Original Article - Microsurgical tubal recanalization: A hope for the hopeless

Objective: To analyse the various factors affecting pregnancy rate after microsurgical tubal recanalisation. Design: Prospective study, follow-up of 5 years in patients treated with tubal microsurgery. Setting: Referral Tertiary Care Hospital. Patients: Fifty women underwent microsurgical tubal recanalisation procedure. Principles of microsurgery were followed throughout the procedure meticulously. Interventions: Microsurgical tubal recanalisation. Main outcome measure: Pregnancy rate. Results: With microsurgery, an overall 60% pregnancy rate was achieved. In these patients, pregnancy outcome was in form of intrauterine pregnancy (96.66%), ectopic pregnancy (3.33%), term viable pregnancy (96.55%) and spontaneous abortion (3.45%). Conclusions: The important factors for determining the success of operation were age of the patient, time interval between sterilization and reversal, site of ligation, method used for previous ligation & the remaining length of the tube after recanalisation. The microsurgical technique should be available at specialized centres to improve the success of family planning services

Influence of Weather Parameters and Thermal Time Approach on Green Gram at Coimbatore, Tamil Nadu

An investigation was carried out at the Agro Climate Research Centre, Tamil Nadu Agricultural University, on the effect of weather parameters on the green gram yield sown at various sowing dates during the rabi season of 2019. At various sowing dates, two green gram cultivars, VBN 4 and ADT 3, were sown. For both cultivars, the phonological crop length decreased with delays in sowing dates beyond October 23rd. The yield of green gram sown on 23rd October was significantly higher than the crops sown on 30th October and 6th November. The weather parameters Maximum Temperature (Tmax), Diurnal Range (Trange), Bright Sunshine Hours (BSS), Relative Humidity (RH I), Wind Speed (WS) were found to be negatively correlated with seed yield whereas Minimum Temperature (Tmin), Relative Humidity (RH II), Vapour Pressure (VP) were found to be positively correlated with the yield of green gram. The accurate prediction of green gram yield could be done with the maximum temperature, bright sunshine hours, wind speed and with thermal indices especially hygrothermal unit II with 82 percent, accuracy level

An Integrated Effect of Weed Management in Blackgram

A field experiment was conducted at Wetlands farm, Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore during summer season (March-June) of 2023, to study the effect of different weed management practices on weed flora, weed growth and yield of summer irrigated blackgram (VBN11). The field experiment was laid out in Randomized Block Design with nine treatments and three replications. Treatments comprised of power operated weeder  at 15 DAS and 30 DAS with 40 × 7.5 cm and 45 × 7.5 cm plant spacing; pre-emergence application of  pendimethalin 30% EC @ 1 kg ha-1 fb (followed by) power operated weeder at 20 DAS with 40 × 7.5 cm and 45 × 7.5 cm plant spacing; pre-emergence application of pendimethalin 30% EC @1 kg ha-1 fb early post emergence application of Imazethapyr @ 100 g ha-1 + Quizalofop-ethyl @ 50 g ha-1 (Tank mix) at 20 DAS  with 40 × 7.5 cm plant spacing and 45 × 7.5 cm plant spacing; hand weeding at 20 DAS and 40 DAS with 30 × 10 cm plant spacing. The results revealed that among the various weed management practices, the weeds were effectively controlled by the pre-emergence application of pendimethalin 30 % EC @ 1 kg  ha-1fb power weeder at 20 DAS with 40 × 7.5 cm plant spacing with significantly lower weed density, higher Weed Control Efficiency and higher grain yield (881 kg ha-1)

Sustainable cement replacement using waste eggshells: A review on mechanical properties of eggshell concrete and strength prediction using artificial neural network

Though the European Commission classifies eggshell as a hazardous material, using eggshell powder in place of cement can aid in waste reduction and contribute to sustainability initiatives. Eggshell powder replaces cement in concrete manufacturing due to its high calcium content. Eggshell is impermeable in nature, so it helps in reducing the permeability of concrete. Eggshell powder fastens the process of hydration of cement by the formation of monocarboaluminate during the mixing of material at the time of casting. This paper includes a detailed study of the process production of eggshell powder, the properties of eggshell powder concrete, and the relationship between different properties has been determined. In addition, Artifical Neural Network approach has been used to predict the strength of eggshell powder concrete to reduce the labour cost and experimental time. In the end, microstructure of eggshell powder and its application in various engineering products have been reviewed. After analyzing the qualities of eggshell powder concrete, it was determined that replacing up to 20% of the cement in concrete with eggshell powder increases the material's strength. The ANN model's results also demonstrate its effectiveness in forecasting the strength of eggshell powder concrete, with an R2 value of 0.96. So, it clearly shows that eggshell powder can be used to replace cement to improve the properties of concrete and reduce the percentage of cement usage. Finally, the conclusions and discussion of this study addressed the eco-friendly utilization of eggshell powder in construction applications