Transforming from plastic to environmentally friendly materials is essential for both human health and the protection of the environment. In this work, a modified jute fabric (MJF) laminated with electrospun recycled polyethylene terephthalate (rPET) nanofibers with silver nitrate (AgNO3) is presented. The purpose to apply the silver nitrate and rPET nanofiber mat is to enhance the performance properties of packaging materials like mechanical strength, thermal insulation, moisture resistance, and antibacterial properties. The jute fabric was pretreated with alkali to make it compatible with rPET electrospun nanofibers, which improved breathability with a diameter of 24.70 +/- 7.79 nm and an average area percentage of fiber-to-fiber gap 17.50%. According to mechanical testing, the final product, MJF with nanofiber coating of rPET (MJNF) sample, satisfied the properties of packaging materials with a breaking force of 15,566 N and an extension of 10.79% at break. Strong thermal stability was indicated by thermal testing, which revealed a radiant heat difference of 26.75 degrees C and thermal conductivity of 0.0607 W m-1K-1. Excellent water resistance, a crucial characteristic for food preservation, was revealed by moisture management testing. Food safety was improved by antibacterial testing, which showed inhibition zones of 20.2 mm and 18.4 mm against S. aureus and E. coli, respectively. rPET nanofibers were successfully incorporated, as confirmed by fourier-transform infrared spectroscopy (FTIR), and a homogeneous nanofiber network on the jute surface was shown by scanning electron microscopy (SEM). According to these findings, MJNF have promise for environmentally friendly packaging since they successfully solve environmental issues by utilizing both recycled materials and improved antibacterial properties.

[This corrects the article DOI: 10.1016/j.heliyon.2024.e35261.].

In this research, Aloe Vera Gel (AVG) was incorporated into Unsaturated Polyester Resin (UPR) with jute-cotton union fabric to fabricate partially biodegradable composites. These composites were fabricated using a hand lay-up technique and characterized using Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetry Analysis (TGA), thermal conductivity measurements, water absorption tests, degradation assessments, cracking tests, and Universal Testing Machine (UTM) analysis. The study found that increasing the percentage of AVG in the composites led to a decrease in thermal conductivity, indicating improved insulation properties. Samples reinforced with AVG showed enhanced resistance to damage from iron nails, with reduced scratching and fiber displacement observed. However, the addition of AVG resulted in decreased thermal, mechanical, and water resistance properties compared to composites without AVG. FTIR analysis demonstrated interactions between AVG and the matrix materials. In degradation tests, composites subjected to an alkali environment (PH = 11.96) showed the highest weight reduction (2.22 %) compared to those without AVG. Similarly, composites buried in soil exhibited greater weight loss (2.38 %) than their counterparts lacking AVG. Overall, the developed composite's reduced heat transfer rate suggests its potential application as an insulating material in environments such as rural poultry housing and the automotive industry.

An investigation had been done to produce quality charcoal at different temperature ranges on a laboratory scale. A proximate analysis had been carried out to determine the percentage of moisture, volatile matter, ash, and fixed carbon in charcoal by standard methods. The jute sticks were carbonized at a range of 250oC to 750oC temperature in an electric muffle furnace. Higher yields, 40-45% were obtained at 250oC, and yields decline (8-10%) with increasing temperature up to 750oC. The yield of charcoal was calculated after the determination of moisture, where the average moisture of jute charcoal is about 9.88%. The carbon purity of jute charcoal is identified from FT-IR analysis. Thermogravimetric analysis revealed that thermal decomposition of the analyzed charcoal occurred in three main phases where the thermal decomposition of the charcoal occurred in the range of 340-550°C where the weight loss was 75% and the rest 1% of inorganic materials become ash.

The variation in the interior and exterior properties of jute fiber depends on harvesting time. But jute fibers to convert diversified products require certain qualities. The purpose of this study is to determine fiber yield and characterize the physico-chemical, thermal, and mechanical properties of jute fiber at different harvesting times. Field data were analyzed with the help of “Statistix 10” software, and assessment of jute fiber characterization at different harvesting times was done using chemical analysis, Stelometer, fiber fineness analysis system, photovolt meter, Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). According to the results, the maximum fiber yield (3.53 ton/ha) and whiteness or color lightness (40.76%) were obtained at 120 days of harvesting time. The strength (gm/tex) 51.05, diameter (μm) 34.13, and cellulose content (%) 65.58 of 60 days’ sample was good when compared to other days’ samples. FTIR assessment of the jute fiber reveals the presence of functional groups. The 105 days’ sample has highly thermal stability when compared to other samples. This research will be helpful to select proper raw jute fiber for its end users in potential variegated jute products.

This paper presents an experimental study on the thermal and mechanical properties of jute polyester composites. Jute polyester composites were fabricated with different thickness by reinforcing jute-cotton blended fabrics. The thermal conductivity, thermogravimetric analysis and water absorption test were conducted to evaluate their performance. MEKPO (methyl ethyl ketone per oxide) wt. %, nano-cellulose wt % and polyester resin (%) were optimized for the performance of jute polyester composites to be suitable for rural poultry housing. The best weight proportion of MEKPO (methyl ethyl ketone peroxide), nano-cellulose and composite thickness were found 1.5 wt.%, 6 wt.% and 3 mm respectively. It was revealed that composite fabricated with 60/40 jute/cotton blended fabrics exhibited the best performance in composite fabrication having thickness of 3 mm.

Bangladesh is located in the tropical area and it is blessed with enormous solar energy. The sun is up for most of the time of the year. Sunlight falls on solar photovoltaic modules and it is then converted into electricity. With the increase of photovoltaic grid-connected capacity, photovoltaic generation will bring many impacts on the distribution network. Besides, the rural area of Bangladesh is in great need of electricity. Most of the villages get less power than the demand thus resulting in blackout and continuous power cut. In this paper, first through a survey, the average demand of a village was estimated for summer and winter. Then how much power the area gets was measured and from the difference between supply and demand the energy required during grid failure was assessed. In this case, a grid connected photovoltaic system with a battery backup was proposed. Then a suitable system voltage and current were selected. The energy of the battery bank, capacity, and numbers were also determined.

16 www.ijeas.org  Abstract— Bangladesh is an agricultural country. One-third land of this country is in off-grid area which force farmers to use diesel for irrigation purpose. Several research works show that PV Solar technology is useful for irrigation system rather than conventional fossil fuels using various simulation software. But the ambiguities arise to select simulation software for techno-economic analysis. This study identifies the effectiveness of RE simulation software for techno-economic analysis and compare the benefits between PV Diesel and solar PV based water pumping system. The efficacy of mostly used RE simulation software will be analyzed to study financial feasibility of solar PV based water pumping system comparing to Diesel based system assuming a practical project in Bangladesh (a Bangladeshi farm named “Rajshahi Krishi Khamer”). This farm is now using Diesel based water pumping system for irrigation. Two contemporary and essential software, HOMER (Hybrid Optimization Model for Electric Renewable) and RETScreen are used to demonstrate the case studies. Some important issues about solar as well as Diesel based water pumping system are taken into consideration to accomplish this research work. The proposed studies also count the technical and environmental effects and eventually, address alternative sources of electric power generation.

Bangladesh is an agricultural country. One-third land of this country is in off-grid area which force farmers to use diesel for irrigation purpose. Several research works show that PV Solar technology is useful for irrigation system rather than conventional fossil fuels using various simulation software. But the ambiguities arise to select simulation software for techno-economic analysis. This study identifies the effectiveness of RE simulation software for techno-economic analysis and compare the benefits between PV Diesel and solar PV based water pumping system. The efficacy of mostly used RE simulation software will be analyzed to study financial feasibility of solar PV based water pumping system comparing to Diesel based system assuming a practical project in Bangladesh (a Bangladeshi farm named ldquoRajshahi Krishi Khamerrdquo). This farm is now using Diesel based water pumping system for irrigation. Two contemporary and essential software, HOMER (Hybrid Optimization Model for Electric Renewable) and RETScreen are used to demonstrate the case studies. Some important issues about solar as well as Diesel based water pumping system are taken into consideration to accomplish this research work. The proposed studies also count the technical and environmental effects and eventually, address alternative sources of electric power generation.

The impact of diabetes mellitus on the CNS (Central Nervous System) has gained attention only recently. Peripheral neuropathy has been the primary neuroscience focus of diabetes research. Contrary to some early impressions, however, the CNS is not spared by diabetes. Chronically, diabetes mellitus affects the CNS in several ways. Diabetes increases stroke risk and damage, overtreatment with insulin or oral agents can permanently damage the brain, and diabetes may increase the prevalence of seizure disorders. Diabetes changes brain transport, blood flow and metabolism, and may produce a chronic encephalopathy. Acutely, glycemic extremes cause coma, seizures, focal neurolclgical deficits, and impaired consciousness. The pathophysiological basis for these marked CNS abnormalities seen in hypoglycemia, hyperosmolar coma, and ketoacidosis are largely unknown.Methods: This review was based on a search of Pubmed, the NCBI Database of systemic Reviews, and citation lists of relevant publications. Subject heading and key words used central nervous system, diabetes mellitus, stroke, encephalopathy and hypoglycaemia. Only articles in English were included.J MEDICINE July 2017; 18 (2) : 109-112

Background and Objective: The jute fibre based composite materials have remarkable advantages of economic and environmental aspects such as low cost, low density, high strength to weight ratio and environmentally friendly.The study was focused on the composites that were prepared using unsaturated polyester as matrix and jute fibre as reinforcement by hand lay-up technique with the aim of the investigating the tensile, bending, thermal properties and water absorbency.Materials and Methods: Before fabrication of composites, jute fibres were treated with alkali and bleaching agent commonly known as combined scouring and bleaching.Composite of similar fashion was also prepared using untreated jute fibres.The composites were synthesized at 20:80 fibre-matrix weight percentages.The effect of chemical treatment was examined.The fractured surface morphology of the composites was investigated by Scanning Electron Microscopy (SEM) to comprehend the fibre-matrix interaction.The tensile, bending, thermal properties and water absorbency were studied and the results were graphically showed and explained.Results: The treated fibre composites showed higher tensile and bending strength than the untreated one.Both elastic modulus and bending modulus were also found to be higher for treated fibre composites.The treated fibres composites also exhibited lower thermal conductivity and higher thermal resistance.The untreated fibre composites become absorbent and significantly higher water absorption up to 300% and 200% than treated one in both 2 and 24 h water absorbency test.Conclusion: The behaviour of treated and untreated composites was explained by removing lignin and impurities from jute fibre that enhanced the better interaction between fibre and matrix.As natural fibres have very little resistance towards the environment, the manufactured composites can be the expedient application of biodegradable composites with auspicious physical properties.Furthermore, due to the simple manufacturing process, quicker processing time and lower manufacturing cost, the composites would be versatile material in the field of engineering and technology.

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