Search Results - (Author, Cooperation:Shashikala)

1089-7550

AIP Digital Archive

Physics

Heavy fermion itinerant antiferromagnetic UNiAl is one of the very few U-containing compounds which absorbs H2/D2 without disproportionation. The present neutron diffraction studies on UNiAlDy (y=2.2) are directed towards resolving controversies with regard to the occupancy of Ni atoms and the associated interstitial sites for (H/D) atoms, as well as the nature of magnetic ordering in the higher hydride phase with y≥2. The fit to the neutron diffraction data is found to improve considerably if the Ni atoms originally lying in the U-atoms' plane in UNiAl get shifted to the Ni–Al atoms' plane in the deuteride. This is in agreement with an earlier neutron diffraction report on a deuteride sample of similar composition [T. Yamamoto et al., J. Alloys Compd. 269, 162 (1998)] and our x-ray structural studies on UNiAlH2.3 [P. Raj et al., Phys. Rev. B 63, 94414 (2001)], but differs from those of Bordallo et al., [H. N. Bordallo et al., Physica B 276–278, 706 (2000)] and of Kolomiets et al. [A. V. Kolomiets et al., J. Appl. Phys. 87, 6815 (2000)]. Our values of the structural parameters including the D-site occupancies are broadly in agreement with the results of Yamamoto et al. The magnetization studies on UNiAlD2.2 show a single antiferromagnetic transition with Néel temperature, TN=95 K. © 2001 American Institute of Physics.

Electronic Resource

1550-7408

Blackwell Publishing Journal Backfiles 1879-2005

Biology

Following conjugation of the hypotrichous ciliate Euplotes aediculatus, the posterior fragments of the old (prezygotic) macronucleus persist until after the first vegetative division. These fragments remain viable during exconjugant development as shown by their ability to regenerate should the cell's new macronucleus be damaged. It thus seemed possible that these parental nuclear fragments might participate in the development of the new macronucleus and/or the crucial post-conjugant cortical reorganization that restores the exconjugant cell's ability to feed. This idea was tested by damaging the posterior fragments with various doses of microbeam ultraviolet (UV) light and assessing the results of such treatment on subsequent cortical and nuclear development. When the posterior fragments of the macronucleus were irradiated at the beginning of cortical morphogenesis, the new macronucleus in 1/3 to 1/2 of the cells assumed a “folded” appearance but did not mature. These cells did not undergo cortical reorganization. Cells irradiated at earlier stages did not detectably develop an oral apparatus; their new macronucleus remained arrested at the spherical anlage stage. The results show that the posterior fragments of the parental macronucleus are necessary for normal nuclear and cortical development. These old nuclear fragments appear to influence the growing macronuclear anlage directly and probably the cortex as well. There also appears to be an information flow from the non-irradiated partner of a persistently joined exconjugant doublet to its irradiated counterpart, enabling normal anlage and cortex development in the irradiated cell.

Electronic Resource

1745-4557

Blackwell Publishing Journal Backfiles 1879-2005

Process Engineering, Biotechnology, Nutrition Technology

Physicochemical and sensory characteristics of cowpea papads were determined and compared with the blackgram papads. Dough making, rolling properties and physical appearance were similar in both the papads. Cowpea papads were rated to be highly acceptable by both trained and untrained panels. Proximate composition of all the papads was similar. Varietal differences of cowpea did not affect the quality characteristics of the papads. The results reveal that cowpea flour has all the desirable functional properties for making papads; hence cowpea flour makes an excellent raw material for the papad industry.

Electronic Resource

1365-4632

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Background  Basidiobolomycosis is a rare chronic subcutaneous infection caused by Basidiobolus ranarum, which is usually treated with potassium iodide. Extensive deforming lesions in children can occur owing to lack of early diagnosis and/or inappropriate treatment.Case report  An 8-year-old girl child presented to us with extensive deforming plaque-like lesions over the left thigh and leg with multiple ulcerations of 1 year's duration. Histopathology was suggestive of subcutaneous zygomycosis with Splendore Hoeppli phenomenon. Microscopic examination of the tissue showed branching, sparsely septate fungal hyphae on a 10%KOH mount, and culture yielded Basidiobolus ranarum. The patient was initially treated with potassium iodide for 6 weeks to which only a poor response was observed. Itraconazole therapy resulted in rapid regression of the lesions and complete resolution after 15 weeks of therapy. She continues to be disease-free at 1 year of follow up.Conclusions This case report highlights that in an older child even longstanding extensive basidiobolomycosis can be safely treated with itraconazole. Surgery is not usually necessary in these patients.

Electronic Resource

1095-8649

Blackwell Publishing Journal Backfiles 1879-2005

Biology

Colisa fasciatus, a freshwater teleost, were exposed for 90-h to 15 mg l−1 (0.79 of the96-h LC50 value) lead nitrate under static test conditions. The treatment resulted in decreased (P≤ 0.001) erythrocyte counts, haematocrits and haemoglobin contents of the moribund fish. Toxicity of the metal was also characterized by significant (P〈0.001) acceleration in erythrocyte sedimentation rate, numerical increase in the number of immature erythrocytes in circulation, lysis and degeneration of erythrocytes, and an increase in the hepatosomatic index. Leucocyte and thrombocyte counts, the number of lymphocytes, and blood clotting times were not significantly different between experimental and control fish. Haemolytic anaemia and an overt increase of circulating immature erythrocytes can be used in monitoring lead poisoning in fish.

Electronic Resource

0022-3697

Lithium cesium sulphate ; Raman scattering ; amorphization ; high pressure ; phase transitions

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Physics

Electronic Resource

0022-3697

Ferroelectricity ; Raman spectra ; frequency ; hydrogen bond ; line width ; phase transition

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Physics

Electronic Resource

0009-2614

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Physics

Electronic Resource

0009-2614

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Physics

Electronic Resource

1432-0800

Springer Online Journal Archives 1860-2000

Energy, Environment Protection, Nuclear Power Engineering

Medicine

Electronic Resource

1573-4811

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Electronic Resource

1573-4811

Springer Online Journal Archives 1860-2000

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Electronic Resource

0377-0486

Chemistry ; Analytical Chemistry and Spectroscopy

Wiley InterScience Backfile Collection 1832-2000

Chemistry and Pharmacology

Physics

Tellurc acid ammonium phosphate (TAAP) is a new class m ferroelectric with a transition temperature of 45°C. Structural data and preliminary spectroscopic studies confirmed the presence of N—H…O hydrogen bonds. Raman spectroscopic studies on this crystal were carried out in the temperature range 20-80 °C to look for possible spectral changes as a result of phase transition. A detailed analysis of the line width and frequencies was carried out across the phase transition in order to understand the nature of the phase transition. From the spectral features of the bands in different regions it is inferred that the groups TeO6, PO4 and NH4 do not undergo changes that could trigger the phase transition. On the other hand, the broadening of the bands in the range 2600-3400 cm-1 suggests the possibility of an order-disorder type of transition phenomenon involving hydrogen bonds. This is further supported by the shift of the transition temperature from 45 to 87°C on deuteration.

10 Ill.

Electronic Resource

0377-0486

Chemistry ; Analytical Chemistry and Spectroscopy

Wiley InterScience Backfile Collection 1832-2000

Chemistry and Pharmacology

Physics

Room-temperature Raman spectra of LiRbSO4 were studied as a function of pressure up to 170 kbar for two different orientations of the crystal. Four pressure-induced phase transitions at about 2, 17, 32 and 57 kbar were observed. The transitions at 17 and 57 kbar have slow kinetics, taking about 4 h for their completion. These phase transitions are associated with the orientations of the SO4 ions in the unit cell.

5 Ill.

Electronic Resource

article

1993

Kindheit ; Familie ; Schule ; Schuljahr 05 ; Schuljahr 06 ; Grundschule ; Unterrichtseinheit ; Unterrichtsmaterial ; Geografieunterricht ; Alltag ; Freizeit ; Indien

Geographie heute, Bd. 14 (1993) H. 108, S. 10-14, 0721-8400

German

Literaturangaben

2018-03-06

Molecular Diversity Preservation International (MDPI)

2073-4425

Biology

2018-04-06

Institute of Physics (IOP)

1757-8981

1757-899X

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

2018-04-06

Institute of Physics (IOP)

1757-8981

1757-899X

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

2018-04-06

Institute of Physics (IOP)

1757-8981

1757-899X

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

2018-02-01

Wiley-Blackwell

0091-7419

Biology

Chemistry and Pharmacology

Medicine