bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis and optical properties of innovative degradable black pepper composite material
Authors: Deshpande Archana S , Parauha Yatish R , Deshpande Sarang J , Dhoble N S , Dhoble S J 
Published: June 2021

Abstract
Widely used as a medicinal plant in Ayurveda black pepper is also a main content of spices. Easily available of such kind of herb is studied the first time as a luminescence point of view. In this paper, we have studied luminescence characteristics of black pepper samples and check their properties for LED applications which are synthesized in four parts 1) Pure powder of black pepper 2) Black Pepper Solution by ethanol 3) Europium (Eu) doped black pepper solution and 4) Black Pepper thin film. The synthesized samples were characterized by Photoluminescence (PL) techniques. The PL characteristics for all four samples showed interesting results. Pure black pepper powder showed PL emission at 471nm under 421nm excitation wavelength. Black pepper solution shows an emission band around 430nm under 397nm excitation. Europium doped black pepper solution shows two emission peaks at 516nm and 658nm under 440nm excitation wavelength. Thin-film of pure black pepper shows an emission band around 454nm under 390nm excitation wavelength. The CIE Chromaticity Coordinates of the Black Pepper and other synthesized samples shows color co-ordinates near the blue and white region in the visible spectrum. These CIE chromaticity co-ordinates demonstrate high spectral characterization of developed materials such as high color purity and excellent chromaticity co-ordinates. The entire photoluminescence results indicated that synthesized samples have promising potential for LED applications.
Photoluminescence Properties of Eu3+ doped KAl(SO4)2 Phosphor
Authors: Bargat S R , Parauha Yatish R , Mishra G C , Dhoble Samikha B. , Dhoble S J 
Published: June 2021

Abstract
A series of KAl(SO4)2 phosphors with different Eu3+ doping concentrations have been synthesized by solid-state reaction method. In the present work, the properties of synthesized Eu3+ doped KAl(SO4)2 phosphors have been examined by XRD, Photoluminescence (PL), and photometric characterization techniques. Under Near Ultraviolet (NUV) and blue excitation at 395nm and 466nm, PL emission spectra observed at 593nm and 614nm, which are ascribed due to 5D0→7F1 and 5D0→7F2 transition of Eu3+ ions. The emission band of 614 nm indicates the highest emission intensity compared to the 593 nm emission band. The PL emission spectra depict maximum intensity at 0.7mol% doping of Eu3+ ions. In addition, the synthesized Eu3+ activated KAl(SO4)2 phosphors show good color chromaticity coordinates, which is lies in the orange-red region. All these results indicated that the synthesized Eu3+ activated KAl(SO4)2 phosphors have potential results for future work in the field of solid state lighting.
Study of optically stimulated luminescence dosimetric properties of submicron BaSO4: Eu Phosphor
Authors: Nikam M S , More Y K , Butey Bhavana , Jog Milind , Wankhede S P , Kondawar S B , Moharil S V 
Published: June 2021

Abstract
In this context dosimetric properties of submicron BaSO4: Eu phosphor have been studied. To reduce the grain size of the material to submicron level, top-down approach (ball billing) has been adopted. The phosphor showed good optically stimulated luminescence (OSL) properties. The OSL properties of the phosphor were altered due to the particle size reduction on ball milling. Ball milling affected the kinetics of OSL Processes. OSL dose response of the phosphor has been increased up to 13 kGy on ball milling which makes it useful in high dose dosimetric applications.
Effect of lanthanum dopant on dielectric dispersion of Lead Germanate (Pb5Ge3O11) single crystals
Authors: Ghulghule JR 
Published: June 2021

Abstract
Dielectric dispersion and loss dispersion for pure and lanthanum doped lead germanate (Pb5Ge3O11) single crystals were studied in the frequency region 100 Hz to 100 KHz. The measurements were taken at room temperature, 100 °C and 200 °C. The observed dielectric and loss dispersion is discussed.
Solar photovoltaic technology: A review of different types of solar cells and its future trends
Authors: Dambhare Mugdha V , Butey Bhavana , Moharil S V 
Published: June 2021

Abstract
The Sun is source of abundant energy. We are getting large amount of energy from the Sun out of which only a small portion is utilized. Sunlight reaching to Earth’s surface has potential to fulfill all our ever increasing energy demands. Solar Photovoltaic technology deals with conversion of incident sunlight energy into electrical energy. Solar cells fabricated from Silicon aie the first generation solar cells. It was studied that more improvement is needed for large absorption of incident sunlight and increase in efficiency of solar cells. Thin film technology and amorphous Silicon solar cells were further developed to meet these conditions. In this review, we have studied a progressive advancement in Solar cell technology from first generation solar cells to Dye sensitized solar cells, Quantum dot solar cells and some recent technologies. This article also discuss about future trends of these different generation solar cell technologies and their scope to establish Solar cell technology.
Enhanced electromagnetic interference shielding effectiveness of carbon-based conducting polymer nanocomposites
Authors: Modak P , Nandanwar D 
Published: June 2021

Abstract
Carbon is always a fascinating material, the allotropes of carbon family like fullerenes, graphite, graphene, carbon nanotubes and various fillers that improves the Electromagnetic interference (EMI) shielding is of large interest in various frequency band. In the present work, initially Multiwalled Carbon Nanotubes (MWCNT) and Graphene (GNS) were functionalized to improve the interaction of conducting polymer. Polyaniline (PANI)/(MWCNT) and Polyaniline (PANI)/(GNS) were synthesized by in situ oxidative polymerization method and then characterized by SEM analysis. The electrical conductivity of the nanocomposites increases with increase in weight percent of CNT or GNS as compared to pure polyaniline. The carbon based conducting polymer nanocomposites showed semiconducting nature with enhanced EMI shielding effectiveness. The EMI Shielding effectiveness (SE) of carbon based conducting polymer nanocomposites increases with increase in weight percent of CNT or GNS. For both the nanocomposites PANI/MWCNT and PANI/GNS absorption is the mechanism which is dominant which can be used as an Electromagnetic Interference Shielding material.
Current status of perovskite in X-ray detection for medical imaging technology
Authors: Butey Bhavana , Butey Swatika , Patankar Bhakti , Raut V D , Dambhare Mugdha , Moharil S V 
Published: June 2021

Abstract
The X-ray imaging is a powerful tool used in medical diagnostics, non-destructive material inspection, security checks, nuclear plants and research field. Perovskites is considered as a promising candidate for X-ray detection owning to its remarkably improved sensitivity, low-cost synthesis, detection limit, response time and better special resolution. In this review paper the challenges and future scope of the reported work in the lead based and lead free single and polycrystalline perovskites is studied. Most of the reported results are based on single pixel detection. Hence, it is proposed that an interdisciplinary collaborative work will only facilitate its practical implementation in state-of-the-art X-ray imaging technology.
Synthesis and spectral study of 2, 4-Diaminophenol based copolymer
Authors: Dhore M S , Bondre A N , Behera C , Amalraj S 
Published: June 2021

Abstract
A copolymer resin was synthesized by condensation polymerization reaction of 2,4-diaminophenol, Oxamide and formaldehyde with 2N NaOH as a catalyst. The purification of copolymer was carried out by precipitation technique and column chromatography. The purified copolymer resins were confirmed by Infra-red, 1H and 13C-NMR spectroscopy. Further formation of copolymer has been confirmed by Mass Spectrometry. The surface morphology of copolymers was established by Scanning Electron Microscopy (SEM). Degradation of synthesized copolymer were performed by Thermogravimetric Analysis (TGA). The stability is observed as up to 473 K and complete mass loss was observed up to 1173 K.
Effect of turbidity on survival of Escherichia coli, feacal coliform and total coliform in grey water by using solar disinfection (SODIS)
Authors: Khedikar Isha P , Tembhurkar A R , Dabhekar Kuldeep R , Godboley B J 
Published: June 2021

Abstract
Tropical country like India can use an alternative disinfection option to utilize solar energy for disinfecting grey before reuse. This study was aimed to conduct experiments to examine the impact of turbidity (75NTU, 50NTU and 30 NTU). This experiments were carried to inactivate EC (Escherichia Coli), FC (Feacal Coliform) and TC (Total Coliform) at different flow-rate (33.4, 44.3, 66.8, 135, 268 and 555 ml/min) by solar radiation intensity. It was observed that as turbidity and flow-rate as goes on decreasing inactivation of bacteria goes on increasing.
Optimum flow depths prediction along the convergent stepped spillways side walls
Authors: Wadhai P J , Khode B V , Solanke S S , Bhorkar M P 
Published: June 2021

Abstract
Stepped spillway designs are popularly adopted in dam systems due to their distinct advantage of enhanced energy dissipation of flow. Several references and literature are available for the design of stepped chute with straight side walls. For spillway modification works or due to site-specific situations, spillways may sometimes be provided with convergent training walls. But very few literature references are available on spillways having stepped chute provided with convergent side walls instead of straight side walls. The outcome of comprehensive experimental investigations carried out on spillway experimental set up with 0.7H:1V (i.e. θ = 55°) slope of stepped chute and side walls with 15° convergence on both sides is presented. This paper described expressions for estimation of optimum depth of flow and decide the height of sidewall in spillways having stepped chute required to be provided with symmetrically converging side walls.
A study of compressive strength of concrete by using sugarcane baggase ash
Authors: Solanke Shrikant S , Pawade P Y 
Published: June 2021

Abstract
Ordinary Portland cement (OPC) is widely as a construction material in the entire world. Since silica and lime being the basic components of the ordinary Portland cement therefore many industrial waste materials comprising of these elements are used as supplementary product in OPC. Sugarcane Bagasse ash is one such material which has high silica (SiO2) content that results in formation of C-S-H bond when operated with free lime. The basic idea behind the utilization of industrial waste is to reduce its abundance in nature and also to minimize the cost of concrete. The present study focusses on making a sustainable concrete and assessing its performance by using sugarcane baggase ash (SCBA) as replacement of cement with different percentages (0%,5%, 10%, 15%, and 20%). For the same M25 & M30 grade of concrete with water cement ratio of 0.45 was prepared by using this composition cube casted for testing purpose. The curing of these specimen was done in different environments and the strength was analyzed at various concrete ages i.e. 7, 28, 56, and 90 days. The study provided the evidence that utilization of SCBA as replacement with cement is highly advantageous up to an optimal limit without causing any reduction in strength. In addition, it revealed that SCBA concrete performs better when subjected to aggressive environment as compared to OPC even at later stage.
Anti-cancer inhibition studies of naturally occurring Terpenes using in-vitro technique
Authors: Ramteke A , Ganatra S , Gour P , Jasudkar D , Tulankar A 
Published: June 2021

Abstract
Solvent extractions of shade dried seeds of Cyamopsis tetragonoloba, Pithecellobium dulce and Coriandrum sativum plants were executed using organic solvents. The obtained extracted crudes were subjected to the chemical analysis followed by instrumental analysis using standard procedures to identify the naturally occurring phytochemicals [1, 2, 3,]. Limonene, Oleanolic acid and Linalool were obtained from ethanol extracts of Cyamopsistetragonoloba, methanol extract of Pithecellobium dulce and acetone extract of Coriandrumsativum respectively. The compound identification were confirmed by 1H NMR, 13C NMR, IR and Mass spectroscopy [4]. The anti-cancer activity of the extracted terpenes determined using in-vitro analysis on HeLa-Human cervix cell lines. The obtained IC50 value of Oleanolic acid shows better biological activity against HeLa cell lines. It was also found that there is no cell lysis in HeLa cell lines in case of Limonene with concentration less than 30 μg. However, biological activity of Linalool is better in case of HeLa cell line. This suggests that Oleanolic acid and Linalool is good anti-cancer agent as reported from in vitro studies against Hela-Human cervix cell line.
Review on the proportional study of segmentation techniques for iris acknowledgment
Authors: Divya C D , Rajendra A B 
Published: June 2021

Abstract
Biometrics is one of the fields that are emerging now a days, Iris biometrics was found to yield better consequences on account of persistency, accuracy and security. Iris is a thin, annular arrangement that is existing in the eye, which is colored slice of the eye that controls the extent of the pupil. In this paper we are going to review different techniques that are applied to segment the iris region from the eye along with the available databases using which we will be able to fetch the image of the iris from different categories.
Analysis of Deteriorating Inventory Work (2016-2019)
Authors: Shekhawat Santosh , Rathore Himanshu , Sharma Kalpna 
Published: June 2021

Abstract
In the present review paper, we are presenting comprehensive information about the advances and recent researches made in the field of inventory supply chain for deteriorating items. This paper studied some characteristics which are playing important role in management area of deteriorating inventory supply chains. We have categorize our reviewed papers according to the keywords like demand rate, deterioration rate, two warehouses dispatching policy, green supply chain, permissible delay in payments and some strategies like vendor managed inventory (VMI), Stackelberg Game, sale, discount, effects of dynamic pricing of deteriorating items on income and deterioration, unexpected deterioration identification etc. The research work which is tabulated in this paper offer clear information about the inventory supply chain of deteriorating items. We have also provided future research directions in this area.
The Analytic Invariants of Spherically Symmetric Space-time in V
Authors: Bagde P. O. , Thomas K. T. , Ghumde R. G. 
Published: June 2021

Abstract
In this paper we studied the analytic invariants of spherically symmetric space-time by considering the various quadruples of orthogonal unit vectors αi
, βi
and then some results have been developed there upon. Further it is noticed that, for Kspsq
= Krprq
= Krsrs
= Kpqpq
= 0, p ≠ q ≠ r ≠ s and p, q, r, s = 1, 2, 3,4, the quadruple (αp, αq, αr, βs
) and (αs, βp, βq, βr
) of the orthogonal unit vector αi
and βi
yield the flat geometry of the space-time if and only if ρ
5 = 0. Also for Krprq
= Kspsq
= Kpqps
= 0 and gqqKpsps
+ gssKpqpq
= 0; p ≠ q ≠ r ≠ s, p, q, r, s = 1; 2; 3; 4, the quadruple (αp, αq, αr, βs
) and (αs, βp, βq, βr
) of the orthogonal unit vector αi
and βi
yield ρ
4 = constant, which leads to the well known theorem of Schur concerning the space of constant curvature.
Experimental investigation of milling process under optimum lubricant use
Authors: Sahare Shilpa B , Untawale Sachin P , Kamble Prashant D , Chaudhari S S , Balvir Trupati 
Published: June 2021

Abstract
Performance of the machining and the efficiency of milling operation depend on several process variables among which hardness of work material is of great significant. In this study, experimentation was carried out to investigate the effect of work hardness on end milling process. Workpiece material hardness is used as a noise factor. Input parameters used are spindle speed, feed; depth of cut and tool diameter.
The experiments performed under wet and minimum Quantity lubrication and results of both compared. further for getting optimal lubricant conditions the experiments performed for various levels of flow rates of minimum quantity lubrication to get the best optimal setting. Output parameters are surface roughness, material removal rate, cutting force and tool wear. Design of Experiment (DOE) with Taguchi L27 Orthogonal Array (OA) has been explored to produce 27 specimens on Al2024 aluminium by end milling operation at three different levels of hardness of material. The experiments performed under wet and minimum quantity lubrication condition and results compared. Further For optimal lubricant condition the experiments performed at various flow rate of Minimum Quantity Lubrication and “best” optimal setting is identified.
A factor analytical study of scores obtained by B.Ed. students of Nagpur region in theory papers
Authors: Vaidya Nalini V , Uparkar Satyajit S , Lokhande Kalpana G 
Published: June 2021

Abstract
In this paper, the study will be conducted to examine whether there is any communality among the marks obtained by B.Ed. examinees in various papers of this course since there are three major streams into which B.Ed. students are channelized.[1,2] The marks obtained by the examinees in three streams will be studied separately. The three streams are Arts, Commerce and Science even though the B.Ed. courses are open to all University graduates including B.Sc., Agriculture, B.E., B. Tech, M.B.B.S. However, there are few instances all over the country where B.E., B. Tech, M.B.B.S. degree holders seek and get admission in B.Ed. courses. Thus the marks obtained by B.Ed. examinees belonging to the three streams in 2016-17, 2017-18, 2018-19 in R T M Nagpur University were subjected to factor analysis. While discussing the scope of the present work, it is essential to mention that the factor analysis is one of the advanced procedures of statistical analysis of the data. The marks obtained by the examinees in each of the said streams for every year separately are factorially analyzed and interpreted.
Modelling to find Rank of Matrix when rows are similar / in form of scalar multiple
Authors: Pidurkar Smita R , Singh Dileep Kumar , Vaidya Nalini , Deshpande Archana 
Published: June 2021

Abstract
Here formulas are formed to calculate rank of matrix. By applying it to the problems we can reduce the steps so it save time for calculations. After reducing the matrix to its upper triangular form, the case may occur that we get, row equivalent matrix / rows in the form of scalar multiple of each other, in such case formula (1) is used to find the rank of matrix. Or it may possible that without reduced the matrix to upper triangular form, we get the matrix whose rows are identical or in form of scalar multiple of each other in such case formula (2) is used. In this paper, the problems are solved for computation of rank by different methods and results were compared.
Instant messaging using xmpp
Authors: Gupta D , Shivankar J , Gugulothu S 
Published: June 2021

Abstract
This paper discusses a web based instant messaging application based on XMPP protocol. This application can be used from any platform to send and receive texts and also be used for push notifications and broadcast news across the clients. The paper discusses the client server architecture in a single server system that can be used in smaller organization for secure message delivery. The clients can also use group chats or multi user chat rooms other than individual chats. The scope of the proposed application can be expanded to and not limited to file sharing system to share files(.pdf, .ppt, .docx) and multimedia files(.jpeg, .jpg). A daily task list or timesheet can also be added so that employees can use this application to add or remove daily work reminders.
Experimental mix design approach of reactive powder concrete to recognize compressive strength through non-destructive test
Authors: Sonkusare Hemantkumar G , Pawade Prashant Y , Pujara Hardik P 
Published: June 2021

Abstract
Rapid industrialization in concrete industry dominates the infrastructural development globally. Where, the crowded places, old structures, monuments gets maintain and rehabilitate to strengthen then we use high grade concrete. For this purpose we use reactive powder concrete and without destroying the structure know its strength parameters. This investigation mainly focus on mix proportion of different ingredients of reactive powder concrete and check the freshly prepared specimen for non destructive test as per codal provision. Ultrasonic pulse velocity test gives the idea about the uniformity of material, dense particle and homogeneity.
Higher the pulse velocity or wavelength which passes through specimen higher is the compression strength. In this examination specimen were prepared from silica fumes, silica sand and steel fiber to achieve the durability. Here, RPC M30 and RPC M60 cubes were prepared and tested after 3, 7, 14, 28 and 90days. The specimen was cured and age by accelerated curing and conventional curing to see increment in compression strength. The accelerated curing temperature was kept 600C with relative humidity 60% and conventional curing at 250C i.e. on room temperature ±20C. In reactive powder concrete there is a less cement use because of silica fume which was again by product of SiO2 i.e. silicon dioxide. This is resulting into less significant greenhouse effects to improve sustainable development goal.
This paper gives sufficient idea about the wavelength and its characteristics. Uses of silica sand in study of RPC and structural changes occur in compression strength. In this paper linear relationship was establish with the help of regression analysis for compactness of material and studying the wavelength. The R2 value is ranges 0.8 to 0.99 means the relationship was good and material is homogeneous. Plasticizer and water cement ratio plays an important role in case of workability and cement binder ratio.
A high-accuracy and non-intermittent frequency measurement method for Larmor signal of optically pumped cesium magnetometer
Authors: Dong H. , Xue L. , Luo W. , Ge J. , Liu H. , Yuan Z. , Zhang H. , Zhu J. 
Published: June 2021

Abstract
The optically pumped cesium magnetometer is a quantum magnetometer based on the Zeeman effect. The frequency of the output Larmor signal is proportional to the magnetic field intensity.
Therefore, improving the measurement accuracy of the Larmor frequency can make the magnetic field measurement more accurate.
However, the Larmor signal is easily coupled with various randomly distributed noises, which will generate an unavoidable trigger error.
To address the above problem, we propose a multi-gate and equal-precision fusion method. In this method, the trigger error is averaged into the count of each small gate through the multi-gate structure to improve the frequency measurement accuracy and the continuous sampling performance.
We implemented this method on the FPGA and conducted indoor and outdoor experiments. The experimental results show that this method not only improves the measurement accuracy by three times of the traditional method, but also enhances the stability and noise suppression ability of the system, and can provide technical and instrumental support for magnetic field measurement projects.