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  • 1
    Electronic Resource
    Electronic Resource
    Laser ionization time-of-flight mass spectrometric study on laser ablation of a graphite-like material of (BC2N)ncomposition (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 2220-2222 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Laser ionization time-of-flight mass spectrometry has been used to probe Nd:YAG laser ablation products from a new graphite-like material of (BC2N)n composition. Neutral species mainly composed of one, two, and three atoms were detected. A center-of-mass velocity of 1.2×105 cm/s was obtained for the expansion of the products. An influence of collision-induced reactions is suggested for the product generation. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.358807
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  • 2
    Electronic Resource
    Electronic Resource
    Technique of surface-wave scattering and calibration with simple liquids (1986)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 1158-1162 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Heterodyne detection of light scattered from capillary waves is used to study the surface properties of the air–liquid interface. A diffraction grating is employed to select a precise ripplon wave vector k and to provide a stable local oscillator field. The optics are designed to form a real image of the grating on the surface, thus allowing the measurements to be reproducible within 5%. The power spectrum detected in frequency domain is well fitted by a Lorentzian profile for the range of ripplon wave vectors 260≤k≤390 cm−1. The shape of the scattered spectra at each wave vector is corrected for the incident beam profile by effecting a convolution of the Lorentzian and Gaussian functional forms. The surface tensions and the kinematic viscosities of water, anisole, and ethanol are deduced from the ripplon dispersion relation corrected to the first order in damping, and found to be within 5% of the literature values. Thus we confirm the validity of approximations made for the instrumental function and the dispersion relation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138620
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  • 3
    Electronic Resource
    Electronic Resource
    Accelerator for ion beams using triangle-shaped accelerated waves (1986)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 57 (1986), S. 2935-2939 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An accelerator for ion beams has been designed and constructed in which ions collectively undergo acceleration in the wells of a train of triangle-shaped potential waves moving with a constant acceleration. The accelerator mentioned above is planned for investigating the conditions necessary for acceleration of ions with a mass distribution, such as cluster ions, which will be available in future fusion reactors. The method and the circuits for generations of propagating accelerated waves are described and the structure of the accelerator with an acceleration space 120 cm long is mentioned. A result is reported on a preliminary experiment for acceleration of an argon ion beam, which shows that the accelerator works well.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139020
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  • 4
    Electronic Resource
    Electronic Resource
    Photoluminescence dependence on heterointerface for metalorganic chemical vapor deposition grown GaInNAs/GaAs quantum wells (2002)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 80 (2002), S. 962-964 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We investigate the effect of the sequence of gas flows at heterointerfaces on optical quality of GaInNAs/GaAs quantum wells grown by metalorganic chemical vapor deposition (MOCVD). We point out that the degradation mechanism of photoluminescence of GaInNAs grown by MOCVD method is categorized in two types. One is the formation of a GaNAs layer at the heterointerface which causes both increase of emission wavelength and degradation of crystal quality. The other is generation of nonradiative centers induced by incorporation of nitrogen (N). The insertion of a GaInAs layer to the GaInNAs/GaAs heterointerface is proposed to overcome these degradation mechanisms. A GaInAs intermediate layer is effective to suppress the GaNAs formation and to reduce the total GaInNAs thickness. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1448656
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  • 5
    Electronic Resource
    Electronic Resource
    Preparation of coiled carbon fibers by pyrolysis of acetylene using a Ni catalyst and sulfur or phosphorus compound impurity (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 62 (1993), S. 2322-2323 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Coiled carbon fibers were prepared by pyrolysis of acetylene activated using a Ni catalyst and a small amount of impurities at 600–800 °C. It was found that the addition of a small amount of sulfur or phosphorus compound impurities in acetylene was indispensable for the growth of coiled carbon fibers. Among the sulfur compounds used, thiophene was the most effective for growing coiled carbon fibers with uniform coil diameter and producing a high yield (about 50% coils). Similar results were obtained with phosphorus trichloride.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.109634
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  • 6
    Electronic Resource
    Electronic Resource
    Overexpression of tumour necrosis factor-α-converting enzyme in psoriasis (2005)
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 152 (2005), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background  Tumour necrosis factor (TNF)-α-converting enzyme (TACE) is a metalloproteinase-disintegrin that releases soluble TNF-α from cells by cleaving within the extracellular domain of membrane-bound pro-TNF-α. It was proposed that TNF-α is involved in the pathogenesis of psoriasis, and it is therefore suggested that TACE has important roles in psoriasis. However, it is unclear whether TACE is expressed in psoriatic tissue.Objectives  To clarify whether TACE is expressed in psoriatic lesions and whether expression levels of TACE mRNA are increased in lesional compared with nonlesional psoriatic skin.Methods  Skin biopsies were obtained from patients with psoriasis. We examined the expression of TACE in psoriatic tissues using a novel real-time quantitative reverse transcriptase–polymerase chain reaction method and immunohistochemical analysis.Results  There was a significant rise in the level of TACE mRNA expression in lesional psoriatic skin compared with nonlesional skin in all patients. There was a statistically significant rise in the level of TACE mRNA expression in lesional psoriatic skin compared with nonlesional skin (mean ± SD TACE/glyceraldehyde-3-phosphate dehydrogenase ratio 0·031 ± 0·012 vs. 0·009 ± 0·002, P 〈 0·05). In lesional psoriatic skin, immunostaining with anti-TACE antibody was present throughout all layers of the epidermis. TACE immunostaining was found in the cytoplasm of keratinocytes. There was staining associated with blood vessels in the papillary dermis and perivascular inflammatory cells. In particular, mast cells showed strong staining. They contained numerous granules that were stained for TACE in the cytoplasm.Conclusions  The findings of the present study suggest that elevation of TACE mRNA in psoriatic lesions is due to many cells, particularly mast cells, that function in lesional psoriatic skin as an important source of TNF-α and other cytokines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2133.2005.06440.x
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  • 7
    Electronic Resource
    Electronic Resource
    Intra-operative monitoring of cerebral haemodynamics in a patient with Takayasu's arteritis (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 48 (1993), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Transcranial Doppler and continuous measurements of jugular venous oxygen saturation were used to monitor intra-operative cerebral haemodynamics in a patient with Takayasu's arteritis who underwent carotid revascularisation. These techniques were found to be of clinical value for detection of cerebral hypoperfusion and assessment of the effects of therapeutic intervention.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1993.tb07069.x
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  • 8
    Electronic Resource
    Electronic Resource
    Emergency X ray-guided nasotracheal intubation in a patient with a spinal epidural haematoma (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 49 (1994), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A patient with a spinal epidural haematoma who developed tetraparesis and respiratory insufficiency is described. Nasotracheal intubation was successfully and rapidly undertaken with the aid of continuous fluoroscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1994.tb03475.x
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  • 9
    Electronic Resource
    Electronic Resource
    Butyl Benzyl Phthalate, an Endocrine Disrupter, Inhibits Pulsatile Luteinizing Hormone Secretion Under an Insulin-Induced Hypoglycaemic State in Ovariectomized Rats (2002)
    Oxford, UK : Blackwell Science, Ltd
    Journal of neuroendocrinology 14 (2002), S. 0 
    Details
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Butyl benzyl phthalate (BBP) and bisphenol A (BPA), termed endocrine disrupters, are known to mimic oestrogen in their actions, and therefore there is concern about their effect on reproductive functions. Since it is reported that the inhibitory action of oestrogen on the pulsatile secretion of luteinizing hormone (LH) is enhanced under insulin-induced hypoglycaemia, whether this also applies to BBP and BPA was examined in the present study. In adult ovariectomized (OVX) rats, the pulsatile LH secretion 24 h after subcutaneous injection of 10 mg BBP (BBP-treated), 10 mg BPA (BPA-treated) or 100 ng 17β-oestradiol (E2-treated), all of which were dissolved in sesame oil, was not changed significantly compared to that after the injection of sesame oil only. Furthermore, in oil-treated OVX rats, the pulsatile LH secretion immediately after intravenous injection of insulin (1.0 U) was not changed compared to that after saline injection. In BBP-treated OVX rats, the injection of insulin (1.0 U) significantly decreased the number of LH pulses as in E2-treated OVX rats. The injection of insulin did not significantly affect the amplitude of LH pulses in BBP-, BPA- and E2-treated OVX rats. The results indicate that the oestrogenic action of BBP is significantly enhanced by insulin-induced hypoglycaemia and thus the pulsatile LH secretion is inhibited. We suggest that weak oestrogenic endocrine disrupters may become harmful to reproductive functions even in adult female rats, if acting under a low energy state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2826.2002.00804.x
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  • 10
    Electronic Resource
    Electronic Resource
    Double-stranded RNA activates RANTES gene transcription through co-operation of nuclear factor-κB and interferon regulatory factors in human airway epithelial cells (2004)
    Oxford, UK : Blackwell Science Ltd
    Clinical & experimental allergy 34 (2004), S. 0 
    Details
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Regulated on activation, normal T cells expressed and secreted (RANTES) is a member of the CC chemokine family and contributes to viral-induced airway inflammation including exacerbations of asthma. Double-stranded RNA (dsRNA) is known to be synthesized during replication of many viruses and a ligand of Toll-like receptor 3. We hypothesized that dsRNA may mimic viral infection and induce RANTES expression in airway epithelial cells.Objective We first confirmed that dsRNA up-regulated RANTES mRNA and protein synthesis in the airway epithelial cells. We next focused our studies on the transcriptional regulation of RANTES.Methods Airway epithelial cell line BEAS-2B and normal human bronchial epithelial cells were used in vitro study. Levels of RANTES mRNA and protein expression were determined with RT-PCR and ELISA. Mechanisms of transcriptional regulation were assessed by electrophoretic mobility shift assay and dual luciferase assay using RANTES promoter-luciferase reporter plasmids.Results Activation of nuclear factor-κB (NF-κB) was confirmed by nuclear protein binding to a DNA probe derived from the RANTES promoter. Activity of the RANTES promoter was increased by dsRNA. The stimulation with dsRNA was partially inhibited in plasmids mutated at either of the binding sites for NF-κB or IFN regulatory factors (IRFs). When both sites were mutated, the activation was totally abrogated.Conclusion These results imply that dsRNA activates NF-κB and IRFs and these transcription factors activate transcription of the RANTES promoter and its protein expression in airway epithelial cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2222.2004.1941.x
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