INTERNATIONAL RESEARCH JOURNAL OF SCIENCE AND ENGINEERING

151-156

Authors: Rashmi Urkude

Pesticides have beneficial effect on agricultural productivity however, due to indiscriminate use, pesticides are routinely detected in environment and to some extent in food. Improvements in the delivery system of pesticides can enhance the bioefficacy and solve the problem of unintended environmental and human health consequences. In recent years, nanotechnology is used in the field of insect pest management in the form of nanoparticles. The enhanced efficacy of nanopesticides at low concentrations can benefit the farmers and reduce the pollution level in the environment. In this review, traditional strategies used for the management of insect pests and potential of nanomaterials in insect pest control as modern approaches of nanotechnology have been summarized.

101-104

Authors: Rashmi Urkude

Modern pesticide formulation technology aims to prolong shelf-life as much as possible so as to optimize the biological activity of the pesticide and to give a product which is safe and convenient for use. However, Pesticides in sealed containers may change over time if the active ingredient changes chemically or the formulation of the pesticide breaks down. Therefore, pesticide store should be inspected regularly for signs of deterioration. Since quality and performance is the major constraint faced by the users, commercially available and widely used emulsifiable concentrate (EC) formulations of bifenthrin (10 per cent) was assessed with (GC-FID) for technical grade content in storage on the shelf in farm store room for the period of 30 months. The per cent active ingredient (a.i.) for bifenthrin from 0 month to 30 months were found in the range between 10.17 and 10.46 per cent (Permissible tolerance limit as per BIS Specification is 9.50 to 10.50). Keeping in view the expiry period of 2 years, the tested formulation sample was found stable and unaffected during the storage.

81-91

Authors: Divya Ghildyal

Ghaziabad also known as gateway of Uttar Pradesh India, has its boundary adjacent to Delhi. It is one of the highly populated districts, with major source of water from Hindon river. Since Ghaziabad is home to many industries which discharge their waste into the river which has become highly polluted. Another major problem is the dumpage of sewage waste into the river resulting in high Fecal Coliforms. The aim of our study was to statistically analyse the data of water samples collected from April 2017 to April 2018, to find out the effect of seasonal variation of different parameters under study ie DO, BOD, Other forms of Coliform and Fecal Coliform. All parameters were analysed with standard methods as stated by APHA. No DO was reported in any season, levels of BOD, Fecal Coliforms and Other forms of coliforms were found too high, compared to the standards stated by UPPCB. Correlation Matrix and Regression Analysis found an approximately similar correlation between BOD and Fecal Coliform in summer and rainy season, but totally different results were obtained in winter season. Our study is one of the first approaches to judge the level of correlation between BOD and Coliforms for summer, rainy and winter season. The study highlights the major problem associated with industrial, sewage and other forms of waste being dumped in the river without any treatment which leads to oxygen depletion, a major requirement for survival of aquatic life in water. Since BOD levels partly reflect the degree of organic pollution associated with fecal sources in this river system, it is of great significance to observe the relationships of coliforms and BOD levels. The study in itself suggests that faecal coliform and total coliform vs BOD can be used as pollution indicator for further research work on water pollution.

47-50

Authors: Theng AD

FHS is either neglected or poorly considered as a problem until it shows severe appearance. Inadequate posture leads poor joint movements and may cause pain. Increased usage of smartphone is going to be a challenge of maintaining correct posture as concurrently there are increased reports of neck pains among small age groups. In present study we tried to establish a correlation between mobile usage time and craniovertebral angle. Total 60 PG students between age group 18-25 were participated in study. Mobile usage time and craniovertebral angle were measured in single blind study. Our results showed highly significant (p<0.001) correlation between mobile usage time with cranio-vertebral angle (CVA) leading musculoskeletal discomfort in the participants.

41-43

Authors: A. Shubham Banerjee, B. Arnab Jyoti Mandal and C. Sandipta Mondal

From the very first day of refrigerators stepping into the common people’s lives, they have been performing the noble task of preserving the food of fellow humans by storing them in a cold atmosphere. But, the conventional domestic refrigerators we use is only limited to storing food materials in a cold atmosphere irrespective of the temperature of the edible product. People tend to directly put in their food products into the cold atmosphere despite of keeping the temperature of the food itself in mind, which ultimately leads to a lot of chemical changes in the food product because of the abrupt temperature swift. Hence in our experiment, we have implemented a separate chamber attached to the domestic refrigerator with the help of Arduino UNO, Temperature Sensor, Servo Motor and a Ventilation Cooling Fan which saves one’s time and takes care of individual health meal by bringing the food stored, down to the room temperature in a natural way and then automatically shifts the food directly into the refrigerator.

47-49

Authors: Tamlurkar HL

Sewage water and industrial effluent samples were collected from selected point where they are used for irrigating the agricultural fields. The HCH-isomers were found to present in these waters while another organochlorine compound and DOT were absent. Amongst HCH- isomers, β-HCH was found higher in all samples.