ZIB

1

Digitale Medien

Kinetics of Product Formation and Plasmid Segregation in Recombinant Microbial Populations (1983)

BAILEY, J. E. ; HJORTSO, M. ; LEE, S. B. ; [weitere]

Oxford, UK : Blackwell Publishing Ltd

Annals of the New York Academy of Sciences 413 (1983), S. 0

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1749-6632

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Allgemeine Naturwissenschaft

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1749-6632.1983.tb47879.x

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

2

Digitale Medien

Generation of thermal strains in GRP (1983)

Jones, F. R. ; Mulheron, M. ; Bailey, J. E.

Springer

Journal of materials science 18 (1983), S. 1533-1539

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-4803

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract The temperature dependence of the thermal strains in the longitudinal direction of the transverse ply ε tl th , of 0°/90°/0° epoxy and polyester laminates, has been determined from the thermal variation of the deflection of an unbalanced beam. These results have been compared with those predicted from known values of the linear expansion coefficients,α t andα l. There is good agreement between the experimental and calculated values of thermal strain for the epoxy composite. Good agreement for the polyester laminates can only be obtained when the values ofα t used are those for wet laminates. The large thermal strains previously reported for the polyester laminates can therefore be explained by small quantities of water in the matrix which are not readily removed during post-curing.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01111974

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

3

Digitale Medien

Generation of thermal strains in GRP (1983)

Jones, F. R. ; Mulheron, M. ; Bailey, J. E.

Springer

Journal of materials science 18 (1983), S. 1522-1532

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-4803

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract The temperature dependence of the linear expansion coefficients in the longitudinal (α l) and transverse directions $$(\alpha _{t_1 } and \alpha _{t_2 } )$$ of unidirectional glass fibre laminates and their matrix resins (α m) has been studied. The results for the dry, fully post-cured polyester, epoxy resins and laminates have been found to be consistent with the predictions of the Schapery equations. An anomalous moisture phenomenon, in the form of a peak in theα m (T)/T andα t (T)/Tcurves for the polyester resin and laminates has been observed. A difference between $$\alpha _{t_1 }$$ and $$\alpha _{t_2 }$$ has been observed for partially cured polyester laminates, which is also perturbated in the presence of water. Both these moisture effects, which are not found in the epoxy specimens, are considered to result from a two-phase polyester matrix and the latter to continued curing below the softening point of the resin. These results have a considerable consequence on the magnitude of the thermal strains which develop in polyester composites.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01111973

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

4

Digitale Medien

Microstructural studies of the hydration products of three tricalcium silicate polymorphs (1983)

Stewart, H. R. ; Bailey, J. E.

Springer

Journal of materials science 18 (1983), S. 3686-3694

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-4803

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract Tricalcium silicate (C3S), the major phase of Ordinary Portland Cement (OPC), occurs in several polymorphic forms depending on the amounts and types of impurity ions present. The hydration products of triclinic, trigonal and monoclinic C3S samples have been studied for a comparison with the silicate hydration products of OPC, using TEM and SEM. In the early stages, less than one day, there are distinct differences observed between the products on the surfaces of grains of different crystal structure but later all three appear similar. This suggests a common mechanism of hydration at later times, irrespective of structure, but the influence of the foreign ions in the first few hours is significant.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00540741

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

5

Digitale Medien

The microstructure of the hydration products of tri-calcium aluminate in the presence of gypsum (1983)

Hampson, C. J. ; Bailey, J. E.

Springer

Journal of materials science 18 (1983), S. 402-410

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-4803

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract The hydration of tri-calcium aluminate in the presence of gypsum has been examined by electron optical methods as a function of pH and hydration time. The location of the alumino-sulphate phase has been related to the solubility of aluminate ions from the precursive platelet phase. At pH ∼ 11.5 the alumino-sulphate precipitate is crystalline and precipitates from solution. When first formed it is deficient in calcium and sulphate with respect to ettringite. If the deficiency is too great, transformation to calcium aluminate monosulphate hydrate may occur as an intermediate step before the equilibrium phases are obtained. At a higher pH (∼ 12.5) the fibres of alumino-sulphate are smaller and more rounded. Long tubular fibres similar to those seen in portland cement were not observed. This has been explained as a consequence of using pure tricalcium aluminate, rather than alkali-containing material. The information obtained has been used to predict the effect of some inorganic additives on the phases produced during the setting of portland cement.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00560628

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

6

Digitale Medien

The environmental stress corrosion cracking of glass fibre-reinforced laminates and single E-glass filaments (1983)

Jones, F. R. ; Rock, J. W. ; Bailey, J. E.

Springer

Journal of materials science 18 (1983), S. 1059-1071

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1573-4803

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract The environmental stress corrosion cracking of epoxy/glass fibre crossply, unidirectional coupons and single E-glass filaments have been compared. At initial applied strains 〉 0.15% the resin does not protect the fibres as shown by their equivalent failure times. The failure occurs in the environment and planar fractures occur because of the localized stress in the load bearing plies adjacent to a transverse crack in the 90° ply of the 0°/ 90°/0° coupons. These transverse cracks result from stress corrosion of the glass/resin interface, which leads to a reduction of the transverse cracking strain. At applied strains 〈 0.15% fracture occurs within the unexposed half of the coupons and is thought to be caused by rapid transport of glass corrosion products where they crystallize within the coupon. This phenomenon is also responsible for the progressive transverse cracking that occurs in both the 0° and 90° plies of the unimmersed half of the crossply coupon under zero load.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00551974

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

7

Digitale Medien

Flow cytometric analysis of plasmid heterogeneity in Escherichia coli populations (1983)

Dennis, K. ; Srienc, F. ; Bailey, J. E.

New York, NY [u.a.] : Wiley-Blackwell

Biotechnology and Bioengineering 25 (1983), S. 2485-2490

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 0006-3592

Schlagwort(e): Chemistry ; Biochemistry and Biotechnology

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/bit.260251017

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext