Search Results - (Author, Cooperation:P. Arora)

Showing 1 - 16 results of 16, query time: 0.32s Refine Results
  1. 1
    G. B. Ehret ; P. B. Munroe ; K. M. Rice ; M. Bochud ; A. D. Johnson ; D. I. Chasman ; A. V. Smith ; M. D. Tobin ; G. C. Verwoert ; S. J. Hwang ; V. Pihur ; P. Vollenweider ; P. F. O'Reilly ; N. Amin ; J. L. Bragg-Gresham ; A. Teumer ; N. L. Glazer ; L. Launer ; J. H. Zhao ; Y. Aulchenko ; S. Heath ; S. Sober ; A. Parsa ; J. Luan ; P. Arora ; A. Dehghan ; F. Zhang ; G. Lucas ; A. A. Hicks ; A. U. Jackson ; J. F. Peden ; T. Tanaka ; S. H. Wild ; I. Rudan ; W. Igl ; Y. Milaneschi ; A. N. Parker ; C. Fava ; J. C. Chambers ; E. R. Fox ; M. Kumari ; M. J. Go ; P. van der Harst ; W. H. Kao ; M. Sjogren ; D. G. Vinay ; M. Alexander ; Y. Tabara ; S. Shaw-Hawkins ; P. H. Whincup ; Y. Liu ; G. Shi ; J. Kuusisto ; B. Tayo ; M. Seielstad ; X. Sim ; K. D. Nguyen ; T. Lehtimaki ; G. Matullo ; Y. Wu ; T. R. Gaunt ; N. C. Onland-Moret ; M. N. Cooper ; C. G. Platou ; E. Org ; R. Hardy ; S. Dahgam ; J. Palmen ; V. Vitart ; P. S. Braund ; T. Kuznetsova ; C. S. Uiterwaal ; A. Adeyemo ; W. Palmas ; H. Campbell ; B. Ludwig ; M. Tomaszewski ; I. Tzoulaki ; N. D. Palmer ; T. Aspelund ; M. Garcia ; Y. P. Chang ; J. R. O'Connell ; N. I. Steinle ; D. E. Grobbee ; D. E. Arking ; S. L. Kardia ; A. C. Morrison ; D. Hernandez ; S. Najjar ; W. L. McArdle ; D. Hadley ; M. J. Brown ; J. M. Connell ; A. D. Hingorani ; I. N. Day ; D. A. Lawlor ; J. P. Beilby ; R. W. Lawrence ; R. Clarke ; J. C. Hopewell ; H. Ongen ; A. W. Dreisbach ; Y. Li ; J. H. Young ; J. C. Bis ; M. Kahonen ; J. Viikari ; L. S. Adair ; N. R. Lee ; M. H. Chen ; M. Olden ; C. Pattaro ; J. A. Bolton ; A. Kottgen ; S. Bergmann ; V. Mooser ; N. Chaturvedi ; T. M. Frayling ; M. Islam ; T. H. Jafar ; J. Erdmann ; S. R. Kulkarni ; S. R. Bornstein ; J. Grassler ; L. Groop ; B. F. Voight ; J. Kettunen ; P. Howard ; A. Taylor ; S. Guarrera ; F. Ricceri ; V. Emilsson ; A. Plump ; I. Barroso ; K. T. Khaw ; A. B. Weder ; S. C. Hunt ; Y. V. Sun ; R. N. Bergman ; F. S. Collins ; L. L. Bonnycastle ; L. J. Scott ; H. M. Stringham ; L. Peltonen ; M. Perola ; E. Vartiainen ; S. M. Brand ; J. A. Staessen ; T. J. Wang ; P. R. Burton ; M. Soler Artigas ; Y. Dong ; H. Snieder ; X. Wang ; H. Zhu ; K. K. Lohman ; M. E. Rudock ; S. R. Heckbert ; N. L. Smith ; K. L. Wiggins ; A. Doumatey ; D. Shriner ; G. Veldre ; M. Viigimaa ; S. Kinra ; D. Prabhakaran ; V. Tripathy ; C. D. Langefeld ; A. Rosengren ; D. S. Thelle ; A. M. Corsi ; A. Singleton ; T. Forrester ; G. Hilton ; C. A. McKenzie ; T. Salako ; N. Iwai ; Y. Kita ; T. Ogihara ; T. Ohkubo ; T. Okamura ; H. Ueshima ; S. Umemura ; S. Eyheramendy ; T. Meitinger ; H. E. Wichmann ; Y. S. Cho ; H. L. Kim ; J. Y. Lee ; J. Scott ; J. S. Sehmi ; W. Zhang ; B. Hedblad ; P. Nilsson ; G. D. Smith ; A. Wong ; N. Narisu ; A. Stancakova ; L. J. Raffel ; J. Yao ; S. Kathiresan ; C. J. O'Donnell ; S. M. Schwartz ; M. A. Ikram ; W. T. Longstreth, Jr. ; T. H. Mosley ; S. Seshadri ; N. R. Shrine ; L. V. Wain ; M. A. Morken ; A. J. Swift ; J. Laitinen ; I. Prokopenko ; P. Zitting ; J. A. Cooper ; S. E. Humphries ; J. Danesh ; A. Rasheed ; A. Goel ; A. Hamsten ; H. Watkins ; S. J. Bakker ; W. H. van Gilst ; C. S. Janipalli ; K. R. Mani ; C. S. Yajnik ; A. Hofman ; F. U. Mattace-Raso ; B. A. Oostra ; A. Demirkan ; A. Isaacs ; F. Rivadeneira ; E. G. Lakatta ; M. Orru ; A. Scuteri ; M. Ala-Korpela ; A. J. Kangas ; L. P. Lyytikainen ; P. Soininen ; T. Tukiainen ; P. Wurtz ; R. T. Ong ; M. Dorr ; H. K. Kroemer ; U. Volker ; H. Volzke ; P. Galan ; S. Hercberg ; M. Lathrop ; D. Zelenika ; P. Deloukas ; M. Mangino ; T. D. Spector ; G. Zhai ; J. F. Meschia ; M. A. Nalls ; P. Sharma ; J. Terzic ; M. V. Kumar ; M. Denniff ; E. Zukowska-Szczechowska ; L. E. Wagenknecht ; F. G. Fowkes ; F. J. Charchar ; P. E. Schwarz ; C. Hayward ; X. Guo ; C. Rotimi ; M. L. Bots ; E. Brand ; N. J. Samani ; O. Polasek ; P. J. Talmud ; F. Nyberg ; D. Kuh ; M. Laan ; K. Hveem ; L. J. Palmer ; Y. T. van der Schouw ; J. P. Casas ; K. L. Mohlke ; P. Vineis ; O. Raitakari ; S. K. Ganesh ; T. Y. Wong ; E. S. Tai ; R. S. Cooper ; M. Laakso ; D. C. Rao ; T. B. Harris ; R. W. Morris ; A. F. Dominiczak ; M. Kivimaki ; M. G. Marmot ; T. Miki ; D. Saleheen ; G. R. Chandak ; J. Coresh ; G. Navis ; V. Salomaa ; B. G. Han ; X. Zhu ; J. S. Kooner ; O. Melander ; P. M. Ridker ; S. Bandinelli ; U. B. Gyllensten ; A. F. Wright ; J. F. Wilson ; L. Ferrucci ; M. Farrall ; J. Tuomilehto ; P. P. Pramstaller ; R. Elosua ; N. Soranzo ; E. J. Sijbrands ; D. Altshuler ; R. J. Loos ; A. R. Shuldiner ; C. Gieger ; P. Meneton ; A. G. Uitterlinden ; N. J. Wareham ; V. Gudnason ; J. I. Rotter ; R. Rettig ; M. Uda ; D. P. Strachan ; J. C. Witteman ; A. L. Hartikainen ; J. S. Beckmann ; E. Boerwinkle ; R. S. Vasan ; M. Boehnke ; M. G. Larson ; M. R. Jarvelin ; B. M. Psaty ; G. R. Abecasis ; A. Chakravarti ; P. Elliott ; C. M. van Duijn ; C. Newton-Cheh ; D. Levy ; M. J. Caulfield ; T. Johnson
    Nature Publishing Group (NPG)
    Published 2011
    Staff View
    Publication Date:
    2011-09-13
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Africa/ethnology ; Asia/ethnology ; Blood Pressure/*genetics/physiology ; Cardiovascular Diseases/*genetics ; Coronary Artery Disease/genetics ; Europe/ethnology ; Genetic Predisposition to Disease/*genetics ; Genome-Wide Association Study ; Humans ; Hypertension/genetics ; Kidney Diseases/genetics ; Polymorphism, Single Nucleotide/*genetics ; Stroke/genetics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2018-05-30
    Publisher:
    American Heart Association (AHA)
    Print ISSN:
    1942-325X
    Electronic ISSN:
    1942-3268
    Topics:
    Medicine
    Keywords:
    Statements and Guidelines
    Published by:
    http://www.americanheart.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    GULATI, S ; KHER, V ; JAIN, M ; MITTAL, S ; ARORA, P ; GUPTA, A ; GUPTA, RK

    Oxford, UK : Blackwell Publishing Ltd
    Published 1997
    Staff View
    ISSN:
    1440-1797
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    Summary: A retrospective analysis of 67 biopsy proven cases of focal segmental glomerulosclerosis (FSGS) in children was performed. After a mean duration of disease of 48.5 ± 44 months, 20 patients (30%) achieved sustained remission (SR), 23 (34%) had frequent relapses (FR) and 24 (36%) were steroid non-responders (NR). the NR group had a significantly higher mean age of onset 9.1 ± 1.01 years (P= 0.003) and had higher number of females (P= 0.0009). They also had a significantly higher prevalence of microhaematuria as compared to FR and SR groups (P= 0.002). the initial steroid response category (P〈0.00001) and the percentage of glomeruli with segmental sclerosis on histopathology (P= 0.001) correlated with the subsequent outcome. During this period six children developed progressive renal failure and all of them belonged to NR group (25%). There were four deaths and all of them were non-responders (16.6%). Features predictive of a poor therapeutic outcome in childhood FSGS are age of onset more than 9 years, female sex, microhaematuria, renal dysfunction at onset, initial non-response to steroids and percentage of glomeruli with segmental sclerosis on histopathology.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1440-1797.1997.tb00263.x

    Articles: DFG German National Licenses
  4. 4
    KHER, V ; ARORA, P ; KRISHNANI, N ; PANDEY, RK ; GUPTA, Amit

    Oxford, UK : Blackwell Publishing Ltd
    Published 1996
    Staff View
    ISSN:
    1440-1797
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    Summary: Twenty-three patients with lupus nephritis (21 diffuse proliferative glomerulonephritis and two with focal proliferative glomerulonephritis) with impaired renal functions were evaluated for their response to pulse cyclophosphamide. Diagnosis of lupus nephritis was based on American rheumatism association criteria or on the basis of renal manifestations with high anti dsDNA antibody titres. Cyclophosphamide was given in dosage of 900mg/m2 as infusion in 500 mL of 5% dextrose (reduced by 25% if serum creatinine was more than 6 mg/dL) once every month for 6 months then 3 monthly for a minimum of 3 years. Response was defined by 24h protein excretion less than 500mg and serum creatinine less than 1.4mg/dL. Nine patients (group I) had normal function (serum creatinine 1.16 ± 0.21mg/dL) and 14 patients (group II) had impaired renal function at presentation (serum creatinine 3.72 ± 4.06 mg/dL). Both groups were compared for response to therapy. All patients in group I were in complete remission at last follow up of 44.6 ± 8.3 months (serum creatinine 1.14 ± 0.2mg/dL, 24h proteinuria 0.3 ± 0.3g). While in group 2, 13 patients showed improvement. Two patients were in complete remission, seven in partial remission, one patient died and four patients had mild renal failure at last follow up of 40.2 ± 10.4 months (serum creatinine 1.81 ± 0.74, 24h proteinuria 2.19 ± 2.54g). the side effects of therapy included infection, transient leucopenia and vomiting. We conclude that intravenous (I.V) cyclophosphamide is an effective therapy in severe lupus nephntis with renal impairment.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1440-1797.1996.tb00111.x

    Articles: DFG German National Licenses
  5. 5
    Munshi, P. ; Arora, P. ; Rathore, R.K.S.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0168-9002
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0168-9002(91)90395-7

    Articles: DFG German National Licenses
  6. 6
    Gupta, S. C. ; Arora, P. R.
    Springer
    Published 1992
    Staff View
    ISSN:
    1432-1181
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Physics
    Description / Table of Contents:
    Zusammenfassung Die analytische und numerische Lösung des Problems der symmetrischen radialen kugelförmigen Erstarrung einer ultrahocherhitzten Schmelze wurden in dieser Arbeit untersucht. Bei den Randbedingungen für Strahlung und Konvektion wurde der Wärmeübergangskoeffizient als zeitabhängig angenommen, welcher für die Zeitt=0 als unendlich betrachtet werden konnte. Dies ist notwendig für das Einsetzen des sofortigen Erstarrens der Schmelze über der gesamten Oberfläche. Die analytische Lösung besteht aus dem Verwenden geeigneter fiktiver Anfangstemperaturen und fiktiver Ausdehnungen des durch die Schmelze besetzten Anfangsbereiches. Die numerische Lösung besteht aus der Methode der finiten Differenzen, bei der die Gitterpunkte mit der Erstarrungsfront voranschreiten. Die numerische Methode kann ohne Probleme die Dichteänderungen in der flüssigen und festen Phase sowie das dadurch hervorgerufene Schrumpfen oder Expandieren des Volumens behandeln. Bei den für die sich ändernden Grenzen und Temperaturen erhaltenen numerischen Ergebnissen werden die Einflüsse der verschiedenen Parameter wie latente Wärme, Boltzmannkonstante, Dichteverhältnisse, Wärmeübergangskoeffizienten usw. gezeigt. Die Gültigkeit der numerischen Lösungen wurde zu jedem Zeitpunkt untersucht, indem die Erfüllung der Energiegleichung überprüft wurde.
    Notes:
    Abstract Analytical and numerical solutions of a general problem related to the radially symmetric inward spherical solidification of a superheated melt have been studied in this paper. In the radiation-convection type boundary conditions, the heat transfer coefficient has been taken as time dependent which could be infinite, at time,t=0. This is necessary, for the initiation of instantaneous solidification of superheated melt, over its surface. The analytical solution consists of employing suitable fictitious initial temperatures and fictitious extensions of the original region occupied by the melt. The numerical solution consists of finite difference scheme in which the grid points move with the freezing front. The numerical scheme can handle with ease the density changes in the solid and liquid states and the shrinkage or expansions of volumes due to density changes. In the numerical results, obtained for the moving boundary and temperatures, the effects of several parameters such as latent heat, Boltzmann constant, density ratios, heat transfer coefficients, etc. have been shown. The correctness of numerical results has also been checked by satisfying the integral heat balance at every timestep.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01600027

    Articles: DFG German National Licenses
  7. 7
    Arora, P. ; Kher, V. ; Rai, P. K. ; Singhal, M. K. ; Gulati, S. ; Gupta, A.
    Springer
    Published 1997
    Staff View
    ISSN:
    1432-198X
    Keywords:
    Key words: Acute renal failure ; Complications ; Multivariate analysis
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract. Various factors were analyzed in 80 consecutive children under 16 years who had acute renal failure (ARF), for various prognostic factors. Overall mortality was 42.5%, with significantly higher levels seen in hemolytic uremic syndrome (68%, P 〈0.05) and associated with cardiac surgery (90.9%, P 〈0.01). Anuria (67.6% vs. 43.5%, P 〈0.05), need for dialysis (85.3% vs. 56.5%, P 〈0.05), neurological complications (50% vs. 6.3%, P 〈0.01), and respiratory complications (35.2% vs. 2.1%, P 〈0.01) were significantly higher in nonsurvivors than survivors. Multiple regression analysis showed the presence of neurological and respiratory complications to be poor prognostic factors.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/s004670050247

    Articles: DFG German National Licenses
  8. 8
    Gulati, S. ; Kher, V. ; Gupta, A. ; Arora, P. ; Rai, P. K. ; Sharma, R. K.
    Springer
    Published 1995
    Staff View
    ISSN:
    1432-198X
    Keywords:
    Nephrotic syndrome ; Infection
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract We conducted a retrospective analysis of infections in 154 children (114 boys, 40 girls) with nephrotic syndrome who satisfied the International Study of Kidney Disease in Children criteria. Their mean age at onset of symptoms was 6.2 years (range 6 months to 16 years) and the mean duration of follow-up was 32 months (range 6–55 months). One or more infectious complications were observed in 59 of the 154 children (38%), with urinary tract infection being the commonest (13.7%), followed by pulmonary tuberculosis (10.4%), peritonitis (9.1%), skin infections (5.2%), upper respiratory infections (5.2%), lower respiratory tract infections (3.9%) and pyomeningitis (0.6%). There were 3 deaths, the mortality in 2 patients being attributable to infections. There was no significant difference between children who developed infection and those who didn't in terms of age of onset, sex, duration of disease, serum creatinine, blood urea nitrogen and 24-h proteinuria. However, the children who developed infectious complications had significantly higher serum cholesterol levels (P〈0.01) and lower serum albumin levels (P〈0.02). The frequency of infections was higher inchildren who were frequent relapsers, steroid dependent and subsequent non-responders (28/60) compared with infrequent relapsers and initial non-responders (29/94).
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00866719

    Articles: DFG German National Licenses
  9. 9
    Arora, P. N. ; Nath, P.
    Springer
    Published 1972
    Staff View
    ISSN:
    1435-926X
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mathematics
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01893294

    Articles: DFG German National Licenses
  10. 10
    Arora, P. N. ; Nath, P.
    Springer
    Published 1972
    Staff View
    ISSN:
    1435-926X
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mathematics
    Notes:
    Abstract This note deals with the entropy and inaccuracy of similarly and oppositely ordered discrete probability distributions. The concept of inaccuracy range has also been introduced. In particular, the inacuracy of β-Power distributions with respect to another distribution has been discussed in detail. It is shown that these inaccuracies are monotonically increasing function of \ for oppositely ordered distributions and decreasing function of β for similarly ordered distributions.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01893295

    Articles: DFG German National Licenses
  11. 11
    Arora, P. K. ; Ray, Suprabhat

    New York, NY : Wiley-Blackwell
    Published 1981
    Staff View
    ISSN:
    0021-8383
    Keywords:
    Chemistry ; Organic Chemistry
    Source:
    Wiley InterScience Backfile Collection 1832-2000
    Topics:
    Chemistry and Pharmacology
    Notes:
    Hydrierung von 3,4-Diarylcumarinen und 2,2-Dimethyl-3,4-diarylchromenen durch Wasserstoffübertragung
    Additional Material:
    1 Tab.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1002/prac.19813230519

    Articles: DFG German National Licenses
  12. 12
    Gupta, S. C. ; Arora, P. R.
    Springer
    Published 1988
    Staff View
    ISSN:
    1573-1987
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes:
    Abstract Short-time analytical solutions of solid and liquid temperatures and freezing front have been obtained for the outward radially symmetric spherical solidification of a superheated melt. Although results are presented here only for time dependent boundary flux, the method of solution can be used for other kinds of boundary conditions also. Later, the analytical solution has been compared with the numerical solution obtained with the help of a finite difference numerical scheme in which the grid points change with the freezing front position. An efficient method of execution of the numerical scheme has been discussed in details. Graphs have been drawn for the total solidification times and temperature distributions in the solid.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00384180

    Articles: DFG German National Licenses
  13. 13
    Raja, Nalini ; Arora, P. K. ; Chatha, J. P. S. ; Vohra, K. G.

    New York, NY : Wiley-Blackwell
    Published 1985
    Staff View
    ISSN:
    0538-8066
    Keywords:
    Chemistry ; Physical Chemistry
    Source:
    Wiley InterScience Backfile Collection 1832-2000
    Topics:
    Chemistry and Pharmacology
    Notes:
    The quenching rate constants of O2(1Δg) with n-butylamine, diethylamine, dipropylamine, dibutylamine, and tripropylamine have been determined in a discharge flow system. The rate constants are found to be (1.6 ± 0.2) × 103, (8.5 ± 0.6) × 104, (9.8 ± 0.5) × 104, (2.1 ± 0.1) × 105, and (8.6 ± 0.5) × 105 1 mol-1 s-1, respectively. The rate constants are found to increase in the order, tertiary amine → secondary amine → primary amine. The “inductive effect” of alkyl substitution is also found to increase the rate constant in a given series of amines.
    Additional Material:
    3 Ill.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1002/kin.550171208

    Articles: DFG German National Licenses
  14. 14
    Raja, Nalini ; Arora, P. K. ; Chatha, J. P. S.

    New York, NY : Wiley-Blackwell
    Published 1986
    Staff View
    ISSN:
    0538-8066
    Keywords:
    Chemistry ; Physical Chemistry
    Source:
    Wiley InterScience Backfile Collection 1832-2000
    Topics:
    Chemistry and Pharmacology
    Notes:
    The rate constants of O2(1Δg) with aliphatic alcohols, terpenes, unsaturated hydrocarbons, chlorinated hydrocarbons, oxygen, and diamines have been studied in thepresence of NO2. The rate constants for oxygen, 1,2-ethane diamine, and 1,2-propane diamine are (9.9 ± 0.4) × 102, (8.7 ± 0.7) × 104, and (1.4 ± 0.3) × 104 1/mol/s, respectively. The rate constants for all other compounds are less than the oxygen rate constant.
    Additional Material:
    3 Ill.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1002/kin.550180409

    Articles: DFG German National Licenses
  15. 15
    Chatha, J. P. S. ; Arora, P. K. ; Raja, Smt. Nalini ; Kulkarni, P. B. ; Vohra, K. G.

    New York, NY : Wiley-Blackwell
    Published 1979
    Staff View
    ISSN:
    0538-8066
    Keywords:
    Chemistry ; Physical Chemistry
    Source:
    Wiley InterScience Backfile Collection 1832-2000
    Topics:
    Chemistry and Pharmacology
    Notes:
    Relaxation rates for O2(1Σg+) by nonradiative pathways have been determined using the fast-flow technique. O2(1Σg+) is formed from O2(1Δg) by an energy pooling process. O2(1Δg) is generated by passing purified oxygen through a microwave discharge. Oxygen atoms are removed by distilling mercury vapor through the discharge zone. It has been observed that the wall loss rate for O2(1Σg+) decreases with increasing pressure of oxygen and thus appears to be diffusion controlled. Quenching rate constants for O2, N2, and He have been determined and found to be (1.5 ± 0.1) × 104, (1.0 ± 0.05) × 106 and (1.2 ± 0.1) × 105 l./mol·sec, respectively.
    Additional Material:
    6 Ill.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1002/kin.550110209

    Articles: DFG German National Licenses
  16. 16
    Raja, Nalini ; Chatha, J. P. S. ; Arora, P. K. ; Vohra, K. G.

    New York, NY : Wiley-Blackwell
    Published 1984
    Staff View
    ISSN:
    0538-8066
    Keywords:
    Chemistry ; Physical Chemistry
    Source:
    Wiley InterScience Backfile Collection 1832-2000
    Topics:
    Chemistry and Pharmacology
    Notes:
    The rate constants for the quenching of O2(1Δg) with carbon disulfide, dimethyl sulfide, dimethyl disulfide, diallyl disulfide, ethyl mercaptan, and thiophene have been determined in a discharge flow system in the absence of oxygen atoms. The rate constants are found to be (6.5 ± 0.6) × 104, (1.8 ± 0.2) × 104, and (3.5 ± 0.6) × 103 L/mol · s for dimethyl sulfide, ethyl mercaptan, and thiophene, respectively. The other compounds have rate constants 〈9.9 × 102 L/mol · s. In the case of dimethyl sulfide, even when NO2 concentration is more than what is required to remove oxygen atoms completely, the rate constants are found to vary with different amounts of NO2. No correlation is found to exist between the logarithm of the rate constants and the ionization potentials of the compounds.
    Additional Material:
    3 Ill.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1002/kin.550160303

    Articles: DFG German National Licenses