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
    Springer
    Environmental management 1 (1977), S. 425-431 
    ISSN: 1432-1009
    Keywords: Recreatbnal impact ; Forests ; Tree growth ; Human traffic impact ; Soil compaction ; Washington County R.I.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Impact of recreational activities on soil and vegetation was evaluated in eight forested camping and picnic areas in southern Rhode Island. Forest vegetation consists of mixed-oak and white pine stands. Soils are of granitic glacial till or outwash origin and textures range from loamy sand to find sandy loam. Recreational use resulted in significant compaction of soils as indexed by soil penetration resistance and bulk density. Evidence indicates that compaction influences bulk densities to a depth of about 12.7 cm. Rates of water infiltration are less on recreation areas. Soil water accretion and depletion during the growing season are less rapid on recreation sites than on control sites. Differences are attributed to reduced infiltration, percolation, and rooting activity. Much of the ground surface on recreation areas is devoid of vegetation. The surface consists primarily of bare mineral soil, rock, or litter. The plants most commonly present are grasses. Native ground cover vegetation including tree seedlings, ericaceous shrubs and herbs has been eliminated or greatly reduced by trampling. Damage to tree trunks is common in recreation areas. White pine radial growth and scarlet oak height growth were significantly less on recreation sites. Scarlet oak appears intolerant to heavy recreation use.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Annals of biomedical engineering 3 (1975), S. 231-237 
    ISSN: 1573-9686
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract One of the main problems to technology utilization is the dynamics of the medical community. The users of the technology are not well acquainted with its potential value, the private entrepreneur (the physician) rarely purchases in quantity, and standards of manufacture have not been set. For these reasons, the medical market is unstable, risky, and expensive to enter. Most large companies get a greater return on engineering talent through mass-produced items. A means must be found to develop an interface between the inventor, the developer, the manufacturer, and the user of medical devices. The medical inventor is usually supported by grants or contracts and as such has little opportunity to develop an idea to the prototype or testing phase. Industry is sometimes unwilling and sometimes unable to invest capital and talent in expensive development and production testing. The logical middleman in the chain is the federal government. Past experience indicates that when a prototype has been developed and successfully tested through government sponsorship, industry then becomes interested in production. As a corollary to development, standardization must be established. The creation of a health caresystem where records on a consumer can be transferred from one point to another with complete understanding requires the standardization of tests, records, and many parts of the system as a whole. Any savings of scale can be accomplished only with mass production and this requires definition of a standard product.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Annals of biomedical engineering 4 (1976), S. 109-110 
    ISSN: 1573-9686
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1434-4483
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Zusammenfassung Vorliegende Studie präsentiert einen Profilvergleich des refraktiven Index-Struktur-Parameters (C n 2 ) und zwei abgeleiteter Größen, der transversalen Koherenzlänge (r 0) und des isoplanen Winkels (θ 0), aufgrund von Messungen mit einer Reihe von Instrumenten, u.a. mit einem gepulsteten 49.25-MHz-Doppler-Radar mit einer Phasenfeld-Antenne, einem Isoplanometer, einemr 0-System, einem Stellar-Scintillometer und Temperaturschwankungs-Sensoren auf einer Thermosonde. Der Radar, mit dem Datenmaterial in einer Bandbreite von 2 bis 22 km über Grund gesammelt werden konnte, war auf Datenmessungen vonC n 2 in einer Auflösung von 150 m eingestellt. Das Stellar-Scintillometer erbrachte einC n 2 -Profil definiert für 7 Höhenstufen im Bereich von 2.2 bis 18.5 km über Grund während die Thermosonde Werte in 20 m-Stufen ermittelte. Das Isoplanometer und dasr 0-System erbrachten Integral-werte bis zu einer bestimmten Höhe über Grund. Sowohl das Eichungsverfahren des Radar, als auch die Winkelabhängigkeit der Stärke des reflektierten Signals von spiegelnder Reflexion werden im folgenden besprochen, als auch die Methode zur Filterung von optischen Reflexionen imC n 2 aus den Radarreflexen durch Ausschaltung von Feuchtigkeitseinwirkungen. Zuletzt werden die Unterschiede in den Resultaten verschiedener Messungsmethoden zu klären versucht.
    Notes: Summary Comparisons are made of profiles of the refractive index structure parameter (C n 2 ) and two derived quantities, transverse coherence length (r 0) and isoplanatic angle (θ 0), from measurements taken with a suite of instruments including a 49.25 MHz pulsed Doppler radar with a phased array antenna, an isoplanometer, anr 0 system, a stellar scintillometer, and temperature fluctuation sensors mounted on a thermosonde. The radar, which obtained data from 2 to 22 km above ground level (AGL), was operated to provide 150 m height resolution ofC n 2 . The stellar scintillometer obtained aC n 2 profile defined at seven heights from 2.2 to 18.5 km AGL, while the thermosonde obtained and transmitted data every 20 m. The isoplanometer andr 0 system provided integratedpath (ground-to-space) values. The method used for calibrating the radar is discussed as well as the angular dependency of radar-returned power as influenced by specular reflections. The method used for extracting opticalC n 2 from radar reflectivity by eliminating humidity effects is discussed, as is speculation as to differences in results found from the different measurement techniques.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The three-dimensional structures of influenza virus haemagglutinins complexed with cell receptor analogues show sialic acids bound to a pocket of conserved amino acids surrounded by antibody-binding sites. Sialic acid fills the conserved pocket, demonstrating that it is the influenza virus ...
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 24 (1959), S. 1731-1733 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 59 (1937), S. 1176-1178 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 187 (1960), S. 985-989 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE endocrine system is composed of many glands in often inaccessible locations with a wealth of interrelationships. In order to investigate the individual hormones it is necessary to remove the gland, or to inhibit in some way its function. Removal is often difficult and in many cases impossible. ...
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    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...