Die Technik der Glasherstellung in der Antike

Scientific analysis of glass, excavations, and written evidence in Greek and Roman literature provide reliable information on the manufacture of glass in antiquity. In the second millenium BC, when other vitreous materials had already been known for 3000 years, hollow glass was produced in Egypt. From the early sandcore technique the manifold methods of glassmaking by casting in molds, blowing in molds, and free blowing then rapidly evolved. These techniques achieved their highest perfection in the Roman period when elaborate techniques for surface decoration were developed, but not rediscovered until recently.     

What drives visitors to tourist sites to choose “green” accommodation facilities?

Environment, Development and Sustainability - Our aim is to determine the factors influencing a visitor’s decision to stay in a green accommodation facility. Visitors from six tourist sites...     

论精神分析批评及其缺陷

精神分析批评作为一种文学批评方法,可以用于解释作者的创作动机和研究文学文本。简要梳理精神分析批评的理论渊源,分析其对文学研究的影响,指出其缺陷,旨在帮助文艺批评者更好、更有效地运用于文学批评。     

Prenatal diagnosis of a de novo supernumerary marker derived from chromosome 16

Marker chromosomes are supernumerary chromosomes of unknown origin and are seldom found in prenatal diagnosis. Application of fluorescent in situ hybridization (FISH) allows the identification of the chromosomal origin of markers. Estimation of the risk of an abnormal phenotype outcome can be enabled by collecting data on phenotypes associated with markers of the same chromosomal origin. So far only very few cases of prenatal diagnosis of de novo supernumerary markers derived from chromosome 16 have been reported. Here the prenatal diagnosis of a de novo supernumerary marker chromosome 16 is described and the relevant literature discussed. Copyright © 2001 John Wiley & Sons, Ltd.     

Simulations of ELF magnetic shields

This paper describes a multistage algorithm for efficient calculation of magnetic flux contours, for optimizing the design of structural magnetic shielding. It is part II of the article presented in Pekar and Netzer (2006). The Environmentalist. The multi-stage algorithm enables albeit medium-power computer system to calculate the effect of shielding materials with a given geometry, in a reasonable timeframe without compromising precision. The outcome results are a large number of electrical utility models and the best cost-effective shielding materials and geometries for ELF magnetic flux reduction per Authority regulations and requirements. This article reviews methods and principles for calculation of an extremely low frequency (50/60 Hz) electromagnetic field originating from power utilities and power lines, for the purpose of constructing efficient magnetic shielding. The paper points out difficulties in existing methods and proposes a new algorithm for analysis and construction of magnetic shielding.     

Water Quality Model Uncertainty Analysis of a Point‐Point Source Phosphorus Trading Program1

Kardos, Josef S. and Christopher C. Obropta, 2011. Water Quality Model Uncertainty Analysis of a Point‐Point Source Phosphorus Trading Program. Journal of the American Water Resources Association (JAWRA) 47(6):1317–1337. DOI: 10.1111/j.1752‐1688.2011.00591.x Abstract: Water quality modeling is a major source of scientific uncertainty in the Total Maximum Daily Load (TMDL) process. The effects of these uncertainties extend to water quality trading programs designed to implement TMDLs. This study examines the effects of water quality model uncertainty on a nutrient trading program. The study builds on previous work to design a phosphorus trading program for the Nontidal Passaic River Basin in New Jersey that would implement the watershed TMDL for total phosphorus (TP). The study identified how water quality model uncertainty affects outcomes of potential trades of TP between wastewater treatment plants. The uncertainty analysis found no evidence to suggest that the outcome of trades between wastewater treatment plants, as compared with command and control regulation, will significantly increase uncertainty in the attainment of dissolved oxygen surface water quality standards, site‐specific chlorophyll a criteria, and reduction targets for diverted TP load at potential hot spots in the watershed. Each simulated trading scenario demonstrated parity with or improvement from the command and control approach at the TMDL critical locations, and low risk of hot spots elsewhere.