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
    Publication Date: 2021-02-10
    Description: This open access Springer Brief provides a systematic analysis of current trends and requirements in the areas of knowledge and competence in the context of the project “(A) Higher Education Digital (AHEAD)—International Horizon Scanning / Trend Analysis on Digital Higher Education.” It examines the latest developments in learning theory, didactics, and digital-education technology in connection with an increasingly digitized higher education landscape. In turn, this analysis forms the basis for envisioning higher education in 2030. Here, four learning pathways are developed to provide a glimpse of higher education in 2030: Tamagotchi, a closed ecosystem that is built around individual students who enter the university soon after secondary education; Jenga, in which universities offer a solid foundation of knowledge to build on in later phases; Lego, where the course of study is not a monolithic unit, but consists of individually combined modules of different sizes; and Transformer, where students have already acquired their own professional identities and life experiences, which they integrate into their studies. In addition, innovative practice cases are presented to illustrate each learning path.
    Keywords: Higher Education ; Organization ; International and Comparative Education ; Business and Management ; Higher education systems ; Learning pathways ; Education organizations ; Practical case studies in education ; New didactics and learning theories ; Knowledge in a Digitalized World ; Digital learning ; Open Access ; Higher & further education, tertiary education ; Organizational theory & behaviour ; Education ; bic Book Industry Communication::J Society & social sciences::JN Education::JNM Higher & further education, tertiary education ; bic Book Industry Communication::K Economics, finance, business & management::KJ Business & management::KJU Organizational theory & behaviour ; bic Book Industry Communication::J Society & social sciences::JN Education
    Language: English
    Format: image/jpeg
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Summary Temporally-limited internal irradiation after incorporation of short-lived bone-seeking radionuclides is a useful experimental tool for the investigation of extrinsic and intrinsic factors which modify the dose dependence of bone tumor risk. Here we describe some of the results obtained in experiments with female mice (mainly NMRI). The future aim of such experiments should be the prediction of risk of late effects using early molecular-biological changes. Molecular-biological descriptions in our model are at present very limited.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Radiation and environmental biophysics 24 (1985), S. 17-25 
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Summary Sensitive cocultivation techniques were applied to study the radiation-induced activation of endogenous retroviral genomes in different mouse strains by the alpha-emitting radionuclide224Radium. Activated infectious C-type retroviruses were detected in spleen, bone marrow and bone tissues of C57BL/6-, BALB/c- and NMRI mice. The titres of high-dose-irradiated animals were higher than those found in low-dose-irradiated animals. Infectious retrovirus could be detected with a dose of 13.2 rad (maximum dose rate 0.9 rad/day) in the skeleton, and a dose of 4.2 rad (maximum dose rate 0.3 rad/day) in the spleen. The virus activation pattern was different in the three mouse strains. These data indicate that activation of endogenous retroviral genomes by alpha-irradiation shows a dose-effect relationship and a dependence on the genetic background of the mouse.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1432-1351
    Keywords: Key words Motor pattern switching ; Dynamic clamp ; Single-electrode voltage clamp ; Leech
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The motor program for heartbeat in the medicinal leech is produced by a central pattern generator that regularly switches between two alternative coordination states. A pair of switch heart interneurons reciprocally alternate between rhythmically active and inactive states to effect these switches. During spontaneous switches in the activity state of switch interneurons, there was no correlation between the duration of a particular activity state and beat period, indicating that the timing networks for the switch cycle and the beat cycle are relatively independent. Simultaneous recordings from two switch heart interneurons showed that a perturbation in the electrical activity of one does not influence switching of the other and that there is no synaptic interaction between them. Using voltage clamp, we characterized an L-like Ca2+ current (measured as Ba2+ currents), inactivating and non-inactivating K+ currents, a persistent Na+ current, and a hyperpolarization-activated inward current in switch interneurons. Dynamic clamp experiments show that “subtraction” of an artificial switch leak conductance (described previously by Gramoll et al. 1994) from a switch interneuron when it is in the inactive state causes it to display activity associated with the active state. We discuss how the switch leak conductance may interact with the intrinsic currents of switch interneurons to control their activity state.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 182 (1998), S. 501-507 
    ISSN: 1432-1351
    Keywords: Key words Photoinactivation ; Glial cells ; Motor pattern ; Synapse ; Invertebrate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The activity of heart interneurons (HN cells) and heart motor neurons in the central nervous system of the medicinal leech was recorded intracellularly from their cell bodies in the third and fourth segmental ganglion (G3 and G4, respectively). Reciprocal inhibitory synaptic transmission between HN cells in the G3 was blocked by photoinactivation of neuropil glial cells in the same ganglion. The block disrupted the alternating rhythmic spike activity of HN cells in the G3 in isolated G3s but not in chains of G3 and G4. In the latter case, the rhythmic spike pattern of HN cells in the G3 appears to originate in the G4 because, for example, severing one connective between the G3 and G4 silenced the ipsilateral heart interneuron in the G3, whereas its contralateral homologue remained rhythmically active. Simultaneous recordings from HN cells in the G3 and G4 suggest that the latter may serve to coordinate the rhythmic activity of HN cells in the G3, when synaptic interaction between HN cells in the G3 is blocked. This study reveals a considerable capacity of the neural network controlling the heart beat to compensate for the impairment of synapses within one ganglion.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1432-2048
    Keywords: Freezing damage ; Frost hardening ; Salt treatment ; Spinacia (frost hardening) ; Thylakoid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Frost hardiness of spinach (Spinacia oleracea L.) leaves was increased by high concentrations of NaCl in the hydroponic culture medium. Freezing damage was determined by measurement of slow chlorophyll fluorescence quenching after freezing of leaves. Both the osmolality of the leaf sap and forst hardiness of the leaves were linearly correlated with the salt concentration in the hydroponic culture medium. Freezing damage occurred, irrespective of the extent of frost hardening, when dehydration of cells during extracellular ice formation decreased cellular volume to approximately 14% of the volume of unfrozen cells. The resistance of isolated, washed thylakoids against mechanical and chemical damage by freezing was investigated. Chemical damage by freezing caused by salt accumulation was measured as release of chloroplast coupling factor (CF1; EC 3.6.1.3), and mechanical damage was measured as release of the lumenal protein plastocyanin from the membranes during an in-vitro freeze-thaw cycle. Isolated thylakoids from salt-treated frost-hardy spinach and those from plants hardened under natural conditions did not exhibit improved tolerance against chemical freezing stress exerted by high salt concentrations. They were, however, more hardy than thylakoids from unhardened control leaves against mechanical damage by freezing.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Planta 21 (1933), S. 387-395 
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Microbial ecology 31 (1996), S. 281-290 
    ISSN: 1432-184X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Holdfast exopolymers of the dimorphic oligotrophic bacterium Seliberia stellata were examined using fluorescent lectins under light microscopy and colloidal gold lectins using transmission electron microscopy. Examination using fluorescent-labeled lectins revealed that lectins specific for polysaccharides and monosaccharides such as glucose and/or mannose, galactose, N-acetylgalactosamine, and N-acetylglucosamine (and its dimer) adhered to holdfast structure. Colloidal gold-labeled lectin assays also suggested the presence of these sugars. Both the holdfast that mediates swarmer cell adhesion and the holdfast that facilitates rosette formation gave similar results, suggesting the structures may be the same. Another exopolymer produced later in the growth cycle was observed using transmission electron microscopy. It appeared as an amorphous glycocalyx-like material very different from holdfast exopolymers. Retention of the gold lectin Wheat Germ Agglutinin (WGA), suggested the presence of N-acetylglucosamine, but fluorescent analyses were unsuccessful. The data suggest that S. stellata produces at least two different exopolymers: (a) the exopolymer of the swarmer cell and rosette holdfast whose function is adhesion and whose composition is (but may not be limited to) polysaccharides and (b) a slime-like exopolymer whose composition and function remain unknown.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 172 (1993), S. 447-456 
    ISSN: 1432-1351
    Keywords: Locust ; Common inhibitor ; Mechanoreceptors ; Interneurons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Intracellular recordings of mesothoracic common inhibitory neurons (CI1, CI2 and CI3) were made while tactile hairs of the middle legs of locusts (Locusta migratoria) were mechanically stimulated. Generally the three common inhibitory neurons were excited by stimulation of tactile hairs on the ventral and dorsal surface of femur and tibia. The response pattern of all three CI neurons was similar suggesting that they work as a functional unit. Touching hairs on the dorsal surface of tibia and tarsus in some cases led to inhibition of CIs. The connection between sensory cells of tactile hairs and common inhibitory neurons is polysynaptic. To identify interneurons which mediate afferent signals, simultaneous intracellular recordings from CIs and interneurons were made. Different spiking interneurons were identified which made excitatory or inhibitory monosynaptic connections with CIs. Interneurons with inhibitory input to CIs belonged to the ventral midline group of spiking local interneurons. Behavioral and electrophysiological results indicate that reflex movements of the leg are accompanied by activity of CI neurons. Further it appears that CI activity is inhibited when reflex movements of the leg are actively suppressed by the animal.
    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...