ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
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
    facet.materialart.
    Unknown
    Component parts of the World Heat Flow Data Collection
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Area/locality; Conductivity, average; Depth, bottom/max; Depth, top/min; ELEVATION; Heat flow; Heat production, average; LATITUDE; LONGITUDE; Method comment; Number; Number of conductivity measurements; Number of heat production measurements; Sample, optional label/labor no; Temperature gradient
    Type: Dataset
    Format: text/tab-separated-values, 139 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    A latitudinal gradient in Darwin’s naturalization conundrum at the global scale for flowering plants (2023)
    Springer Science and Business Media LLC
    In:  Nature Communications vol. 14 no. 6244
    Details
    Publication Date: 2024-03-22
    Description: Darwin’s naturalization conundrum describes two seemingly contradictory hypotheses regarding whether alien species closely or distantly related to native species should be more likely to naturalize in regional floras. Both expectations have accumulated empirical support, and whether such apparent inconsistency can be reconciled at the global scale is unclear. Here, using 219,520 native and 9,531 naturalized alien plant species across 487 globally distributed regions, we found a latitudinal gradient in Darwin’s naturalization conundrum. Naturalized alien plant species are more closely related to native species at higher latitudes than they are at lower latitudes, indicating a greater influence of preadaptation in harsher climates. Human landscape modification resulted in even steeper latitudinal clines by selecting aliens distantly related to natives in warmer and drier regions. Our results demonstrate that joint consideration of climatic and anthropogenic conditions is critical to reconciling Darwin’s naturalization conundrum.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 3
    Electronic Resource
    Electronic Resource
    Free-running XeF(C-A) lasing at 2.2 atm in a commercial discharge excimer laser (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 62 (1993), S. 4-6 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Efficient free-running lasing on the XeF(C-A) electronic transition has been demonstrated in an unmodified commercial discharge excited excimer laser at a reduced buffer gas pressure of 2.2 atm and a moderate low pump rate of 2.76 MW/cm3, using a four-component gas mixture of Xe, NF3, Kr, and He with a net peak gain of 1.24%/cm. The laser spectrum showed a peak wavelength at 477 nm and a bandwidth of 32 nm (FWHM). The laser output energy was 1.17 mJ, representing peak power, energy density, and intrinsic efficiency values of 0.062 MW, 9 mJ/l, and 0.016%, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.108815
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Genetic diversity of small eukaryotes from the coastal waters of Nansha Islands in China (2004)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 240 (2004), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Population structures and genetic diversity of the small eukaryotic plankton from the coastal waters of the Nansha Islands in China were investigated. Two genes libraries using 18S rDNA of the marine small eukaryotes were constituted, and 323 clones were identified within alveolates (more than 43%), acanthareas, viridiplantaes, and stramenopiles. Many novel clones were detected in the two libraries, including two groups of alveolates and two clades related to both acanthareas and polycystineas. Several sequences unrelated to any other known eukaryotes may represent early branches in the phylogenetic tree. Our results reveal that there is a high diversity and abundance of small eukaryotes in the marine regions of China.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsle.2004.09.030
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Comparison of Dynamic and Fatigue Properties of Virgin and Recycled Asphalt Mixture (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 885-888 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Recycled asphalt mixture is a multiphase system, which consists of sized recycled asphaltpavement (RAP), new asphalt, and/or recycling agents and new aggregates. RAP percentages mayhave influences on performance of total recycled asphalt mixture. The performance of asphalt mixtureis significantly affected by its dynamic response and fatigue performance (crack formation andpropagation). Dynamic and fatigue properties of virgin and recycled asphalt mixture are investigatedbased on Indirect Tensile Test (ITT). It is demonstrated in test results that recycled asphalt mixture isstiffer and more elastic-like than virgin ones with RAP added. The number of load cycles to fatiguefailure expected of recycled asphalt mixture is a bit decrease compared with that of virgin ones in lowstress level. In addition, high fatigue resistance of recycled asphalt mixture is observed in this testwhen stress level is high
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.885.pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    The Investigations of Fatigue Characteristics of Porous Asphalt with Organomodified Montmorillonite Modified Asphalt (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 929-932 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this study, organomodified montmorillonite (OMMT) modified asphalt was used inporous asphalt, and fatigue characteristics of the mixtures with or without OMMT were investigated.Special attention was paid to the beam specimens aged in a forced draft oven at 60℃ for 500h. Basicfatigue information, such as stiffness, dissipated energy of the material, was obtained throughfour-point bending beam testing under different controlled strain. The classical fatigue life definitionwas used to evaluate fatigue resistance of different mixtures. The research results indicate that theOMMT mixture exhibits better fatigue and ageing resistance than the neat one. It is suggested thatOMMT should be an excellent alternative for the durability of porous asphalt
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.929.pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Application of Percolation Theory to Rock Damage and Fracture (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 1117-1120 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Rock is a kind of complex and high-disordered geological material, its damage and fractureprocess usually shows obvious criticality. In this paper, percolation theory is applied to analyze anddescribe this critical property. First, we discuss the critical fracture probability of rock throughpercolation and renormalization analysis, and present the equivalence between fracture probabilityand damage variable. Based on scaling law and the relationship between critical exponents, a criticalfractal dimension is obtained. Furthermore, according to the analysis of relationship between damageand fractal dimension, we suggest a damage-fractal formula, ω=ω0+ (D-D0)/Dc. This formula can notonly be used to describe the damage evolution through the variation of fractal dimension, but also todefine initial damage in rock. Finally, the theoretical conclusions are validated by a series of modelexperiments, and the experimental results agree with that of theoretical
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.1117.pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Experimental Investigation on Fracture and Tensile Characteristics of Micro-Surfacing Containing Crumb Rubber (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 385-387 (July 2008), p. 489-492 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The major objective of this research was to evaluate the tensile and fracture properties ofmicro-surfacing, which as a preventive maintenance surface treatment on asphalt pavement, thatformed the basis for the ISSA recommendation of an optimum micro-surfacing design incorporatingcrumb rubber. The research involved a full-factorial experiment with different rubber contents (0, 2and 5%) and different polymer modified asphalt emulsion contents ranged from 10 to 13% by totalweight of crushed aggregate in micro-surfacing. Fracture and indirect tension tests were performedon micro-surfacing beams and Marshall test samples, respectively, at two different test temperaturesof 25 and -10°C. The variables studied were indirect tensile strength, peak center-point load carried,and load-point displacement. The results show that higher mean values of indirect tensile strengthwere obtained corresponding to the highest modified asphalt emulsion content (13%), irrespective ofrubber contents, particularly at lower temperatures. A statistical analysis of the test results reveals thatthere are no significant differences among the means of most of the variables studied correspondingto different rubber contents. However, the differences are significant for different asphalt emulsioncontents
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.385-387.489.pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Effects of Conductive Fillers on the Dynamic Response and Fatigue life of Conductive Asphalt Concrete (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 348-349 (Sept. 2007), p. 145-148 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: It is currently interesting to use thermal or electrical conductive asphalt concretefor snow-melting and maintenance of asphalt pavements in winter. The addition of conductivefillers may have negative effects on the mechanical properties of asphalt concrete. Theperformance of conductive asphalt concrete is greatly affected by the initial crack and itspropagation. Laboratory tests for neat and conductive asphalt concrete include DynamicModulus Test (DMT) and Indirect Tensile Fatigue Test (ITFT). DMT tests indicates that thevalue of dynamic modulus of asphalt concrete decreases with the increasing graphite content.It means that the conductive asphalt concrete achieves lower stiffness. It can be concludedfrom ITFT tests that the fatigue life (load cycle times) of conductive asphalt concrete is morethan neat ones when stress level is under 1.0 MPa. Meanwhile higher fatigue resistance ofconductive asphalt concrete is observed when carbon fibers (2 weight % of total aggregate)were added together with 22% graphite, especially at low stress levels
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.145.pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Experimental Study on Forming Underground Space in Soil Using Explosive Lining Method (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 1121-1124 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Explosive lining is a new method to construct underground space in soil. By making themost of compressibility of soil and thixotropy of concrete under explosive loading, this method offersan efficient path to form a cavity and its concrete support layer synchronously. In order to investigatethe forming effect, a series of contrastive laboratory tests, including explosive lining method andconventional explosive compaction method, were performed under same soil and explosiveconditions. Results show that measured dynamic stress and displacement by explosive lining methodare higher than that of by conventional explosive compaction method under same equivalent radius,and the range of compact region in soil is larger too. Similarly, the physical and mechanicalperformance indexes of soil, such as water content and cohesion are superior to that of byconventional explosive compaction. It is approved that an even thickness concrete support layer canbe formed in one-shot forming process by explosive lining, and there is no evident cranny region inthe soil around the cavity
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.1121.pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...