Modeling Power Generation Losses Due to Environmental and Fish Passage Attraction Flows at a Run-Of-River Hydroelectric Operation in the Northeast

Environmental mitigation represents an important, recurring cost to the hydropower industry, the largest renewable power source in the United States. Environmental flows are one such expense whereby hydro operations maintain a minimum flow in the river to mitigate impacts on aquatic and riparian ecosystems. Any hydroelectric facility may have a habitat maintenance flow requirement, but facilities with assisted aquatic organism passage structures, or fishways, may be subject to additional flow requirements associated with specific species migrations. This study assesses the economic impact of meeting environmental flow requirements in terms of losses to power generation at a representative hydroelectric facility and fish lift in the Northeast

Versoening en moontlike versoeningsimbole in die hedendaagse Suid-Afrika

Reconciliation and possible symbols of reconciliation in contemporaiy South AfricaIn this article the important issue of reconciliation is addressed, and certain dimensions of reconciliation are discussed: perspectives from Scripture, forgiveness as prerequisite; restitution as a result and the process itself. The important role of the church of Jesus Christ as initiator and facilitator of the process of reconciliation is also stressed. The article ends with a statement that the time has come for new symbols of reconciliation in South Africa and some ideas for reconciliatory gestures are proposed

Treatment of dogs with compensated myxomatous mitral valve disease with spironolactone-a pilot study

Spironolactone improves outcome in dogs with advanced myxomatous mitral valve disease (MMVD). Its efficacy in preclinical MMVD is unknown. The hypothesis was the administration of spironolactone to dogs with compensated MMVD demonstrating risk factors for poorer prognosis will decrease the rate of disease progression. The aim was to provide pilot data to evaluate preliminary effects and sample size calculation for a definitive clinical trial

Pastorale berading aan persone geaffekteer deur MIV

Pastoral counselling to people affected by HIV.HIV is a pandemic which influences each and everyone in South Africa, the country in the world with the largest number of people living with HIV. The impact of HIV on the social, economical and micro level is tremendous. The effect of HIV on individual households is immediate, and poverty, sickness, stress, death and loneliness contribute to the devastation caused by this phenomenon.The pastoral counsellor should be equipped with the necessary knowledge to guide and support the person affected by HIV. The counselee must be empowered to handle his or her specific crisis significantly. Perspectives based on Scripture suggest how the Christian believer can manage sickness, suffering and death. The Scripture guides the Christian in times of suffering and conflict to persevere in the hope that God will give deliverance. In the article, it will be shown how the pastoral counsellor must, according to Scripture and as a called shepherd, admonish, educate, support and guide the counselee to accept the ministry of reconciliation, given to her or him by God through Christ his Son. The counselee affected by HIV will have to be empowered by the necessary knowledge in order to care for and support the person affected by HIV and be able to digest and cope with his or her own pain and stress. Pastoral counsellors can make use of the proposed counselling model in order to counsel persons affected by HIV

The γ∗γ∗\gamma^*\gamma^* Total Cross Section and the BFKL Pomeron at e+e−e^{+}e^{-} Collider

We present a numerical estimate of the $\gamma^* \gamma^*$ total cross section at LEP and at the designed $e^+e^-$ Next Linear Collider (NLC), based upon the BFKL Pomeron. We find for the linear collider that the event rate is substantial provided electrons scattered under small angles can be detected, and a measurement of this cross section provides an excellent test of the BFKL Pomeron. For LEP, although the number of events is substantially smaller, an initial study of this process is feasible.Comment: 10 pages, latex, 5 figures included using epsfi

Digitale Dataverwerking Gedurende Radio-isotoopflikkergrafie

The features of an on-line image data processing system for nuclear medicine are described. The uses of the system for the processing and evaluation of images, lung function determinations and cardiac studies are mentioned

Diffractive Meson Production and the Quark-Pomeron Coupling

Diffractive meson production at HERA offers interesting possibilities to investigate diffractive processes and thus to learn something about the properties of the pomeron. The most succesful phenomenological description of the pomeron so far assumes it to couple like a $C = +1$ isoscalar photon to single quarks. This coupling leads, however, to problems for exclusive diffractive reactions. We propose a new phenomenological pomeron vertex, which leads to very good fits to the known data, but avoids the problems of the old vertex.Comment: 20 pages, latex with uuencoded postscript, revised versio

Kwantitatiewe Radio-isotoop Kardiografie met die Sintillasie-kamera

Methods for obtainiR9 various cardiac parameters, using radio-isotopes and the scintillation camera, have improved tremendously during recent· years. These investigations offer a simplified screening test for visual interpretation. By the use of numerical techniques, quantitative information can be obtained, making investigations more sensitive. Left-to-right shunts, cardiac output, left ventricular ejection fraction and other parameters can be quantitated

Aerobic Exercise Training Affects Exercise Pressor Reflex in Older Adults

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