bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessment of the Fatal Outcome in case of Violation of the Occupational Safety Rules in the Construction Industry
Authors:   Moscow State University of Civil Engineering National Research University, Lapidus A.A. , Makarov A.N. ,   Moscow State University of Civil Engineering National Research University
Published: June 2023

The construction industry ranks first in terms of the number of fatal cases among other types of economic activity. One of the reasons is the dynamic nature of workplaces and the hazards affecting them in construction. To effectively prevent injuries and reduce fatalities, it is required to introduce a risk-oriented approach into the occupational safety management system, which allows to assess the state of the system at any time. It is proposed to assess the risk of a fatal case using the Bayesian approach. To do this, the identification of risk factors was carried out — 10 groups of violations of the occupational safety rules were identified, which are the most common causes of fatal outcome. According to the statistical data of the Federal Service for Labor and Employment, collected on the main participants in production activities in the Russian Federation for 2013–2021, the a priori probability of a fatal outcome was calculated for each risk factor. And based on the statistical data of the Ministry of Labor and Social Protection and the Federal State Statistics Service, collected for all construction subjects of the Russian Federation for 2011–2020, the a priori probability of fatal outcome in construction was calculated. Based on the values obtained, the posterior probabilities of the fatal outcome for each risk factor were calculated. The risk of fatal outcome is presented as the mathematical expectation of damage depending on the number of simultaneously acting risk factors. This allows to assess risk throughout the construction process as risk factors change and are simultaneously affected. The result of the work was a new approach to assessing the risk of fatal outcome in case of an incident in construction, which gives high reliability of the results and allows to correlate the risk with violations of the occupational safety rules. All this makes it possible to take the necessary management decisions in a timely manner to prevent the realization of this risk.
Assessment of Tailor Professional Risks
Authors:   Vyatka State University, Kuznetsova D.A. , Mikryukova O.N. ,   Vyatka State University
Published: June 2023

Every employee in the course of his work is faced with production factors that can lead to adverse consequences in the form of diseases and /or injuries. At the same time, the identification of hazards is still a difficult task even for the specialists. All this makes it difficult for the manager to ensure the safety of employees. Profession of the tailor was chosen as the object of the study. The labor operations were analyzed performed by the employee, as well as the condition of the equipment and tools involved in the work and the room, in which the workplace is located, along with the results of the special assessment of working conditions. The authors came to a conclusion that this procedure is not able to assess all the hazards that an employee is exposed to at his workplace during the performance of his work duties. That is why a risk assessment procedure was recently introduced in the workplace, which is mandatory for all employers. However, a single method for risk assessment was not proposed yet. In this regard, the literature sources were analyzed, and the most popular methods were selected: the Elmery method, Fine-Kinney method, the matrix method, and the checklist method. During the risk assessment procedure, conflicting results were obtained. If we assess the risk using the checklist method, then the tailor professional risk is assessed as low, according to the Elmery method - medium, and the Fine-Kinney and matrix methods showed a high level of risk. This suggests that the choice of method directly affects the final result and the magnitude of occupational risk. At the same time, the risk assessment procedure helps to identify hazards that were not considered during a special assessment of working conditions, which helps to promptly take measures to reduce hazards and improve the working conditions of the employee.
Investigation of Plasma Electric Oxide Coating Formed on the Prototype Samples of Aluminum Plates Made of 1050 Grade
Authors:   LLC ZVO Innovent, Medvedev D.L.
Published: June 2023

Today, the technology of hardening the surface layers of parts and the creation of protective coatings on the surface with high physical, mechanical and chemical properties are especially efficient in many industries. The article presents the studies of the most promising innovative technology for surface hardening of 1050 grade aluminum plates by plasma electrolytic oxidation method. This method allows to obtain the materials with an ultra-high melting point, high hardness, and wear resistance. Possible conditions and mechanisms for the formation of protective layers on the surface of aluminum plates to improve reliability and safety in the production of chemical industry products are considered. The influence was studied concerning the main technological parameters (alloying elements, electrical parameters, electrolyte composition) on the properties and structure of oxide ceramic coatings. The qualitative characteristics of the finished products from aluminum alloys and the surface layer of the samples showed the efficiency of the plasma electrolytic oxidation technology, which allows to obtain ceramic coatings with increased hardness, wear and corrosion resistance, and strength. When processing by plasma electrolytic oxidation in an aqueous electrolyte solution, all the industrial safety requirements are met. An alternative approach to processing by plasma electrolytic oxidation is considered, in which 1050 grade aluminum plates were used in a molten nitrate salt at a temperature of 280 °C. The microstructure, phase, chemical composition, and microhardness were studied by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and microhardness tests. The formed coating was found to be free from electrolyte contamination, cracks and pinholes commonly found in coatings formed during plasma electrolytic oxidation treatment in an aqueous electrolyte solution.
Risk-oriented and Process Approaches are the Basis of the Current Occupational Health and Safety Management System in the Organization
Authors:   Togliatti State University, Shchipanov A.V.
Published: June 2023

Information is provided on the legislative documents of the Russian Federation regulating the activities of organizations in the field of occupational safety. The relevance and expediency of the application of risk-oriented and process approaches at the stage of the development and implementation of the occupational safety management system on the basis of the legislative documents containing mandatory requirements, compliance with which is mandatory in the development of the occupational safety management system. The methodological substantiation of the process approach to the development of an occupational health and safety management system in an organization, based on a systematic approach using the well-known PDCA principle, is given, the basic issues of its applicability are considered. A matrix of processes and sub-processes was compiled in accordance with the typology of processes according to ISO (ISO/TC 176/SC 2/N 544R3), the organization management processes, the processes of measurement, analysis and improvement, the main processes and processes of resource management are given, the processes are ranked by levels. The model was developed for creating an occupational health and safety management system based on risk-oriented and process approaches, the technique of structural analysis and design SADT (Structured Analysis and Design Technique), and functional modeling methodology IDEF0. The development was carried out concerning the main context diagram of the process of creating an occupational health and safety management system in the IDEF0 notation. The decomposition of processes of the second and third levels is presented, and all their functional relationships are described. It is demonstrated that the risk-oriented and process approaches used in the design of the occupational health and safety management system make it possible to structure the composition of processes, clearly define the input and output parameters of processes, process participants, resources, and ensure control and adjustment of processes.
Implementasi Pengujian Alpha dan Beta Testing Pada Aplikasi Gamelan Virtual Reality
Authors: Menora Tasya , Primasari Clara Hetty , Wibisono Yohanes Priadi , Sidhi Thomas Adi Purnomo , Setyohadi Djoko Budiyanto , Cininta Mutiara
Published: June 2023

Abstrak. Pengujian merupakan bagian atau tahapan yang sangat penting dalam proses pengembangan perangkat lunak. Pengujian yang dilakukan secara tepat akan menghasilkan perangkat lunak berkualitas tinggi yang akhirnya dapat meningkatkan kepuasan pengguna dalam menggunakan perangkat lunak tersebut. Penelitian yang berjudul implementasi pengujian alpha dan beta testing pada aplikasi Gamelan Virtual Reality dilakukan dengan tujuan untuk menguji seluruh fungsionalitas aplikasi Gamelan Virtual Reality dan mengukur seberapa besar tingkat penerimaan pengguna terhadap aplikasi yang dikembangkan tersebut. Pengujian Fungsionalitas aplikasi dilakukan dengan menggunakan metode alpha testing, sedangkan pengukuran tingkat penerimaan pengguna dilakukan dengan metode beta testing. Pada pengujian alpha testing, penulis secara langsung menguji dan membandingkan output aplikasi Gamelan Virtual Reality. Jika output yang dihasilkan berbeda dengan output yang diharapkan, maka fungsionalitas itu gagal dikembangkan. Pengujian ini menghasilkan sebuah kesimpulan bahwa fungsionalitas aplikasi Gamelan Virtual Reality telah dikembangkan dengan baik. Pada pengujian beta testing, penulis menganalisis jawaban kuesioner yang diisi oleh responden setelah menggunakan dan menguji aplikasi Gamelan Virtual Reality. Hasil dari proses analisis tersebut adalah pengguna sangat menerima aplikasi Gamelan Virtual Reality yang dikembangkan.
 
Abstract. Testing is an essential part and stage of software development. Properly conducted testing will result in high-quality software that ultimately enhances user satisfaction in utilizing the software. The research entitled "Implementation of Alpha and Beta Testing in Virtual Reality Gamelan Application" aims to test the entire functionality of the virtual reality gamelan application and measure the level of user acceptance towards the developed application. The functionality testing of the application was carried out using the alpha testing method, while the measurement of user acceptance was done through the beta testing method. In the alpha testing, the authors directly tested and compared the output of the virtual reality gamelan application. If the produced output differed from the expected output, it indicated a failure in functionality development. This testing leads to the conclusion that the functionality of the virtual reality gamelan application had been well developed. In the beta testing, the authors analyzed the questionnaire responses filled out by the participants after using and testing the virtual reality gamelan application. The result of this analysis shows that users highly accepted the developed virtual reality gamelan application
KECERAHAN IKAN GUPPY (Poecilia reticulata) DENGAN PEMBERIAN TEPUNG BUNGA MARIGOLD (Tagetas erecta) PADA PAKAN KOMERSIL
Authors: Habmarani Nurrenze , Lumbessy Salnida Yuniarti , Marzuki Muhammad
Published: June 2023

Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian tepung bunga marigold pada pakan komersil terhadap kecerahan warna ikan guppy. Penelitian ini dilaksanakan selama 50 hari, dengan metode eksperimental menggunakan Rancangan Acak Lengkap (RAL) yang terdiri atas 4 perlakuan dan 3 kali ulangan, yaitu: P1 (kontrol), P2 (tepung bunga marigold 0,5%), P3 (tepung bunga marigold 1%), dan P4 (Tepung bunga marigold 1,5%). Penelitian diawali dengan pembuatan tepung bunga marigold, dicampurkan pada pakan pelet sesuai perlakuannya. Pakan selanjutnya diuji secara biologis pada ikan guppy yang dibudidayakan. Parameter yang diukur adalah berat mutlak, panjang mutlak, laju pertumbuhan spesifik, rasio konversi pakan, kelangsungan hidup, kandungan karotenoid, dan kecerahan warna. Data dianalisis menggunakan ANOVA dan dilanjutkan dengan uji Duncan. Hasil penelitian menunjukkan bahwa penambahan tepung bunga marigold pada pakan komersil dapat meningkatkan kecerahan warna pada ikan guppy dan mempengaruhi kelangsungan hidup (SR) (P<0,05), namun tidak berpengaruh terhadap pertumbuhan dan rasio konversi pakan (FCR) (P>0,05). Penambahan tepung bunga marigold pada pakan komersil sebesar 1,5% (P4) dapat meningkatkan karotenoid ikan guppy sebesar 13,80 µmol/g, didukung oleh nilai redness (a*) sebesar 31,37, yellowness (b*) sebesar 37,68, lighteness (L*) sebesar 28,25, hue sebesar 58,15, dan tingkat kelangsungan hidup 93%±0,06.
A Pogány-völgyi rétek Natura 2000 terület kisemlős közösségeinek vizsgálata, különös tekintettel az északi pocok (Microtus oeconomus) előfordulására
Authors: Lanszki József , Rozner György , Széles L. Gabriella
Published: June 2023

The presence of the root vole (Microtus oeconomus spp. mehelyi) as strictly protected, glacial relict species was proved by live-trapping method in the Pogány-völgyi rétek Natura 2000 area (HUDD20035). Root vole was capture on four from fourteen locations surveyed. In general small mammal communities were diverse; the numbers of captured species varied between 3 and 14 on each location. The root vole however showed rare occurrence, but were present in different microhabitats suggesting an adaptable and viable population on the Natura 2000 area studied.
A contribution to the study of Eulophidae (Hymenoptera: Chalcidoidea) from Iran
Authors: Ghahari Hassan
Published: June 2023

The fauna of the family Eulophidae (Hymenoptera: Chalcidoidea) from various regions of Iran is studied. In total 25 species of 18 genera and three subfamilies namely Entedoninae, Eulophinae, and Tetrastichinae were collected and identified. Chrysocharis pentheus (Walker, 1839), Chrysocharis pubicornis (Zetterstedt, 1838), Chrysocharis viridis (Nees, 1834) and Sympiesis flavopicta Bouček, 1958 are new records for the fauna of Iran.
Bilateral, single-session, laparoscopic adrenalectomy was associated with favorable outcomes in a cohort of dogs
Authors: Farrell Makayla , Singh Ameet , Mayhew Philipp D. , Lillo-Araya Felipe , Massari Federico , Richardson Danielle , Collier Allison J.
Published: June 2023

OBJECTIVE

To report perioperative characteristics and outcome following bilateral, single-session, laparoscopic adrenalectomy (BSSLA) in dogs.

ANIMALS

Client-owned dogs (n = 6).

CLINICAL PRESENTATION AND PROCEDURES

Medical records were reviewed and perioperative data collected, including preoperative diagnostic imaging, operative details, complications, and need for conversion to open laparotomy. Bilateral, single-session, laparoscopic adrenalectomy was performed on the right or left side with a standard 3- or 4-portal transperitoneal technique. The dog was repositioned to contralateral recumbency, and laparoscopic adrenalectomy was repeated. Follow-up information was collected by telephone interviews with the owners and/or referring veterinarian.

RESULTS

Median age and weight of dogs were 126 months and 14.75 kg, respectively. Contrast-enhanced CT (CECT) was performed in all dogs. Median maximal tumor diameter was 2.6 and 2.3 cm for the right and left-sided tumors, respectively. Median surgical and anesthesia times were 158 and 240 minutes, respectively. Conversion to open laparotomy was performed in 1 dog following renal vein laceration during initial adrenalectomy. Left adrenalectomy and ureteronephrectomy were performed, and the right adrenal tumor was left in situ. Cardiac arrest occurred in 1 dog following initial adrenalectomy (left); however, the dog was resuscitated successfully, and contralateral laparoscopic adrenalectomy was performed without complication. All dogs survived to hospital discharge. Follow-up ranged from 60 to 730 days (median, 264 days) for dogs that successfully underwent BSSLA.

CLINICAL RELEVANCE

BSSLA was associated with favorable outcomes in this cohort of dogs. Laparoscopy may be considered in dogs with bilateral, modestly sized, noninvasive adrenal tumors.
Opportunity Set, Liquidity, Stock Return, Inflation As A Moderator Investment Risk, Investment
Authors: Marjohan Masno , Anggun Anggraini  , Sayu Ketut Sutrisna Dewi  , Arsid
Published: June 2023

This study aims to analyze the influence of liquidity of investment risks, opportunities on stock return with inflation as a moderator. These study was a quantitative study which invloving panel data method. In thid study, data processing and population studies using Eviews software which consist of companies in the banking sector listed on the Indonesia Stock Exchange. This study found that investment risk has no impact on equity returns, the level of investment opportunity is locked into equity returns, liquidity has a significant negative impact on equity returns, and inflation affects the ratio of investment risk to equity returns was found to have the potential to increase Inflation weakens the relationship between investment opportunities and equity returns, while inflation can strengthen the relationship between liquidity and equity returns. It is hoped that further researchers will be able to include these variables as consideration in doing such investigation.
The Quantitative Determination of Oxacillin Using Kinetiс-Spectrophotometric and Redox Titration Methods
Authors: Karpova Svetlana P. , Ivashura Maryna M. , Koval Alla O. , Kolisnyk Iuliia S.
Published: June 2023

The search for new analytical reactions and finding out the optimal conditions for their course, which can be used as the basis for quantitative analytical determinations of penicillins, is a very urgent task.Aim. To develop methods for the quantitative determination of Oxacillin.Materials and methods. The study object was Oxacillin sodium salt powder in vials for preparing a solution for injections(0.5 g). Peroxomonosulfate acid as triple potassium salt 2КНSO5∙КНSO4∙K2SO4 (Oxone®) of “extra pure” grade was used as an oxidant. The methods of kinetic spectriphotometry and redox titration were used.Results and discussion. A simple procedure for the quantitative determination of the Oxacillin pure substance by the kinetic spectrophotometry and redox titration methods using potassium hydrogen peroxomonosulfate (KHSO5) has been developed. The results of the drug analysis obtained by newly developed and current methods are in good agreement with each other; δ (correctness) = (0.45 – 0.86) %.Conclusions. Using the methods of kinetic spectrophotometric and redox titration, two independent procedures for thequantitative determination of oxacillin in the substance and the drug product have been developed using potassium hydrogen peroxomonosulfate as an analytical reagent (KHSO5). A relative standard deviation RSD = (1.24 – 2.17) %.
The Synthesis and Acid-base Properties of α-(Fluoromethyl)- and α-(Difluoromethyl)-substituted Cyclobutane Building Blocks
Authors: Demchuk Oleksandr , Grygorenko Oleksandr
Published: June 2023

Aim. To synthesize cyclobutane-derived amines and carboxylic acids bearing CH2F or CHF2 groups in the α position; to determine the regularities of the effect of fluoroalkyl substituents on the acid-base properties of the title compounds.Results and discussion. Synthetic approaches to 1-(fluoromethyl)- and 1-(difluoromethyl)cyclobutanamines, 1-(fluoromethyl)- and 1-(difluoromethyl)cyclobutanecarboxylic acids have been developed. It has been found that the pKa (pKa(H)) values measured for the title compounds, as well as for their non-substituted and CF3-substituted analogues, are consistent with the electron-withdrawing effect of the corresponding fluoroalkyl substituents.Experimental part. The synthesis of the title compounds commenced from the known ethyl 1-(hydroxymethyl)cyclobutanecarboxylate or the product of its Swern oxidation (the corresponding aldehyde) and included fluorination, alkaline ester hydrolysis (for carboxylic acids), and modified Curtius rearrangement (for amines). The pKa value was determined from the pre-equivalence point part of the titration curve using the standard acid-base titration.Conclusions. A newly developed synthetic approach to 1-(fluoromethyl)- and 1-(difluoromethyl)cyclobutanamines, 1-(fluoromethyl)- and 1-(difluoromethyl)cyclobutanecarboxylic acids allows to obtain the title compounds in multigram quantities (up to 97 g). With a single exception, the acid-base properties of these products, as well as their parent non-substituted and CF3-substituted analogues, change in a monotonous manner in accordance with inductive electronic effect of the fluorine atom(s).
Relationship between Solar Flux and Sunspot Activity Using Several Regression Models
Authors: Siagian Ruben Cornelius , Alfaris Lulut , Ahmad Ghulab Nabi , Laeiq Nazish , Muhammad Aldi Cahya , Nyuswantoro Ukta Indra , Nasution Budiman
Published: June 2023

This study examines the correlation and prediction between sunspots and solar flux, two closely related factors associated with solar activity, covering the period from 2005 to 2022. The study utilizes a combination of linear regression analysis and the ARIMA prediction method to analyze the relationship between these factors and forecast their values. The analysis results reveal a significant positive correlation between sunspots and solar flux. Additionally, the ARIMA prediction method suggests that the SARIMA model can effectively forecast the values of both sunspots and solar flux for a 12-period timeframe. However, it is essential to note that this study solely focuses on correlation analysis and does not establish a causal relationship. Nonetheless, the findings contribute valuable insights into future variations in solar flux and sunspot numbers, thereby aiding scientists in comprehending and predicting solar activity's potential impact on Earth. The study recommends further research to explore additional factors that may influence the relationship between sunspots and solar flux, extend the research period to enhance the accuracy of solar activity predictions and investigate alternative prediction methods to improve the precision of forecasts.
İlk Prensipler Yöntemi ile Ni2TiAl Bileşiğinin Elastik ve Termodinamik Özelliklerinin İncelenmesi
Authors: ÖZER Tahsin , İHSAN Ali
Published: June 2023

Bu çalışmada Yoğunluk Fonksiyoneli Teorisi (DFT)’ne dayanan Quantum-Espresso yazılımı kullanılarak kübik L21 yapıda Ni2TiAl bileşiğinin yapısal, elastik ve termodinamik özellikleri incelenmiştir. Bileşiğin mekanik kararlı olduğu görüldükten sonra elastik modülü, anizotropisi, Vicker sertliği ve erime sıcaklıkları hesaplanmıştır. Hesaplamalar ve analizler sonucunda bileşiğin 1000K üzeri erime sıcaklığına sahip olmasından dolayı yüksek sıcaklık uygulamaları için aday malzeme olabileceği düşünülmektedir. 10 GPa altı Vicker sertliğine sahip olmasından dolayı yumuşak malzeme sınıfına girmektedir. Anizotropi analizlerinden malzemenin anizotrop olduğu görüldü.
Türkiye’deki illerin sosyo-ekonomik gelişmişlik endeksine göre LGS fen ve matematik testleri ile LGS diğer alt test başarılarının karşılaştırmalı analizi
Authors: YÜKSEL Mehmet , ERTÜRK Abbas
Published: June 2023

Bu çalışmada Türkiye’deki illerin sosyo-ekonomik gelişmişlik düzeyinin öğrencilerin LGS Fen Bilimleri ve Matematik testlerindeki akademik başarıları ile LGS kapsamındaki diğer alt testlerdeki akademik başarıları üzerindeki etkisi incelenmeye çalışılmıştır. Çalışmada, doküman analizi yöntemiyle edinilen ikincil veriler ile nicel araştırma yöntemi kullanılmıştır. Veriler 2019 yılında Milli Eğitim Bakanlığı tarafından hazırlanmış olan LGS Merkezi Sınavla Yerleşen Öğrencilerin Performansı raporu ve Sanayi ve Teknoloji Bakanlığının yayımlamış olduğu İllerin ve Bölgelerin Sosyo-Ekonomik Gelişmişlik Sıralaması Araştırması SEGE-2017 raporundan alınmıştır. Çalışmada illerin sosyo-ekonomik gelişmişlik düzeyinin öğrencilerin LGS fen bilimleri ve matematik test başarıları ile öğrencilerin LGS diğer alt test başarıları üzerindeki etkisi regresyon analiziyle incelenmiştir. Ayrıca çalışmada öğrencilerin LGS fen bilimleri ve matematik test başarıları ile LGS diğer alt testlerdeki başarılarının illerin sosyo-ekonomik gelişmişlik düzeylerini ayırt ediciliği diskriminant analizi ile belirlenmeye çalışılmıştır. Çalışmanın bulgularına göre illerin sosyo-ekonomik gelişmişlik düzeyinin öğrencilerin LGS sınavındaki fen bilimleri ve matematik akademik başarısı ile diğer testlerdeki akademik başarısını olumlu yönden etkilediği regresyon analizi ile saptanmıştır. Öğrencilerin fen bilimleri ve matematik alanı dışındaki diğer LGS test başarıları illerin sosyo-ekonomik gelişmişlik düzeyini ayırt edici olmakla birlikte fen bilimleri ve matematik test başarıları açısından bakıldığında diskriminant analizi bulgularına göre matematik test başarısının tek başına sosyo-ekonomik gelişmişliği yüksek olan illeri ayırt edici bulunmuştur. Bu bulgu öğrencilerin matematik başarısının illerin gelişmişlik düzeyini ayırt etmede önemli bir gösterge olduğunu göstermektedir. LGS’nin sözel alandaki test başarıları açısından bakıldığında ise illerin sosyo-ekonomik gelişmişlik düzeyinin ayırt ediciliğinde, yabancı dil test başarısının ayırt ediciliği daha yüksek bulunmuştur. Gelecekte yapılacak çalışmalarda yeni sosyo-ekonomik gelişmişlik düzeyine ilişkin çalışmaların sonuçlarını da dikkate alarak Türkiye’de illerin sosyo-ekonomik gelişmişlik düzey değişiminin ortaöğretimdeki matematik ve fen bilimleri temel alanındaki derslerin akademik başarısını etkileme eğilimi belirlenebilir.
Bakır(II) iyonunun 5,7-dihidroksiflavon ve sübstitue 2,2’-bipiridin ile yeni bir karışık ligand kompleksi
Authors: MUTLU GENÇKAL Hasene
Published: June 2023

Bu çalışmada 5,7-dihidroksiflavon (chrysin, chr) ve 4,4′-di-ter-bütil-2,2′-bipiridin (4,4’-dtbbpy) ligandları kullanılarak Cu(II) iyonunun yeni bir karışık ligand-bakır(II) koordinasyon bileşiği elde edildi. Sentezlenen bu koordinasyon bileşiğinin yapısı, elementel analiz, iletkenlik, manyetik süsseptibilite, kütle spektrometrisi ve Infrared (IR) spektroskopisi yöntemleriyle aydınlatıldı. Ayrıca TGA/DSC analizi ile yapısı desteklendi ve termal özellikleri araştırıldı. Elde edilen analiz verilerinden sentezlenen bileşikte, Cu(II) iyonu:chr-H:4,4’-dtbbpy oranının 1:1:1 olduğu ve koordinasyon küresi içerisinde ClO4- iyonunun bulunduğu nötral bir kompleks elde edildiği saptandı. Sonuç olarak sentezlenen koordinasyon bileşiği için [Cu(chr-H)(ClO4)(4,4’-dtbbpy)] formülü önerildi.
O conceito de letra nas gramáticas de Fernão de Oliveira (1536), João de Barros (1540) e Anchieta (1595): Uma leitura historiográfica
Authors:   Universidade Federal Fluminense (Brasil), Kaltner Leonardo Ferreira , Santos Melyssa Cardozo Silva dos ,   Universidade Federal Fluminense (Brasil)
Published: June 2023

Thetheme of the article is the concept of letter in the humanistic grammar of the 16th century, which derives from an adaptation of the concept of 'litera' in Latin grammar. To develop this debate, we work with texts by Fernão de Oliveira, João de Barros and Anchieta, analyzing them according to the theoretical description of Sylvain Auroux, Konrad Koerner and Pierre Swiggers, on the subject of grammatization technology in the Western world.
Miguel Ourvantzoff (San Petersburgo, 1897-Madrid, 1980), un artista viajero. Su obra gráfica conservada en Madrid
Authors:   Universidad de Zaragoza (España), Vázquez Astorga Mónica
Published: June 2023

This contribution focuses on the artist Miguel Ourvantzoff (Saint Petersburg, 1897–Madrid, 1980) and, specifically, on the study and assessment of his graphic production, preserved in the Biblioteca Nacional de España, Madrid. As the son of a member of the government of Tsar Nicholas II, he had to go into exile following the Bolshevik revolution. During this exile, and prompted by his spirit of adventure, he travelled to several European –Paris and Berlin– and South American cities –Buenos Aires and Cuzco, among others–. He settled in Madrid in 1951, where he continued to cultivate the art of drawing and illustration. Most of his works from his time in Madrid are kept in the Biblioteca Nacional de España. The series Apuntes madrileños (1964-1968), which was published by Gráficas Amara in twenty albums, is of particular interest. Ourvantzoff illustrated other albums on a variety of subjects: landscapes, monuments and castles in Spain and courtly literatura and other literary works.
Analysis of the dynamics of Neisseria gonorrhоeaе resistance to antimicrobial drugs in the Russian Federation for the period 2005–2021
Authors: Shagabieva Julia Z. , Nosov Nikita Y. , Shpilevaya Marina V. , Deryabin Dmitry G. , Obraztsova Olga A. , Nikonorova Evgenia R. , Solomka Victoria S. , Kubanov Alexey A.
Published: June 2023

Background. Neisseria gonorrhoeae can rapidly develop resistance to antimicrobial agents due to innate mechanisms for the acquisition of antimicrobial resistance genes. Because of the rapid formation of resistance mechanisms of N. gonorrhoeae to the antimicrobial agents used in gonococcal therapy, the risk of incurable forms of the disease is high. The purpose of the study is to to summarize the results of RU-GASP over a 16-year period and assess the trends of N. gonorrhoeae resistance to antimicrobials used in the regimens of antibiotic therapy of gonococcal infection in Russia.
Materials and methods. Study Objective. The study included 5356 isolates of N. gonorrhoeae received from January 2005 to December 2021 in State Scientific Center of Dermatovenerology and Cosmetology, Moscow of the Ministry of Health of Russia under the RU-GASP program from specialized medical organizations of dermatovenerological profile of 37 subjects of the Russian Federation. Primary identification of N. gonorrhoeae was performed using bacterioscopic and bacteriological methods. The cultures identified as N. gonorrhoeae were frozen in a cryogenic medium and transported to SSCDC. Received cultures were verified by biochemical criteria on a VITEK 2 Compact analyzer. For cultures identified as N. gonorrhoeae with less than 99% probability, a time-of-flight ionization mass spectrometer MALDI Microflex (Bruker Daltonics GmbH, Germany) was used for mass spectrometric analysis.
Antimicrobial susceptibility testing. Sensitivity testing of N. gonorrhoeae to six antimicrobials penicillin, spectinomycin, ceftriaxone, tetracycline, azithromycin and ciprofloxacin was performed by serial dilution in agar with determination of minimum suppressive concentrations (MSC, mg/L). N. gonorrhoeae sensitivity to antibacterial agents was evaluated according to EUCAST criteria (The European Committee on Antimicrobial Susceptibility Testing, 2022, http://www.eucast.org).
Results. The study showed the absence of significant changes in the ratio of sensitive and resistant to the action of antimicrobial drugs strains of N. gonorrhoeae that is a consequence of the effectiveness of the RU-GASP program, which allowed to exclude in time from therapeutic use the drugs for which a high proportion of the identified resistant strains was observed.
Conclusion. Analysis of RU-GASP results over a 16-year period confirms the use of third-generation cephalosporins (Ceftriaxone, Cefixime) as the drugs of choice for therapy of gonococcal infection, and the aminocyclic antibiotic spectinomycin as an alternative drug. The continued evolution of the molecular mechanisms of antibiotic resistance of N. gonorrhoeae dictates the need to continue the RU-GASP program.
Effusion cytology of metastatic carcinosarcoma
Authors: Kundu Reetu , Shastri Malvika , Gupta Parikshaa , Gupta Nalini , Srinivasan Radhika , Dey Pranab
Published: June 2023

Objectives:

Carcinosarcomas (CSs) are rare gynecological neoplasms seen in elderly females. These are composed of malignant epithelial and mesenchymal components, which appear as adenocarcinoma and high-grade sarcoma. Effusions are encountered uncommonly in CS.

Material and Methods:

The study focuses on the cytomorphology of 10 cases of metastatic CS in effusions. In 6 years, there were 10 (0.45%) cases of metastatic CS in effusion samples out of 2240 malignant effusion samples. The samples were processed by SurePath™ and centrifuge technique. Both May–Grünwald–Giemsa and Papanicolaou stained smears were evaluated for cytomorphological features, and the findings were correlated with subsequent histopathology.

Results:

The cells were predominantly arranged in ball-like clusters and discretely. The cells had abundant vacuolated cytoplasm and enlarged pleomorphic nuclei. Occasional cases showed scattered spindle cells. The cases were diagnosed as metastatic adenocarcinoma (7/10) and positive for malignant cells (3/10). None of the cases was diagnosed as CS. The primary of these cases was in the uterus (7/10) and ovary (3/10).

Conclusion:

The cytological evaluation of such effusion samples rarely demonstrates the classical biphasic pattern of these tumors. Mostly, the carcinomatous component is evident, and the sarcomatous element is inapparent and readily missed.
A Chiral Microcavity based on Apparent Circular Dichroism
Authors: Chen Tzu-Ling , Salij Andrew , Parrish Katherine , Rasch Julia , Brown Paige , Dhavamani Abitha , Urraci Francesco , Pescitelli Gennaro , Aronica Laura Antonella , Zinna Francesco , Arnold Michael S. , Wasielewski Michael R. , Di Bari Lorenzo , Tempelaar Roel , Goldsmith Randall
Published: June 2023

Breaking the symmetry between left-handed and right-handed chiral optical modes in planar Fabry–Pérot (FP) microcavities would enable a variety of chiral light-matter phenomena, with applications in spintronics, polaritonics, and chiral lasing. Such symmetry breaking, however, has remained underexplored and has been purported to require Faraday mirrors. We present a simple solution to chiral symmetry breaking in FP microcavities, preserving low mode volumes by embedding organic thin films exhibiting "apparent circular dichroism" (ACD); an optical phenomenon based on interfering linear birefringence and linear dichroism with offset optical axes. ACD interactions are opposite for counter-propagating light and increase with path length. Consequently, we demonstrated chiral asymmetry of the cavity modes over an order of magnitude larger than that of the isolated thin film. Through both circular dichroism spectroscopy and simulation using theoretical scattering matrix methods, we characterize the spatial, spectral, and angular chiroptical responses of this new type of chiral microcavity.
Structure and molecular interactions in 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl) imide ionic liquid/carbonate co-solvents -– combined DFT and molecular dynamics study.
Authors: Wagaye Abraham Molla , Yohannes Teketel , Workneh Getachew Adam
Published: June 2023

Both density functional theory (DFT) and molecular dynamics (MD) based on classical force field were used to provide both structural and electronic insight into the multifold interactions occurring in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid in the presence of ethylene carbonate and dimethyl carbonate co-solvent mixtures which are currently being targeted for applications in next-generation Li-ion battery electrolytes. In order to give a visual understanding of the molecular interactions, the structures of cations, anions, and cation - anion ion pairs were systematically studied using DFT calculations. The nature of hydrogen bond interactions in a series of ion pair conformers have been thoroughly discussed by analyzing the interaction energies, stabilization energies and natural orbital analysis of the ion pair conformers. Multiple but weak C ̶ H---O/N hydrogen bonds and anion donor π*C–N interactions have been observed. Charge transfer occurs mainly from the lone pairs of oxygen and nitrogen atom to the σ-type anti-bonding orbital of the C–H bonds and π-type anti-bonding orbitals of N ̶ C bonds. According to the MD study, the addition of carbonate co-solvents into the pure ionic liquid creates a more structured system than the pure ionic liquid. The coordination of the O/N atoms of the bis(trifluoromethylsulfonyl)imide anion to the most acidic H atom of 1-ethyl-3-methylimidazolium cation showed a marked decrease with increase in carbonate concentration indicating that the C ̶ H---O/N hydrogen bond interaction is reduced by the presence of high carbonate content. Furthermore, in the pure ionic liquid, adjacent cations are almost exclusively located on top and below the ring cation, whereas the anions mainly coordinate to the cation within the ring plane. The addition of large amount of carbonate co-solvents disturb the original near ordering which is found in the pure ionic liquid. Key words: electrolyte, Li-ion, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, ethylene carbonate, dimethyl carbonate.
Reverse Regioselective Cp*Co(III)-Catalyzed [4+2] C−H Annulation of N-Chloroamides with Vinyl Silanes: Synthesis of 4-Silylated Isoquinolones and its Application for the Synthesis of 3,4-Dihydroisoquinolones
Authors: Ghosh Arijit , Rana Tamanna , Bhaduri Nilanjan , B. Pawar Amit
Published: June 2023

We have developed Cp*Co(III)-catalyzed reverse regioselective [4+2] annulation of N-chlorobenzamides/acrylamides with vinyl silanes for the synthesis of 4-silylated isoquinolones. The reaction was performed at ambient temperature under redox-neutral conditions. The reaction utilizes the N-Cl bond as an internal oxidant and furnished the required products with excellent regioselectivities and demonstrated high functional group tolerance. Moreover, 4-silylated isoquinolone derivatives were readily converted into 3,4-dihydroisoquinolones via protodesilylation thus making vinyl silane an ethylene surrogate.
In situ Visualization of Cluster-mediated Oxidation Dynamics and Kinetics on Cu(111)
Authors: Chen Hao , T. Curnan Matthew , Liu qingfei , Ling Yunjian , Lv Jiayu , Li Yangsheng , Huang Wugen , Zhao Changbao , Wang Rui , Gong Zhongmiao , Cui Yi , Woo Han Jeong , C. Yang Judith , A. Saidi Wissam , Salmeron Miquel , Yang Fan
Published: June 2023

Using Scanning Tunneling Microscopy (STM) and Ambient Pressure X-ray Photoelectron Spectroscopy (APXPS), we investigated the structural evolution of Cu(111) interacting with oxygen in situ. O2 preferentially dissociates at Cu surface steps and oxidizes Cu, yielding “5-7”-Cu2O overlayers on surface steps, embedding oxides in adjacent terraces, and placing oxides on top of terraces. In response to continuous O2 exposure at 373 K, newly formed “5-7”-Cu2O films undergo successive transformations to “44”-Cu2O and “29”-Cu2O phases. Cuprous Cu-O overlayers are stable, even under high pressures (~1.6 mbar), at 473 K. First-principles Density Functional Theory (DFT) simulations substantiate experimental observations, resolving the energetics and structures of adsorption states and oxidation mechanisms at atomic scales. Specifically, the atomic dynamics responsible for overlayer growth from steps, selective oxidation of particular surface steps, and oxidation regime switching with overlayer coverage were all elucidated. Our combined STM, APXPS, and DFT studies extensively evaluate how Cu oxide overlayers dynamically form over various structural and reaction conditions.
Polarizable Embedding Potentials through Molecular Fractionation with Conjugate Caps including Hydrogen Bonds
Authors: Carrasco-Busturia David , Olsen Jógvan Magnus Haugaard
Published: June 2023

Polarizable embedding (PE) refers to classical embedding approaches, such as those used in quantum mechanics/molecular mechanics (QM/MM), that allow mutual polarization between the quantum and classical regions. The quality of the embedding potential is critical to provide accurate results, e.g., for spectroscopic properties and dynamical processes. High-quality embedding-potential parameters can be obtained by dividing the classical region into smaller fragments and deriving the parameters from ab-initio calculations on the fragments. For solvents and other systems composed of small molecules, the fragments can be individual molecules, while a more complicated fragmentation procedure is needed for larger molecules, such as proteins and nucleic acids. One such fragmentation strategy is the molecular fractionation with conjugate caps (MFCC) approach. As is widely known, hydrogen bonds play a key role in many biomolecular systems, e.g., in proteins, where they are responsible for the secondary structure. In this work, we assess the effects of including hydrogen-bond fragmentation in the MFCC procedure (MFCC(HB)) for deriving the embedding-potential parameters. The MFCC(HB) extension is evaluated on several molecular systems, ranging from small model systems to proteins, directly in terms of molecular electrostatic potentials and embedding potentials and indirectly in terms of selected properties of chromophores embedded in water and complex protein environments.
“For Excellent Diligence and Special Works”: On the Characteristics of the Awarding System and Siberian Teaching Encouragement (Based on the Materials of Western Siberia of the Late 19th – Early 20th Century)
Authors:   Irkutsk State University, Kruzhalina A.A. , Natoko E. V. ,   Irkutsk State University
Published: June 2023

The article dedicated to the development of the awarding system and Siberian teaching encouragement is offered to the readers. On the basis of a wide range of sources, the authors characterize the regulatory and legal regulation of the awarding system of the Russian Empire, accessible to Western Siberian teaching, and also demonstrate an analysis of award practices in the region, paying particular attention to the diversity of those awarded according to a number of criteria: education, disciplines read, position, etc. In conclusion, the authors define the key characteristics of the process under study in dynamics.
METHODOLOGY FOR DESIGNING THE TRAINING COURSE "EXCURSION GUIDE" IN THE SYSTEM OF VOCATIONAL EDUCATION
Authors:   Russian International Academy of Tourism, Imennova Lyubov' S. , Lonshakova Nadezhda A. ,   Russian International Academy of Tourism, Zorin Igor' V. ,   Russian International Academy of Tourism
Published: June 2023

The article is devoted to the problem of professional training of guides in the system of secondary vocational education. The current state of the educational program for the training of guides is analyzed and the need for the development of a training course "Guided tours" according to the program of secondary vocational education is justified. The article considers the methodology of selecting the content and designing the course "Guided tours" based on modern concepts of the theory of teaching and upbringing in vocational education. The features of the organization of expert evaluation of the effectiveness of the introduction of the training course "Guided tours" are investigated. The organization of the educational environment of teaching the course "Guided tours" on the basis of the Museum of Military Glory of the RMAT is considered. The experience of students' educational and scientific creativity is considered through the design of excursion activities and the creation of a unique creative educational environment that meets the requirements of the practical orientation of the educational process through integration into the educational environment of the Museum of Military Glory.
Da proibição na TV para a conquista na internet: a publicidade infantil no Youtube
Authors: Tomita Iris Yae
Published: June 2023

Com a restrição da veiculação de publicidade infantil na televisão, o mercado de produtos infantis precisou se reinventar, encontrando na internet um espaço oportuno para a sobrevivência de seus negócios. A internet passou a ser um terreno fértil para as empresas dialogarem com seu público, considerando o sucesso de canais voltados ao público infantil. A partir do interesse nessa transição, este texto faz um estudo bibliográfico sobre aspectos referentes à infância e à publicidade infantil e estuda o contexto da restrição da publicidade infantil na televisão para analisar metodologicamente as estratégias publicitárias do canal Luccas Neto – Toon, a fim de verificar de que forma a publicidade infantil é presente nos vídeos do canal do YouTube.
Analisis Kemampuan Berpikir Kritis Siswa Pada Materi Dinamika Rotasi dan Keseimbangan Benda Tegar di SMAN 7 Kota Bengkulu
Authors: Nainggolan Sonya Senita , Putri Johan Desy Hanisa , Purwanto Andik
Published: June 2023

This study aims to determine the critical thinking skills of SMAN 7 Bengkulu City students in solving test questions. This type of research is descriptive using six indicators of critical thinking skills, namely focus, reason, inference, situation, clarity, overview. The subjects involved in this study were 32 students of class XI IPA 4 as many as 32 people. The results of data analysis are: 49.13% of the focus aspect is categorized as low critical thinking ability, R (Reason) is 49.48% categorized as low critical thinking ability, I (Inference) 50.26% is categorized as low critical thinking ability , S (Situation) is 46.79% categorized as low critical thinking ability, C (Clarity) 47.74% is categorized as low critical thinking ability and O (Overview) 44.79% is categorized as low critical thinking ability. So, the results of this study indicate that the critical thinking ability of students at SMAN 7 Bengkulu City is still low. The implications will cause a domino effect for subsequent subjects. Because students only memorize without mastering the subject matter, the next material will be very difficult. Because as the material continues, the level of complexity will be higher.Keywords: analysis, critical thinking skill.
RASPBERRY WATER CONSUMPTION DURING DRIP IRRIGATION IN THE CONDITIONS OF THE CENTRAL NON-CHERNOZEM REGION
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, Dubenok N. N.
Published: June 2023

To obtain high-quality planting material, high and stable raspberry yields in unstable weather conditions, it is necessary to develop resource-saving technologies that are currently not available for the Central Non-Сhernozem region of the European part of Russia. The purpose of the study is to identify the features of raspberry water consumption under various drip irrigation regimes in the conditions of the Central Non-Chernozem region of Russia. Field studies were carried out on the basis of the laboratory of fruit growing «Michurinskiy Sad» of the Russian State Agrarian University – Moscow Agricultural Academy named after C.A. Timiryazev. A two-factor fi eld experiment was laid down in the fall of 2019. Drip irrigation of raspberries can signifi cantly save irrigation water in comparison with other irrigation methods (furrows, sprinkling, etc.). The conducted studies showed that in the variant of the experiment with maintaining soil moisture in the range of 80-100% of the lowest moisture capacity, the saving of irrigation water compared to furrow irrigation was on average 65%, and in the variant of 60-80% of the lowest moisture capacity – 78%. In addition, the use of local irrigation contributes to the creation of an optimal water-air regime of the soil. The highest total water consumption is characterized by the variant of the experiment with maintaining moisture in the root layer of the soil in the range of 80-100% of the lowest moisture capacity (on average 4342 m3/ha), and the smallest – 60-80% of the lowest moisture capacity (on average 4026 m3/ha). The study of the contribution of the main elements of the water balance to water consumption showed that for the irrigated variants of the experiment, precipitation has a signifi cant share (from 71 to 81%), and the contribution of the irrigation rate to the total water consumption is from 15 to 22%.