Publications by authors named "Dhiman I"

Biopriming seeds with beneficial bacteria has potential to enhance seed germination. Therefore, in this investigation, five sulphur-oxidizing bacterial cultures, viz., Pantoea dispersa SOB2, Bacillus velezensis SN06, Bacillus cereus SN20, Bacillus tropicus SN16, and Bacillus megaterium SN11, were evaluated for different plant growth-promoting traits and their impact on Vigna radiata L.

View Article and Find Full Text PDF

Adsorption in nanoporous materials is one strategy that can be used to store hydrogen at conditions of temperature and pressure that are economically viable. Adsorption capacity of nanoporous materials depends on surface area which can be enhanced by incorporating a hierarchical pore structure. We report grand canonical Monte Carlo (GCMC) simulation results on the adsorption of hydrogen in hierarchical models of silicalite that incorporate 4 nm wide mesopores in addition to the 0.

View Article and Find Full Text PDF

The low glass-forming ability of aluminium-based metallic glasses significantly limits their development and preparation. This paper updates the current state of knowledge by presenting the results of structural studies of two newly-developed AlNiFeY and AlNiFeY alloys with a reduced aluminium content (< 80 at.%).

View Article and Find Full Text PDF

Alternation in various properties of -alkanes (CH) as a function of carbon content () is termed 'odd-even effect'. Here, we report a comprehensive molecular dynamics simulation study on -alkane systems carried out with ranging between 3 (propane) and 8 (octane), examining the odd-even effect in melting point, density, intramolecular conformational ordering, translational and rotational motion. We observe an odd-even alternation in these properties, but with heptane ( = 7) exhibiting anomalous behavior for all except conformational ordering.

View Article and Find Full Text PDF

The aim of the study was to supplement the data on the AlCrFe alloy with binary phase structure and the AlCrFe alloy with multiphase structure prepared with two different cooling rates from the liquid state. The presence of the structurally complex AlCrFe phase was confirmed by neutron diffraction, scanning electron microscopy with the analysis of chemical composition and transmission electron microscopy. Additionally, the AlCr phase with γ-brass structure was identified for AlCrFe alloy in both cooling rates from the liquid state.

View Article and Find Full Text PDF

We study a single-channel dynamically disordered totally asymmetric simple exclusion process with bulk particle attachment and detachment. The continuum mean-field equations are derived and solved numerically to obtain steady-state phase diagrams and density profiles. The effects of various parameters, namely particle attachment rate, defect binding and unbinding rates, and binding constant, have been investigated.

View Article and Find Full Text PDF

The polarized neutron imaging technique provides a non-invasive method of characterizing localized magnetic fields inside superconductors. However, complete understanding of the magnetic field distribution has yet to be realized experimentally due to the complexity of the interaction between neutron polarization and magnetic field. In this article, we show that a well-defined and controlled magnetic field through the neutron path contributes to simplify the data analysis and makes future quantitative polarized neutron imaging possible.

View Article and Find Full Text PDF

We study the spontaneous crystallization of an assembly of highly monodisperse steel spheres under shaking, as it evolves from localized icosahedral ordering towards a packing reaching crystalline ordering. Towards this end, real space neutron tomography measurements on the granular assembly are carried out, as it is systematically subjected to a variation of frequency and amplitude. As expected, we see a presence of localized icosahedral ordering in the disordered initial state (packing fraction ≈ 0.

View Article and Find Full Text PDF

In the present study, we report a new setup for polarized neutron imaging at the ORNL High Flux Isotope Reactor CG-1D beamline using an in situ He polarizer and analyzer. This development is very important for extending the capabilities of the imaging instrument at ORNL providing a polarized beam with a large field-of-view, which can be further used in combination with optical devices like Wolter optics, focusing guides, or other lenses for the development of microscope arrangement. Such a setup can be of advantage for the existing and future imaging beamlines at the pulsed neutron sources.

View Article and Find Full Text PDF

Purpose: The aim of our study was to analyze the epidemiological profile and outcome of steroid-induced ocular hypertension in children below 12 years of age in a tertiary eye center.

Methods: Hospital records of patients attending the pediatric glaucoma clinic from July 2005 to December 2012 at our center were retrospectively reviewed. Steroid-induced ocular hypertension was defined as intraocular pressures (IOP)>21 mm Hg (or an increase of>6 mm from baseline) with or without associated glaucomatous optic neuropathy after intake of steroids in any form.

View Article and Find Full Text PDF

We use boundary layer analysis for an open system consisting of two parallel totally asymmetric simple exclusion processes with Langmuir kinetics under a biased lane-changing rule. The two kinds of phase transitions--bulk transitions and surface transitions--have been examined. The dynamics of shock and their dependence on the system parameters have been investigated.

View Article and Find Full Text PDF

We analyze an open system comprised of two parallel totally asymmetric simple exclusion processes with particle attachment and detachment in the bulk under partially asymmetric coupling conditions. The phase diagrams are obtained using boundary layer analysis of continuum mean-field equations and characterized for different values of lane-changing rates. The structure of the phase diagram remains qualitatively the same as the one in fully asymmetric coupling conditions up to a certain critical order of lane-changing rates, after which significant changes are found in the phase diagram.

View Article and Find Full Text PDF

Aim: The mechanical properties and compaction characteristics of different varieties of Assam Bora rice flours (ABRFs) were evaluated and compared with those of official Starch 1500®.

Methods: The material properties and compression characteristics of Assam Bora rice flours were studied by Heckel and Kawakita analysis. The influences of physical and geometrical properties of ABRFs were evaluated with regard to their compression properties.

View Article and Find Full Text PDF

We have investigated the influence of B-site doping on the crystal and magnetic structure in La(0.5)Ca(0.5)Mn(1 - x)B(x)O(3) (B = Fe, Ru, Al and Ga) compounds using neutron diffraction, small angle neutron scattering, magnetization and resistivity techniques.

View Article and Find Full Text PDF

We report a structural, magnetic and transport study in La(0.5)Ca(0.5-x)Ba(x)MnO(3) (0 View Article and Find Full Text PDF