ELECTRICAL DISCHARGE MACHINING TRAITS OF ALUMINIUM METAL MATRIX COMPOSITES - A EVALUATION

Electrical Discharge Machining (EDM) is the system of machining electrically conductive substances via utilising precisely controlled sparks that arise between an electrode and the work piece within the presence of a dielectric fluid. Aluminium metallic Matrix Composites (AMMC’s) are new iteration engineering substances that possess sophisticated physical and mechanical homes in comparison with non-strengthened alloys. This makes them appealing for wider range of applications in automotive, aerospace and security industries. These substances have fascinating traits equivalent to high strength to weight ratio, high durability and low value of coefficient of thermal stability. It is extremely complex to reduce the elaborate shapes by means of utilising conventional Machining. High device put on and high rate of tooling is also a issue in traditional Machining, Unconventional Machining presents an alternative option to this difficulty. This paper offers a overview of study work done on AMMC’s on EDM, Wire EDM, Powder combined EDM, EDM in Water, Micro EDM. The paper additionally discusses the future traits of study work in the identical subject

STRUCTURAL AND THERMAL ANALYSIS OF VARIED METAL WELDING OF 1020 MILD METAL AND 304 STAINLESS STEEL

Joining of distinct metals has observed its use broadly in energy new release, electronic, nuclear reactors,petrochemical and chemical industries mostly to get tailor-made homes in a factor and reduction in weight. However efficient welding of distinctive metals has posed a major challenge due to difference in thermo-mechanical and chemical residences of the materials to be joined underneath a common welding situation. This factors a steep gradient of the thermo-mechanical houses alongside the weld. A kind of issues come up in distinctive welding like cracking, massive weld residual stresses, migration of atoms throughout welding causing stress awareness on one facet of the weld, compressive and tensile thermal stresses, stress corrosion cracking, and so forth. Weld residual stress and thermal stress had been analyzed for assorted steel welding of 304 stainless-steel to 1020 mild steel taking 302 stainless steel because the filler metallic. Similarly taking pressure developed as an index the susceptibility of the welded joint to stress corrosion cracking had been studied. It is found that once the filler steel is replaced by Inconel 625 significant growth is obtained within the welded joint in terms of discount in stress developed and stress corrosion cracking. Also the concern of carbon migration is eliminated by way of Inconel 625 as a weld filler metal because of the resistance of nickel-founded alloys to any carbon diffusion through them

VAYU PURIFIER

Air pollution is a major health hazard affecting the developing and developed countries alike. The effect of air pollution on health is complex and their individual impact varies from one to another. It is not only the ambient air quality in the cities but also the indoor air quality in the rural and urban area that are causing concern. In fact, in the developing world the highest air pollution explosion occurs in indoor environment. The main objective of our project is to reduce the air pollution. We live in a world where everything is transported by the use of vehicles, so it is necessary to have knowledge about vehicle pollution. But before that let us talk about pollution. Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants. Similarly, vehicle pollution is the introduction of harmful pollutants into the environment by motor vehicles.To overcome this, we present a solution which prevents pollutants in the air

Elucidating Mycotoxin-Producing Aspergillus Species in River Water: An Advanced Molecular Diagnostic Study for the Assessment of Ecological Health and Contamination Risk

The primary goal of this research is to isolate mycotoxin-producing fungus from the Nagavali River. Examining isolated fungi involved analyzing their mycelium growth on culture media and detailed microscopic inspection. We employed PCR analysis utilizing universal primers ITS1 and ITS4 to accurately identify the species. Furthermore, we sequenced the amplified ITS region and rigorously analyzed the sequences using NCBI-BLASTn and the ITS2 database. The analysis found a high 96.38% genetic similarity to the Aspergillus flavus strain, resulting in a 600-base pair fragment size. The sequence was given the accession number OR536222 in the NCBI GenBank database. Phylogenetic analysis was performed to ascertain the particular strain of A. flavus and its source. Remarkably, this analysis led to the identification of a single new strain gene, which represents a novel discovery in the field of fungal research. These results underscore the vital significance of molecular techniques in promptly and precisely identifying organisms. This research enhances our understanding of mycotoxin contamination in water, providing valuable insights to improve detection and prevention strategies. It accentuates the overarching importance of conserving our water resources and upholding ecological equilibrium, ultimately safeguarding the well-being of both humanity and the environment

Enhanced Humidity Sensing Response in Eu³⁺-Doped Iron-Rich CuFe₂O₄: A Detailed Study of Structural, Microstructural, Sensing, and Dielectric Properties

The CuFe(2−x)EuxO4 (where x = 0.00, 0.01, 0.02, 0.03) nanoparticles are synthesized by solution combustion method. The influence of Eu3+ on the structural, morphological, dielectrical, and humidity sensing study is recorded. The XRD pattern peaks of the as-prepared CuFe(2−x)EuxO4 (where x = 0.00, 0.01, 0.02, 0.03) nanoparticle confirm the polycrystalline spinel cubic structure with a small amount of CuO impurity phase at 38.87° and 48.96°. Surface morphology of the samples was studied by scanning electron microscope (SEM) images of the nanoparticles, and their respective average grain size was estimated using Image software. Chemical composition of all prepared samples was analyzed by EDS spectra. The dielectric parameters of AC conductivity, electric modulus, and impedance of the samples were measured over a range of frequencies from 0.1 KHz to 1 MHz at room temperature. Europium-doped copper ferrite samples showed good humidity sensing response, response and recover times, and stability over a %RH range of 11–91%. These types of samples are very useful for sensor application, battery applications, electronic applications, and automotive applications

HPLC-LIF for early detection of oral cancer

At present, the diagnosis of many cancers relies on the subjective interpretation of morphological changes in biopsy samples. This usually provides only late diagnosis. Early detection, which can provide more successful therapy, is expected to be possible by identification of tumour markers in physiological samples. Immunoassay used at present for this purpose has several drawbacks. It is applicable only for known markers, can usually detect only one marker at a time, and may also fail to detect a marker when there exist conditions, which may mask or prevent the interaction between antigen and the antibody. We have developed a high performance liquid chromatography- laser induced fluorescence (HPLC-LIF) technique to detect and record simultaneously spectra and chromatograms of physiological samples, which will enable the detection of multiple 'markers' in a single physiological sample in a short time. Samples of saliva and serum from normal and oral cancer subjects have been studied with the set up. The present studies show that body fluids like saliva and serum of normal, premalignant and malignant subjects have substantially different protein profiles. By simultaneous recording of the chromatographic peaks and corresponding fluorescence spectra, it is possible to carry out unambiguous discrimination between normal, premalignant and malignant cases even when markers are present in femto/subfemtomole quantities, which should assist in early diagnosis of neoplasia

An approach to determine crystalline content of Granisetron in transdermal patches using X-ray diffraction technique

Granisetron is a drug used to treat nausea and vomiting after chemotherapy. Crystallization of drug is always a major concern in the transdermal drug delivery system. In view of consistent biopharmaceutical performance, monitoring and controlling the crystallization during product development and shelf life is very important. The need was felt to have an accurate method for determination of crystallinity in transdermal patches.The present study is about development and validation of a quantitative X-ray diffraction method for the determination of the extent of crystallization of the drug in transdermal formulation of Granisetron. Specimens of different physically spiked concentrations were carefully prepared accurately by weighing and distributing crystalline active pharmaceutical ingredient (API) onto placebo liner patches, pasted on Silicon low background sample holder (diameter of 24.5 mm, made up of Si crystal). All the specimens thus prepared were scanned using optimized instrumental parameters while enabling specimen rotation during the diffraction analysis to ensure homogeneous exposure to the incident X-rays. Using this novel approach, limit of detection

Phytochemical Characterization, Antioxidant and Anti-Proliferative Properties of Rubia cordifolia L. Extracts Prepared with Improved Extraction Conditions

none11sìRubia cordifolia L. (Rubiaceae) is an important plant in Indian and Chinese medical systems. Extracts prepared from the root, stem and leaf have been used traditionally for the management of various diseases. Some of the known effects are anti-inflammation, neuroprotection, anti-proliferation, immunomodulation and anti-tumor. A comparative account of the extracts derived from different organs that lead to the identification of the most suitable solvent is lacking. We explored the presence of phytochemicals, antioxidant activity and anti-proliferative properties of a variety of solvent-based extracts of root, and methanol extracts of stem and leaf of R. cordifolia L. The antioxidant potential was determined by DPPH, hydrogen peroxide, nitric oxide and total antioxidant assays. The anti-proliferative nature was evaluated by MTT assay on HeLa, ME-180 and HepG2 cells. The composition of the extracts was determined by UPLC-UV-MS. We found that the root extracts had the presence of higher amounts of antioxidants over the stem and leaf extracts. The root extracts prepared in methanol exhibited the highest cytotoxicity in HepG2 cells. The main compounds identified through UPLC-UV-MS of the methanol extract give credibility to the previous results. Our comprehensive study corroborates the preference given to the root over the stem and leaf for extract preparation. In conclusion, we identified the methanol extract of the root to be the most suited to have bioactivity with anti-cancer potential.Humbare, Ravikiran B; Sarkar, Joyita; Kulkarni, Anjali A; Juwale, Mugdha G; Deshmukh, Sushil H; Amalnerkar, Dinesh; Chaskar, Manohar; Albertini, Maria C; Rocchi, Marco B L; Kamble, Swapnil C; Ramakrishna, SeeramHumbare, Ravikiran B; Sarkar, Joyita; Kulkarni, Anjali A; Juwale, Mugdha G; Deshmukh, Sushil H; Amalnerkar, Dinesh; Chaskar, Manohar; Albertini, Maria C; Rocchi, Marco B L; Kamble, Swapnil C; Ramakrishna, Seera

Inheritance studies on grain iron and zinc concentration and agronomic traits in sorghum [Sorghum bicolor (L.) Moench]

Sorghum is a major staple globally and biofortifying sorghum with increased grain iron and zinc complements ongoing efforts to combat micronutrient malnutrition. Limited information available on the nature and magnitude of gene effects for grain iron and zinc. So generation mean analysis was done using four crosses, ICSB 52 × IS 13211, ICSB 52 × SPV 1359, IS 20843 × IS 2248 and IS 2248 × IS 20843. Six generations, P1, P2, F1, F2, B1 and B2, were generated for each of these crosses which were evaluated during the postrainy season 2012–13. The mean sum of squares due to generations were significant for days to flowering, plant height, grain yield/plant, 100-grain weight, and grain Fe and Zn. Generation mean studies revealed the presence of both additive and dominant gene interactions in inheritance of agronomic traits. Duplicative epistasis was observed for days to flowering, plant height, grain yield/plant, 100-grain weight, and grain Zn with a predominance of dominant gene action in inheritance of these traits. Panicle length, panicle width, and grain Fe showed both additive and dominance gene effects, with higher magnitude of dominance. This information can be utilized in developing sorghum lines with high grain Fe and Zn

Fabrication of microchannels using polynorbornene photosensitive sacrificial materials

© 2003 The Electrochemical Society, Inc. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).A processing method has been demonstrated for the fabrication of microchannels using photosensitive polynorbornene copolymer based sacrificial materials. The channel geometric patterns of sacrificial polymer were made via photolithography. The sacrificial polymer patterns were encapsulated with a dielectric medium and then thermally decomposed to form air channels. For the thermal decomposition of sacrificial polymer, the heating program was determined on the basis of the kinetic model obtained from thermogravimetric analysis to maintain the decomposition at a constant rate. The results indicate that a properly selected heating program can avoid the deformation in the channel structure; at the same conditions, a large-size channel is more easily deformed than a small one. The tapered-structure microchannels were also produced using a gray-scale mask. The result shows that a suitably low contrast for the photosensitive sacrificial material can lead to smooth and tapered microchannels