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M Nandy

Publications and source records attributed to M Nandy.

7 recordsLinked to original sources

Thick target neutron dose evaluation for 19F+Al system.

Measured angular distribution of neutron dose from 110 MeV (19)F projectiles bombarding a thick aluminium target is reported. The measurements are carried out with a commercially available rem meter at 0 degrees, 30 degrees, 60 degrees and 90 degrees. The experimental results are compared with calculated dose from different empirical formulations proposed by earlier workers as well as with calculated dose from theoretically estimated energy distributions from the nuclear reaction model code EMPIRE-2.18.

Algorithms↗

Growth hormone in turner syndrome.

We assessed the effect of one year of therapy with recombinant Human Growth Hormone (rhGH) on growth velocity of 16 Indian girls with Turner Syndrome (TS) in a prospective, open trial. Patients received rhGH in a dose of 1 IU (0.3 mg)/kg/week. The mean pretreatment height was 117.1 cms (Z score minus 3.4), height velocity was 3.8 cm per year (Z score minus 2.4), and predicted height was 140 cm. At the end of therapy mean height was 123.9 (Z score minus 3.1), height velocity was 6.7 cm per year (Z score + 1.7), and the predicted height was 142.4 cm. The increment in height velocity with growth hormone therapy was statistically significant (P value = 0.001) and the mean increment in predicted height was 2.4 cm. Our study shows that girls with TS in India benefit from therapy with rhGH.

Adolescent↗

Calculation of excitation functions of nuclides produced in proton induced reactions on NatSi.

Excitation functions of several nuclides from p+ NatSi reactions in the incident energy range of 20-110 MeV have been calculated using the hybrid model nuclear reaction code ALICE. Comparisons with experimental data have been made to select proper input options of the code. These data are useful to estimate possible damage in devices containing Si, from the bombardment of solar or accelerator produced protons.

Journal Article↗

Concepts in computation of preequilibrium neutron emission from heavy ion reactions.

Integral forms of the Boltzmann-like transport equations are derived to treat neutron emissions from heavy ion collisions. The derivations are based on the probability of contribution (score) from nucleon occupied phase space bins to the double differential emission spectra. Two-body interactions among the nucleons in "hot spot" and "cold spot" regions of the composite system resulting in creation, annihilation, or energy redistribution of the colliding particles are considered. The resulting equations are solved numerically in energy-angle bins to study thermal and kinematic equilibrium of the target + projectile (165Ho+20Ne) excited system at different projectile energies (10 MeV/A to 30 MeV/A).

Journal Article↗

Chemotherapy followed by radiotherapy versus radiotherapy alone in locally advanced cervical cancer: a randomized study.

Between August 1990 and January 1992, 184 patients with squamous cell carcinoma of the cervix, FIGO stage IIB-IVA, were randomized to receive either two cycles of bleomycin, ifosfamide-mesna, and cis-platinum (BIP) chemotherapy (CT) followed by radiotherapy (RT) ("CT-RT group," n = 94) or RT alone (RT group, n = 90). In the CT-RT group, of 89 evaluable patients, 64 responded: complete response (CR) 4 (4.5%) and partial response 60 (67.5%). Of the remaining 25 patients, 23 had stable disease and 2 progressed. Eighty of 89 patients completed RT as planned. Following RT 56 (70%) achieved CR, 19 (23.7%) had residual disease, and 5 (6.3%) had progressed. CT responders had a better response to RT: 83% (49/59) vs 33.3% (7/21), P < 0.01). The stage of disease, histologic grade, duration of symptoms, and history of smoking had no influence on the response to CT. Patients aged > 45 years and those with Hb > 10 g/dl had significantly better response. Nausea/vomiting, alopecia, grade I-II myelosuppression, diarrhea, and mucositis were the major side effects of CT. Two patients died of CT toxicity. In the RT group, 88 patients were evaluable: 61 (69.3%) patients achieved CR, 25 had residual disease, and 2 progressed. The side effects of RT were cystitis, proctitis, and local skin reaction. These were equally distributed between the two groups. There was no significant difference in overall and disease-free survival in the two groups.

Adult↗