Mobile/personal terminals for COMETS advanced mobile satellite communication experiment

Takeuchi, Makoto; Hase, Yoshihiro; Ohuchi, Chiharu; Mineno, Hitoshi; Nishida, Masami; Saito, Haruo; Obara, Noriaki; Nishigaki, T.

doi:10.1109/icupc.1995.497072

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…Of the four human cases previously reported (Meisel et al, 1976;Nime et al, 1976;Lasser et al, 1979;Takeuchi, 1979) all occurred in individuals whose immune system was either developing, suppressed or deficient; all had severe diarrhoea, as in this case (Bryceson et af. in press) and in the two other cases recently diagnosed in this country.…”

Section: Discussionsupporting

confidence: 50%

Cryptosporidiosis in man: Parasite life cycle and fine structural pathology

Bird

Smith

1980

The Journal of Pathology

109

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BRITISH MEDICAL JOURNAL VOLUME 285 3 juLY 1982 23 inflamed mucosa with no parasites. Sections from the mucosa of ileum and caecum and the rectal biopsy specimen, trypsinised and stained with antisera to immunoglobulins, kappa and lambda chains, and IgA secretor piece, using the immunoperoxidase method, showed similar numbers and distributions of positive lymphocytes to those in normal controls. Peripheral lympho-cyte subpopulations showed normal T-and B-cell proportions with a normal distribution of surface immunoglobulin classes on B cells. T-cell transformation was normal after stimulation by phytohaemagglutinin. Serum M~~~~ Caecal epithelial microvillar surface showing cryptosporidium schizont containing merozoites. X 18 000 (original magnification). IgG concentrations and complement components C3 and C4 were normal, serum IgA was low (400 mg/l; normal 860-3700 mg/l), IgM low (510 mg/l; normal, 700-3700 mg/l), and IgE raised (205 U/ml using paper radio-immunosorbent test; normal adult mean 122 U/ml). Comment The ultrastructure of these organisms was sufficiently distinctive for a diagnosis to be made on morphology alone, and in our case the inflammation within the ileal and caecal mucosa was probably due to the organism. The patient's immune state, with marginally decreased concentrations of serum IgA and IgM, though not fulfilling any of the recognised criteria for general or selective immune deficiency, suggests an element of unexplained immune paresis. The virus-like particles found in the nucleus and cytoplasm of mucosal epithelial cells by Bird and Smith5 were not found in our case. Increased awareness of cryptosporidial enterocolitis may increase the frequency of detection of such cases. We thank Mr J B Self for clinical information; Dr D S Ridley, Hospital for Tropical Diseases, London, for help in the initial diagnosis; Dr H Sewell, Mr A Willox, and the immunopathology department Leicester Royal Infirmary; and Mrs G Holmes for typing the manuscript. Meisel JL, Perera DR, Meligro C, Rubin CE. Overwhelming watery diarrhoea associated with a cryptosporidium in an immunosuppressed patient. Gastroenterology 1976 ;70 :1156-60. 2 Lasser KH, Lewin KJ, Ryning FW. Cryptosporidial enteritis in a patient with congenital hypogammaglobulinaemia. Hum Pathol 1979 ;1O :234-40. 3Nime FA, Burek DJ, Page DL, Holscher MA, Yardley JH. Acute entero-colitis in a human being infected with protozoan cryptosporidium. Gastroenterology 1976;70 :592-8. 4 Royal College of Physicians of London. Immunodeficiency and crypto-sporidiosis. Leicester Royal Infirmary, Leicester LE2 7LX A FLETCHER, MB, cHB, lecturer and honorary senior registrar, department of pathology T A SIMS, FIMLS, chief medical laboratory scientific officer, department of electron microscopy I C TALBOT, MD, MRCPATH, senior lecturer and honorary consultant pathologist, department of pathology Frequency of swallowing in duodenal ulceration and hiatus hernia There is wide individual variation in the rate of spontaneous swallowing. In the absence of food up to 5 ml of air...

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Section: Discussionsupporting

confidence: 50%

Cryptosporidiosis in man: Parasite life cycle and fine structural pathology

Bird

Smith

1980

The Journal of Pathology

109

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“…Here it may be that short-length-scale evanescent waves associated with the field enhancement feature may dramatically improve the spatial resolution [66]. These evanescent waves are commonly encountered at the boundary between two different waveguides [67,68].…”

Section: Evanescence and Microwave Microscopymentioning

confidence: 99%

“…However, techniques of field enhancement can improve the spatial resolution to much smaller values without compromising the signal-to-noise. Here it may be that short-length-scale evanescent waves associated with the field enhancement feature may dramatically improve the spatial resolution [66]. These evanescent waves are commonly encountered at the boundary between two different waveguides [67,68].…”

Section: Evanescence and Microwave Microscopymentioning

confidence: 99%

Near-Field Microwave Microscopy of Materials Properties

Anlage

Steinhauer

Feenstra

et al. 2001

Microwave Superconductivity

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Abstract. Near-field microwave microscopy has created the opportunity for a new class of electrodynamics experiments of materials. Freed from the constraints of traditional microwave optics, experiments can be carried out at high spatial resolution over a broad frequency range. In addition, the measurements can be done quantitatively so that images of microwave materials properties can be created. We review the five major types of nearfield microwave microscopes and discuss our own form of microscopy in detail. Quantitative images of microwave sheet resistance, dielectric constant, and dielectric tunability are presented and discussed. Future prospects for near-field measurements of microwave electrodynamic properties are also presented.

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“…C. testosteroni has both membrane-bound nitrate reductase (Nar) and periplasmic nitrate reductase (Nap), while K. pneumoniae has only Nar [30]. The estuary and the sample sites used have been described in [27].…”

Section: Bacterial Isolatesmentioning

confidence: 99%

Use of chlorate as a selective inhibitor to distinguish membrane-bound nitrate reductase (Nar) and periplasmic nitrate reductase (Nap) of dissimilative nitrate reducing bacteria in sediment

Rusmana

2004

FEMS Microbiology Ecology

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The use of chlorate as a selective inhibitor of dissimilative nitrate reduction was studied using pure cultures of Comamonas testosteroni (a denitrifier) and Klebsiella pneumoniae (a nitrate-ammonifier) isolated from estuarine sediment, and in sediment slurry. Pure culture experiments demonstrated that chlorate selectively inhibited membrane-bound nitrate reductase (Nar) activity, probably by blocking nitrate transporters (NarK). Sediment slurry experiments showed that chlorate inhibited nitrate reduction and N 2 O formation, but did not inhibit nitrite reduction and its N 2 O formation, indicating that chlorate selectively inhibited only the first step of nitrate reduction. Chlorite chemically oxidized nitrite to nitrate and could not be used as a selective inhibitor of nitrite metabolism, although chlorite apparently selectively inhibited formation of N 2 O from nitrite. Chlorate can be used as a specific inhibitor to distinguish between nitrate reduction by Nap or Nar in natural communities of microorganisms.

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Mobile/personal terminals for COMETS advanced mobile satellite communication experiment

Cited by 6 publications

References 3 publications

Cryptosporidiosis in man: Parasite life cycle and fine structural pathology

Cryptosporidiosis in man: Parasite life cycle and fine structural pathology

Near-Field Microwave Microscopy of Materials Properties

Use of chlorate as a selective inhibitor to distinguish membrane-bound nitrate reductase (Nar) and periplasmic nitrate reductase (Nap) of dissimilative nitrate reducing bacteria in sediment

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