Variability of Temperature and Salinity in the Middle Atlantic Bight and Gulf of Maine

Monitoring of the waters of the Middle Atlantic Bight and Gulf of Maine has been conducted by the MARMAP Ships of Opportunity Program since the early 1970's. Presented in this atlas are portrayals of the temporal and spatial patterns of surface and bottom temperature and surface salinity for these areas during the period 1978-1990. These patterns are shown in the form of time-space diagrams for single-year and multiyear (base period) time frames. Each base period figure shows thirteen-year (1978-1990) mean conditions, sample variance in the form of standard deviations of the measured values, and data locations. Each single-year figure displays annual conditions, sampling locations, and departures of annual conditions from the thirteen-year means, expressed as algebraic anomalies and standardized anomalies. (PDF file contains 112 pages.

Solar-Cell Design Based On A Distributed Diode Analysis

The front surface of a p-n junction solar cell has resistive losses associated with the diffused layer, the metal-semiconductor contact, and the grid structure. These losses are analyzed by considering the spatially distributed nature of the p-n junction and the grid conductors. This distributed diode analysis is especially useful for solar cells operated under concentrated sunlight conditions. The results show the dependence of the V-I characteristics and the maximum power output per unit cell on the ratio of the diffused layer resistance to the junction dynamic resistance. This ratio can assist the designer in establishing proper grid structure geometries and should typically be less than 0.1 if the power output per unit cell is to be within 3 percent of that for the lossless case. Experimental measurements are reported which confirm the theoretical calculations. An analysis of the grid conductor losses associated with multiple-connected unit cells shows the disastrous effect that the grid header resistance can have on the performance of a solar cell. The results indicate that the use of a tapered header conductor to decrease the metal coverage may actually worsen cell performance. Copyright © 1978 by The Institute of Electrical and Electronics Engineers, Inc

Live confocal imaging of Arabidopsis flower buds

Recent advances in confocal microscopy, coupled with the development of numerous fluorescent reporters, provide us with a powerful tool to study the development of plants. Live confocal imaging has been used extensively to further our understanding of the mechanisms underlying the formation of roots, shoots and leaves. However, it has not been widely applied to flowers, partly because of specific challenges associated with the imaging of flower buds. Here, we describe how to prepare and grow shoot apices of Arabidopsis in vitro, to perform both single-point and time-lapse imaging of live, developing flower buds with either an upright or an inverted confocal microscope

Bobwhite Whistling Activity and Population Density on Two Public Hunting Areas in Illinois

Eight years of data from 2 public hunting areas in southern Illinois demonstrate high multiple correlations (r = 0.97 and 0.84) for prebreeding densities and call indices with the prehunt densities of bobwhites (Colinus virginianus). Models derived from multiple correlation analyses produced satisfactory predictions of prehunt densities. The average number of calls per stop was the key element in the predicting model. The number of whistling cocks heard per stop is of limited value as an index because of difficulty in determining numbers when more than 7 whistling cocks are within hearing. The mod~ls for the 2 areas appear different, but this possible difference cannot be satisfactorily confirmed on the basis of data for only 8 years

Probing the microbiome to predict response to biologic therapy in Inflammatory Bowel Disease: one step closer to precision medicine?

© 2022 by the AGA InstituteCurrent treatment algorithms in inflammatory bowel disease (IBD) rely on a “trial and error” approach, and therefore, patients may receive ineffective and costly therapy for many months, with associated risks. Furthermore, after failure of the first biologic, response rates to second-line therapies drop considerably. Personalized medicine, which seeks to identify biomarkers that predict disease course and treatment efficacy, thus remains a significant unmet need in IBD.info:eu-repo/semantics/publishedVersio

The Future of Affirmative Action: The Legal Imperative Nationally and the Ohio Experience

This presentation of the legal future of affirmative action will be divided into five sections. The introductory material serves as a general introduction to the issues. The second section will review the origins and evolution of affirmative action. This section will also attempt to provide a definition of this complex concept. The third will provide a detailed analysis of Regents of the University of California v. Bakke. Bakke represents the Supreme Court\u27s first attempt to resolve the legal complexities of affirmative action. The Court\u27s holdings in Bakke have shaped the debate for over 20 years. The fourth segment of this chapter will review current affirmative action case law. Close attention will be paid to emerging legal distinctions essential to an accurate application of affirmative action principles in the future. Within this section, close attention will be paid to current controversies such as California Proposition 209 (the state constitutional amendment which outlaws the use of affirmative action), Hopwood v. State of Texas (nonminority students who challenged a law school\u27s affirmative action admissions program), and Taxman v. Board of Education of the Township of Piscataway (a teacher\u27s challenge to a school board\u27s affirmative action plan of retaining minority teachers over nonminority teachers in regard to layoff decisions). The last section will explain the Ohio Experience with affirmative action

Helianthus maximiliani and Species Fine-Scale Spatial Pattern Affect Diversity Interactions in Reconstructed Tallgrass Prairies

1. Biodiversity and Ecosystem Function analyses aim to explain how individual spe‐ cies and their interactions affect ecosystem function. With this study, we asked in what ways do species interact, are these interactions affected by species planting pattern, and are initial (planted) proportions or previous year (realized) propor‐ tions a better reference point for characterizing grassland diversity effects? 2. We addressed these questions with experimental communities compiled from a pool of 16 tallgrass prairie species. We planted all species in monocultures and mixtures that varied in their species richness, evenness, and spatial pattern. We recorded species‐specific biomass production over three growing seasons and fit‐ ted Diversity‐Interactions (DI) models to annual plot biomass yields. 3. In the establishment season, all species interacted equally to form the diversity effect. In years 2 and 3, each species contributed a unique additive coefficient to its interaction with every other species to form the diversity effect. These inter‐ actions were affected by Helianthus maximiliani and the species planting pattern. Models based on species planted proportions better‐fit annual plot yield than models based on species previous contributions to plot biomass. 4. Outcomes suggest that efforts to plant tallgrass prairies to maximize diversity ef‐ fects should focus on the specific species present and in what arrangement they are planted. Furthermore, for particularly diverse grasslands, the effort of collect‐ ing annual species biomass data may not be necessary when quantifying diversity effects with DI models

Deposition of CdTe by spray pyrolysis

We report the spray pyrolysis of thin films of CdTe which show promise as a base material for solar cell applications. The films predominately show a zinc blende structure and appear to be intrinsic. Microprobe analysis indicates an excess of cadmium but this is not detectable by X-ray diffraction or from electrical conduction measurements. Measurements indicate a nominal direct bandgap of 1.47 eV and an absorption coefficient of the order of 104 cm−1. The room temperature electrical resistivity is of the order of 107 Ω cm

Preliminary analysis of LDEF instrument A0187-1: Chemistry of Micrometeoroids Experiment

The Chemistry of Micrometeoroids Experiment (CME) exposed approximately 0.8 sq. m of gold on the Long Duration Exposure Facility's (LDEF's) trailing edge (location A03) and approximately 1.1 sq. m of aluminum in the forward-facing A11 location. The most significant results to date relate to the discovery of unmelted pyroxene and olivine fragments associated with natural cosmic dust impacts. The latter are sufficiently large for detailed phase studies, and they serve to demonstrate that recovery of unmelted dust fragments is a realistic prospect for further dust experiments that will employ more advanced collector media. We also discovered that man-made debris impacts occur on the LDEF's trailing edge with substantially higher frequency than expected, suggesting that orbital debris in highly elliptical orbits may have been somewhat underestimated