bluuebunny/crossref_metadata_2025 huggingface dataset:
ONE POT DEVELOPMENT OF LIPID-BASED QUERCETIN SPHERICAL AGGLOMERATES FOR BIOAVAILABILITY ENHANCEMENT: IN VITRO AND IN VIVO ASSESSMENTS
Authors: MISHRA RAKESH , KULKARNI SHWETA , AHER AKASH
Published: May 2023

Objective: Quercetin, a wonder flavanoid despite numerous pharmacological actions, has limited clinical applications due to solubility and permeability issues and additionally having shorter biological half-life. The goal of the current work was to design Quercetin lipid-based spherical crystals, to improve its oral bioavailability and sustain its in vivo plasma levels.  Methods: An anti-solvent precipitation method was employed to prepare quercetin spherical agglomerates using ethanol and distilled water as good and bad solvents, respectively. As bridging liquid chloroform, dichloromethane, hexane and gelucire 43/01, compritol 888 as lipid carrier were screened. The drug-to-lipid polymer proportion and stirring speed effect were optimized by 3-level, 2-factor, experimental design. Numerical optimization function was employed to identify the optimum level of independent variables. Spectroscopic, micromeritic, surface morphology, size distribution, saturated solubility, in vitro dissolution, in vivo pharmackokinetic and stability studies were performed. Results: Surface morphology studies indicated the agglomeration of quercetin needle-like fragments into a spherical shape, which further showed smooth surfaces due to entrapment of QC in lipid carrier. The spherical agglomerates of quercetin showed a four-fold improvement in aqueous solubility compared to pure drug and showed 92.13% release in 8 h. The optimised formulation showed a 3.69-fold enhancement in relative bioavailability in contrast to the marketed preparation in an in vivo pharmacokinetic analysis in male Wistar rats. Conclusion: The obtained lipid-based spherical crystals of quercetin with enhanced bioavailability could be effectively used for its various potential pharmacological applications. The designed system can also be utilized to deliver other phytochemicals with poor bioavailability due to limited solubility and permeability.
FORMULATION DEVELOPMENT, OPTIMIZATION, AND EVALUATION OF LANSOPRAZOLE LOADED NANOSUSPENSION
Authors: NEMADE LALITA S. , PATIL MORESHWAR P.
Published: May 2023

Objective: To address issues with drug release, manufacturing, and drug product stability, the primary objective of this study was to optimize the solubility of poorly soluble lansoprazole medication by using an appropriate nanosuspension formulation. Methods: The freeze-drying (nanopure) method was used to create lansoprazole nanosuspensions. The formulation and process variables affecting the properties of nanosuspensions (mannitol concentration, drug concentration, and PVP-K30 concentration) were optimized. Particle size, shape, zeta potential, drug content, stability study, and in vitro drug release study were performed on the nanosuspensions. Results: Out of different batches of nanosuspension, batch F4 displayed the most optimizing parameters, i.e., drug content 97±1.2%, average particle size 125.5 nm, polydispersity index 0.361, and zeta potential-22.7 mV. In comparison to other formulations, the PVP-K30 polymer in F4 demonstrated an effective cumulative drug release of 120 min. In stability studies, optimized nanosuspension displayed favorable results and demonstrated significant stability for the said period of time. Conclusion: The most promising drug release profile was shown by the optimized (F4) nanosuspension, which also demonstrated increased lansoprazole solubility. We have concluded from the current study that nanosuspension can serve as a better formulation for lansoprazole delivery.
POTENTIAL ACTIVITY OF KAEMPFEROL AS ANTI-PARKINSON’S; MOLECULAR DOCKING AND PHARMACOPHORE MODELLING STUDY
Authors: MAHFUDIN UMIL , SUBARNAS ANAS , WILAR GOFARANA , HERMANTO FAIZAL
Published: May 2023

Objective: This study examined molecular docking and pharmacophore modeling to evaluate the potential antiparkinson activity of Kaempferol on various types and classes of receptors.
Methods: The molecular docking was performed on various classes of receptors, namely transcription factor Nrf2, A2A Adenosine, and catechol-O-methyl transferase, using auto dock 4.0.1 software.
Results: Kaempferol exhibited potential effects on two of the three tests (A2A adenosine and COMT receptors) as indicated by the lowest free energy binding values (-5.42 kcal/mol,-7.16 kcal/mol, and-8.33 kcal/mol, respectively). Kaempferol also had lower inhibitory constant values on transcription factor Nrf2, A2A adenosine, and COMT receptors (106.06 µM, 5.63 µM, and 779.51 nM, respectively). Kaempferol and the natural ligand had similar functional groups according to the critical components of the interaction between amino acid residues. The pharmacophore modeling revealed that hydroxyl functional groups strongly interact with crucial amino acid residues of the receptors.
Conclusion: This study concludes that kaempferol is a potential antiparkinson agent against multiple receptors.
Automatic Car Number Plate Detection System Using OpenCv
Authors: Apte Sharv , Chafekanade Shashank , Deore Atharva , Deshmukh Aneesh , Deshpande Isha
Published: May 2023

bstract: Automatic Number Plate Recognition (ANPR) is an issue that has received a lot of attention and has a lot of successful solutions. Due to the differences in number plate features around the world, these solutions are typically tailored for a specific environment. These attributes are employed in number plate recognition algorithms; thus, a universal solution would be difficult to achieve because the image analysis techniques used to develop these algorithms cannot guarantee 100% accuracy. This research focuses on a proposed method that is optimal for all types of car number plates. The program, which is implemented in Python and uses the OpenCV library, locates the plate by combining edge detection and Feature Detection approaches with mathematical morphology. EasyOCR python package was used to identify the characters on the license plate that were detected.
Smart Platform for PUC Vendors about PUC Expiration & Reminders
Authors: Gulhane Dr. Vijay
Published: May 2023

Abstract: Air pollution caused by vehicular emissions is a significant environmental and public health concern, and regulatory measures, such as Pollution Under Control (PUC) certificates, are implemented to monitor and control vehicle emissions. However, the majority of the people fail to renew their PUC certificates because they don’t get any reminders, unlike reminders sent by insurance companies, The PUC vendor have to manually send the PUC expiration reminder message to the client. The PUC vendors often have to keep track of their clients using notebook and pen and manually check the expiration dates of certificates daily, which can be a time-consuming and error-prone process. These inefficiencies can lead to a poor customer experience, increased workload for PUC vendors, resulting in lack of compliance with PUC regulations and potential fines. The proposed platform provides a smart and innovative online platform designed specifically for PUC vendors to streamline their operations and improve compliance with PUC regulations. The platform is built using the MERN (MongoDB, Express.js, React, Node.js) stack, providing a modern and scalable solution for PUC vendors to manage their clients and send PUC expiration reminders via SMS and WhatsApp
Wireless Power Transmission on Tesla Principle
Authors: S Firdosh Parveen , Divya A Sai , K Sahana , Chandrashekar N , B Affifa Aiman
Published: May 2023

Abstract: A Tesla coil is a device used for obtaining high voltage at high frequency. The initial purpose its creator, Nikola Tesla, envisioned for it was to transmit wireless energy; advances in electronics have helped people build Tesla coils that can produce music, the lightning bolts acting like a speaker. Nowadays, this device is used for research and special effects. However, we argue that such a device is also very useful in transmitting power wirelessly. The scope of the project is to be able to present concepts in physics, Transmit the power wirelessly! Consequently, in this project we will present the concept of wireless electricity and eliminate limitation of wireless electricity transmission
Crime Rate Prediction Using Naive Bayes and KNN Algorithm
Authors: . Subhashini , Kumari Neha , Kumari Rimjhim , Singh Mayank Kumar , Banoth Mr. Sreenu
Published: May 2023

Abstract: The criminal cases are increasing rapidly in our country due to which number of pending cases are also piling up. The continuous increase in the criminal cases is proving that it would be very difficult to be classified and to be solved. Recognizing the criminal activity patterns of a place is very important in order to prevent it from happening any other case. The crime solving agencies are doing a better work and can do a better work if they have a good knowledge of the pattern of criminal activities that are happening in a particular area or region. This problem can only be done by using machine learning any by using different algorithms to find the patterns of the criminal activities in a particular area or region. Data pre-processing is as important as final prediction and label encoding to clean and nourish the data. This research paper gives an efficient machine leaning model using different algorithms for predicting the next criminal case of the country
Conductas sociales y de salud de la adolescencia representadas en TikTok
Authors: Leiva Castillo Jacqueline , Rabanal Carrasco Mariela , Cabrera Palma Daira , Canales Abarca Javiera , Gormaz Aguirre Marielle , Meza Espinoza Javiera , Morandé Morales Valeria
Published: May 2023

Objetivo: Comprender las conductas sociales y de salud asociadas en adolescentes entre 13 y 19 años a través de la red social TikTok, en Chile en el año 2021. Metodología: Se ubica en el paradigma positivista y se enfoca mediane teoría fundamentada. Se seleccionaron 50 videos de carácter público en la plataforma social y se realizó análisis documental bajo codificación abierta. Resultados: Los y las adolescentes le dan gran importancia a su imagen corporal, destacándose el uso de filtros en todos ellos, mientras que la vestimenta presentó una tendencia según el género. Por otro lado, las expresiones manifestadas son en su mayoría positivas; los recursos sonoros utilizados para los videos son variados, siendo el más utilizado la música; el principal tipo de contenido visualizado es baile, seguido de humor; las opiniones más frecuentes fueron positivas y las conductas en salud tendieron a ser no promotoras. Conclusión: Las representaciones sociales construidas por adolescentes en TikTok están fuertemente marcadas por los estereotipos de belleza, la necesidad de la aceptación entre pares y la búsqueda de la popularidad en redes sociales. Las conductas promotoras de salud en esta red social son escasas.
Assessment of The Risk Factors for Statin-Related Myopathy in the Indian Population
Authors: Kiranmayee A. , Sunder R.Shyam , Kumar Dr.B.Dinesh
Published: May 2023

Statins are widely used hypolipidemic drugs with limitations due to myopathy. Several comorbid factors act as predisposing factors for statin-related myopathy (SRM) and are rarely studied in the Indian population. In this study, we aim to understand the various risk factors involved in the occurrence of SRM, which may give insight towards the management of statin intolerance. A cross-sectional and non-interventional clinical study with 700 subjects, both statin and non-statin users, was conducted. Subjects were enrolled after ethical approval and informed consent. Information on case report forms and blood samples for clinical chemistry investigations were collected. SPSS version 21 was used to collect and analyze data. Based on statistical analysis, we found myopathy in statin users (19%), nonstatin users (11%), and total subjects (16%), respectively. No significant association of myopathy was observed with the female sex, differences in food habits, physical activity, alcohol intake, or comorbid factors like diabetes and hypertension. Smoking is associated with myopathy in pooled subjects, whereas age (>60) is associated with myopathy in statin users. Slight differences in mean values of bilirubin and alanine transferase were observed between myopathic and non-myopathic subjects. Therefore, the study demonstrates that smoking is related to myopathy regardless of statin usage. Statin users over 60 were shown to be at a greater risk for myopathy than non-statin users.
Farklı Ağaç Talaşları ile Dumanlamanın Türk Somonunun Duyusal ve Mikrobiyolojik Kalitesine Etkileri
Authors: Bilgin Şengül , İzci Levent , Sürengil Göknur , Umut Fahriye
Published: May 2023

Bu çalışmada Türk Somonu olarak adlandırılan ve Karadeniz’de yetiştiriciliği yapılan gökkuşağı alabalığı (Oncorhynchus mykiss), kiraz (K), erik (E), ve elma (A) ağacı talaşları kullanılarak sıcak dumanlama işlemine tabii tutulmuş ve sonrasında 3 ± 1°C’de depolanmıştır. Dumanlanmış Türk Somonunun depolama süresince; mikrobiyolojik (toplam mezofilik aerobik bakteri-TMAB, toplam psikrofilik aerobik bakteri-TPAB, Listeria monocytogenes, maya-küf-MK) ve duyusal (renk, koku, tat, tekstür ve görünüş) analizleri yapılmıştır. Ürünlerin mikrobiyolojik analizlerinden elde edilen sonuçlara göre; çiğ balıketinde TMAB sayısı 2,5±0,02 log KOB/g, TPAB 2,1±0,08 log KOB/g, MK 2,4±0,03 log KOB/g, olarak tespit edilmiş olup, sıcak dumanlama işleminin mikroorganizma grupları üzerinde inhibe etkisi gözlenmiştir. Depolamanın sonunda kiraz, erik ve elma talaşı ile dumanlanmış Türk Somonlarında TMAB, TPAB ve MK sayıları sırasıyla 7,85±0,23, 7,48±0,63, 7±0,72; 7,5±0,86, 7,21±0,97, 6,98±0,88; 3,1±0,28, 2,78±0,40, 2,59±0,60 log KOB/g olarak bulunmuş, L. monocytogenes tespit edilmemiştir. Duyusal analiz sonuçlarından, koku ve tekstür açısından farklı talaş kullanımının etkisinin önemsiz olduğu saptanmıştır (p>0,05). Depolamanın sonunda, A grubu örneklerinin mikrobiyolojik ve duyusal olarak en iyi kaliteye sahip olduğu belirlenmiştir.
Tendencias investigativas en el área de historia empresarial: una aproximación bibliométrica
Authors: Bermeo-Giraldo Maria Camila , Mosquera González Davinson , Moreno López Gustavo Adolfo , Rodríguez Zavala Luisa
Published: May 2023

En el mundo de hoy, se considera fundamental estudiar el área de los negocios, esto debido a la incertidumbre y a los múltiples actores que conforman el entorno empresarial y los diferentes mercados. En años recientes, el campo de la historia empresarial ha presentado un interés creciente por parte de los investigadores, pero aún no son claras las tendencias investigativas en esta área de conocimiento. El objetivo de este estudio consistió en identificar las tendencias y evolución investigativa en historia empresarial a partir de un estudio bibliométrico de la producción científica registrada en la base de datos Scopus. La metodología se basó en la realización de un análisis de indicadores bibliométricos de calidad y cantidad y en un estudio de evolución y tendencias sobre la producción científica registrada en Scopus en el periodo comprendido entre 1934 y 2022, donde la selección de los registros se llevó a cabo con base en los criterios de la metodología PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses). Los resultados señalaron que existía relación entre los indicadores bibliométricos de cantidad y calidad (impacto); así, las revistas: Bussinnes History, Business History Review, Management and organizational History, Business History around the World, Enterprise and Society, The Oxford Handbook of business History; los países: Estados Unidos, Reino Unido, Italia, Alemania, Canadá, Australia, Francia y España; y, los autores: Jones G., Casson M, Colli A., y Toms S., se revelaron como los más representativos y con mayor impacto en el campo de la historia empresarial. Se concluye que los tópicos más utilizados y actuales son metodología e historia económica, y algunos de los términos emergentes son longevidad organizacional, métodos de investigación, grupos empresariales, historia corporativa, narrativas, emprendimiento e historia ambiental. Finalmente, el estudio propone una agenda de investigación sobre este campo de conocimiento.
¿Una Nueva Gestión Pública para el Sistema de Salud Colombiano?
Authors: López-Mallama Oscar Marino
Published: May 2023

En este trabajo se revisarán los rasgos centrales de los enfoques de la gestión pública: la Administración Pública Progresiva y la Nueva Gestión Pública. Se argumenta que esta última no representa solo una evolución técnica, sino que responde a nuevos contextos históricos y premisas teóricas y políticas. Se revisará la manera en que algunas directrices de la Nueva Gestión Pública se expresan en las reformas de los sistemas de salud de América Latina, particularmente en el caso Colombiano. Esto permitirá comprender la manera en que estas directrices se están implementando en los servicios de salud, y valorar en qué aspectos favorece o limitan el ejercicio del derecho a la salud de la población Colombiana.

Según la Ley 100 de 1993, la Seguridad Social Integral es el conjunto de instituciones, normas y procedimientos, de que disponen la persona y la comunidad para gozar de una calidad de vida, mediante el cumplimiento progresivo de los planes y programas que el Estado y la sociedad desarrollen para proporcionar la cobertura integral de las contingencias, especialmente las que menoscaban la salud y la capacidad económica, de los habitantes del territorio nacional, con el fin de lograr el bienestar individual y la integración de la comunidad.

La realización de este estudio pretende identificar el enfoque de la Nueva Gestión Pública - NGP en el Sistema de Salud de Colombia y su influencia en las reformas sanitarias del País luego de la implantación del Sistema General de Seguridad Social en Salud - SGSSS
University academic writing for international students: A usage-based approach
Authors: Moder Carol , Avalos-Rivera Alys , Horton Ho'omana , Kinfe Miriam , Sims Paul , French Seth , Zhao Yelin
Published: May 2023

This resource is designed specifically to meet the academic writing needs of international students studying at universities in the United States. The materials in the book can be covered within a 14-week semester, but each chapter or section may also be used independently.Based on a series of needs analysis projects, this resource provides an overview of major rhetorical patterns of writing that are commonly used in university settings in the United States. These commonly required genres include descriptive and evaluative summaries, short essays, comparison and contrast assignments, literature reviews, descriptive reports, and proposals. The resource includes chapters that address the structure and purpose of these more common genres, including an awareness of the ways that the target audience and situation should shape the writing of each.
Writing spaces at Oklahoma State University
Authors: Daniel Joshua , Essmiller Kathy , DiFrusio Mark , Tinsley Natasha , Meints Josiah , O'Neil Courtney , Howard Dane , Recchia Roseanna
Published: May 2023

This resource focuses on the various processes involved in researching answers to various inquiry questions and building effective arguments within and outside academic contexts. The curriculum takes students through the processes of listening/summarizing, asking questions, characterizing scholarly debates, and entering those debates in order to meaningfully contribute to ongoing conversations.
Journeying towards best practice data management in biodiversity genomics
Authors: Forsdick Natalie , Wold Jana , Angelo Anton , Bissey François , Hart Jamie , Head Mitchell , Liggins Libby , Senanayake Dinindu , Steeves Tammy
Published: May 2023

Advances in sequencing technologies and declining costs are increasing
the accessibility of large-scale biodiversity genomic data sets. To
maximise the impact of these data, a careful, considered approach to
data management is essential. However, challenges associated with the
management of such data sets remain, exacerbated by uncertainty among
the research community as to what constitutes best practices. As an
interdisciplinary team with diverse data management experience, we
recognise the growing need for guidance on comprehensive data management
practices that minimise the risks of data loss, maximise efficiency for
stand-alone projects, enhance opportunities for data reuse, facilitate
Indigenous data sovereignty and uphold the FAIR and CARE Guiding
Principles. Here, we describe four personas reflecting user experiences
with data management to identify data management challenges across the
biodiversity genomics research ecosystem. We then use these personas to
demonstrate realistic considerations, compromises, and actions for
biodiversity genomic data management. We also launch the Biodiversity
Genomics Data Management Hub
(https://genomicsaotearoa.github.io/data-management-resources/),
containing tips, tricks and resources to support biodiversity genomics
researchers, especially those new to data management, in adopting best
practice. We aim to support the biodiversity genomics community in
embedding data management throughout the research life cycle to maximise
research impacts and outcomes.
The effect of the Satureja montana ethanol extract on the morphological changes of erythrocytes
Authors: Marin Marija , Brankovic Snezana
Published: May 2023

The present study investigated the antioxidant activity of ethanol extracts
of the leaves of Satureja montana and their influence on the membrane
stability of erythrocytes ex vivo. The ethanol extracts showed a very potent
antioxidant activity of EC50 = 0.055mg/ml. Rat blood samples were treated
with 96% ethanol extracts in different concentrations of 100 ?g/ml, 200
?g/ml, and 300 ?g/ml, and morphological analyses were carried out. The
results showed significant differences in the shape of the erythrocytes
incubated with higher extract concentrations. Considerable morphological
changes were observed at a concentration of 200 ?g/ml which was
characterised by the highest percentage of stomatocytes, while the highest
percentage of echinocyte formation was observed at a concentration of 300
?g/ml. The results of this investigation indicated that the ethanol extracts
of S. montana exhibited a possible protective effect on the membrane
stability of erythrocytes.
Boron toxicity tolerance in barley may be related to intrinsically higher levels of reactive oxygen species in the shoots
Authors: Çatav Şükrü , Çetin Eda , Vural Emre , Bürün Betül
Published: May 2023

There is considerable intra-and interspecific variation in boron (B) toxicity
tolerance in crop plants. In this study, we aimed to investigate the
mechanisms involved in tolerance to excess B in barley (Hordeum vulgare) in
the early stages of plant development. To do this, B-sensitive (B?lb?l-89)
and B-tolerant (Tarm-92) barley cultivars were grown hydroponically under
control and B stress conditions (10 mM H3BO3) for 4 or 7 days. The hydrogen
peroxide (H2O2), malondialdehyde (MDA), total phenolic, total flavonoid,
anthocyanin, proline, and total sugar contents, as well as DPPH radical
scavenging capacity, were then determined for both cultivars. Our results
showed that B treatment led to significant increases in the B concentration
of the barley cultivars for both exposure times. However, there were no
drastic differences in the B concentration of the roots and shoots between
the sensitive and tolerant cultivars. While the dry root weight of B?lb?l-89
was reduced after 7 days of B stress (p < 0.05), such a decrease was not
observed in Tarm-92. The H2O2, MDA, proline, total sugar, and anthocyanin
contents of both cultivars increased considerably in response to excess B
during at least one treatment period (p < 0.05). The H2O2 content of Tarm-92
under control and B stress conditions was significantly greater than that of
B?lb?l-89, but there was no difference in the MDA content and radical
scavenging capacity between the two cultivars. Finally, a 35% increase was
found in the total flavonoid content of the Tarm-92 seedlings exposed to B
stress for 4 days. In conclusion, the findings of this study suggest that
tolerance to B toxicity in barley seedlings may be related to their capacity
to tolerate higher levels of reactive oxygen species.
The alpine scrubs and dwarf heaths of the Balkan Peninsula - an exceptional center of floristic richness and endemism
Authors: Ilic Tijana , Kuzmanovic Nevena , Vukojicic Snezana , Lakusic Dmitar
Published: May 2023

Alpine scrubs (Roso pendulinae-Pinetea mugo) and dwarf heaths (Loiseleurio procumbentis-Vaccinietea) are an exceptional assemblage of rich floristic units which contribute significantly to the overall diversity on the Balkan Peninsula. The main edificators of these types of habitats are mostly glacial relicts. Additionally, they are of the arctic, alpine, and boreal distribution types, which further emphasises their importance from the conservation point of view. We investigated their taxonomic richness, endemism, patterns of spatial distribution and diversification in the central Balkans as well as their coenotic composition using a comprehensive dataset (15,609 species occurrence data). The analyses were conducted at three hierarchical levels taking into account the ecological and geographic diversity of the alpine scrubs and dwarf heaths in the study area. The results obtained showed that in the alpine scrubs and dwarf heaths of the central Balkans 902 taxa (829 species and 73 subspecies) had been recorded, and that the proportion of endemics in these habitats is extremely high (ca. 22%). Our results further showed that in 180 randomly selected plots of medium size (? 10 and < 100 m2), the registered regional floristic richness for the unique sample size was 527 species, placing the alpine region of the Balkan Peninsula in second place among the richest alpine regions in the world. Moreover, significant regional differences in species composition were observed within the research area, with floristic richness and diversity increasing from north to south.
New records and noteworthy data of plants, algae and fungi in SE Europe and adjacent regions, 11
Authors: Sabovljevic Marko , Tomovic Gordana , Niketic Marjan , Denchev Teodor , Denchev Cvetomir , Sabovljevic Aneta , Ștefănuț Sorin , Tamas Gabriela , Szeląg Zbigniew , Assyov Boris , Savic Dragisa , Janosík Lukás , Dudás Matej , Kolarcik Vladislav , Veljkovic Milorad , Djordjevic Vladan , Sovran Sanja , Knezevic Ana , Dimitrov Desislav , Papp Beata , Pantovic Jovana , Lazarevic Predrag , Kabas Eva , Kutnar Lado , Kermavnar Janez
Published: May 2023

This paper presents new records and noteworthy data on the following taxa in
SE Europe and adjacent regions: red algae Sheathia confusa, parasitic fungus
Anthracoidea caryophylleae, mycorrhizal fugus Hydnellum caeruleum,
bryoparasitic fungus Octospora erzbergeri, liverwort Cephaloziella
baumgartneri, mosses Hamatocaulis vernicosus, Streblotrichum convolutum var.
commutatum and Ulota crispula, monocots Ophrys bertolonii subsp. bertolonii,
Ophrys scolopax subsp. cornuta and Spiranthes spiralis and dicots Androsace
hedraeantha, Hieracium mrazii, Ramonda nathaliae and Triglochin palustris
are given within SE Europe and adjacent regions.
New records and noteworthy data of plants, algae and fungi in SE Europe and adjacent regions, 12
Authors: Tomovic Gordana , Sabovljevic Marko , Assyov Boris , Kutnar Lado , Boycheva Petya , Ivanov Dobri , Papp Beata , Pantovic Jovana , Sabovljevic Aneta , Sabanovic Elvedin , Jovanovic Filip , Sovran Sanja , Knezevic Ana , Aleksic Gordana , Niketic Marjan , Shivarov Veselin , Yaneva Galina , Ștefănuț Sorin , Bîrsan Constantin-Ciprian , Szeląg Zbigniew , Djordjevic Vladan , Kabas Eva , Dudás Matej , Kolarcik Vladislav
Published: May 2023

This paper presents new records and noteworthy data on the following taxa in
SE Europe and adjacent regions: red algae Hildenbrandia rivularis,
saprotrophic fungus Cryptomarasmius corbariensis, lichenised fungi Lecanora
stenotropa, Micarea misella and Sticta sylvatica, liverworts Fossombronia
caespitiformis and Peltolepis quadrata, mosses Dicranoweisia cirrata and
Fissidens exilis, horsetail Equisetum ? moorei, gymnosperm Juniperus
virginiana, monocots Galanthus reginae-olgae subsp. vernalis and Spiranthes
spiralis and dicots Linaria pelisseriana, Parthenocissus quinquefolia,
Pilosella rhodopea and Taraxacum erythrospermum are given within SE Europe
and adjacent regions.
Nucleolar number variation in Fritillaria (liliaceae) taxa from Greece
Authors: Samaropoulou Sofia , Bareka Pepy , Kanas Aggelos , Kamari Georgia
Published: May 2023

The current study aims to estimate the most frequent number of nucleoli in taxonomically interesting Fritillaria species. Silver nitrate staining is applied using a modified protocol in 14 taxa and one hybrid from 17 populations from Greece. This is the first report of the number of nucleoli for all the Fritillaria taxa studied here. In general, the number of nucleoli ranges from 0-8, with Fritillaria pontica and F. theophrasti characterised by the greatest number of observed nucleoli. The results reinforce the classification of taxonomically intriguing taxa, such as Fritillaria sporadum and F. theophrasti, as distinct species, even though they have recently been considered synonyms of F. ehrhartii and F. pontica, respectively.
Remittances-finance-growth trilogy: Do remittance and financial development complement or substitute each other to affect growth in Nigeria?
Authors: Dada James , Akinlo Taiwo
Published: May 2023

The study examines the absorptive role of financial development in the remittance-growth nexus in Nigeria between 1986-2017. In particular, the shortrun, long-run, and causal links between remittances, financial development, and economic growth in Nigeria are investigated using an autoregressive distributed lag bounds test and vector error correction Granger causality. The result shows that financial development and remittances contribute positively to economic growth. Furthermore, findings from the moderating role suggest that financial development and remittances serve as substitutes to affect growth in the short run; however, financial development and remittances perform a complementary role in influencing economic growth in the long run. In addition, the causality tests indicate a one-way relationship from economic growth to financial development as well as bidirectional causality between remittances and financial development in the short run, while financial development and remittances Granger cause economic growth in the long run. The outcome of this study suggests there are time lags in the relationship between remittances, financial development, and economic growth in Nigeria. The implications of the findings are discussed.
Analysing the Armey curve based on the Fourier cointegration approach for Turkey
Authors: Kasal Suleyman
Published: May 2023

One major theoretical and empirical issue that has dominated fiscal policy
for many years concerns the optimal size of government. Armey (1995)
believes that the relationship between government expenditure and economic
growth is an inverted U-shape, arguing that there is an optimal point where
government expenditures maximise economic growth. The primary objective of
this study is to investigate the validity of the Armey curve for Turkey in
the period 1998:Q1-2020:Q4 using the Fourier cointegration method. The study
has found that the Armey curve is valid for Turkey. The evidence indicates
that the optimal size of government in Turkey is equal to approximately
18.5% of GDP. This paper highlights that the notion that government
expenditure increases economic growth should not be seen as the only policy
option. A key policy priority should therefore be to design fiscal policies
that take into account this non-linear relationship.
Ab-initio combined the Calphad approach to the phase equilibria in the ternary Ti-Mo-N system
Authors: Daclan R.A. , Mena M.G. , Vasquez M.R. , Gierlotka W.
Published: May 2023

The ternary Ti-Mo-N system is an important material used as a surface coating, hardener, and wear and corrosion protection layer. Knowledge of the phase equilibria, phase transformations, and phase stabilities of this alloy is important to realizeits potential applications. In this paper, formation energies of three intermetallic compounds, Mo2N-beta, Mo2Ngamma, and MoN-delta, were determined by ab-initio calculations.Then , the Calphad approach was applied to thermodynamically model the Mo-Ti, Mo-N, and Mo-Ti-N systems. The obtained Gibbs energies were used to calculate the phase diagram and thermodynamic properties of the Ti-Mo-N system. The present model is in good agreement with experimental data reported in the literature. The results of this work can be used as a basis for future investigations of the Ti-Mo-N system, as well as a basis for practical industrial applications.
Large Bowel's tumor of unclear histogenetic origin from the group of neuroendocrine tumors with life-threatening hemorrhage and hemorrhagic shock
Authors: Zogic Enes , Detanac Dzenana , Brnicanin Kemal , Detanac Dzemail , Marovac Sead
Published: May 2023

Introduction. Neuroendocrine neoplasms (NENs) of the gastrointestinal tract (GIT) are slow-growing and rare tumors with different clinical, histological, and biological characteristics with an increased incidence in recent years. Most of them are indolent and colonic NENs are rare among all GIT-NENs. Compared to colorectal adenocarcinoma neuroendocrine tumors of the colon and sigmoid colon are uncommon. Case outline. We present a 25-year-old female patient, who was admitted to our department in hemorrhagic shock due to life-threatening bleeding from a tumor on the sigmoid colon, and after unsuccessful endoscopic hemostasis during colonoscopy. The complaints started the day before admission to the ward with hematochezia. The patient had no complaints before that. Emergency operation and colon resection with terminal colostomy were performed. Pathohistological and immunohistochemical analysis of the tumor showed unclear histogenetic origin from the group of neuroendocrine tumors. Conclusion. Regardless of the asymptomatic period of the disease, these tumors can cause severe bleeding as the first symptom, which can be life-threatening.
A portable air quality monitor based on low-cost sensors
Authors: Tasic Visa , Bozilov Aca , Misic Nikola , Topalovic Dusan , Randjelovic Ivana , Mirkov Nikola , Kamenovic Vladan
Published: May 2023

National systems of automatic air quality monitoring are based on automatic measuring instruments that are installed in stationary air quality monitoring stations. Substantial financial resources are required for the procurement, installation, calibration, and maintenance of such measuring devices. For this reason, existing national and local air quality monitoring networks are not able to provide a high temporal and spatial resolution of measurement results. In the last decade, as a possible alternative to the conventional approach to air quality monitoring, real-time monitoring systems using low-cost sensors and sensor plat-forms have begun to be applied. This paper describes the basic characteristics of a portable air quality monitor PAQMAN 2020 based on low-cost sensors. Part of the results of comparative measurements of this device with the reference instruments is presented in the paper.
Assessment of detected in situ and modeled PM10/2.5 concentration levels during the urban transformation process in Novi Sad, Serbia
Authors: Sunjevic Miljan , Reba Darko , Rajs Vladimir , Vujic Bogdana , Ninkov Milovan , Vojinovic-Miloradov Mirjana
Published: May 2023

Ambient air pollution is a very considerable and complex physicochemical and environmental issue. Particulate matter (PM) is one of the fundamental pollutants constituted in ambient air. Rapidly expanding urban transformations in city of Novi Sad, Serbia, produces high concentrations of PM. The vast and growing number of construction sites as pollution emission hotspots induce constant nuisance for the people, build surrounding and environment in total. Serbian legislation has set PM pollution limit values for daily emissions, but the air pollutant registry still does not recognize construction sites as severe sources of PM emergence. Understanding the importance and the effects of PM emission from construction sites is crucial in environmental preservation. For the preparation and application of methods and techniques for prevention and mitigation, suitable environmental pollution modeling needs to be achieved. The aim of the research is to assess and determine the utility of Tier 1 prediction model designed by Environmental Protection Agency and environmental modeling software ADMS URBAN on observed construction sites in Novi Sad, Serbia. Assessing monitoring data confirms construction sites as significant PM10 and PM2.5 pollution sources. Two sets of correction coefficients were calculated for PM10 and PM2.5, using average and median values, 2.56-2.54 and 1.03-0.97 respectively. The research study was for the first time conducted in Novi Sad, Serbia in the case of construction sites.
Traffic intensity and air pollution before and during lockdown in Novi Sad, Serbia
Authors: Dmitrasinovic Sonja , Zivkovic Marija , Jovanovic Maja , Radonic Jelena , Davidovic Milos
Published: May 2023

The aim of the study was to analyse relationship between PM2.5 and PM10 concentrations, traffic density and meteorological factors during the week with regular traffic regime and first week of COVID-19 lockdown in Novi Sad, Serbia. During the study period, which included working days and weekends, traffic emission contributions to PM were also determined. Obtained results have shown higher PM, pressure and emission contribution values, lower temperature, relative humidity values, and lower traffic counts for all vehicle categories during the COVID-19 week. A positive correlation was detected only during the first week, between PM2.5 and passenger vehicles and lightweight trucks, as well as between PM10 and all categories of vehicles. Background PM2.5 and PM10 concentrations were moderately correlated to total traffic during the first week as well. Very strong and moderate positive correlation was detected between PM2.5 and PM10 concentrations and temperature during COVID-19 week. The PM concentrations increased during COVID-19 week, but total traffic decreased by 31% on work-days and 42% on weekends, proving the impact of lockdown measures on traffic regime and intensity. Since relationship between PM2.5 and PM10 with different vehicle categories was confirmed only during first week, and PM and emission contribution concentrations were higher during COVID-19 week, a secondary emission source of PM was strongly indicated. Very strong and strong positive correlations of PM2.5 and PM10 with temperature during COVID-19 week have confirmed lower temperature impact on PM concentrations and, consequently, increased impact of heating, as an emission source, due to lockdown measures and people staying at their homes.
Process parameters optimization of water-waste derived biodiesel emulsion to permute as a sustainable and greener energy source
Authors: Gurusamy Mahesh , Kandasamy Muralidharan , Vellaiyan Suresh
Published: May 2023

The present study aims to optimize the process parameters to formulate a stable water-biodiesel emulsion fuel and permute it as a sustainable and greener source for biofuel application. Biodiesel is derived from waste orange peels and its chemical constituents are characterized. Water emulsion in base fuel is considered to promote energy-and-environmental impacts. As the quality of emulsion fuel depends on the physicochemical properties which are directly influenced by base fuel, water, and surfactant concentrations, a multi-response optimizationol is implemented to derive the optimum levels for process parameters. The optimization result shows that the base diesel blended with 30% orange peel oil, 10% water, and 1% surfactant promotes superior fuel quality, and the water has a maximum influence on fuel quality (54.41%). The emission assessment at peak brake mean-effective indicates that the hydrocarbon, CO, NOx, and smoke emissions are reduced by 26.9%, 49%, 4.1%, and 17.2% at optimal conditions compared to base diesel, respectively.
A new high-irradiation ignition test and diagnosis method of solid combustibles
Authors: Liu Liu , Wen Yu-Shi , Wang Dan , Yang Hong , Dai Xiao-Gan , Feng Chang-Gen , Gan Qiang , Zhou Yang
Published: May 2023

This study proposes a new high-irradiation ignition test method for studying the py-rolysis and ignition of solid combustibles under extreme scenarios (> 0.1 MW/m2). The irradiation system that generates a 10 cm octagonal spot of dynamic irradia-tion with a peak flux of 1.25 MW/m2 and 95% uniformity, and a chamber with well-controlled ambient conditions and advanced diagnostics coupled with a multi-physical parameter measurement system. A verification test was conducted on cor-rugated cardboard using the proposed test method, resulting in high-quality out-comes with lower coefficients of variation compared to previous test methods. This improved approach provides a better procedure for testing and understanding the ignition threshold of combustible materials and laying the foundation for the de-velopment of advanced models of material pyrolysis and ignition processes under high irradiation.
Numerical simulation of heat transfer and flow characteristics for plate fin-and-tube heat exchanger with ring-bridge slit fins
Authors: Wang Zihao , Ouyang Xinping
Published: May 2023

In this paper, a new type of ring-bridge slit fins of plate fin-and-tube was proposed. It was studied by 3-D numerical simulation of heat transfer and flow using FLUENT. A sample of plate fin-and-tube exchanger with ring-bridge slit fins was tested. The reliability of the simulation was demonstrated by contrasting the simulated data with the experimental data. Six different structural parameters were investigated for their effects on the flow and heat transfer performance of the plate fin-and-tube exchanger with ring-bridge fins. It was found that the fin pitch had the most significant effect on the heat transfer and flow performance of the ring-bridge slit fins. Proper reduction of the front ring-bridge slit angle of the sample was beneficial to the overall heat transfer performance. The overall heat transfer performance was weakened by both decreasing or increasing the rear ring-bridge slit angle of the sample. The optimal fin structure was obtained by the orthogonal experimental method.
Effect of triangular ribs on the flow and heat transfer characteristics of heat exchanger tube
Authors: Zhu Shiquan , Li Longjiang , Peng Yisen , Cheng Chuanxiao , Hu Wenfeng , Hu Zongyao , Jin Tingxiang
Published: May 2023

To improve the heat exchange tube?s comprehensive performance and achieve enhanced heat transfer with lower flow resistance. The flow and heat transfer characteristics of a newly enhanced tube with triangular ribs were studied by numerical simulation. The results show that the multi-vortex longitudinal swirl developed in the triangular rib enhanced tube can enhance the cold and hot fluid mixing, and make the temperature distribution in the tube more uniform. The field synergy of velocity and temperature gradient was improved and the heat transfer capacity was enhanced. In the triangular rib enhanced tube, reducing the dimensionless pitch ratio of triangular ribs (P* = 0.5, 0.75, 1, and 1.25) and appropriately increasing the area of triangular ribs (A = 8, 12, 16, and 20 mm2) can improve the performance evaluation criteria (PEC). When Re = 8475, P* = 0.5, and A = 20 mm2, the maximum PEC = 1.324 is obtained.
Impact of energy transformation on China’s greenhouse effect under carbon peak and carbon neutral targets
Authors: Li Hua
Published: May 2023

The greenhouse effect is a global warming phenomenon caused by human activities. Therefore, it has become a global concern to reduce GHG emissions and control climate warming. This article aims to study how to analyze and study the impact of energy transformation (ET) on China?s greenhouse effect based on the stochastic impacts by regulation on population, affluence, and technology (STIRPAT) model, and to comb the current situation and trends of carbon emissions (CE) in China. The focus of this study is on the impact of China?s ET on the greenhouse effect, which is to study whether the ET can effectively reduce the intensity of the greenhouse effect and the rate of temperature rise in China with the existing energy structure and industrial structure unchanged. This article analyzed the scale and intensity of China?s CE from 1995 to 2020, and understood that during the period 2003-2012, China?s CE grew very rapidly. In 2020, China?s CE reached 10.273 billion tons. In addition, through the analysis of CE prediction under three different scenarios, this article found that under the baseline scenario, China?s future CE scale would continue to grow. Under the planning scenario, it was expected that the CE scale would reach 137541 million tons and 143817 million tons respectively in 2030 and 2060. Under the regulatory scenario, it would reach a peak in 2030 and then show a downward trend. In 2050, the scale of CE would begin to maintain a balance, and under the regulatory scenario, the greenhouse effect would also be significantly reduced.
An efficient boundary meshfree computational approach for 3-D multi-domain transient thermal analysis with variable thermal sources in non-homogeneous media
Authors: Ling Jing , Yang Dong-Sheng , Wang Hong-Ying , Mou Hong-Zhong
Published: May 2023

Solutions of 3-D multi-domain transient thermal analysis with variable thermal sources in non-homogeneous media are separated into homogeneous and special solutions by an efficient boundary meshfree computational approach, namely virtual boundary meshfree Galerkin method. Homogeneous solutions are expressed by the virtual boundary element method. The virtual source functions of homogeneous solutions and the unknowable coefficients of special solutions can be formed by the radial basis function interpolation. Considering the control equation, the boundary and continuous conditions, and using the Galerkin method, the discrete formula for 3-D multi-domain transient thermal analysis with variable thermal sources in non-homogeneous media can be obtained. This discrete equation has symmetry. Meanwhile, in order to illustrate the steps of implementation more clearly, the final detailed implementation process is given. The numerical results of two calculation examples are obtained and compared to other methods and exact solutions. The proposed method?s stability and exactness are validated for 3-D multi-domain transient thermal analysis with variable thermal sources in non-homogeneous media.
Simulation and experimental study of buried natural gas pipeline leak detection based on sound source characteristics
Authors: Lin Ting , Wang Zhichi , Hu Bin , Ji Yubo , Liang Xiaoyu
Published: May 2023

Buried pipe-line leakage will affect the thermal characteristics of the soil environment, leading to a poor soil environment. In addition, leakage of natural gas possibly produces an explosion and subsequent fire, which has fatal harm. Sustainable detection of underground gas pipe-line leaks is a significant part of current research. In this study, a method for leak detection of buried natural gas polyethylene pipe-lines based on sound source characteristics is investigated. The simulation software was applied in analyzing the variation of leakage rate and sound source in buried pipes under different leakage conditions including mainly different leakage apertures and pipe pressures. Also, an experiment platform was built to verify the simulation results. These results can provide help for gas pipe-line leakage detection and safety protection.