Studies on length-weight relationship of Gerres filamentosus Cuvier from the estuaries of the southern Karnataka coast

Random samples of Gerres filamentosus Cuvier from the Netravathi-Gurpur, Mulky, Kallayanapura, Mabukala and Kundapura estuaries of the southern Karnataka Coast were collected in the years 2000, 2001 and 2002, and length-weight relationships for each estuary were derived using multiple linear regression technique with one dummy variable. Hence, combined or sex-wise length-weight relationships were obtained after testing for homogeneity and isometric growth condition of fishes for each estuary by t-test. The extent of closeness of length-weight relationships between sexes and among estuaries for different years is explained by a trend line graph. The whole process of multiple linear regression analysis with one dummy variable is a better substitute for the analysis of covariance technique

Study of ZnO nanoparticle-supported clay minerals for electrochemical sensors, photocatalysis, and antioxidant applications

In view of the current study's demonstration of the synthesis of clay-doped ZnO composites, we present a low-cost method for producing clay-metal oxide (clay/ZnO). Utilizing the solution combustion technique, a composite of clay/ZnO was produced utilizing citric acid as both a fuel and a complexing agent. The hexagonal unit cell structure of the created clay/ZnO may be seen using XRD patterns. The ZnO-infused clay was visible in FE-SEM micrographs as homogenous, sphere-shaped ZnO. The possible involvement of clay/ZnO photocatalytic activity in the UV-induced photodegradation of malachite green dye was investigated. The 90% degradation rate shows the composite's outstanding photocatalytic degradation capacity. The resulting substance was electrochemically analyzed using a constructed electrode in 0.1 M KOH electrolyte. It increased its sensor capabilities, which now include chemical and biomolecule sensors, and it excelled in cyclic voltammetry-based redox potential studies. To efficiently evaluate chemically synthesized NPs for electrochemical, sensing, and photocatalytic applications, this study intends to create a solution combustion procedure for the synthesis of clay/ZnO nanocomposite using urea as fuel

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The Effectiveness of Cone Beam Computed Tomography (CBCT) in Assessing Sialolithiasis – A Review

<p>Sialolithiasis stands as the primary cause of enlargement in major salivary glands, including the parotid, submandibular, and sublingual glands. This condition primarily impacts people between the ages of 30 and 60, and it is more common in males. The most commonly observed symptom is intermittent gland swelling and discomfort triggered by eating. Various imaging methods, such as plain radiography, sialography, computed tomography (CT), cone-beam computed tomography (CBCT), ultrasonography (US), magnetic resonance imaging (MRI), and nuclear scintigraphy/positron emission tomography (PET), are utilised for diagnosing salivary gland lesions. Today, the rapid acquisition of 3D images via cone-beam CT(CBCT) has overcome time constraints associated with traditional medical CT and MRI. A swift and precise diagnosis can significantly enhance treatment effectiveness. CBCT has the potential to revolutionise dentistry with advantages like high-resolution imaging, shorter scan times, and reduced patient radiation exposure.</p><p>Keywords:- Sialolithiasis, 3-Dimensional imaging, Cone beam Computed Tomography.</p&gt

Microstructural and mechanical evaluation of post-processed SS 316L manufactured by laser-based powder bed fusion

Post-processing is one of the main ways to improve mechanical and microstructural characteristics of stainless steel 316 L fabricated by the laser-based powder bed fusion (LPBF) process. In this study, optimized LPBF parameters were used to manufacture SS316L bars. For the post-processing, two main heat treatment strategies have been used, quenching and tempering, with various heating and dwelling conditions. While micro-CT scanning was used to identify the porosity inside the as-built specimen, the microstructures of both as built and heat-treated specimens were additionally investigated by optical microscopy and scanning electron microscopy (SEM). The tensile test’s wrought specimens were obtained at various strain rates of 0.1, 0.01, and 0.001 s1 A two-dimensional (2D) digital image correlation (DIC) technique and fractography analysis were used to understand the tensile behavior further. The results show that the as-built specimen density level was in the range of 99.993e99.997%, with only extremely small pockets of pores present. The microstructure results show that temperature distribution is the most important factor in the formation of columnar grains (CG). The columnar-shaped grains formed from the edge of the melt pool (MP) in the direction of the laser motion path. The resulting dimensions and form of the cellular structures are presented. The crystal orientation of the specimens was also studied with electron backscatter diffraction (EBSD). The result shows that the fraction of directional grains is relatively small due to a scan rotation and the scanning strategies adopted during the LPBF process. With heating at 1050 C with a dwell time of 40 min, followed by quenching in cold water, smaller grain sizes were obtained, meaning longer grain boundaries and major impediments to dislocation motion, leading to better mechanical properties and fracture characteristics over wrought specimens. The results of EBSD and SEM were also correlated with the 2D DIC test result