102,579 research outputs found
Reaction of phenylchlorocarbene in oxygen-doped matrices
No full textPT: J; CR: ANDREWS L, 1972, J PHYS CHEM-US, V76, P3208 BAILEY PS, 1978, OZONATION ORGANIC CH, V1 CASAL HL, 1984, J AM CHEM SOC, V106, P7623 CASAL HL, 1985, J AM CHEM SOC, V107, P4616 CHAPMAN OL, COMMUNICATION CHAPMAN OL, 1979, J AM CHEM SOC, V101, P3690 CHAPMAN OL, 1984, J AM CHEM SOC, V106, P1842 COX DP, 1983, TETRAHEDRON LETT, V24, P5313 DUNKIN IR, 1983, J CHEM SOC CHEM COMM, P1213 DUNKIN IR, 1985, TETRAHEDRON, V41, P339 DUNKIN, 1986, J CHEM SOC CHEM COMM, P154 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 GRILLER D, 1982, J AM CHEM SOC, V104, P5549 GRILLER D, 1983, J ORG CHEM, V48, P1359 HARDING LB, 1978, J AM CHEM SOC, V100, P7180 HIGLEY DP, 1974, J AM CHEM SOC, V96, P3330 HOUK KN, 1984, J AM CHEM SOC, V106, P4291 HOUK KN, 1984, J AM CHEM SOC, V106, P4293 HOUK KN, 1985, TETRAHEDRON, V41, P1555 JEYARAMAN R, 1984, J AM CHEM SOC, V106, P2462 KESSELMAYER MA, 1986, J AM CHEM SOC, V108, P99 LIU MTH, UNPUB MOSS RA, 1983, TETRAHEDRON LETT, V24, P685 MURRAY RW, 1971, J AM CHEM SOC, V93, P4963 MURRAY RW, 1973, J AM CHEM SOC, V95, P3343 MURRAY RW, 1985, J ORG CHEM, V50, P2847 REGITZ M, 1978, CHEM DIAZONIUM DIA 2, P696 RULE M, 1982, J AM CHEM SOC, V104, P2209 SHERIDAN RS, 1984, J AM CHEM SOC, V106, P436 SUGAWARA T, 1983, CHEM LETT, P1261 TALBOTT RL, 1972, 3632606, US TURRO NJ, 1980, J AM CHEM SOC, V102, P7576 TURRO NJ, 1982, J AM CHEM SOC, V104, P1754 VARSANYI G, 1974, ASSIGNMENTS VIBRATIO, V1 WADT WR, 1975, J AM CHEM SOC, V97, P3004; NR: 35; TC: 99; J9: J AMER CHEM SOC; PG: 4; GA: A7574Source type: Electronic(1
Thermolysis and photolysis of 3-chloro-3-benzyldiazirines in alkenes; evidence for a carbene-alkene complex
No full textPT: J; CR: DOLBY LJ, 1966, J ORG CHEM, V31, P110 FRENKING G, 1984, TETRAHEDRON, V40, P2123 GIESE B, 1982, ANGEW CHEM INT EDIT, V21, P310 GOULD IR, 1985, TETRAHEDRON, V41, P1587 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 HOUK KN, 1984, J AM CHEM SOC, V106, P4291 HOUK KN, 1984, J AM CHEM SOC, V106, P4293 HOUK KN, 1985, TETRAHEDRON, V41, P1555 LEHR NJ, 1982, J AM CHEM SOC, V104, P1754 LIU MTH, 1985, J CHEM SOC CHEM COMM, P982 LIU MTH, 1985, TETRAHEDRON LETT, V26, P3071 LIU MTH, 1986, J CHEM SOC PERK T 2, P1233 LIU MTH, 1987, CHEM DIAZIRINES, CH5 MARCH J, 1985, ADV ORG CHEM, P244 MOSS RA, 1986, J AM CHEM SOC, V108, P7028 SCHAEFER HF, 1979, ACCOUNTS CHEM RES, V12, P288 SOUNDARARAJAN N, UNPUB TOMIOKA H, 1984, J AM CHEM SOC, V106, P454 TOMIOKA H, 1984, J CHEM SOC CHEM COMM, P476; NR: 19; TC: 28; J9: J ORG CHEM; PG: 5; GA: K1778Source type: Electronic(1
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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3346: Samuel G. Freedman, author, 2013
No full textPhotograph of author Samuel G. Freedman, at NT Daily Slash meeting in the Mayborn School of Journalism at UNT
Disorders of sex development
No full textFil: Rey, Rodolfo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones Endocrinológicas "Dr. César Bergada". Gobierno de la Ciudad de Buenos Aires. Centro de Investigaciones Endocrinológicas "Dr. César Bergada". Fundación de Endocrinología Infantil. Centro de Investigaciones Endocrinológicas "Dr. César Bergada"; ArgentinaFil: Houk, Christopher P.. No especifíca;Fil: Witchel, Selma. No especifíca;Fil: Lee, Peter A.. No especifíca
Theoretical study of a termolecular mechanism for the reaction of (trimethylsilyl)thiazole with carbonyl compounds
No full textThe mechanism of the addition of 2-silylthiazole to formaldehyde has been studied by ab initio calculations at the MP2/6-31+G*//6-31G* level. The reaction is predicted to occur by the concerted formation of an N-[(silyloxy)methyl]thiazolium-2-ylide intermediate followed by nucleophilic addition of the intermediate to another formaldehyde molecule. Loss of the first formaldehyde gives the addition product. An alternative mechanism involving 1,2-migration of the ylide to form 2-[(silyloxy)-methyl]thiazole is prevented because of the high activation energy of the 1,2-shift. A third mechanistic alternative involving the formation of an N-silylthiazolium-2-ylide through 1,2-silyl migration is also discounted due to a high activation energy
Facile formation of azines from reactions of singlet methylene and dimethylcarbene with precursor diazirines
No full textThe reactions of the singlet methylene (la) and dimethylcarbene (1b), with their diazirine precursors, diazirine (2a), and dimethyldiazirine (2b), have been studied theoretically using ab initio and density functional theory. The reaction has no activation barriers for the parent system (la + 2a) and proceeds via a reactive complex and a transition state with a small negative enthalpy of activation (Delta H-298(not equal) = -1.1 kcal mol(-1), Delta S-298(not equal) = -34.4 cal mol(-1) K-1 Delta G(298)(o) = 9.2 kcal mol(-1)) for the dimethyl derivatives (1b + 2b). The formation of N-methylene diazirinium ylides (3a,b) is exothermic by 64-80 kcal mol(-1). The isomer, 1,3-diazabicyclo[1.1.0]butane (4a), is more stable (5-12 kcal mol(-1)) than isomer 3a, but can neither be formed by direct thermal reaction of 1a with 2a nor undergo the direct rearrangement into formaldazine (5a). The rearrangement of ylides 3a,b into azines 5a,b proceeds by conrotatory C-3(-) N-1 ring opening. The predicted activation barrier of ca. 15 kcal mol(-1) for the ring opening in ylide 3b is in excellent agreement with experimental data. The formation of pyridinium ylides from carbenes and pyridine is also studied.PT: J; CR: BONNEAU R, 1992, J PHOTOCH PHOTOBIO A, V68, P97 BONNEAU R, 1998, J PHOTOCH PHOTOBIO A, V116, P9 BRINTON RK, 1955, J AM CHEM SOC, V77, P842 CURTISS LA, 1991, J CHEM PHYS, V94, P7221 DIX EJ, 1994, THESIS U ROCHESTER N DOYLE MP, 1987, CHEM DIAZIRINES, V2, P33 DOYLE MP, 1987, J ORG CHEM, V52, P1619 FREY HM, 1963, J CHEM SOC, P3514 FRISCH MJ, 1995, GAUSSIAN 94 REVISION GONZALEZ C, 1990, J PHYS CHEM-US, V94, P5523 GRAHAM WH, 1962, J AM CHEM SOC, V84, P1063 HORNE DG, 1970, P ROY SOC A, V315, P301 HOUK KN, 1984, J AM CHEM SOC, V106, P4293 JACKSON JE, 1994, ADV CARBENE CHEM, V1, P8 LIU MTH, 1987, CHEM DIAZIRINES, V1, P112 LIU MTH, 1992, J PHOTOCH PHOTOBIO A, V63, P115 LIU MTH, 1994, RES CHEM INTERMEDIAT, V20, P195 MCQUARRIE DA, 1973, STAT THERMODYNAMICS MORGAN S, 1991, J AM CHEM SOC, V113, P2782 MOSS RA, 1990, J AM CHEM SOC, V112, P5642 MOSS RA, 1994, ADV CARBENE CHEM, V1, P59 MOSS RA, 1997, J AM CHEM SOC COMM, P617 OGILVIE JF, 1968, J CHEM PHYS, V48, P2248 OGILVIE JFJ, 1965, J CHEM SOC CHEM COMM, P359 REED AE, 1988, CHEM REV, V88, P899 WEINHOLD F, 1988, STRUCTURE SMALL MOL ZVEREV VV, 1973, J GEN CHEM USSR, V43, P2005; NR: 27; TC: 8; J9: CAN J CHEM; PG: 10; GA: 219NDSource type: Electronic(1
The Right to Strike under the United States Constitution: Theory, Practice, and Possible Implications for Canada
No full textAnswering critics of the Canadian Supreme Court's judgment in B.C. Health, the author argues that the Court laid the foundation for a principled and durable doctrine protecting constitutional labour rights, one that goes directly to the heart of the matter — the inequality of workers’ power in the employment relation. In the author’s view, two paths could lead from B.C. Health to the recognition of Charter protec- tion for a right to strike: one that treats the right as an accessory to col- lective bargaining, and one that upholds the right directly on the basis of the Charter values of equality and participation. The author supports the latter approach, contending that constitutional rights should be defined in relation to fundamental values, in a way that is not contingent on time-bound or fact-sensitive assessments about the role of strikes within a particular collective bargaining regime. Although a Charter right to strike may involve the courts in difficult choices about when to defer to legislative policy decisions, and courts may lack the institutional capac- ity to deal effectively with labour law issues, the author points out that judges can look to ILO standards for expert guidance. Noting that the U.S. experience in this area might be of considerable use to Canadians, the author concludes by providing an overview of American case law concerning a constitutional right to strike.Peer reviewe
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