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  • 1
    Electronic Resource
    Electronic Resource
    Interference in the radiation of two relativistic charges (1988)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 29 (1988), S. 1356-1360 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The radiation produced by two interacting relativistic point charges is considered. Under an appropriate approximation the radiation of the system as a whole (interference effects included) is expressed as a function of the relative velocity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.527928
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  • 2
    Electronic Resource
    Electronic Resource
    Properties and Potential Applications of Arginase Immobilized by Radiation-induced Polymerization of Acrylic Monomers (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 542 (1988), 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.1749-6632.1988.tb25815.x
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  • 3
    Electronic Resource
    Electronic Resource
    Male and Female Effects on the In Vitro Production of Bovine Embryos (2004)
    Berlin, Germany : Blackwell Verlag
    Anatomia, histologia, embryologia 33 (2004), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A 3-year study was carried out to evaluate male and female effects on the efficiency of an in vitro fertilization (IVF) programme. The semen of different bulls used for artificial insemination was tested for the in vitro production of transferable blastocysts. The fertilization capacity was recorded for each bull. Bovine oocytes were matured in vitro, fertilized with frozen/thawed semen of 63 individual bulls and cultured during 8 days. The semen of one bull was used as control. The percentage of cleavage (36.3–93.4%) and blastocysts on day 7 (6.9–51.2%) varied from bull to bull. Despite high variability, blastocysts were produced with the semen of all bulls in the first trial. Moreover, oocytes fertilized with 85% of tested bulls reached a blastocyst rate not different to the control bull. The correlation coefficients of six bulls showed no significant male effect but an influence of oocytes on the cleavage rate (F-value 0.38, P 〉 0.05, and 12.4, P 〈 0.001, respectively). The development to blastocysts on day 7 was significantly influenced by sperms and also oocytes and session (P 〈 0.01), but no combined interaction was observed between female and male. It is concluded that transferable embryos can be produced in vitro in the first trial with frozen/thawed semen of 63 tested bulls. The results show different capacities of bulls to produce embryos and high male and female effects on the efficiency of an IVF programme.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.2004.00543.x
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  • 4
    Electronic Resource
    Electronic Resource
    Developmental Capacity In Vitro of Prepubertal Oocytes (2001)
    Oxford UK : Blackwell Science Ltd.
    Anatomia, histologia, embryologia 30 (2001), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A 2-year comparative study was carried out to evaluate the effect of ovary size, follicle size and oocyte quality of 3-month-old Simmental calves and the efficiency of using calf ovaries in an in vitro fertilization (IVF) programme. We evaluated the effects of different concentrations of follicle-stimulating hormone (FSH) and oestradiol-17β (E-17β) in the maturation medium on the in vitro development of calf oocytes into morula and blastocysts. The proportion of recovered oocytes (62.1%; 42.8%; 25.3%) and the percentage of good quality cumulus oocyte complexes (84.2%; 59.8%; 45.9%) decreased significantly (P 〈 0.01) with decreasing ovary size (L, M and S). The rates of two or more cells on Day 2 and of blastocysts on Day 7 and Day 9 were significantly lower (P 〈 0.01) for calf oocytes (61.5%; 18.9%; 15.9%) compared with those from sexually matured females (70.1%; 32.3%; 22.2%). Calf oocytes, matured in medium supplemented with 20 μg/ml or 10 μg/ml FSH plus 2 μg/ml E-17β had higher rates of cleavage on Day 2 (64.1% and 64.7%) and blastocysts on Day 7 (24.5% and 22.4%) than the control supplemented with 10 μg/ml FSH (55.6% and 19.2%, respectively). Groups supplemented with 20 μg/ml FSH plus 2 μg/ml E-17β and 10 mg/ml plus 4 mg/ml E-17β showed a significantly lower developmental rate of blastocysts on Day 7 (14.6% and 14.5%). High concentrations of E-17β (4 μg/ml) resulted in a significantly lower development of blastocysts on Day 9 (8.1%) and hatched blastocysts on Day 13 (3.5%) (P 〈 0.01). We conclude that the proportion of calf oocytes obtained from immature animals and their suitability for IVF are lower than those of cows. Thus, the use of oocytes from sexually immature females would decrease the relative efficiency of IVF programmes. Supplementation with high concentrations of FSH can improve the maturation and developmental capacity of oocytes from prepubertal calves.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0264.2001.00324.x
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  • 5
    Electronic Resource
    Electronic Resource
    Functional Morphology of the Zona Pellucida (2001)
    Oxford UK : Blackwell Science Ltd.
    Anatomia, histologia, embryologia 30 (2001), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The zona pellucida (ZP) is an extracellular matrix surrounding the oocyte and the early embryo that exerts several important functions during fertilization and early embryonic development. The ZP of most mammalian species is composed of three major glycoproteins that show considerable heterogeneity due to extensive post-translational modifications. Sodium dodecyl sulphate polyacrylamide gel electrophoresis of the ZP reveals three to four glycoproteins which have been nominated ZP1, ZP2, ZP3 and ZP4. As cloning and characterization of the ZP genes of a variety of mammalian species including domestic animals show a high homology, three classes of ZP genes, ZPA, ZPB and ZPC can be discerned. The corresponding proteins were named ZPA, ZPB and ZPC. Whereas in the mouse ZPB is the primary sperm receptor, the situation is more complicated in other species. For instance, in the pig ZPA has been shown to possess receptor activity. Interaction between gametes during fertilization is at least in part regulated by carbohydrate moieties of the ZP and carbohydrate-binding proteins of the sperm surface. In domestic animals zona proteins are expressed in both the oocyte and granulosa cells in a stage-specific pattern and may play a role in granulosa cell differentiation. The role of ZP glycoproteins in immunocontraception is briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0264.2001.00337.x
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  • 6
    Electronic Resource
    Electronic Resource
    Effects of Growth Hormone on Female Reproductive Organs (2001)
    Oxford UK : Blackwell Science Ltd.
    Anatomia, histologia, embryologia 30 (2001), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: During the last decade many experiments have been performed to study the effects of growth hormone (GH, somatotropin) on reproductive functions. Most of the studies found only slight or no effects of GH treatment, both on the oestrous cycle and on gonadotropin, progesterone, or oestrogen serum levels. In GH-treated animals, elevated levels of insulin-like growth factor I and GH in the serum could be correlated with an increased number of small (〈5 mm in diameter) ovarian follicles, possibly as a consequence of a reduction of apoptosis and follicular atresia. There is still controversy over the effects of GH on in vivo and in vitro embryo production and on the gestation period. Recent studies produced some evidence that GH-receptor is expressed in ovarian tissue, implying a direct role for GH in the ovary.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0264.2001.00336.x
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  • 7
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    Osservazioni sul testo siciliano del secolo XIV "Il libro dei vizi e delle virtù" (1932)
    Milano : Periodicals Archive Online (PAO)
    Aevum. 6:1 (1932:genn./mar.) 205 
    Details
    ISSN: 0001-9593
    Topics: Linguistics and Literary Studies , History
    Notes: Notiziario
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4009-1932-006-01-000022
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  • 8
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    I codici sciclitani (1932)
    Milano : Periodicals Archive Online (PAO)
    Aevum. 6:4 (1932:ott./dic.) 691 
    Details
    ISSN: 0001-9593
    Topics: Linguistics and Literary Studies , History
    Notes: Notiziario
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4009-1932-006-04-000026
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  • 9
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    CARMELINA NASELLI, "Studi di letteratura antica siciliana" con due facsimili (Book Review) (1936)
    Milano : Periodicals Archive Online (PAO)
    Aevum. 10:2/3 (1936:apr./sett.) 403 
    Details
    ISSN: 0001-9593
    Topics: Linguistics and Literary Studies , History
    Notes: Recensioni
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4009-1936-010-02-000013
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  • 10
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    D'un poeta siciliano e della data d'una sua poesia (1941)
    Milano : Periodicals Archive Online (PAO)
    Aevum. 15:4 (1941:ott./dic.) 503 
    Details
    ISSN: 0001-9593
    Topics: Linguistics and Literary Studies , History
    Notes: Comunicazioni
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4009-1941-015-04-000010
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