Dissociation cross section for high energy O-O collisions.

Collision-induced dissociation cross section database for high energy O-O collisions (up to 30 eV) is generated and published using the quasiclassical trajectory method on the singlet, triplet, and quintet spin ground state O potential energy surfaces. At equilibrium conditions, these cross sections predict reaction rate coefficients that match those obtained experimentally. The main advantage of the cross section database based on ab initio computations is in the study of complex flows with high degree of non-equilibrium.

Global potential energy surface of ground state singlet spin O.

A new global potential energy for the singlet spin state O system is reported using CASPT2/aug-cc-pVTZ ab initio calculations. The geometries for the six-dimensional surface are constructed using a novel point generation scheme that employs randomly generated configurations based on the beta distribution. The advantage of this scheme is apparent in the reduction of the number of required geometries for a reasonably accurate potential energy surface (PES) and the consequent decrease in the overall computational effort.

An ab initio chemical reaction model for the direct simulation Monte Carlo study of non-equilibrium nitrogen flows.

A new ab initio based chemical model for a Direct Simulation Monte Carlo (DSMC) study suitable for simulating rarefied flows with a high degree of non-equilibrium is presented. To this end, Collision Induced Dissociation (CID) cross sections for N+N→N+2N are calculated and published using a global complete active space self-consistent field-complete active space second order perturbation theory N potential energy surface and quasi-classical trajectory algorithm for high energy collisions (up to 30 eV). CID cross sections are calculated for only a selected set of ro-vibrational combinations of the two nitrogen molecules, and a fitting scheme based on spectroscopic weights is presented to interpolate the CID cross section for all possible ro-vibrational combinations.

Dissociation cross sections for N + N → 3N and O + O → 3O using the QCT method.

Cross sections for the homo-nuclear atom-diatom collision induced dissociations (CIDs): N + N and O + O are calculated using Quasi-Classical Trajectory (QCT) method on ab initio Potential Energy Surfaces (PESs). A number of studies for these reactions carried out in the past focused on the CID cross section values generated using London-Eyring-Polanyi-Sato PES and seldom listed the CID cross section data. A highly accurate CASSCF-CASPT2 N and a new O global PES are used for the present QCT analysis and the CID cross section data up to 30 eV relative energy are also published.

Dietary diversification for prevention of anaemia among women of childbearing age from rural India.

Objective: To assess the impact of an intervention modifying dietary habits for the prevention of anaemia in rural India.

Design: Intervention study with data on anthropometric (weight, height) measurements, Hb and diet pattern. As per the cut-off for Hb in the government programme, women with Hb <11 g/dl had to be given Fe tablets and formed the supplemented group while those with Hb > 11 g/dl formed the non-supplemented group.

Social dimensions related to anaemia among women of childbearing age from rural India.

Objective: To examine various sociodemographic aspects related to consumption of micronutrient-rich foods like green leafy vegetables (GLV), which will be helpful in modifying dietary habits, a strategy that merits consideration for prevention of anaemia.

Design: Cross-sectional study for collecting data on socio-economic and anthropometric (weight, height) variables, Hb, dietary pattern (FFQ) and peripheral smear examination for classifying nutritional and iron-deficiency anaemia (IDA).

Setting: Three villages near Pune city, Maharashtra, India.

PEFR in pregnancy: a longitudinal study.

Peak expiratory flow rates (PEFR) were measured in 60 pregnant women aged 20-28 years (average 24 yrs) height between 130-160 cm (average 154.5 cm), each month beginning from 3rd month of gestation and also 8-10 weeks postpartum using, Wright's Peak Flow Meter. The PEFR declined from 329.

A longitudinal study of pulmonary function tests during pregnancy.

The study deals with evaluation of pulmonary function status in fifty normal pregnant women tested monthly. The parameters studied were Vital Capacity (VC) Forced Vital Capacity (FVC) and Forced Expiratory Volume in 1st second (FEV1) using Vitalograph Spirometer; tidal volume (VT), inspiratory capacity (IC) and expiratory reserve volume (ERV) using Expirograph and resting minute ventilation (VE) using Tissot's spirometer. Control values were obtained in the same subject 8-10 weeks after delivery.

Serum level of iron and transferrin in pregnancy and postpartum period.

This study presents a composite picture of haemoglobin (Hb), serum level of iron (SI), total iron binding capacity (TIBC) and percent iron saturation of transferrin in women during different trimesters of pregnancy and postpartum period. The results were correlated with age and parity. A total of 75 subjects, 15 from each trimester and 15 postpartal, were studied and compared with 15 nonpregnant normal subjects.