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  • 1
    Call number: 03-N:77
    Keywords: Contact dermatitis ; Drugs / Side effects ; Cosmetics / Toxicology ; Skin tests ; Cosmetics / adverse effects ; Dermatitis medicamentosa ; Dermatitis, Contact ; Dermatologic agents / Adverse effects
    Pages: xiv, 483 p.
    ISBN: 0444902651
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    03-N:77 departmental collection or stack – please contact the library
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  • 2
  • 3
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A closing apparatus of the Dufour gland is described in the formicine ant Formica sanguinea Latreille 1798. Four sets of muscles are involved, two of which directly attach to the slit-like duct. The latter shows a considerable cuticular thickening of its intima at this level. Ultrastructural observations reveal that the muscles are attached to a cuticula by means of intracellular microtubules in the duct cells. These microtubules run parallel to the myofilaments. Together with the increased contact area for muscular attachments they are believed to ensure the accurate muscular mechanism assuring a well-controlled spraying activity of this gland. Opening of the duct is probably achieved by active muscular contractions, while its closure may be achieved by a passive return to the rest position of the thickened cuticular intima.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-069X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird über die natürlich vorkommende und experimentell bedingte Goldafterraupendermatitis berichtet. Bei 45 Personen wurden Epicutanteste durchgeführt, wobei verschiedene Raupenhaarpräparate der ArtEuproctis chrysorrhoea L. verwendet wurden. Die Beobachtungen ergaben, daß die unbehandelten Nesselhaare in etwa 70% der Versuchspersonen bemerkenswerte Hautreaktionen auslösten. Im allgemeinen zeichneten sich die frühmanifesten Reaktionen durch Erythem- und Ödembildung aus und führten im weiteren Verlauf zu erythematösen Papulae oder Vesiculae. Behandlung der Nesselhaare mittels Erhitzung oder Extraktion in physiologische Kochsalzlösung zeigte nur einen teilweisen Verlust ihrer Hautreizwirkung; Erhitzung war in dieser Hinsicht etwas effektiver. Intracutanproben mit einem wäßrigen Extrakt der Nesselhaare führten bei allen Versuchspersonen zu positiven Hautreaktionen. Bei biochemischer Analyse ließ sich im Rohextrakt eine starke esterolytische Enzymaktivität nachweisen. Neben ihrer Hautirritationsfähigkeit zeigten sich die Nesselhaare besonders wirksam in der Erzeugung von Spherozyten sobald sie mit humanen Erythrozytenin vitro gemischt wurden. Die Bedeutung dieses Phänomens wird besprochen. Unsere Befunde und die anderer Autoren weisen darauf hin, daß die Wirkung der Nesselhaare auf die menschliche Haut sowohl auf einem primär toxischen als auch einem mechanischen, traumiterativen Prinzip beruht.
    Notes: Summary A description is given of both naturally occurring and experimentaly produced brown-tail moth caterpillar dermatitis. Epicutaneous test reactions were studied in a group of 45 persons, utilizing different setae preparations obtained fromEuproctis chrysorrhoea L. About 70% of the individuals developed marked reactions upon contact with untreated nettling hairs. The early skin lesions were as a rule erythematous and wheal-like in character (urticarial), gradually becoming more infiltrated and developing into erythematous papules or vesicles. Treatment of the nettling hairs either by heating or saline extraction resulted in a partial loss only of their skin irritating properties; heat treatment being slightly more effective in this respect. Intracutaneous tests with a saline extract of nettling hairs elicited positive skin reactions in all individuals tested. Biochemical analysis of the crude extract revealed the presence of a potent esterolytic enzyme. Apart from their skin irritating action, the nettling hairs were found capable to induce the formation of spherocytes when mixedin vitro with human erythrocytes. The relevance of this phenomenon is discussed. On the basis of our findings and those of others it is suggested that the action of the nettling hairs upon the human skin is dependent both on a toxic and mechanical traumatic principle.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-0622
    Keywords: Group codes ; Algebraic function fields ; Rational points on curves over finite fields ; Algebraic geometric codes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics , Technology
    Notes: Abstract We construct a series of algebraic geometric codes using a class of curves which have many rational points. We obtain codes of lengthq 2 over $$\mathbb{F}$$ q , whereq = 2q 0 2 andq 0 = 2 n , such that dimension + minimal distance ≧q 2 + 1 − q 0 (q − 1). The codes are ideals in the group algebra $$\mathbb{F}$$ q [S], whereS is a Sylow-2-subgroup of orderq 2 of the Suzuki-group of orderq 2 (q 2 + 1)(q − 1). The curves used for construction have in relation to their genera the maximal number of $$\mathbb{F}$$ GF q -rational points. This maximal number is determined by the explicit formulas of Weil and is effectively smaller than the Hasse—Weil bound.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Copenhagen : Munksgaard International Publishers
    ISSN: 1600-0501
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Inadequate bone height in the lateral part of the maxilla forms a contra-indication for implant surgery. This condition can be treated with an internal augmentation of the maxillary sinus floor. This sinus floor elevation, formerly called sinus lifting, consists of a surgical procedure in which a top hinge door in the lateral maxillary sinus wall is prepared and internally rotated to a horizontal position. The new elevated sinus floor, together with the inner maxillary mucosa, will create a space that can be filled with graft material. Sinus lift procedures depend greatly on fragile structures and anatomical variations. The variety of anatomical modalities in shape of the inner aspect of the maxillary sinus defines the surgical approach. Conditions such as sinus floor convolutions, sinus septum, transient mucosa swelling and narrow sinus may form a (usually relative) contra-indication for sinus floor elevation. Absolute contra-indications are maxillary sinus diseases (tumors) and destructive former sinus surgery (like the Caldwell–Luc operation). The lateral sinus wall is usually a thin bone plate, which is easily penetrated with rotating or sharp instruments. The fragile Schneiderian membrane plays an important role for the containment of the bonegraft. The surgical procedure of preparing the trap door and luxating it, together with the preparation of the sinus mucosa, may cause a mucosa tear. Usually, when these perforations are not too large, they will fold together when turning the trap door inward and upward, or they can be glued with a fibrin sealant, or they can be covered with a resorbable membrane. If the perforation is too large, a cortico-spongious block graft can be considered. However, in most cases the sinus floor elevation will be deleted. Perforations may also occur due to irregularities in the sinus floor or even due to immediate contact of sinus mucosa with oral mucosa. Obstruction of the antro-nasal foramen is, due to its high location, not a likely complication, nor is the occurrence of severe haemorrhages since the trap door is in the periphery of the supplying vessels. Apart from these two aspects, a number of anatomical considerations are described in connection with sinus floor elevation.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The purpose of the study was to evaluate a sell-administered questionnaire on hand dermatitis than was developed to identify persons with hand dermatitis in epidemiological studies. A total of 109 nurses were subject to dermatological examination of the hands within 1 month of returning the questionnaire. 2 types of questionnaire diagnoses were made: a ‘symptom-bused’ diagnosis and a ‘self-reported diagnosis’. These were compared to the medical diagnosis of hand dermatitis. The prevalence of hand dermatitis in the 12 months before the study, based on the medical diagnosis, was 18.3%. The prevalence according to the symptom-based diagnosis and the self-reported diagnosis was 47.7% and 17.4%. respectively. The sensitivity and specificity of the symptom-based diagnosis were 100% and 64%, respectively. It is concluded that the symptom-based diagnosis can be used as screening instrument for the detection of cases in large study populations, if followed by dermatological examination of persons with a positive diagnosis. The sensitivity and specificity of the self-reported diagnosis were 65% and 93%, respectively. It is concluded that the self-reported diagnosis can be used to obtain a rough estimate of the prevalence, although comparison of prevalence figures between study populations may be distorted due to a difference in reporting of hand dermatitis. The results of the study illustrate the size of the differences in prevalence estimates that may arise as a result of differences in the definition and method of diagnosing hand dermatitis.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A study was made of the comparability and reproducibility of the results of measurements of water loss, both in vitro and in vivo, using 4 Servo Med Evaporimeters (3 single–probe and 1 double–probe instrument). The optimum time for recording transepidermal water loss (TEWL) after the initial application of the probe to the skin (in vivo), and the best technique for optimizing the accuracy of measuring TEWL were determined. An evaporation device with a constant level of water loss was constructed for in vitro studies. The volar aspect of the right forearm skin of one subject was used in vivo. Both in vitro and in vivo measurements showed that there were some differences between the results of 4 of the 5 probes. The other probe was distinctly out of range. For all probes, the reproducibility of results of successive measurements was high. Stabilization of TEWL values was reached for all probes from 30–45 s after their initial application to the skin. It is recommended that TEWL be recorded for a further 30–s period, after the initial stabilization (45 s), and that this be taken as the true value. The manufacturer's recommended calibration procedure is based only on adjustments for the standard specified humidities and zero water loss. The importance of incorporating an additional calibration procedure which includes adjustments for an actual standard constant water loss is thus strongly stressed.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 12 (1985), S. 0 
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 179 patients suspected of cosmetic allergy were patch tested with a series of 16 fragrance materials and 9 preservatives. In 67 patients (37.4%), for more of these substances gave positive reactions. In the group of fragrance materials, the largest numbers of positive patch test reactions were seen to isocugenol, oak moss, geraniol, α-amylcinnamic alcohol, and a mixture of α-amylcinnamic aldehyde and α-hexylcinnamic aldehyde.The fragrance mix in the ICDRG standard series detected nearly 80% of cases of contact allergy to fragrance materials other than its constituents. In the group of preservatives, Kathon CG® and quaternium-15 scored the highest number of positive reactions. Its is argued that the commonly used patch test concentrate on of 2% for oak moss and geraniol may be too low to detect all cases of sensitization.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The proaerolysin monomer is conveniently divided into four domains (Fig. la). Domain 1 is a small lobe protruding from a larger lobe containing the other three domains. The larger lobe has an unusual elongated shape, 110 A long and 20-45 A in thickness. The protein is composed of 40% /?-sheet ...
    Type of Medium: Electronic Resource
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