Refine
Year of publication
- 1979 (65) (remove)
Document Type
- Article (39)
- Part of Periodical (11)
- Part of a Book (4)
- Doctoral Thesis (3)
- Book (2)
- Review (2)
- Working Paper (2)
- Conference Proceeding (1)
- Periodical (1)
Is part of the Bibliography
- no (65) (remove)
Keywords
- Frankfurt <Main> / Universität (2)
- Verzeichnis (2)
- Vorlesungsverzeichnis (2)
- 20 β-Activity (1)
- 3,17 β-Hydroxysteroid Dehydrogenase (1)
- Alkylating Agents (1)
- Anthropologie (1)
- Arachnida (1)
- Arnheim (1)
- Coordination Compounds (1)
Institute
- Biochemie und Chemie (7)
- Extern (7)
- Physik (6)
- Universitätsbibliothek (6)
- Geschichtswissenschaften (2)
- Biowissenschaften (1)
- Medizin (1)
- Sportwissenschaften (1)
- Sprachwissenschaften (1)
Aeration in higher plants
(1979)
Si espongono i risultati delle ricerche, riguardo agli scavi alla stratigrafia, la sedimentologia e alla industria litica, nel giacimento di Montemiletto (AV). Si tratta di una frattura beante il cui riempimento è probabilmente avvenuto in un breve arco di tempo e comprende tre momenti principali di sedimentazione: sedimenti fini (argille) nella parte più bassa, grossolani (sabbie) nella parte mediana e ancora fini (limi) in quella alta. L'industria litica, raccolta in tutti i livelli, e omogenea nell'intera serie, è riferita ad un Musteriano a denticolati, caratterizzato da una scarsa varietà di tipi; in genere su scheggia piatta; di tecnica debolmente levallois.
Il lupo e la volpe nel pozzo : racconto e ideologia dal Roman de Renart al Renart le Contrefait
(1979)
Hirschzungenfarn (Phyllitis scolopendrium) am Hüggel (Gemeinde Hasbergen, Landkreis Osnabrück)
(1979)
Phyllitis scolopendrium (L.) NEWM. wird zwar in der "Roten Liste"
der Gefäßpflanzen in der Bundesrepublik Deutschland (KORNECK &
LOHMEYER & SUKOPP & TRAUTMANN 1977 - Liste der in der Bundesrepublik
Deutschland und Berlin (West) verschollenen und gefährdeten
Farn- und Blütenpflanzen) nicht aufgeführt, jedoch ist dieses auf das
geographische Verbreitungsschwergewicht dieser Sippe zurückzuführen.
A specific class of DNA sequences, the inverted repetitive sequences, forms a double-stranded structure within a single linear polynucleotide chain in denatured DNA. The reassociation process is unimolecular and occurs very fast. Quantitative analyses have shown that these sequences com-E rise about 4-5% of the nuclear DNA of various mammalian cells (P815 mouse mastocytoma, Hela, L cells, Raji and Chang cells, and human embryonic hepatocytes) and are interspersed within sequences of other degrees of repetitiveness.
After labeling the cells with L-[Metnyl-3H]methionine and [14C]deoxycytidine, relative rates of enzymic DNA methylation were computed on the basis of 3H and 14C radioactivities found in py rimidine residues of the nuclear DNA. The results indicate that DNA of inverted repetitive sequences is methylated to a level about 50% higher than the ordinary repetitive sequences and to about 300% higher than the unique and intermediary sequences.
The biological function of the inverted repeats as well as the role of their enzymic hypermethyl ation is unknown.
The sequence complexity of nuclear RNA from mouse liver, mouse spleen and highly malignant P815 mastocytoma was measured by nRNA driven hybridization to unique DNA sequences of P815 cells. The unique DNA sequences represent 63% of the total nuclear DNA of P815 cells and their availibility in hybridization experiments was found to be 76%. Of these sequences 7.8% formed hybrids with nuclear RNA of this cell, about 11.5% with mouse spleen and about 14.5% with mouse liver nuclear RNA. Assuming an asymmetrical transcription, the complexities of these transcripts are 2.8 × 108 nucleotides for mouse P815 mastocytoma, 4.3 × 108 for mouse spleen and about 5.3 × 108 nucleotides for mouse liver.
Cellular specifity of the transcribed information was analyzed in additivity experiments, in which unique DNA sequences, not complementary to the nuclear RNA of one cell were annealed to the nuclear RNAs of the two other tissues/cells. In these experiments most of the nuclear RNA se quences of P815 cells were found to be also present in the nucleus of mouse liver and spleen. Only a small portion of the unique DNA sequences of P815 mastocytoma (about 1.2% corresponding to 4.4 ×107 nucleotides) was found to be complementary only to P815 mastocytoma nuclear RNA.
Sesame, Sesamum indicum L. (syn.S. orientale L.) belongs to family Pedaliaceae and is perhaps the oldest oilseed crop known to man. It is an annual, maturing in 70 to 140 days, but usually in 105 days or less, and contains 45-60% oil in its small, flat, oblong seeds which, may be white, brown or black.
L'Autore esamina le specie di Scafopodi del Neogene del Bacino del Mediterraneo, dandone un'ampia iconografia. Vengono riassunte varie notizie relative alle differenti specie ed in particolar modo viene proposta una rilettura filologicamente corretta delle diagnosi originarie. Due nuove specie sono istituite: Fustiaria (Fllstiaria) emersoni e Cadulus (Gadila) razzorei, dal Pliocene italiano. Anche le specie attuali mediterranee sono esaminate e correlate, ove occorra, alle forme fossili.