Authors:Noémi Tarpataki, Kinga Pápa, J. Reiczigel, P. Vajdovich and K. Vörös
Medical records of 600 dogs diagnosed with atopic dermatitis were reviewed and evaluated with reference to history, geographical distribution, breed predilection, clinical signs and positive reactions to allergens as determined by intradermal skin testing (IDT) manufactured by Artuvetrin Laboratories**. In 66.6% of dogs, the age of onset of atopic dermatitis was between 4 months and 3 years. Dogs living in the garden suburb of Budapest were more sensitive to house dust mites, fleas and moulds, and dogs from the western part of Hungary were more sensitive to weeds than to other allergens (p < 0.01). Positive reactions were most common to Dermatophagoides farinae followed by human dander. The breed distribution found in the present study was consistent with that reported in the literature, except for the breeds Hungarian Vizsla, Pumi, French bulldog, Doberman Pinscher and Bobtail which were over-represented among atopic dogs compared to the breed distribution of the general dog population of a large city in Hungary. Breeds with verified adverse reaction to food were Cocker spaniels, French bulldogs, Bullmastiffs, Bull terriers, St. Bernards, Tervurens, West Highland White terriers and American Staffordshire terriers (p < 0.05). The clinical signs of atopic dermatitis and their occurrence are in accordance with the data described in the literature.
Authors:A. Vos, T. Müller, P. Schuster, T. Selhorst and U. Wenzel
The objective of the study was to examine possible maternally transferred antibodies (maAb) against rabies in raccoon dogs. Ten cubs born from a rabiesimmune animal were bled on days 31, 36, 43, 50, 57 and 64 post partum. The geometric mean titres of the cubs were 1.19, 1.18, 0.45, 0.25, 0.25 and 0.16 IU/ml, respectively. Up to 36 days post partum maAb were detected in all cubs at levels ≥ 0.5 IU/ml and at day 56 post partum all animals had maAb levels < 0.5 IU/ml. Based on the results of this study, it is suggested that vaccine baits should not be distributed before July if the vaccination campaign is aimed at immunizing young raccoon dogs as well.
Authors:P. Schuster, T. Müller, A. Vos, T. Selhorst, L. Neubert and E. Pommerening
A comparative study of immunogenicity and efficacy of the oral rabies virus vaccine SAD P5/88 in raccoon dogs and foxes was conducted. The raccoon dogs received 10 (n = 6), 106.3 (n = 6) or 105.7 FFU SAD P5/88 (n = 5) by direct oral application, and subsequently all animals seroconverted. The foxes received 107.2 (n = 4), 106.2 (n = 4), 105.2 (n = 4) and 104.2 FFU SAD P5/88 (n = 5) by the same route. On days 106 and 196 post vaccination 10 raccoon dogs and 16 foxes were challenged with a relevant street virus, respectively. All 10 raccoon dogs vaccinated with 106.3 (n = 5) or 105.7 FFU SAD P5/88 (n = 5) survived the challenge, whereas all control animals (n = 5) died of rabies. Two foxes vaccinated with 104.2 FFU and one fox vaccinated with 105.2 FFU died of rabies on day 7, 17 and 12 post infection, respectively. Also all control foxes succumbed to rabies. Our findings demonstrate that SAD P5/88 is not only an effective vaccine for oral vaccination of foxes but also for that of raccoon dogs.
Paulik and Erdey (Hungary) at a heating rate of 10 °C min −1 in air, in the temperature range of 20–1,000 °C with the sample weight of 100 mg. The IDT, T 10% , T 20% , T 50% of weight loss, final decomposition temperature (T k ) and temperature of the
The results of investigation of the degradation process of polystyrene brominated on the ring via an ionic route have been
presented. Using thermogravimetric (TG) and differential thermal analysis (DTA) methods, the course of degradation of polymer
samples with different bromine content has been described. Introducing of bromine on the aromatic ring influenced the initial
decomposition temperature (IDT) and the temperature corresponding to the maximum of decomposition rate (Tm).
The samples have been pyrolyzed at 300°C and some pyrolysis products were identified by means of gas chromatography/mass spectrometry.
Finally, the possible mechanism of degradation was presented.
Authors:N. Sharma, A. Sood, S. Bhatt and S. Chaudhry
The thermal decomposition of the complexes [Vcl (acac)2(OAr)] (where acac=2,4-pentanedionato anion; OAr=–OC6H4O-M-4, OC6H4OBut-4) has been studied using non-isothermal techniques (DTA and TG). The TGA indicate that the substitution of chlorine
in VCl2(acac)2 with aryloxide ligands results in an increase in the initial temperature of decomposition (IDT) of the new complexes. The role of the substituent at the aryloxide ring on the thermal stability of the complexes is depicted
and hence described. The ultimate decomposition product in all the complexes has been identified as V2O5. The kinetic and thermodynamic parameters namely, the energy of activation E, the frequency factor A, entropy of activation S and specific reaction rate constant kr etc. have been rationalized in relation to the bonding aspect of the aryloxide ligands.
Authors:X. Han, Y. Hu, Z. Lin, S. Li, F. Zhao, Z. Liu, J. Yi, L. Zhang and X. Ren
Effects of fullerenes including FS, EFS and pure C60 on thermal behaviors of polyethylene glycol (PEG) have been studied by employing thermogravimetry-differential thermogravimetry
(TG-DTG), differential scanning calorimeter (DSC) and off-line furnace-type pyrolysis-gas chromatography/mass spectrometry
(Py-GC/MS). The products were collected by Cambridge filter pad which was widely used in analyzing the combustion products
of cigarette. The results showed that the addition of fullerenes obviously restrained the thermal decomposition of PEG. The
initial decomposition temperatures (IDT) and maximum decomposition peak temperatures (MDT) were evidently postponed by the
addition of fullerenes. Pyrolysis products with one or two hydroxyl end groups obviously increased with the addition of 10%
C60. The reasons of the changes were discussed from the aspects of reaction mechanisms.
The influence of the structure of succinic or glutaric anhydride modified linear unsaturated (epoxy) polyesters on the course
of the cure reaction with styrene initiated by benzoyl peroxide (BPO) or the mixture of benzoyl peroxide/tetrahydrophthalic
anhydride (BPO/THPA) or benzoyl peroxide/maleic anhydride, as well as viscoelastic properties and thermal behavior of their
styrene copolymers have been studied by DSC, DMA, and TGA analyses. Additionally, mechanical properties: flexural properties
using three-point bending test and Brinell’s hardness for studied copolymers were evaluated. It was confirmed that the structure
of used polyesters had a considerable influence on the course of the cure reaction with styrene, viscoelastic, thermal, and
mechanical properties of prepared styrene copolymers. Generally, one or two asymmetrical peaks for the cure reaction of succinic
or glutaric anhydride modified linear unsaturated epoxy polyesters with styrene were observed. They were connected with various
cure reaction, e.g., copolymerization of carbon–carbon double bonds of polyester with styrene, thermal curing of epoxy groups,
polyaddition reaction of epoxy to anhydride groups in dependence of used curing system. In addition, only one asymmetrical,
exothermic peak attributed to the copolymerization process of succinic or glutaric anhydride modified linear unsaturated polyesters
with styrene was visible. Moreover, the obtained styrene copolymers based on succinic or glutaric anhydride modified linear
unsaturated epoxy polyesters were characterized by higher values of
, Tg, E″, νe, Emod, Fmax, hardness, IDT, FDT but lower ε − Fmax compared to those values observed for styrene copolymers prepared in the presence of succinic or glutaric anhydride modified
linear unsaturated polyesters. This supported to the production of stiffer and more thermally stable polymeric structure of
copolymers based on unsaturated epoxy polyesters. Moreover, the copolymers prepared in the use of glutaric anhydride modified
linear unsaturated (epoxy) polyesters were described by lower values of
, Tg, E″, νe, Emod, Fmax, hardness, IDT, FDT but higher ε − Fmax than those based on succinic anhydride modified linear unsaturated (epoxy) polyesters. The presence of longer aliphatic chain
length in polyester’s structure leads to produce more flexible network structure of styrene copolymers based on glutaric anhydride
modified linear unsaturated (epoxy) polyesters than those based on succinic anhydride modified linear unsaturated (epoxy)
Authors:S. Kalia, G. Kaushal, K. Lumba and Priyanka
The thermal decomposition studies on 4-methylpiperazine-1-carbodithioic acid ligand (4-MPipzcdtH) and its complexes, viz.
[M(4-MPipzcdtH)n](ClO4)n (M=Fe(III) when n=3; M=Co(II), Cu(II) when n=2) and [Zn(4-MPipzcdtH)2]Cl2 have been carried out using non-isothermal techniques (TG and DTA). Initial decomposition temperatures (IDT), indicate that
thermal stability is influenced by the change of central metal ion. Free acid ligand exhibits single stage decomposition with
a sharp DTA endotherm. Complexes, [M(4-MPipzcdtH)n](ClO4)n undergo single stage decomposition with detonation and give rise to very sharp exothermic DTA curves while the complex [Zn(4-MPipzcdtH)2]Cl2 shows three-stage decomposition patterns.
The kinetic and thermodynamic parameters, viz. the energy of activation E, the frequency factor A, entropy of activation S
and specific rate constant k, etc. have been evaluated from TG data using Coats and Redfern equation. Based upon the results
of the differential thermal analysis study, the [M(4-MPipzcdtH)n](ClO4)n complexes have been found to possess characteristic of high energy materials.