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  • 1
    Online Resource
    Online Resource
    Variability of residence time in the Tropical Tropopause Layer during Northern Hemisphere winter (2009)
    Associated volumes
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    In: Atmospheric chemistry and physics, Katlenburg-Lindau : EGU, 2001, 9(2009), 18, Seite 6717-6725, 1680-7324
    In: volume:9
    In: year:2009
    In: number:18
    In: pages:6717-6725
    Description / Table of Contents: The residence time TLCP-400 K, being the duration time of air parcels in the layer between the Lagrangian Cold Point (LCP) and 400 K, varies spatially and is longer (〉50 days) over the maritime continent as the LCP is lowest there (〈370 K). Comparing three theta layers within the TTL reveals the vertical dependence of ?. We derive a mean duration time of 34 days for 360380 K (lower TTL), 38 days for 380400 K (upper TTL) and 70 days for 360400 K theta layers for the 19622001 period. A case analysis reveals that T is positively skewed for 360380 K and 380400 K during La Niña and El Niño Southern Oscillation (ENSO) neutral years. For these cases, ~60% of air parcels travel from 360 K to 380 K within 25 days. There is large interannual variability for T varying up to ±20% from the long-term mean, with strongest variability seen in the lower part of the TTL. Statistical analysis reveals a significant anti-correlation between the residence time and the extratropical and subtropical wave driving in the lowermost stratosphere.
    Type of Medium: Online Resource
    Pages: graph. Darst
    ISSN: 1680-7324
    URL: http://www.atmos-chem-phys.net/9/6717/2009/acp-9-6717-2009.html
    DOI: 10.5194/acp-9-6717-2009
    Language: English
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  • 2
    E-Resource
    E-Resource
    Long-term climatology of air mass transport through the Tropical Tropopause Layer (TTL) during NH winter (2008)
    Associated volumes
    Details Availability
    In: Atmospheric chemistry and physics, Katlenburg-Lindau : EGU, 2001, 8(2008), 4, Seite 813-823, 1680-7324
    In: volume:8
    In: year:2008
    In: number:4
    In: pages:813-823
    Description / Table of Contents: A long-term climatology of air mass transport through the tropical tropopause layer (TTL) is presented, covering the period from 19622005. The transport through the TTL is calculated with a Lagrangian approach using radiative heating rates as vertical velocities in an isentropic trajectory model. We demonstrate the improved performance of such an approach compared to previous studies using vertical winds from meteorological analyses. Within the upper part of the TTL, the averaged diabatic ascent is 0.5 K/day during Northern Hemisphere (NH) winters 19922001. Climatological maps show a cooling and strengthening of this part of the residual circulation during the 1990s and early 2000s compared to the long-term mean. Lagrangian cold point (LCP) fields show systematic differences for varying time periods and natural forcing components. The interannual variability of LCP temperature and density fields is found to be influenced by volcanic eruptions, El Niño Southern Oscillation (ENSO), Quasi-Biennial Oscillation (QBO) and the solar cycle. The coldest and driest TTL is reached during QBO easterly phase and La Niña over the western Pacific, whereas during volcanic eruptions, El Niño and QBO westerly phase it is warmer and less dry.
    Type of Medium: Electronic Resource
    ISSN: 1680-7324
    Language: English
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  • 3
    Electronic Resource
    Electronic Resource
    The Apparent Stability Constants of Ionic Complexes of Various Adenosine Phosphates with Divalent Cations1,2 (1956)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 78 (1956), S. 2376-2380 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01592a009
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  • 4
    Electronic Resource
    Electronic Resource
    Bathymetric patterns of genetic variation in a deep-sea protobranch bivalve, Deminucula atacellana (1998)
    Springer
    Marine biology 131 (1998), S. 301-308 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The origin of the deep-sea benthic fauna is poorly understood and represents an enormous gap in our understanding of basic evolutionary phenomena. One obstacle to studying evolutionary patterns in the deep sea has been the technical difficulty of measuring genetic variation in species that are typically minute, rare, and must be recovered from extreme depths. We used molecular genetic techniques to quantify variation in the 16S rRNA mitochondrial gene within and among populations of the common protobranch bivalve Deminucula atacellana (Schenck, 1939). We analyzed 89 individuals from nine samples collected in the 1960s along a depth gradient from 1100 to 3800 m in the western North Atlantic. Genetic variability within populations is much lower than between populations, and peak haplotype numbers occur near the center of its depth distribution. Continental slope (〈2500 m) and rise (〉2500 m) populations were genetically distinct despite the lack of any obvious topographic or oceanographic features that would impede gene flow. These findings indicate that the deep-sea macrofauna can have strong population structure over small (134 km) spatial scales, similar to that observed in shallow-water and terrestrial organisms. This surprisingly high biodiversity at the genetic level affords the potential for adaptation and evolutionary diversification, the ultimate historical causes of high species diversity in the deep-sea benthos.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050323
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  • 5
    Electronic Resource
    Electronic Resource
    Chick HoxB3: deduced amino-acid sequence and embryonic gene expression
    Amsterdam : Elsevier
    Gene 149 (1994), S. 381-382 
    Details
    ISSN: 0378-1119
    Keywords: Homeobox ; rhombomeres ; sequence comparison
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0378-1119(94)90183-X
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  • 6
    Electronic Resource
    Electronic Resource
    Community Structure in the Deep-Sea Benthos (1981)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Ecology, Evolution, and Systematics 12 (1981), S. 331-353 
    Details
    ISSN: 0066-4162
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.es.12.110181.001555
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  • 7
    Electronic Resource
    Electronic Resource
    THE DISTRIBUTION OF CALCIUM-DEPENDENT PHOSPHATIDYLINOSITOL-SPECIFIC PHOSPHODIESTERASE IN RAT BRAIN (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 31 (1978), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— The properties of Ca2+-dependent phosphatidylinositol-phosphodiesterase in membrane fractions and supernatants prepared from rat brain have been examined with the aim of providing firm evidence for the existence of a membrane-bound activity distinct from the soluble enzyme found in the cytosol (EC 3.1.4.10). The soluble enzyme is either stimulated or inhibited at pH 7.0 by deoxycholate depending on the ratio of detergent to substrate. The effects of deoxycholate are pH dependent and result in a shift of the enzyme optimum to a higher pH if the enzyme is assayed in the presence of deoxycholate. The soluble enzyme cannot hydrolgse membrane-bound phosphatidylinositol (in 32P-labelled rat liver microsomes) unless deoxycholate is present. The pH optimum is 6.7 for this detergent-dependent hydrolysis and this is probably dependent on the ionization of deoxycholic acid. The lactate dehydrogenase (EC 1.1.1.27) content of rat brain membrane fractions has been measured to estimate the contamination of these fractions by supernatant phosphatidylinositol-phosphodiesterase. No evidence has been found for phosphatidylinositol-phosphodiesterase activities that cannot be explained by such contamination. It is concluded that all the properties of calcium-dependent phospha-tidylinositol-phosphodicsterase in rat brain can be explained by the existence of only the solublc cyto-plasmic enzyme: no evidence confirming a distinct membrane-bound activity has been obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1978.tb06568.x
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  • 8
    Electronic Resource
    Electronic Resource
    Development of a mental health programme in the Central Coast of New South Wales, Australia (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of advanced nursing 5 (1980), S. 0 
    Details
    ISSN: 1365-2648
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The Central Coast Programme is considered to have begun in December 1969 with the arrival and commitment of Dr Donald Scott-Orr (specialist psychiatrist) in the Central Coast, and with the parallel commitment of the then Medical Superintendent of Morisset Hospital, Dr Howard Gorton to support the development of a regional programme for the Central Coast. It was decided not to re-establish any clinics and so avoid waiting lists. There was an emphasis on groups as a means of interaction and a family orientation in the work.In the early years the role of the nurse was changing. Initially, the extramural role was expected by the hospital to be ‘following-up’ patients. However, the service was based on commitment to a community rather than hospital. Increasingly the nurses’ work was directly referred to them independently of hospital admissions. Staff visited general practitioners (GPs) on the Central Coast in their surgeries and regular letters were sent keeping the GPs informed of changes in the service. Consultations and transactions were recorded on referral forms and files were opened on all persons concerning whom the service was consulted. A client's name was always linked with the name of their general practitioner who was encouraged to make telephone contact freely to seek consultative support in connection with problems in their practice.Priority for crisis intervention and orientation towards family and group was backed up by domiciliary visits and widespread communication and consultation. The attempt was made to use therapeutic community principles for the in-patient programme. The processes of care were seen as being as important as the content of care in assuring an optimum quality care.There is a continuing need to focus on the flexible interchange between intra- and extramural staff in providing continuity for clients in care and integration with primary care services and agencies. In January 1978 Dr Max Chapman was appointed director of the psychiatric and mental health services on the Central Coast and he is currently in that position.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2648.1980.tb00980.x
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  • 9
    Electronic Resource
    Electronic Resource
    The Apparent Stability Constants of Ionic Complexes of Various Adenosine Phosphates with Monovalent Cations. (1956)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 60 (1956), S. 180-184 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150536a010
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  • 10
    Electronic Resource
    Electronic Resource
    The application of toluene dioxygenase in the synthesis of acetylene-terminated resins (1990)
    Springer
    Applied microbiology and biotechnology 34 (1990), S. 316-321 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary A biotransformation procedure has been developed to prepare intermediates for the synthesis of 3-hydroxyphenylacetylene (3-HPA), a high-value specialty chemical used in the manufacture of acetylene-terminated resins. Pseudomonas putida F39/D containing toluene dioxygenase was used to oxidize a series of substituted benzenes to their respective cis-2,3-dihydroxydihydrobenzene(cis-dihydrodiol) derivatives which in turn could be converted to 3-HPA via a meta-phenol intermediate obtained by acid-catalyzed dehydration. The cis-dihydrodiols derived from the oxidation of phenylacetylene, styrene, acetophenone, and bromobenzene dehydrated to yield predominantly ortho-phenols. Three different phenyl-1,3-dioxolanes were oxidized by P. putida F39/D to three previously undescribed cis-dihydrodiols. Unlike mono-substituted cis-dihydrodiols, phenyl-1,3-dioxolane cis-dihydrodiols were dehydrated to form meta-phenols exclusively. The dehydration products, 3-hydroxyacetophenone and 3-hydroxybenzaldehyde, are suitable precursors for the chemical synthesis of 3-HPA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00170050
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