Empowerment of women for sustainable development

Empowerment of women for sustainable developmen

Hydraulic Jump in One-dimensional Flow

In the presence of viscosity the hydraulic jump in one dimension is seen to be a first-order transition. A scaling relation for the position of the jump has been determined by applying an averaging technique on the stationary hydrodynamic equations. This gives a linear height profile before the jump, as well as a clear dependence of the magnitude of the jump on the outer boundary condition. The importance of viscosity in the jump formation has been convincingly established, and its physical basis has been understood by a time-dependent analysis of the flow equations. In doing so, a very close correspondence has been revealed between a perturbation equation for the flow rate and the metric of an acoustic white hole. We finally provide experimental support for our heuristically developed theory.Comment: 17 Pages, 8 Figures, 1 Table. To appear in European Physical Journal

A randomized controlled trial to assess the efficacy of 12-hour magnesium sulphate therapy compared to 24-hour regimen on maternal outcome among patients with eclampsia admitted in a tertiary care centre

Background: Magnesium sulphate (MgSO4) is the most popular anti-convulsant drug for treatment of eclampsia. Pritchard regimen is the most widely used regime worldwide where maintenance dose of MgSO4 is administered for 24-hour after delivery or last fit (whichever is later). As the duration of MgSO4 therapy increases, the incidence of adverse effects also increases. Therefore, the present study has been conducted to compare the maternal outcome with decreased duration of MgSO4 therapy for 12-hour with that of 24 hours for patients with eclampsia. Methods: It was an experimental study which was performed as a single centered, open labelled hospital based randomized control trial. It was conducted for 2 years (December 2019 to November 2021) among the patients of eclampsia admitted at department of obstetrics and gynaecology, AGMC and GBPH. Results: No cases of recurrent seizures in either group with additional benefit of lesser adverse effect of toxicity of MgSO4 in the 12-hour group. Conclusions: In the present study, it has been seen that 12-hour MgSO4 maintenance therapy is as efficacious as standard 24 hours therapy in controlling seizure as there was no case of recurrent seizure in either group

Surface tension and instability in the acoustic white hole of a circular hydraulic jump

We impose a linearized Eulerian perturbation on a steady shallow radial outflow of a liquid (water), whose local pressure function includes both the hydrostatic and the Laplace pressure terms. The resulting wave equation bears the form of an acoustic metric. A dispersion relation, extracted from the wave equation, gives an instability due to surface tension and the cylindrical flow symmetry. Using the dispersion relation, we also derive three known relations that scale the radius of the circular hydraulic jump in the outflow. The first two relations are scaled by viscosity and gravity, with a capillarity-dependent crossover to the third relation, which is scaled by viscosity and surface tension. The perturbation as a high-frequency travelling acoustic wave, propagating radially inward against the bulk outflow, is blocked just outside the circular hydraulic jump. The amplitude of the wave also diverges here because of a singularity. The blocking is associated with surface tension, which renders the circular hydraulic jump an acoustic white hole.Comment: 6 pages, 1 figure, ReVTeX two-column forma

Static and dynamic aspects of transonicity in Bondi accretion

Transonicity in a spherically symmetric accreting system has been considered in both the stationary and the dynamic regimes. The stationary flow, set up as a dynamical system, has been shown to be greatly unstable to even the minutest possible deviation in the boundary condition for transonicity. With the help of a simple analytical model, and some numerical modelling, it has then been argued that the flow indeed becomes transonic and stable, when the evolution of the flow is followed through time. The time-dependent approach also shows that there is a remarkable closeness between an equation of motion for a perturbation in the flow, and the metric of an analog acoustic black hole.Comment: 13 pages, 7 figures, REVTeX. This article is an invited contribution to a special issue of the Indian Journal of Physics, dedicated to the revered memory of Prof. Amal Kumar Raychaudhur

A comparative evaluation of post placental intrauterine contraceptive device (IUCD) insertion between normal delivery and caesarean section

Background: Adverse maternal and perinatal outcomes are related to pregnancies spaced too closely together. Objective of present study was to compare the expulsion rate and complications between post placental IUCD insertion between caesarean section and vaginal delivery.Methods: This study was a prospective comparative study conducted in the department of Obstetrics and Gynecology, at Agartala Government Medical College over 1.5 Years (January 2016-June2017) All cases at term pregnancy delivering by caesarean section and vaginal delivery were divided into two different groups. Sample size of 105 in each group. Subjects recruited from-obstetrics OPD and casualty of Agartala Government Medical College (AGMC) and GB Pant Hospital expulsion rate and complications. Comparative evaluation of Expulsion rate and complications following post placental IUCD insertion between caesarean section and vaginal delivery at the end of six months, one year and one and half year.Results: There was no significant difference in either complications between the two groups (P value-.913) or outcomes (p value-.035). Expulsion rate 18.2% following vaginal delivery compared to those with intracaesarean insertion i.e 3.8%.Conclusions: The complications associated with postplacental Intrauterine device insertion is insignificant, still the awareness, acceptance and continuation are very low. Therefore Information, education Communication activity by the field workers must be enhanced to overcome this knowledge gap

Evaluation of female factors in infertility by diagnostic laparohysteroscopy in a tertiary health care centre

Background: The inability to conceive is one of the most distressing conditions for a couple. It not only makes the female incomplete but also the social taboos attached are phenomenal. The problem of infertility as long as the recorded history of mankind. Fertility in our culture stands for reproductivity, growth and continuity. Reproduction is one of the basic essential for the survival of a species.  Diagnostic laparoscopy & hysteroscopy have emerged as an accurate method of assessing, evaluating and treating infertility. Direct visualization of the abdominal and pelvic organs in laparohysteroscopy allows a definitive diagnosis to be made in many conditions where clinical examination and less invasive techniques such as ultrasound and hysterosalpingography fail to identify the problem.Methods: A prospective study was conducted in Department of Obstetrics and Gynaecology, AGMC& GBP Hospital Agartala. 50 infertile women suspected with pelvic (tubal, peritoneal, adnexal) and intrauterine (uterine polyp, septa, submucous fibroid, intrauterine adhesions) pathologies were included in the study for further evaluation and correlation of clinical findings with Laparohysteroscopy observations.Results: Out of 50 cases, 27 (54%) patients had primary infertility. While laparoscopy detected abnormalities in 60% of the cases, significant hysteroscopy findings were noted in 66% of cases. The most common laparoscopic abnormality was tubal (22%) ovarian and peritoneal (16%) in primary and secondary infertile patients respectively. On hysteroscopy, endometrial polyp (30%) was found as the commonest abnormality in both the groups.Conclusions: Laparoscopy and hysteroscopy are both diagnostic and therapeutic procedures. If pathology is discovered, it can often be treated simultaneously. Laparoscopy combined with hysteroscopy is the sole technique to have a direct view of the female reproductive tract and to find out the various causes of infertility