Char, Charred


Book Description

In the 1970s recent college grad Char flees to the idyllic Pennsylvania-Dutch countryside to consider her future. Staying with a Mennonite great-aunt, she meets Amish bad boy Uri Stoltzfus, who agrees to serve as her guide to the Plain culture. Both Char and Uri have hard choices to make about the values they will embrace in this coming-of-age novel set against the backdrop of a turbulent decade. Feminism, racism, the Vietnam War, more permissive attitudes toward sex and drugs, and new types of music collide with a way of life unchanged for centuries. Char also meets another great-aunt whose very existence proves an affair between Char's great-grandmother and an unidentified lover. Who was he and why did he not assume responsibility for his daughter? Char hopes that finding an answer to this family mystery will help her solve her own dark secret.







Analysis of Charring Ablation with Description of Associated Computing Program


Book Description

A general method is presented for solving the problem of heat-shield response in the stagnation region of a charring type ablator. The analysis is actually for the stagnation point of an axisymmetric blunt body, but it is a valid approximate method for calculations in the stagnation region of any arbitrary blunt body. The analysis is applicable to windtunnel or flight conditions, and the heat loadings are either arbitrarily assigned or they are calculated concurrently with the heat-shield response. Surface heating (or cooling) mechanisms accounted for are those due to convection, radiation, homogeneous combustion, heterogeneous combustion, surface material removal by means other than combustion (includes erosion) , and sublimation. Physical and thermodynamic properties of the ablating material are arbitrarily assigned so that calculations can be made for various materials. A typical application of the analysis is given as an illustration. The analysis is machine programmed for numerical solutions usinga finite difference scheme, and a family of computing programs is used. These programs are described and instructions are provided for using them. The programs can be obtained from COSMIC, University of Georgia, Athens, Georgia, 30601.







Generator Gas


Book Description




Generator Gas


Book Description

A translation of the Swedish book GENGAS, which describes the conversion of the Swedish motoring fleet and stationary engines to the use of gas generated from wood or charcoal during the Second World War.




The American Cyclopaedia


Book Description







Mimbres Life and Society


Book Description

A thousand years ago, village farmers in the Mimbres Valley of what is now southwestern New Mexico created stunning black-on-white pottery. Mimbres pottery has added a fascinating dimension to southwestern archaeology, but it has also led to the partial or total destruction of most Mimbres sites. The Mimbres Foundation, in one of the few modern investigations of a Mimbres pueblo, excavated the Mattocks site, containing about 180 surface rooms in addition to pit structures. Mimbres Life and Society details the Mattocks site’s architecture and artifacts, and it includes 160 figures, showing more than 400 photographs of painted vessels from the site. Mimbres pueblos, as early examples of people using surface room blocks, are ideal for investigating questions about how and why people moved from earlier subterranean pit structures to aboveground room blocks. The authors consider the number of households living at the site before and after the transition, as well as the lack of evidence for subsistence intensification and population growth as causes of this transition. These analyses suggest that each room block on the site housed a single family as opposed to multiple families, the more common interpretation. There were not necessarily more households on the site during the Classic period than earlier. Patricia A. Gilman and Steven A. LeBlanc spent five seasons excavating at the Mattocks site and many more analyzing and writing about Mattocks site data. They note that subtle social differences among people were at play, and they emphasize that the Mattocks site may be unique among Mimbres pueblos in many aspects. Mimbres Life and Society reveals broad-ranging implications for southwestern archaeologists and anyone interested in understanding the ancient Southwest and early village societies.