Search Results - (Author, Cooperation:N. Larsen)
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1Latest Papers from Table of Contents or Articles in PressB.N.V. Edwards, E. Bernard, E.M. Boulton, N. Destefano, M. Gai, M. Horn, N. Larsen, B. Tennyson, L. Tvrznikova, C. Wahl and D.N. McKinsey
Institute of Physics Publishing (IOP)
Published 2018Staff ViewPublication Date: 2018-01-11Publisher: Institute of Physics Publishing (IOP)Electronic ISSN: 1748-0221Topics: PhysicsPublished by: -
2Latest Papers from Table of Contents or Articles in PressG. L. Manney ; M. L. Santee ; M. Rex ; N. J. Livesey ; M. C. Pitts ; P. Veefkind ; E. R. Nash ; I. Wohltmann ; R. Lehmann ; L. Froidevaux ; L. R. Poole ; M. R. Schoeberl ; D. P. Haffner ; J. Davies ; V. Dorokhov ; H. Gernandt ; B. Johnson ; R. Kivi ; E. Kyro ; N. Larsen ; P. F. Levelt ; A. Makshtas ; C. T. McElroy ; H. Nakajima ; M. C. Parrondo ; D. W. Tarasick ; P. von der Gathen ; K. A. Walker ; N. S. Zinoviev
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-10-04Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Antarctic Regions ; Arctic Regions ; Atmosphere/*chemistry ; Chlorine/chemistry ; *Environmental Monitoring ; History, 20th Century ; History, 21st Century ; Ozone/*analysis/chemistry/history ; Seasons ; Time FactorsPublished by: -
3Articles: DFG German National LicensesStaff View
ISSN: 0021-9673Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
4Latest Papers from Table of Contents or Articles in PressFinci, L. I., Zhang, X., Huang, X., Zhou, Q., Tsai, J., Teng, T., Agrawal, A., Chan, B., Irwin, S., Karr, C., Cook, A., Zhu, P., Reynolds, D., Smith, P. G., Fekkes, P., Buonamici, S., Larsen, N. A.
Cold Spring Harbor Laboratory Press
Published 2018Staff ViewPublication Date: 2018-03-06Publisher: Cold Spring Harbor Laboratory PressPrint ISSN: 0890-9369Topics: BiologyPublished by: -
5Latest Papers from Table of Contents or Articles in PressKjaer, K. H., Larsen, N. K., Binder, T., Bjork, A. A., Eisen, O., Fahnestock, M. A., Funder, S., Garde, A. A., Haack, H., Helm, V., Houmark-Nielsen, M., Kjeldsen, K. K., Khan, S. A., Machguth, H., McDonald, I., Morlighem, M., Mouginot, J., Paden, J. D., Waight, T. E., Weikusat, C., Willerslev, E., Mac; Gregor, J. A.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-11-15Publisher: American Association for the Advancement of Science (AAAS)Electronic ISSN: 2375-2548Topics: Natural Sciences in GeneralPublished by: -
6Articles: DFG German National LicensesAkselrod, M. S. ; Agersnap Larsen, N. ; Whitley, V. ; McKeever, S. W. S.
[S.l.] : American Institute of Physics (AIP)
Published 1998Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Using time-resolved photoluminescence spectroscopy we have measured the lifetime of the F-center luminescence from α-Al2O3:C. The measurements reveal a lifetime of 35–36 ms at room temperature, decreasing to 〈2 ms over the temperature range from 370 to 500 K. The decrease in the lifetime is shown to follow a classical Mott-Seitz dependence for thermal quenching of luminescence, with an activation energy W of ∼1.08±0.03 eV and a corresponding frequency factor ν of ∼1014 s−1. Similar values for the energy and frequency factor were also obtained from an analysis of thermoluminescence (TL) glow curves measured at different heating rates, when the TL is measured over a wavelength range corresponding to the F-center luminescence emission (centered at 420 nm). Furthermore, the parameters obtained were independent of the glow curve shape, the degree of trap filling, or the specific conditions under which the crystals were grown. This is interpreted as a demonstration that the well-known heating rate dependence of the TL from this material is a result of thermal quenching of the F-center emission. Whereas the thermal quenching parameters obtained from measurement of the luminescence lifetime and from the heating rate analysis of the TL glow curves are independent of the sample type, the degree of trap filling, and the heating or cooling rate, measurements of the photoluminescence intensity, induced by absorption of F-band light, were found to be dependent upon all of the above conditions. This difference in behavior is attributed to a phosphorescence signal from traps associated with the ∼265, ∼310, and ∼450 K TL peaks. © 1998 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesPoulsen, L. K. ; Larsen, N. W. ; Molin, S. ; Andersson, P.
Oxford, UK : Blackwell Publishing Ltd
Published 1989Staff ViewISSN: 1365-2958Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyMedicineNotes: The relF gene in Escherichia coli is related to the hok gene on plasmid R1. Both genes encode small proteins which, when overexpressed In E. coli lead to collapse of the membrane potential and cell death. A third gene, designated gef, which encodes a homologous cell-toxic protein, has been isolated from E. coli DNA. Both gef and relF are transcribed in E. coli and subject to post-transcriptional regulation which, in the case of gef, is coupled to translation of a leader sequence. The finding of homologous sequences in such distantly related bacteria as Agrobacterium and Rhizobium species suggests an important physiological role.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesSjö, O. ; Hvidberg, E. F. ; Larsen, N.-E. ; Lund, M. ; Næstoft, J.
Oxford, UK : Blackwell Publishing Ltd
Published 1975Staff ViewISSN: 1440-1681Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: 〈list xml:id="l1" style="custom"〉1A gas-chromatographic assay for the anticonvulsant drug ethotoin in plasma has been used to establish a kinetic basis for therapy in eight newly diagnosed epileptic patients.2Only a small fraction of ethotoin was excreted unchanged. Elimination curves were only rectilinear below a plasma concentration of 8 mg/l. During constant medication plasma concentrations tended to decrease in the first week. Steady-state plasma levels varied considerably between individuals. For all patients the plasma concentration/dose ratio increased with increasing dose.3Most of the results point to dose-dependent elimination kinetics in the therapeutic range and parallel what is known for phenytoin. Control of therapy by measurement of plasma levels of ethotoin is accordingly advocated.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesReuther, L. O. ; Sonne, J. ; Larsen, N. ; Dahlerup, J. F. ; Thomsen, O. O. ; Schmiegelow, K.
Oxford, UK : Blackwell Science Ltd
Published 2003Staff ViewISSN: 1365-2036Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Background : Inter-individual response to azathioprine is partly due to inter-individual variation in the thiopurine methyltransferase (TPMT) activity. The TPMT genotype, which reflects the TPMT activity, has previously been studied in healthy Caucasians, with the most common variant allele being TPMT*3A. TPMT genotyping in adult patients with Crohn's disease has never been performed systematically.Aim : To determine the TPMT genotype distribution in adult patients with Crohn's disease.Methods : One hundred and twenty randomly selected Danish patients (64 females and 56 males) with azathioprine-dependent Crohn's disease were included, and a polymerase chain reaction assay was used for TPMT genotyping. The patients were genotyped for the low-level genotype G460→A and A719→G transitions.Results : One hundred and nine patients (90.3%; 95% confidence interval, 84.1–95.3) had a wild-type/ wild-type genotype, whereas 10 patients (8.3%; 95% confidence interval, 4.1–14.8) had one non-functional mutant allele and one patient (0.8%; 95% confidence interval, 0.02–4.6) had two non-functional mutant alleles. Only the TPMT*3A variant allele was found.Conclusions : The study showed a TPMT genotype distribution amongst adult Danish patients with Crohn's disease which was similar to the distribution of TPMT variant alleles normally found in healthy Caucasians.Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 0020-1693Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 0009-8981Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MedicineType of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesChristiansen, C. ; Naestoft, J. ; Hvidberg, E.F. ; Larsen, N.-E. ; Petersen, B.
Amsterdam : ElsevierStaff ViewISSN: 0009-8981Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MedicineType of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 0009-8981Keywords: Hydroxyproline assay ; UrineSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MedicineType of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 0021-9673Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesStaff View
ISSN: 0021-9673Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesStaff View
ISSN: 0021-9673Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesStaff View
ISSN: 0021-9673Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesStaff View
ISSN: 0021-9673Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesStaff View
ISSN: 0378-4347Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesStaff View
ISSN: 0378-4347Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyType of Medium: Electronic ResourceURL: