Skip to main content

25 Result(s)

within P. S. Goyal Remove this filter

previous disabled Page of 2
and

  1. No Access

    Article

    Magnetic properties of Fe3O4 nanoparticles having several different coatings

    Fe3O4 is a magnetic material (ferrimagnet at room temperature), and its nanoparticles find wide applications in industry and biotechnology. In general, they are coated with suitable organic material to avoid thei...

    Bhakti Hirani, P S Goyal, Swapnil S Sagare… in Bulletin of Materials Science (2023)

  2. No Access

    Article

    Structural and Magnetic Properties of Fe-Doped Mn2O3 Orthorhombic Bixbyite

    There is renewed interest in non-perovskite AB O3-type compounds owing to various functional properties such as catalysts, cathode material, and luminescence. The bixbyite compounds have been the subject of inten...

    R. Nikam, S. Rayaprol, P. S. Goyal… in Journal of Superconductivity and Novel Mag… (2018)

  3. No Access

    Article

    Small angle neutron scattering study of mixed micelles of oppositely charged surfactants

    Structures of mixed micelles of oppositely charged surfactants dodecyltrimethylammonium bromide (DTAB) and sodium dodecyl sulphate (SDS) have been studied using small angle neutron scattering. The concentratio...

    J. V. Joshi, V. K. Aswal, P. S. Goyal in Pramana (2008)

  4. No Access

    Article

    A high resolution powder diffractometer using focusing optics

    In this paper, we describe the design, construction and performance of a new high resolution neutron powder diffractometer that has been installed at the Dhruva reactor, Trombay, India. The instrument employs ...

    V. Siruguri, P. D. Babu, M. Gupta, A. V. Pimpale, P. S. Goyal in Pramana (2008)

  5. No Access

    Article

    Conductivity studies of lithium zinc silicate glasses with varying lithium contents

    The electrical conductivity of lithium zinc silicate (LZS) glasses with composition, (SiO2)0.527 (Na2O)0.054(B2O3)0.05(P2O5)0.029(ZnO)0.34−x (Li2O) x (x ...

    S. K. Deshpande, V. K. Shrikhande, M. S. Jogad… in Bulletin of Materials Science (2007)

  6. No Access

    Article

    Small-angle neutron scattering studies on water soluble complexes of poly(ethylene glycol)-based cationic random copolymer and SDS

    The interaction of cationic random copolymers of methoxy poly(ethylene glycol) monomethacrylate and (3-(methacryloylamino)propyl) trimethylammonium chloride with oppositely charged surfactant, sodium dodecyl s...

    C. K. Nisha, Sunkara V. Manorama, Souvik Maiti, K. N. Jayachandran, V. K. Aswald… in Pramana (2004)

  7. No Access

    Article

    Small-angle neutron scattering study of aggregate structures of multi-headed pyridinium surfactants in aqueous solution

    The aggregate structures of a set of novel single-chain surfactants bearing one, two and three pyridinium headgroups have been studied using small-angle neutron scattering (SANS). It is found that the nature o...

    J. Haldar, V. K. Aswal, P. S. Goyal, S. Bhattacharya in Pramana (2004)

  8. No Access

    Article

    Small-angle neutron and dynamic light scattering study of gelatin coacervates

    The state of intermolecular aggregates and that of folded gelatin molecules could be characterized by dynamic laser light and small-angle neutron scattering experiments, which implied spontaneous segregation o...

    B. Mohanty, V. K. Aswal, P. S. Goyal, H. B. Bohidar in Pramana (2004)

  9. No Access

    Article

    Temperature dependent small-angle neutron scattering of CTABr—magnetic fluid emulsion

    Small-angle neutron scattering studies have been carried out to check the structural integrity of citryltrimethylammonium bromide (CTABr) micelles in a magnetic fluid for different magnetic fluid concentration...

    V. K. Aswal, J. V. Joshi, P. S. Goyal, Rajesh Patel, R. V. Upadhyay, R. V. Mehta in Pramana (2004)

  10. No Access

    Article

    Small-angle neutron scattering studies of nonionic surfactant: Effect of sugars

    Micellar solution of nonionic surfactantn-dodecyloligo ethyleneoxide surfactant, decaoxyethylene monododecyl ether [CH3(CH2)11(OCH2CH2)10OH], C12E10 in D2O solution have been analysed by small-angle neutron scatt...

    K. Shivaji Sharma, J. V. Joshi, V. K. Aswal, P. S. Goyal, A. K. Rakshit in Pramana (2004)

  11. No Access

    Article

    Counterion condensation in ionic micelles as studied by a combined use of SANS and SAXS

    We report a combined use of small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS) to the study of counterion condensation in ionic micelles. Small-angle neutron and X-ray scattering mea...

    V. K. Aswal, P. S. Goyal, H. Amenitsch, S. Bernstorff in Pramana (2004)

  12. No Access

    Article

    Small-angle neutron scattering studies of sodium butyl benzene sulfonate aggregates in aqueous solution

    The aggregation behaviour of a hydrotrope, sodiumn-butyl benzene sulfonate (Na-NBBS), in aqueous solutions is investigated by small-angle neutron scattering (SANS). Nearly ellipsoidal aggregates of Na-NBBS at con...

    O. R. Pal, V. G. Gaikar, J. V. Joshi, P. S. Goyal, V. K. Aswal in Pramana (2004)

  13. No Access

    Article

    Role of IUC-DAEF in promoting neutron beam research in India

    Inter University Consortium for Department of Atomic Energy Facilities (IUC-DAEF) is an autonomous institute of the University Grants Commission and provides an interface between the university fraternity and ...

    P. S. Goyal in Pramana (2004)

  14. No Access

    Article

    Small-angle neutron scattering from micellar solutions

    Micellar solutions are the suspension of the colloidal aggregates of the sur-factant molecules in aqueous solutions. The structure (shape and size) and the interaction of these aggregates, referred to as micel...

    V. K. Aswal, P. S. Goyal in Pramana (2004)

  15. No Access

    Article

    SANS study of micellar aggregation of multi-headed surfactants

    We report the aggregation properties of recently synthesised novel single-chain surfactants bearing one, two and three head groups. Small-angle neutron-scattering studies in aqueous solutions of these surfacta...

    V.K. Aswal, J. Haldar, P.S. Goyal, S. Bhattacharya in Applied Physics A (2002)

  16. No Access

    Article

    Small-angle neutron scattering study of sodium cholate and sodium deoxycholate interacting micelles in aqueous medium

    Small angle neutron scattering (SANS) measurements of D2O solutions (0.1 M) of sodium cholate (NaC) and sodium deoxycholate (NaDC) were carried out atT= 298 K. Under compositions very much above the critical mice...

    J Santhanalakshmi, G Shantha Lakshmi, V K Aswal, P S Goyal in Journal of Chemical Sciences (2001)

  17. No Access

    Article

    Small-angle neutron scattering study of the effect ofn-alkanols on interacting micelles

    Small-angle neutron scattering cross-section distributions of sodium dodecyl sulphate (SDS) and dodecyl trimethyl ammonium bromide (DTAB), each 0·3 M in D2O were obtained in the absence and presence of 0·1 M 1-pe...

    J Santhanalakshmi, P S Goyal, V K Aswal… in Proceedings / Indian Academy of Sciences (1999)

  18. No Access

    Article

    Small angle neutron scattering from micellar solutions of triton X-100

    Micellar solutions of non-ionic surfactant triton X-100 (8% by weight) show phase separation at cloud pointT cp ∼ 335 K. This paper reports results of small angle neutron scattering (SANS) experim...

    K Srinivasa Rao, P S Goyal, B A Dasannacharya, V K Kelkar, C Manohar… in Pramana (1991)

  19. No Access

    Chapter

    Surfactant Association: Recent Theoretical and Experimental Developments

    A theoretical model describing the association of ionic surfactants into rod-shaped micelles is combined with an approximate formula for the viscosity increase induced by rod-shaped aggregates. It is shown tha...

    H.-H. Kohler, J. Strnad, Paul J. Missel, A. Balerna, E. Bernieri… in Surfactants in Solution (1991)

  20. No Access

    Article

    Form-factors for different aggregation models of micelles

    Spherical micelles in ionic micellar solutions, often aggregate to form spherical, cylindrical or chain-like aggregates on addition of salt to the solution. It is known that the technique of small angle neutro...

    P S Goyal, K Srinivasa Rao, B A Dasannacharya, V K Kelkar in Pramana (1990)

previous disabled Page of 2