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  • 1
    Digitale Medien
    Digitale Medien
    Magnetism of antiferromagnetic α-Mn : 37th Annual conference on magnetism and magnetic materials (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 6546-6547 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The approximate d bands of antiferromagnetic α-Mn are formulated, using Deegan's prescription and the formulas of Slater and Koster, in consideration of the crystal and magnetic structures. The magnetic moments of 29 atoms are calculated by adopting reasonable coefficients of the effective exchange interaction. The obtained result is much the same as the experimental result.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.352558
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  • 2
    Digitale Medien
    Digitale Medien
    Performance of the NANOGUN™ electron cyclotron resonance ion source applied for nuclear astrophysics : The 8th international conference on ion sources (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 1075-1078 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: A compact low-energy, high current accelerator has been constructed for the study of fusion reactions relevant to the field of nuclear astrophysics. It consists of a modified NANOGUN™, a low-energy beam transport, a windowless gas target, a beam calorimeter, and a detector system. The accelerator and the NANOGUN ion source with a single extraction electrode provides 930 μA 3He1+ of 20 keV at a gas target chamber. A two-electrode extraction has been tested for a few source voltages. The obtained target current is 75, 140, 110, 110, 105, 78, and 80 μA for 20, 25, 30, 35, 38, 40, and 45 kV potential, respectively. The transport efficiency from the source to the target is 5.7%. © 2000 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1150389
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  • 3
    Digitale Medien
    Digitale Medien
    Analysis of the green fraction of humic acids (1996)
    Oxford, UK : Blackwell Publishing Ltd
    European journal of soil science 47 (1996), S. 0 
    Details
    ISSN: 1365-2389
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Geologie und Paläontologie , Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The green fraction of humic acids (HAs), Pg, was fractionated by gel chromatography on Sephadex G-50. Repeated chromatography of the crude Pg obtained by the first chromatography of HA yielded a sharp peak (G1) and two broad bands (G2) of purified Pg. The recovery of Pg in G1 and G2 as percentages of the total Pg content of the HA were 16.2 and 14.5%, respectively. Distinct peaks were detected at 615, 570, 450 and 280 nm in the UV-visible spectra of both G1 and G2 in alkali solutions. Estimates of weight-average molecular weight were 9.7 * 103 for G1 and 1.23 * 104 for G2. In the 1H-NMR spectra the percentage of hydroxyl groups of 4,9-dihydroxy-perylene-3, 10-quinone (DHPQ) nuclei, which are known to be the chromophore of Pg, was 4.1 and 4.5% of the total H, respectively. Based on these values and the H/C ratios, DHPQ-C was estimated as 28% of total C. 13C-NMR spectra obtained using inverse-gated decoupling yielded 40–41% aromatic C, which suggested the presence of aromatic rings other than DHPQ. All of the IR, 13C- and 1H-NMR spectra indicated that the two purified Pg samples largely differed from each other in their contents of alkyl and polysaccharide components.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2389.1996.tb01390.x
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  • 4
    Digitale Medien
    Digitale Medien
    Expression of the 67-kDa elastin receptor in perforating 
skin disorders (2002)
    Oxford, UK : Blackwell Science, Ltd
    British journal of dermatology 146 (2002), S. 0 
    Details
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Summary Background  Perforating skin dermatoses include elastosis perforans serpiginosa (EPS), reactive perforating collagenosis, Kyrle's disease and perforating folliculitis. In addition to these four diseases, an acquired form of perforating dermatosis associated with diabetes mellitus and/or chronic renal failure has been reported for which the term acquired perforating dermatosis (APD) was proposed. The molecular mechanism of transepidermal elimination of dermal components in perforating skin dermatoses remains unclear. We recently demonstrated that the 67-kDa elastin receptor can be detected in the epidermis eliminating altered elastic fibres in EPS, suggesting that the elastin–keratinocyte interaction may play a role in transepidermal elimination in EPS.Objectives  To determine whether the 67-kDa elastin receptor is involved in other perforating diseases.Methods  Paraffin-embedded skin specimens from new cases of EPS (n = 2), APD (n = 15) and perforating granuloma annulare (PGA; n = 2) were studied immunohistochemically using a specific antibody to the 67-kDa elastin receptor. In one case of EPS, two different sites from a single lesion, a central atrophic area and a peripheral keratotic area, were studied.Results  Expression of the elastin receptor was detected in the epidermis surrounding the elastic materials in both cases of EPS. The elastin receptor was not detected in the central inactive area, whereas it was expressed strongly in the peripheral keratotic active area. The elastin receptor was also detected in three of 15 cases of APD in which a few elastic fibres were found in the eliminated dermal materials. In one case of APD, the elastin receptor was not detected in spite of the presence of a few elastic fibres in the eliminated materials. The elastin receptor was not detected in either case of PGA.Conclusions  Expression of the elastin receptor in EPS was seen in both cases studied and was dependent on the stage of the lesion. Expression of the elastin receptor in APD appeared to be related to the amount of elastic fibres in the eliminated materials. Thus, expression of the elastin receptor in perforating skin disorders may depend on the stage of the lesion and/or the content of elastic fibres in the dermal materials being eliminated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1365-2133.2002.04550.x
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  • 5
    Digitale Medien
    Digitale Medien
    Morphoea associated with B–cell Lymphoma (1997)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 136 (1997), S. 0 
    Details
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2133.1997.tb14926.x
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  • 6
    Digitale Medien
    Digitale Medien
    Tadpole Collagenase. Preparation and Purification* (1966)
    s.l. : American Chemical Society
    Biochemistry 5 (1966), S. 3123-3130 
    Details
    ISSN: 1520-4995
    Quelle: ACS Legacy Archives
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/bi00874a007
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  • 7
    Digitale Medien
    Digitale Medien
    Effect of Thyrotropin-Releasing Hormone (TRH) on Local Cerebral Glucose Utilization, by the Autoradiographic 2-Deoxy[14C]glucose Method, in Conscious and Pentobarbitalized Rats (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 35 (1980), S. 0 
    Details
    ISSN: 1471-4159
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Effects of TRH and pentobarbital alone, and in combination, on local cerebral glucose utilization of rats were studied by the autoradiographic 2-deoxy[14C] glucose method. TRH (5 mg/kg i.v.) reduced the rate of cerebral glucose utilization slightly in the whole brain. Locally, significant depression was observed in the following structures: frontal and visual cortices, hippocampus Ammon's horn and dentate gyrus, medial and lateral geniculate bodies, nucleus accumbens, caudate-putamen, substantia nigra, pontine gray matter, superior colliculus, superior olivary nucleus, vestibular nucleus, lateral lemniscus and cerebellar cortex. Pentobarbital (30 mg/kg i.v.) produced a marked and diffuse reduction in the rate of glucose utilization throughout the brain. TRH given 15 min after the administration of pentobarbital markedly shortened the pentobarbital sleeping time and caused some reversal of the depression in local cerebral glucose utilization produced by pentobarbital. These effects were almost completely abolished by pretreatment with intracerebroventricular injection of atropine methyl bromide (20 μg/rat). These results indicate that although TRH acts to cause a reduction in the rate of cerebral glucose utilization, it reverses the depression induced by pentobarbital, via a cholinergic mechanism, in a number of structures, some of which are related to monoaminergic systems and the reticulo-thalamo-cortical activating system. Nagai Y. et al. Effect of thyrotropin-releasing hormone (TRH) on local cerebral glucose utilization, by the autoradiographic 2-deoxy[14C]glucose method, in conscious and pentobarbitalized rats. J. Neurochem.35, 963-971 (1980).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1471-4159.1980.tb07095.x
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  • 8
    Digitale Medien
    Digitale Medien
    GANGLIOSIDE1−COMPOSITION OF BRAIN IN TAY-SACHS DISEASE: INCREASED AMOUNTS OF GD2 AND N-ACETYL-β-D-GALACTOSAMINYL GD1a GANGLIOSIDE (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 32 (1979), S. 0 
    Details
    ISSN: 1471-4159
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Abstract— The ganglioside composition of the brain of a patient with Tay-Sachs disease (TS-brain) was determined by a newly developed ganglioside-mapping procedure and compared with that of an age-matched control brain. GM2 ganglioside was the predominant component in TS-brain and the following gangliosides were also found, GM1, GD1a, GD1b and GT1 (major gangliosides in normal brain), and GM3, GD3, GD2 and GD1a-GAN (minor or undetectable components of normal brain). Individual gangliosides were isolated by column chromatography using a combination of DEAE-Sepharose, Iatrobeads and Silica Gel 60 and their structures were confirmed by comparing them with authentic standards using TLC, analysing their carbohydrate compositions by gas-liquid chromatography and cleaving them sequentially with glycosidases. The amounts of individual components were measured by quantitative densitometric scanning of the thin-layer plates. As a reflection of myelin breakdown, no sialosylgalactosyl ceramide was detectable in TS-brain. Although the total amounts of all gangliosides except GM2 in TS-brain were low, there were normal molar ratios of the main gangliosides in normal brain, that is, GM1, GD1a, GD1b and GT1. In comparison with the amount of GDla ganglioside, the amounts of GM2, GD2 and GD1a-GAN, which contain N-acetylgalactosamine as a terminal carbohydrate residue, were all elevated in TS-brain. The long chain bases of individual gangliosides contained both C-18 and C-20 sphingosine in different ratios and the ratio of C-20 to C-18 increased in the gangliosides in the order: GM2 〈 GM1 〈 GD1a 〈 GD1a-GAN 〈 GD1b 〈 GT1 in both normal brain and TS-brain. In contrast, GD2 and GD3 gangliosides consisted mainly of C-18 sphingosine. The C-20 to C-18 ratios of individual gangliosides in the TS-brain were lower than those of age-matched control brain.Hexosaminidase from Turbo cornutus showed the same specific activity and Km value in catalysing the cleavage of terminal N-acetylgalactosaminyl residues from GM2, GD2 and GD1a-GAN, suggesting that the brain gangliosides that increase in Tay-Sachs disease may be cleaved by the same enzyme.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1471-4159.1979.tb04560.x
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  • 9
    Digitale Medien
    Digitale Medien
    Technology in emulsified particle size control by new mixing method (2005)
    Oxford, UK : Blackwell Science Ltd
    International journal of cosmetic science 27 (2005), S. 0 
    Details
    ISSN: 1468-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: The best pulverization of emulsions that can be achieved using conventional mixing blades is in the micrometer realm. Now, with our new ‘thin-film spin system’ high-speed mixer, it is possible to attain pulverization in the nanometer realm. The particle size distribution can now be controlled to achieve an almost single distribution state. Particles can be pulverized without being severed, preventing secondary agglomeration after processing. This new mixing system also solves many of the problems common to conventional pulverization processes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1463-1318.2005.00273_4.x
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  • 10
    Digitale Medien
    Digitale Medien
    Properties of superconductive bandpass filters with thermal switches (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 63 (1993), S. 830-832 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: This letter reports experimental results on frequency tuning and switching in superconductive bandpass filters with thermal switches. The four-pole microstrip filters with frequency of 1.5 GHz and bandwidth of 1.5% were fabricated using Nb or EuBaCuO films. The addition of thermal switches around conductors did not affect the filter characteristics. A negative frequency shift of −2 MHz was confirmed at 8 K in the Nb filter with loss of less than 0.7 dB. In contrast, a positive shift of +5 MHz was observed at 77 K in the EuBaCuO filter. Furthermore, switching with a large difference of approximately 50 dB in loss was achieved in the Nb filters.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.109896
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