Droplet evaporation losses during sprinkler irrigation: an overview

A detailed understanding regarding the evaporation losses in sprinkler irrigation is important for developing as well as adopting appropriate water conservation strategies. To explain this phenomenon many theoretical and experimental studies have been conducted since the 1950‟s. Notwithstanding all these efforts, the contribution of droplet evaporation to the total evaporation losses during sprinkler irrigation is still a controversial issue in the irrigation community. There is a substantial difference among researchers regarding the magnitudes of the different components of the total evaporation in sprinkler irrigation especially droplet evaporation losses. Field studies reported that the droplet evaporation losses ranged from 2 – 45%, whereas theoretical studies indicated that it is less than 1%. This is due largely to the limitations of the traditional measurement methods. However, it is likely that these limitations can be overcome and accurate measurements obtained using the eddy covariance (ECV) technique

Investigation of Electrochemistry of High Energy Compounds in Organic Electrolytes. Bibliography on Propylene Carbonate, Gamma- Butyrolactone, and Related Subjects Supplement to Third Progress Report

Bibliography on electrochemistry of high energy compounds in organic electrolyte

Early and Late-Time Observations of SN 2008ha: Additional Constraints for the Progenitor and Explosion

We present a new maximum-light optical spectrum of the the extremely low luminosity and exceptionally low energy Type Ia supernova (SN Ia) 2008ha, obtained one week before the earliest published spectrum. Previous observations of SN 2008ha were unable to distinguish between a massive star and white dwarf origin for the SN. The new maximum-light spectrum, obtained one week before the earliest previously published spectrum, unambiguously shows features corresponding to intermediate mass elements, including silicon, sulfur, and carbon. Although strong silicon features are seen in some core-collapse SNe, sulfur features, which are a signature of carbon/oxygen burning, have always been observed to be weak in such events. It is therefore likely that SN 2008ha was the result of a thermonuclear explosion of a carbon-oxygen white dwarf. Carbon features at maximum light show that unburned material is present to significant depths in the SN ejecta, strengthening the case that SN 2008ha was a failed deflagration. We also present late-time imaging and spectroscopy that are consistent with this scenario.Comment: ApJL, accepted. 5 pages, 3 figure

Ritual Irony

Ritual Irony is a critical study of four problematic later plays of Euripides: the Iphigenia in Aulis, the Phoenissae, the Heracles, and the Bacchae.Examining Euripides' representation of sacrificial ritual against the background of late fifth-century Athens, Helene P. Foley shows that each of these plays confronts directly the difficulty of making an archaic poetic tradition relevant to a democratic society. She explores the important mediating role played by choral poetry and ritual in the plays, asserting that Euripides' sacrificial metaphors and ritual performances link an anachronistic mythic ideal with a world dominated by "chance" or an incomprehensible divinity.Foley utilizes the ideas and methodology of contemporary literary theory and symbolic anthropology, addressing issues central to the emerging dialogue between the two fields. Her conclusions have important implications for the study of Greek tragedy as a whole and for our understanding of Euripides' tragic irony, his conception of religion, and the role of his choral odes.Assuming no specialized knowledge, Ritual Irony is aimed at all readers of Euripidean tragedy. It will prove particularly valuable to students and scholars of classics, comparative literature, and symbolic anthropology.Ritual Irony is a critical study of four problematic later plays of Euripides: the Iphigenia in Aulis, the Phoenissae, the Heracles, and the Bacchae.Examining Euripides' representation of sacrificial ritual against the background of late fifth-century Athens, Helene P. Foley shows that each of these plays confronts directly the difficulty of making an archaic poetic tradition relevant to a democratic society. She explores the important mediating role played by choral poetry and ritual in the plays, asserting that Euripides' sacrificial metaphors and ritual performances link an anachronistic mythic ideal with a world dominated by "chance" or an incomprehensible divinity. Foley utilizes the ideas and methodology of contemporary literary theory and symbolic anthropology, addressing issues central to the emerging dialogue between the two fields. Her conclusions have important implications for the study of Greek tragedy as a whole and for our understanding of Euripides' tragic irony, his conception of religion, and the role of his choral odes.Assuming no specialized knowledge, Ritual Irony is aimed at all readers of Euripidean tragedy. It will prove particularly valuable to students and scholars of classics, comparative literature, and symbolic anthropology

Public Security and Individual Freedom: The Dilemma of Northern Ireland

Northern Ireland has been the scene of recurring and often horrifying violence since 1969, as terrorist groups have clashed with each other, with the British Army, and with the Royal Ulster Constabulary (R.U.C.). The situation has been a difficult one for both the people and the legal system of Northern Ireland: faced with the problem of highly dedicated terrorists, the British government has had to confront directly the tension between its duty to protect public security and its concomitant obligation to safeguard individual freedom. This Article focuses on the British government\u27s most recent legislative response to this tension, the Emergency Provisions Act (EPA), and appraises its success in accommodating the competing demands of public safety and private liberty

A Comparative Analysis of Regional Productivity Trends

Throughout recent decades, the construction industry has suffered considerably from its inability to accurately target and measure key aspects of worker output that hinder productivity most. Much research has been conducted to analyze the factors contributing to labor productivity output at the work face, however, this dissertation is primarily focused on discovering key components of the building process that seem to hinder productivity from the perspective of the general contracting team. This paper’s literature review looks to address historical data relating to productivity difficulties specific to the construction industry, laborers’ productivity dilemma at the work face, and the resulting impact which these factors have on the management team. A survey was sent to employees of a particular California general contractor in order to gauge their perceptions on workplace productivity. Qualitative survey results were then cross-analyzed to compare findings between employees working in Northern and Southern California. Results showed that Northern California employees were far more likely to report spending and exorbitant amount of time in meetings while Southern California employees spent most of their nonproductive time waiting for either information, people or resources. The conclusion of this dissertation uses findings to offer advice and other recommendations to help improve general contractor productivity