http://nopr.niscpr.res.in/handle/123456789/62910 2026-10-09T20:08:54Z 2026-10-09T20:08:54Z Venakatachalapathi, Shyamala Shankararajan, Radha Ramany, Kiruthika http://nopr.niscpr.res.in/handle/123456789/62929 2023-12-13T10:48:20Z 2023-11-01T00:00:00Z

Title: Examining the Detection of Urea and Melamine as Adulterants in Milk and Milk Products Authors: Venakatachalapathi, Shyamala; Shankararajan, Radha; Ramany, Kiruthika Abstract: The modern research is required to identify adulterants in milk, as it is now being falsified in more complex ways. The study was conducted in response to contemporary concerns about natural milk being tampered with in order to boost its marketability. This study is developed as a “adulterant-based” survey that specifically evaluates melamine and urea in order to provide a clear assessment of qualitative detection methods exclusive to the specified adulterants. Numerous surveys of research on traditional detection approaches have been paired with an in-depth examination of contemporary advancement. This section discusses the basic notion of purposeful adulterant addition, its influence on human health, and the detection tools available to counteract the mass threat to human life. Page(s): 501-504

2023-11-01T00:00:00Z Gupta, Akash Nagdeve, Leeladhar Kumar, Harish Moona, Girija http://nopr.niscpr.res.in/handle/123456789/62928 2023-11-21T05:35:03Z 2023-11-01T00:00:00Z

Title: Performance Evaluation of WEDM process of EN 31 using Multiple Electrode Material Authors: Gupta, Akash; Nagdeve, Leeladhar; Kumar, Harish; Moona, Girija Abstract: EDM is a thermal erosive advanced machining process used to erode material through many small-duration, periodic electrical discharges and large current densities between the workpiece and wire. In the present research work, an effort is made to evaluate the performance of Wire-Electrical Discharge Machining (W-EDM) by machining EN 31 steel using different electrode wires, namely Copper and Brass. EN 31 has good mechanical and corrosive properties, so they are widely used in various fields such as automobile, aerospace, agriculture tool etc. Experiments were designed with the help of Taguchi by considering the parameters such as Electrode type (Copper and Brass), Discharge Current, Ton and Toff. Experiments have been conducted to optimize the WEDM machining parameters in order to achieve the maximum MRR with minimum SR. It has been found that electrode material and discharge current were the significant factors affecting MRR and SR, respectively. Study shows that brass electrode has a higher MRR when compared with the copper electrode material. Page(s): 505-513

2023-11-01T00:00:00Z N, Roshini Lobo, Nitin Prakash Kanth, Swarna V Mandal, Sujata http://nopr.niscpr.res.in/handle/123456789/62927 2023-11-21T05:34:37Z 2023-11-01T00:00:00Z

Title: Microstructural, Thermal, and Adsorption Properties of Zeolitic Imidazolate Framework-8 Synthesized by a Facile Method Authors: N, Roshini; Lobo, Nitin Prakash; Kanth, Swarna V; Mandal, Sujata Abstract: The objective of the present research work is to green and facile synthesis of zeolitic imidazolate framework-8 (ZIF-8) metal-organic framework (MOF). Series of ZIF-8 (ZMOFs) have been synthesized by a facile mixing method with varying amounts of methanol as the reaction medium. The volume of methanol has been reduced up to 75% with respect to the required volume reported in the literature. All the synthesized ZMOFs show the crystallographic phase and chemical structure of zeolitic imidazolate framework-8 (ZIF-8) with reasonably high thermal stability. The specific surface area of the synthesized ZMOFs lies between 1185-1325 m2g-1 and the pore volume between 0.51-0.56 cm3g-1. A decrease in the solvent volume results in a significant decrease in the product yield but has very little effect on the crystallinity, crystallographic phase, and pore characteristics of the synthesized ZMOFs. Page(s): 514-522

2023-11-01T00:00:00Z Sreekantan, Parvathi Geetha Ramana, Gunturi Venkata Nohawar, Pawan Singh http://nopr.niscpr.res.in/handle/123456789/62926 2023-11-21T05:34:19Z 2023-11-01T00:00:00Z

Title: Assessing the Flexural Characteristics of Geofoam using Digital Image Correlation Technique Authors: Sreekantan, Parvathi Geetha; Ramana, Gunturi Venkata; Nohawar, Pawan Singh Abstract: Geofoam is a popular lightweight fill material block used for the construction of road embankments over soft subsoils. The uneven load distribution and excessive settlement over such embankments can lead to differential stress distribution, leading to the bending of thin geofoam blocks. The assessment of geofoam's ability to withstand bending stresses is commonly conducted by evaluating its flexural strength, which also serves as an indicator of its bond strength resistance. In the present study, flexural characteristics of geofoams of varying densities ranging from 15 kg/m3 to 30 kg/m3 are assessed experimentally. Subsequently, a statistical assessment is conducted to analyse the variations in flexural strength and modulus and their potential relationship with geofoam density. A non-contact full-field strain measurement during the test is conducted using 2D-digital image correlation (DIC). This facilitated the evaluation of strain distribution within the geofoam during the testing. The observed DIC strains at the outer fibre matched precisely with the physically measured strain, validating the analysis method. It is observed that irrespective of the geofoam density; the EPS cell collapse occurred at a constant true strain value, i.e., 17%. Furthermore, it is also noted that more than 55% of the sample area experiences tensile strain during failure, whereas 45% is subjected to compressive strain. It is also determined that the ratio of the area under compression to tension at failure exhibited an increase in correlation with the density of the geofoam. Page(s): 523-529

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