DESIGN AND ANALYSIS OF BUCKET ELAVATOR

Bucket elevators are the most used systems for vertical transport of bulk, dry, wet and even liquid materials. It is designed with various options of height, speed and constructive details depending on the type of material to be transported. The main aim of the project is to Design and Analyze elevator bucket using the two different materials. This can be achieved from finite element approach. For this a 3D model of bucket of elevator will be modeled using CATIA and analyzed using ANSY

INVESTIGATION OF MECHANICAL PROPERTY OF VARIOUS MIX DESIGN IN CONCRETE BY REPLACING FINE SAND WITH FOUNDRY SAND

Nowadays, concrete become most widely used material in construction. The demand of concrete increases day by day. Other way, Foundry sand is the byproduct of Ferrous and Non-Ferrous metal casting foundries where the river sand is used many times for the core and mould production with the binders. After a time these sand become unusual for the core production n called waste foundry sand. In this research paper, replacement of fine sand of concrete is done with the foundry sand, so the disposal problem related with the foundries have to be reduce so minor environmental issues create and the cost of concrete also reduced so with the increase in the strength of concrete by using foundry sand in it. Mix design of M30 and M25 were adopted for the replacement of fine sand. The fine sand has been replaced by foundry sand accordingly at replacement of 10%, 20% & 30% by weight for M-30 and M-25 Grade concrete. Concrete mixtures were produced, tested and compared in terms of different strength and different grade with the conventional concrete. Testing of these samples were carried out to calculate the Compressive strength for 7, 14 and 28 days. As a result, the compressive increased up to 20% addition of used foundry sand in M-30 grade and for M-25 the strength increment noticed at 1% replacement. This research work is anxious with experimental investigation on strength of concrete and optimum percentage of the partial replacement of foundry sand by replacing fine aggregate via 10%, 20%, and 30% with M30 and M-25 Grade. Keeping all this view, the aim of investigation is the behavior of concrete while adding of waste foundry sand with various proportions of various mix in concrete by replacing fine sand using tests on various strength

Process Development and Manufacturing of Tapping Tool using Friction Welding Technique

In today’s scenario, the main weightage of investigation is to reduce the cost of product while upholding its strength and efficiency. To solve problem in this regard manufacturing technologies play an important role. In this project decreasing the cost of cutting tool is considered. The prominence of the project is to reduce the overall cost of cutting tool (tap) while maintaining its properties and strength using the friction welding technique. The design issues for this study area unit stress and deflection. Materials used are H11 chromium hot work tool steel. In the present work tensile strength and hardness testing of produced blank is carried out in UTM and Vickers hardness testing machine. The results obtained from calculations, experimental study in static load condition. In this work an attempt of Cost reduction has been made by using friction welding technique

Child neurodevelopment after multidomain interventions from preconception through early childhood

ImportanceMultidomain interventions in pregnancy and early childhood have improved child neurodevelopment, but little is known about the effects of additional preconception interventions.ObjectiveTo evaluate the effect of a multifaceted approach including health; nutrition; water, sanitation, and hygiene (WASH); and psychosocial support interventions delivered during the preconception period and/or during pregnancy and early childhood on child neurodevelopment.Design, Setting, and ParticipantsIn this randomized trial involving low- and middle-income neighborhoods in Delhi, India, 13 500 participants were assigned to preconception interventions or routine care for the primary outcome of preterm births and childhood growth. Participants who became pregnant were randomized to pregnancy and early childhood interventions or routine care. Neurodevelopmental assessments, the trial’s secondary outcome reported herein, were conducted in a subsample of children at age 24 months, including 509 with preconception, pregnancy, and early childhood interventions; 473 with preconception interventions alone; 380 with pregnancy and early childhood interventions alone; and 350 with routine care. This study was conducted from November 1, 2020, through February 25, 2022.InterventionsHealth, nutrition, psychosocial care and support, and WASH interventions delivered during preconception, pregnancy, and early childhood periods.Main Outcomes and MeasuresCognitive, motor, language, and socioemotional performance at age 24 months, assessed using the Bayley Scales of Infant and Toddler Development 3 tool.ResultsThe mean age of participants at enrollment was 23.8 years (SD, 3.0 years). Compared with the controls at age 24 months, children in the preconception intervention groups had higher cognitive scores (mean difference [MD], 1.16; 98.3% CI, 0.18-2.13) but had similar language, motor, and socioemotional scores as controls. Those receiving pregnancy and early childhood interventions had higher cognitive (MD, 1.48; 98.3% CI, 0.49-2.46), language (MD, 2.29; 98.3% CI, 1.07-3.50), motor (MD, 1.53; 98.3% CI, 0.65-2.42), and socioemotional scores (MD, 4.15; 98.3% CI, 2.18-6.13) than did controls. The pregnancy and early childhood group also had lower incidence rate ratios (RRs) of moderate to severe delay in cognitive (incidence RR, 0.62; 98.3% CI, 0.40-0.96), language (incidence RR, 0.73; 98.3% CI, 0.57-0.93), and socioemotional (incidence RR, 0.49; 98.3% CI, 0.24-0.97) development than did those in the control group. Children in the preconception, pregnancy, and early childhood intervention group had higher cognitive (MD, 2.60; 98.3% CI, 1.08-4.12), language (MD, 3.46; 98.3% CI, 1.65-5.27), motor (MD, 2.31; 98.3% CI, 0.93-3.69), and socioemotional (MD, 5.55; 98.3% CI, 2.66-8.43) scores than did those in the control group.Conclusions and RelevanceMultidomain interventions during preconception, pregnancy and early childhood led to modest improvements in child neurodevelopment at 24 months. Such interventions for enhancing children’s development warrant further evaluation