20,235 research outputs found
[Review of] Anne Wette Garland. Women Activists: Challenging the Abuse of Power
Women Activists is a long overdue book of stories written by women who have been involved in community political activities. The author, Anne Wette Garland, is to be commended for her ability to organize the stories told by fourteen women in an organized and interesting manner
[Review of] Roland E. Wolsey. The Black Press, U.S.A.
The Black Press, U.S.A. is an interesting book written about black publications in the United States from a historical perspective. The author, a white professor emeritus of Journalism at the Newhouse School of Public Communication at Syracuse University, is to be commended on his ability to organize the history of the black press in such an organized and interesting manner
[Review of] Dorothy Sterling. Black Foremothers: Three Lives
Black Foremothers is a much needed book written about the lives of three important black women: Ellen Craft, Ida B. Wells and Mary Church Terrell. The author, Dorothy Sterling, is to be commended for her ability to piece together the lives of these women and present them in such an interesting manner. In the foreword, Margaret Walker states that the author is highly qualified to write biographies of black women because of her intense study of American black people for at least twenty-five years
Ion-Molecule Reactions in Unsaturated Hydrocarbons: Allene, Propyne, Diacetylene, and Vinylacetylene
Ion-molecule reactions in allene, propyne, diacetylene, and vinylacetylene (1-buten-3-yne) have been studied at near-thermal energies by the technique of ion cyclotron resonance mass spectrometry. Rate coefficients and branching ratios are reported for the reactions of C_3H^+_n (n = 1-4) with allene and propyne and for the reactions of C_4H^+_n (n = 0-5) with diacetylene and vinylacetylene. Branching ratios are also given for the reactions of C_4H^+_n, C_5H_n, and C_6H^+_n with propyne and for reactions of C_6H^+_n with diacetylene and vinylacetylene. More than 90% of the reactive channels lead to product ions having a larger carbon skeleton than the reactant ion. Evidence for ions with the same m/e ratio having differing reactivities was obtained for C_3H^+_3, C_6H^+_7, and C_7H^+_7. Ion reaction sequences in allene and propyne were followed at higher pressures (l0^(-4) torr) to investigate secondary, tertiary, and higher order processes
[Review of] Carolyn Martindale. The White Press and Black America
The White Press and Black America chronicles the many deficiencies of press coverage of black America. Martindale, an assistant professor of journalism at Youngstown State University, has worked as a newspaper reporter and section editor and has published articles in several scholarly journals. She is to be commended for her compelling and informative book
Rich methane laminar flames doped with light unsaturated hydrocarbons. Part II: 1,3butadiene
In line with the study presented in the part I of this paper, the structure
of a laminar rich premixed methane flame doped with 1,3-butadiene has been
investigated. The flame contains 20.7% (molar) of methane, 31.4% of oxygen and
3.3% of 1,3-butadiene, corresponding to an equivalence ratio of 1.8, and a
ratio C4H6 / CH4 of 16 %. The flame has been stabilized on a burner at a
pressure of 6.7 kPa using argon as dilutant, with a gas velocity at the burner
of 36 cm/s at 333 K. The temperature ranged from 600 K close to the burner up
to 2150 K. Quantified species included usual methane C0-C2 combustion products
and 1,3-butadiene, but also propyne, allene, propene, propane, 1,2-butadiene,
butynes, vinylacetylene, diacetylene, 1,3-pentadiene, 2-methyl-1,3-butadiene
(isoprene), 1-pentene, 3-methyl-1-butene, benzene and toluene. In order to
model these new results, some improvements have been made to a mechanism
previously developed in our laboratory for the reactions of C3-C4 unsaturated
hydrocarbons. The main reaction pathways of consumption of 1,3-butadiene and of
formation of C6 aromatic species have been derived from flow rate analyses. In
this case, the C4 route to benzene formation plays an important role in
comparison to the C3 pathway
Cationic Cyclization Involving a Remote Allene Function in the Trifluoroethanolysis of Hepta-5,6-dienyl Toluene-p-sulphonate
The remote allene function participates efficiently in the trifluoroethanolysis of hepta-5,6-dienyl toluene-p-sulphonate, leading to the cyclized 2-methylenecyclohexyl cation
[Review of] Stephen R. Applewhite, ed. Hispanic Elderly in Transition: Theory, Research, Policy and Practice
The main focus of this book is aging as it relates to the Hispanic elderly. The author states that the primary goal of this book is to offer a contextual overview of Hispanic aging-ranging from complex issues to tentative answers
- …
