Microcontroller-based solar tunnel dryer for sustainable drying in Northeast India

The growing world population necessitated enhanced food availability and reduced waste. Drying has been a popular technique for extending food storage for a long time since it minimizes volume and lowers moisture and enzymatic activity, reducing food loss. This project sought to create a microcontroller-driven solar tunnel dryer designed for the prevalent rainfall and elevated humidity conditions in Northeast India. The designed solar tunnel dryer is equipped with two DHT22 sensors that assess ambient humidity inside and outside the dryer, deciding whether to let airflow with the environment or isolate it. It controls fan operation based on real-time monitoring. The dryer has 12 trays on a six-tray structure that holds 100 kg of sliced turmeric in every batch. An additional tray with a load cell was provided to record turmeric weight during drying. Without any load, the maximum internal temperature exceeded the outside by 27.1°C, while the minimum internal humidity was 30% lower than external values. The turmeric was dried from an initial moisture content of 71.62% to less than 10% (wet basis) over 101 hours and 40 minutes (5 days) with 28.63 effective bright sunshine hours. The developed solar tunnel dryer's average efficiency was 19.20%, demonstrating its ability to dry turmeric in Meghalaya, India

Prevalence of Listeria monocytogenes, Yersinia enterocolitica, Staphylococcus aureus, and Salmonella enterica Typhimurium in meat and meat products using multiplex polymerase chain reaction

Aim: The objective of the study was to investigate the occurrence of Listeria monocytogenes, Yersinia enterocolitica, Staphylococcus aureus, and Salmonella enterica Typhimurium in meat and meat products using the multiplex polymerase chain reaction (PCR) method. Materials and Methods: The assay combined an enrichment step in tryptic soy broth with yeast extract formulated for the simultaneous growth of target pathogens, DNA isolation and multiplex PCR. A total of 1134 samples including beef (n=349), chicken (n=325), pork (n=310), chevon (n=50), and meat products (n=100) were collected from different parts of Kerala, India. All the samples were subjected to multiplex PCR analysis and culture-based detection for the four pathogens in parallel. Results: Overall occurrence of L. monocytogenes was 0.08 % by cultural method. However, no L. monocytogenes was obtained by multiplex PCR method. Yersinia enterocolitica was obtained from beef and pork samples. A high prevalence of S. aureus (46.7%) was found in all types of meat samples tested. None of the samples was positive for S. Typhimurium. Conclusion: Multiplex PCR assay used in this study can detect more than one pathogen simultaneously by amplifying more than one target gene in a single reaction, which can save time and labor cost

Effect of rubber ash on mechanical properties of Al6061 based hybrid FGMMC

Abstract The usage of rubber ash as a reinforcement material for aluminium composite has never been used, this work pertains to one such experimentation. In this work rubber ash and boron carbide in varying proportions to reinforce Aluminium based Hybrid functional grade metal matrix composite (FGMMC). The fabrication is done using the centrifugal casting method. The rubbish ash and B4C content are varied and the samples are tested to get the ratio with the optimal mechanical properties. The tensile strength of the Aluminium based Matrix Composites (AMC) seems to increase with an increase in % weight of rubber ash. Further analysis of the composite reveals that the B4C and rubber ash particles were evenly distributed in the AMC. This can be confirmed using SEM imaging. This work studies the usage of boron Carbide and rubber ash to reinforce the FGMMC by comparing its properties to conventional AMC’s. The mechanical properties along with the cost factor are weighed to arrive at a convincing solution.</jats:p

Effect of rubber ash on mechanical properties of Al6061 based hybrid FGMMC

The usage of rubber ash as a reinforcement material for aluminium composite has never been used, this work pertains to one such experimentation. In this work rubber ash and boron carbide in varying proportions to reinforce Aluminium based Hybrid functional grade metal matrix composite (FGMMC). The fabrication is done using the centrifugal casting method. The rubbish ash and B _4 C content are varied and the samples are tested to get the ratio with the optimal mechanical properties. The tensile strength of the Aluminium based Matrix Composites (AMC) seems to increase with an increase in % weight of rubber ash. Further analysis of the composite reveals that the B _4 C and rubber ash particles were evenly distributed in the AMC. This can be confirmed using SEM imaging. This work studies the usage of boron Carbide and rubber ash to reinforce the FGMMC by comparing its properties to conventional AMC’s. The mechanical properties along with the cost factor are weighed to arrive at a convincing solution

Self aided system in health care monitoring using IOT

The main aim of this paper is to develop long-range medical health care system and also helps us to monitor the patient’s body 24/7 by using IoT. This technology can track physiological indicators from the patient's body at regular intervals. Hospital staffs face severe difficulty when they are faced with the task of taking care of multiple patients simultaneously. Problems such as waiting in the queue, travelling time, moving patient, waiting for doctor etc. are some of the issues faced by the patients. During an emergency, the situation might get worse. Monitoring the critical patient 24/7 is very important for reducing life threatening risk. This paper has a significant impact on the health-care industry. Continuous and real-time structural health monitoring can help to reduce the risk of collapse and the consequences of potentially lethal scenarios. This system is responsible for collecting pulse, body temperature and heart bit from the patient’s body and send the data by using WIFI-Module. Biosensors interfaced with the micro controller will monitor patient’s vital health. If any of the sensor’s present threshold value is exceeded beneath, an alert will be sent to doctor and the patient’s caretaker.</jats:p

Self aided system in health care monitoring using IOT

The main aim of this paper is to develop long-range medical health care system and also helps us to monitor the patient’s body 24/7 by using IoT. This technology can track physiological indicators from the patient's body at regular intervals. Hospital staffs face severe difficulty when they are faced with the task of taking care of multiple patients simultaneously. Problems such as waiting in the queue, travelling time, moving patient, waiting for doctor etc. are some of the issues faced by the patients. During an emergency, the situation might get worse. Monitoring the critical patient 24/7 is very important for reducing life threatening risk. This paper has a significant impact on the health-care industry. Continuous and real-time structural health monitoring can help to reduce the risk of collapse and the consequences of potentially lethal scenarios. This system is responsible for collecting pulse, body temperature and heart bit from the patient’s body and send the data by using WIFI-Module. Biosensors interfaced with the micro controller will monitor patient’s vital health. If any of the sensor’s present threshold value is exceeded beneath, an alert will be sent to doctor and the patient’s caretaker