Gen. Nov., an Upper Mississippian Pollen Organ from Arkansas

This is the publisher's version, also available electronically from www.jstor.org.Telangiopsis arkansanum is described from compressed synangiate pollen organs borne terminally on a monopodially branched system of slender axes. The specimens occur in a fine-grained shale unit of the Wedington sandstone (Chester series). Individual synangia contain five or six sporangia, measure approximately 1.0 mm long and 0.8 mm wide, and contain radial trilete spores ranging from 47 to 54 n in diameter. A discussion of the genus Telangium, to which similar remains would have previously been assigned, is presented. The generic name Telangium is retained for the petrified species T. scotti and T. pygmaeum, while the generic name Telangiopsis is proposed to include nonpetrifaction specimens previously assigned to the genus

Mixed Integer Linear programming Model Electric Rate Structure-Irrigation Study: Clay-Union, Union, Cherry-Todd, and Cam-Wal RECs

This is the second in a series of five Economics Department reports on a research project. The Economic Impact of Alternative Electric Rate Structures on Energy and Water Use . sponsored by the South Dakota Agricultural Experiment Station. Supplemental funding for the research was provided by the Western Area Power Administration (WAPA). Golden. Colorado. The purpose of this report is to acquaint the reader with the overall model used in the study and the specific way that the electric rate structures were modeled. This model builds on. b~t goes beyond. the one developed and used by Robert A. Young and. associates in their study of electric rate structures for irrigation in Colorado. The primary way in which this model extends beyond Young\u27s model is that it permits simultaneous (rather than one-at-a-time) attention to all three basic features of electric rate structures for irrigation, namely. annual minimum charges. monthly demand charges. and block rate energy charges. The primary intended audiences for the report are graduate students and research-peers with an interest in analyzing electric rate structures for irrigation

Enterprise Budgets and Other Basic Data-Sets Electrical Rate Structure-Irrigation Study

This is the first in a series of five Economics Department reports on a research project. The Economic Impact of Alternative Electric Rate Structures on Ener~y and Water Use . sponsored by the South Dakota Agricultural Experiment Station. Supplemental funding for the research was provided by the Western Area Power Administration (WAPA). Golden. Colorado. The purpose of this report is to present the irrigated and dryland crop and livestock budgets and other basic-data sets developed for use in the study. The sources of underlying information and procedures for developing the various data sets are indicated. Emphasis is placed on describing what the data-sets are and how they were developed. Only occasionally is the underlying rationale for adopted procedures indicated

The Effectiveness of a Personal Computer Aviation Training Device (PCATD), a Flight Training Device (FTD), and an Airplane in Conducting Instrument Proficiency Checks

This project evaluated the effectiveness of a personal computer aviation training device (PCATD), a flight training device (FTD) and an airplane for conducting an instrument proficiency check (IPC). The study compared the performance of pilots receiving an IPC in a PCATD, in a FTD and in an airplane (IPC #1) with performance on a later IPC in an airplane (IPC #2). Chi-square tests were used to analyze the IPC #1 and IPC #2 data to determine whether the treatment (assignment to group) had an effect on the pass/fail ratio for the IPC #1 and IPC #2 flights respectively. The treatment effect on the IPC #1 and IPC #2 pass/fail ratios were not statistically significant. A series of planned-comparison tests were performed both between the experimental groups and between subjects within each experimental group. The PCATD group was compared to the Airplane group and to the FTD group, the Airplane group to the FTD group. None of these comparisons showed statistically significant (a \u3c .05) differences between groups. These findings provide compelling evidence for permitting the use of PCATDs to give IPCs