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  • 1
    Electronic Resource
    Electronic Resource
    Letters. Seconday blights caused by the automobile. (1970)
    s.l. : American Chemical Society
    Environmental science & technology 4 (1970), S. 364-364 
    Details
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/es60040a603
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  • 2
    Electronic Resource
    Electronic Resource
    Letters. Haste and waste (1972)
    s.l. : American Chemical Society
    Environmental science & technology 6 (1972), S. 4-4 
    Details
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/es60060a601
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  • 3
    Electronic Resource
    Electronic Resource
    Enteral and parenteral feeding in the dysphagic patient (1988)
    Springer
    Dysphagia 3 (1988), S. 38-45 
    Details
    ISSN: 1432-0460
    Keywords: Enteral feeding ; Nutrition, total parenteral
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The increasing recognition of malnutrition among hospitalized patients has spawned a variety of sophisticated forms of nutritional support. Dysphagic patients, in particular, are easily identifiable and present with varying degrees of nutritional compromise that complicate the underlying swallowing disorder. Choice of therapeutic modalities available and their relative risks and benefits are reviewed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02406278
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  • 4
    Electronic Resource
    Electronic Resource
    Resistive Electrical Switching of Nonvolatile Memories from Electrodeposited Copper Tetracyanoquinodimethane (CuTCNQ) (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advances in science and technology Vol. 54 (Sept. 2008), p. 464-469 
    Details
    ISSN: 1662-0356
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Natural Sciences in General , Technology
    Notes: CuTCNQ is a charge transfer complex displaying resistive electrical switching whensandwiched between Cu and Al contacts. Corresponding memory cells switch from a native highresistive OFF state (HRS) to a low resistive ON state (LRS) by applying a negative voltage to theAl with respect to the Cu. Inversion of the signal polarity leads to switching from the LRS to theHRS. Typical CuTCNQ preparation occurs by a chemical reaction of a Cu substrate with TCNQ,involving (partial) corrosion of the metal. In this contribution we present electrodeposition ofCuTCNQ on Au and Pt substrates, leading – in contrast to previously published dendritically crystalgrowth – to relatively smooth, micrometer thick layers. Corresponding large area cross-bar memoryarrays (200€m by 200€m, with Al top contacts) exhibited up to several thousand write/erase cycleswith an ON/OFF current ratio of 5-10. Furthermore preliminary growth experiments with blankettungsten bottom contact Metal–Oxide–Semiconductor (CMOS) wafers with 250 nm diametercontact holes showed that electrodeposition is a suitable method for CuTCNQ integration
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.54.464.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Non-invasive RNA-based determination of fetal Rhesus D type: a prospective study based on 96 pregnancies (1999)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 106 (1999), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objectives To develop a non–invasive method for determining fetal RhD status in order to provide improved care for women most at risk.Design A prospective study.Methods Fetal erythroblasts were enriched from the peripheral circulation of 96 RhD negative women with pregnancies at various stages in gestation using discontinuous density gradients. Amplification of RhD–specific mRNAs was carried out by reverse transcription–polymerase chain reaction assay. RNA, rather than DNA, was selected for amplification because it rarely contaminates samples, thus resulting in fewer false positives; moreover, its presence in multiple copies per cell should enhance the sensitivity of the assay, resulting in fewer false negatives. The study was prospective, relying on postnatal serological confirmation of RhD phenotype.Results The assay was 75% accurate at predicting fetal RhD status, comparing favourably with standard genomic DNA–based assays. However, we found that accuracy dropped from 85% (29134) in the third trimester of pregnancy, to 82% (32/39) in the second and 48% (11/23) in the first trimester. Discordant data were due to false negatives in the majority (78%) of cases.Conclusions We suggest that reverse transcription may be a useful and perhaps more sensitive alternative to standard genomic polymerase chain reaction in the majority of cases. However, under certain circumstances the absence or reduction of fetal erythroblasts or possibly RhD mRNA in some preparations may compromise the accuracy of the assay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1999.tb08108.x
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  • 6
    Electronic Resource
    Electronic Resource
    Silicates in some Iron Meteorites (1964)
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 596-597 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Our examination of Kodaikanal confirms most of Berwerth's observations. Kodaikanal contains about 10 vol. per cent of two types of silicate nodules enclosed in metal. One type consists of glass (up to 8 mm across); the other type consists of an aggregate of glass and several silicates (315 mm ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/201596a0
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  • 7
    Electronic Resource
    Electronic Resource
    Sources of HCl and HF in the Atmosphere of Venus (1968)
    [s.l.] : Nature Publishing Group
    Nature 220 (1968), S. 55-57 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The data necessary for the calculation may be obtained from the Venera 4 measurements1 as interpreted by Reese and Swan6. According to these sources, the probe descended into the atmosphere approximately 5 degrees from the equator and on the dark side approximately 80 degrees from the terminator. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/220055a0
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of Temperature on the Strength and Composition of the Upper Lithosphere of Venus (1969)
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 354-356 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Large scale radial chemical differentiation of a lithosphere and the resultant tendency toward chemical and mechanical equilibrium should occur largely through the following mechanisms: (1) local differentiation and radial movement of silicate melts (magmas), (2) local differentiation and radial ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/224354a0
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  • 9
    Electronic Resource
    Electronic Resource
    D1 Dopamine Receptor Binding and mRNA Levels Are Not Altered After Neonatal 6-Hydroxydopamine Treatment: Evidence Against Dopamine-Mediated Induction of D1 Dopamine Receptors During Postnatal Development (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 61 (1993), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: The role of dopaminergic innervation on the postnatal developmental expression of D1 dopamine receptors was investigated. Bilateral destruction of dopa-mine-containing neurons was achieved by treating rats intracisternally with 6-hydroxydopamine (6-OHDA) on postnatal day 3, and rats were killed on day 21. To ensure effective reduction of D1 receptor activation by residual dopamine, a group of 6-OHDA-lesioned rats was given twice daily injections of the D1 receptor antagonist SCH-23390, from day 4 to 20. D1 dopamine receptor binding was assessed in the caudate—putamen, nucleus accumbens, and olfactory tubercle by quantitative autoradiographic analysis of [3H]SCH-23390 binding. In addition, the relative amount of D1A receptor mRNA was assessed by in situ hybridization of a 35S-labeled riboprobe. In the developing rats, neither the amount of [3H]SCH-23390 binding nor the amount of D1A receptor mRNA was altered by 6-OHDA lesioning followed by chronic treatment with SCH-23390. Thus, bilateral destruction of dopamine-containing neurons and treatment with SCH-23390 in neonatal rats did not interfere with the developmental expression of D1 receptors or alter the levels of mRNA that code for this receptor protein. Treatment of intact rats with SCH-23390 from postnatal day 4 to 20 also did not alter [3H]SCH-23390 binding or levels of D1 receptor mRNA. However, adult rats treated chronically with SCH-23390 exhibited increased [3H]SCH-23390 binding but did not show a significant change in D1 receptor mRNA levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1993.tb13616.x
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  • 10
    Electronic Resource
    Electronic Resource
    Neonatal and Adult 6-Hydroxydopamine-Induced Lesions Differentially Alter Tachykinin and Enkephalin Gene Expression (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 49 (1987), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: The present investigation examined the effects of neonatal and adult 6-hydroxydopamine (6-OHDA)-induced lesions of dopaminergic neurons on opioid and tachykinin peptides and their gene expression in the rat basal ganglia. This work was undertaken to determine if changes in these neuropeptide systems were contributing to the differing behavioral responses observed between neonatally and adult-lesioned rats after dopamine agonist administration. [Met5]Enkephalin (ME) content was increased in striatal tissue from both 6-OHDA-lesioned groups when compared with unlesioned controls. Dynorphin-A (1–8) content was not altered by the 6-OHDA lesions. The tachykinin peptides substance P and neurokinin A were significantly decreased in level in the striatum and substantia nigra of neonatally lesioned rats, but not in the adult-lesioned rats, when compared with unlesioned controls. Proenkephalin mRNA abundance (quantified by an RNA-cDNA hybridization technique) and precursor level (as reflected by cryptic ME content) were increased in the striatum of both neonatally and adult-lesioned rats. The abundance of preprotachykinin mRNA coding for the tachykinin peptides was markedly decreased in the neonatally lesioned rats, whereas only a small reduction was observed in the adult-lesioned rats. These results suggest that destruction of dopamine-containing terminals with 6-OHDA elevates the level of ME by accelerating transcriptional and/or translational processes; conversely, the reduced content of tachykinins in neonatally lesioned rats may be due to a reduction in such processes. Thus, preproenkephalin-A and preprotachykinin gene expression are differentially regulated after lesioning of catecholamine-containing neurons, an observation suggesting a close functional relationship among these neurotransmitter systems. Furthermore, of the peptides studied, only levels of the tachykinin peptides were differentially altered in the striatum and substantia nigra of the neonatally lesioned rats compared with adult-lesioned rats; therefore, these peptides may be associated with the distinctive behavioral differences between neonatally and adult 6-OHDA-lesioned rats given dopamine agonists.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1987.tb01036.x
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