ZIB

1

Electronic Resource

Magnetic resonance imaging of cor triatriatum (1988)

Rumancik, W. M. ; Hernanz-Schulman, M. ; Rutkowski, M. M. ; [et al.]

Springer

Pediatric cardiology 9 (1988), S. 149-151

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ISSN: 1432-1971

Keywords: Cor triatriatum ; Magnetic resonance imaging ; Phase display

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary Magnetic resonance imaging utilizing spin echo sequences was used to demonstrate cor triatriatum in an 18-year-old boy. Phase map images aided the diagnosis by demonstrating the presence of slowly flowing blood in the accessory atrial chamber. Magnetic resonance is an excellent modality for the noninvasive diagnosis of cor triatriatum.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02080555

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2

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Effect of hydrostatic pressure on the electrical conductivity of FEF carbon black-loaded sbr vulcanizates (1987)

Nasr, G. M. ; Amin, M. ; Osman, H. M. ; [et al.]

Weinheim : Wiley-Blackwell

Angewandte Makromolekulare Chemie 150 (1987), S. 21-32

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ISSN: 0003-3146

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Description / Table of Contents: Es wurde die elektrische Leitfähigkeit von Styrol-Butadien-Kautschuk (SBR-1502), der mit unterschiedlichen Konzentrationen von sehr schnell spritzbarem Furnace-Ruß (70, 80, 90 und 100 phr) beladen war, untersucht. Auf der Basis des Modells von Holm wurde eine qualitative Beschreibung für die elektrische Leitfähigkeit durch diese Verbundstoffe gesucht. Der Druckkoeffizient K wurde berechnet und zeigte eine starke Abhängigkeit von den Rußkonzentrationen.

Notes: The electrical conduction was investigated in styrene butadiene rubber (SBR-1502) loaded with different concentrations of fast extrusion furnace (FEF) black (70, 80, 90, and 100 phr). On the bases of Holm's model, a qualitative description for the electrical conduction through these composites was sought. The pressure coefficient K was calculated and found to be strongly dependent on the carbon black concentrations.

Additional Material: 7 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/apmc.1987.051500103

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3

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Silylation-Mediated Oxidation of 2,2′-Anhydro-5,6-dihydro-5-azacytidineAbbreviations used TMS, trimethylsilyl; BSTFA, N,O-bis(trimethylsilyl)-trifluoroacetamide; BSA, N,O-bis(trimethylsilyl)-acetamide (1987)

Abbasi, M. M. ; El-Wassimi, M. T. ; Osman, F. H. ; [et al.]

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 329 (1987), S. 209-216

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Reaction of 5,6-dihydro-5-azacytidine hydrochloride 1 with 2-acetoxy-isobutyryl chloride produced 5′-O-(2,5,5-trimethyl-1,3-dioxolan-4-on-2-yl)-3′-O-acetyl-5,6-dihydro-2,2′-anhydro-1-β-D-arabinofuranosyl-5-azacytosine hydrochloride 2, which upon partial hydrolysis with EtOH/HCl at 4°C gave 3′-O-acetyl-5,6-dihydro-2,2′-anhydro-1-β-D-arabinofuranosyl-5-azacytosine hydrochloride 3. The hydrolysis of 3 with EtOH/HCl at 25°C gave 2,2′-anhydro-5,6-dihydro-1-β-D-arabinofuranosyl-5-azacytosine hydrochloride 4. Silylation oxidation of 3 and 4 with BSTFA or BSA in acetonitrile produced the N-substituted derivatives of 1-β-D-arabinofuranosyl-5-azacytosine 8 and 7, respectively.

Additional Material: 2 Tab.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.19873290208

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4

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Copolymerization and interaction of acrylonitrile and indene (1989)

Mikhael, M. G. ; Mokhtar, S. M. ; Saad, G. R. ; [et al.]

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part A: Polymer Chemistry 27 (1989), S. 185-191

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ISSN: 0887-624X

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The donor-acceptor interaction of acrylonitrile (AN) with indene (In) has been investigated by means of ultraviolet spectroscopy and dielectric polarization measurements. The latter method yielded a value of 0.5 for the association constant of the charge-transfer-complex (CTC) and a 4.02 D for its dipole moment. The copolymerization of the two monomers was characterized by a tendency towards alternation when conducted in the bulk. This might be due to the participation of a weak CTC in the process of copolymerization. However, this tendency disappeared in polar solvents such as DMF.

Additional Material: 3 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/pola.1989.080270116

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5

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Fully automated column-switching HPLC determination of aflatoxin M1 in milk using dialysis as sample preparation (1989)

Th. Tuinstra, L. G. M. ; Kienhuis, P. G. M. ; Traag, W. A. ; [et al.]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 12 (1989), S. 709-713

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ISSN: 0935-6304

Keywords: HPLC ; Column switching ; Dialysis ; Fully automated analysis ; Aflatoxin M1 in milk ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: A procedure has been developed for the automated determination of aflatoxin M1 in decreamed milk, by using on-line dialysis and subsequent trace enrichment on a reverse phase column. After foreflush to the analytical column the determination is performed with fluorescence detection. Fully automated analysis within 10 min is thus possible with reproducible dialysis recoveries above 50% (CV is 3.3%, n = 20) and detection levels of 50 ng/kg.

Additional Material: 8 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jhrc.1240121104

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6

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Influence of hydrostatic pressure on the electrical properties of unvulcanized FEF-loaded SBR (1989)

Nasr, G. M. ; Amin, M. ; Osman, H. M. ; [et al.]

New York, NY [u.a.] : Wiley-Blackwell

Journal of Applied Polymer Science 37 (1989), S. 1327-1337

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ISSN: 0021-8995

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Styrene butadience rubber (SBR-1502) loaded with different concentrations of FEF carbon black was tested to find out the effect of pressure on its electrical properties during vulcanization. Using the thermodynamically calculated values of the pressure coefficient (K), the thermoelastic coefficient (L = ∂T/∂P) was also estimated and compared with that obtained by other workers. The thermoelastic coefficient was found to be strongly dependent on the carbon black concentration.

Additional Material: 8 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/app.1989.070370516

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7

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Photo[2+2]Cycloaddition Reaction of Maleic Acid Anhydride (1989)

Abou-Elzahab, M. M. ; Metwally, M. A. ; Dawidar, A. M. ; [et al.]

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 331 (1989), S. 999-1001

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.19893310615

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8

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Reactions with monothiomalonamides: Synthesis of Polysubstituted Thiazoles (1988)

El-Reedy, A. M. ; Hussain, S. M. ; Youssef, M. M. M.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 330 (1988), S. 521-529

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Monothiomalonamides (1a, b) coupled with arenediazonium salts yield the α-arylhydrazone derivatives (2a - c), Reaction of 1a, b with α-haloketones afforded polysubstituted thiazoles 6a - c. Compounds 6 condensed with p-nitrosodimethylaniline and coupled with arenediazonium salts yield the azomethine derivatives 7a - d and the arylhydrazones 8a - h, respectively.Compounds 1a, b behave differently towards hydrazonyl chlorides, they yielded arylazodimethylthiazoles 13a - c and thiazolylacetanilides 12a - c respectively.

Additional Material: 5 Tab.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.19883300405

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9

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Magnetic resonance imaging of avascular necrosis of the femoral head (1986)

Thickman, D. ; Axel, L. ; Kressel, H. Y. ; [et al.]

Springer

Skeletal radiology 15 (1986), S. 133-140

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ISSN: 1432-2161

Keywords: Magnetic resonance imaging ; Osteonecrosis ; Bone disease, hip

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract This study investigates the role of magnetic resonance imaging (MR) in identifying avascular necrosis (AVN) of the femoral head and in monitoring its therapy. The detection of AVN, particularly in its early stages, is imperative to give therapeutic intervention the best opportunity for successful management. The results of magnetic resonance imaging are compared with those of the standard diagnostic modalities in evaluation of patients with the lesion. Examinations were performed at 0.12 T with a repetition time (TR) of 143 ms and times to echo (TE's) of 10 or 20 ms. This study represents a retrospective review of 90 hips which were examined in 45 consecutive patients. Of these, 52 hips were biopsied as part of treatment. MR was shown to be sensitive in the detection of AVN. Comparison of MR with radionuclide imaging showed comparable sensitivity and specificity. MR was also noted to be sensitive in the detection of early AVN. Preliminary results suggest that MR can monitor treatment of the affected hip, and may even be able to predict patient response to therapy. Although further work is necessary to determine the role of MR in the evaluation of the patient presenting with hip pain, MR is a sensitive method in detecting AVN and in monitoring its course in patients suspected of having the disease.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00350207

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10

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Coordination properties of Salicylidene Salicyloyl Hydrazone and related ligands with copper(II) sulphate, nitrate and acetate (1986)

Temerk, Y. M. ; Aly, A. A. M. ; Kamal, M. M. ; [et al.]

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 328 (1986), S. 285-290

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ISSN: 0021-8383

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Additional Material: 3 Tab.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/prac.19863280219

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