bluuebunny/crossref_metadata_2025 huggingface dataset:
Bank of new schemes of active RC-filters of the Sallen-Key subclass with independent tuning of the main parameters
Authors: Butyrlagin Nikolay , Denisenko Darya , Prokopenko Nikolay , Inanov Yuri
Published: April 2022

 A new subclass of Sallen-Key RC-filters with independent adjustment of the main parameters, which are implemented on voltage followers (buffer and operational amplifiers), has been studied. Low- and high-pass filters, band-pass and notch filters are offered, which have the ability to independently adjust the pole frequency, pole quality factor and transmission coefficient with different resistors. Their computer simulation was carried out in the Micro-Cap environment, the amplitude-frequency and phase-frequency characteristics were obtained in the tuning mode using the models of buffer and operational amplifiers built into the Micro-Cap.
Indagini sulla poesia del giovane Boccaccio: il segno di Dante nelle terzine della Caccia di Diana
Authors: Baldi Ester
Published: April 2022

The aim of this research is to demonstrate the convergences between the rhymes of Dante's Commedia and Boccaccio's Caccia di Diana.
The analysis developed on the rhymes has allowed us to understand that Boccaccio's work presents 44.6% of rhymes derived from the Comedia.
The author, however, does not only retrieve rhymes from Dante, but he also uses contexts, images and syntagmas present in the three canticles.
Caccia di Diana is the first work in tercets after the Commedia and the vulgarization of De Consolatione Philosophiae executed by Alberto Della Piagentina, so it is extremely interesting to note how the young Boccaccio approaches the Dantean model to begin composing in verse.
«Leontius dicit»: l’utilizzo delle glosse a Omero nella Genealogia di Boccaccio
Authors: Ceccarelli Chiara
Published: April 2022

Among the many sources used by Boccaccio in his scholarly work Genealogia deorum gentilium, there are also the Homeric poems, made available to the author thanks to Leonzio Pilato’s Latin translation. What is interesting is that besides the Latin text of Iliad and Odyssey, he makes use also of Leonzio’s glosses written in the margins of his autograph manuscripts. In the wake of Agostino Pertusi’s pioneering study, this paper traces a link between Leonzio’s glosses on the Odyssey (Venezia, Biblioteca Nazionale Marciana, gr. IX 29) and many passages of the Genealogia where Leonzio is quoted as a source. The analysis is structured in three parts, i.e. the quotation of Boccaccio’s passage, the text of the source and a detailed commentary on its use.
Analisi lessicale degli alterati con funzione diminutiva e della varietà dei loro ruoli all’interno del Decameron
Authors: Sciarri Gabriele
Published: April 2022

The present article deals with the use that Boccaccio makes of diminutives in his Decameron. After a brief introduction on the lexicographic studies dedicated to the works of the author, an investigation carried out thanks to the corpus TLIO (Tesoro della Lingua Italiana delle Origini) is presented. The study is aimed at reporting the occurrences of -etto, -ello, -ino, -uccio and its variant ­-uzzo diminutives in their context of use in the Centonovelle. The results outline a diverse situation where these diminutives are used in a wide range of expressive situations, spanning from affective to humorous and making their use one of Boccaccio’s key elements of writing style. The ‘passion’ for diminutives felt by the author is finally presented through a few examples of hapax legomena.
Cheminer dans les espaces pastoraux du Buccolicum carmen avec Boccace
Authors: Chauvin Claire
Published: April 2022

The present article aims to present Boccaccio’s Buccolicum carmen as a main work in his latin production, inspired by Vergil and his followers during the Middle Age. Through the allegorical path, focused on the shepherd’s environment, Boccaccio first defines a model of power embodied by the king-shepherd. Moreover, he tries to convert his readers, as well as himself, into a better way of life related to Vergil’s one and close to the eremitic model. By doing so, he accomplishes himself as a poeta-theologus, as exposed by Dante.
Le biografie dei classici nelle glosse di Boccaccio al IV Canto dell’Inferno tra il Liber de dictis philosophorum antiquorum e altre sillogi di vite dei filosofi antichi
Authors: De Cesare Chiara
Published: April 2022

The contribution intends to relate the biographies of the philosophers and auctores contained in the glosses to canto IV of Dante’s Inferno to some possible sources consulted by Boccaccio. The study takes into account three possible competing sources: Giovanni Gallico’s Compendiloquium, which Boccaccio read in the Riccardian codex 1230 - postillated by him in one place -, the Liber de vita et moribus philosophorum by pseudo-Walter Burley and the Liber de dictis philosophorum antiquorum according to Boccaccio’s Laurentian Zibaldone. This text, previously considered of minor importance than the other biographical syllogies, will be given a prominent role, especially in correspondence with eight biographies in which it seems to have provided Boccaccio with ideas for the elaboration of the work.
Effects of A GLP‑1 Receptor Agonist on Gastrointestinal Epithelial Cells
Authors: Takizawa Yusuke , Oguri Junya , Uno Masaya , Onsui Ami , Ishimura Atsushi , Kurita Takuro , Nakajima Takanori
Published: April 2022

The number of people with diabetes worldwide has increased to 537 million, with a 3.6-fold increase occurring in the last 20 years. Various medications are used in the treatment of diabetes, and glucagon-like peptide-1 (GLP-1) receptor agonists have been recommended in major overseas guidelines. Although the main route of administration of GLP-1 receptor agonists is subcutaneous, orally administered GLP-1 receptor agonists were approved in 2019. Therefore, gastrointestinal epithelial cells are exposed to GLP-1 receptor agonists with poor bioavailability; however, it currently remains unclear whether this luminal approach damages these cells. The present study investigated the effects of GLP-1 receptor agonists on gastrointestinal epithelial cells. The gastrointestinal epithelial cell lines HGC-27, IEC-6, and Caco-2 were treated with Liraglutide, a GLP-1 receptor agonist. The protein expression of the GLP-1 receptor was confirmed in these cell lines, and Liraglutide did not significantly affect their proliferation. Although no inhibitory effects on oxidative stress were noted, Liraglutide appeared to alter the expression of drug absorption-regulating factors. In conclusion, since no significant changes were detected in the cell lines examined, even at higher concentrations of Liraglutide, there were no significant effects at the cellular level. However, since the present results were contradictory to previous findings, further studies using different conditions and cells are warranted.
Subcutaneous and Intramuscular Cysticercosis: “Rice grain” or “Cigar Shaped” Appearance
Authors: Belabbes Soufiane , Biyie Prudence , Magne Caroline , Africha Taoufik , Zainoun Brahim
Published: April 2022

Cysticercosis is a parasitic infection caused by the larval form of Taenia solium, a pork tapeworm. The disease is endemic in virtually all developing countries in Central and South America, Asia, and Africa [1]. Also, it can be found in non-endemic regions in immigrant populations, or in people who have traveled to endemic regions [2]. The perpetuation of this parasitic disease is related to poor sanitation and hygiene. The symptoms of cysticercosis vary according to the affected system, the cyst burden, and the host’s immune response to the infection. We present a case of a 40-year-old male patient diagnosed HIV positive for 5 years ago, and treated using antiretroviral (ARV) drug, who presented with a chief complaint of fatigue and myalgia as part of a general assessment, a cerebral and thoracoabdominal CT scan was performed and revealed multiples ‘‘Rice-grain’’ soft-tissue calcifications. Those findings were compatible with muscular cysticercosis.
Recurrent Dysphagia: Think about Eosinophilic Esophagitis
Authors: Oussama Nacir , Yassine Chait , Adil Ait Errami , Zouhour Samlani , Khadija Krati , Sofia Oubaha
Published: April 2022

Introduction: Eosinophilic esophagitis is a chronic inflammatory pathology, poorly understood, characterized by isolated dense infiltration of the esophageal mucosa by eosinophils, associated with upper digestive symptoms, caused by allergens that can be food or aeroallergens. Case observation: This is a 35-year-old patient with a history of recurrent episodes of allergic rhinitis who had repeated and paroxysmal episodes of high dysphagia for two years, occurring after food intake and predominating on solids. The clinical examination was normal, the standard biological assessment revealed Hb: 14.1 g/dl GB: 12,000 ele/mm3 with hypereosinophilia at PNE: 540 ele/mm3 and PLQ: 250,000 ele/mm3 renal function as well that the blood ionogram were without abnormalities. Esophageal endoscopy found a foreign food body upstream of a narrowed aspect of the esophageal lumen of the middle third of the esophagus with erythematous and congestive esophageal mucosa. An extraction of food residues was carried out with additional balance sheet. A cervico-thoracic scan showed a ringed and isolated arrangement of the middle esophagus. Esophageal manometry did not identify motor disorders. Staged biopsies of the esophagus showed eosinophilic polymorphonuclear exocytosis at a rate of 30 intraepithelial eosinophilic polymorphonuclear cells per field at high magnification. The blood dosage of Total IgE returned slightly increased to 250 kU/L. the diagnosis of eosinophilic esophagitis was retained. Discussion: Eosinophilic esophagitis considered a rare disease, the symptoms vary with age, mainly dysphagia to solids (70%) and symptoms suggestive of gastroesophageal reflux (40%), it may be associated with manifestations atopic. The first examination requested must be a gastroscopy with biopsies, it is therefore essential and must be accompanied, in all cases, by biopsies of the esophagus. There are characteristic, but not pathognomonic, images of eosinophilic esophagitis, namely strictures, ....
Giant Ascending Aortic Aneurysm: A Case Report and Review of the Literature
Authors: Mohamed El-Alaoui , Moussa Son , Loc Phan Vu Nghia , Issaka Zalle , Mouhcine El Mardouli , Rachid El Haouati , Drissi Boumzebra
Published: April 2022

Giant aortic aneurysm is defined as aneurysm in the aorta greater than 10 cm in diameter. It is a rare finding since most patients will present with complications of dissection or rupture before the size of aneurysm reaches that magnitude. Etiological factors include atherosclerosis, Marfan’s syndrome, giant cell arteritis, tuberculosis, syphilis, HIV-associated vasculitis, hereditary hemorrhagic telangiectasia, and medial agenesis. Once diagnosed, prompt surgical intervention is the treatment of choice. Although asymptomatic unruptured giant aortic aneurysm has been reported in the literature, there has not been any case of asymptomatic giant dissecting aortic aneurysm reported in the literature thus far. We present a case of a 62 year old man with a 14 cm of diameter aneurysm of the ascending aorta and aortic arch without impact on the aortic root.
Clinical Significance of Modified Greab Score in Patients of Intra Ventricular Hemorrhage when Treating with External Ventricular Drainage
Authors: Rahman Dr. Md. Mahfuzur , Siddique Dr. Md. Shamiul Alam , Islam Dr. Md. Shafiqul , Sarker Prof. Asit --Chandra , Das Dr. Sukriti , Milad Dr. Fazle Elahy , Rana Dr. Md. Sumon
Published: April 2022

Background: There is no consensus in the literature on the effects of the development of hydrocephalus on survival and disability after intracerebral hemorrhage (ICH) and the benefits of external ventricular drainage (EVD). Some studies showed good outcomes whereas some showed poor outcomes after insertion of EVD in patients with spontaneous intraventricular hemorrhage with hydrocephalus. Objective: This study is planned to describe the role of external ventricular drainage in treating patients with spontaneous, either primary or secondary, intraventricular hemorrhage with hydrocephalus. Method: A hospital-based prospective interventional study was conducted in the Department of Neurosurgery of Dhaka Medical College Hospital, which is a tertiary level hospital, from April 2016 to September 2017. A total of 42 patients of spontaneous intraventricular hemorrhage, either primary or secondary, with hydrocephalus were selected for this study. Glasgow Coma Scale score for level of consciousness and Modified GRAEB score for severity of ventricular hemorrhage were recorded preoperatively. All the collected data were entered into IBM SPSS software, Version 22.0. Correlations were determined by linear regression analysis. Results: Among 42 patients, the age range was 26-75 years with a mean age of 65.2±10.87 years. Male were 26(61.9%) and females were 16(38.1%). The male-Female ratio was 1.625:1. A total of 9(21.42%) patients had a primary intraventricular hemorrhage and the rest of 33(78.58%) had an intraventricular hemorrhage. Preoperative GCS ranged from 4 to13 with a mean value of 7.14 ± SD 1.995. Modified GRA Escoresre was ranged from 5 to 19 with the mean 8.85± SD 0.7693. The difference in GCS at 24 hours was ranged from a minimum of 3 to a maximum of +10 with an increase of +1.67± SD 2.09. Collected CSF volumes at 24 hours were ranged from a minimum of 50 to a maximum of 480 ml with a mean of 338 of 0.33 ml ±SD 113.329. Total 5 patients died within 30 days. ...........
Retrospective Analysis of Congenital Neonatal Intestinal Obstruction in a Tertiary Care Hospital in Bangladesh
Authors: Alam Muhammad Rashedul , Atiquzzaman Tarafder Mohammad , zaman Md. Hasanuz , Haque Sumona
Published: April 2022

Introduction: Patients with congenital neonatal intestinal obstruction are the main bulk of neonatal surgical departments. The incidence is approximately 1 in 1500-2000 live birth. Commonly caused by anorectal malformation (ARM), intestinal atresia, hirschsprungs disease (HD), meconium ileus, malrotation of gut, volvulus neonatorum, necrotizing enterocolitis (NEC) and rarely bands adhesion. These patients presented with vomiting, gradual abdominal distension and delayed or no passes of meconium. Usually, an abdominal radiograph is all that is necessary to make the diagnosis, since the gas pattern is distinctive and often will be a clue to the site of obstruction. The aim of the study is to detect the type of congenital neonatal intestinal obstruction, initial surgical approaches, and their outcome in our hospital. Materials and methods: This is a retrospective study conducted at the division of pediatric surgery in Bangladesh Shishu hospital & institute, Dhaka, Bangladesh. The study period was 2 years from January 18 to December 19. All the neonates who underwent surgery for congenital neonatal intestinal obstruction were included. In this study only initial diagnosis, surgical procedure and outcome were included. Results: Our surgical department operated on a total of 246 neonates with congenital neonatal intestinal obstruction during this study period. Out of them, 139(56.50%) patients were male and 107 (43.50%) were female. The male-female ratio is 1.3:1. Gestational age was varied from 31 weeks to 40 weeks (Mean 36.2 weeks). Birth weight was from 1300 gm to 3800 gm (mean 2100gm). The most common cause of intestinal obstruction was ARM 72(29.27%), followed by hirschsprungs disease 53(21.54%), atresia 41(16.67%), meconium ileus 37(15.04%), malrotation of gut 28(11.38%) and other like bands adhesion, etc 15(6.09%). In case of atresia ileal atresia was common 16(39.02%) then jejunal 13(31.70%) and duodenal 9(21.95%). Only 3(7.31%) colonic atresia was found. ........
Ultrasound Appearance of Fibromatosis Colli: A Case Report
Authors: S Sanogo , A Kouma , I Guindo , O Diarra , M Dembélé , O Traoré , S Sidibé
Published: April 2022

It was a one month old female infant. He was sent to us on 03/22/2019 at the radiology department of Mopti’s hospital for a cervical ultrasound in the assessment of a cervical swelling observed by his mother a few days after his birth with a slight inclination of his head. Ultrasound exploration revealed a fusiform thickening of the left sternocleidomastoid muscle (SCM) with respect for its fibrillar appearance without other abnormalities. The diagnosis of fibromatosis colli of the left SCM muscle was retained. Fibromatosis colli is relatively rare in our environment. Complementary ultrasound at the clinic allows it diagnosis. The typical ultrasound image is the fusiform thickening of the sternocleidomastoid muscle with preservation of its fibrillar appearance. Ultrasound can also rule out other causes of cervical swelling in children.
Left Neck Mass: An Unusual Presentation of Testicular Cancer in a 50-Year-Old Man Case Report Seminoma - Havard'
Authors: Shimul Dr. S. M. Ashiqur Rahman , Bhuiyan Dr. Md. Zillur Rahman , Sikder Dr. Zenia , Sharmin Dr. Sadia , Biswas Dr. Shourov , Hossain Dr. Md. Arif
Published: April 2022

Advanced testicular germ cell tumors commonly involve cervical lymph nodes. In most circumstances, the diagnosis of germ cell tumor is established before the neck disease is noted. In rare cases, these tumors have been found along with cervical lymphadenopathy in patients with a previously undiagnosed primary tumor. In this article, we report the unusual case of a 50-year-old man whose metastatic seminoma initially manifested as an asymptomatic neck mass. This finding reinforces the need to include metastatic disease in the differential diagnosis of neck masses. Our discussion of this case focuses on the appropriate management of cervical metastases of germ cell tumors.
Rheumatic Heart Disease with Quadrivalvular Stenosis: A Case Report and Review of Literature
Authors: Belkho W. , Wakrim Z. , Jamili M. El , Karimi S. El , Hattaoui M. El
Published: April 2022

Multivalvular heart disease (MVD), particularly of rheumatic nature, continues to be a widespread condition in developing countries such as Morocco, despite implemented preventive measures. The intricate hemodynamic interactions between coexisting valve lesions may influence the clinical expression of each individual lesion. It makes diagnosis difficult and management often at the discretion of the physician given the lack of specific guidelines to assist in strategy. In the available literature, rheumatic quadrivalvular stenosis is exceptional. Here we describe a very rare case of rheumatic involvement of all four heart valves discovered in a 34-year-old woman with a history of untreated recurrent tonsillitis and joint pain in childhood, who presented with progressively worsening dyspnea and fatigue. Transthoracic echocardiography revealed severe left valves stenosis in addition to severe tricuspid and mild pulmonary stenosis, with evidence of congestive heart failure. Our case highlights the diagnostic difficulties encountered in the context of a developing country with limited access to primary care and treatment options.
Traumatic Pneumopericardium and Diffuse Subcutaneous Emphysema in a Child- A Case Report and Review of the Literature
Authors: Rachid L , Fouad A , Draiss Gh , Rada N , Bouskraoui M Bouskraoui
Published: April 2022

Pneumopericardium is defined as air inside the pericardial space. Pediatric pneumomediastinum and subcutaneous emphysema is an uncommon condition can occur due to various reasons : infection, trauma, foreign body aspiration, coexisting structural lung pathology or iatrogenic. It rarely happens after chest trauma. We are here to report a child 8 year old involved in a tackle during a recreational football game with clinically and radiologically affirmed pneumopericardium and diffuse sub cutaneous emphysema caused by chest trauma that was spontaneously relieved.
A Case of Ketoacidosis Decompensation Revealing a Fournier’s Gangrene at the Early Stage
Authors: IJDDA Sara. , Zaher FZ. , Rafi Sana , Elmghari Ghizlane. , Ansari Nawal El
Published: April 2022

A 81-year-old man with a 5-year history of diabetes mellituswas admitted for ketotic decompensation. On admission, the patient was found to be asthenic, drowsy, dehydrated and ketotic. The scrotum was grossly swollen with early patches of gangrene. On the biological assessment: C-reactive protein 264 mg/dl, serum potassium was low at 2.8 mmol/l. A scrotal ultrasound revealed a low abundance right hydrocele with edematous infiltration of scrotal envelopes. The patient was put on: intravenous insulin, fluids, potassium, and a broad empirical antibiotic therapy without any need for surgery with a good clinical and biological evolution.
Coronary Artery Connection Abnormalities: About Four Cases
Authors: Otmane Benlafkih , Chachi Abderazzaq , Naim Mohcine , Mohammed El Jamili , Saloua El Karimi , Dounia Benzarouel , Mustapha El Hattaoui
Published: April 2022

Coronary artery connection abnormalities are a diverse group of congenital disorders whose manifestations and pathological mechanisms are highly variable. This abnormalities are undergoing significant changes in terms of description, morphogenesis, clinical presentation, diagnostic assessment, prognosis and treatment. It is an important entity because of its clinical impact, the risk of sudden death, its prevalence and its practical management. The rapid development of imaging techniques such as computed tomography, magnetic resonance imaging, intravascular ultrasound and optical coherence tomography has brought a lot of new information on the issue. It is most often associated with sudden cardiac mortality if the abnormal connection of a coronary artery from the controlateral sinus, especially if it passes between the aorta and the pulmonary artery. Patients are often asymptomatic and coronary abnormalities are incidentally identified during coronary angiography or autopsy after sudden cardiac death in the majority of cases. Symptoms such as angina pectoris, syncope, heart failure and myocardial infarction can occur under certain circumstances. The purpose of this article is to provide a brief overview of the various variants of this disease, focusing on some clinical manifestations, the risk of sudden cardiac death and the physiopathological mechanism of symptoms, as well as valuable information on diagnostic assessment and treatment options.
Analysis of Factors Affecting Regional Financial Independence in the Framework of a Policy Strategy For Increasing Regional Original Income
Authors: Haptari Vissia Dewi , Ginting Ari Mulianta , Aritonang Ferdinand David
Published: April 2022

The regional autonomy policy, which is accompanied by the provision of balancing funds, has a goal, one of which is to have an impact on the financial independence of regency/municipal governments in Indonesia. The balancing funds provided should have an effect or have an impact on regional financial independence. This research is directed to see to what extent the relationship of fiscal decentralization can provide an increase in regional financial independence. Based on the results of the panel data regression analysis of the district/city data clusters, the results showed various results. In clusters I and IV, it shows that there is a positive and significant effect of the provision of balancing funds on regional financial independence. Meanwhile, based on the results of panel regression analysis in regencies/cities in cluster II, it shows that the provision of balancing funds has no significant effect on regional financial independence. The districts/cities in cluster III show that the balancing fund variable has a negative and significant influence on the financial independence of local governments. This implies that the provision of balancing funds for districts/cities in cluster III actually makes local governments dependent on transfer funds from the central government.
Flail Chest: A Literature Review
Authors: Yapanto Alvian Mohamad
Published: April 2022

This study aims to make a review about flail chest management so this can be a simple and useful reference for surgeons to make a decision for flail chest management decisions. The research method used in this research is descriptive qualitative method. The type of data used in this study is qualitative data, which is categorized into two types, namely primary data and secondary data. Sources of data obtained through library research techniques (library studies) which refers to sources available both online and offline such as: scientific journals, books and news sourced from trusted sources. From the results of research and discussion concluded that early surgical stabilization of rib fracture has better outcome in the cases of ribs fracture which are severe enough
Digitalization and automation in construction project’s life-cycle: a review
Authors: Begić Hana , Galić Mario , Dolaček-Alduk Zlata
Published: April 2022

The fourth construction industry revolution (i.e., Construction 4.0), driven by the fourth industrial revolution, introduces technological novelties to the construction industry in the direction of utilizing automation and digitalization potential. Various levels of maturity and adoption of these technologies have been identified separately in previous studies. In this study, a state-of-the art literature review is presented with the aim of determining the genesis and current levels of digitalization and automation, as well as their interoperability, among the main construction projects’ life-cycle phases. The results revealed that the construction project life-cycle phases are indeed at significantly different digitalization and automation levels. The initiation phase was found to be at a low level of digitalization and automation, the design and planning phase at a high level of digitalization with a low level of automation, and the execution phase at low-level digitalization with a higher level of automation. Since the topic is continuously developing, this research could be conducted in the near future to determine the advancements in comparison to the current conclusions.
An Area-Depth Symmetric $q,t$-Catalan Polynomial
Authors: Pappe Joseph , Paul Digjoy , Schilling Anne
Published: April 2022

We define two symmetric $q,t$-Catalan polynomials in terms of the area and depth statistic and in terms of the dinv and dinv of depth statistics. We prove symmetry using an involution on plane trees. The same involution proves symmetry of the Tutte polynomials. We also provide a combinatorial proof of a remark by Garsia et al. regarding parking functions and the number of connected graphs on a fixed number of vertices.
CERTAIN ISSUES OF THE QUALIFICATION OF THE CRIME PROVIDED FOR IN ARTICLE 222 OF THE CRIMINAL CODE OF THE RUSSIAN FEDERATION
Authors: Robak V. A.
Published: April 2022

The work is devoted to the analysis of acts that characterize the objective side of the crime provided for in Article 222 of the Criminal Code of the Russian Federation. The moments of the end of these acts are marked. The opinions of various authors on the issue to which this work is devoted are analyzed. The court practice on certain issues of the qualification of these acts is indicated. The author’s position regarding the qualification of these acts is indicated.
Robust Integral Linear Quadratic Control for Improving PV System Based on Four Leg Interleaved Boost Converter
Authors: Oussama Mohamed Cherif Daia Eddine , Ali Chebabhi , Abdelhalim Kessal
Published: April 2022

In this paper, a new robust integral linear quadratic controller (ILQC) is proposed for Four Leg interleaved boost converters (FLIBCs) uses in the photovoltaic systems. Compared to classical boost converters (CBC), IBCs are used in the high power and voltage application. Therefore, the IBC can convert a high-current low-voltage input to a low-current high-voltage output and presents higher efficiency, lower current ripple, and better reliability. In order to enhance the photovoltaic system robust performances as reliability and efficiency of the converter, the proposed robust ILQC is calculating with the consideration of equal current sharing. Results of the proposed technical are compared with those of a classical boost converter (CBC) and FLIBC based on PI control. Performances of FLIBC based on proposed ILQC are tested in several simulations using Sim Power Systems and S-Function of MATLAB/SIMULINK. It is observed that the ILQC based FLIBC is maximizes the conversion efficiency of photovoltaic systems, improving the response time, reduce the overshoot of the waveforms, and decrease the current ripple. Compared to classical PI control, the proposed robust ILQC can increase the efficiency of conversion under different irradiance levels.
The Impact of Local Government Reform and Territorial Organization of Power on Regional Development
Authors: Dvigun A.
Published: April 2022

The article considers the reform of the administrative-territorial system in Ukraine as a factor in strengthening territorial development, the state of transition to the second stage of reform. An assessment of the state of resource capacity of communities at this stage is given, and the problems that hinder the formation of wealthy communities and the negative consequences for the formation of the financial and economic potential of communities and regions are described. Conclusions are formulated.
XX a. keramikų Aldonos Ličkutės, Egidijaus Igno Talmanto ir Kristinos Karkaitės-Mazūrienės interviu
Authors: Dovydėnas Rokas
Published: April 2022

Vilniaus dailės akademijos meno aspirantūros studijų metu 2004 m. imti giluminiai interviu iš 1950–1970 m. aktyviai dirbusių arba tuo metu studijavusių keramikų Juozo Adomonio, Aldonos Ličkutės, Kristinos Mazūrienės, Egidijaus Igno Talmanto, Liucijos Šulgaitės, Elenos Venckevičienės. Meno aspirantūros tiriamajame darbe apie LSSR 1956–1970 m. keramiką remtasi literatūra iš 1950–1970 m. kultūrinės spaudos – žurnalų Dailė, Kultūros barai, Pergalė. Be to, pažinti tą laikotarpį padėjo ir dailininkų darbų katalogai bei dailės albumai. Visgi to meto publikacijos buvo gana oficiozinės, o parodų kataloguose pristatyta tik dalis sukurtų darbų. Interviu medžiaga atskleidžia tai, kas neatspindėta tuometėje spaudoje, kokiomis sąlygomis dirbo Lietuvos keramikai XX a. 6–7 dešimtmečiais. Šaltinių tekste pateikiami trys interviu, trumpos trijų autorių biografijos ir interviu kontekstas.
Tiled Interiors on Paper: Trade Catalogues as a Key Source to Understand the Use of Floor and Wall Tiles in European Interiors
Authors: Baeck Mario
Published: April 2022

The enormous popularity of decorated industrial wall and floor tiles in Europe in the years 1840–1940 is strongly linked to the standardization, technical quality, and aesthetic variety of the products that were well marketed through often lavishly colored trade catalogues.
More than the study of existing tile schemes in interiors, a systematic study of these trade catalogues leads to a better understanding of the general use of tile in the nineteenth- and twentieth-century interior. They inform us about factories and offer invaluable information on the technical and aesthetic evolution of tiles. They help us to date the designs and acquire a better knowledge of changes in taste in applying them. They are also a valuable source for documenting differences and similarities between factories and countries in matters of tile design and reveal opportunities to better understand the global export success or stylistic influence of many European factories in other countries on the continent as well as overseas.
In this paper a general and theoretical approach is elucidated by referring to concrete cases based on a research collection of more than 600 tile catalogues from all over the world.
Sosialisasi Penggunaan Google Classroom dalam Pembelajaran Jarak Jauh secara Asinkron untuk Tutor Bahasa Inggris
Authors: Lestari Asti Ramadhani Endah , Martiarini Elyza
Published: April 2022

Kegiatan pembelajaran tatap muka di lembaga kursus Bahasa Inggris di Depok masih tetap berlangsung. Namun, pemahaman tutor tentang bagaimana pembelajaran daring secara asinkron cenderung belum diimplementasikan. Hal itu merupakan latar belakang diadakannya kegiatan sosialisasi penggunaan google classroom ini. Metode yang digunakan pada kegiatan pengabdian kepada masyarakat ini adalah memberikan sosialisasi penggunaan google classroom kepada tutor lembaga kursus Bahasa Inggris di Depok. Media pembelajaran google classroom adalah salah satu produk yang dikembangkan oleh google agar dapat meningkatkan kolaborasi serta terciptanya komunikasi yang lebih baik antara siswa dan guru. Kegiatan sosialisasi ini memberikan pengetahuan kepada seluruh peserta bahwa penggunaan aplikasi google classroom dapat mempermudah guru dalam melaksanakan pembelajaran jarak jauh.
Pemanfaatan Teknologi Pengajaran Bahasa Inggris di Era Adaptasi Kebiasaan Baru
Authors: Suminar Anne Ratna , Fajriah Yustika Nur , Nurjamin Lucky Rahayu , Sofyawati Eva Devi
Published: April 2022

Kegiatan pengabdian ini bertujuan untuk memberikan sosialisasi kepada para guru bahasa inggris terkait pemanfaatan teknologi dalam pengajaran bahasa Inggris di era adaptasi kebiasaan baru (AKB). Hal ini dirasa penting untuk dilakukan mengingat masih banyaknya guru, khususnya guru bahasa Inggris, yang mengalami kesulitan dalam memilih, menggunakan, serta memanfaatkan jenis teknologi pengajaran yang dirasa efektif dalam pengajaran. Untuk itu, metode yang digunakan sebagai berikut. Pertama, metode ceramah dari pemateri berkenaan dengan jenis-jenis pemanfaatan teknologi yang dapat dilakukan dalam pengajaran bahasa Inggris. Kedua, tanya jawab yang dilakukan dengan para peserta workshop. Ketiga, simulasi yang dilakukan oleh para pemateri terkait langkah praktis dalam menggunakan berbagai platform/aplikasi pengajaran. Keempat, pretes dan postes kepada peserta terkait keterpahaman mereka akan teknologi pengajaran bahasa Inggris berbasis online. Hasil kegiatan ini menunjukkan bahwa terdapat peningkatan pemahaman para guru bahasa Inggris terkait pemanfaatan teknologi ajar. Hal ini terlihat dari hasil postes yang menunjukkan bahwa para guru menjadi lebih memahami secara teoritis dan praktis terkait berbagai platform pengajaran yang dapat dimanfaatkan secara efektif dan efisien untuk pengajaran bahasa Inggris.
EFFECTS OF DIFFERRENT BORON-BASED FLAME RETARDANTS ON THE COMBUSTIBILITY OF BAMBOO FILAMENTS
Authors: ZHANG CAIJUAN , GUO HUI , ZHOU XINJIE , YU LILI , LI HUI , YANG ZHI-BIN
Published: April 2022

In this study, eight types of boron-based flame retardants were performed to evaluate theeffects of different boron components on the combustibility of the bamboo filaments. Disodium octaborate tetrahydrate, boric acid/borax, and nano-ZnBO4were used as the active flame retardant components. Besides, other inorganic flame retardants including nano-SiO2and ammonium polyphosphate (APP) were also introduced in order to increase the flame retardant of these boron-based components. The combustibility of the bamboo filaments treated with different flame retardants were evaluated by cone calorimeter analysis. Theresults showed that the flame retardants including the heat release and smoke release resistance of the bamboo filaments with different boron-based components and nano-SiO2or APP, could be significantly improved, especially, in the samples treated with the compound flame retardant composed of boric acid, borax and nano-SiO2, which was attributed to the synergistic effect of these flame retardant components.
An Overview of Pre-Owned Car Market –A glimpse of Post-COVID Scenario
Authors:   M.Com. M.Phil., Ph.D., M.B.A., Ph.D., M.Sc (Psy) PGDCA Associate Professor & Head, Department for Commerce (Foreign Trade), PSG College of Arts & Science, Coimbatore., Saranya Dr. B , Arun Banu Chander C ,   M.Com,MPhil, Ph.D Research Scholar (Part-Time), PSG College of Arts &Science, Coimbatore
Published: April 2022

In the modern days people feel to have their own mode of transportation than depending on public or shared means of transport. This has necessitated people to think about owning a two-wheeler and gradually a shift from necessity to convenience to buy a four-wheeler. The cost of new car is very high which made people to buy a pre-owned car. This article addresses the present scenario and the challenges faced by the pre-owned car industry with reference to Covid-19.
Pengaruh Penggunaan Video Pembelajaran terhadap Minat Belajar Siswa pada Materi Mendongeng di Masa Pandemi Covid 19
Authors: Nurdin Nurdin
Published: April 2022

Penelitian bertujuan mengetahui pengaruh penggunaan video pembelajaran terhadap minat belajar siswa pada materi mendongeng pada masa pandemi covid 19. Penelitian ini adalah penelitian kuantitatif, pendekatan penelitian asosiatif ini minimal terdapat dua variabel yang dihubungkan. Penelitian dilakukan oleh penulis bentuk hubungan bersifat sebab akibat (kausal), yaitu hubungan yang bersifat mempengaruhi dua varibel atau lebih. Teknik  pengambilan sampel yaitu  sampling jenuh yaitu   berjumlah 15  anak di TK Libukang Permai Kota Palopo. Teknik pengumpulan data dalam penelitian ini dengan cara pengisian kuesioner. Hasil penelitiannya:  terdapat pengaruh penggunaan video pembelajaran terhadap minat belajar siswa pada materi mendongeng pada masa pandemi covid 19, dibuktikan dari   nilai t hitung  7.400 dan signifikansi 0,000 sehingga nilai signifikansi lebih kecil dari 0,05 sehingga terdapat pengaruh secara parsial yang signifikan dari variabel penggunaan media video pembelajaran terhadap minat belajar siswa. Adanya pengaruh positif artinya semakin tinggi nilai penggunaan media video pembelajaran  maka minat belajar siswa  semakin tinggi.
The Low-redshift Lyman Continuum Survey. I. New, Diverse Local Lyman Continuum Emitters
Authors: Flury Sophia R. , Jaskot Anne E. , Ferguson Harry C. , Worseck Gábor , Makan Kirill , Chisholm John , Saldana-Lopez Alberto , Schaerer Daniel , McCandliss Stephan , Wang Bingjie , Ford N. M. , Heckman Timothy , Ji Zhiyuan , Giavalisco Mauro , Amorin Ricardo , Atek Hakim , Blaizot Jeremy , Borthakur Sanchayeeta , Carr Cody , Castellano Marco , Cristiani Stefano , De Barros Stephane , Dickinson Mark , Finkelstein Steven L. , Fleming Brian , Fontanot Fabio , Garel Thibault , Grazian Andrea , Hayes Matthew , Henry Alaina , Mauerhofer Valentin , Micheva Genoveva , Oey M. S. , Ostlin Goran , Papovich Casey , Pentericci Laura , Ravindranath Swara , Rosdahl Joakim , Rutkowski Michael , Santini Paola , Scarlata Claudia , Teplitz Harry , Thuan Trinh , Trebitsch Maxime , Vanzella Eros , Verhamme Anne , Xu Xinfeng
Published: April 2022

The origins of Lyman continuum (LyC) photons responsible for the reionization of the universe are as of yet unknown and highly contested. Detecting LyC photons from the Epoch of Reionization is not possible due to absorption by the intergalactic medium, which has prompted the development of several indirect diagnostics to infer the rate at which galaxies contribute LyC photons to reionize the universe by studying lower-redshift analogs. We present the Low-redshift Lyman Continuum Survey (LzLCS) comprising measurements made with the Hubble Space Telescope Cosmic Origins Spectrograph for a z = 0.2–0.4 sample of 66 galaxies. After careful processing of the far-UV spectra, we obtain a total of 35 Lyman continuum emitters (LCEs) detected with 97.725% confidence, nearly tripling the number of known local LCEs. We estimate escape fractions from the detected LyC flux and upper limits on the undetected LyC flux, finding a range of LyC escape fractions up to 50%. Of the 35 LzLCS LCEs, 12 have LyC escape fractions greater than 5%, more than doubling the number of known local LCEs with cosmologically relevant LyC escape.
Limiting the Abundance of LIGO/Virgo Black Holes with Microlensing Observations of Quasars of Finite Size
Authors: Esteban-Gutiérrez A. , Mediavilla E. , Jiménez-Vicente J. , Agües-Paszkowsky N. , Muñoz J. A. , Heydenreich S.
Published: April 2022

We present a simple but general argument that strongly limits the abundance of primordial black holes (PBHs) (or other unknown population of compact objects) with masses similar to those determined by LIGO/Virgo from BH binary mergers. We show that quasar microlensing can be very sensitive to the mass of the lenses, and that it is able to distinguish between stars and BHs of high mass, when the finite size of the source is taken into account. A significant presence of massive BHs would produce frequent high-flux magnifications (except for unrealistically large sources), which have been very rarely observed. On the contrary, a typical stellar population would induce flux magnifications consistent with the observations. This result excludes PBHs (or any type of compact object) in the mass range determined by LIGO/Virgo as the main dark matter constituents in the lens galaxies.
Using the Hills Mechanism to Generate Repeating Partial Tidal Disruption Events and ASASSN-14ko
Authors: Cufari M. , Coughlin Eric R. , Nixon C. J.
Published: April 2022

Periodic nuclear transients have been detected with increasing frequency, with one such system—ASASSN-14ko—exhibiting highly regular outbursts on a timescale of 114 ± 1 days. It has been postulated that the outbursts from this source are generated by the repeated partial disruption of a star, but how the star was placed onto such a tightly bound orbit about the supermassive black hole remains unclear. Here we use analytic arguments and three-body integrations to demonstrate that the Hills mechanism, where a binary system is destroyed by the tides of the black hole, can lead to the capture of a star on a ∼114 days orbit and with a pericenter distance that is comparable to the tidal radius of one of the stars within the binary. Thus, Hills capture can produce stars on tightly bound orbits that undergo repeated partial disruption, leading to a viable mechanism for generating not only the outbursts detected from ASASSN-14ko but periodic nuclear transients in general. We also show that the rate of change of the period of the captured star due to gravitational-wave emission is likely too small to produce the observed value for ASASSN-14ko, indicating that in this system there must be additional effects that contribute to the decay of the orbit. In general, however, gravitational-wave emission can be important for limiting the lifetimes of these systems and could produce observable period decay rates in future events.
Seasonal changes in the pro/antioxidant status of mussels Mytilus galloprovincialis (Lamarck, 1819) from Bulgarian Black Sea coastal habitats
Authors: Tsvetanova Elina , Georgieva Almira , Chipev Nesho , Alexandrova Albena
Published: April 2022

The pro/antioxidant status of marine macrozoobentic organisms is being increasingly applied in environmental monitoring and conservation programs. The oxidative stress level in marine bivalves can provide valuable information not only on the health of the organisms and their populations, but also on the current state of habitats and ecosystems. The aim of the present study was to make the first comprehensive investigation of the seasonal changes in the antioxidant activity in different organs (gills, digestive gland and foot) of M. galloprovincialis from representative Bulgarian Black Sea coastal habitats. The lipid peroxidation and glutathione levels, as well as activities of the antioxidant enzymes catalase, superoxide dismutase, glutathion peroxidase, glutathion reductase, glucose-6-phosphate dehydrogenase and glutathione-S-transferase of the organs were measured spectrophotometrically. Our hypothesis was that enhanced environmental pressure during the summer season, induced by multiple factors (biogenic, abiogenic and anthropogenic) led to weakening of the antioxidant protection in mussels at the beginning of autumn. The reaction of the mussel organism to the multiple stress factors was specific for the target organ and the type of the biomarker. Significant differences were present in the activity of the antioxidant system in mussels from the northern and southern coastal locations. The seasonal changes in the pro/antioxidant status of mussels were primarily due to specific seasonal changes in factors concerning the marine environment at the concrete locality. Further research is obviously needed to confirm the present results and provide a more complete data of seasonal and spatial changes in the antioxidant defense system of mussels from the Bulgarian Black Sea coastal area and their implementation in biomonitoring programs.
Pollinators of Lavandula angustifolia Mill., an important factor for optimal production of lavender essential oil
Authors: Valchev Hristo , Kolev Zdravko , Stoykova Bilyana , Kozuharova Ekaterina
Published: April 2022

Lavender essential oil is widely used in pharmacy, perfumery and the food industry. It is one of the key essential oils in aromatherapy due to its valuable pharmacological properties. The producers of lavender essential oil are well aware that the greatest quantity of oil is obtained near the end of the inflorescence anthesis and that oil quantity is correlated with the pollination as unpollinated flowers drop down. In addition, it has been demonstrated that oil quality is also highest at the end of the flowering period, related to the gradual increase of monoterpenes (particularly the valuable linalool) and the decrease of sesquiterpenes during flower ontogenesis. The aim of this preliminary study was to measure the occurrence of spontaneous self-pollination in Lavandula angustifolia Mill. and to identify external pollinators. The field experiments were performed in a lavender plantation near Gorna Lipnitza Village, north Bulgaria and in the ex-situ lavender collection in the experimental plot of the Botanical Garden of Sofia University. It was revealed that spontaneous self-pollination did not occur in flowers from which external pollinators had been excluded. Exposed flowers were pollinated by polylectic insects, such as honeybees, several species of bumblebees and butterflies. Wild pollinators (particularly bumblebees) dominated over honeybees at both study sites. Our observations showed that all pollinators actively collected nectar. The pollen baskets of most bees were full, indicating the active consolidation of pollen adhering to the pollinators’ bodies. Although lavender growers tend to place beehives in the fields for optimal essential oil production, it is also crucial to conserve wild pollinators.
Correlation between bacterial abundance, soil properties and heavy metal contamination in the area of non-ferrous metal processing plant, Southern Bulgaria
Authors: Nikolova Radina , Petkova Michaella , Dinev Nikolai , Kenarova Anelia , Boteva Silvena , Berov Dimitar , Radeva Galina
Published: April 2022

In the present study, the correlation between bacterial abundance and soil physicochemical properties along the heavy metal contamination gradient in the area of non-ferrous metal processing plant was assessed. Our results showed that bacterial abundance (number of heterotrophic bacteria and number of 16S rRNA gene copies) decreased with 45–56% (CFU) and 54–87% (16S rRNA gene) along the Zn, Pb and Cd contamination gradient. The total bacterial abundance (16S rRNA gene) increased exponentially in contrast to the abundance of heterotrophic bacteria. The reduction of bacterial abundance in heavily contaminated soil indicated that the soil properties (soil pH, total organic carbon, inorganic ions, soil texture) could modify the effects of heavy metals and the response of microorganisms to that stress in long-term contaminated soils.