28,520 research outputs found
Electronic Spectroscopy and Dynamics of the CH/D-Ne Van der Waals Complexes
No full text1) W. H. Basinger, U. Schnupf, and M. C. Heaven, {Electronic Spectroscopy and Dynamics Of the CHID-Ne Van der Waals Complex}. Submitted to: Faraday Discussion No. 97. Structure and Dynamics of Van der Waals Complexes. 2) G. W. Lemire, M. J. Mcquaid, A. J. Kotlar, and R. C. Sausa, J. Chem. Phys., 1993, 99, 91.Author Institution: Department of Chemistry, Emory UniversityRotationally resolved spectra for the and transitions of have been recorded. Bands of both the A-X and B-X complexes were observed in association with the monomer 0-0 transition. In addition, complex bands associated with B-X monomer 1-0 transition were also recorded. Analyses of the ro-vibronic structures show that the complex is weakly bound in both the ground (X) and excited (A,B) electronic states. Preliminary results from the analysis of the highly congested A-X bands indicate that intermolecular bond length is unchanged upon excitation. A more detailed analysis is in progress and will be addressed. Analysis of the bands in the B-X system indicate that excitation to the B state reduces the binding energy and lengthens the intermolecular bond. The rotational levels of the X state were characterized by half-integer quantum numbers. This is in contrast to the situation for where the ground state exhibits integer rotational quantum numbers. The n=2 and n=1, k=0 bands in the B-X system showed homogeneous line broading as a result of rotational predissociation of the CH-Ne complex. B-X complex band assignments, rotational constants, and predissociation lifetimes will be discussed. Calculations are currently in progress on A-X system of CH/D-Ne in order to elucidate the origins of the rich rotational contours observed. Details and progress of the calculation will be reported on
Capt. W. H. Graves
No full textEngraving of Captain W. H. Graves who was an attorney, businessman and author in Birmingham, Alabama. He wrote the book titled: Junius Finally Discovered
Precipitation of supersaturated solute in H ion irradiated Fe-Au and Fe-Au-W alloys studied by positron annihilation spectroscopy
No full textThe effect of thermal aging of homogenized Fe-Au and Fe-Au-W alloys, irradiated at room temperature with hydrogen ions, was studied for an aging treatment at 300 °C for aging times up to 100 h. The aging behavior of the Fe-based alloys is compared to the results for pure Fe. The precipitation behavior of Au-rich and W-rich precipitates and its correlation to the H+ irradiation-induced defects is investigated by variable energy positron annihilation spectroscopy (VEPAS). The formation of open-volume defects after irradiation is monitored by an increase in the S parameter, while the recovery of the vacancy-like defects and the formation of precipitates are signalled by an increase in the W parameter. Au-rich precipitation continuously develops during long-term aging, as indicated by the increase in the W parameter. The change of the W parameter in the Fe-Au-W alloy is not only due to the effect of solute W on the Au precipitates, but also because of the interface of W-rich Laves phase with matrix.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Novel Aerospace MaterialsRST/Fundamental Aspects of Materials and Energ
Lydia H. Hart Diary
No full textDiary, 1823-1830, 1875 and loose papers 1813, 1831, and undated of Lydia H. Hart of Richmond, Virginia and later Walden, Orange County, New York. The Diary was started by Lydia H. Hart, the wife of Reverend William H. Hart, who was the rector of St. John’s Church in Richmond, VA and later St. Andrews Church in Walden, New York. Diary entries include day-to-day activities and meetings with local neighbors and church patron’s. These neighbors included Elizabeth Van Lew and her parents, which Lydia Hart writes about several times. Most dated entries also include discussion of specific bible verses or Rev. Hart’s sermons. Notable entries include a description of the funeral service for Rev. John Buchanan, former rector of St. John’s Church from 1795 to 1822. Diary entries are chronological and more frequent for 1823 and become less frequent in 1823. In 1828, Lydia Hart moved to New York and eventually to Walden, New York in May 1830.At the end of the diary entries is an entry form another author, possibly by Mary. W. Hart dated 1875. Lydia Hart died in 1831 and could not have made the entry.At the back of the diary and upside down to the diary entries are transcriptions of letters and poems of Lydia Hart’s to various newspapers and and personnel correspondence. Entries include a plea for support to the city of Richmond to take care of its ‘destitute children’, letters to the editor of local newspapers, and poems for the birth of a child or death of a patron.Loose papers include a letter dated Jan 8th 1813, a bequeath request from William H. Hart for the placement of a Tombstone for Lydia Hart, a table of contents for various letters or sermons, a letter from William Hart to a friend from Richmond, and 2 loose undated papers of unknown authorship. The letter from William Hart speaks of the events of Lydia’s death, and inquiries about events taking place in Richmond
1, 2-H shift in benzylchlorocarbene: isotope effect and influence of the solvent
No full textLaser flash photolysis of 3-chloro-3-benzyldiazirine and 3-chloro-3-(phenyldideuteriomethyl)diazirine in isooctane over the 60 to -80-degrees-C temperature range gives rise to curved Arrhenius plots for both 1,2-H and 1,2-D migration in benzylchlorcarbene. The k(H)/k(D) values increase smoothly from 0.87 to 2.62 when the temperature increases from -60 to +30-degrees-C. The k(H)/k(D) value is approximately 4 for most of the temperatures studied if a solvent correction is applied. Quantum mechanical tunnelling or the influence of the solvent may be a possible explanation for these observations.PT: J; CR: BONNEAU R, 1989, J AM CHEM SOC, V111, P5973 BONNEAU R, 1992, J PHOTOCH PHOTOBIO A, V68, P97 DIX EJ, 1993, J AM CHEM SOC, V115, P10424 EVANSECK JD, 1990, J PHYS CHEM-US, V94, P5518 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 JACKSON JE, 1994, ADV CARBENE CHEM JONES M, 1980, REACTIVE INTERMEDIAT, V2 KIRMSE W, 1971, CARBENE CHEM LIU MTH, 1984, TETRAHEDRON, V40, P887 LIU MTH, 1990, J AM CHEM SOC, V112, P3915 LIU MTH, 1992, J PHOTOCH PHOTOBIO A, V63, P115 LIU MTH, 1992, J PHYS ORG CHEM, V15, P285 LIU MTH, 1994, RES CHEM INTERMEDIAT, V20, P195 MODARELLI DA, 1992, J AM CHEM SOC, V114, P7034 MOSS RA, 1992, TETRAHEDRON LETT, V33, P4287 MOSS RA, 1994, ADV CARBENE CHEM MUROV SL, 1973, HDB PHOTOCHEMISTRY NICKON A, 1993, ACCOUNTS CHEM RES, V26, P84 SALIS GA, 1968, J PHYS CHEM-US, V72, P752 SANDER W, 1994, UNPUB SCHAEFER HF, 1979, ACCOUNTS CHEM RES, V12, P288 SCHOLLER WW, 1989, HOUBEN WEYL METHODEN, P41 SHIMANOUCHI T, 1972, TABLES MOL VIBRATION, V1 SUGIYAMA MH, 1992, J AM CHEM SOC, V114, P966 WIERLACHER S, 1993, J AM CHEM SOC, V115, P8943; NR: 25; TC: 20; J9: J PHOTOCHEM PHOTOBIOL A-CHEM; PG: 5; GA: PV021Source type: Electronic(1
To H. W. Buhrow, Director, Sales and Promotion, McGraw Hill, re: answers to the Author Market Survey questions.--Correspondence
No full textTo H. W. Buhrow, Director, Sales and Promotion, McGraw Hill, re: answers to the Author Market Survey questions
Nechako River Map-Area, British Columbia:
No full textby H. W. Tipper.Memoir (Geological Survey of Canada) ; 324
Wieloletnie zmiany uslonecznienia w Polsce
No full textIn the study the author made use of many years recorded series of sunshine duration data from 8 meteorological stations in Poland. The effect of the geographical position of Poland is such that out of approximately 8760 h of the year only 51 % (about 4500 h) fall in the daytime period, when the sun can be seen above the horizon and fonn the climatic conditions of our country. Sunshine duration, i. e. the duration of time when the sun radiation can reach the Earth surface directly, is between 921 h (Śnieżka, 1912) and 2227 h (Wrocław, 1921). Preliminary analysis indicates that changes in the annual totals have a declining tendency over many years, and at the same time the sunshine duration trend is strongly dependent on the level of atmospheric pollution.Dokonano wstępnej oceny zmienności czasowej i przestrzennej usłonecznienia w Polsce na podstawie wieloletnich ciągów pomiarowych usłonecznienia z 8 stacji meteorologicznych. Średnie sumy usłonecznienia wahają się od 1410 h (Śnieżka) do 1696 h (Kołobrzeg), a wartości ekstremalne od 921 h (Śnieżka) do 2227 h (Wrocław). Przeprowadzona analiza wykazuje, że w okresie wielu ostatnich lat utrzymuje się w Polsce malejący trend usłonecznienia
Główne przyczyny trudności w praktycznej realizacji obowiązków komornika sądowego jako płatnika podatku od towarów i usług
No full textThe subject of the paper is an analysis of problems the court enforcement officer encounters when executing the value added tax remitter duties. In the study, the author concentrates mainly on divergences in the doctrine and the most important statements concerning the discussed subject. Przedmiotem artykułu jest analiza problemów napotykanych przez komornika sądowego w wykonywaniu przez niego obowiązków płatnika podatku od towarów i usług. W pracy pokazano główne kontrowersje występujące w doktrynie i najważniejsze orzeczenia dotyczące omawianego tematu
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
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