Atlas of electron content values observed at Urbana, Illinois, 1 December 1967 - 30 December 1970

Ionospheric electron content versus local time data deduced from Faraday rotation observations of ATS-III geostationary satellite signals at Urbana, Illinois are reported. The data are presented in two forms. Values of subionospheric latitude (SILAT) and subionospheric longitude (SILON) are in degrees north and degrees west, respectively. These are computed on the basis of 350 km for the mean ionospheric height, which value is also used for the calculation of the geometric-magnetic factor, required for the conversion of the measured Faraday rotation angle to electron content. Entries of zero for the electron content in the tables represent no data for those times

Brillouin Scattering Studies of La_{0.77}Ca_{0.23}MnO_3 Across Metal-Insulator Transition

Temperature-dependent Brillouin scattering studies have been carried out on La_{0.77}Ca_{0.23}MnO_3 across the paramagnetic insulator - ferromagnetic metal (I-M) transition. The spectra show a surface Rayleigh wave (SRW) and a high velocity pseudo surface acoustic wave (HVPSAW) besides bulk acoustic waves (BAW). The Brillouin shifts associated with SRW and HVPSAW show blue-shifts, where as the frequencies of the BAW decrease below the I-M transition temperature (T_C) of 230 K. These results can be understood based on the temperature dependence of the elastic constants. We also observe a central peak whose width is maximum at T_C.Comment: 7 pages, 8 figure

Dyeing of silk using Madhuca longifolia as natural dye source

The dried leaves of Madhuca longifolia has been evaluated for their potential as a source for natural dyeing of silk. Dye has been extracted under optimum conditions such as extraction pH (10), time (60 min) and temperature (95̊°C). The extracted dye has been applied on the silk fabrics and a range of shades are obtained using different methods with or without using mordants. It is found that mordants have a significant effect on the color of dyed silk fabrics. The dyed samples have been evaluated for color measurements and standard wash, light and rub fastness tests. The extracted dye is also tested for some of the eco-parameters using atomic absorption spectrophotometry and GC/MS. The test results are compared with set standards to determine the eco-friendliness of natural dye. Their concentrations are found to be lower than the stipulated limits. The dyed samples are also tested for antimicrobial activity against Gram-positive and Gram-negative bacteria. The dyed silk fabrics show acceptable fastness properties and are found to possess antibacterial activity. The results show that Madhuca longifolia leaves are promising as a natural colorant, which would, in turn, pave the way for the discovery of a new range of environment-friendly dyes for textile materials

Backscatter Inversion in Spherically Asymmetric Ionosphere

It is Well Known that Various Diurnal and Morphological Features of the Ionosphere Reveal Substantial Departures from the Normally Simplified Assumption of Spherical Symmetry at Certain Times of the Day or at Certain Geographic Locations. a Radio Ray Passing through Such an Ionosphere Must Bear Information About its Horizontal Gradients. the Leading Edge of a Backscatter Ionogram is Formed by Obliquely Propagated Radio Rays of Minimum Time Delay and Hence is Useful in Deducing Information About the Ionospheric Horizontal Gradients. in This Regard, the Ionospheric Electron Density Distribution is Modeled by a Locally Quasi‐parabolic Layer with Six Parameters. This Six‐parameter Space is Known as the \u27ion state.\u27 Our Object is to Seek the \u27best\u27 Ion state in the Sense that the Corresponding Mean Square Error in Group Delay is a Minimum. a Computer Program Has Been Written to Carry Out the Specified Procedure. a Number of Sample Calculations Are Presented and Discussed. Copyright 1979 by the American Geophysical Union

Dynamics of Working Conditions among Women Agricultural Workers

This paper examined the dynamics of wages, payment schedules, work availability, types of work, job satisfaction and problems faced by women agricultural workers in the rural areas of Puducherry, India. A mixed-method approach was employed and data from a random sample of 5,044 women agricultural workers across all 98 revenue villages in the rural areas of Union Territory of Puducherry were collected and analysed to provide a comprehensive understanding of the prevailing conditions and challenges. The findings indicated that almost half of the respondents earned the wages below 150 rupees per day, highlighting the prevalence of low wages. A majority of respondents faced lack of daily work availability. The study also explored the types of work performed by them, identified factors that contribute to people choosing to work in agriculture, such as the need to meet basic family needs, low family income, and issues including wage discrimination, low wages, hard work, lack of transport facilities and overworking hours

Isolation and cellular fatty acid profile analyzation of two marine bioluminescent bacteria

192-195Two luminescent bacterial strains KOOS1 and KOOS2 isolated from surface mucus of Octopus sp. collected from Andaman were identified by their cellular fatty acid composition analyzation with the help of Microbial Identification system (MIDI). SIM indexes obtained for these isolated strains were 0.772 (KOOS1) and 0.754 (KOOS2) respectively and were identified as Photobacterium damselae and Vibrio fischeri. Major fatty acids found in Photobacterium damselae were Saturated: Dodecanoic acid (C12:0), Tetradecanoic acid (C14:0), Pentadecanoic acid (C15:0), Hexadecanoic acid (C16:0), Heptadecanoic acid (C17:0) and Octadecanoic acid (C18:0); and Unsaturated: 3-hydroxy-9-methyl decanoic acid (C11:0iso 3OH), 3-hydroxydodecanoic(C12:0 3OH), C16:1ω5c, Oleic acid (C18:1ω9c) and C18:1ω5c.In Vibrio fischeri Saturated: C12:0, Tridecanoic acid (C13:0), C15:0, C16:0, C17:0 and C18:0; and Unsaturated: C11:0iso 3OH,2-hydroxydodecanoic (C12:0 2OH), C12:03OH, C13:0iso, C14:0iso, C15:0iso, C15:0anteiso, C16:0iso, C17:0iso, C16:1ω5c, C15:0iso3OH, C17:1 ω8c and C17:1ω6c were found. Cyclopropane acids have not been detected in both Photobacterium damselae and Vibrio fischeri

Generalized symmetric nonextensive thermostatistics and q-modified structures

We formulate a convenient generalization of the q-expectation value, based on the analogy of the symmetric quantum groups and q-calculus, and show that the q->q^{-1} symmetric nonextensive entropy preserves all of the mathematical structure of thermodynamics just as in the case of non-symmetric Tsallis statistics. Basic properties and analogies with quantum groups are discussed.Comment: 9 pages, 1 figure. To appear in Mod. Phys. Lett.

No Eigenvalue in Finite Quantum Electrodynamics

We re-examine Quantum Electrodynamics (QED) with massless electron as a finite quantum field theory as advocated by Gell-Mann-Low, Baker-Johnson, Adler, Jackiw and others. We analyze the Dyson-Schwinger equation satisfied by the massless electron in finite QED and conclude that the theory admits no nontrivial eigenvalue for the fine structure constant.Comment: 13 pages, Late

Use of cetylpyridinium chloride for the storage of sputum samples and isolation of M. tuberculosis

Of 220 sputum specimens collected from pulmonary tuberculosis patients, 85 were culture positive when the sputum aliquots were stored with cetypyridinium chloride (CPC) and processed on 7th day (CPC method), whereas only 70 were culture positive when the aliquots of the same specimens were stored without CPC and processed by sodium hydroxide (NaOH) method. The difference in the culture positivity was statistically significant. The number of positive, cultures obtained by the CPC method (85) was comparable to that obtained by the NaOH method before storage (95) and the difference was not statistically significant

Mycobacteriuria in pulmonary tuberculosis patients in Madras, South India

Three consecutive, entire, early morning urine specimens, collected from each of 137 bacteriologically confirmed pulmonary tuberculosis patients aged more than 12 years were processed for culture of M. tuberculosis by the usual centrifugation method. Of the 411 urine specimens, 5 yielded M. tuberculo- sis. About 50 ml each from 405 of the above specimens, from 135 patients, was also processed for culture by a filtration method and M. tuberculosis was isolated from only one of them. In all, mycobacteriuria was present in 5 (3.6%) of 137 patients (95% confidence inter- val being 1.2% to 8.4%). Of these patients, 92 had no history of previous chemotherapy and 3 (3.3%) excreted tubercle bacilli in Urine (95% confidence interval being 0.6% to 9.3%)