45,148 research outputs found
Letter from C. H. Gensler, Havasupai Agency to Carl Hayden
No full textLetter from C. H. Gensler expressing concern on behalf of the Havasupai Tribe regarding the proposed park boundaries
Citations of the author H C Rajpoot
No full textThe list of the articles, research papers, theses, and book chapters globally citing the author H. C. Rajpoot</p
Letter from Carl Hayden to C. H. Gensler
No full textLetter from Carl Hayden to C. H. Gensler informing him of the proposed Grand Canyon National Park bill
Letter from C. H. Gensler, Havasupai Agency to Carl Hayden
No full textLetter from C. H. Gensler to Carl Hayden asking for a meeting in regards to the Havasupai pasture land in light of the national park bill
Silver-Mediated Direct sp(3) C-H Bond Functionalization
No full textDirect sp(3) C-H bond functionalization is an efficient, straightforward, and powerful method to construct new C-X (X = C, N, F, S) bonds from nonfunctionalized aliphatic motif of organic molecules, which has been used in late-stage modification of complex molecules. In this chapter, the recent developments of silver-mediated direct sp(3) C-H functionalizations are reviewed, categorized by C-C bond formation (C-H insertion), C-N bond formation (intramolecular and intermolecular amination/amidation), C-F bond formation, and C-S bond formation.SCI(E)[email protected]
Letter from Carl T. Hayden to C. H. Gensler, Havasupai Reservation
No full textLetter from Carl T. Hayden to C. H. Gensler, Havasupai Indian Reservation, regarding Hualapai and Cataract Canyons geography
Recollections of Clement C. Moore, author of "A Visit from St. Nicholas"
No full textIncludes 2 poems by Clement C Moore, including "A Visit from St. Nicholas." Part of the Nancy H. Marshall Night before Christmas collection. Swem Library copy includes and undated letter about the book by Margaret N.C. Bradley, niece of the author
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
VIBRATIONALLY EXCITED CH
No full textAuthor Institution: Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138; Division of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA 02138.Following the detection of the linear carbon chain radical CH in space, many rotational lines in the electronic ground state have been observed in a low pressure discharge at millimeter wavelengths} \underline{\textbf{197}}, 1 (1999).} and in a supersonic molecular beam at centimeter wavelengths} \underline{\textbf{122}}, 174308 (2005).}. In the course of a laboratory search for new reactive hydrocarbon molecules with 6 carbon atoms, several series of harmonically related lines with rotational constants near that of CH in the ground vibrational state were observed in the millimeter-wave band. On the basis of the close agreement in rotational constants and intensities, two of the series were assigned to and states of a low-lying excited bending vibrational level of CH. The standard Hamiltonian with five spectroscopic constants reproduces the observed rotational spectrum of the state, but several high-order distortion terms in the spin-rotation interaction are needed to reproduce the spectrum of the state of CH and CD. From the measured intensities of the rotational lines it appears that the state lies very close to ground but the state lies much higher in energy. A brief summary of the laboratory spectrum and applications to the astronomical observations will be presented
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