bluuebunny/crossref_metadata_2025 huggingface dataset:
Avaliação do índice de caminhabilidade em espaços livres públicos: um estudo de caso no entorno de duas praças do município de Campos dos Goytacazes/RJ
Authors: Torres Thais Ferreira , Lettieri Ana Paula Pereira de Campos
Published: December 2021

Caminhar pelo espaço urbano pode propiciar trocas e atividades sociais durante o percurso do pedestre, além de constituir a forma de deslocamento mais natural, saudável, econômica e limpa para curtos trajetos, integrando ainda grande parte das viagens de transporte coletivo. No entanto, o ato de caminhar é sensível às condições ambientais e nem sempre nos deparamos com uma estrutura viária amigável para o pedestre. Estudar a caminhabilidade em regiões da cidade permite avaliar as condições do espaço urbano. Esse artigo buscou analisar a caminhabilidade no entorno de duas praças públicas inseridas na paisagem urbana da cidade de Campos dos Goytacazes – Praça do Santíssimo Salvador e Praça Santo Antônio – utilizando 15 indicadores para compor um Índice de Caminhabilidade, com classificações que variam de insuficiente a ótimo. Essa análise teve como propósito promover um novo olhar sobre o meio urbano sob a ótica do pedestre e foi dividida em seis diferentes categorias: calçada; mobilidade; atração; segurança viária; segurança pública; e ambiente. A análise resultou em um Índice de Caminhabilidade classificado como “bom” na Praça do Santíssimo Salvador e como “suficiente” na Praça Santo Antônio, demonstrando que o espaço destinado ao pedestre é mais bem estruturado na região central da cidade.
Conhecimento dos profissionais da rede pública de saúde sobre Constelação Familiar
Authors: Ferraz Beatriz Ritzmann , Rosa Lívia Oliveira , Gonçalo-Mialhe Camila
Published: December 2021

Objetivo: Verificar o conhecimento dos profissionais da rede pública de saúde sobre Constelação Familiar. Métodos: Estudo exploratório quantiqualitativo realizado por meio de questionários eletrônicos aplicados aos profissionais que atuam na rede pública em unidades de saúde que oferecem e que não oferecem Práticas Integrativas e Complementares em Saúde (PICS). As respostas foram analisadas tematicamente nas questões abertas e por meio de estatística descritiva nas questões fechadas. Resultados: Dos 20 participantes, 16 declararam sexo feminino (80%); 11 mencionaram saber o que era a CF (55%); 16 (80%) desconhecem que a CF é oferecida pelo SUS desde 2018. Os respondentes apresentaram “ideias convergentes” e “ideias divergentes” em relação ao conceito de CF adotado pelo Ministério da Saúde e manifestaram que a CF poderia contribuir com a área da saúde auxiliando os usuários a lidarem com os sentimentos/emoções e auxiliando os usuários a lidarem com as doenças. Conclusão: Embora a CF seja uma PIC reconhecida e seu uso na rede pública de saúde esteja regulamentado, os participantes desta pesquisa apresentaram conhecimentos incipientes sobre o tema.
Medi facials for dermatologists – Where to start
Authors: Goel Apratim , Chhapra Zeba Daanish
Published: December 2021

As dermatologists, we treat and care for the patient’s skin diseases and most dermatologists today are providing treatments to meet esthetic demands of our patients. An esthetic dermatology setup comprises treating various skin and hair conditions to achieve youthful, radiant skin for our patients. We choose various armaments such as peels, lasers, various energy devices, botulinum toxin, and even hyaluronic acid fillers to achieve the best outcome. Medi facials can be integrated into esthetic practice to achieve better esthetic outcomes with a feel-good factor to the client. In this article, we will understand what Medi facials are, what are the equipment required for Medi facials, and how we can combine medical procedures to cosmetic facials to achieve better outcome.
Chemical Biology Tools to Study Lipids and their Metabolism with Increased Spatial and Temporal Resolution
Authors: Simon Clémence , Feng Suihan , Riezman Howard
Published: December 2021

Lipids are important cellular components providing many essential functions. To fulfill these various functions evolution has selected for a diverse set of lipids and this diversity is seen at the organismal, cellular and subcellular level. Understanding how cells maintain this complex lipid organization is a very challenging problem, which for lipids, is not easily addressed using biochemical and genetic techniques. Therefore, chemical tools have an important role to play in our quest to understand the complexities of lipid metabolism. Here we discuss new chemical tools to study lipids, their distribution and metabolism with increased spatial and temporal resolution.
Computational Approaches to Investigate and Design Lipid-binding Domains for Membrane Biosensing
Authors: Srinivasan Sriraksha , Vanni Stefano
Published: December 2021

Association of proteins with cellular membranes is critical for signaling and membrane trafficking processes. Many peripheral lipid-binding domains have been identified in the last few decades and have been investigated for their specific lipid-sensing properties using traditional in vivo and in vitro studies.  However, several knowledge-gaps remain owing to intrinsic limitations of these methodologies. Thus, novel approaches are necessary to further our understanding in lipid-protein biology. This review briefly discusses lipid binding domains that act as specific lipid biosensors and provides a broad perspective on the computational approaches such as molecular dynamics (MD) simulations and machine learning (ML)-based techniques that can be used to study protein-membrane interactions. We also highlight the need for de novo design of proteins that elicit specific lipid binding properties.
Jet Colliding and Mixing Efficiency
Authors: Allemann Christophe , Varisco Massimo , De Luca Gianni , Estes Richard-Emmanuel
Published: December 2021

Two experimental methods, the Nile Red dye extraction and the Williamson ether synthesis in biphasic conditions, were used to characterize the mixing performance of a new cheap impinging jet colliding mixer from Gjosa and to compare it to other commercial micromixers (Caterpillar CPMM-R300, T-mixer, LTF MR-MX and LTF MR-MS). The Nile Red method shows that the Caterpillar mixer is the best one. Excellent results are also achieved with two Gjosa mixers in series. These results are not reflected in the Williamson ether synthesis, where the best mixer is the Gjosa one.
Biological capacity of Mongolian native cattle
Authors: Балдан Т.
Published: December 2021

Unique biological quality of Mongolian livestock that helps the animal withstand the cold and feed shortage seasons in despite of feeding pasture plants only for all year round is an evidence of its pasture usability. Better growth of hair and wool of hardy Mongolian livestock, which are able to grow under severe natural and climatic conditions, during summer and autumn, and fibers appeared around the hair base during cold season make the animals resistant to cold. Mongolia has a long tradition of raising livestock in the vast territory. This is based on a system of pastoral herding consisting of five kinds of livestock. Mongolians have specific, historical traditions of nomadic ways for pastoral animal breeding. Since ancient times they are bred the five kinds of livestock with unique capabilities, adapted to four seasons grazing under harsh natural and climatic conditions of Central Asian mountainous and used their benefits. Although Mongolian livestock breeds are well adapted to harsh weather conditions, their productivity is not especially high. Animal husbandry is the fundamental source of food consumption and raw materials for the national economy, contributing 20% of the total GDP. Livestock workers make up 34.5% of the total labor force. The livestock sector is responsible for 90% of total agricultural production and comprises 12.5% of all exports. Currently, Mongolia has: 2 breeds and 2 strains of horses, 4 breeds of camel, 3 breeds and 1 breeding group of cattle, 13 breeds, 3 breed groups and 3 breeding races and 3 strains of sheep and 7 breeds, 4 strains of goats forming genetic resources of Mongolian livestock. The main products of the livestock sector are meat, milk, wool, cashmere and hides. Due to the harsh climatic conditions of Mongolian livestock, their wools grow well in the summer and autumn, and during the cold season, cashmere is covered with cashmere and they are resistant to cold. Mongolians have specific historical traditions of managing nomadic husbandry of five types of livestock populations, which are adapted to all year round grazing under severe natural and climatic conditions of Central Asian plateau, growing and breeding of wealth producing livestock populations and utilizing their animal products since ancient times.
Control system software design of tunnel automatic car washing Machine
Authors: Ванг И.
Published: December 2021

This paper focuses on the control system of tunnel automatic car washing machine and puts forward a control scheme of automatic car washing system based on PLC control. This design uses domestic Hexin PLC as the core for control and man-machine interaction through touch screen, so as to control and monitor the work of the system. Each switch button, infrared sensor, ultrasonic sensor and limit switch are input to PLC as output signal, and then PLC controls the operation of each working part. This PLC based control system is more reliable, and easy to implement, in the actual use of simple operation, and easy to maintain, and have a good market prospects.
Research on the urban identity of inter-provincial mobile university students (The example of Wuhan university students)
Authors: Чжоу К.
Published: December 2021

With the booming development of higher education, increasingly inter-provincial mobile university students are emerging. As part of the migrant population, their psychological conditions as well as their living conditions need attention. Taking Wuhan, a city with 84 universities, as an example, this survey assesses students' sense of urban identity, examines the influencing factors and gives advice and suggestions for three universities.
Controlando internalidades: entre la economía y la psicología de la regulación
Authors: Rodríguez García Gustavo
Published: December 2021

Un creciente interés por la psicología aplicada a la regulación se ha traducido en estrategias de regulación por arquitectura o intervenciones sobre la base de nudges. Así, a la ampliamente desarrollada interacción entre economía y derecho, se suma el concurso de la psicología. No obstante, como se expone en el presente trabajo, se requiere un estudio más profundo de los costos y beneficios que implican determinadas intervenciones conductuales. En particular, el juzgamiento de las referencias ajenas y la transparencia del nudge presentan dificultades que todavía no han sido definitivamente resueltas por los entusiastas del Behavioral Law & Economics.
Algunas precisiones sobre los delitos de enriquecimiento ilícito y lavado de activos
Authors: García Cantizano María del Carmen
Published: December 2021

En este artículo se analizan los principales elementos que conforman la estructura típica del delito de enriquecimiento ilícito con el objetivo de delimitar en su justa medida cuál es el ámbito concreto de su aplicación legal en la práctica. A partir de ahí, se pretende definir qué relación existe entre los delitos de enriquecimiento ilícito y lavado de activos a fin de establecer criterios que faciliten una adecuada subsunción bajo cada uno de estos tipos penales.
Seguridad y salud: una nueva perspectiva de los sistemas de gestión de seguridad y salud con motivo de aparición de riesgos emergentes
Authors: Canova Talledo Karla
Published: December 2021

Con motivo del uso masivo de las tecnologías, la robótica, la intervención de la inteligencia artificial, la automatización, la aparición de nuevos riesgos biológicos, entre otros, las relaciones laborales vienen evolucionando de una manera muy particular, que obliga a que los sistemas de gestión de seguridad y salud en el trabajo vayan de la mano en este proceso. Por ello, el presente artículo desarrolla el marco de los riesgos emergentes y la necesidad de que nuestros sistemas de gestión se articulen y evolucionen desde todas sus perspectivas.
Nulidad de oficio de los actos administrativos
Authors: Rodríguez Manrique Carlos
Published: December 2021

La atribución que tienen los entes de la Administración Pública de anular de oficio sus propios actos administrativos, sin necesidad de recurrir a una autoridad jurisdiccional, constituye una potestad pública que genera una permanente tensión entre el principio de legalidad y la seguridad jurídica. Este artículo aborda esta manifestación de la revisión de oficio de las actuaciones administrativas partiendo de la distinción de figuras como validez, nulidad, revocación e inexistencia, para luego desarrollar, de manera crítica, la forma como la normativa administrativa vigente contempla la correlación de fuerzas entre los principios antes mencionados. Asimismo, se exponen las garantías procesales y los presupuestos especiales que deben presentarse para que las entidades públicas puedan ejercer correctamente esta potestad, sin afectar los derechos de los administrados.
Consideraciones prácticas en la adquisición parcial de acciones del fundador de una start-up
Authors: De la Piedra Ricardo , Melo Beatriz
Published: December 2021

El auge de las start-ups a nivel internacional ha generado que la actividad transaccional respecto a tales emprendimientos sea cada vez más constante. El Perú no es ajeno a este fenómeno y, en muchas oportunidades, los paquetes accionarios materia de ventas implican que el accionariado de la start-up quede dividido entre fundadores e inversionistas, y es sumamente importante conocer qué términos principales deben pactarse tanto en el contrato de inversión como en el convenio de accionistas que se genere como consecuencia del ingreso del inversionista en la sociedad.
Entrevista a Frank García Ascencios
Authors: Revista Ius et Praxis
Published: December 2021

Entrevista al profesor Frank García Ascencios.
Salivary Cortisol as a Stress Biomarker and Total Viable Count of Salivary Bacterial Microbiome among COVID-19 Patients
Authors: Enad Hind H , .Al-Mizraqchi Abbas S
Published: December 2021

Background: The COVID-19 virus outbreak had a massive effect on many parts of people's lives, as they were advised to quarantine and lockdown to prevent the virus from spreading, which had a big impact on people's mental health, anxiety, and stress. Many internal and external factors lead to stress. This negatively influences the body's homeostasis. As a result, stress may affect the body's capacity to use energy to defend against pathogens. Many recent investigations have found substantial links between human mental stress and the production of hormones, prohormones, and/or immunological chemicals. some of these researches have verified the link between stress and salivary cortisol levels. The aim of this study is to measure salivary cortisol as a stress biomarker as well as a total viable count of salivary bacterial microbiome among COVID-19 patients.
Materials and methods: a sample of 84 adults patients was collected who were divided into two groups: the COVID-19 group consists of 42 patients and the COVID-19 free group which consists of 42 subjects. All subjects undergo a PCR test to confirm their health status. The collection of Un-stimulated saliva was done. Laboratory investigations were carried out to measure the total viable count of the salivary bacterial microbiome by culturing on Brain Heart Infusion Agar and to evaluate the salivary cortisol level using cortisol kit (Elecsys Cortisol II).
Results: SPSS version 21 was used for statistical analysis. According to the statistical analysis, the salivary cortisol and total viable count of salivary bacterial microbiome values were substantially greater in the COVID-19 group than in the COVID-19 free group.
Conclusion: A positive association was found between salivary cortisol and the total viable count of the salivary bacterial microbiome. So, when the concentration of salivary cortisol is elevated in the COVID-19 group, the level of the total viable count of the salivary bacterial microbiome is also elevated.
Root and Root Canal Morphology: Study Methods and Classifications
Authors: Shihab Duaa M , Mahdee Anas F
Published: December 2021

Background: Morphology of the root canal system is divergent and unpredictable, and rather linked to clinical complications, which directly affect the treatment outcome. This objective necessitates continuous informative update of the effective clinical and laboratory methods for identifying this anatomy, and classification systems suitable for communication and interpretation in different situations.
Data: Only electronic published papers were searched within this review. Sources: “PubMed” website was the only source used to search for data by using the following keywords "root", "canal", "morphology", "classification".
Study selection: 153 most relevant papers to the topic were selected, especially the original articles and review papers, from 1970 till the 28th of July 2021.
Conclusions: This review divided the root canal analysis methods into two approaches; clinical and in vitro techniques. The latter has shown more precise non-subjective readings, on the other hand; the clinical methods provide direct chair side diagnosis for the clinical cases. The classification systems reviewed in the present study, started with the oldest trials that simply presented the root canal systems, according to the degree of angulation, or by coded Latin numbers or English letters. Then, the most recent systems were also presented that were persisted with continuous editions up to date. These new systems could briefly describe the root and root canal’s internal and external details in a small formulation, without confusion and in an easily communicated manner, highly recommended specially for students, teachers, and researchers
Evaluation of Cytotoxicity and Biocompatibility of Ti2AlC in Rabbits
Authors: Ibrahim Luma M , Jassim Raghdaa K , Al Gabban Ahmed
Published: December 2021

Background: The Titanium and its alloys are suitable for dental implant and medical applications. Biocompatibility of the materials is a major factor in determining the success of the implant and has a great impact on their rate of osseointegration. The aim of this study was to evaluate the biocompatibility and cytotoxicity of Ti2AlC in comparison to CPTi & Ti6Al7Nb in rabbits.
Materials and Methods: 10 male New Zealand White rabbits, weighing (2-2.5 kg), aged (10-12 months) were used in this study. Cylindrical implants were prepared from the study materials (CPTi, Ti6Al7Nb and Ti2AlC) with (8mm) height and (3mm) diameter for the evaluation of tissue response and disc specimens were prepared with (6 mm) diameter and (2 mm) thickness for evaluation of cytotoxicity MTT test. A histological study was performed at 2 & 6 weeks post- surgical implant insertion.
Results: Histological findings show that Ti2AlC has enhanced proliferation of osteo-progenitor cell and reported mature bone formation at 6 weeks. Moreover, Ti2AlC has recorded a higher percentage for viable cells by MTT test in comparison to CPTi and Ti6Al7Nb.
Conclusion: The new Ti2AlC dental implant is considered biocompatible and has showed a better bone formation than the CPTi and Ti6Al7Nb materials at 2 & 6 weeks.
Assessment of Coating Zirconium Implant Material with Nanoparticles of Faujasite
Authors: Mohammed Ahmed A , Hamad Thekra I
Published: December 2021

Aim: To evaluate the wettability and microhardness of Zirconium (ZrO2) dental material when coated with different concentrations of Faujasite.
Materials and methods: 30 circular disks produced from ZrO2, then each group is classified into 10 control groups, 10 coated groups with 3% Faujasite, and 10 coated groups with 7% faujasite by electro-spun tool to study variable properties in hardness and water contact angle of implant materials.
Results: This study stated the high hardness in 7% of faujasite concentration for ZrO2, in addition, the contact angle decreased gradually until reach 0 ᵒ in 7% concentration of faujasite with ZrO2
Conclusion: Water contact angle (WCA) declined till disappeared in (7% wt.) of faujasite coated with the ZrO2 group, also in the same group the microhardness became high compared with other groups due to alteration in surface morphology of substrate, and properties of coated material.
The Effect of Recipient Jaw and Implant Dimensions on Pre- and Post- Loading Dental Implant Stability: A Prospective Clinical Study
Authors: Al-Assaf Dhuha A , Bede Salwan Y
Published: December 2021

Background: Implant stability is a mandatory factor for dental implant (DI) osseointegration and long-term success. The aim of this study was to evaluate the effect of implant length, diameter, and recipient jaw on the pre- and post-functional loading stability.
Materials and methods: This study included 17 healthy patients with an age range of 24-61 years. Twenty-two DI were inserted into healed extraction sockets to replace missing tooth/ teeth in premolar and molar regions in upper and lower jaws. Implant stability was measured for each implant and was recorded as implant stability quotient (ISQ) immediately (ISQ0), and at 8 (ISQ8) and 12 (ISQ12) weeks postoperatively, as well as post-functional loading (ISQPFL). The pattern of implant stability changes throughout the study period and its correlation with the recipient jaw and the DI dimensions were evaluated.
Results: There was a significant difference in ISQ values throughout the study. DI stability in the maxilla was significantly higher than that in mandible for the ISQ0, with no significant effect for the rest time points. The effect of implant diameter was significant with DI of 4.1mm diameter being more stable. While for the length, there was no significant difference regarding its effect on ISQ values through-out the study period.
Conclusions: DI inserted in the maxilla demonstrated better primary stability with no effect of recipient jaw on secondary stability and after functional loading, also DI with wider diameter had better stability throughout the study whereas DI length showed no significant effect on stability
Questioning the Existence of The Indonesian Commision State : An Idea of Reconstruction
Authors: Antari Putu Eva Ditayani
Published: December 2021

This research focuses on the phenomenon of the large number of state commissions in Indonesia, especially in the post-reform era. The purpose of this study is to describe the classification of state commissions in Indonesia. Furthermore, through the idea of simplifying the state commission, it will be able to overcome the problems that often occur due to the large number of state commissions. Through doctrinal legal research using a conceptual and comparative approach, it is known that state commissions are formed as a form of democracy, where there are independent institutions with the main task of supervising the three axes of state power (trias politica), especially in the sphere of government power. This state commission has a legal basis for the formation of various institutions through laws, government regulations, or presidential regulations so that not all state commissions have an equal position in the state administration. Furthermore, the incidental and responsive nature of the formation of state commissions often results in overlapping powers of state commissions. In order to resolve this, the idea is to make simplifications for the current State commission. The act of simplification is carried out by only maintaining a few State commissions that are capable of supporting the spirit of democracy in the State. Meanwhile, other commissions were merged into institutions of other countries. Furthermore, it is given legitimacy based on law to the State commission, so that it is not difficult to determine its position in the Indonesian constitutional system
THE WEAKNESSES OF ALTERNATIVE INSTITUTIONS FOR DISPUTE RESOLUTION IN FINANCIAL SERVICES SECTOR
Authors: Christiani Theresia Anita , Kastowo Chryssantus
Published: December 2021

There are weaknesses in the Financial Services Authority issued POJK No. 61/POJK/2020 concerning Alternative Dispute Resolution in the financial services sector. It hampered the objectives of the regulation. A concept proposal is needed to overcome the existing weaknesses. This research uses normative juridical analysis.  This research dose on the laws and regulations that apply in Indonesia relating to the settlement of disputes in the financial services sector. This study finds a proposed concept to overcome the weaknesses of Alternative Dispute Resolution in the financial services sector. The proposed idea empowers legal culture, legal substance, and legal culture as legal system theory. This research is limited to study based on secondary data, so there is no primary data.
THE CREDIT RESTRUCTURING AS A FORM OF PROTECTION AGAINST CUSTOMERS DURING THE COVID-19 PANDEMIC
Authors: Agustina Rani Sri
Published: December 2021

The submission of credit restructuring during the covid pandemic is a form of legal protection for customers who have difficulty paying credit. The COVID-19 stimulus policy in the banking sector was issued after observing developments in the economic impact related to the spread of COVID-19, which is still continuing globally and domestically. The approach method used is empirical juridical. The results of the research obtained stated that debtors who were affected by COVID-19, including micro, small and medium business debtors, were having difficulty fulfilling their obligations to banks, because the debtor or debtor's business was affected by the spread of COVID-19 either directly or indirectly to the economy. So far it has been running efficiently according to the restructuring agreement. The customer pays according to the agreement that has been made. Credit restructuring to maintain credit quality, which saves from bad credit.
REHABILITATION ON VICTIMS OF DRUGS ABUSE IN JUDICIAL DEVELOPMENT
Authors: Hamamah Fatin
Published: December 2021

Drug abuse is increasingly prevalent in Indonesia. In connection with the problem of narcotics abuse, a criminal law policy is needed that positions narcotics addicts as victims, not perpetrators of crime. Implementation of rehabilitation is the realization of a rule, this is very important because with an implementation it can be known whether a rule has actually been implemented or not. The research method used is normative juridical, the results obtained state that the application of rehabilitation for Narcotics Abuse Victims is an effort to treat and recover Narcotics Addicts and Narcotics Abuse Victims carried out by the authorities in rehabilitation institutions. The rehabilitation stages for Narcotics Addicts and Victims of Narcotics Abuse are: 1) Initial Acceptance Stage, 2) Detoxification Stage, 3) Pre-Rehabilitation Stage, 4) Coaching and Guidance Stage, 5) Reintegration Stage, 6) Advanced Guidance Stage and 7) Stage Integration into Society.
PERSPECTIVE OF INTERNATIONAL LAW ON MARITIME DISPUTE: CASE BETWEEN KENYA AND SOMALIA
Authors: Gunawan Yordan , Salim Andi Agus , Asirwadana Ewaldo , Prasetyo Satya Bayu
Published: December 2021

The research analysed the maritime dispute between Kenya and Somalia under the international law perspective. Both states have been experiencing maritime disputes over maritime boundaries of more than 100,000 sq km of seabed in the waters of the Indian Ocean. They began to clash after Somalia accusing Kenya of illegally granting exploration rights to resources in the waters to multinational companies, Total and Eni. As Kenya declared, the waters of the East African Coast are one of the hottest oil exploration prospects in the world, and the contested area has hydrocarbon reserves. The research method is normative legal research. Accordingly, the nature of the research was descriptive-qualitative with data collection techniques by conducting a literature study. The research shows that maritime boundary dispute has worsened diplomatic relations between Kenya and Somalia. Prior to bringing the case to the International Court of Justice (ICJ), the two states agreed to resolve the dispute through bilateral negotiations. However, the case was still unsettled. Therefore, Somalia decided to bring the case before the Court.
PLANNING OF SALES AND OPERATIONS (S&OP) AS A TOOL FOR OPTIMIZING THE PROCESS OF MATERIAL AND TECHNICAL SUPPORT OF THE OIL AND GAS COMPLEX
Authors:   Tashkent state technical university named Islam Karimov Of the Republic of Uzbekistan, Zagrebelskaya Milena Vladimirovna
Published: December 2021

The article providesthe main problems of oil and gas enterprises in the supply chains in the loop of procurement based onexample of Uzbekneftegaz. The possibilities of modern information logistics technologies in solving the above problems are reflected. The author's model of integratedplanning based on the logistics technology Sales & Operations Planning, taking into account the peculiarities of the oil and gas industry, is proposed for implementation at oil and gas enterprises in order to improve the efficiency of the planning and implementation of business processes.Key Words:logistics, supply chain, sales and operations planning, S&OP, oil and gas complex, integrated planning
OPTIMAL HARDENING TREATMENT OF CAST PARTS OF MACHINES WITH A HARD-ALLOY WEAR-RESISTANT COATING
Authors:   Branch of the Tashkent State Technical University in Almaliq of Uzbekistan, Tilabov Bahodir Kurbanovich , Alimbabayeva Zulkhumor Latipovna
Published: December 2021

The article presents research materials on thestructure and properties of hard-alloy coatings obtained in the process of casting products using gasified models. The composition and properties of steel were studied, as well as the hardness and microhardness of the surface and subsurface layers of castparts. The relative wear resistance of tests performed in laboratory and field conditions is analyzed. The final modes of heat treatment with double phase recrystallization for cast parts are carried out. It is shown that heat treatment with double phase recrystallization increases the wear resistance of hard-alloy coatings and finished products by 3-4 times.Keywords: gasified model Casting, hard-alloy coating, high-carbon steel, hardness and microhardness, microstructure, heat treatment with double phase recrystallization, abrasive wear resistance and durability
Temas polêmicos em direito
Authors: Gonzalez Junior Fernandes Fernando
Published: December 2021

Coletânea de textos sobre temas em direito como planejamento familiar, reprodução humana, orientação sexual e doação de sangue, carreiras jurídicas da mulher na atualidade, sistema prisional, extinção dos contratos, penhora de animais, evidência cautelar e satisfativa, implicação criminal decorrente das relações virutais, terceirização de atividade fim e intolerância religiosa
SENSORES E CENSORES
Authors: Kothe Flávio R.
Published: December 2021

"A arte que servisse para enaltecer a grandeza dos senhores e mostrar a baixeza dos escravos estava aí dentro dos padrões da “veritas aestheticologica”. Isso pode ser comprovado em Aristófanes e Plauto, como em Homero e Platão. O cristianismo contrapôs a tese de que todos os humanos teriam alma, mas soube conviver com a escravidão durante séculos, inclusive sacramentando-a como vontade divina (baseando na suposta maldição de Noé). Baudelaire fez, porém, no poema sobre “A raça de Caim”, a inversão do discurso bíblico. Quando se fala sobre a escravidão antiga, parece que o problema não nos afeta: nosso “correto” não vê o assalariado, o desempregado e quem vive de bicos como escravos modernos, mais baratos que os antigos. Não nos preocupamos com o que incomoda. [...]
Pelos ardis e traços da arte de ilustrar
Authors: Araujo Rodrigo Costa
Published: December 2021

A arte da ilustração e o livro ilustrado são, sem sombra de dúvida, presentes aos olhos, delicadezas e mistérios que encantam a qualquer leitor, de qualquer idade. O Traço e a prosa: entrevistas com ilustradores de livros infantojuvenis (2012) é uma coletânea sobre artistas ilustradores organizada por Odilon Moraes, Rona Hanning e Maurício Paraguassu, da editora Cosac Naify e que trata desse assunto, especificamente.O livro é composto de doze entrevistas com autores/ilustradores brasileiros experientes na área, e inova em acervos e fontes para pesquisadores e estudantes da área de literatura infantojuvenil, trazendo boa amostra do que vem sendo produzido no Brasil em termos de ilustração e de narrativa.
Português de/em Angola: Peculiaridades linguísticas e a diversidade no ensino
Authors: Timbane Alexandre António , Sassuco Daniel Peres , Undolo Marcio
Published: December 2021

A Língua Portuguesa surgiu na Península Ibérica e se espalhou pelo mundo por meio do processo de colonização. Após o contato entre o português e as línguas autóctones em Angola iniciou uma nova configuração linguística, com características peculiares ou próprias o que contribuiu para o surgimento da variedade angolana do português. O artigo 19º da Constituição da República de Angola (2010) estabelece a LP como a única língua oficial. A variedade angolana do português distanciou-se do Português Europeu ao longo do tempo, daí que é de suma importância que haja debates que visem caracterizar e descrever esta nova realidade sociolinguística. Este ebook tem como objetivo atiçar debates sobre a variedade  angolana do português buscando refletir as peculiaridades da variedade por forma a que se possa caminhar para a normalização e criação de dicionários e gramáticas que possam ser utilizadas no ensino de português em Angola.
Selective determination of rhodium and iridium in the urban environment using the catalytic method
Authors: Khomutova E. G.
Published: December 2021

The problem of studying the level of technogenic pollution of the environment with platinum group metals is attributed first to the release of platinum metals into the environment together with the exhaust gases of cars using afterburning catalysts containing Pt, Pd, Rh. The pharmaceutical, electronics and jewelry industries the waste of which contains PGMs also contribute to the pollution of the environment. A number of studies have shown the toxic effects of PGM on humans. The goal of the study is to obtain new information about the level of technogenic pollution of the environment with platinum group metals (such as water-washings from roads, bio-collector plants, roadside dust), which necessitates developing of the method for sample preparation and determination of rhodium and iridium. A technique of sample opening and determination of rhodium and iridium in environmental objects, water-washings from roads, bio-collector plants, roadside dust is proposed. To increase the selectivity of rhodium determination, the samples were treated with a mixture of concentrated perchloric acid and sodium periodate when heated to boiling, which provided more than 5-fold increase the rhodium signal. Moreover, the permissible excess of iridium and ruthenium was increased by 5 and 20 times, respectively, due to the conversion of other PGMs into catalytically inactive forms. The indicator reaction of sulfarsazen oxidation by periodate was used in the kinetic determination of rhodium and iridium. The correctness of the results obtained by the developed method was confirmed by the ETAAS method. The determined content of Rh and Ir: in roadside waters (μg/liter) up to 0.015 and 0.005; in collector plants (g/ton) up to 0.030 Rh and 0.022; in street dust (g/ton) up to 0.05 and 0.025, respectively. The standard deviation of the repeatability of the determination results does not exceed 0.07 (Rh) and 0.12 (Ir). The developed method of opening samples and determining rhodium and iridium in environmental objects provided a great bulk of information about the content of rhodium and iridium in water-flushes from Moscow roads, bio-collector plants, roadside dust, which correlate fairly well with the scarce data from other geographic regions available in the literature and our earlier results on rhodium content in dust. The developed technique made it possible to obtain data on the level of technical pollution of the environment with PGMs in places with different traffic density in Moscow.
Study of Ti – Al based high-temperature cermet filters
Authors: Kirillov A. O. , Uvarov V. I. , Kapustin R. D.
Published: December 2021

Operation in corrosive media and/or at high temperatures requires improved characteristics of the performance and durability of filtering equipment. The Ti – Al intermetallic system combines low density with high strength and exhibits high resistance to oxidation and corrosion at elevated temperatures. We present the results of studying high-temperature Ti – Al cermet products (filters) with nanoscale pores. Filters were obtained from a mixture of Ti and Al powders (mass ratio 40:60) by thermal explosion. XRD methods showed that the synthesized material consists of two main phases: TiAl3 and Al2O3. The microstructure analysis revealed the presence of large-sized TiAl3 structures and spherical Al2O3 aggregates enveloped by nanostructured TiAl3. Moreover, nanoscale fibrous TiAl3 compounds forming a multilevel developed cobweb-like structure are observed in the entire volume of the pore space of the material. The open porosity of the material was 48%, the pore size was 0.1 – 0.2 μm, the efficiency of the porous material was 99.999%, the resistance to gas flow was 100 mm of water column, and the filtration index was 0.062. Thermal tests revealed the possibility of effective use of filters under conditions of elevated (up to 800°C) temperatures and corrosive media due to the chemically stable and heat-resistant binary structure of the material. The results obtained can be used to improve the methodology of the development and operation of high-temperature cermet filters based on Ti – Al.
Study of the heat capacity of VZhM4 nickel superalloy using differential scanning calorimetry, adiabatic and mixing calorimetry
Authors: Shorstov S. Yu. , Marakhovsky P. S. , Pakhomkin S. I. , Razmakhov M. G.
Published: December 2021

An increase in the operating temperatures of assemblies and parts of modern aircraft is a key task for the aviation industry which entails developing of new materials that meet the increased requirements for their operational characteristics. A high level of the accuracy and reliability of the determined properties is one of the most important factors in designing high-temperature metal, ceramic and heat-shielding materials. The features of a particular measurement procedure, as well as their hardware design, do not always ensure the specified accuracy of experiments over the entire temperature range. We present the results of studying the heat capacity of VZhM4 nickel superalloy in the temperature range 100 – 1360° C by the methods of differential scanning calorimetry (DSC), adiabatic and mixing calorimetry. The data of the DSC analysis of the alloy, the temperatures of phase transformations and temperature dependences of the specific heat of the material are analyzed along with the assessment of their accuracy at different temperature intervals. A comparative analysis of the studied measurement procedures complements the research. The results obtained can be used in the development of new materials and in the study of the specific heat capacity of metal products in a wide temperature range.
Evaluation of the threshold for the development of fatigue cracks in a railway steel under harmonic and operational loading
Authors: Lebedinsky S. G. , Naumov O. V.
Published: December 2021

The results of experimental studies of the fatigue crack development in 20GFL steel specimens cut from a cast bolster of a freight car are presented. The ratio of the threshold stress intensity coefficient Kth determined from the kinetic diagram of fatigue fracture and from the average parameters of the operational loading process is considered using the experimental results with a simulation of operational loading. Tests were carried out upon the development of permanent blocks of crack opening in the specimen (in a rigid loading mode). The operational process is presented in the form of a block of consecutive loading cycles recorded during the test of the car frame in conditions typical for a straight section of the railway track. The threshold operational level is determined by the algorithm of gradual reduction of the loading similar to the original process. The regularities in a decrease of the rate of crack development and corresponding decrease in the load were determined. Subsequent extrapolation of the obtained experimental regularities to zero value of the crack propagation rate provided estimation of the threshold loading level, similar to the initially specified value. It is shown that the value of the threshold level of the fatigue crack development in low-alloy steel 20GFL obtained from the fatigue fracture diagram (i.e., under harmonic loading) is significantly higher than that obtained from the estimate based on the average values of the operational loading process. The considered model of operational loading gives greater damage compared to harmonic loading, on the basis of which the survivability of structural elements is usually assessed.
Procedure for determining the constants of JH-2 (Johnson – Holmquist) dynamic fracture model for brittle materials
Authors: Krutova O. G. , Berendeev N. N. , Chuvildeev V. N. , Melekhin N. V.
Published: December 2021

A simplified method for evaluating the constants in the JH-2 (Johnson – Holmqvist) model of the dynamic fracture for brittle materials is presented. The classical procedure suggests the use of 21 independent parameters describe the material, and the problem of their determination entails a large number of calculations experiments which hamper the use of the JH-2 model. The proposed technique requires fewer complex calculations and experimental data to determine the parameters of the material thus making it more feasible in use. In this work, the technique is used to search for the parameters of aluminum oxide (Al2O3) with a density of 99.5%, which is the material of a ceramic barrier subjected to high-speed interaction with the impactor. We present the results of three tests for penetration of a corundum plate: two of them are used to determine the constants of the model, and the third is used to verify the obtained values. Note that, the results obtained using the presented approach match quite accurately the experimental data, which is demonstrated in the course verification of the procedure.
Study of the destruction of the chassis main cross member made of VT22 alloy
Authors: Naprienko S. A. , Levchenko A. A. , Avtaev V. V.
Published: December 2021

The reasons for the destruction of the chassis main cross member made of alloy VT22 are considered and analyzed in bench test conditions. The chemical composition, mechanical properties, as well as macro- and microstructure of the material were studied. The tests of the cross-arm material for crack resistance and low-cycle fatigue (LCF) with the determination of the durability were carried out. The results of analysis proved that material meets the declared performance characteristics. A fractographic study of the traverse fracture showed that the fracture occurred from several foci according to the fatigue mechanism. The length of the longest fatigue crack was 1.7 mm and the critical stress intensity factor KIc was thus attained. Proceeding from the dimensions of the part at the site of fracture, the maximum crack length and the value of the critical stress intensity factor obtained experimentally KIc = 56.5 MPa • m1/2, we have calculated the nominal tensile stress at the moment of fracture. The calculated value of the nominal stresses is 1022 MPa, which is comparable to the yield strength of the material (1100 MPa). A high level of tensile stresses in the loading cycle is considered the most probable reason for the destruction of the chassis main cross member in the conditions of bench tests.
The Interesting Link Between Neurocysticercosis and Glioblastoma in a 41-year-old Hispanic Female
Authors:   Teresita Gonzalez MD1, Pyi Phyo Aung MD1, Atif Hussein MD2
Published: December 2021

Neurocysticercosis (NC) is a common condition worldwide while glioblastoma is the most common brain cancer among adults but overall, a rare disease. NC is the most common cause of seizures in developing countries. Although no causal relationship is established, there have been an association previously reported between NC and glioblastoma. Here we present a case of a 41-year-old female who was diagnosed with NC, treated with antiparasitic medications who developed worsening neurologic deficits despite treatment, and was subsequently diagnosed with a large left frontotemporal mass consistent with glioblastoma. Patient then underwent treatment with concurrent radiation and temozolomide.
Information Systems Development Methodologies: A Review Through a Teleology Approach
Authors: Kavvadia Helen
Published: December 2021

The information systems analysis and design methodologies devised at the outbreak of the third industrial revolution shaped the systems analysis disciple and have trickled down to all systems influencing most aspects of human development. To cope with the explosion of digital technology, these methodologies had to be developed rapidly, drawing from a wide range of theoretical backgrounds, based mainly on the “hard” scientific method and the “softer” systems approach. In the run-up to industry 4.0, with multiple information systems emerging, reflection on systems’ design fundamentals is important. Intended to serve human activity and well-being, information systems are anthropocentric. Their success lies in their ability to serve human goals. Information systems analysis and design methodologies play a role in this by ensuring the best match between what is sought from systems and what they deliver in terms of the systems’ underlying final cause, or “telos”. The paper investigates the teleological orientation of four founding systems analysis and design methodologies. Using the Wood-Harper and Fitzgerald taxonomy in order to identify the conceptual origins of the four methodologies under review, it categorizes and subsequently incorporates them in an extended taxonomy, assesses whether and how they are devised to cater to the incorporation of goals and explains the inferred results based on the taxonomy. The paper posits that the founding information systems analysis and design methodologies do not have a marked teleological orientation and do not dispose of techniques for adequately incorporating systems’ goals. Doi: 10.28991/HIJ-2021-02-04-09 Full Text: PDF