Showing papers by "University of Zagreb published in 1978"
82 citations
TL;DR: In this article, B 2 O 3 -stabilized α′- and β-C 2 S-polymorphs were determined using electron microscopy and electron diffraction at reaction times between 5 hours and 28 days.
41 citations
TL;DR: A multimycotoxin thin layer chromatographic method is described for the analysis of corn, and the following recoveries were obtained for corn samples: aflatoxin B1 71, ochratoxin A 87, and zearalenone 85.
Abstract: A multimycotoxin thin layer chromatographic method is described for the analysis of corn. Aflatoxins are extracted from the samples with acetonitrile-water, and sodium bicarbonate is added to separate the acidic ochratoxin from zearalenone and aflatoxin B1. After chloroform extraction, 1N NaOH is added to separate zearalenone and aflatoxin B1. The separated mycotoxins are spotted on TLC plates, which are then examined under ultraviolet light. The following recoveries (%) were obtained for corn samples: aflatoxin B1 71, ochratoxin A 87, and zearalenone 85. The limits of detection for the respective mycotoxins were 2, 40, and 200 ppb.
38 citations
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TL;DR: In this article, a new class of maps p : E → B between locally compact metric spaces called shape fibrations are defined in the spirit of the ANR-sequence approach to shape theory.
Abstract: The homotopy lifting property is not a very useful notion when applied to maps p : E → B between spaces with bad local properties. The approximate homotopy lifting property, introduced by D.S. Coram and P.F. Duvall, is useful only when E and B are ANR's. This paper introduces a new class of maps p : E → B between locally compact metric spaces called shape fibrations. Shape fibrations are defined in the spirit of the ANR-sequence approach to shape theory. It is shown that shape fibrations coincide with approximate fibrations whenever the base space and total space are ANR's. The following are typical results: 1. (i) fibers have the same shape whenever the base space is path connected, 2. (ii) any proper cell-like map between finite-dimensional locally compact metric spaces is a 3. shape fibration, and 4. (iii) the Taylor map is a cell-like map which fails to be a shape fibration.
37 citations
TL;DR: Analysis of the frequencies in matings performed at different levels of HLA incompatibility between parents in 35 couples with recurrent abnormal pregnancies of unknown etiology revealed a high degree of wife husband compatibility of the antigens of the HLA--A locus, but not of the ants of theHLA--B locus.
Abstract: Women with recurrent abnormal pregnancies of unknown etiology—as compared with those with recurrent abnormal pregnancies of known etiology and with normal controls—had a significantly increased frequency of antigen HLA—A9 (corr. P < 0.01). Analysis of the frequencies in matings performed at different levels of HLA incompatibility between parents in 35 couples with recurrent abnormal pregnancies of unknown etiology revealed a high degree of wife husband compatibility of the antigens of the HLA—A locus, but not of the antigens of the HLA—B locus. These results indicate that the HLA chromosomal region may influence the reproductive efficiency and the fate of the fetus.
34 citations
TL;DR: In this paper, it has been concluded that anolic layers on antimony as examined are semiconductors of n -type, band gap E g = 3 eV and donor density N D ≈10 17 cm −3.
29 citations
TL;DR: In this article, a modification and broadening of the basic Taylor expression, namely Taylor's linear theory, was proposed for the systems with a greater interelectrode distance.
Abstract: The transfer of mass onto a rotating cylindrical nickel electrode was investigated at relatively low rates. The simple electrochemical reaction of ferricyanide ion in an alkali medium was applied for this purpose. In the investigations particular attention was paid to the phenomenon of the penetration of eddies into the laminar sublayer. A modification and broadening of the basic Taylor expression, namely Taylor's linear theory, was proposed for the systems with a greater interelectrode distance. The experimental results can be better interpreted with a thus modified expression.
25 citations
TL;DR: The crystal structure of tetrakis(cyanomercuri)methane hydrate, C(HgCN)4 · H2O, has been determined from diffractometer X-ray intensity data by means of Patterson and Fourier methods and refined by the least-squares technique based on 911 independent reflections to the index R of 0.058 and Rω of 0.065.
23 citations
TL;DR: In this paper, total fatty acids derived from 12 species of mushrooms were separated into fatty acid and 2-hydroxy fatty acid fractions (FA and HFA), and analyzed quantitatively.
21 citations
01 Jan 1978
TL;DR: In this article, the effect of anticholinesterease pesticides on the eye and on vision was investigated, and the results showed that anticholestereases have a negative effect on vision.
Abstract: (1978). Effect of Anticholinesterease Pesticides on the eye and on Vision. CRC Critical Reviews in Toxicology: Vol. 6, No. 1, pp. 1-23.
20 citations
TL;DR: Patients with maturity onset diabetes treated with gliclazide were followed up for 6 months to 1 year to assess the effect on platelet adhesiveness and control of blood sugar.
Abstract: Gliclazide is an oral hypoglycaemic agent which has been shown in animal models to reduce platelet adhesiveness. In this study, 50 patients with maturity onset diabetes treated with gliclazide (80 mg/day) were followed up for 6 months to 1 year to assess the effect on platelet adhesiveness and control of blood sugar. A significant fall in mean platelet adhesiveness from 29% before treatment to 19.5% after 1 year (p less than 0.001) was achieved without any deleterious effect on normal haemostasis. The drug was well tolerated and achieved a satisfactory control of blood sugar levels at the dosages used.
TL;DR: Even-A nuclear systems with two protons in the 28-50 valence shell (even Zn isotopes) are described in the cluster-vibration model in this article.
01 Dec 1978-Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science
TL;DR: Callus tissue oficia faba has been grown from explants of immature embryos and karyological analysis by the Giemsa C-banding technique shows triploid and tri-aneuploid mitoses, all with an extra chromosome and with structurally altered karyotypes.
Abstract: Callus tissue ofVicia faba has been grown from explants of immature embryos. The karyological analysis by the Giemsa C-banding technique has shown triploid and tri-aneuploid mitoses, all with an extra chromosome and with structurally altered karyotypes. Estimates of the amounts of interphase heterochromatin (chromocentres) indicate endopolyploidy up to 12 n.
TL;DR: In the case of a degenerate single-particle oscillator shell, the particle-vibration coupling gives no contribution to M1 transitions which are l -forbidden in zeroth order as mentioned in this paper.
TL;DR: In this paper, conductivity measurements on isotopically substituted single crystals of TTF-TCNQ showed a relatively large shift in the phase transition temperatures at 52.5 K and 37.7 K.
TL;DR: Data indicate that stable, long-term chimerism of a specific class of lymphocytes is possible in nonirradiated, B-lymphocyte-deficient CBA/N mice.
Abstract: Nonirradiated B-lymphocyte-deficient CBA/N mice given T6T6 chromosome-marked normal CBA/CaHN spleen cells became lymphoid chimeras exhibiting donor-type mitoses. Normal CBA/CaHN recipients did not exhibit significant numbers of donor-type mitoses. The lymphoid cell chimerism in the CBA/N host appeared in spleen, lymph nodes, and Peyer's patches, but not in marrow or thymus. Stimulation of CBA/N-recipient spleen cells in vitro suggested that the chimerism involved donor T6T6 cells which were responsive to the B-lymphocyte mitogen, lipopolysaccharide, but not to the T-lymphocyte mitogen, phytohemagglutinin. These data indicate that stable, long-term chimerism of a specific class of lymphocytes is possible in nonirradiated, B-lymphocyte-deficient CBA/N mice.
TL;DR: In this article, a renormalization of the screening length in the diffuse double layer problem is proposed, and the renormalized screening length depends on both characteristic distances of the problem: the Debye length and solvent correlation length.
TL;DR: In this paper, the second-order rate constants for hydroxamic acids were obtained at 25°C for acetohydroxamic acid, hydroxyproline hydroxamides, tryptophane hydrastic acid, and histidine hydroxamide acid.
TL;DR: In this paper, it was shown that the substitution of Fe by Ni only shifts but does not influence the shape of the iron hyperfine field distribution contrary to that of crystalline f.c. Ni-Fe alloys.
TL;DR: The effect of sodium metabisulfite and cysteine on the oxidation of epinephrine in weak alkaline solutions was studied and the mechanism of these reactions also was explained.
TL;DR: In this article, the influence of water on the phase composition of aluminum hydroxides obtained by reaction of amalgamated aluminum with water has been studied, and the reaction was carried out in solutions of water and dioxane, and in sodium chloride solutions of different concentrations.
Abstract: The influence of the activity of water on the phase composition of aluminum hydroxides obtained by reaction of amalgamated aluminum with water has been studied. The reaction was carried out in solutions of water and dioxane, and in sodium chloride solutions of different concentrations; amorphous aluminum hydroxide was precipitated initially. The aging of this primary product to bayerite, pseudoboehmite, or an amorphous gel was controlled by the water content of the system. The pseudoboehmite has shown a significant reactivity when used as a source of alumina in the hydrothermal syntheses of kaolinite at relatively low temperature and pressure.
TL;DR: This article examined the Ginzburg-Landau model for the Peierls instability in HMTTF-TCNQ and showed that the three-dimensional ordering is dominated by the diagonal coupling between TCNQ chains in the alternating chain lattice.
Abstract: We examine the Ginzburg-Landau model for the Peierls instability in HMTTF-TCNQ and show that the three-dimensional ordering is dominated by the diagonal coupling between TCNQ chains in the alternating chain lattice. The transverse wave vector can be incommensurate and nearly constant in the wide temperature range below a common critical temperature (50 K) for both families of chains. We find that just below this temperature the ordering is dominated by the TCNQ chains, while the deformation of the HMTTF chains remains weak until about 43 K and then sharply increases. Thus we expect one phase transition temperature but two anomalies in physical properties. These results are consistent with the experimental observations of diffuse X-ray scattering, transport properties and specific heat.
01 Jan 1978
TL;DR: In this paper, the authors describe and illustrate three cases of myositis ossificans localisata which occurred among five cases of elbow contracture following tetanus, and they describe the treatment of these cases.
Abstract: The authors describe and illustrate three cases of myositis ossificans localisata which occurred among five cases of elbow contracture following tetanus.
TL;DR: The extraction of niobium(V) from aqueous hydrochloric and sulphuric acid solutions with 3-hydroxy-2-methyl-1-(4-tolyl)-4-pyridone (HY) dissolved in chloroform is described.
TL;DR: It was found that atratone influenced the biosynthesis of LRF at the hypothalamic level, and microcalorimetric technique found that 5α-DHT was bound exothermically to cytosol receptors, while in the presence of 0.4 to 2 nmol/s of atrat one the energetic level was changed and the binding was endothermic.
TL;DR: In this article, the authors evaluate the working relations between the sexes in the rural development of the SFR of Yugoslavia, and determine the productive role of farm women in Yugoslav agriculture.
Abstract: Summary
The aim of this paper is to determine the productive role of farm women in Yugoslav agriculture, and to evaluate the working relations between the sexes in the rural development of the SFR of Yugoslavia. The general assumption is that the marginal social position of farm women, who represent a neglected resource of rural development, is a consequence of their having a specific occupation - farming - and living in a specific social milieu - rural communities - rather than of belonging to a certain sex. It is argued that women may, in relation to men, be in the functioning role of substitution, integration or competition in the labour force. The analysis of Agricultural Census data reveals that in socialist farming, women substitute for deagrarianised men. They appear in their competitive function (which is an exception) only through their participation in self-management bodies of farm cooperatives. In private farming, women again substitute for men employed in non-agricultural jobs. The labour force on part-time family farms is more feminised than on full-time farms. Farm women only appear in their competitive function when decisions are made which concern both family life and household investments, while farm production and farm sale decisions are reached by men.
Resume
Le but de cet article est de determiner le role de la paysanne yougoslave dans le proces de developpement, et d'evaluer les rapports des deux sexes au travail dans le developpement rural de la Republique Populaire de Yougoslavie. l'opinion predominante: est que la position marginale de la femme dans la societe, qui est une source negligee de developpement rural, est une consequence du fait, qu'clle a une mission specifique -l'agriculture - et qu'elle vit dans un certain milieu social - commune rurale - plustot qu'une consequence du fait, qu'elle fait partie d'un certain sexe. l'opinion predomine, que les femmes, par rapport aux hommes, peuvent etre dans le role fonctionnant de la substitution, de l'integration et de la concurrence du monde du travail. l'analyse des donnees de “Agricultural Census” revele le fait, que dans l'agriculture socialiste les femmes remplacent les hommes, qui ne sont plus employe dans l'agriculture. Elles n'apparaissent dans leur fonction orientee vers la concurrence (ce qui est une exception) que par leur participation dans les cooperatives autogerees. Dans l'agriculture privee les femmes remplacent a nouveau les hommes, qui ne travaillent pas dans une profession de l'agriculture. La main d'oeuvre sur les fermes familiales dites“a temps partiel” est plustot feminine, contrairement aux fermes dites “a temps complet”. Les paysannes n'apparaissent dans leur fonction de concurrence que si des decisions doivent etre prises, qui concernent aussi bien la vie de famille que les investitions du menage, alors que les decisions concernant la production des fermes et la vente de produits agricoles sont prises par des hommes.
Zusammenfassung
Das Ziel dieses Artikels ist es, die Rolle der jugoslawischen Bauerin im Produktionsprozes zu bestimmen, und die Arbeitsbeziehungen zwi-schen den Geschlechtern in der landlichen Entwicklung der Volksre-publik Jugoslawien auszuwerten. Es ist herrschende Meinung, das die marginale gesellschaftliche Stellung der Frau, die eine vernachlassigte Quelle landlicher Entwicklung ist, eine Konsequenz daraus ist, das sie eine spezifische Aufgabe hat - die Landwirtschaft - und das sie in einem spezifischen sozialen Milieu lebt - landliche Gemeinden - viel eher, als weil sie einem bestimmten Geschlecht angehort. Es herrscht die Meinung, das Frauen, in Bezug auf Manner, in der funktionieren-den Rolle des Ersatzes, der Integration oder des Wettbewerbs in der Arbeitswelt sein kdnnen. Die Analyse der “Agricultural Census“ Daten enthullt die Tatsache, daβ in der sozialistischen Landwirtschaft Frauen die Manner ersetzen, die nicht mehr in der Landwirtschaft tatig sind. Sie erscheinen in ihrer wettbewerbsorientierten Funktion (die eine Aus-nahme darstellt) nur durch ihre Teilnahme in selbstverwaltenden Genossenschaften. In der privaten Landwirtschaft stellen Frauen wieder einen Ersatz fur Manner, die in nichtlandwirtschaftlichen Berufen ar-beiten, dar. Die Arbeitskrafte auf sogenannten ‘Teilzeit’-Familien-bauernhofen sind eher weiblich, als auf den sogenannten ‘Vollzeit’-Bauernhofen. Bauerinnen erscheinen nur dann in ihrer Wett-bewerbsfunktion, wenn Entscheidungen, die sowohl Familienleben als auch Haushaltsinvestitionen betreffen, getroffen werden mussen, wah-rend Entscheidungen bezuglich der Produktion der Bauernhofe und bezuglich des Verkaufs landwirtschaftlicher Produkte von Mannern getroffen werden.