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Accretion Power in Astrophysics
Accretion Power in Astrophysics examines accretion as a source of energy in both binary star systems containing compact objects, and in active galactic nuclei. Assuming a basic knowledge of physics, the authors describe the physical processes at work in accretion discs and other accretion flows. The first three chapters explain why accretion is a source of energy, and then present the gas dynamics and plasma concepts necessary for astrophysical applications. The next three chapters then develop accretion in stellar systems, including accretion onto compact objects. Further chapters give extensive treatment of accretion in active galactic nuclei, and describe thick accretion discs. A new chapter discusses recently discovered accretion flow solutions. The third edition is greatly expanded and thoroughly updated. New material includes a detailed treatment of disc instabilities, irradiated discs, disc warping, and general accretion flows. The treatment is suitable for advanced undergraduates, graduate students and researchers.
Livestock Genomics and Community-based Breeding Strategies in Low-and-Middle-Income Countries: Challenges, Opportunities and Future Perspectives
Low-and-Middle-Income Countries (LMICs) are home to diverse populations of livestock species adapted to various agro-ecological zones, production systems, and harsh environmental conditions. However, the livestock in LMICs have not been systematically improved and current low levels of productivity do not meet the demand for livestock products by a growing population. Recent advances in next-generation sequencing and genotyping technologies have enabled the application of genomic selection in various livestock species in some western countries with great success. Despite the low adoption of genomic breeding in LMICs livestock industry, various studies and programs were initiated and some are...
Solomon Islands
This Selected Issues paper sets out options to demonstrate how the authorities could supplement their cash balance target and public debt limit with an anchor to help discipline annual budget decisions. The paper introduces the current fiscal framework and effective fiscal rules based on international experiences, including the characteristics of each rule. It also discusses the need for a new fiscal anchor, given high revenue volatility, high infrastructure needs, and the country’s exposure and vulnerability to natural disasters. Contingency warrants for unforeseen expenditures, including from natural disasters, should be included in the budget in line with international best practices. F...
Ethiopia Health Extension Program
As a low-income country, Ethiopia has made impressive progress in improving health outcomes. This report examines how Ethiopia s Health Extension Program (HEP) has contributed to the country s move toward Univeral Health Coverage (UHC), and to shed light on how other countries may learn from Ethiopia s experiences of HEP when designing their own path to UHC. HEP is one of the government s UHC strategies introduced in a context of limited resources and low coverage of essential health services. The key aspects of the program include the capacity building and mobilization of more than 30, 000 Health Extension Workers (HEWs) targeting more than 12 million model families, and the mobilization of...
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Disease Control Priorities, Third Edition (Volume 2)
The evaluation of reproductive, maternal, newborn, and child health (RMNCH) by the Disease Control Priorities, Third Edition (DCP3) focuses on maternal conditions, childhood illness, and malnutrition. Specifically, the chapters address acute illness and undernutrition in children, principally under age 5. It also covers maternal mortality, morbidity, stillbirth, and influences to pregnancy and pre-pregnancy. Volume 3 focuses on developments since the publication of DCP2 and will also include the transition to older childhood, in particular, the overlap and commonality with the child development volume. The DCP3 evaluation of these conditions produced three key findings: 1. There is significant difficulty in measuring the burden of key conditions such as unintended pregnancy, unsafe abortion, nonsexually transmitted infections, infertility, and violence against women. 2. Investments in the continuum of care can have significant returns for improved and equitable access, health, poverty, and health systems. 3. There is a large difference in how RMNCH conditions affect different income groups; investments in RMNCH can lessen the disparity in terms of both health and financial risk.
A Dove from the Ark
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