bluuebunny/crossref_metadata_2025 huggingface dataset:
Risk Management in Lending based on Assets of Small and Medium Enterprises
Authors: Guseva Anastasiya Pavlovna , Zhesterov Pavel Valer'evich , Milov Pavel Olegovich , Pindyurina Yuliya Vladimirovna
Published: March 2023

Bank lending to small and medium-sized enterprises is an established and integral element of Russia's market economy. Over the past three years there has been a positive trend in the development of bank corporate lending, including the introduction into national practice of a new form of asset-based lending (ABL). Scientific works of Russian and foreign economists and lawyers were used as materials for the study. The study was based on the statistical database of the Central Bank of the Russian Federation and the statistics of the national project «Small and Medium Entrepreneurship and Support of Individual Entrepreneurial Initiative». We used general methods of scientific knowledge: methods of empirical (comparison, observation) and theoretical (analysis, synthesis) research to study the main indicators of the lending (financing) market for small and medium enterprises (the dynamics of the volume of loans, the dynamics of the number of loans, the dynamics of the number of SMEs receiving credit, the dynamics of debt on loans granted to SMEs, including overdue). The applied research methods allowed us to analyze the SME lending market and identify the main factors affecting the SME lending market in Russia - high interest rates, as well as the growth of overdue loans. Share of overdue loans has averaged 10-15% in different reporting months over the past two years (the analyzed period from April 2019 to April 2021). This study examines current trends in lending to SMEs in Russia, especially the emergence of ABL, which have been underrepresented in recent literature. Recommendations are developed to increase the share of asset-based lending, as well as to increase its volume. The materials of the study can be useful to scholars dealing with this issue, government regulators, as well as commercial banks (including banks with state participation) and factoring finance companies.
UTILIZATION OF AGRICULTURAL WASTE AS A SUBSTRATE FOR PRODUCING CELLULASE ENZYME BY ASPERGILLUS NIGER
Authors: Pratiwi Nurma , Ardiansyah Sigit
Published: March 2023

Fresh Fruit Bunches (FFB) of oil palm, bran, straw, and bagasse are agricultural wastes whose availability is very abundant in Indonesia. The agricultural waste is lignocellulosic waste which still has economic value if further processing is carried out, namely as a substrate in the production of cellulase enzymes. Cellulase enzymes are commonly used in various industries such as food biotechnology, textiles, animal feed, paper, and agriculture to degrade cellulose with its main products, namely glucose, cellobiose, and cellooligosaccharides. In producing cellulase enzymes, it is necessary to have microorganisms that have a high ability to produce enzymes, one of which is Aspergillus niger. The purpose of this study was to determine the activity of crude cellulase enzyme, protein content, and specific activity of cellulase enzyme from agricultural waste which includes FFB, bran, straw, and bagasse. The research methods included preparation of Aspergillus niger culture, delignification, basal medium preparation, cellulase enzyme production, enzyme extraction, crude cellulase enzyme activity test (CMC-ase), lowry method protein content test, and determination of cellulase enzyme specific activity. The study showed that the highest crude cellulase enzyme activity in bran was 26.83 U/ml, the highest protein content in bagasse was 63.42 g/ml, and the highest specific activity of cellulase enzyme in straw was 0.9818 U/ml. The high enzyme activity is influenced by the cellulose content in the material, type of substrate, media, substrate concentration, pH, and temperature.
Strategic Communication and Policies of Türkiye
Authors: Göksun Yenal
Published: March 2023

Since the establishment of the Republic, Türkiye has systematically conducted communication activities to proclaim its own theses to the national and international public. Until recently, those efforts were organized by different institutions and in the context of different regulations. Türkiye’s evolving development and foreign policy agenda over the past 20 years have compelled it to undertake more ambitious endeavors in the area of communication and public diplomacy. As a result of this requirement, the Directorate of Communications was established on July 24, 2018. This study provides a broad overview of the evolution of the Turkish strategic communication viewpoint and conducts an indepth analysis of the development of the Türkiye communication model and current strategic communication initiatives undertaken by the Directorate of Communications.
Rancang Bangun Sistem Informasi Perpustakaan Berbasis Website
Authors: Prima Thomi Cahyo Okta , Andria Andria , Mumtahana Hani Atun
Published: March 2023

Perpustakaan sekolah adalah jantungnya pendidikan Perpustakaan juga membutuhkan suatu sistem untuk mengumpulkan data, mengolah data,dan menyimpan data, yang baik. Untuk memenuhi tuntutan tersebut, perpustakaan perlu menggunakan teknologi informasi, seperti komputer dan aplikasi sistem informasi perpustakaan lainnya, serta meningkatkan sumber daya manusia dan memperbaiki sistem. Pada penelitian ini penulis akan menggunakan metode waterfall sebagai metode pembuatan sistem dan metode analisis SWOT sebagai analisi proses bisnis yang berlangsung di perpustakaan hasil dari observasi dan dokumentasi adalah layanan perpustakaan masih dilakukan secara manual. Permasalahan yang muncul adalah calon anggota perpustakaan harus mengunjungi perpustakaan secara langsung untuk melakukan proses pendaftaran, apalagi jika petugas harus melayani lebih dari satu pengunjung dengan jenis transaksi yang berbeda, dalam rangka memberikan pelayanan yang baik dan efisien kepada anggotanya, perpustakaan memerlukan suatu sistem informasi yang dapat membantu anggota dalam mencari informasi atau referensi mengenai data buku yang dibutuhkan. Sistem perpustakaan juga akan memberi kemudahan bagi pengguna perpustakaan dalam hal proses pendaftaran dan manajemen perpustakaan.
Synthesis of polydiacetylene (PDA) particles for detection of histamine
Authors: Naseri Maryam , Code Christian , Sun Yi
Published: March 2023

Histamine poisoning as a problem of public health and safety attracted attention worldwide. There is a significant need for devices that are capable of measuring histamine levels rapidly with high sensitivity. In this study, a colorimetric sensor based on polydiacetylene (PDA) was developed for histamine detection. Under optimal conditions, the biosensor showed a linear response to different concentrations of histamine within the range of 21 ppm to 210 ppm with a low detection limit of 10.1 ppm. Moreover, the biosensor was successfully employed to detect the histamine level in the spiked canned fish sample. With high sensitivity and recovery values, this assay can be used to monitor the quality of canned fish, suggesting that it holds great potential for on-site detection and real-time monitoring.
On the non-bonding valence band and the electronic properties of poly(triazine imide), a graphitic carbon nitride
Authors: Burmeister David , Bojdys Michael Janus , Eljarrat Alberto , Guerrini Michele , Röck Eva , Plaickner Julian , Koch Christoph T. , Banerji Natalie , Cocchi Caterina , List-Kratochvil Emil
Published: March 2023

Graphitic carbon nitrides are covalently-bonded, layered, and crystalline semiconductors with high thermal and oxidative stability. These properties make graphitic carbon nitrides potentially useful in overcoming the limitations of 0D molecular and 1D polymer semiconductors. In this contribution, we study structural, vibrational, electronic and transport properties of nano-crystals of poly(triazine-imide) (PTI) derivatives with intercalated Li- and Br-ions and without intercalates. Intercalation-free poly(triazine-imide) (PTI-IF) is corrugated or AB stacked and partially exfoliated. We find that the lowest energy electronic transition in PTI is forbidden due to a non-bonding uppermost valence band and that its electroluminescence from the π-π* transition is quenched which severely limits their use as emission layer in electroluminescent devices. THz conductivity in nano-crystalline PTI is up to eight orders of magnitude higher than the macroscopic conductivity of PTI films. We find that the charge carrier density of PTI nano-crystals is among the highest of all known intrinsic semiconductors, however, macroscopic charge transport in films of PTI is limited by disorder at crystal-crystal interfaces. Future device applications of PTI will benefit most from single crystal devices that make use of electron transport in the lowest, π-like conduction band.
Spacial Score – A Comprehensive Topological Indicator for Small Molecule Complexity
Authors: Krzyzanowski Adrian , Pahl Axel , Grigalunas Michael , Waldmann Herbert
Published: March 2023

The fraction of sp3 hybridised carbons (Fsp3) and the fraction of stereogenic carbons (FCstereo) are two widely employed scores of molecular complexity with a strong link to biologically relevant features such as frequency, potency and selectivity of protein binding. However, due to their simplistic nature, they do not comprehensively express molecular topology and they often do not match the chemical intuition of complexity. We propose the spacial score (SPS) as an empirical scoring system that builds upon the principle underlying Fsp3 and FCstereo and expresses the spacial complexity of a compound in a uniform manner and on a highly granular scale for convenient ranking of and comparison between molecules. The size-normalised SPS (nSPS) can differentiate distributions of natural products and synthetic compounds and is applicable in the analysis of biological activity data. Analysis of the ChEMBL database revealed general trends of increasing selectivity and potency with increasing nSPS. Notably, SPS can also be used advantageously in planning and analysis of synthesis programs for direct comparison of chemical transformations and intermediates in reaction sequences, for instance in natural product total syntheses.
The course and clinical manifestations of Peutz–Jeghers syndrome in the Russian population
Authors: Savelyeva Тatyana A. , Ponomarenko Аlexey A. , Shelygin Yuri A. , Kuzminov Аlexander M. , Vyshegorodtsev Dmitry V. , Loginova Аnna N. , Pikunov Dmitry Yu. , Goncharova Еlena P. , Likutov Аleksey A. , Mainovskaya Оlga A. , Tsukanov Аleksey S.
Published: March 2023

Background. PeutzJeghers syndrome (PJS) is a rare hereditary syndrome characterized by the growth of hamartomatous polyps in the gastrointestinal tract, perioral pigmentation and an increased risk of malignant neoplasms. The syndrome is caused by a pathogenic variant in the STK11 gene.
Aim. To assess the clinical picture and treatment of Russian patients with PJS.
Materials and methods. A retrospective analysis of 30 patients from 25 families with an established diagnosis of PJS who were in the Ryzikh State Scientific Center for Coloproctology from 2011 to 2021 was carried out. All patients underwent instrumental examination, including esophagogastroduodenoscopy, colonoscopy, X-ray examination of the small intestine/CT-enterography, in the absence of invaginates video capsule endoscopy, as well as molecular genetic examination for the presence of pathogenic variants in the STK11 gene. All removed polyps were subjected to the histological examination.
Results. The analysis of the clinical picture allowed us to establish the following data: the first complaints in patients were noted in childhood and adolescence, while the median age was 11 [7; 19] (0.524) years; pathogenic variants in the STK11 gene were identified in 26 (87%) cases, among which 10 were described for the first time; during the initial examination, polyps in the small intestine were detected in all 30 (100%) patients, in the stomach in 23/30 (77%) patients, and in the colon in 21/30 (70%); with an age, an increase in the number of polyps in all parts of the gastrointestinal tract was noted; before the diagnosis operations were performed urgently for intestinal obstruction; after the diagnosis of PJS, when polyps were detected in the gastrointestinal tract, endoscopic polypectomies were performed; if endoscopic removal of hamartomatous polyps was impossible, patients were operated as planned; malignant diseases of the predominantly reproductive system were detected in 8/30 (27%) patients. The median age of cancer detection was 52 [31; 52] (1759) years.
Conclusion. Russian patients with PJS have population-specific features in the clinical picture of the course of the disease, which dictates the need to develop their own recommendations for monitoring and treatment of such patients.
Difficulties in diagnosing intestinal T-cell lymphoma. Case report
Authors: Gadaev Igor Yu. , Ershov Vladimir I. , Kovrigina Alla M. , Sokolova Irina Ya. , Tashyan Olga V. , Mingalimov Marat A. , Antyufeeva Olga N. , Budanova Darya A. , Mnatsakanyan Marina G. , Bochkarnikova Olga V. , Nagornaia Daria S.
Published: March 2023

The article describes a rare diagnosis of monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL), due to its veiled by a number of so-called masks of enteropathies. A detailed analysis of all clinical, morphological and immunohistochemical data made it possible to establish the correct diagnosis. The revealed pathology is extremely rare in practice, even among specialists in hematology. The article demonstrates the main stages of both a complex diagnosis and an attempt at therapy for this aggressive form of intestinal lymphoma.
Assessment of the possible impact of hepatitis viruses on the development and course of autoimmune liver diseases
Authors: Sbikina Evgeniya S. , Vinnitskaya Elena V. , Batskikh Sergey N. , Sandler Yuliay G. , Saliev Kirill G. , Khaimenova Tatyana Yu. , Bordin Dmitry S.
Published: March 2023

Background. Despite the well-studied pathogenesis, the etiology of autoimmune liver disease (AILD) remains unknown.
Aim. To determine the significance of hepatitis A, B, C and E viruses in the development and progression of AILD.
Materials and methods. A single-center case-control study included 139 patients with AILD: autoimmune hepatitis AIH (n=46), primary biliary cholangitis PBS (n=74), primary sclerosing cholangitis PSC (n=19). Median age 56 years, IQR 4865 years. 125 patients without liver disease control group (median age 55 years, IQR 4665 years). Testing of blood serum samples for anti-HAV IgG, anti-HEV IgG, HBsAg, anti-HBc IgG, anti-HCV was carried out by solid-phase ELISA. All patients underwent fibroelastography. Needle liver biopsy 70 patients: AIH (n=37), PBC (n=28) and PSC (n=5).
Results. Ab(IgG) to HAV and HBV were detected in patients with AILD significantly more often than in the control group (74.8% vs 54.4%; p0.001). An increased risk of developing AILD was established in patients with the presence of antibodies to HAV, HBV and HEV (OR 2.491, CI 95% [1.4814.190]). The highest risk of developing PBC was found in patients with antibodies to HAV and HBV (OR 3.008, 95% CI [1.6335.542] and OR 2.515, 95% CI [1.2425.093]). In patients with severe liver fibrosis (F3F4 according to METAVIR), antibodies to HAV and HBV were detected significantly more often than in patients with F0F2 [85% vs 65%; p=0.008].
Conclusion. In our work, we have demonstrated the relationship of past hepatitis A, B, E and AILD, as well as the high risk of developing severe fibrosis in patients with AILD and markers of hepatitis A and B viruses indicates the possible involvement of these viruses in the pathogenesis of AILD.
Dosing Criticism With Praise: E-Feedback in L2 Student Writing
Authors: AKINCI OKTAY Suhan , DAYIOĞLU ÖCAL Seçil
Published: March 2023

The current study deals with e-feedback delivered to the students in higher education during COVID19 pandemic. The data comes from e-feedback delivered to the students in a departmental compulsory course at the department of English language in a state university. Data analysis is conducted in two stages. First, the e-feedbacks classified into three categories regarding the feedback moves by Hyland and Hyland (2012). In the second stage, the categories coded by the two researchers were transferred to SPSS, with the aim of finding out the frequently employed speech act employed by the instructor while giving e-feedback to students. In addition, chi-square test was also conducted to see whether there are significant differences in speech act groups according to the level of success in the study. The findings indicated that the instructor prefers to give e-feedback to unsuccessful students than successful ones using different groups of speech acts such as praise and criticism. Another finding of the study shows that criticism and praise were the most frequently used feedback patterns in our data while suggestion and other feedback acts did not occur frequently. Overall, the study shows the importance of instructor-based e-feedback for academic writing.
Hidden Information in a Thesis Evaluation Rubric: A Civil Engineering case study
Authors: García-Ramírez Yasmany
Published: March 2023

The objective of this article is to analyze the information provided by the rubric for evaluating a thesis for a Civil Engineering degree. For this, it selected forty-one thesis reports from 2018-2022 on the Civil Engineering career at the Universidad Técnica Particular de Loja (Ecuador). Surprisingly, the hidden information in the rubric was a bias from the thesis committee and the student's sex. The academic tool also showed limitations in its evaluation criteria, so it must be restructured or recreated. Administrative situations must be modified because is affecting the principle of the rubric. The procedure used can serve as a reference to evaluate other rubrics in similar areas of knowledge. This study shows the biases that can occur in the thesis evaluation tools and are still in use today.
Habitantes de calle y responsabilidad social
Authors: Dueñas Gaitán Félix Fernando , Peña Garnica Diego Fernando , Acuña Daza Gloria Stella , García Donato Andrea del Pilar
Published: March 2023

La habitabilidad en calle es una problemática social de orden mundial. En Colombia, como ocurre en muchos lugares del mundo, esta se centra principalmente en las capitales o ciudades con altas tasas poblacionales. En este país, este fenómeno social se acrecienta debido a factores como los altos índices de pobreza y desigualdad, y en muchos casos, a causa de los desplazamientos poblacionales del campo a las ciudades resultado del conflicto armado interno. De igual manera, se suman situaciones desfavorables como el desempleo, dependencia a drogas y descomposición de la familia, que son detonantes en el aumento de personas que pasan a vivir en condición de calle.
Comparison of electrocoagulation and chemical coagulation for municipal wastewater treatment
Authors: Susmita Kulagod , Megeri G. B.
Published: March 2023

Municipal wastewater can include many pollutants that have an effect on the environment, so treatment is very necessary before discharge into water bodies and for further recycling in recreation and agriculture. As a result, in this study, municipal wastewater is treated using Electro Coagulation (EC) and Chemical Coagulation (CC), with comparisons of both processes. For EC, aluminum electrodes and iron electrodes were used at different voltages and times. Aluminum sulphate and ferric chloride were used in the CC, along with coagulant dosage and contact time. After treating the municipal wastewater for electrocoagulation, the maximum removal efficiency of COD, TOC, TDS, and BOD is 85%, 87%, 82%, and 81% for the aluminum electrode, respectively and 92%, 92%, 84%, and 88% for the iron electrode, respectively. For chemical coagulation, the maximum removal efficiency of COD, TOC, TDS, and BOD is 81.66%, 80.09%, 84.67%, and 77.08% for aluminum sulphate as a coagulant, and 86%, 83.90%, 87.73%, and 81.8% for ferric chloride as a coagulant. Electrocoagulation was found to be superior to chemical coagulation in this study. And Fe is a very promising electrode compared to Al.
Stabilized pond ash barrier in municipal solid waste landfill
Authors: Bidula Bose , Sudeep Kumar Chand , Maheswar Maharana
Published: March 2023

The bottom liner is placed at the bottommost layer of an engineered landfill. To eradicate the swelling effect of traditionally used clay as liner material, in this research, pond ash is stabilized by using lime and gypsum. In the laboratory, experimental tests such as unconfined compressive strength and falling head permeability are performed to examine the engineering properties of pond ash and make it suitable for use as a construction material in landfill bottom liners. After 180 days of curing, the Unconfined Compressive Strength (UCS) of stabilized pond ash increased significantly, reaching 4.9 MPa and 5.4 MPa for the S6 and S7 samples, respectively. With stabilized pond ash barriers, Municipal Solid Waste (MSW) landfills are considered for this analysis. A significant negative correlation was seen for the relationship between curing time and permeability value of stabilized samples, irrespective of the variety of permeants. Effluent leachate coming out of cured samples was studied for metal concentrations of copper, lead, zinc, arsenic, and the inorganic component magnesium. The metal ions studied in Inductively Coupled Plasma - Optical Emission Spectroscopy (ICP-OES) indicated that the retention of metal ions like copper, lead, zinc, arsenic, and the inorganic component magnesium was increased by the adsorption of trace elements in the liner layer of the landfill. The effluent concentration of trace metals was observed to be well below the permissible limit of inland surface water disposal as per the notification given by the Ministry of Environment and Forest (2000) India, regarding the standard of inland surface water disposal, and less than the allowable limit of the World Health Organization (WHO) in water quality standards.
Land use/land cover change detection using remote sensing and gis based techniques for solani river basin, uttarakhand
Authors: Ashish Aggarwal , Rishabh  , Ekta Singh
Published: March 2023

Land Use/Land Cover (LU/LC) change detection was performed in the Solani river watershed area using multi-temporal remote sensing images (Landsat 8 ETM+ image of year 2014 and Landsat 8 Operational Land Imager/Thermal Infrared Sensor (OLI/TIRS) image of year 2021). Image classification and change detection were carried out for both images using Arc Geographic Information System (GIS) 10.1 and Earth Resources Data Analysis System (ERDAS) Imagine 2016 software. High-resolution Google Earth imagery and Land Remote-Sensing Satellite (LANDSAT) images were used for the accuracy assessment of the classification. The results showed major increments of agricultural fallow land and build-up land of 25.19% and 20.69%, respectively, with the highest decrease in forest cover of 29.27%. Also, to analyze the impact of varying spatial resolution on the Topographic Wetness Index (TWI), two digital elevation models (DEMs) of different spatial resolutions (SRTM, 90m, and Cartosat, 30 m) were used. The results of the study indicated that the mean TWI value increases with an increase in grid size.
Systematic digital signal processing approach in various biometric identification
Authors: K. P. Ajitha Gladis , Sharmila D.
Published: March 2023

Biometrics are unique physical characteristics, such as fingerprints, that can be used for automatic recognition. Biometric identifiers are often classified as physiological characteristics associated with body shape. The goal is to capture a piece of biometric data from that person. It could be a photograph of their face, a recording of their voice, or a picture of their fingerprints. While there are numerous types of biometrics for authentication, the six most common are facial, voice, iris, near-field communication, palm or finger vein patterns, and Quick Response (QR) code. Biometrics is a subset of the larger field of human identification science. This paper explores computational approaches to speaker recognition, face recognition, speech recognition, and fingerprint recognition to assess the overall state of digital signal processing in biometrics.
Molybdenum-based perovskite solar cell with resistance and layer thickness impact on PCE and fill factor
Authors: Ganesh Ram Ratnakar , Rahul Baghel
Published: March 2023

The performance of a perovskite photovoltaic cell based on an active layer of molybdenum trioxide and methyl ester was studied, and the results are described in this research. The FTO/MoO3/perovskite layer/PC60bm-Au is a "Fluorinedoped Tin Oxide: Molybdenum Trioxide: Perovskite Layer: PC60bm (a polycarbonate-based material) and Gold" structure that was subjected to electrical simulation using the General-Purpose Photovoltaic Device Model (GPVDM) software. The effect of series resistance and layer thickness on Power Conversion Efficiency (PCE) and Fill Factor (FF) in a Perovskite Solar Cell (PSC) based on an absorbing layer was examined using the GPVDM program. Adjustments were made by varying the values of series resistance and layer thickness. The results demonstrate that changing the value of series resistance and layer thickness can boost Power Conversion Efficiency (PCE). In this case, it resulted in an increase in Power Conversion Efficiency from 17% to 21% and an improvement in Fill Factor from 66% to 72%.
Dynamic harmonic domain approach to assess performance of three-phase fixed capacitor thyristor controlled reactor (FC-TCR)
Authors: Jayababu Badugu , G. Nageswara Reddy , Kurakula Vimala Kumar
Published: March 2023

Harmonics have become an important issue as the number of non-linear elements and electronic devices coupled to electrical power systems increases by the day. A Fixed Capacitor Thyristor Controlled Reactor (FC-TCR) is widely used in power systems to continuously control reactive power. This paper presents the harmonic analysis of a three-phase FC-TCR under different operating conditions using the Dynamic Harmonic Domain (DHD) technique. The existing Harmonic Domain (HD) method is widely used to obtain the steady-state harmonics in the power grid. It is not possible to calculate transient harmonics using the harmonic domain method. The dynamic harmonic domain technique also provides a solution for the transient condition. The three-phase FC-TCR is simulated in a MATLAB environment and calculates transient harmonic quantities such as apparent power S(t), reactive power Q(t), real power P(t), and distortion power D(t), RMS values, and distortion factors of the three-phase FC-TCR when subjected to voltage disturbance.
Computer-Mediated Feedback in Writing Skill: An Insight
into the Attitudes of English Language Teachers
Authors: Hanife Salbaş , Emrah Ekmekçi
Published: March 2023

Computer-Assisted Language Learning (CALL) has evolved into an integral part of today's classrooms as a direct result of technological advancements. One of the most remarkable outcomes of CALL is the widespread use of Computer- Mediated Feedback (CMF) in classrooms. Notwithstanding that the previous studies have offered an insight into CMF, it has been noticed that the role of teachers in its implementation has received very little attention in the literature. However, the attitudes of teachers have a key role in determining the efficacy of the materials, techniques, and processes that are integrated into instruction. In view of the aforementioned, in this mixed-method research study including 48 participants, the attitudes of English as a Foreign Language (EFL) teacher toward CMF are examined, and the underlying factors are identified. The correlation between academic theory and practise is also analyzed. The findings of this research, which were obtained via Statistical Packages for the Social Sciences (SPSS) Version 26.0 and NVivo, have revealed that the vast majority of teachers have favourable attitudes toward CMF. However, traditional feedback is prioritised over CMF for a variety of reasons. This suggests that the attitudes espoused by teachers are not consistent with their teaching practicum experiences.
Application of Fuel Cells in Energy Storage
Authors: Deepak Sharma
Published: March 2023

Based on a technology that separates power conversion and energy storage, fuel cell energy storage enables each function to be separately tuned for performance, cost, or other key variables. This capacity to tune every component of an energy storage system might provide considerable advantages for many uses. Here, different fuel cell-based energy storage systems are discovered that use hydrogen as the energy storage medium. Electrolyzes are fully regenerative fuel cell systems that are relevant for Polymer Electrolyte Membrane (PEM) fuel cells. The technological and product development status of these systems and the state of various hydrogen storage technology choices will be discussed.
Effect of coding-based instructional interventions on learners' attitudes: A mixed-meta study
Authors: Yunus Doğan , Veli Batdi , Hülya Tüfekci
Published: March 2023

The concept of "21st century skills" has entered our lives in the recent past and has been used to describe the skills that our children should be equipped with while preparing them for the future world. Coding skill, in this regard, is seen as a new 21st century skill that is assumed to be a part of logical reasoning. The main purpose of the present research is to examine the use of coding-based interventions in learning environments from various perspectives and reveal their effects on student attitudes in detail with a research synthesis based on the mixed-meta method. Primarily, a quantitative metaanalysis was used to determine the effects of coding-based practises on student attitudes. Another process that will enrich the content reached in the study and add a qualitative dimension to it is the meta-thematic analysis stage. As a result of the meta-analysis, the effect size reached is moderate (g = 0.555), and the effect of the related practises on the learners' attitude scores is positive. As a result of the meta-thematic analysis carried out in order to further consolidate the findings of the meta-analysis, five major themes emerged: the effect of coding-based instruction on the cognitive dimension, its effect on the affective dimension, its contribution to 21st century skills, its contribution to personal and professional development, and difficulties encountered in coding-based instruction.
Effect of modern civilization on environmental changes and its impact on generation of various pollutions: a case study on bhubaneswar municipality limits
Authors: Banshidhar Sahu , A. Badu Amie , Raghupatruni Bhima Rao
Published: March 2023

Modern civilization requires comforts in lieu of environmental destructions specially due to urbanization. About 30% population of the country live in crowded and densely populated cities. It is due to more employment opportunities, educational, medicare and infrastructural facilities. Population densities, vehicle population, cutting of trees, solid waste coming out from housing units, water quality and so many other reasons have the impact for pollution in cities. The quality of life appears to be more strenuous and stressful. A case study on Bhubaneswar municipal corporation limits has been conducted and suggestions for improvement are given to avoid the catastrophe of environmental degradation.
Impact analysis of feature selection techniques on cyberstalking detection
Authors: Arvind Kumar Gautam , Abhishek Bansal
Published: March 2023

Internet-based applications are making the habitual society and exploring new ways to perform online-based crimes. Numerous cybercriminals are engaged in the different platforms of the internet-based virtual world, carrying out cybercrimes according to predetermined and preplanned agendas. As technology advances, cyberstalking, cyberbullying, and other forms of cyber harassment are growing on social media, email, and other online platforms. Cyberstalking uses internet-based technology to harass, intimidate, and undermine individuals online with different approaches. In order to examine the impact of feature selection strategies for improving model performance, this paper proposes a machine learning-based cyberstalking detection model. The proposed model used the Term Frequency-Inverse Document Frequency (TF-IDF) feature extraction method to extract features, and three distinct approaches, TF-IDF + Chi-Square Test, and TF-IDF + Information Gain, were used to select the different numbers of relevant features. In the cyberstalking detection model, a Support Vector Machine (SVM) was employed for classification purposes. Based on the SVM classifier's performance, each feature selection approach's impact on the various feature sets was assessed. According to experimental findings, the TF-IDF + Chi-Square Test outperformed other applied approaches and improved detection mode performance. Additionally, experimental findings demonstrate that the TFIDF + Chi-Square Test approach also performs better in a small collection of relevant features than other approaches that have been utilized.
Role of technology in advancing agriculture in a digital world
Authors: Surabhi Sinha , Avinash Sarin Saxena , Sumit Kumar Singh
Published: March 2023

The agriculture sector needs precise data and advanced technology in a digitally informed scenario. The agriculture industry is being advanced with the support of information and communication technologies, such as the internet of things. Advanced sensors can be applied for specific agricultural management practices like insect management, disease management, land preparation, irrigation systems, and the control of smart farms and smart greenhouses. The aim is to increase yield, optimize farm inputs, provide market and government policy related information, and enable digital literacy among farmers, which would be helpful in enhancing rural income and sustainable agriculture. It is a need to promote digital interactive information systems in real time, like text messages, mobile apps, or interactive audio-video modes, to provide agricultural information to extension workers, farmers, academicians, and researchers through different means. The use of information and communications technologies, such as blockchain technologies, data mining, and wireless sensors, will definitely help in achieving different goals in sustainable agriculture. This article will provide summarized information related to the benefits and usage of technology in different agriculture sectors.
Numerical Solution of Temperature Profile in Annulus
Authors: Reshu Gupta
Published: March 2023

The model of temperature profile in the flow of non-Newtonian second-order fluid, flowing in an annulus, is investigated. The boundary of annulus is considered porous. Appropriate similarity transformation is used to convert non-linear PDEs into non-linear ODEs. The obtained differential equations are solved numerically. The nature of the temperature profile is presented graphically for the various physical parameters.
Investigating performance of compound heating furnace subject to heating by two elements, high alumina insulation and silicon control rectifier (scr) system at 1600ᴼc
Authors: Ranjib K. Chowdhury , Krupashankara M. S.
Published: March 2023

The present study examines the performance of a resistance heating furnace using two different heating elements, Silicon Carbide (SiC) heating rods and Molybdenum Di-Silicide (MoSi2) heating elements, where SiC rods are used first, starting from the beginning (ambience) temperature of 35ᴼC up to 1300ᴼC, followed by MoSi2 heating elements to raise the chamber temperature from 1300ᴼC to the set temperature of 1600ᴼC. To achieve effective insulation results, newage high alumina (Al2O3), very low thermal conductivity (K), and high density materials such as zirconium tiles, mullite tiles, and zirconium modules, all with such necessary insulation properties sandwiched, are used. Air, a bad conductor of heat transfer, is also used in a gap of 20 mm between two different tiles to lessen heat transfer from the working chamber towards the outer ambience by conduction and radiation to achieve desirable results-maximum thermal efficiency with the least heat loss from the outer surface and to achieve skin temperature equal to the ambient temperature. Also, in this experiment, hot-faced red bricks are used under the hearth in a new design. The system under study consists of a programmable Proportional Integral Derivative (PID), a thyristor power pack, recrystallized alumina tubes, and sensing elements: a thermocouple and Pt-Pt/13%. Rh, semiconductor-based circuit that controls power and current. This makes the system to meet the requirement (step down) and thereby controls voltage automatically with a transformer (depending on the size of the working area, 53 A (I), 220 V for single phase, reduced to 60 V by a step down transformer) auto-current-limiting facilities.
Redesign and weight optimization of chassis and suspension system for a mini tractor
Authors: Tendai Talent Ngwarati , Chikuruwo M. N. H. , Samson Mhlanga
Published: March 2023

Vibration is an ergonomic challenge for tractor drivers in Zimbabwe. A special mini tractor chassis suspension type for towing was designed, and diagrams of simulations of the chassis and suspension were included in this analysis. A design methodology was used that included tools such as reverse engineering, computer-aided engineering software, and finite element analysis. Finite Element Analysis was used to determine the forces that can be attained by the chassis. Material selection was included, and a selected material simulation was performed, which showed favourable results. The chassis is the major component where the engine, gearbox, and all other controls are mounted. The results presented are the structural characteristics of a modern mini tractor chassis attached to suspension leaf springs. Von Mises using Invertor Computer Aided Design (CAD) software was performed to identify critical regions and obtain design modification.
The impact of blockchain in banking and financial services
Authors: Sumi A. M. , Chandrasekar K. S.
Published: March 2023

A blockchain is a Distributed Ledger Technology (DLT) that consists of a growing list of records, called blocks, that are securely linked together using cryptography (Bagrecha et al., 2020). Blockchain has been called the new internet and is fast multiplying and remaking economies, infrastructures, technologies, and enterprises, including those in the financial sector. Banks are denoted as one of the essential pillars or the basic structure of our economy, and it help in the growth and transformation in society. The financial sector acknowledges the transformative influence of blockchain technologies on various actions like forging unique revenue, furnishing operation efficiency, improving end-user experience, and reducing risk in business operations. This paper has intensely explored how blockchain works in banking and financial services.
A comparative study on performance of equity, debt and hybrid mutual fund schemes in india
Authors: Maheswari Y. , P. Raghunadha Reddy
Published: March 2023

The Indian Mutual Fund Industry is segmented and grounded on asset classes (Debt-Oriented Schemes, Equity-Oriented Schemes, Money Market Funds, ETFs and FoFs) and sources of funds (banks, retail investors, Indian institutional investors, FIIs, insurance companies, and other sources). The Average Assets Under Management (AAUM) of the Indian Mutual Fund Industry for the month of February 2022 lay at 39,87,990 crore. The AUM of the Indian MF Industry has raised from 7.20 trillion as on September 30, 2012 to 38.42 trillion as on September 30, 2022 further than 5 fold expansion in a span of 10 years. The MF Industry's AUM has raised from 20.40 trillion as of September 30, 2017 to 38.42 trillion as of September 30, 2022, around a 2-fold expansion in a span of 5 years. The entire number of accounts (or folios, as per mutual fund parlance) as of September 30, 2022, was at 13.81 crore (138.1 million), while the number of folios under equity, hybrid, and solution-oriented schemes, wherein the utmost investment is from the retail segment, stood at around 11.03 crore (110.3 million). The Indian mutual fund industry over the years noted a dramatic improvement in terms of volume as well as quality of the product and service offerings. In this paper, equity, debt, and hybrid mutual fund performance evaluation is measured through statistical ratios like standard deviation, beta, Sharpe's ratio, Jensen's alpha, and Treynor's ratio. All the ratios were calculated based on the daily returns over the last 3 years. The data was taken from the websites, and the yearly return was calculated on the basis of NAV. The results were obtained from a sample of 8 equity funds, 8 debt funds, and 8 hybrid funds. It was found that an investor must take the risk ratios into consideration before investing.
Characterization of magnesium oxide nanoparticle for water-based drilling mud formulation
Authors: Arokya Michael Jenis J.
Published: March 2023

This research is based on the synthesis and analysis to determine the efficiency and cost effectiveness of nanoparticle materials used in drilling fluid during oilfield exploration process. The study was carried out in the formulation of a waterbased drilling fluid, in which the prepared additives were treated with magnesium oxide (MgO) nanoparticles. The rheological properties of nanoparticle materials, such as flow time, viscosity, shear rate, shear stress, torque difference, and separation of solids and liquids, have been determined. The study also analyzed the fluid loss with respect to time in a manual filter press for low temperature and low pressure versus high pressure and high temperature using filter press hydraulic dead weight assembly in high temperature and high pressure. The nanoparticle used for the study was characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffractometer and particle size analyzer. Viscosity parameters were optimized using a multi-speed viscometer, lubricity tester and pH meter at effective concentration, as well as contact time, temperature and pressure changes as a function of concentration. The study suggests the use of MgO nanoparticle as an additive for water-based mud exploration in oilfields.
Characterization of Copper MMC Reinforced with SiC and Graphite in Equal Proportion Made by the Powder Metallurgy Route
Authors: Rama Krishna Varma Lanke , Srinivasulu Arnuri , Swami Naidu Gurugubelli , Gowtham Satya Swaroop Akkarrapu
Published: March 2023

Powder metallurgy is playing a very important role in the manufacturing industry. In this research, an attempt is made with copper Metal Matrix Composites (MMC) reinforced with an equal proportion of Silicon Carbide (SiC) and graphite powders. The powders are taken in such a way that the reinforcement weight percentage varies from 0 to 10%. The materials are fabricated through the powder metallurgy route. The powder mixtures are blended and then compacted with a uniaxial pressure of 500 MPa to make the green compacted composites with different compositions. The dimensions of all samples are 25 mm x 16 mm x 16 mm, with an average weight of 40 g. Compacted green samples are sintered by the inert gas sintering process. Sintering is performed at 8000C in an inert argon gas furnace for 120 minutes for all the samples. The obtained samples are made suitable for different tests like porosity, the Vickers hardness test, the wear test, Raman spectroscopy, Scanning Electron Microscopy (SEM), and Energy Dispersive X-Ray (EDX) Analysis. From the values obtained from the hardness test, it is observed that for all MMCs, the minimum value is obtained at Cu-4% (SiC+Gr) and the maximum value at Cu-8% (SiC+Gr), and in between these percentages of composition, there is a little bit of an increase and decrease in values. Wear test results give the maximum wear rate at Cu-4% (SiC+Gr) and the minimum wear rate at Cu-8% (SiC+Gr). Raman spectroscopy test results are given the calculations of Full Width at Half Maximum (FWHM), depth of incident, absorbance, and Id/Ig values, and they are better at 8% of SiC+Gr, which gives the indication of good bonding between molecules of the powder particles. Image analysis is performed using optical microscopy, SEM, and EDX. The microstructures were revealed in such a way that there was good correlation between the properties at different compositions.
Optimization of Al 6063 Button Head Rivet FEM Analysis Subjected to CRYO ECAP and RT ECAP
Authors: Gorsa Jayaram , Srinivasulu Arnuri , Gurugubelli Swaminaidu , Varri Vinay Kumar
Published: March 2023

The severe plastic deformation technique that has attracted much attention from the material community in recent years is Equal Channel Angular Pressing (ECAP). By using this technique, ultrafine-grained microstructures can be produced without a significant change in the geometry of the material. In the present research, an aluminum 6063 sample was tensile tested after the ECAP process to know the properties of the material. ECAP is performed for two sets of specimens in which the channel angle is 108. One set of samples is at room temperature, and the other set is at -197oC, i.e., dipped in liquid nitrogen for 20 minutes. Tensile properties of the obtained samples are tested once more. The tensile test properties of samples, i.e., before processing and after Room Temperature (RT) and CRYO ECAP, are tabulated and saved for simulation. A rivet with American Society for Testing and Materials (ASTM) dimensions is designed using a design modeller in Analysis of Systems (ANSYS), and the properties obtained from the tensile tests are assigned to the rivet. One end of the rivet is constrained with a fixed support, and the other end is loaded with 35 kN in the downward direction. The process is repeated for three different sets of samples. The developed stresses in the three rivets are tabulated and correlated, and the results are drawn in the present investigation, which showed good correlation.
Evaluation and Comparison of Turning Process Performance during Machining of D2 Steel Material under Two Sustainable Machining Techniques
Authors: V. Chengal Reddy , Marupudi Mouneesh Kumar , Nishkala T. , S. M. Jameel Basha
Published: March 2023

In the present work, two sustainable machining techniques namely Minimum Quantity Lubrication (MQL) and dry machining were investigated during turning of AISI D2 steel material using tungsten carbide tools. Cutting velocity, feed rate and depth of cut were considered as turning process variables whereas cutting temperature, tool rake wear, tool flank wear and surface roughness were taken as turning process performance characteristics for investigation purpose. Based on the obtained results it was found that MQL machining technique significantly controlled the cutting temperature, tool rake wear, tool flank wear and surface roughness values to a maximum of 46%, 22%, 23% and 35% when compared to dry machining condition. It was noticed that MQL cooling technique uses tiny quantity of coolant and contributes for sustainable requirements in present industry. Further, it was observed that more chip entanglement marks as major surface defectives and edge chipping as major tool wear mechanism in dry machining.