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
    Electronic Resource
    Electronic Resource
    Additions and Corrections-Studies on Geometric Isomerism by Nuclear Magnetic Resonance. I. Stereochemistry of α-Cyano-βalkyl-acrylic Esters (1965)
    s.l. : American Chemical Society
    The @journal of organic chemistry 30 (1965), S. 4395-4395 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo01023a618
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Studies on Geometric Isomerism by Nuclear Magnetic Resonance. I. Stereochemistry of α-Cyano-β-alkoxy-β-alkylacrylic Esters1 (1965)
    s.l. : American Chemical Society
    The @journal of organic chemistry 30 (1965), S. 695-699 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo01014a009
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Exercise Proteinuria and Proteinuria induced by Kallikrein (1968)
    [s.l.] : Nature Publishing Group
    Nature 218 (1968), S. 481-483 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To examine the effect of heavy muscular exercise on kallikrein activity and the excretion of protein into the urine, we took urine samples from five healthy subjects at rest, just about to run, while running and 30 min after running. Urinary kallikrein was prepared as follows. Human urine taken ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/218481b0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Separation of Two Kinds of Polymerase from Alcaligenes faecalis * (1966)
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 604-608 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SINCE the studies of Kornberg and his colleagues on the deoxyribonucleic acid polymerase of Escher-ichia coli1, similar enzymes have been demonstrated in various sources. In general, the physical state required for the template DNA varies with the species from which the enzyme is prepared. One is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/210604a0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    OPTIMAL HEART RATE IN CARDIAC PACING IN CORONARY SCLEROSIS AND NON-SCLEROSIS (1969)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 167 (1969), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1969.tb34134.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Inspiration and Expiration Inhibitory System (1966)
    [s.l.] : Nature Publishing Group
    Nature 212 (1966), S. 1590-1591 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Several investigators have recorded unit activities of the medullary respiratory neurone, but little is known about the unit discharge when respiration is modified by mid-pontine or medullar transection. During the inspiratory response caused by low frequency vagal stimulation6, the expiratory ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2121590a0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Histochemical demonstration of ATP: creatine phosphotransferase in rat skeletal muscle (1966)
    Springer
    Histochemistry and cell biology 7 (1966), S. 297-302 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary An attempt was made to locate the ATP: creatine phosphotransferase (creatine kinase, CKase) in rat skeletal muscle by a lead precipitation method. The muscle is not stained at all with creatine phosphate (CP), and only weakly with adenosine diphosphate (ADP) as substrate, while it hydrolyzes adenosine triphosphate (ATP) actively. Taking advantage of this fact, it is possible to demonstrate the CKase activity using both ADP and CP as substrate. The CKase activity thus obtained was located in various profiles of sarcoplasmic reticulum as well as in A bands, the staining being comparable to that obtained with ATP as substrate. A weak activity was found only in cisternal dilatations of sarcoplasmic reticulum when sections were incubated with ADP as substrate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00306616
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    The behavior of nuclei in germinating pollen grains of wheat, rice and maize (1966)
    Springer
    Theoretical and applied genetics 36 (1966), S. 145-150 
    Details
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Bei 3 Gramineenarten,Triticum aestivum, Oryza officinalis undZea mays, wurde das Verhalten der Zellkerne im keimenden Pollenkorn untersucht. In allen 3 Fällen enthalten die Pollenkörner normalerweise einen vegetativen Kern und zwei Spermakerne, die meist an der der Keimpore gegenüberliegenden Seite des Pollenkorns liegen. Die Keimung auf der Narbe beginnt nach 3–5 Minuten. In den Pollenschlauch treten zuerst die beiden Spermakerne ein. BeiTriticum bleibt der vegetative Kern häufig im Pollenkorn, beiOryza undZea dagegen folgt er fast immer den Spermakernen. Leere Pollenkörner wurden 30 Minuten nach der Bestäubung beobachtet. Die Keimung verläuft nicht einheitlich; nach 24 Stunden konnten noch Pollenkörner 5 verschiedener Keimungsstadien gefunden werden. Wahrscheinlich werden die Spermakerne während der Keimung passiv durch die Plasmaströmung zum Pollenschlauch bewegt, da sie der Keimpore näher liegen als der vegetative Kern. Der vegetative Kern scheint eng mit dem Zytoplasma verbunden zu sein und liegt von der Keimpore weit entfernt. Vielleicht sind dies die Hauptgründe dafür, daß der vegetative Kern später als die Spermakerne in den Pollenschlauch eintritt. Auf Grund einer früheren Untersuchung des älteren Verfassers wird eine ausführliche Beschreibung der Bewegungen der Kerne während der Pollenbildung gegeben. Das Verhalten der Kerne während der Gametogenese folgt einer bestimmten Richtung, die auf ein autonomes Agens in den Bewegungen der vegetativen und, besonders, der generativen Kerne schließen läßt.
    Notes: Summary 1. Three species of Gramineae were used for obeservations on the behavior of the tube nucleus and sperm nuclei in germinating pollen grains ofTriticum aestivum, Oryza officinalis andZea mays. 2. In general all three species follow the same pattern in the behavior of the three nuclei. 3. Normal pollen grains contain one tube nucleus and two sperm nuclei which usually lie on the side of the grain opposite to the one containing the germ pore. 4. Germination of the pollen grains on the stigma starts after 3–5 minutes. 5. Two sperms enter the pollen tube and the tube nucleus follows. 6. In wheat, the tube nucleus remains frequently in the pollen grain, while it almost always emigrates inOryza andZea. 7. Empty pollen grains could be observed in wheat 30 minutes after pollination. 8. Germination of the pollen grains is not uniform. Even after 24 hours we found pollen grains at five different stages of germination. 9. The regular sequence in the movement of male and vegetative nuclei is rarely disturbed. 10. It is likely that male gametes are transported passively by the cytoplasmic stream to the pollen tube during germination, since they lie nearer to the germ pore than to the tube nucleus. 11. It is suggested that autonomous movement of male gametes may act as auxiliary agent in transportation. 12. The tube nucleus seems to be intimately connected with the cytoplasm and is located far from the germ pore. This may be the main reason why the tube nucleus enters the pollen tube later than the sperm nuclei. 13. The movements of the vegetative and generative nuclei during pollen formation are given in detail based on an old investigation by the senior author. 14. The behavior of nuclei during gametogenesis follows a definite course, indicating autonomy in the movements of the vegetative as well as the generative nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02394151
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    The behavior of nuclei in germinating pollen grains of wheat, rice and maize (1966)
    Springer
    Theoretical and applied genetics 36 (1966), S. 145-150 
    Details
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Bei 3 Gramineenarten, Triticum aestivum, Oryza officinalis und Zea mays, wurde das Verhalten der Zellkerne im keimenden Pollenkorn untersucht. In allen 3 Fällen enthalten die Pollenkörner normalerweise einen vegetativen Kern und zwei Spermakerne, die meist an der der Keimpore gegenüberliegenden Seite des Pollenkorns liegen. Die Keimung auf der Narbe beginnt nach 3–5 Minuten. In den Pollenschlauch treten zuerst die beiden Spermakerne ein. Bei Triticum bleibt der vegetative Kern häufig im Pollenkorn, bei Oryza und Zea dagegen folgt er fast immer den Spermakernen. Leere Pollenkörner wurden 30 Minuten nach der Bestäubung beobachtet. Die Keimung verläuft nicht einheitlich; nach 24 Stunden konnten noch Pollenkörner 5 verschiedener Keimungsstadien gefunden werden. Wahrscheinlich werden die Spermakerne während der Keimung passiv durch die Plasmaströmung zum Pollenschlauch bewegt, da sie der Keimpore näher liegen als der vegetative Kern. Der vegetative Kern scheint eng mit dem Zytoplasma verbunden zu sein und liegt von der Keimpore weit entfernt. Vielleicht sind dies die Hauptgründe dafür, daß der vegetative Kern später als die Spermakerne in den Pollenschlauch eintritt. Auf Grund einer früheren Untersuchung des älteren Verfassers wird eine ausführliche Beschreibung der Bewegungen der Kerne während der Pollenbildung gegeben. Das Verhalten der Kerne während der Gametogenese folgt einer bestimmten Richtung, die auf ein autonomes Agens in den Bewegungen der vegetativen und, besonders, der generativen Kerne schließen läßt.
    Notes: Summary 1. Three species of Gramineae were used for obeservations on the behavior of the tube nucleus and sperm nuclei in germinating pollen grains of Triticum aestivum, Oryza officinalis and Zea mays. 2. In general all three species follow the same pattern in the behavior of the three nuclei. 3. Normal pollen grains contain one tube nucleus and two sperm nuclei which usually lie on the side of the grain opposite to the one containing the germ pore. 4. Germination of the pollen grains on the stigma starts after 3–5 minutes. 5. Two sperms enter the pollen tube and the tube nucleus follows. 6. In wheat, the tube nucleus remains frequently in the pollen grain, while it almost always emigrates in Oryza and Zea. 7. Empty pollen grains could be observed in wheat 30 minutes after pollination. 8. Germination of the pollen grains is not uniform. Even after 24 hours we found pollen grains at five different stages of germination. 9. The regular sequence in the movement of male and vegetative nuclei is rarely disturbed. 10. It is likely that male gametes are transported passively by the cytoplasmic stream to the pollen tube during germination, since they lie nearer to the germ pore than to the tube nucleus. 11. It is suggested that autonomous movement of male gametes may act as auxiliary agent in transportation. 12. The tube nucleus seems to be intimately connected with the cytoplasm and is located far from the germ pore. This may be the main reason why the tube nucleus enters the pollen tube later than the sperm nuclei. 13. The movements of the vegetative and generative nuclei during pollen formation are given in detail based on an old investigation by the senior author. 14. The behavior of nuclei during gametogenesis follows a definite course, indicating autonomy in the movements of the vegetative as well as the generative nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00000001
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Some properties of salivary amylases of Adelphocoris suturalis (Miridae), Dolycoris baccarum (Pentatomidae), and several other heteropteran species (1969)
    Springer
    Entomologia experimentalis et applicata 12 (1969), S. 454-466 
    Details
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Einige Eigenschaften der Speichelamylase von Adelphocoris suturalis und Dolycoris baccarum wurden im Reagenzglas studiert und mit denen anderer Heteropterenarten verglichen. Die durch die Wirkung der Speichelamylase von D. baccarum produzierten Stärkehydrolysate vermehrten sich im Verhältnis zur Substratkonzentration bei einer verhältnismäßig niedrigen Konzentration (weniger als 0,67% in der Schlußkonzentration). Diese Vermehrung wurde bei einer Konzentration von etwa 0,67 bis 2,0 unterbrochen, um sich dann wieder stetig, aber langsamer fortzusetzen. Die optimale Temperatur für die Wirkung des Fermentes lag für A. suturalis bei etwa 50° und für D. baccarum bei etwa 40°. Die optimale Wasserstoff-Ionenkonzentration betrug für A. suturalis pH 3,5–4,0 und für D. baccarum pH 6,0. Die Aktivität der Speichelamylase von D. baccarum wurde durch NaCl, KNO3 und andere Verbindungen kaum beeinflußt, während die Speichelamylase von A. suturalis durch NaCl stark und durch KNO3 schwach aktiviert wurde. Es wird vermutet, daß, hinsichtlich des Aktivierungsgrades der Speichelamylase durch Cl- und NO3-, systematisch nahe verwandte Heteropterenarten der gleichen Gruppe angehören.
    Notes: Abstract Some properties of salivary amylases of the adults of Adelphocoris suturalis Jakovlev and Dolycoris baccarum L. were studied in vitro and compared with those of several other heteropteran species. The reducing sugar produced by the action of the salivary amylase of D. baccarum increased in proportion to substrate concentration while the concentration was relatively low (below 0.67% in its final concentration). Its increase stopped at the concentrations from 0.67 to 2.0%, and then it increased again constantly but slowly. The optimum temperature for the action of the enzyme was found to be about 50° (in A. suturalis) and about 40° (in D. baccarum), and the optimal pH was 3.5–4.0 in A. suturalis and 6.0 in D. baccarum. The salivary amylase activity of D. baccarum was scarcely affected by NaCl, KNO3, and other compounds, while the salivary amylase of A. suturalis was strongly activated by NaCl and moderately by KNO3. It seems highly probable that taxonomically related heteropterous insects might well be grouped with respect to the degree of activation of the salivary amylase by Cl- or NO3-.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00338453
    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...