Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1990-1994  (4)
  • 1
    ISSN: 1434-4726
    Keywords: Sigmoid sinus ; Computed tomography ; Chronic otitis media ; Mastoid pneumatization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Whether or not the shape and size of the sigmoid sinus are affected by middle ear inflammation is still controversial. Using high-resolution computed tomography (CT), we examined the shape and cross-sectional area of the sigmoid sinus in 80 patients with unilateral chronic otitis media. Forty patients had right otitis media, and the others left otitis media. Whether chronic inflammation involved the right or left ear, a protrusive type of sigmoid sinus was found more frequently on the right than the left, while the cross-sectional area was significantly greater on the right. These findings suggest that a side difference affecting the sigmoid sinus would thus appear not to be caused by postnatal otitis media, but to originate in fetal life. The shape of the sigmoid sinus greatly varies among individuals and according to whether it is on the right or the left. Findings also indicate that a temporal bone CT is desirable to optimize surgical safety.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A 35-year-old woman had had pruritic linearly arranged papules on the right side of her forehead for 17 years. A biopsy specimen from one of the papules showed the histopathological appearance of an intradermal plexiform neurilemmoma. No other features of systemic neurofibromatosis or neurilemmomatosis were detected. Neurilemmoma usually occurs as a solitary lesion in the subcutis and there are only few reports of such localized multiple intradermal neurilemmomas associated with neither neurofibromatosis nor neurilemmomatosis.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 3 (1991), S. 1052-1058 
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The stabilization of low-frequency density fluctuations is evidenced in the Nagoya Bumpy Torus (NBT-1M) [Plasma Physics and Controlled Nuclear Fusion Research (IAEA, Vienna, 1985), Vol. 2, p. 551] in the presence of microwave-heated hot-electron rings. Flute-type fluctuations, which are considered to be stabilized by the charge-uncovering effect of the rings, are found to cause large plasma losses, and to affect radial density profiles in the way that the lower fluctuation level yields the steeper density gradient. The particle confinement is, therefore, improved by the hot-electron rings to some extent, but is mainly determined by the plasma convection, which is expected from the discrepancy between density and potential profiles. It is also found that fluctuations in a toroidal plasma inside the ring grow when a weak negative ambipolar potential and a steep density gradient are formed, and are reduced to a low level when a deep potential well is achieved.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The higher reactivity and density of thermodynamically non-equilibrium high-temperature plasmas than that of glow-discharge plasmas are confirmed by the observation of atomic oxygen concentration and the population densities of the O(3P), O(1D), and O(1S) energy states. At 60 cm from the plasma exit, the downstream flow mainly consisted of the O(1D) state. This flow is about 95% O(1D) at 1000 W and the fraction of O(1D) state slightly decreases with increasing power due to the production of O+ ions. The flow is about 55% 0(1D) for 200-W glow-discharge plasmas, which also give a low atomic oxygen concentration.〈lz〉
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...