Arsenic in Poultry Litter: Organic Regulations

Most of the arsenic used as an antibiotic in commercial broiler production ends up in the litter. Using this litter as a soil amendment is not prohibited by the National Organic Program, but 7CFR S205.203(c) of the Rule requires that "the producer must manage plant and animal materials to maintain or improve soil organic matter content in a manner that does not contribute to contamination of crops, soil, or water by plant nutrients, pathogenic organisms, heavy metals, or residues of prohibited substances." Poultry litter applied at agronomic levels, using good soil conservation practices, generally will not raise arsenic concentrations sufficiently over background levels to pose environmental or human heath risks. However, recent studies show that more than 70% of the arsenic in uncovered piles of poultry litter can be dissolved by rainfall and potentially leach into lakes or streams. Thus, organic producers must take care when they handle and apply poultry litter

A Conversation with Professor Tadeusz Cali\'{n}ski

Tadeusz Cali\'{n}ski was born in Pozna\'{n}, Poland in 1928. Despite the absence of formal secondary eduction for Poles during the Second World War, he entered the University of Pozna\'{n} in 1948, initially studying agronomy and in later years mathematics. From 1953 to 1988 he taught statistics, biometry and experimental design at the Agricultural University of Pozna\'{n}. During this period he founded and developed the Pozna\'{n} inter-university school of mathematical statistics and biometry, which has become one of the most important schools of this type in Poland and beyond. He has supervised 24 Ph.D. students, many of whom are currently professors at a variety of universities. He is now Professor Emeritus. Among many awards, in 1995 Professor Cali\'{n}ski received the Order of Polonia Restituta for his outstanding achievements in the fields of Education and Science. In 2012 the Polish Statistical Society awarded him The Jerzy Sp{\l}awa-Neyman Medal for his contribution to the development of research in statistics in Poland. Professor Cali\'{n}ski in addition has Doctoral Degrees honoris causa from the Agricultural University of Pozna\'{n} and the Warsaw University of Life Sciences. His research interests include mathematical statistics and biometry, with applications to agriculture, natural sciences, biology and genetics. He has published over 140 articles in scientific journals as well as, with Sanpei Kageyama, two important books on the randomization approach to the design and analysis of experiments. He has been extremely active and successful in initiating and contributing to fruitful international research cooperation between Polish statisticians and biometricians and their colleagues in various countries, particularly in the Netherlands, France, Italy, Great Britain, Germany, Japan and Portugal. The conversations in addition cover the history of biometry and experimental design in Poland and the early influence of British statisticians.Comment: Published at http://dx.doi.org/10.1214/15-STS522 in the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org

Comparative Advantage in Disaster Response

This paper introduces a framework for a systematic analysis of the comparative advantages of various types of emergency responders. Our hypothesis is that one can define and then test comparative advantages across categories of actors and that a policy-making framework can help prepare better disaster responses in the future. We present an analytic framework that categorizes NGOs, governments, militaries and private responders at various levels. This initial theoretical framework provides a structure to begin to analyze comparative advantage. It suggests that there might be better combinations and sequences of responders in given situations. With the basic theory set forth, the framework is tested against data from two cases: 1) the disaster response following the 2004 Tsunami in Sri Lanka and 2) the response in Honduras after Hurricane Mitch in 1998. Ultimately, this work is intended to inspire other researchers interested in questions of disaster response to employ this methodology to develop and publish cases as well, creating a body of analysis that could then be further refined into policy recommendations to improve humanitarian emergency efforts.This publication is Hauser Center Working Paper No. 38. The Hauser Center Working Paper Series was launched during the summer of 2000. The Series enables the Hauser Center to share with a broad audience important works-in-progress written by Hauser Center scholars and researchers

Would You Recognize Lupus?

Systemic Lupus Erythematosus, or SLE, is a chronic autoimmune disease which significantly affects various organs of the body and the oral cavity. According to various studies, SLE can cause an increased risk of periodontitis, fungal infections, and dental caries within the oral cavity. Periodontitis is an inflammatory condition mediated by an infectious etiology which affects the supporting tissues of the periodontium and alveolar bone. With SLE being an inflammatory condition as well, recent studies have emerged hypothesizing the possible association between SLE and periodontitis. Other effects on the oral cavity such as fungal infections including lichen planus and angular cheilitis are occasionally seen in patients with lupus. Furthermore, SLE has been shown to increase the prevalence of dental caries due to decreased salivary flow and pH, and subsequent changes in the oral flora. On a systemic level, internal inflammation of SLE could lead to several other problems within the body and certain medications patients take for SLE treatment can cause cutaneous lesions. Therefore, as clinicians, it is imperative to adequately review patient medical histories as well as perform intraoral and extraoral examinations in order to fully understand the possible contraindications between dental treatment and SLE. The purpose of this literature review is to inform clinicians on the oral and systemic aspects of SLE and how evidence-based decision making may impact dental treatment planning in order to provide patients with the best quality of care.https://scholarscompass.vcu.edu/denh_student/1003/thumbnail.jp

Western banking

Federal Reserve District, 12th ; Banks and banking - West

Interstate banking in the West

Interstate banking ; Federal Reserve District, 12th ; Banks and banking - West

The Consequences of Being Different - Statistical Discrimination and the School-to-Work Transition

When information about the true abilities of job-seekers and applicants are hard to get, statistical discrimination by employers can be an efficient strategy in the hiring and wage setting process. But statistical discrimination can induce costs, if labor relations cannot be terminated in the short term and wages are fixed over a certain period. In this paper we use a unique longitudinal survey that follows the PISA 2000 students in their educational and work-life career. We test whether deviance in the PISA test scores from what one would have predicted based on observable characteristics, influences the probability to succeed in the transition from compulsory school into a firm-based apprenticeship and whether it can explain differences of the individual performances during training. Our results suggest that hard-to-get information plays a significant role in the transition, but not always in a symmetric manner.statistical discrimination, school-to-work transition, PISA