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  • Springer  (183)
  • Institute of Physics  (94)
  • 2020-2022  (95)
  • 2010-2014  (145)
  • 2000-2004  (29)
  • 1960-1964  (8)
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  • 1
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    High production of heterologous proteins in Escherichia coli using the thermo-regulated T7 expression system (2002)
    Springer
    Details
    Publikationsdatum: 2002-03-01
    Print ISSN: 0175-7598
    Digitale ISSN: 1432-0614
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Publiziert von Springer
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    AKTUELLE ARTIKEL
  • 2
    Digitale Medien
    Digitale Medien
    Tyrosine phosphate on paper chromatograms ofDrosophila melanogaster (1960)
    Springer
    Cellular and molecular life sciences 16 (1960), S. 410-411 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Zusammenfassung Es wird gezeigt, dass die auf zweidimensionalen Chromatogrammen vonDrosophila melanogaster auftretenden Ninhydrin-positiven Flecken, die als P1+P2 (Peptide) bezeichnet wurden, sehr viel freies Tyrosin-O-phosphat enthalten.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02178836
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    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Changes in DNA and RNA during embryonic development of the merogonic combinationTriton palmatus (♀) ×Triton cristatus (♂) (1961)
    Springer
    Cellular and molecular life sciences 17 (1961), S. 177-178 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Zusammenfassung Der Gehalt an RNS und DNS früher Entwicklungsstadien des BastardmerogonsTriton palmatus (♀)×Triton cristatus ♂ wurde gemessen. Es zeigt sich, dass trotz der Kern-Plasmadisharmonie diese letale Kombination in der Lage ist, beide Nukleinsäuren zu synthetisieren.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02160368
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    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Experiments concerning the incorporation of labelled adenine into ribonucleic acid in normal sea urchin embryos and in the hybridParacentrotus ♀ xArbacia ♂ (1962)
    Springer
    Cellular and molecular life sciences 18 (1962), S. 522-524 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Zusammenfassung Inkubation der Seeigelkeime mit14C-Adenin ergab, dass bei reinen Arten der Einbau der markierten Substanz in die RNS von der Mesenchymblastula bis zum Pluteus eindeutig zunimmt. Parallel zur DNS-Synthese verläuft die Zunahme beiParacentrotus undSphaerechinus viel rascher als beiArbacia. Beim Bastard PA nimmt dieser Einbauprozess mit Beginn der morphogenetischen Hemmung (nach ca. 26 h) rasch ab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02151611
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  • 5
    Digitale Medien
    Digitale Medien
    The oxidation of gallium nitride epilayers in dry oxygen (2000)
    Springer
    Applied physics 71 (2000), S. 191-194 
    Details
    ISSN: 1432-0630
    Schlagwort(e): PACS: 81.60; 61.10
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract. The oxidation of GaN epilayers in dry oxygen has been investigated. The GaN epilayers, about 1 μm thick, were grown on (0001) sapphire substrates by rapid thermal process/low pressure metalorganic chemical vapor deposition. Bulk θ-2θ X-ray diffraction (XRD) data showed that the slight oxidation of GaN began to occur at 800 °C for 6 h. The oxide was identified as the monoclinic β-Ga2O3. The GaN epilayers were completely oxidized at 1050 °C for 4 h or at 1100 °C for 1 h. For all samples, the strongest oxide’s peak is (11-3), and (30-6) followed. There is a rapid oxidation process in the initial stage of oxidation, and a relatively slow process followed when the temperature was over 1000 °C. The oxidation of two stages was limited by the rate of an interfacial reaction mechanism and by the diffusion mechanism, respectively. When the temperature reaches 1100 °C, the oxidation rate is very fast, which is considered as the results of the GaN decomposition at high temperature under atmosphere. The oxide layers were also observed by a scanning electron microscope, which shows a rough oxide surface and an expansion of the volume of 40%. The photoluminescence (PL) seriously influenced by the oxidation is also discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003390050052
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  • 6
    Digitale Medien
    Digitale Medien
    Genetic mapping of the powdery mildew resistance gene Pm6 in wheat by RFLP analysis (2000)
    Springer
    Theoretical and applied genetics 100 (2000), S. 564-568 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Key words Triticum aestivum ; Tritiam timopheevii ; Pm6 ; Introgression lines ; RFLP
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract  Pm6 in bread wheat (Triticum aestivum L.), which was transferred from Triticum. timopheevii L., is a gene conferring resistance to the powdery mildew disease caused by Erysiphe graminis f. sp. tritici. Six near-isogenic lines ( NILs ) of Pm6 in a cultivar ’Prins’ background were analyzed to map this gene using restriction fragment length polymorphism (RFLP). Each of the six NILs possessed a T. timopheevii-derived segment, varying in length, and associated with powdery mildew resistance. Lines IGV1–465 (FAO163b/ 7*Prins) and IGV1–467 (Idaed 59B/7*Prins) had the shortest introgressed segments, which were detected only by DNA probes BCD135 and PSR934, respectively. The polymorphic loci detected by both probes were mapped to the long arm of chromosome 2B. Lines IGV1–458 (CI13250/7*Prins) and IGV1–456 (CI12559/8*Prins) contained the longest T. timopheevii segments involving both arms of donor chromosome 2G across the centromere. All these introgressed segments had an overlapping region flanked by the loci xpsr934 and xbcd135 on 2BL. Thus, Pm6 was located in this region since the powdery mildew resistance in all the NILs resulted from the introgressed fragments. Using the F2 mapping population from a cross of IGV1–463 (PI170914/7*Prins)×Prins, Pm6 was shown to be closely linked to the loci xbcd135 and xbcd266 at a genetic distance of 1.6 cM and 4.8 cM, respectively. BCD135 was successfully used in detecting the presence of Pm6 in different genetic backgrounds.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s001220050074
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    Artikel (Nationallizenzen)
    Volltext
  • 7
    Digitale Medien
    Digitale Medien
    Further morphological and biochemical studies on normal and hybrid embryos of sea urchins (1964)
    Springer
    Cellular and molecular life sciences 20 (1964), S. 236-240 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Zusammenfassung (1) Es wurde bei den SeeigelartenParacentrotus ♀♂,Arbacia ♀♂ undSphaerechinus ♀♂ sowie den drei BastardenPar ♀ ×Arb ♂,Arb ♀ ×Par ♂ undPar ♀ ×Sphaer ♂ für eine Reihe von Entwicklungsstadien die Anzahl der Kerne pro Keim bestimmt (Tabelle). Der morphogenetischen Hemmung der Bastarde entsprechen herabgesetzte Kernzahlen und parallel eine Herabsetzung der DNS-Synthese. (2) Es wurde bei den genannten reinen Arten und den Bastarden derUmsatz der RNS bestimmt. Er geht in allen Fällen, bei den reinen Arten wie bei den Bastarden, der DNS- Synthese parallel.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02135426
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    Artikel (Nationallizenzen)
    Volltext
  • 8
    Digitale Medien
    Digitale Medien
    Sparse algorithms for indefinite system of linear equations (2000)
    Springer
    Computational mechanics 25 (2000), S. 33-42 
    Details
    ISSN: 1432-0924
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract  Sparse LDLT algorithms, based upon mixed forward-backward factorization strategies, are developed for direct solution of indefinite system of linear equations. A simple rotation matrix is also introduced and incorporated into 2×2 pivoting strategies. Several test problems have been conducted in order to evaluate the numerical performance of the proposed algorithms, and its associated FORTRAN codes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004660050013
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  • 9
    Digitale Medien
    Digitale Medien
    Exact solutions and geometric phase factor of time-dependent three-generator quantum systems (2003)
    Springer
    The European physical journal 23 (2003), S. 305-313 
    Details
    ISSN: 1434-6079
    Schlagwort(e): PACS. 03.65.-w Quantum mechanics – 03.65.Fd Algebraic methods – 42.50.Gy Strong-field excitation of optical transitions in quantum systems; multi-photon processes; dynamic Stark shift
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract: There exist a number of typical and interesting systems and/or models, which possess three-generator Lie-algebraic structure, in atomic physics, quantum optics, nuclear physics and laser physics. The well-known fact that all simple 3-generator algebras are either isomorphic to the algebra sl (2, C) or to one of its real forms enables us to treat these time-dependent quantum systems in a unified way. By making use of both the Lewis-Riesenfeld invariant theory and the invariant-related unitary transformation formulation, the present paper obtains exact solutions of the time-dependent Schrödinger equations governing various three-generator Lie-algebraic quantum systems. For some quantum systems whose time-dependent Hamiltonians have no quasialgebraic structures, it is shown that the exact solutions can also be obtained by working in a sub-Hilbert-space corresponding to a particular eigenvalue of the conserved generator (i.e., the time-independent invariant that commutes with the time-dependent Hamiltonian). The topological property of geometric phase factors and its adiabatic limit in time-dependent systems is briefly discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1140/epjd/e2003-00043-7
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  • 10
    Digitale Medien
    Digitale Medien
    Identification of New Drinking Water Disinfection by - Products from Ozone, Chlorine Dioxide, Chloramine, and Chlorine (2000)
    Springer
    Water, air & soil pollution 123 (2000), S. 95-102 
    Details
    ISSN: 1573-2932
    Schlagwort(e): chloramine ; chlorine ; chlorine dioxide ; disinfection by-products ; drinking water ; ozone
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik
    Notizen: Abstract Many drinking water treatment plants are currently using alternative disinfectants to treat drinking water, with ozone, chlorine dioxide, and chloramine being the most popular. However, compared to chlorine, which has been much more widely studied, there is little information about the disinfection by-products (DBPs) that these alternative disinfectants produce. Thus, it is not known if the DBPs from alternative disinfectants are safer or more hazardous than those formed by chlorine. To answer this question, we have set out to comprehensively identify DBPs formed by these alternative disinfectants, as well as by chlorine. The results presented here represent a compilation of the last 8 years of our research in identifying new DBPs from ozone, chlorine dioxide, chloramine, and chlorine. We also include results from recent studies of Israel drinking water disinfected with both chlorine dioxide and chloramine. Over 200 DBPs were identified, many of which have never been reported. In comparing by-products formed by the different disinfectants, ozone, chlorine dioxide, and chloramine formed fewer halogenated DBPs than chlorine.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1005265509813
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    Artikel (Nationallizenzen)
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