ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Thin Solid Films 178 (1989), S. 109-113 
    ISSN: 0040-6090
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Nutrient cycling in agroecosystems 48 (1997), S. 241-246 
    ISSN: 1573-0867
    Keywords: barley ; denitrification ; fertilizerefficiency ; mineralization ; nitrogen ; sludge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Enhanced microbial activity following sewage sludge land application may affect soil N cycling and, therefore, plant available N. We studied the effect of anaerobically treated sewage sludge on N-fertilizer efficiency and on some aspects of the soil N cycling. Field plots (3 m × 9 m) sown with barley (Hordeum vulgare L.) in November were amended with a) sludge (80 mg ha-1) and ammonium nitrate (150 kg N ha-1), b) ammonium nitrate (150 kg ha-1) only, c) or left unamended. Monthly soil samples were taken from 0 to 20-and 20 to 50-cm depths to determine soil inorganic N (NH4 +, NO3-). Denitrification in the upper 20-cm horizon was estimated by measuring N2O+N2 emission from undisturbed soil samples by the acetylene-inhibition technique. Crop yield parameters were analysed before harvesting, and grain production was recorded. With respect to the control, the yield increase for the N-fertilizer treatment was 85% and 45% for the sludge + N-fertilizer treatment. The decrease of N-fertilizer efficiency in sludge amended plots was presumably due to a decrease in spring plant available N. Presumably, microbial immobilisation and denitrification in organic amended treatments were responsible for the decrease in N-fertilizer efficiency.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1871-4528
    Keywords: minitubers ; in vitro plants ; autumn-winter cycle ; spring-summer cycle ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Two culture systems for propagating first generation potatoes were compared; the traditional system used a peat/sand mixture with mineral fertilizer, and hydroponic culture used perlite and nutrient solution. Total production and the number of tubers obtained using the hydroponic system were significantly higher than using the traditional culture system. Tuber yields from in vitro plants and minitubers depended upon time of year. During the autumn/winter cycle yield from minitubers was double that from in vitro plants, whereas the reverse was true during the spring/summer cycle. Four hydroponic test cultures were carried out to study the influence of seed density. The number of tubers obtained increased significantly with seed density but there was no decrease in the number of large-diameter tubers.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2016-05-04
    Description: The well-documented latitudinal clines of genes affecting human skin color presumably arise from the need for protection from intense ultraviolet radiation (UVR) vs. the need to use UVR for vitamin D synthesis. Sampling 751 subjects from a broad range of latitudes and skin colors, we investigated possible multilocus correlated adaptation of skin color genes with the vitamin D receptor gene ( VDR ), using a vector correlation metric and network method called BlocBuster. We discovered two multilocus networks involving VDR promoter and skin color genes that display strong latitudinal clines as multilocus networks, even though many of their single gene components do not. Considered one by one, the VDR components of these networks show diverse patterns: no cline, a weak declining latitudinal cline outside of Africa, and a strong in- vs. out-of-Africa frequency pattern. We confirmed these results with independent data from HapMap. Standard linkage disequilibrium analyses did not detect these networks. We applied BlocBuster across the entire genome, showing that our networks are significant outliers for interchromosomal disequilibrium that overlap with environmental variation relevant to the genes’ functions. These results suggest that these multilocus correlations most likely arose from a combination of parallel selective responses to a common environmental variable and coadaptation, given the known Mendelian epistasis among VDR and the skin color genes.
    Electronic ISSN: 2160-1836
    Topics: Biology
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Publication Date: 2013-06-20
    Description: Author(s): D. T. Adroja, A. D. Hillier, Y. Muro, J. Kajino, T. Takabatake, P. Peratheepan, A. M. Strydom, P. P. Deen, F. Demmel, J. R. Stewart, J. W. Taylor, R. I. Smith, S. Ramos, and M. A. Adams We have carried out muon spin relaxation (μSR), neutron diffraction, and inelastic neutron scattering (INS) investigations on polycrystalline samples of Ce(Ru 1− x Fe x ) 2 Al 10 ( x =0, 0.3, 0.5, 0.8, and 1) to investigate the nature of the ground state (magnetic ordered versus paramagnetic) and the origin o... [Phys. Rev. B 87, 224415] Published Wed Jun 19, 2013
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2011-03-31
    Print ISSN: 2040-8978
    Electronic ISSN: 2040-8986
    Topics: Physics
    Published by Institute of Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2021-05-19
    Description: El establecimiento de redes de áreas marinas protegidas (AMP) ecológicamente representativas es una importante herramienta de manejo con que se cuenta para proteger la biodiversidad y regular el uso de los recursos naturales marinos y costeros. Este trabajo tuvo como objetivo principal aportar elementos para el futuro diseño de una red de AMP para el norte del Caribe continental colombiano. Con la participación de expertos nacionales se identificaron 51 objetos de conservación (OdC) a diferentes niveles de organización biológica (sistemas ecológicos, comunidades ecológicas relevantes y especies) y sitios de importancia arqueológica, histórica y cultural indígena. Para cada uno de estos objetos se definieron metas de conservación cuantitativas por estrato o sistema costero (Tayrona, Palomino y Guajira), a partir de la evaluación de cuatro criterios (tipo de objeto, abundancia, condición actual y vulnerabilidad). Las metas finales determinadas para cada OdC fueron de ≤ 10, 30, 60 y 100%. Por último, a través de un sistema soporte de decisiones (SSD) llamado MARXAN, se identificó un portafolio con 63 sitios prioritarios de conservación equivalentes a un área de 129964 ha, de las cuales 71971 ha corresponden a 32 sitios considerados para ser parte de la red, al ser aplicados sobre estos criterios ecológicos de representatividad, heterogeneidad de hábitats, naturalidad y etapas de vida vulnerables. Este conjunto de áreas constituye una guía para una futura “planificación de sitio” más detallada, donde se deberán aplicar criterios sociales, económicos y político-administrativos con el fin de proponer el tipo de categoría de manejo más adecuada y estrategias de conservación específicas, para implementarlas en el corto y mediano plazo. Los sitios identificados adyacentes a las áreas protegidas existentes deberán ser tomados en cuenta como elementos de análisis para ampliar y re-alinderar dichas áreas hacia la porción marina principalmente.
    Description: Ecological representative marine protected areas (MPA) establishment is an important management tool for natural marine and coastal resources use regulation and biodiversity protection. Through a systematized selection process using MARXAN decision support system (DSS), the first Colombian Northern Caribbean MPA network was designed. Fifty-one conservation targets at different biological organization levels (ecosystems, communities and species) as well as archeological, historical, and indigenous cultural important sites were identified based on national expert knowledge. Target and coastal systems (Tayrona, Palomino, and Guajira) quantitative conservation goals were established using four criteria: type, abundance, natural condition, and vulnerability. Conservation goals ranged between ≤ 10, 30, 60, and 100%. A portfolio with 63 priority conservation sites, equivalent to an area of 129964 ha, was identified. Based on their high representativeness, habitat heterogeneity, naturalness, and vulnerable life stages 32 sites (71971 ha) were selected above all to beincluded in the MPA network. Follow up detailed “planning site” is now required to identify boundaries, shortand middle time conservation strategies and adequate national category management type proposal. Priorityconservation sites adjacent to existing protected areas are suggested as extendable areas over the submerged boundaries.
    Description: Published
    Description: Marine protected areas network, MARXAN, Conservation planning, Ecological criteria
    Keywords: Nature conservation ; Marine ecology ; Nature conservation ; Marine ecology
    Repository Name: AquaDocs
    Type: Journal Contribution
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...