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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 157 (1998), S. 943-946 
    ISSN: 1432-1076
    Keywords: Key words Congenital ; Lymphoedema ; External genitalia ; Male ; Paediatric
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Isolated congenital lymphoedema of the external genitalia in boys is extremely rare. It can have major physical and emotional consequences for the children. Three male patients with primary lymphoedema of the penis and scrotum are described. The first case presented with lymphoedema of the prepuce and the phallic skin that persisted after the age of 1 year. Circumcision and excision of the subcutaneous tissues of the phallic skin were successful in producing the appearance of a normal circumcised penis. The second case presented with oedema of both phallic and scrotal skin. At age 1 year only a pastous thickening of the prepuce remained, scrotal and phallic skin normalised spontaneously. Routine circumcision was successful with a 5-year follow up. The third case presented with persistent oedema of both the scrotum and the phallus. He suffered leakage of lymph requiring incontinence pads, with complicating skin infections recurring every 4–6 weeks at age 8 years. After complete peeling of the scrotal and phallic skin from subcutaneous tissue some leakage persisted, infections subsided. The cause of this disorder remains unknown, although hypoplasia of the lymphatic vessels is reported in most cases. In the literature, several congenital malformations have been associated with primary lymphoedema. These were not noted in our patients. Rarely, the lymphoedema regresses spontaneously. The treatment of persistent lymphoedema is surgical and consists of meticulous excision of all subcutaneous layers of the affected skin, combined with reconstruction of the penis and/or scrotum. Conclusion Primary lymphoedema of the male external genitalia is an extremely rare malformation of the lymphatic vessels of unknown origin. If persistent, surgical treatment is necessary.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 398-399 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Early experiments confirmed Creek's findings of poor growth and the faecal fat3 was as high as 20 per cent of fat intake in the wheat germ groups. When gluten was given as a substitute for the corn in the diet, however, we found that the birds fed gluten grew slightly better than controls (P 〈 ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Medicine 9 (1958), S. 47-68 
    ISSN: 0066-4219
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 3316-3325 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The efficiency of second-harmonic generation at 425 nm has been measured in periodically segmented waveguides in undoped and 120 ppm Sc3+-doped c-axis-oriented KTiOPO4 (KTP) plates. Conversion efficiencies up to 200% and 325%/W cm2 are obtained for the two types of crystals. These efficiencies are found to have decreased by up to a factor of 2 after the generation of 2–4 mW of cw blue output power for more than 5 min, while the transmission of the pump beam is decreased by about 20%. These effects are semipermanent in undoped KTP, and are therefore ascribed to optical damage. A full recovery within a few minutes is, however, found in the Sc3+-doped KTP waveguides. The ionic conductivity along the polar axis of 120 ppm Sc3+-doped KTP has been measured to be about equal to that of undoped KTP, so that the difference in the optical damage characteristics of the waveguides is not caused by a difference in the conductivity of the substrate KTP. The conductivity of 230 ppm doped crystals is found to be about a factor of 30 lower than that of undoped KTP, and has a different dependence on current frequency. In these crystals domain inversion in the exchanged waveguide segments was not obtained.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 25 (1992), S. 274-280 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: X-ray diffraction studies are made on ion-conducting potassium titanyl phosphate (KTP) crystals with in situ DC electric field along different crystallographic directions. The X-ray rocking curves recorded with an electric field along the polar b axis (which is the direction of ion conduction) show a strong enhancement of the 040 reflection intensity (reflecting planes normal to the b axis) whereas the h0l reflections (reflecting planes parallel to the polar axis) do not show any intensity change. For an electric field normal to the polar axis no intensity change, either in 040 or in h0l reflections, occurs. This observation is supplemented by X-ray topography. The 040 X-ray topographs recorded with in situ electric field along b exhibit strong extinction contrast in the form of striations parallel to the polar (ion-conduction) axis. The 040 intensity increase and the striation contrast are attributed to lattice deformation by the space-charge polarization due to the movement of the K+ ions under the influence of the electric field.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 26 (1993), S. 431-437 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: A periodic bond-chain (PBC) analysis has been made of the structure of β-BaB2O4 (BBO) and related to crystal growth conditions, in order to explain the sometimes tangerine-shaped, sometimes needle shaped crystals that are observed when BBO is grown experimentally. The periodic bond chains generate eight-connected nets in BBO. The order of morphological importance (MI) of these F faces is determined by comparing the nearest-neighbour interaction ionic bond energies. The results are compared with experimental data. Six faces, sometimes observed parallel to the c axis of BBO, were identified as the hexagonal prism {11{\bar 2}0}. Two other forms are either the trigonal pyramids {01{\bar 1}2} and {01{\bar 1}{\bar 2}} or the trigonal pyramids {10{\bar 1}2} and {01{\bar 1}{\bar 2}}. {0001} is an important cleavage plane. The tangerine habit is a result of the strong temperature gradient, which is often used when growing BBO. The isotherms of the furnace impose their habit on the growing crystal.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 13 (1968), S. 157-167 
    ISSN: 1573-2568
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This study was initiated to evaluate the effect on contractility of the longitudinal and circular muscles of the canine gastric body and antrum when micellar fat or bile was instilled in a Thiry loop of duodenum. These studies were performed while the animals were stimulated by food, acetylcholine, and 5-hydroxytryptophane (5-HTP). The latter two chemicals were infused for a 30-min. period. Micellar fat in the duodenum tended to decrease the frequency and amplitude of contractions only in those experiments using 5-HTP or the lower dose of acetylcholine (50 µg./kg./min.) as stimulants. This trend was not seen when bile alone or saline was placed in the duodenal loop. The data were evaluated by a motility index technic and analyzed by a paired comparison method.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Digestive diseases and sciences 13 (1968), S. 147-156 
    ISSN: 1573-2568
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This study was initiated to evaluate gastric motility with the use of extraluminal force transducers in unanesthetized dogs. The contractile activity of the circular and longitudinal muscle in both antrum and body of the canine stomach was monitored in the interdigestive state and under the influence of food, acetylcholine, and 5-hydroxytryptophane. The latter two chemicals were infused for a 30-min. period. Each of the two muscle layers in antrum and body had a maximum frequency of 5 contractions per minute. This activity was continuous during 30 min. only under the influence of food and 5-hydroxytryptophane. Acetylcholine stimulant effects did not persist beyond the initial 10 min. of infusion. Amplitude of contractions under spontaneous or induced activity varied. The height of these contractions were circular antrum 〉 longitudinal antrum 〉 circular body 〉 longitudinal body. This method of recording muscle contractility is believed to be useful for quantitatively assaying gastric activity without compromise of physiologic environment.
    Type of Medium: Electronic Resource
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