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  1. Article: LYSOGENY OF BACTERIUM ANITRATUM.

    Papavassiliou, J

    Journal of bacteriology

    2006  Volume 80, Issue 1, Page(s) 138–139

    Language English
    Publishing date 2006-01-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2968-3
    ISSN 1098-5530 ; 0021-9193
    ISSN (online) 1098-5530
    ISSN 0021-9193
    DOI 10.1128/jb.80.1.138-139.1960
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Singular lensing from the scattering on special space-time defects.

    Mavromatos, Nick E / Papavassiliou, Joannis

    The European physical journal. C, Particles and fields

    2018  Volume 78, Issue 1, Page(s) 68

    Abstract: It is well known that certain special classes of self-gravitating point-like defects, such as global (non gauged) monopoles, give rise to non-asymptotically flat space-times characterized by solid angle deficits, whose size depends on the details of the ... ...

    Abstract It is well known that certain special classes of self-gravitating point-like defects, such as global (non gauged) monopoles, give rise to non-asymptotically flat space-times characterized by solid angle deficits, whose size depends on the details of the underlying microscopic models. The scattering of electrically neutral particles on such space-times is described by amplitudes that exhibit resonant behaviour when thescattering and deficit angles coincide. This, in turn, leads to ring-like structures where the cross sections are formally divergent ("singular lensing"). In this work, we revisit this particular phenomenon, with the twofold purpose of placing it in a contemporary and more general context, in view of renewed interest in the theory and general phenomenology of such defects, and, more importantly, of addressing certain subtleties that appear in the particular computation that leads to the aforementioned effect. In particular, by adopting a specific regularization procedure for the formally infinite Legendre series encountered, we manage to ensure the recovery of the Minkowski space-time, and thus the disappearance of the lensing phenomenon, in the no-defect limit, and the validity of the optical theorem for the elastic total cross section. In addition, the singular nature of the phenomenon is confirmed by means of an alternative calculation, which, unlike the original approach, makes no use of the generating function of the Legendre polynomials, but rather exploits the asymptotic properties of the Fresnel integrals.
    Language English
    Publishing date 2018-01-24
    Publishing country France
    Document type Journal Article
    ZDB-ID 1459069-4
    ISSN 1434-6052 ; 1434-6044
    ISSN (online) 1434-6052
    ISSN 1434-6044
    DOI 10.1140/epjc/s10052-018-5542-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: AEROBACTER (ENTEROBACTER) CLOACAE IN HUMAN AND ANIMAL FECES.

    PAPAVASSILIOU, J

    Journal of bacteriology

    2003  Volume 85, Page(s) 1176–1177

    MeSH term(s) Animals ; Enterobacter ; Enterobacter cloacae ; Escherichia ; Escherichia coli ; Feces ; Guinea Pigs ; Humans ; Klebsiella ; Mice ; Rabbits ; Rats ; Research
    Language English
    Publishing date 2003-08-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2968-3
    ISSN 1098-5530 ; 0021-9193
    ISSN (online) 1098-5530
    ISSN 0021-9193
    DOI 10.1128/jb.85.5.1176-1177.1963
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  4. Article: Preparation and lyophilization of colicine suspensions. II. Lyophilization and storage of colicines.

    PAPAVASSILIOU, J

    Pathologia et microbiologia

    2003  Volume 26, Page(s) 84–88

    MeSH term(s) Anti-Bacterial Agents ; Antibiotics, Antitubercular ; Colicins ; Dermatologic Agents ; Escherichia coli ; Freeze Drying ; Suspensions
    Chemical Substances Anti-Bacterial Agents ; Antibiotics, Antitubercular ; Colicins ; Dermatologic Agents ; Suspensions
    Language English
    Publishing date 2003-10-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 200190-1
    ISSN 0031-2959
    ISSN 0031-2959
    DOI 10.1159/000161356
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  5. Article: Species differentiation of group D streptococci.

    PAPAVASSILIOU, J

    Applied microbiology

    2003  Volume 10, Page(s) 65–69

    Abstract: Three hundred and fourteen strains of group D streptococci were studied by means of a number of tests. The majority of the strains were identified as Streptococcus faecalis (83 strains), Streptococcus faecium (131 strains), or Streptococcus bovis (32 ... ...

    Abstract Three hundred and fourteen strains of group D streptococci were studied by means of a number of tests. The majority of the strains were identified as Streptococcus faecalis (83 strains), Streptococcus faecium (131 strains), or Streptococcus bovis (32 strains). Several strains (47 or nearly 15%) either shared characteristics of two species or were completely atypical. S. faecalis and S. bovis were more easily identified than S. faecium, which is not sharply defined from the other species and could be subdivided into several fermentative types on the basis of fermentation of arabinose, mannitol, sorbitol, glycerol, and sucrose. The value of some characteristics in species identification is discussed. Growth in the presence of potassium tellurite 1:2,500 and in the presence of 6.5% NaCl and fermentation of arabinose, glycerol, and raffinose are very important tests for the identification of the three species. The reduction of tetrazolium salts, the reduction of litmus milk, and the fermentation of sorbitol may serve as complementary tests for the same purpose. For the differentiation of these three species the "pattern of reactions" is more important than single tests.
    MeSH term(s) Enterococcus faecalis ; Fermentation ; Glycerol ; Raffinose ; Sodium Chloride ; Streptococcus ; Streptococcus bovis ; Tetrazolium Salts
    Chemical Substances Tetrazolium Salts ; Sodium Chloride (451W47IQ8X) ; Raffinose (N5O3QU595M) ; Glycerol (PDC6A3C0OX)
    Language English
    Publishing date 2003-08-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 207801-6
    ISSN 0003-6919
    ISSN 0003-6919
    DOI 10.1128/am.10.1.65-69.1962
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: COLICINOGENIC ENTEROBACTERIA IN HUMAN AND ANIMAL FAECES.

    PAPAVASSILIOU, J

    Zeitschrift fur Hygiene und Infektionskrankheiten; medizinische Mikrobiologie, Immunologie und Virologie

    2003  Volume 149, Page(s) 164–169

    MeSH term(s) Animals ; Anti-Bacterial Agents ; Antibiotics, Antitubercular ; Culture Media ; Enterobacteriaceae ; Escherichia coli ; Feces ; Humans ; Research
    Chemical Substances Anti-Bacterial Agents ; Antibiotics, Antitubercular ; Culture Media
    Language English
    Publishing date 2003-10-03
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 202912-1
    ISSN 0340-1782
    ISSN 0340-1782
    DOI 10.1007/bf02153121
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  7. Article: Preservation of colicinogeny and sensitivity to colicines in egg medium or by lyophilization.

    PAPAVASSILIOU, J

    Pathologia et microbiologia

    2003  Volume 25, Page(s) 144–152

    MeSH term(s) Anti-Bacterial Agents ; Antibiotics, Antitubercular ; Cold Temperature ; Colicins ; Culture Media ; Escherichia/ethnology ; Escherichia coli/ethnology ; Freeze Drying ; Preservation, Biological ; Shigella/ethnology
    Chemical Substances Anti-Bacterial Agents ; Antibiotics, Antitubercular ; Colicins ; Culture Media
    Language English
    Publishing date 2003-10-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 200190-1
    ISSN 0031-2959
    ISSN 0031-2959
    DOI 10.1159/000161269
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  8. Article: Preparation and lyophilization of colicine suspensions. I. Production of colicines in liquid nutrient media.

    PAPAVASSILIOU, J

    Pathologia et microbiologia

    2003  Volume 26, Page(s) 74–83

    MeSH term(s) Anti-Bacterial Agents ; Antibiotics, Antitubercular ; Colicins ; Dermatologic Agents ; Escherichia coli ; Food ; Freeze Drying ; Suspensions
    Chemical Substances Anti-Bacterial Agents ; Antibiotics, Antitubercular ; Colicins ; Dermatologic Agents ; Suspensions
    Language English
    Publishing date 2003-10-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 200190-1
    ISSN 0031-2959
    ISSN 0031-2959
    DOI 10.1159/000161355
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  9. Article ; Online: The pinch technique at two loops

    Papavassiliou

    Physical review letters

    2000  Volume 84, Issue 13, Page(s) 2782–2785

    Abstract: It is shown that the fundamental properties of gauge independence, gauge invariance, unitarity, and analyticity of the S matrix lead to the unambiguous generalization of the pinch technique algorithm to two loops. ...

    Abstract It is shown that the fundamental properties of gauge independence, gauge invariance, unitarity, and analyticity of the S matrix lead to the unambiguous generalization of the pinch technique algorithm to two loops.
    Language English
    Publishing date 2000-03-27
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.84.2782
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  10. Article: Connection between the pinch technique and the background field method.

    Papavassiliou

    Physical review. D, Particles and fields

    1995  Volume 51, Issue 2, Page(s) 856–861

    Language English
    Publishing date 1995-01-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209772-2
    ISSN 0556-2821 ; 2470-0010 ; 1550-7998
    ISSN 0556-2821 ; 2470-0010 ; 1550-7998
    DOI 10.1103/physrevd.51.856
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