bluuebunny/crossref_metadata_2025_split huggingface dataset:
Biogenic Synthesis of Magnetite Nanoparticles using the Roots of Mirabilis Jalapa for Efficient Removal of Eluent, Anti-Bacterial, and Antioxidant: A Sustainable Approach.
Authors: Madhavi B. , Prameeladevi S. , Annapurna N. , Padma M. 
Published: May 2024

Abstract
Magnetite nanoparticles hold quite immense applications in the fields of drug delivery, environmental remedies, and magnetic resonance imaging as they are biocompatible and can stabilize and reduce. An eco-friendly approach that is viable and sustainable for synthesizing magnetite nanoparticles with controlled properties has new avenues for their applications in various fields. Magnetite nanoparticles are often used in the removal of organic eluents as they can adsorb heavy metals which binds on the surface and cleans the polluted area. Magnetite nanoparticles synthesized from the roots of Mirabilis Jalapa have a variety of uses in the treatment of lesion infections. As antioxidants, they reduce the oxidative stress caused by free radicals. Morphology, size, and form of Magnetite nanoparticles are determined by UV-visible spectroscopy, SEM, EDX, TEM, TGA, XRD, and FTIR, respectively.
A Review on Energy Storage Technologies: Current Trends and Future Opportunities
Authors: Padamurthy Ankammarao , Vatala Manikanth , Kumar Gandla Praveen , Santosh P V Ch R K , Sheelwant Amar , Vemanaboina Harinadh 
Published: May 2024

Abstract
Despite the fact that numerous energy storage technologies have already been reviewed in the scientific literature, these innovations are right now at various stages of technological development, with only a few having been demonstrated for use on a large scale. The majority of research articles on energy storage give detailed descriptions of these technologies, but there is little data on how these technologies compared when used for energy storage. This paper provides a comprehensive review on energy storage concepts and also compares the different energy storage technologies in terms of research trends and future opportunities. Among the reviewed energy storage technologies, the thermochemical energy storage (TCES) method stands as an attractive and potential alternative to the conventional heat storage methods like sensible and latent thermal energy storage (STES and LTES) for several reasons that include: high energy storage density, minimal heat losses between the system and surroundings, and long term heat storage.
The study of rate constants of redox reactions on cobalt (III) complexes of α-hydroxy acids with quinolinium chlorochromate (QCC) in micellar medium
Authors: Raghupathi Raju M. V. , Vijaya Kumar N. , Tulasi Bhavani K. , Subramani K. , Rama Swamy G. , Prameela Devi S. , Tirumala Rao B. , Lakshmi Kanth G. V. 
Published: May 2024

Abstract
Complexes of QCC with bound and unbound alpha-hydroxy acids of Co (III) in the micellar medium is unable to obtain some sort of electron transport mode kinetics in the medium. Unbound and bound hydroxy acids are oxidised by QCC, which also oxidizes Cobalt (III). The Cobalt (III) centre cannot receive an electron while the C-C bond is being split. These compounds’ oxidation rates rise in direct proportion to their temperature. When the concentration of surfactant is increased, the rate increases. More than ammonium laurylsuphate, DDAC can speed up the oxidation of the process (ALS). A similar pattern was found in the Co (III) complexes containing lactato, glycolato, and mandelato.
Evaluation of tensile properties of ABS material specimen using commercial and manufactured filaments in FDM process
Authors: Nanda Kumar P. , Ravi Kumar P.S , Lakshmi Narayana C. , Uday Kumar P. 
Published: May 2024

Abstract
Acrylonitrile butadiene styrene (ABS) is the most common of engineering plastic materials; it is copolymer of Styrene-Acrylonitrile and butadiene styrene in special form. It is widely used in substantive and Additive Manufacturing (AM) applications. AM is a promising manufacturing technology that can fulfill future needs as products and their configurations are changing day by day. Fused Deposition Modeling FDM is an AM technique that fabricates parts layer upon layer. This paper analyses the effect of different process variables and orientations on the tensile properties of the FDM manufactured specimens. Standard specimens are printed using commercial ABS and manufactured ABS filaments for analysis of tensile properties. The ABS filament is fabricated using a mini filament extruder. After modeling, the specimens are printed using an FDM printer. The tensile testing of specimens is carried out on the Instron 3360 table frame UTM machine. Tensile properties obtained for different specimens are presented.
Investigating the Laser engraving on Polymethyl methacrylate sheets and process parameters optimization using GRA technique.
Authors: Nanda Kumar P. , Muni Varma V. , Venkata Jaswanth J. 
Published: May 2024

Abstract
Polymethyl methacrylate (PMMA) is sound-resistant because it can lessen the transmission of outside sound waves. PMMA is widely used in many applications, such as automotive lighting, electronics and energy, health, sanitation, etc. Laser engraving for PMMA sheet panels with process parameters of good quality is a major problem in the process industry. There is a demand for surface roughness that is affected by the volume of material removal. Therefore, in this work, multi-value response optimization was performed on MRR and surface roughness during laser engraving of PMMA sheets using an optical fiber diode in a dry environment through gray relational analysis. Also, regression models are developed, and their responses are compared for their correlation. The GRA combined with the Taguchi method has proved efficient in the decision-making of multi-responses in a laser engraving environment.
Investigation of acoustical excess parameters and FTIR studies for binary liquid mixtures of tetrachloroethylene and cyclopentanone at different temperatures.
Authors: Bonjubabu M , Mahesh P , Aparna P V S L , Poornima K , Jayarao K , Samatha K. 
Published: May 2024

AbstractSpeed of sound (U), Density (ρ), and viscosity (η) values of liquid mixtures of Tetrachloroethylene with Cyclopentanone and pure liquids were determined at regular intervals of molar range at different temperatures (303.15, 308.15, 313.15, 318.15) K. From the experimentally determined values, thermo-acoustic parameters such as excess molar volume (VE) and excess free length (LfE), excess Gibb’s free energy (ΔGE) and excess enthalpy (HE) have been estimated. The variations of the above parameters discussed based on intermolecular interactions existing in this binary mixture. The computed values of sound speed in the mixture from various theories are compared with experimentally calculated values and have a clear check to validate the theories for the present system, and FTIR studies provide detailed analysis of molecular interactions.
Structural and Quantum chemical insights into the atomic orbitals of 2-benzoylbenzoic acid: Density functional theory approach
Authors: Prasanna Kumar P.V. , Gaurav G.V. , Jagadeeswara Rao D. , Sreedhar S. 
Published: May 2024

Abstract
The present work aims to explore the structural insights and the molecular orbitals associated with 2-benzoylbenzoic acid through density functional theory approach. The geometrical parameters of the optimized structure of 2-benzoylbenzoic acid were obtained at B3LYP/6-311++G basis set. The atomic sites which are prone to electrophilic/nucleophilic attack were identified from molecular electrostatic potential (MEP) surface analysis. The molecular orbitals (lone pair, bonding and anti-bonding) which are favorable to the charge delocalization within the system and stabilize the molecule were studied. Besides, the vibrational assignments of the characteristic group frequencies and coupled modes vibrations were made using Cartesian coordinate displacement analysis. Moreover, the electronic transitions between the filled and unfilled molecular orbitals of 2-benzoylbenzoic acid were investigated.
Analysis Of Delamination During Drilling Process Of Aramid Fibre Reinforced Polymers
Authors: Durga Prasada Rao V , Mahaboob Ali Sk R S , Ali Sk M Z M S , Santhoshi B S 
Published: May 2024

Abstract
Aramid Fibre Reinforced Polymer (AFRP) is a modern engineering material which is highly versatile in nature. These materials are usually used to produce impact resistant structures. Aramids have high modulus, tensile strength, stiffness, and low weight density. AFRP, under cyclic loading, shows good performance. As far as textiles and concrete structures are considered, AFRP is one of the best fiber-reinforced composites. Delamination is a failure mode that causes fracture of a variety of materials including concrete and laminate composites. A material, in general, fractures into layers due to delamination effect, i.e., separation into its constituent layers. In the present study, the AFRP polymer is prepared by hand layup method, drilling operation is done on the composite under different machining conditions, measurements regarding delamination are taken using a tool room microscope, and delamination factor is calculated by using a suitable equation. Rate of feed, spindle speed and diameter of drill are the drilling parameters under consideration. Each of these parameters are considered at three different levels. A fully crossed design consisting of 27 tests is considered to conduct experiments. The results of different experiments are analyzed statistically using Fisher variance analysis (ANOVA) to determine the impact of variables of drilling on the delamination factor. The main effects plots disclose that the lowest delamination factor is obtained for a rate of feed of 0.4 mm/rev, a speed of spindle of 1000 rpm and for a drill diameter of 15 mm. It is also noted that the delamination factor increases as the speed of spindle and diameter decreases. The interaction plot of rate of feed-spindle speed indicates that the interaction has moderate effect on delamination factor, whereas interaction plot of rate of feed-diameter represents that the rate of feed on delamination factor banks on level of drill diameter, and interaction plot of speed of spindle speed-diameter of drill demonstrates that the interaction has moderate impact on delamination factor. Also, regression analysis is done to establish the general linear model relating delamination factor and the drilling parameters under consideration.
Hall and Ion Slip Current influence on Unsteady MHD Free Convective Boundary Layer Flow Past a Vertical Porous Plate with Thermal Radiation and Chemical Reaction
Authors: Vara Prasad T R K D , Rajakumar K V B , Govinda Rao T 
Published: May 2024

Abstract
The analytical reconnaissance has been effectuated to explicate the influence of Hall and ion-slip current on nonlinear MHD free convective flow near a vertical porous plate in presence of chemical reaction and Dufour effect. In this assessment the governing PDE’s are determined analytically. The impact of multifarious physical parameters has been contemplated on velocity, temperature as well as concentration which were exemplified via numerous graphs whereas quantification for the skin fiction, nusselt number and Sherwood number are demonstrated in numeric data form and are reported in table. In this examination mainly observed that velocity declined with the incremental values of Hall current as well as ion-slip current. Meanwhile velocity as well as temperature accelerated by means of the incremental values of Dufour number. However concentration diminished with the accelerated values of chemical reaction along with Schmidt number
Facile and an efficient one-pot synthesis of 2-arylbenzoxazoles promoted by transition metal oxide nano catalyst
Authors: Prathap Koppolu , Lakshman Shaik , Lakshmi M.V. , Durgarao B.V. , Sirisha D. V. L. , Krishnarao N. 
Published: May 2024

Abstract
The advantages and an efficient path way of process for 2-arylbenzoxazole can be obtained by transition metal oxide Nano catalyst. The transition metal nano TiO2 catalysed and a tandem reaction between substituted 2-aminophenols and substituted aromatic aldehydes to produces scaffold series of 15 smoothly forming benzo heterocycles with good to excellent yields (80-94%). The synthesized benzoxazole compounds were confirmed by FT-IR, 1H, 13CNMR, and mass spectroscopy. This article describes a one-stage coupling technique that provides a unique way to access variously functionalized benzoxazole scaffolds. This methodology consists of a one-pot combination of condensation followed by oxidative addition reactions. It was shown that nano TiO2 in ethanol encouraged the formation of 2-aryl benzoxazole scaffolds and this catalyst quickly boosted the cascade reaction that produced a variety of collections of named derivatives. These protocols are atom-economic, efficient, reusable and modular means of accessing restricted named derivatives that have a substantial substrate tolerance and over ten points of diversity.
Impact of Shape Factor on a Couple Stress Flow of a Ternary Hybrid Nanofluid over an Inclined Flat Plate when Non-Uniform Heat Source and Thermal Radiation are Significant: A Darcy-Forchheimer Model
Authors: Kathyayani Gandrakota , Satya Nagendra Rao Satuluri 
Published: May 2024

Abstract
The study of fluid flow over an inclined flat plate finds applications in a diverse range of engineering fields including aerodynamics, energy production and automotive design. This study theoretically investigates the steady and radiative flow of a ternary hybrid nanofluid (Water + TiO2 + CoFe2O4 + MgO) with couple stress, using the Darcy-Forchheimer model. The flow occurs through a tilted flat plate and is subjected to irregular heat source parameter and entropy generation. The problem’s equations have been transformed into a collection of ordinary differential equations (ODEs), which has been skillfully resolved using the bvp4c solver. Graphs are utilized to elucidate outcomes for two instances of shape components, namely platelet and spherical. An escalation in the couple stress parameter (S) is demonstrated to be inversely related to the fluid velocity, resulting in a drop. Specifically, when 0.5 ≤ S ≤ 3, the friction factor exhibits a decline, with rates of 0.306201851 (for Platelet shape) and 0.304466755 (for Spherical shape). An intriguing observation reveals an augmentation in the generation of entropy as the volumetric fraction of TiO
2 rises. Upon investigation, it has been determined that when the Eckert number (Ecn) increases within the range of 0 ≤ Ecn ≤ 0.3, there is a significant reduction in the Nusselt number. Specifically, the decline is measured to be 0.328685192 for the platelet shape and 0.308939422 for the spherical shape. The utility of the Forchheimer number in regulating the fluid’s motion has been unveiled.
A Review on Distribution of Reinforcement and tensile Strength of Aluminum Lithium Alloy based Nano Metal Matrix Composites Fabricated by STIR Casting
Authors: Ali Sk M Z M S , Krishna Bhaskar K , Sitarama Raju K 
Published: May 2024

Abstract
Aluminum Alloy (AA) parts are employed in lightweight engineering fields and have poor mechanical, wear, and corrosion resistance. Aluminum Matrix Composites (AMCs) are materials created by incorporating hard reinforcing particles into an aluminum matrix alloy. The new material has improved characteristics, including higher specific stiffness and strength, as well as higher corrosion resistance, elastic modulus, wear resistance, and low weight. Metal Matrix Composites (MMCs) are composite materials in which metal serves as the matrix and hard particles or ceramics serve as reinforcement. MMCs are used to improve the functionality of a wide range of technical materials. It could be used in many different fields, including aerospace, automotive, space travel, and medicine. In this paper, the reviewer investigates the distribution of reinforcement and Tensile Strength (TS) of Aluminum Lithium (Al-Li) Alloy/Nano Al2O3 MMC fabricated by stir casting. Finally, the authors provide a comparative analysis of prior reviewed research papers. After comparative analysis, TiB2/2195 composite has higher Tensile Strength (115.4%) than the other composite such as AA7010-TiB2 (260%), Al2O3 + SiC (72%), A356/SiC (21.87%), and Al-SiC (37%).
Synthesis, characterization and magnetic properties of iron oxide nanoparticles from reverse chemical co-precipitation method
Authors: Satyam Naidu K , Annapurna Nowduri 
Published: May 2024

Abstract
Studying magnetic characteristics of iron oxide nanoparticles was highlighted as a key step in creating potential powder nanomaterials. The occurrence of electron spins parallel to the crystallographic orientations and single domain nanopartilces are the recognized causes of superparamagnetism in bulk magnetite. Nanoparticles whose size could be tuned exhibit this superparamagnetism effect. The reverse co-precipitation process is used to create the current magnetite nanoparticles. The iron oxide nanoparticles were synthesized by reverse chemical coprecipitation method and were confirmed based on XRD data. The room temperature magnetic property was studied and the tiny levels of coercivity and remanence indicate that the samples may exhibit superparamagnetic nature.
Optimization of Process Parameters in Under Water Friction Stir Welded AA2014 and AA6082 joints.
Authors: Madhavarao Singuru , Gopalakrıshnam Raju P , Bhadri Raju Chekuri Rama , Vatala Manikanth , Soundaryasanthoshi B. 
Published: May 2024

Abstract
This work focuses on optimizing process parameters in underwater friction stir welding to study their impact on the mechanical characteristics of aluminum 2014 T6 and 6082 T6 joints. The aluminum plates are precisely machined to provide the necessary polish for the underwater friction stir welding process (UFSW). Experiments are designed using Taguchi L-9 orthogonal array, considering three process parameters: speed, transverse speed, and tool angles at three levels each. The aluminum plates of series 2014-T6 and 6082-T6 are securely installed in the machine. The plates will be welded using the UFSW process using a taper pin tool. The welded plates are next subjected to tests to assess their mechanical qualities. Tests for tensile strength, hardness, and impact strength are conducted on the welded area of the plate to determine its mechanical qualities. An ANOVA was conducted to determine the significant influence of each variable. The optimal values achieved are Tensile Strength of 185.592 N/mm2, Hardness of 75.1 (BHN), and Impact Strength of 21.236 Joules at a speed of 1120 rpm, transverse speed of 80 mm/min, and tilt angle of 2 degrees.
TiO2 nanoparticles as reusable catalysts for the efficient synthesis of 2, 4, 5-trisubstituted-1H-imidazoles
Authors: Lakshman Shaik , Srinivasa Rao N. , Kadgamala Sridevi. , Durgarao B. V. , Krishnarao N. , Diwakar Bhagavathula S 
Published: May 2024

Abstract
A simple, highly efficient and eco-friendly protocol for the synthesis of 2,4,5-trisubstituted-1H-imidazoles via one-pot three component condensation of benzil, aldehydes and ammonium acetate under solvent-free conditions has been achieved utilizing TiO2. The applicability of this procedure was investigated further in relation to the synthesis of fused imidazoles that exhibit structural versatility. The remarkable features of this methodology are excellent yields in shorter reaction times, cleaner reaction profile, and environmentally benign nature, use of non-toxic, readily synthesizable, inexpensive and recyclable catalyst. The titled compounds can be confirmed advanced spectroscopic evaluation by 1HNMR, 13CNMR and LCMS. The synthesis of green nanoparticles utilizing green protocols is a very good, safe, effective, and environmentally friendly technique in Nano science research. These are employed in many scientific fields. These are used in the catalysis
Measurement method of countersunk rivet flatness based on visual 3D reconstruction
Authors: Sun Jianyang , Jia Shuang , Wang Jin , Zhu Changfa , Wang Yunhao 
Published: May 2024

Abstract
The flatness is a key indicator to evaluate the riveting quality of countersunk rivets on the skin of aircraft or rockets. Aiming at the deficiencies of current measurement methods used by aerospace manufacturers, a measurement method of countersunk rivet flatness based on visual 3D reconstruction is proposed. Through the zonal modulation of the structured light intensity of the projector, the image interference problem caused by the highly reflective skin of aircraft and rockets is solved. A rivet detection algorithm based on an arc feature is designed to realize the accurate identification of rivets in the image. A riveting surface reconstruction algorithm based on region segmentation and parallax constraint is researched, which greatly improves the efficiency of 3D reconstruction. A calculation method based on the local mean is used to improve the stability of the measurement results. The experimental results show that the measurement error of the proposed method is within ±30 μm, the standard deviation of repeated measurement is within 6 μm, and the time of measuring a single rivet is about 2 s. The accuracy, stability, and efficiency of this method meet the requirements.
Research on the minimum detection limit for measuring high-purity gases by gas chromatography
Authors: Liu Hanbing , Cheng Xiaoming , Han Xi , Zha Ling , Wan Fang , Yang Yan , Sun Chao , Yu Guang , Fang Hua 
Published: May 2024

Abstract
At present, the application fields of high-purity gases (purity reached 99.999% and above) include the semiconductor manufacturing industry, chemical analysis, fuel cells, aerospace, medicine, etc., and the quality and purity requirements of high-purity gases are also getting higher and higher. As the only detector that can detect ppb-level trace impurities, the pulsed discharge helium ionization detector (PDHID) is the most used detector in the field of high-purity gases. The minimum detection limit of existing PDHID-related analysis methods is usually calculated theoretically. In order to verify the actual minimum detection limit of PDHID, a multi-group gas distribution system was used in this paper to dilute the permanent gas components in the high-purity gas, and the gas chromatograph with pulsed discharge helium ionization detector (GC-PDHID) was used to detect the obtained different concentrations of standard gases. The experimental results showed that PDHID possessed high sensitivity, good linearity, and a wide linear range. The actual minimum detection limit for the permanent gas components in the high-purity gas could reach the ng/g (ppb) level, which could realize the detection of ultra-low concentration samples, and further verify the actual minimum detection limit of PDHID. This experiment provides a reference basis for the analysis of trace gases in the gas industry, especially in industries such as high-purity and ultra-high-purity gases and gas for the electronics industry, and is of great significance in actual production work.