Long wavelength ultraviolet photoproduction of amino acids on the primitive earth

Amino acids produced by long UV irradiation of gas mixtures using hydrogen sulfide as initial photon acceptor, simulating prebiological earth condition

Exobiology and the origin of life

Abstracts on planetary studies and the search for extraterrestrial life are presented. Studies of the Jovian atmosphere were conducted. An assessment of the prospects for life on Mars is presented. And, the the means of contacting extraterrestrial civilizations is discussed

On the temperature dependence of possible S8 infrared bands in planetary atmospheres

Measurements of the temperature dependence between 77 and 333 K of the infrared spectrum of cyclic octatomic sulfur are reported. It is suggested that the 23 micrometer Jovian feature is not due to 3 sub 8 and that the temperature dependence of the frequency of the 835/cm band of S sub 8 may be a useful temperature marker in planetary studies

Silver jubilee seminar on "Antarctic Science: Indian contributions in global perspectives" at Goa

Commemorating the silver jubilee year (2006) of India’s Antarctic Programmes, the National Centre for Antarctic and Ocean Research organized a two day seminar on “Antarctic Science: Indian Contributions in Global perspectives” at Goa during May 25-26, 2006. The Seminar was inaugurated on May 25, 2006 by the Chief Minister of Goa, Shri Pratap Singh Rane in the august presence of Dr. S.Z. Qasim, Former Member of Planning Commission and the Leader of the first Indian Antarctic

First 'OCEANIBSA' meeting during 14-16 September, 2005 at Angra-dos-Reis, Brazil

India, Brazil and South Africa (IBSA) have entered into science and technology cooperation especially to promote applications of science and technology for the benefit of common man. Oceanographic and Antarctic research have been identified as one of the areas under the Science and Technology cooperation. It is well known that India, Brazil and South Africa have been coming closer on several fronts with a collective benefit perspective. The India-Brazil- South Africa (IBSA) initiative includes strengthening and coordinating oceanographic and Antarctic activities as decided at the first meeting of IBSA Science and Technology Ministers (New Delhi, 2004), and further endorsed at the meeting of the IBSA Working Group on S&T (Cape Town, February, 2005)

Anti-isospectral Transformations, Orthogonal Polynomials and Quasi-Exactly Solvable Problems

We consider the double sinh-Gordon potential which is a quasi-exactly solvable problem and show that in this case one has two sets of Bender-Dunne orthogonal polynomials . We study in some detail the various properties of these polynomials and the corresponding quotient polynomials. In particular, we show that the weight functions for these polynomials are not always positive. We also study the orthogonal polynomials of the double sine-Gordon potential which is related to the double sinh-Gordon case by an anti-isospectral transformation. Finally we discover a new quasi-exactly solvable problem by making use of the anti-isospectral transformation.Comment: Revtex, 19 pages, No figur

Soliton Lattice and Single Soliton Solutions of the Associated Lam\'e and Lam\'e Potentials

We obtain the exact nontopological soliton lattice solutions of the Associated Lam\'e equation in different parameter regimes and compute the corresponding energy for each of these solutions. We show that in specific limits these solutions give rise to nontopological (pulse-like) single solitons, as well as to different types of topological (kink-like) single soliton solutions of the Associated Lam\'e equation. Following Manton, we also compute, as an illustration, the asymptotic interaction energy between these soliton solutions in one particular case. Finally, in specific limits, we deduce the soliton lattices, as well as the topological single soliton solutions of the Lam\'e equation, and also the sine-Gordon soliton solution.Comment: 23 pages, 5 figures. Submitted to J. Math. Phy

The Copper Smelter at Ghatsila

The layout of the plant descriptions and operations of the different equipment at the works of Mcssrs Indian Copper Corporation Ltd., Ghatsila,have been briefly described. The smelter treats froth-floated chalcopyrite concentrate containing 24-26 per cent Cu to produce a matte containing 40-42 per cent Cu. The conversion of the matte to blister copper in converters has been described.The refined copper contains 025 per cent Ni. The refining practice has been detailed

Truncated Harmonic Osillator and Parasupersymmetric Quantum Mechanics

We discuss in detail the parasupersymmetric quantum mechanics of arbitrary order where the parasupersymmetry is between the normal bosons and those corresponding to the truncated harmonic oscillator. We show that even though the parasusy algebra is different from that of the usual parasusy quantum mechanics, still the consequences of the two are identical. We further show that the parasupersymmetric quantum mechanics of arbitrary order p can also be rewritten in terms of p supercharges (i.e. all of which obey $Q_i^{2} = 0$). However, the Hamiltonian cannot be expressed in a simple form in terms of the p supercharges except in a special case. A model of conformal parasupersymmetry is also discussed and it is shown that in this case, the p supercharges, the p conformal supercharges along with Hamiltonian H, conformal generator K and dilatation generator D form a closed algebra.Comment: 9 page