bluuebunny/crossref_metadata_2025 huggingface dataset:
Влияние изо- и гетеровалентных замещений катионов на суперионный фарадеевский переход во флюоритовой модификации β-PbF-=SUB=-2-=/SUB=-
Authors: Сорокин Н.И.
Published: April 2022

The influence of isovalent substitutions of Pb2+ by Cd2+ and heterovalent substitutions of Pb2+ by Sc3+ on a superionic Faraday transition in Pb1 – xCdxF2 (x = 0.33) and Pb1 – x ScxF2+x (x = 0.1) solid solutions based on the fluorite-type modification β-PbF2 with sp. gr. Fm¯3m has been studied. The Faraday phase transition can be characterized by the temperature Tλ corresponding to
maximum on the heat capacity curve and temperature Tα corresponding to the beginning of the structural disorder anion sublattice. Both of these temperatures are found on the temperature conductivity dependence σdc(T ) of β-PbF2, Pb0.67Cd0.33F2 and Pb0.9Sc0.1F2.1 crystals. The values of Tλ and Tα in solid solutions compared with β-PbF2 matrix (Tλ = 715 ± 10K, Tα = 597 ± 12 K) decrease by 100–110 and 30–45 K for Pb0.67Cd0.33F2 and Pb0.9Sc0.1F2.1, respectively. Decreasing of temperature Tλ leads to an increase in temperature interval of existence of the superionic state. For T > Tλ the anionic conductivity of fluorite-type Pb0.67Cd0.33F2, Pb0.9Sc0.1F2.1, and β-PbF2 crystals reaches anomalously high values of σdc = 1–2 S/cm
(873 K) at an ion transfer activation enthalpy equals to Hσ = 0.3 eV.
Совместное XPS- и AFM-исследование пленок оксида кремния с примесью цинка для ReRAM устройств
Authors: Привезенцев В.В. , Сергеев А.П. , Фирсов А.А. , Киселев Д.А.
Published: April 2022

The composition, structure and properties, as well as the current-voltage characteristics of a layered structure consisting of two 50 nm thick amorphous SiO2 films deposited by electron beam evaporation, between which a Zn film with a thickness that varied from 10 to 50 nm was deposited. Then these structures were annealed in air in the temperature range from 300 up to 450°C with a step of 50°C for 30 minutes. Planar electrodes with different configuration were used. They were made from gold, platinum and aluminum. It was found that after deposition on the sample surface, a granular structure with a grain size of 50-100 nm of SiO2 composition was formed. After annealing at 400°C, the sample roughness decreases from 25nm after deposition to 10 nm, and the grain size in plan increases to 100-200 nm. For films annealed at 400°C the current-voltage characteristics with hysteresis were obtained.
Рентгеновская фотоэлектронная спектроскопия нанопленок иттербия с адсорбированным на их поверхности кислородом
Authors: Кузьмин М.В. , Митцев М.А.
Published: April 2022

X-ray photoelectron spectra of nanoscale-thickness ytterbium films along with adsorbed oxygen layers have been studied for the first time. It is found that the spectra include features from both divalent and trivalent ytterbium. The intensity ratio of these features raises upon increasing the film thickness (the size effect). It is shown that the above behavior is due to the formation of two final states related to divalent and trivalent ytterbium at the photoionization of Yb 4f level by photons with the energy of 1253.6 eV, while only the trivalent state is realized by using the photons with the energy of 142 eV.
Магнитотранспортные, теплофизические и магнитокалорические свойства манганита La-=SUB=-0.8-=/SUB=-Ag-=SUB=-0.1-=/SUB=-MnO-=SUB=-3-=/SUB=- в магнитных полях до 8 T
Authors: Гамзатов А.Г. , Кадырбардеев А.Т. , Алиев Г.М. , Абдуразаков Р.Р. , Маркелова М.Н. , Батдалов А.Б. , Алиев А.М.
Published: April 2022

Измерены электросопротивление, теплоемкость, температуропроводность, теплопроводность и магнитокалорический эффект поликристаллического образца La0.8Ag0.1MnO3 в интервале температур 77-350 K и в магнитных полях до 8 T. Показано, что электросопротивление в парамагнитной фазе можно объяснить в рамках концепции поляронов малого радиуса с энергией активации EP=119 meV, а поведение электросопротивления в низкотемпературной ферромагнитной фазе предполагает существование нескольких механизмов рассеяния. Наблюдаемая большая величина магниторезистивного эффекта при низких температурах объясняется межгранульным туннелированием электронов проводимости. Обнаружено аномальное скачкообразное изменение решеточной теплоёмкости при фазовом переходе ферромагнетик--парамагнетик. Наблюдаемый ниже температуры Кюри TC рост теплопроводности и температуропроводности связывается с рассеянием фононов на локальных искажениях Яна--Теллера, которые ослабевают при переходе в ферромагнитную фазу. Магнитокалорический эффект в магнитном поле 8 T достигает значения Delta Tad=4 K, а величина эффективности магнитного охлаждения в том же поле равна 261.6 J/kg. Ключевые слова: манганиты, электросопротивление, теплоемкость, температурапроводность, теплопроводность, магнитокалорический эффект.
The Impact of the COVID-19 Pandemic on Hepatobiliary and Pancreatic Surgical Services in Singapore: Retrospective Quantitative Study
Authors: Teo Zhe Hao Timothy , Huey Cheong Wei Terence , Low Jee Keem , Junnarkar Sameer Padmakumar , Shelat Vishalkumar G
Published: April 2022

Background

At the height of the COVID-19 pandemic, the hepatopancreatobiliary (HPB) unit had to reorganize its surgical case volume due to the rationing of health care resources. We report on a local audit evaluating the impact of COVID-19 on the HPB unit and the HPB surgical oncology practice.

Objective

The aim of this study was to review the impact of the COVID-19 pandemic on the HPB unit’s elective and emergency surgical cases. The secondary aims were to investigate the impact on the HPB surgical oncology operative case volume.

Methods

We performed a comparative audit of the HPB unit surgical case volume for January-June 2019 (baseline) and 2020 (COVID-19). Elective and emergency cases performed under general anesthesia were audited. Elective cases included hernia and gallbladder operations and liver and pancreatic resections. Emergency cases included cholecystectomies and laparotomies performed for general surgical indications. We excluded endoscopies and procedures done under local anesthesia. The retrospective data collected during the 2 time periods were compared. This study was registered in the Chinese Clinical Trial Registry (ChiCTR2000040265).

Results

The elective surgical case volume decreased by 41.8% (351 cases in 2019 compared to 204 cases in 2020) during the COVID-19 pandemic. The number of hernia operations decreased by 63.9% (155 in 2019 compared to 56 in 2020; P<.001) and cholecystectomies decreased by 40.1% (157 in 2019 compared to 94 in 2020; P=.83). The liver and pancreatic resection volume increased by 16.7% (30 cases in 2019 compared to 35 cases in 2020; P=.004) and 111.1% (9 cases in 2019 compared to 19 cases in 2020; P=.001), respectively. The emergency surgical workload decreased by 40.9% (193 cases in 2019 compared to 114 cases in 2020). The most significant reduction in the emergency workload was observed in March (41 to 23 cases, a 43.9% reduction; P=.94), April (35 to 8 cases, a 77.1% reduction; P=.01), and May (32 to 14 cases, a 56.3% reduction; P=.39); however, only April had a statistically significant reduction in workload (P=.01).

Conclusions

The reallocation of resources due to the COVID-19 pandemic did not adversely impact elective HPB oncology work. With prudent measures in place, essential surgical services can be maintained during a pandemic.

Trial Registration

Chinese Clinical Trial Registry (ChiCTR2000040265); https://tinyurl.com/ms9kpr6x
COVID-19 Vaccination and Public Health Countermeasures on Variants of Concern in Canada: Evidence From a Spatial Hierarchical Cluster Analysis
Authors: Adeyinka Daniel A , Neudorf Cory , Camillo Cheryl A , Marks Wendie N , Muhajarine Nazeem
Published: April 2022

Background

There is mounting evidence that the third wave of COVID-19 incidence is declining, yet variants of concern (VOCs) continue to present public health challenges in Canada. The emergence of VOCs has sparked debate on how to effectively control their impacts on the Canadian population.

Objective

Provincial and territorial governments have implemented a wide range of policy measures to protect residents against community transmission of COVID-19, but research examining the specific impact of policy countermeasures on the VOCs in Canada is needed. Our study objective was to identify provinces with disproportionate prevalence of VOCs relative to COVID-19 mitigation efforts in provinces and territories in Canada.

Methods

We analyzed publicly available provincial- and territorial-level data on the prevalence of VOCs in relation to mitigating factors, summarized in 3 measures: (1) strength of public health countermeasures (stringency index), (2) the extent to which people moved about outside their homes (mobility index), and (3) the proportion of the provincial or territorial population that was fully vaccinated (vaccine uptake). Using spatial agglomerative hierarchical cluster analysis (unsupervised machine learning), provinces and territories were grouped into clusters by stringency index, mobility index, and full vaccine uptake. The Kruskal-Wallis test was used to compare the prevalence of VOCs (Alpha, or B.1.1.7; Beta, or B.1.351; Gamma, or P.1; and Delta, or B.1.617.2 variants) across the clusters.

Results

We identified 3 clusters of vaccine uptake and countermeasures. Cluster 1 consisted of the 3 Canadian territories and was characterized by a higher degree of vaccine deployment and fewer countermeasures. Cluster 2 (located in Central Canada and the Atlantic region) was typified by lower levels of vaccine deployment and moderate countermeasures. The third cluster, which consisted of provinces in the Pacific region, Central Canada, and the Prairies, exhibited moderate vaccine deployment but stronger countermeasures. The overall and variant-specific prevalences were significantly different across the clusters.

Conclusions

This “up to the point” analysis found that implementation of COVID-19 public health measures, including the mass vaccination of populations, is key to controlling VOC prevalence rates in Canada. As of June 15, 2021, the third wave of COVID-19 in Canada is declining, and those provinces and territories that had implemented more comprehensive public health measures showed lower VOC prevalence. Public health authorities and governments need to continue to communicate the importance of sociobehavioural preventive measures, even as populations in Canada continue to receive their primary and booster doses of vaccines.
Secularización y politización zapatista de las mujeres tseltales
Authors: Salazar Cruz Luz María , Leyva Méndez Gabriela
Published: April 2022

En este artículo analizamos cambios hacia la secularización y politización de las mujeres tseltales de Ocosingo a partir de la Ley Revolucionaria de Mujeres, elaborada por las mujeres zapatistas en 1993. Observamos una transformación radical en la vida  de las mujeres, y en la sociedad tseltal, identificamos un antes y un después del zapatismo en las relaciones entre mujeres y hombres tseltales. Asimismo, un empoderamiento en mujeres zapatistas a partir del proceso de  secularización y politización del EZLN. Este artículo se basa en la investigación etnográfica que realizamos en el municipio de Ocosingo de 1993 a la fecha (2021).
Iturbide: Funestos recuerdos del libertador de México
Authors: IRACHETA MARÍA DEL PILAR
Published: April 2022

Durante los dos años sucesivos de su emancipación de España, entre 1821 y 1823, la figura de Agustín de Iturbide, estuvo a la altura del heroismo y ascendió prácticamente a la categoría de divinidad. La población puso su entusiasmo y esperanza en el autor de la Independencia, lograda de manera pacífica y negociada, a través de los Tratados de Córdoba y el Plan de Iguala. Pero,

luego de su fallido gobierno como Emperador de México, Iturbide abdicó al trono y partió a su exilio en Europa. Allá se enteró de un supuesto plan de reconquista de las colonias españolas, a cargo de los países que formaban la Santa Alianza, emprendiendo su regreso a México para prestar sus servicios en caso de que dicho plan sucediera. Sin embargo, desconocía que el Congreso había promulgado el decreto del 28 de abril de 1824, impulsado por el Poder Legislativo y avalado por el Ejecutivo, declarándolo traidor y fuera de la Ley a Iturbide, siempre que se presentara bajo cualquier título en algún punto del territorio mexicano; también fue declarado enemigo público del Estado. El 14 de julio de 1824 el bergantín inglés

Spring

regresó a Iturbide a su Patria; desembarcó en Soto la Marina. El comandante de la guarnición federal, general Felipe de la Garza, a quien Iturbide le salvó una vez la vida, descubrió su llegada y le comunicó que, de acuerdo con el decreto de 28 de abril de 1824 del Congreso General, debía ser pasado por las armas inmediatamente.
role of the constitutional courts and ECtHR in shaping negotiated justice mechanisms
Authors: Czerwińska Dorota
Published: April 2022

The article analyses the role of constitutional courts of Germany, France and Italy in shaping negotiated justice mechanisms in these countries with regard to their procedural and – to some extent – substantive fairness as well as the role of the ECtHR in establishing common standards of fairness of such settlements. In each of the analysed countries, as well as in the case law of the EctHR, it was frequently questioned whether institutions similar to plea bargaining are conform to continental constitutional concepts as well as the standard of the fair trial derived from the ECHR. The role of constitutional courts and the ECtHR in shaping fairness of criminal justice settlements
has been non-negligible, although differed in compared legal systems: in France and in case of ECtHR it has rather been a controlling one, whereas in Germany and Italy significant tensions between constitutional courts and the legislature as well as lower courts have arisen and had to be resolved.
Movimiento de mujeres contra el extractivismo: feminismos y saberes multisituados en convergencia
Authors: Cabrapan Duarte Melisa
Published: April 2022

Este artículo indaga en la configuración de un movimiento de mujeres contra el extractivismo en América Latina. Para esto, revisa y analiza teóricamente las convergencias de: i) la movilización social por demandas de carácter ambiental y en contra del extractivismo de la naturaleza, con foco en la incorporación del género y la ecología política feminista; ii) la reivindicación y revalorización de experiencias territorializadas, tanto para la defensa de los territorios y los cuerpos como para la producción de saberes situados por parte del feminismo comunitario en conexión con otros feminismos; y iii) un diverso movimiento de mujeres que incorpora la lucha contra el extractivismo desde las ciudades, interpelando su origen rural y a sus principales actoras —mujeres indígenas, afrodescendientes y campesinas—, pero que la resignifica desde las problemáticas socioambientales propias del contexto urbano. Así, este trabajo se propone reflexionar en clave de género sobre las resistencias ante la avanzada extractivista neoliberal en Latinoamérica.
O florescimento de novas Margaridas: agroecologia, educação e saúde
Authors: De Souza Machado Letiane , Linhares Garcia Edna , Petry Analídia Rodolpho
Published: April 2022

El objetivo fue analizar, en las narrativas de las jóvenes agricultoras agroecológicas, la influencia de la educación rural y la agroecología en las transformaciones generacionales de las relaciones de género. Se entrevistó a cinco mujeres jovenes de Vale do Rio Pardo, Rio Grande do Sul, Brasil. Las declaraciones apuntan al reconocimiento de la mujer como pionera de la producción orgánica que siempre ha sido una práctica de cuidado y autonomía transmitida transgeneracionalmente. La educación rural, especialmente en lo relacionado con la agroecología, abrió un espacio de cuestionamiento y contribuyó al proceso de emancipación y transformación de los modos de vida. Esta nueva generación de mujeres cuestiona las relaciones de género establecidas culturalmente, reconociéndose como poderosas agentes de cambio en busca de la equidad.
¿Dos pesos y dos medidas? Maternidad y vida académica de estudiantes de doctorado en una universidad pública
Authors: Bitencourt Silvana Maria , Batista Andrade Cristiane
Published: April 2022

El artículo analiza la relación entre la vida académica y la maternidad entre estudiantes de doctorado en diferentes áreas de una universidad pública. Se realizaron diez entrevistas a profundidad. Los resultados muestran que la comprensión de la maternidad entre las madres académicas implica, entre otras cosas: la elaboración de un nuevo uso del tiempo; culpa y responsabilidad por el cuidado de los niños; reproches a sí mismas por no corresponder al ideal académico impuesto por el contexto académico actual; falta de participación de los padres en el cuidado de los hijos; y sobrecarga para las mujeres. Es necesario pensar en políticas públicas que compensen a quienes decidieron trabajar en la esfera productiva.
Mapeo participativo y cartografía social de conocimientos culturales, históricos y arqueológicos. Recurso práctico para profesores y estudiantes universitarios
Authors: Álvarez Larrain Alina , McCall Michael K. , León Villalobos José María
Published: April 2022

La obra compila lineamientos y herramientas para la aplicación de un enfoque de mapeo participativo y cartografía social de conocimientos culturales, históricos y arqueológicos. Está pensada como un recurso didáctico para profesores o estudiantes universitarios interesados en enseñar o aplicar este método en sus investigaciones o proyectos. Cuenta asimismo con sugerencias para una buena  práctica en el trabajo con comunidades y diversos sectores sociales. Esperamos que está publicación sea un recurso valioso tanto para los estudiantes del postgrado del CIGA, como para los estudiantes de la ENES Morelia, dada la afinidad temática con los cursos allí impartidos y los temas de tesis derivados de estas instituciones.
Can the Market of Cryptocurrency Be Followed with the Technical Analysis?
Authors: Jain Rachit , Bhardwaj Puru , Soni Priyanshu
Published: April 2022

Abstract: This paper focuses on the role of technical analysis in cryptocurrency and whether cryptocurrency can be followed with technical analysis or not. During this study, we have used the most established technical tools and indicators like the Candlestick pattern, volumes, trends, the Moving Average, Moving Average Convergence Divergence, the Relative Strength Index, Bollinger Bands, Fibonacci Retracement, etc. By analyzing Bitcoin charts, the results indicate that the indicators can be used to generate a significantly positive return. It is found that cryptocurrency can be followed with technical analysis like equity market and forex market. We have used charts that explain how Bitcoin can be traded through technical analysis which is the most hyped-up topic for today’s generation. Keywords: Technical Analysis, Cryptocurrency, bearish, bullish, traders, candlestick pattens, technical indicators, securities, Moving Average Convergence Divergence (MACD), Relative Strength Index (RSI), Bollinger Bands and, trends.
Research Paper on Blood Bank Donation and Management using Danjgo
Authors: BS Shravani , R Raghavendra.
Published: April 2022

Abstract: Blood Warrior is a pwa application that enables patients or hospitals to find the nearest available blood donor based on the blood group. The application will have the donor’s details so that hospitals or patients can directly contact them required for blood donation. The application will be developed using Python, HTML, CSS, Flask, Sql and machine learning. The application will have three types of users which are patients or users who are in need of the blood, donors who'll be donating the blood and the hospitals which can work as an intermediate to manage the communication between the patients and the donors Index Terms: Blood Bank Donation and Management, Django, Chatbot
Analytical Study of the Continuous Increase in Tax Collection Due to GST Recovery in the Indian Economy
Authors: Tiwari Dr. Ajay Krishna , Khatana Mr. Devendra Singh
Published: April 2022

Abstract: The present research paper is based on in-depth research analysis of the continuous growth in tax collection due to GST collection in the Indian economy. GST was implemented on 01 July 2017 across the country under a single tax in the Indian economy. In April 2020 Till now the minimum GST collection was INR32172 crore whereas the highest ever GST collection was done. 141384 crores have happened in April 2021 (despite the second wave of the corona). GST compensation by the Center In the form of 23 states and 3 centers by taking loans on behalf of the states and union territories having legislative assemblies. Estimated compensation of INR 110000 crore in 20 installments between 23 October 2020 to 15 March 2021 in the governed territories. More than 100% of INR110208 crore was distributed. Apart from this, by 15 March 2021, all a loan of INR 106830 crore was raised by 28 states from the open market. Tax evasion in the GST regime Fake Input Tax Credit (ITC) has been a big problem since its inception. Even today not only normal Trade INR but also star exporting are evading tax by using fake ITC and defrauding the government. are putting In the last 02 financial year, the GST Council, in its many meetings, discussed many important issues like H. SN Code, Changes in the current structure of GST, Compulsory E-bill, a Cash deposit of GAT, GST Physical verification of registrations, action against CAs involved in fake invoices, GST refund, on receipt of bills Decisions were taken on reward, reduction in GST on electric vehicles, etc. Keywords: GST Collection, Indian economy, estimated compensation, Input Tax Credit, GST Council, GST refund.
A Survey on Blockchain Based Documentation Verification
Authors: Peyyala Jashuva
Published: April 2022

Abstract: Secure Doc verifier is a document verifier, a model that is used to verify educational certificates and organizational documents. The Prime factor of this model is to give a possible solution to the duplication of certificates in the educational system. And also, time consumption in the verification process and money used to spend on the third-parties services for the verification process. the proposed model achieves the security in the verification process and gives the transparent in the verification process.to achieve these all factors this model is implemented on blockchain network. blockchain is one of the secure and transparent networks. Apart from blockchain, IPFS is used in this model to store documents on a decentralized storage space. IPFS is a decentralized storage network, that stores any type of data on decentralized file storage. with decentralization this model achieves more secure and kept private. Not like centralized system that takes ownership on users’ data.
Survey on Face Recognition for Automation of Door Lock System
Authors: S Jishnu , M Nihitha Yadav. , Shafi Mohammed Faizan , Babu Divakar , B S K Mrs. Jayasudha
Published: April 2022

Abstract: In recent years, it is important to own a reliable security system that can secure our assets as well as to protect our privacy. The traditional security system needs an individual to use a key, identification (ID) card or password to access an area such as home and workplace. However, the present security system has many weaknesses wherever it is simply cast and taken. Most doors are controlled by persons with the employment of keys, security cards, countersign or pattern to open the door. The aim of this paper is to assist users for improvement of the door security of sensitive locations by using face detection and recognition. The proposed system mainly consists of subsystems namely image capture, face detection and recognition, email notification and automatic door access management. Face Recognition supported openCV is brought up because it uses Eigen faces and reduces the scale of face images without losing vital features, facial images for many persons can be stored in the database. The door lock can also be accessed remotely from any part of the world by using Telegram android application. The captured image from pi camera will be sent to the authorized person through email for safety purposes. Keywords: OpenCV, Raspberry pi, Telegram application, Email
Implementation of Activity-Based Language Week Program in Improving Arabic Communication Skills at Ma’had al-Jami’ah
Authors: Amin Irsal , Ritonga Mahyudin , Sobhan Sobhan , Kumar Tribhuwan
Published: April 2022

Improving Arabic speaking skills for non-native speakers are faced with serious problems, so educational institutions must be able to make new breakthroughs in efforts to improve communication skills. Ma'had al-Jami'ah IAIN Padangsidimpuan determines that a program is seen as part of efforts to improve Arabic communication skills, namely "activity-based language week". This study aimed to describe the implementation of the activity-based language week program at Ma'had Al-Jamiah IAIN Padangsidimpuan in Arabic learning, especially maharah kalam projected as an alternative to reduce the problematic Arabic skills of PTKI students. This study was carried out with a qualitative approach where data were collected through participatory observation, interviews, and document studies. Data were analyzed using the Miles and Huberman technique consisting of collection, reduction, presentation, and drawing conclusions. Based on the results, the activity-based language week program was well implemented in four activities with various activities, namely ilqa' al-mufrodat, muroja'ah, hiwar practice, and muhadhoroh lughoh. These four activities were proven to be able to minimize the difficulties of students in learning Arabic based on improving skills in using Arabic as a means of daily communication. This study recommends further researchers to conduct trials related to the effectiveness of its implementation or examine the language week program.
Children, Schooling, and COVID-19
Authors: Brushwood Rose Chloë , Bimm Morgan
Published: April 2022

This paper offers a review of the research on children, schooling, and disasters in order to identify critical information for the field of education and the practice of educational research in response to the COVID-19 pandemic. What do we know about the experiences of children and their interactions with schools during and following a natural disaster like COVID-19? The review answers this question and both identifies areas of study that need further attention and explores critical methodological approaches for further educational research. Areas of the research reviewed include children’s experiences of disaster, the educational impacts of disaster, the role of schools and teachers in responding to disaster, and methodological considerations for further research. The authors conclude that educational research can play a critical role in recovery efforts for children, teachers, and schools.
Investigation of the accuracy and convergence of the results of thin shells analysis using the PRINS program
Authors: Agapov Vladimir P. , Markovich Alexey S.
Published: April 2022

The theoretical foundations of compatible finite elements construction for static and dynamic analysis of single-layer and multilayer shells are discussed. These finite elements are implemented in the PRINS computer program. The paper presents verification tests to investigate the accuracy and convergence of the results of calculating various shells using these finite elements. Shell structures are widely used in various fields of technology - construction, mechanical engineering, aircraft construction, shipbuilding, etc. Specialists on the design and calculation of such structures need a reliable and accessible tool for the practical problems solving. Computer program PRINS can be one of such tools. It can be effectively used by engineers of design and scientific organizations to solve a wide class of engineering problems related to the calculations of shell structures. The paper describes the finite elements of the shells, implemented in the PRINS program. The results of verification calculations are presented, which confirm the high accuracy of this program.
Determination of natural vibration frequencies of reinforced cylindrical shell
Authors: Rustamova Mexseti Akif
Published: April 2022

Free vibrations of a reinforced cylindrical shell filled with liquid are investigated. The case of an orthotropic shell is considered when the cord filament is placed symmetrically with respect to the meridian of the shell. The motion of a fluid is potential and is described by a wave equation. The fluid moves without separation from the walls of the cylinders. The fluid pressure is taken into account in the equations of motion of the shells, and the velocities of the fluid and the shell are equalized at the boundaries. Representing a solution in a harmonic form reduces to a system of transcendental equations. Comparison of the solutions of the problems without a liquid and with a liquid shows the dependence of the frequency of the system without a liquid at the frequency of the system with the liquid. An inverse method is proposed for solving the equation. The inverse method for solving the problem has made it possible to construct a more accurate frequency spectrum of free oscillations of the system. For some values of the system parameters, the natural frequencies of the cylinder are determined.
G.N. Roerich’s study of the epic about Gesar
Authors: Shustova Alla M.
Published: April 2022

This article analyzes the contribution of G.N. Roerich in the study of Tibetan epic of Gesar. Long years spent on expeditions, communication with the authentic population in remote places of Central Asia, an open-minded attitude towards the natives, as well as knowledge of local languages allowed him to collect unique material concerning the existence of legends, stories, songs and epic tales about the king-warrior Gesar. Based on the analysis of the data obtained, G.N. Roerich came to the conclusion about the unity of the ancient culture of the population of Tibet. The epic about Gesar, in his opinion, was associated with the ancient religion worshipping the forces of nature and space, associated with the art of the animal style, as well as with the barrow and megalithic culture. Studies of the epic about Gesar open the way for a deeper and broader analysis concerning the presence in Asia of the cultural and historical community of peoples in the ancient era, as well as the theme of large migrations of ancient tribes that spread throughout the Eurasian continent symbols and images that are similar in their semantic content.
Chinese Concepts and Opportunities in Information Warfare: China-US Rivalry in Cyberspace
Authors: Katkova Evgeniya Yu. , Yunyushkina Anna S.
Published: April 2022

The research is devoted to the emergence of threats to information security and competition in cyberspace between the two largest powers - China and the United States. Over the past ten years, China has been actively developing offensive cyber capabilities, turning into a state with a combat- ready and modern army. Its technological level is behind the United States in many areas, but Beijing is rapidly closing the gap. Today, the information confrontation between these countries is of a strategic nature. Both China and the United States are investing large sums of money in the development of cyber technologies. The authors examine the different approaches of China and the United States to the methods of waging information wars and countering various challenges and threats in cyberspace. In conclusion, the authors come to the opinion that China will actively develop information technologies and build up its strategic potential in this area in the near future, which will lead to tougher competition among major powers in cyberspace.
Bai’at dalam Al-Qur’an menurut Pandangan Ibnu Katsir
Authors: Bahri Samsul , Zainuddin Zainuddin , Ismail Muhammad Husni Bin
Published: April 2022

Bai'at is one way to show a person's form of obedience to his leader. An incomplete understanding of bai'at can cause slander among Muslims. Moving on from the problem above, the author will examine Ibn Kathir's interpretation of the verses of bai'at. This research is bibliographic and data collection is done through the mauḍū'ī method. The results of the study show that the person who betrays the bai'at to the leader on the basis of obeying Allah and the Messenger, then Allah will inflict punishment on him, on the other hand, for those who obey the bai'at in matters that are ma'ruf on the basis of obeying Allah and the Messenger, then he will get a reward from Allah swt. Imam Ibn Kathir interprets the verse of bai'at as meaning "whoever obeys the apostle, then he has obeyed Allah." Bai’at merupakan salah satu cara dalam menampakkan bentuk ketaatan seseorang terhadap pemimpinya. Pemahaman yang tidak utuh terhadap bai’at dapat menimbulkan fitnah di antara umat islam. Beranjak dari persoalan di atas, penulis akan mengkaji tentang penafsiarn Ibnu Katsir terhadap ayat-ayat bai’at. Penelitian ini bersifat kepustakaan dan dalam pengumpulan data dilakukan melalui metode mauḍū’ī. Hasil penelitian menunjukkan bahwa Orang yang mengkhianati bai’at terhadap pemimpin atas dasar mentaati Allah dan Rasul, maka Allah akan menimpa azab baginya, sebaliknya bagi yang mentaati bai’at dalam hal yang ma’ruf atas dasar menaati Allah dan Rasul, maka ia akan beroleh balasan pahala dari Allah Swt. Imam Ibnu Katsir menafsirkan ayat bai’at sama artinya dengan “barangsiapa mentaati rasul, maka dia telah menaati Allah.”
Kommende artikler
Authors: Melander Preben
Published: April 2022

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Acute aortic regurgitation due to chordae tendineae rupture
Authors: Ali Jason , R Jonathan Weir-McCall , Ng Choo
Published: April 2022

A 60-year-old male presented with sudden onset chest pain and pulmonary
oedema. Investigation confirmed torrential aortic regurgitation of a
bicuspid valve. At surgery a ruptured chordae tendineae was identified
which had been supporting the left-right cusp commissure with loss of
attachment to the aortic wall. This case demonstrates that chordae
tendineae may be present as a supporting structure of the aortic valve,
and rupture can be a rare cause of torrential aortic regurgitation,
similar in pathogenesis to how it may be associated with acute severe
mitral regurgitation.
Production of proinflammatory cytokines by expressing Newcastle disease vaccine candidates in corn
Authors: Tanveer Sana , Malik Hafiza Ayesha , Shahid Naila , B.Salis Ibrahim , Imran Ayesha , Azam Saira , Latif Ayesha , Yasmeen Aneela , Hameed Rida , Rao Abdul
Published: April 2022

The efficacy of a plant-based vaccine produced in maize by expressing F
and HN immunogenic proteins under a seed-specific promoter against NDV
genotype VII was assessed using cell-mediated responses in chickens.
Using real-time PCR, the mRNA expression of F and HN PCR confirmed maize
plants was compared to non-transgenic control plants on a relative
basis. F and HN genes mRNA expression was found to be 20 and 60 times
higher in corn seeds than in leaves, respectively. In maize seeds, 35
ug/ml of F protein, or 0.6 percent of total protein, and 41 ug/ml of HN
protein, or 0.85 percent of total protein, were found using ELISA. The
boost in cell-mediated immune response was evaluated in chickens fed
with transgenic corn seeds in comparison with control groups. The qPCR
analysis showed an increase in the expression of Interleukin-1 (IL-1),
Interleukin-2 (IL-2), Interleukin-6 (IL-6), Interleukin-8 (IL-8),
Interleukin-10 (IL-10), interleukin-15 (IL-15), Interferon-α,
Interferon-β, Interferon-γ, and CCL3 when evaluated at 0-day, 7th day,
14th day, 21st day, 28th day and 35th day in chickens receiving
transgenic diet as compared to group 1 receiving non-transgenic diet.
The increase in cytokines production was comparable with group 3
immunized with conventional market vaccine. Furthermore, anti-NDV
antibodies were also found in the serum of chickens given maize
containing immunogenic proteins, but not in the serum of chickens fed a
normal diet, demonstrating the specificity of the antibodies created
through feeding. The data suggest that oral edible vaccinations are more
useful in the chicken industry than in injectables.
Longitudinal assessment of maternal depression and later life childhood asthma and wheeze: effect modification by child sex
Authors: Alcala Cecilia Sara , Scott Paloma Orozco , Tamayo-Ortiz Marcela , Hernández Carmen , Schnaas Lourdes , Carroll Kecia N. , Niedzwiecki Megan , Wright Robert O. , Téllez-Rojo Martha Maria , Wright Rosalind J , Hsu Hsiao-Hsien Leon , Rosa Maria Jose
Published: April 2022

Background: Studies report associations between maternal mental
health and adverse respiratory outcomes in children; however, the impact
of timing and duration of maternal distress remains understudied. We
sought to longitudinally examine associations between maternal
depression and childhood asthma and wheeze, and explore sex differences.
Methods: Maternal depression (n=605) were assessed using the
Edinburgh Depression Scale questionnaire, dichotomized at a clinically
relevant cutoff (>12) a) during pregnancy, b) postpartum,
and c) postpartum and subsequent time points postnatally (recurrent
depression). Report of wheeze in the past 12 months (current wheeze) and
asthma were obtained using a validated survey at 48 and 72 months.
Associations were analyzed using a modified Poisson regression adjusted
for covariates, and in interaction models. Results: Both
postpartum and recurrent depression were associated with higher risk of
current wheeze (RR: 1.88, 95% CI: 1.21, 2.92; RR: 2.39, 95% CI: 1.52,
3.78) and asthma at 48 months (RR: 2.79, 95% CI: 1.13, 6.87; RR: 3.14,
95% CI: 1.26, 7.84). In interaction analyses, associations were
stronger in females. Postpartum and recurrent depression were associated
with higher risk of current wheeze at 48 months in females (RR: 3.06,
95% CI: 1.48, 6.32; RR: 4.02, 95% CI: 1.91, 8.46) when compared to
males RR: 1.47, 95% CI: 0.84, 2.56; RR: 1.86, 95% CI: 1.04, 3.34).
Conclusions: Postpartum and recurrent depression were
associated with higher risk of wheeze and asthma in children, and
associations were stronger in females than males. Understanding the
temporal- and sex-specific effects of maternal depression may better
inform prevention strategies.
αCT1 Peptide Sensitizes Glioma Cells to Temozolomide in a Glioblastoma Organoid Platform
Authors: Che Jingru , DePalma Thomas J. , Sivakumar Hemamylammal , Mezache Louisa S. , Tallman Miranda M. , Venere Monica , Swindle-Reilly Katelyn , Veeraraghavan Rengasayee , Skardal Aleksander
Published: April 2022

Glioblastoma (GBM) is the most common form of brain cancer. Even with
aggressive treatment, tumor recurrence is almost universal and patient
prognosis is poor because many GBM cell subpopulations, especially the
mesenchymal and glioma stem cell populations, are resistant to
temozolomide (TMZ) the most commonly used chemotherapeutic in GBM. For
this reason, there is an urgent need for the development of new
therapies that can more effectively treat GBM. Several recent studies
have indicated that high expression of connexin 43 (Cx43) in GBM is
associated with poor patient outcomes. It has been hypothesized that
inhibition of the Cx43 hemichannels could prevent TMZ efflux and
sensitize otherwise resistance cells to the treatment. In this study, we
use a 3-dimensional organoid model of GBM to demonstrate that
combinatorial treatment with TMZ and αCT1, a Cx43 mimetic peptide,
significantly improves treatment efficacy in certain populations of GBM.
Confocal imaging was used to analyze changes in Cx43 expression in
response to combinatorial treatment. These results indicate that Cx43
inhibition should be pursued further as an improved treatment for GBM.
Predictors of fertility awareness-based method use among women trying to conceive and women contemplating pregnancy: a prospective cohort study.
Authors: Capotosto Melissa Perez , Lee Christopher , Jurgens Corrine , Wang Siwen , Mitsunami Makiko , Charlton Brittany , Chavarro Jorge
Published: April 2022

Objective: To identify predictors of fertility awareness-based method
use. Design: Ongoing, prospective internet-based cohort study. Setting:
Nurses living in the United States and Canada. Population: Women trying
to become pregnant or contemplating pregnancy. Methods: Multivariable
negative binomial regression. Main Outcome Measures: Fertility
awareness-based methods. Results: Among the 23,418 women with pregnancy
intention, 955 were trying to conceive and 2,282 were contemplating
pregnancy. The ongoing duration of pregnancy attempt and gravidity were
associated with the number of fertility awareness-based methods used
among women actively trying to conceive. Compared to women who had been
trying for two months or less, the number of methods was 29% (95% CI,
1.11—1.51), 45% (95% CI, 1.27—1.66) and 38% (95% CI,
1.21—1.58) higher for women who had been trying for 3-5 months, 6-12
months, or more than 1 year, respectively. Compared to nulligravid
women, the number of fertility-awareness based methods was 17% (95%
CI, 0.70—0.98) lower for women with a history of two or more
pregnancies. Among women contemplating pregnancy, those who were married
or in a domestic partnership used on average 39% (95% CI, 1.23—1.57)
more fertility awareness-based methods than unpartnered women.
Conclusion(s): Duration of ongoing pregnancy attempt and gravidity were
the only significant predictors for number of fertility awareness-based
method use among women trying to conceive, whereas partnership was the
only significant predictor among women contemplating pregnancy.Funding:
Supported by grants R24ES028521 and U01HL145386 from the National
Institutes of Health. Keywords: pre-conception, pregnancy planning,
fertility awareness-based methods.
A educação na visão de Immanuel Kant
Authors: Altmann Idio Fridolino , Casagrande Cledes Antonio , Jung Hildegard Susana , Das Neves Fabiana Moreno
Published: April 2022

Este artigo tem como objetivo descrever a compreensão de Immanuel Kant com relação à educação do homem. A metodologia empregada é a revisão de literatura em uma perspectiva hermenêutica, utilizando-se como base dos escritos do filósofo alemão do século XVIII, Immanuel Kant (1724-1804), especialmente o texto Sobre a Pedagogia (2012). Constatamos que, para Kant, o homem tem a necessidade de ser educado, pois a educação contribui para o seu desenvolvimento, constituindo a disciplina e a formação, seguindo a ética e a moral para estimular sua existência. O filósofo faz uma analogia da educação entre o homem e a natureza, destacando a sua importância, já que por meio dela o homem abandonará a animalidade, atingindo a liberdade e a autonomia, tornando-se um ser social, ou seja, um ser apto a viver em sociedade.
Diálogo em Ternura
Authors: Boareto José
Published: April 2022

O texto aborda a polarização a partir do contexto da Campanha da Fraternidade Ecumênica de 2021. Considerando a mensagem do Papa Francisco por ocasiãoda Campanha da Fraternidade, ele afirmou que, às vezes, parece que estamos diante deum mundo surdo. À proposta de uma conversão ao diálogo, reconhecemos que a basedo diálogo é a escuta. Para refletir sobre a escuta, oferecemos uma conceituação a partirda lectio divina. A escuta deve ser com amorosidade, e, para isso, refletimos sobre o domdo Espírito: a amabilidade (amorosidade) segundo a teologia paulina, o que pode serapreendido na carta encíclica Fratelli Tutti. Essa escuta com amorosidade só é possívelocorrer no ser humano desde o reconhecimento de sua condição humana, enquanto échamado a “poder ser” ternura, e só na ternura manifestada por Cristo na Cruz o homem/mulher encontra o sentido da sua existência e também da própria história. Queremos com este artigo contribuir para uma reflexão de antropologia teológica que nosajude a reconhecer valores antes evidentes nos relacionamentos interpessoais e sociais,os quais se fazem necessários de ser aprendidos novamente para que possamos, assim,realizar processos para o diálogo em ternura, enquanto exercício da educação para escutar com amorosidade.
O diálogo como um procedimento pedagógico transversal
Authors: Sí­veres Luiz
Published: April 2022

O diálogo, como um procedimento pedagógico transversal, será compreendido como um jeito de ser, uma maneira de saber e uma forma de agir. Essa dinâmica tridimensional, que compreende as dimensões antropológica, epistemológica epedagógica, respectivamente, é uma característica essencial do projeto educativo. O cenário atual e, em decorrência, a proposta educacional se apresentam, porém, comcaracterísticas dualistas e fragmentadas, fazendo emergir o questionamento: como desenvolver um procedimento pedagógico transversal em um contexto educacional monológico e disciplinar? Para responder a esse desafio, este texto tem por objetivo investigar a relevância do diálogo como um procedimento transversal, articulando o ser, o saber e o agir pedagógico na formação do educador e do educando. Considerando, portanto, essa abordagem, o método fenomenológico foi seguido, tanto para a teoria quanto para a empiria, por meio da compreensão do sentido e da interpretação dos dados da entrevista semiestruturada. Com base na revisão da literatura e na análise dos dados, pode-se concluir que o processo de ensino e aprendizagem,quando mediado pelo diálogo, pode contribuir com o significado educacional e com o sentido existencial.
Visibilidad de la revista Hospital a Domicilio
Authors: Sanz Valero Javier , Wanden-Berghe Carmina
Published: April 2022

La calidad de una revista depende de tres factores fundamentales: la gestión editorial, el impacto y la visibilidad de sus publicaciones. Las revistas científicas más prestigiosas en cualquier área de conocimiento trabajan de manera constante por mejorar en estos tres aspectos y, de manera muy especial para maximizar su visibilidad, lo cual implica que sus artículos serán visibles para investigadores y potenciales autores de todo el mundo.
Hiding in plain sight: combining field-naturalist observations and herbarium records to reveal phenological change
Authors: Lehmberg Emma , McKee Graydon , Rennie Michael
Published: April 2022

As the climate warms, northern ecosystems are experiencing warmer winters and seasonal climatic shifts. Vascular plants are expected to respond to climate change by adjusting flowering or seeding periods. To determine how a native mixed-wood boreal floral assemblage has responded to warming temperatures over the 20th century, we collated historical observations made by field-naturalists as well as voucher data from the Thunder Bay region of Ontario, Canada. Combining these datasets, we performed regression analyses on 11 species of spring-flowering vascular plants to evaluate temporal trends and used spring cumulative growing degree day (sGDD0) to determine the influence of climate on flowering times. Four species showed consistent positive temporal trends (i.e., flowered later with time), while four species (three of which also demonstrated temporal trends) showed negative trends with sGDD0 (i.e., flowered earlier with an increased number of degree days above 0°C). The unexpected observation of later flowering times but predicted observation of earlier blooming with increased sGDD0 indicates that the inclusion of climate metrics may be necessary to determine the response of native vascular plants to the onset of changes in their environment. These observations were not statistically significant when field-naturalist or herbarium voucher data were analyzed separately, possibly due to low statistical power. Combining data from both sources, however, revealed common responses to climate warming among species within an ecoregion.