bluuebunny/crossref_metadata_2025 huggingface dataset:
Uso de terapias complementares para alívio da dor no trabalho de parto em uma maternidade pública: um estudo descritivo
Authors: Pereira Mariana Quintela Rodrigues , Rodrigues Beatriz Gonçalves , Figueiredo Eduardo Oliveira , Silva João Pedro Moreira Gonzalez , Marques Amanda Damian , Setta Helton José Bastos
Published: December 2021

Introdução: A analgesia de parto é um direito de toda mulher e oferecê-la é essencial conforme as boas práticas médicas na assistência ao parto. Há evidências de que a redução da dor impede o aumento exagerado da frequência cardíaca e da pressão arterial maternas. Sob esse panorama, as terapias complementares para alívio da dor (TCAD) no parto, como deambulação, cromoterapia, banho de aspersão, massagem, musicoterapia, bola suíça e aromaterapia, recebem destaque na assistência obstétrica humanizada. Alternativamente aos métodos farmacológicos, as TCAD apresentam a vantagem de não oferecerem tantos efeitos adversos e contraindicações. Além disso, essas técnicas permitem maior autonomia e postura ativa da mulher, elencando seu protagonismo no trabalho de parto. Objetivo: Avaliar o uso de métodos não farmacológicos para alívio da dor no trabalho de parto em uma maternidade. Métodos: Trata-se de estudo descritivo transversal, em que foram incluídas 96 parturientes de uma maternidade pública do Rio de Janeiro, realizado no período de agosto a novembro de 2019. As variáveis analisadas foram o uso de métodos não farmacológicos para alívio da dor durante o trabalho de parto e o tipo de método adotado. Foram utilizados, para tabulação de dados e análises estatísticas, os programas Microsoft Office Excel e R, respectivamente. Resultados e conclusão: Observou-se que em 85% (n=82) dos partos houve uso das TCAD, enquanto em 15% não houve (n=14). As três TCAD mais utilizadas, em ordem de frequência, foram: banho de aspersão (70,45%), deambulação (67,04%) e técnicas de respiração (46,6%), seguidas de massagem (10%), penumbra (8%), musicoterapia (7%), bola suíça (5%) e cromoterapia (5%). A média de TCAD utilizadas por parturiente foi de 4,3. O percentual de mulheres que utilizaram de uma a três TCAD em seu parto foi de 33,38% (n=33), de quatro a seis foi de 33,33% (n=32) e de sete a 10 foi de 17,71% (n=17). Também foi realizada uma análise referente à mediana do tempo de parto, que avaliou partos que utilizaram TCAD e partos que não as utilizaram e não apresentou resultado estatisticamente relevante (valor p=0,12). Observou-se que as TCAD foram amplamente utilizadas nos partos vaginais da maternidade em questão, de acordo com as recomendações da Organização Mundial da Saúde (OMS) para a assistência respeitosa ao parto. A realização de estudos posteriores que descrevam condutas durante a assistência ao parto vaginal e seus benefícios para o trabalho de parto e para a experiência materna pode ser interessante para estimular a implementação dessas práticas em outros serviços de obstetrícia.
Hospital Survey on Patient Safety Culture in Dental Hospitals in the Twin cities, Pakistan
Authors: Rizwan Ghina , Rizwan Zarnab , Anwer Bhatti Usman , Muhammad Muhammad , Javed Mariyah , Liaqat Rana Faisal
Published: December 2021

Objective: The purpose of our research is to evaluate the patient safety culture at Islamabad and Rawalpindi teaching hospitals. Materials and methods: A validated and slightly modified questionnaire was sent as a google forms link via WhatsApp and email to different teaching dental hospitals in the twin cities. The returned questionnaires were examined with IBM's statistical package for social sciences (version 22).). Results: 139 complete questionnaires were analyzed and results were calculated as average positive and average negative responses. Conclusion: This pilot study demonstrated that degree of patient safety in general in the Hospitals of Pakistan was acceptable. The number of incident reports were very low. Many participants also stated that the hospital is only concerned about patient safety after an unfavorable incident occurs., but they also reported that mistakes always lead to positive outcomes and the departments coordinate well with each other. Key words: Patient safety, incident reports, dental teaching hospital.
Prevalence of Cervical Spondylitis in Dentists of Lahore
Authors: Rashid Muhammad Salman , Manzoor Qurat Ul Ain , Haide Irsam , Ashraf Aroosa , Jabbar Khan Uzma , Shafi Nighat
Published: December 2021

Aim: To analyze prevalence of cervical spondylitis among dentists practicing in Lahore. Methods: A cross sectional survey of 6 months was conducted on 110 dentists practicing in dental clinics of Lahore were examined using neck disability index performa. SPSS Version 24 used for entering/analyzing the data. Results: In 110 individuals, 22% dentists including males (n=19%) and females (n=24.2%) were suffering from cervical spondylitis. According to neck disability index 34.5% had no disability, 47.2% had mild, 10.9% had moderate, 5.4% had severe disability and only 1.9% had complete disability. The major number (30%) was among 41-50years, and also statistically significant difference was observed (p-value = 0.02). Similarly maximum number of cervical spondylitis was found among females, 15(24.2%) but statistically insignificant difference was observed with respect to gender (p-value = 0.493). Longer practicing experience had also significant impact on the occurrence of spondylitis (p-value <0.001). Conclusion: Dentists are likely to have neck pain prevalent in them and very few had cervical spondylitis (22%) but the damage could be reduced if postural changes and regular exercises could be adapted. Keywords: Cervical Spondylitis, Neck Disability Index, Postural Changes
Online teaching in the era of Covid-19: Comparison between power-point vs video Tutorial: students’ perception
Authors: Waqar Fareesa , Riaz Beenish , Afridi Huma , Sharif Shumaila , Shadab Wajiha , Khan Afridi Itaat Ullah
Published: December 2021

Aim: To compare students perception towards use of video tutorial versus conventional power point presentation for online medical teaching Study design: Comparative descriptive survey Place and duration of study: The online study was conducted in the Department of Gyne. & Obs., Islamic International Medical College Rawalpindi & Sialkot Medical College Sialkot on Ms-Teams from 21st July 2020 to 21st October 2020 Methods: One hundred and one students from 4rth year MBBS participated in the study. Students were taught a given topic on power point presentation and then through a video tutorial online on Ms -Teams. Data was collected using a validated questionnaire. Students were inquired to express their perceptions & attitudes regarding the online teaching method, using a five point Likert scale. All the data was analyzed on SPSS version 20. Results: Out of 101, there were 38 males and 63 female students with ages ranged between 22 to 26 years. The mean score for video tutorial was higher than the mean score for Power Point in content understandability. There was a statistical difference in content understandability, effectiveness of teaching technique and attitude towards two teaching techniques (P< 0.05). Students had more positive attitude towards watching an online video than PowerPoint, which implied it was more entertaining, engaging and effective. Discussion was more spontaneous with a video tutorial as compared to Power Point. Students were involved more and enjoyed higher level of interaction. Conclusion: Online video tutorials were more effective as compared to the power-point presentations in content understandability of students and their learning processes. Keywords: Online teaching, Covid 19, Video tutorial, power point presentation
Occupation and Treatment Outcome of Multi-drug resistant tuberculosis Patients
Authors: Kashif Munir Muhammad , Rehman Sana , Nazir Aamir , Azhar Hajra , Riaz Iqra , Hanif Asif , Saeed Saqib
Published: December 2021

Background: Tuberculosis is a contagion from ancient times comprising around one 3rd of global population on the wedge of infection with Mycobacterium tuberculosis complex where under developed and developing countries is coping with high burden of the disease. Aim: To observe the most prevalent occupation and treatment outcome in both Genders of MDR TB patients. Methodology: Health Research Institute-National Institute of Health TB Research Centre in collaboration with Department of Pulmonology, King Edward Medical University/Mayo Hospital Lahore from january 2014 to December 2020. A pre-designed questionnaire was used to collect data from MDR Tb patients after verbal informed consent. Patients were followed to see the final outcome on completion of anti-tubercle treatment. Data was entered and analyzed by using SPSS. Results: Out of total 450 MDR TB patients analyzed in this study a higher proportion of 54.9% were males and 45.1% were females with an overall mean age of patients as 39.64±17.52 years. Most of 159(35.4%) patients had no skills and were labors whereas most of 145 (28.2%) females were house wives. Almost 71% of the patients successfully completed the treatment including 45% cured on the basis of availability of final smear and culture reports.. Conclusion: A high mortality rate of MDR TB patients was observed while most of the TB patients in this study belong to labor class while most of the women were housewives. Keywords: Tuberculosis, MDR TB, Occupation, Treatment outcome, loss to follow up.
La sociomaterialidad de la justicia: una ontología relacional para el Diseño legal
Authors: Santuber Joaquin , Krawietz Lina
Published: December 2021

El Diseño para el derecho y la justicia está mejor posicionado como una práctica postdisciplinaria y nómade. Este trabajo ofrece una ontología relacional para las prácticas y estudios de Diseño legal. A partir de marcos conceptuales de estudios de género, filosofía e investigación organizacional, damos cuenta de la sociomaterialidad de la justicia en los tribunales chilenos. Con ello, pretendemos superar las limitaciones al impacto de este tipo de estudios en la justicia, impuestas por su fijación disciplinaria en términos de metodologías y onto-epistemologías. En este sentido, entendemos la sociomaterialidad de la justicia como prácticas performativas, configuraciones de la agencia humana y no humana, acción situada y afectos, y aparatos y difracción. Para cada uno de ellos proporcionamos ejemplos de un estudio de caso en profundidad sobre los tribunales de justicia chilenos, el Departamento de Comunicaciones de la Corte Suprema y una clínica jurídica que trabaja con víctimas de abuso sexual. Nuestra contribución es doble. En primer lugar, nos basamos en literatura diversa para proponer un enfoque relacional del Diseño legal, basado en la sociomaterialidad. En segundo lugar, con el estudio de caso, avanzamos en la comprensión del surgimiento de prácticas locales en un tribunal y su materialidad. Junto con eso, destacamos las implicaciones para la práctica y los estudios de Diseño legal.
Design Thinking aplicado en lo público
Authors: Mogollón Angie
Published: December 2021

Aplicar el Diseño centrado en las personas con mayor frecuencia y constancia en el desarrollo de soluciones para los ciudadanos desde lo público podría facilitar el Diseño y la ejecución de los proyectos, así como aumentar el uso y el impacto de dichas soluciones para los ciudadanos.

En este artículo comparto mi experiencia profesional en Diseño e innovación a través de dos casos recientes de consultoría donde he aplicado los marcos teóricos del Design thinking, service Design y el jobs to be done, los cuales parten del principio de Diseñar por y para las personas.

A través de este escrito pretendo nutrir las reflexiones de quienes trabajan en el sector público, particularmente el latinoamericano, donde se recorre actualmente un camino para aplicar estos enfoques en el desarrollo de política pública, programas y proyectos.

Este artículo no es una investigación científica. Pretende, desde la praxis profesional, nutrir las reflexiones académicas del pensamiento de Diseño en lo público, y en especial, alimentar la puesta en práctica de este enfoque en el Estado.
Pemuridan dan Kepemimpinan sebuah Perspektif dari Pendidikan Kristen
Authors: Perangin Angin Yakub Hendrawan , Arifianto Yonatan Alex , Yeniretnowati Tri Astuti
Published: December 2021

Abstrak: Pemuridan sangat berkaitan erat dengan kepemimpinan. Pemuridan bagi kepemimpinan sangat bermakna karena sangat terbukti efektif guna mempersiapkan, menghasilkan dan membentuk pemimpin Kristen menuju serupa Yesus. Metode penelitian yang digunakan dalam penelitian ini adalah metode kualitatif dengan pendekatan studi pustaka. Langka awal adalah dengan mempelajari konsep pemuridan dan kepemimpinan Kristen. Langkah berikutnya adalah dengan melakukan analisis tentang dampak bahaya dan dampak positif adanya praktik pemuridan dalam kekristenan bagi kepemimpinan. Langkah terakhir adalah merumuskan makna dan implikasi pemuridan bagi kepemimpinan sebagai perspektif dalam menyusun pola pendidikan pemimpin Kristen. Hasil penelitian ini menyimpulkan bahwa implikasi yang harus dilakukan dan dijalani dalam kehidupan sebagai respon dari penelitian pemuridan dan kepemimpinan ini bagi pola pengajaran dan pendidikan kaderisasi kepemimpinan Kristen, adalah: Pertama, Menjadi pemimpin Kristen yang efektif. Kedua, Pemimpin yang mencetak para pemimpin. Ketiga, Pemimpin yang berani bayar harga. Keempat, Pemimpin yang hidup dalam komunitas pemuridan. Kelima, Mengimplementasikan iman yang dipercayai.Abstract: Discipleship is closely related to leadership. Discipleship for leadership is very meaningful because it has proven effective in preparing, producing and shaping Christian leaders to be like Jesus. The research method used in this study is a qualitative method with a literature study approach. The first step is to learn the concepts of discipleship and Christian leadership. The next step is to conduct an analysis of the harmful and positive impacts of the practice of discipleship in Christianity for leadership. The final step is to formulate the meaning and implications of discipleship for leadership as a perspective in formulating the pattern of Christian leader education. The results of this study conclude that the implications that must be carried out and lived in life as a response to this discipleship and leadership research for the pattern of teaching and cadre education for Christian leadership are: First, Become an effective Christian leader. Second, Leaders who print leaders. Third, leaders who dare to pay the price. Fourth, Leaders who live in a community of discipleship. Fifth, implement the faith that is believed.
Design Thermal Comfort in Greenhouses Environment
Authors: Omer Abdeen Mustafa
Published: December 2021

The move towards a de-carbonised world, driven partly by climate science and partly by the business opportunities it offers, will need the promotion of environmentally friendly alternatives, if an acceptable stabilisation level of atmospheric carbon dioxide is to be achieved. This requires the harnessing and use of natural resources that produce no air pollution or greenhouse gases and provides comfortable coexistence of human, livestock, and plants. This study reviews the energy-using technologies based on natural resources, which are available to and applicable in the farming industry. Among these are greenhouses, which are necessary for the growth of some plants (i.e., vegetables, flowers, etc.) in severe climates. However, greenhouses require some air conditioning process to control their temperature and relative humidity to suit specific plants. To achieve this, a novel air humidifier and/or dehumidifier systems using mop fans had been designed and employed in an experimental greenhouse to evaluate its performance under a controlled environment. This device helped to reduce the energy consumption of the greenhouse whilst providing a pleasant environment for the plants inside the greenhouse. The system was designed taking into account the meteorological conditions, which affect the environment inside the greenhouse. The performance of the system was monitored over a period of time by measuring the temperature and relative humidity of the greenhouse. Results of the monitoring have shown that the system was able to provide comfortable conditions (temperatures of 16- 26oC and relative humidity of 65%) suitable for the plants grown in the experimental greenhouse. It also enabled the minimisation of temperature variation and, hence, avoided the hazard of any sudden climatic change inside the greenhouse.
Humic Substances Potential Use
Authors: Oliveira Cleire Luciano
Published: December 2021

There are studies that demonstrate several benefits of humic substances in agriculture. Based on this, this mini review aimed to present the main effects of the use of humic substances on the soil and the plant. For this, bibliographical references were used with an approach to humic substances on a world scale. Overall, the review showed that the chemical, microbiological and physical properties of humic substances can ensure an increase in agricultural productivity as a result of the benefits it promotes for the physical and chemical structure of the soil, for root development and plant metabolism, generating benefits in increasing agricultural productivity.
Descuartizamiento de cuerpos: Mensajes criminales, ocultamiento, desaparición y tortura
Authors: Vásquez Guarín Catalina
Published: December 2021

El descuartizamiento de cuerpos es una práctica criminal que se ha convertido en un flagelo en múltiples ciudades del mundo como por ejemplo en Medellín, Colombia; viéndose inmersa en un contexto de crímenes atroces y delincuencia organizada que la utilizan con múltiples objetivos que al unirse llevan a tratos crueles e inhumanos, mensajes sanguinarios e infundir terror en la comunidad y en sus adversarios. Este escrito pretende mostrar la importancia de los hechos y los actores judiciales dentro de este fenómeno; tanto autoridades como peritos forenses, que al hacer parte del engranaje que tiene como premisa la resolución de un hecho criminal se basan en la experiencia propia o ajena sin desligarse de protocolos, leyes u otros documentos para obtener su objetivo principal: la búsqueda de justicia.
Consideraciones acerca de la cualificación en la mano de obra del inmigrante trabajador en Colombia
Authors: Mena-Cuesta Milena Paola , Torres de Arguelles Adriana
Published: December 2021

La presente investigación tiene como propósito interpretar el impacto del inmigrante trabajador en Colombia desde una perspectiva económica-laboral. Para ello, se consultaron algunos expertos en la temática. La metodología empleada consistió en un estudio bibliográfico con un enfoque cualitativo. Es imperativo señalar que el estudio se aborda desde un enfoque económicolaboral, al presumirse ser producto de efectos inducidos desde la dinámica de la geopolítica internacional. Sin embargo, aunque esta afirmación no constituye un elemento determinante de la investigación, se menciona como referente necesario para contextualizar lo que sucede en Colombia, dejando de lado, por supuesto, los intereses o sesgos políticos que circundan este problema social. Así como las consideraciones sobre el tema de la inmigración en general y los motivos de su desplazamiento, que proyectan a lo interno de Colombia una serie de desafíos que se reflejan en los ámbitos territorial y extraterritorial.
Perspectivas integradoras en Antropología Forense. Análisis de caso
Authors: Miceli José H. , Salceda Susana S. , Ríos Silvia , Lamenza Guillermo , Calandra Horacio A.
Published: December 2021

El presente trabajo tiene el propósito de ejemplificar, a través del análisis de un caso, la concurrencia de disciplinas antropológicas, y otras afines, en la interpretación de un hecho delictivo. La participación de especialistas vinculados para interpretar signos específicos relacionados con el culto y la “religiosidad popular” alertó, a través de la producción de información fehaciente, al sistema de justicia, y permitió encausar la investigación del hecho delictivo en el marco de una intrincada trama de interrelaciones entre personas con roles sociales diferenciados. En este caso el hecho está íntimamente relacionado con los actores sociales de una localidad del interior de laprovincia de Corrientes (Mercedes, Argentina). En Argentina este quehacer, con reconocimiento institucional, abarca actividades que involucran casos forenses aislados como el que en esta oportunidad se presenta, así como importantes crímenes de lesa humanidad vinculados a genocidios en masa en contextos de violencia social, espacio fundamentalmente ocupado por organizaciones no gubernamentales encargadas de la defensa de los derechos humanos.
Efectos del aislamiento preventivo obligatorio por causa del Coronavirus (Covid-19) en los contratos laborales en Colombia
Authors: Muñoz-Giraldo Juan Pablo
Published: December 2021

La pandemia de COVID-19 en Colombia y las medidas tomadas para combatir su propagación han creado una serie de dificultades e incertidumbres en los contratos laborales. Se aborda un análisis normativo sobre los efectos de estas medidas implementadas por el Gobierno de Colombia con respecto a la pandemia COVID-19 en los contratos laborales, así como los pronunciamientos realizados por el Ministerio de Trabajo en el país. Se evidencian varios mecanismos de protección del empleo propuestos por el Ministerio para preservar las relaciones laborales y mitigar la crisis.
Gevolgen van diepe hersenstimulatie van de voorste thalamuskern bij epilepsie
Authors: Rouhl Rob , Schaper Frédéric , Ackermans Linda , Vlooswijk Mariëlle , Van Kranen-Mastenbroek Vivianne , Wagner Louis , Colon Albert , Temel Yasin
Published: December 2021

Diepe hersenstimulatie is één van de mogelijke behandelingen voor patiënten met medicatie-resistente epilepsie en zorgt bij een aanzienlijk deel van deze patiënten voor vermindering van aanvallen. Er komen echter ook bijwerkingen voor. In deze bijdrage wordt een overzicht gegeven van de bijwerkingen en de betekenis van deze bijwerkingen in de klinische praktijk.
Multimodale beeldvorming voor effectieve epilepsiechirurgie
Authors: Colon Albert , Ossenblok Pauly , Van Klink Nicole , Leijten Frans
Published: December 2021

Wanneer een medicatieresistente patiënt wordt gezien als mogelijke kandidaat voor een operatie, wordt een reeks diagnostische onderzoeken ingezet. Over het algemeen is er al een MRI beschikbaar, evenals een routine-EEG. De eerste vervolgonderzoeken zullen een video-EEG aanvalsregistratie en een neuropsychologisch onderzoek zijn, soms gevolgd door een MEG-onderzoek, een PET, mogelijk een ictale SPECT en een simultaan EEG- en fMRI-onderzoek. Ook invasief onderzoek is voor een deel van de patiënten geïndiceerd. Op basis van deze onderzoeken kan er een operatiestrategie bepaald worden. Hiervoor is het niet alleen van belang dat er een duidelijke indicatieis van de locatie van het epileptogene hersengebied, maar ook van de relatie van dit gebied met omliggend hersenweefsel dat essentieel is voor functie. Dit gebied, bijvoorbeeld het motor- of taalgebied, kan onder andere in beeld gebracht worden met functioneel MRI (fMRI)-onderzoek.
Morphological Evaluation of Seabuckthorn (Hippophae rhamnoides L.) Populations Under Different Major Gene Pool Areas of Spiti Valley of Himachal Pradesh
Authors: Kairon Vinod , Sankhyan H. , Thakur Sanjeev , Sharma S.S. , Rana Neerja
Published: December 2021

Morphological evaluation in Seabuckthorn (Hippophae rhamnoides L.) was carried out among nine major gene pool areas and three growing conditions, within each major gene pool area of Spiti Valley of Himachal Pradesh. The performance of most morphological traits showed significant variations among different major gene pool areas as well as within different growing conditions. GPA-4 (Schilling) was superior than other major gene pool areas for plant and leaf morphological traits and GPA-3(Sheigo) for fruits parameters among different major gene pool areas. Over all, GC-3 (crop land) was found superior for all morphological traits among different growing conditions and in different major gene pool areas. It emerged from the present study that a large variability exists in the population of Hippophae rhamnoides growing under different growing conditions among different major gene pool areas in Spiti valley of Himachal Pradesh, particularly for morphological traits, which can be harnessed for improved genetic gain. The variability of different characters could be utilized for selection of genotypes suitable for the plantation and utilization in making different non wood forest products and also for utilizing ecological and economical gains in cold desert of Himachal Pradesh.
Taxonomic Discussion on Tree ferns of Great Nicobar Island, with a Note on Occurrence of Cyathea contaminans (Wall.) Copel. in India
Authors: Kholia Bhupendra , Sinha Bipin
Published: December 2021

In present communication, based on the detailed exploration, field observation and herbarium study, the Tree Ferns of Nicobar Islands are taxonomically discussed in detail. Only two endemic species, Cyathea albosetacea (Bedd.) Copel. and Cyathea nicobarica N.P. Balakr. & Dixit were known to occur in Nicobars Islands, but based on the detailed observation on type specimens and observation of live plants growing in type locality and other part of Nicobars both are found to be conspecific. Therefore, Cyathea nicobarica is merged here into Cyathea albosetacea. During present study, an additional south east asian tree fern Cyathea contaminans (Wall.) Copel. is found growing in Great Nicobar and reported here an addition to the Nicobar Island for the first time.
On Prime Ideals Related to an Ideal in a Commutative Ring
Authors: ÖNEŞ Ortaç
Published: December 2021

This article focuses on the notion of prime ideal related to an ideal of a commutative ring. Some of its characteristics are studied and the relations between ideals and prime ideals related to these ideals in a commutative ring are examined. Then some useful connections among them are obtained. Both similarities and differences between prime ideals related to an ideal and prime ideals are pointed out. Moreover a direct connection between prime ideals related to an ideal and radical ideals is obtained.
Student internship experiences during the Covid-19 pandemic
Authors: Garderen Maarten van , Van Leeuwen René
Published: December 2021

This paper reports about what nursing students from a Dutch Christian university experience in this corona period during their internship and how they cope with challenges that come on their way. The aim of this study is to explore insights in student experiences offering input for reflections for all those who are involved in guidance of (Christian) nursing students in stressful situations during internships. This qualitative study was conducted by online semi structured interviews. The data reveals an impact on a professional and personal level en gives insight in the way students cope with this impact. It becomes clear that the impact is significant. Giving personal care, one of the core values of nursing, is being impeded. In general students respond to these challenges with resilience. Support of fellow nurses and personal faith helps them to cope with the challenges they were confronted with.
Occurrence of hail storms and strategies to minimize its effect on crops
Authors: CHATTOPADHYAY N. , DEVI S. SUNITHA , JOHN GRACY , CHOUDHARI V. R.
Published: December 2021

Among the extreme weather events hailstorm in recent past caused significant crop damage across the country. In 2014 and 2015 unseasonal rains and hailstorms during March and April damaged rabi crops as well as horticultural crops extensively in many parts of the country. In this paper, a detailed analysis of occurrence of hailstorm in four homogenous regions of India during past 35 years from 1981 to 2015 has been made, to find out the climatological and favourable synoptic aspects associated with hailstorms so that timely issuing of warning and Agromet Advisories could minimize the crop damage/loss. Maximum hailstorms were observed to have occurred in Maharashtra (31 years) during the period of study with highest occurrence of 11 days during 24 February to 14 March, 2014. Also Maharashtra is more prone to hailstorms than other States in the country with maximum probability of occurrence         (91-95%) while the probability of occurrence (6-10%) is least in Gujarat, Chhattisgarh, Tamil Nadu, Tripura, Meghalaya, Sikkim and Nagaland. The significant synoptic situations associated with occurrence of hailstorms are found to be the north-south line of wind discontinuity causing convective activity and systems in westerlies. The information generated in this study was found to be very useful in minimizing crop loss through operational agromet services launched by the India Meteorological Department/Ministry of Earth Sciences in collaboration with the Agromet Field Units (AMFUs) located at State Agricultural Universities and institutes of ICAR and IITs under the project Gramin Krishi Mausam Sewa (GKMS).
Impact assessment of climate change on groundnut yield of middle Gujarat region
Authors: YADAV S. B. , PATEL H. R. , MISHRA S. K. , PARMAR P. K. , KARANDEY B. I. , PANDEY V.
Published: December 2021

The impact of projected climate change on groundnut (cv. Robut 33-1 and GG-2) yield have been studied for Anand station of middle Gujarat Agro-climatic region using PRECIS output of A2 scenario and base line data. Yield simulation study was performed by PNUTGRO (DSSAT v4.5) model. The field experiment data on groundnut cv. Robut 33-1 and GG-2 during the years 2008 to 2011 have been used to calibrate and validate the model. The weather condition as projected by A2 scenario (2070-2100) showed that there will be 13.7% higher rainfall as compared to base line (1961-90).  The mean maximum and minimum temperature will be higher to the tune of 3.6 and 5.1 °C as compared to their base temperature of 19.1 and 29.8 °C respectively. Nearly 21 and 31% pod yield reduction was noted in Robut 33-1 and GG-2 as compared to their base yield during projected period. Highest yield reduction was recorded in late sowing (15th July) and cv. GG-2 and lowest yield reduction was noted in timely sowing (D1) and cv. Robut 33-1. Under projected period. 7.0 to 16.0% yield benefited by adaptation strategies,  viz,  fifteen days earlier shifting of sowing with one pre sowing  irrigation and  Application of organic manure instead of chemical fertilizer.
PRECIS-model simulated changes in climatic parameters under various scenarios in different agro-climatic zones of Punjab
Authors: KAUR PRABHJYOT , KAUR NAVNEET , SINGH HARPREET
Published: December 2021

In this study,the future simulated climatic data (temperature and rainfall) for the 21st century were downscaled using the regional climate model, viz., PRECIS model (Providing Regional Climates for Impact Studies) for different agro-climatic zones, i.e., Zone II (Ballowal Saunkhri), Zone III (Ludhiana, Amritsar, Patiala and Jalandhar) and Zone V (Bathinda) of Punjab. The corrected simulated data were then analyzed on the annual and seasonal basis to quantify the changes in maximum and minimum temperature and rainfall. The study showed that the maximum and minimum temperature and rainfall by the end of 21st century are likely to increase by 2.0 to 2.2 °C, 3.3 to 5.4 °C and 33 to 66% respectively in agro-climatic zone II; by 0.4 to 5.8 °C, 2.5 to 7.4 °C and 3 to 62% respectively in agro-climatic zone III and by 0.5 to 4.0 °C, 4.7 to 7.7 °C and 58 to 69% respectively in agro-climatic zone V at different locations of Punjab state under various scenarios of climate change. The trend analysis of these parameters revealed there is positive linear increasing trend under different scenarios in the Punjab state.
Studying monthly rainfall over Dibrugarh, Assam: Use of SARIMA approach
Authors: HAZARIKA J. , PATHAK B. , PATOWARY A. N.
Published: December 2021

Perceptive the rainfall pattern is tough for the solution of several regional environmental issues of water resources management, with implications for agriculture, climate change, and natural calamity such as floods and droughts. Statistical computing, modeling and forecasting data are key instruments for studying these patterns. The study of time series analysis and forecasting has become a major tool in different applications in hydrology and environmental fields. Among the most effective approaches for analyzing time series data is the ARIMA (Autoregressive Integrated Moving Average) model introduced by Box and Jenkins. In this study, an attempt has been made to use Box-Jenkins methodology to build ARIMA model for monthly rainfall data taken from Dibrugarh for the period of 1980- 2014 with a total of 420 points.  We investigated and found that ARIMA (0, 0, 0) (0, 1, 1)12 model is suitable for the given data set. As such this model can be used to forecast the pattern of monthly rainfall for the upcoming years, which can help the decision makers to establish priorities in terms of agricultural, flood, water demand management etc.
Simulation of Thick Turbulent Boundary Layer Via Jet Array
Authors: Kornilov Vladimir , Boiko Andrey
Published: December 2021

Experimental studies directed to qualify the potential of simulation of an equilibrium (by Klauser) thick incompressible turbulent boundary layer on a flat plate of limited length with the help of an array of jets were carried out. It is shown that in the range of flow parameters and the mass flow rates of blowing under consideration the air jets through some rows of the holes with different diameter increase substantially the thickness of turbulent boundary layer within a comparatively small distance of the blowing region. In most cases studied, the mean and fluctuating characteristics of the boundary layer reach values specific for naturally developed turbulent boundary layer at downstream distances of about 22 thickness of regular boundary layer. Mean velocity profiles in the logarithmic part of the artificially thickened boundary layer are described by the law-of-the-wall variables with a good accuracy and generalized by a single dependence with the help of empiric velocity scale for the outer region. Disturbance characteristics of the flow are also close to those in the canonic boundary layer. However, as the blowing intensity grows, a systematic deviation of the disturbance streamwise velocity from the canonic values is observed, which indicates the limitation of the present approach and points out the need of further refinement of the method of simulation under consideration
Dilatometric Investigation of the Phase Transformations in ChS-139 Steel
Authors: Kozlovskii Yuriy , Stankus Sergey , Khairulin Rashid , Yatsuk Oleg
Published: December 2021

The results of the dilatometric investigation of the phase transformations in ChS-139 steel over the temperature range from 20 to 1 000С are presented. The error in the coefficient of linear thermal expansion (TCLE) is (1.5–2)  10–7 К–1. The temperatures of the phase transformations, the changes of relative expansion on mutual austenite-martensite transitions, and TCLE of all phases are determined. An interpretation of a number of specific points in the temperature dependences of the properties is given
Thermal Diffusivity of 16Kh12V2FTaR Steel in a Wide Temperature Range
Authors: Agazhanov Alibek , Savchenko Igor , Samoshkin Dmitriy , Stankus Sergey , Dutova Olga
Published: December 2021

Thermal diffusivity of the ferritic-martensitic steel 16Kh12V2FTaR in the temperature range from 296 to 1274 K has been measured by the laser flash method with the error of 2–4 %. The approximating equations have been obtained, the Curie point of steel and the temperatures of martensitic-austenite phase transitions have been determined
Dependence of Gas Bubble Diameter from the Gas Flow Rate in Upward Two-Phase Flow in an Inclined Flat Channel
Authors: Gorelikova Anastasia , Kashinsky Oleg , Randin Vyacheslav , Chinak Aleksandr
Published: December 2021

Experimental study of heat transfer and wall shear stress in an upward bubbly flow in an inclined flat channel is presented. The measurements were performed in the range of superficial liquid velocities 0.31.1 m/s and different values of volumetric gas flow rate ratio. Measurements of hydrodynamic structure were carried out by electrochemical method using a miniature sensors of friction. The values of average friction and heat transfer coefficient at different orientations of the channel were determined. It is shown that there is a significant dependence of friction and heat transfer on the channel inclination angle in the gas-liquid flow
Formation of Two-Dimensional Islands on Si(111) Surface During Homoepitaxial Growth
Authors: Rogilo Dmitriy , Fedina Ludmila , Kosolobov Sergey , Latyshev Aleksandr
Published: December 2021

The nucleation of two-dimensional Si islands has been studied by in situ ultrahigh vacuum reflection electron microscopy on extra-large (~ 10–100 μm) atomically flat terraces of Si(111) surface. The dependence of two-dimensional island concentration N2D on substrate temperature T and silicon deposition rate R is found to obey relation N2D ן Rχ exp(E2D/kT) with χ≈0.58 or 0.82 and E2D ≈ 1.77 eV or 1.02 eV on the Si(111) surface with (7×7) or (1×1) structure, respectively. The critical nucleus during the growth on the extra-large terraces is found to consist of i = 1 particle at T ~ 700°С, and the critical nucleus size increases to i = 7–10 on terraces with smaller width, which is caused by the competition between the 2D island nucleation and the interaction of adatoms with steps bordering the critical terrace
Young’s Experiment on Slits with an Angle Between Them
Authors: Bogomyagkov Anton , Dorokhov Viktor , Meshkov Oleg , Polygalov Aleksandr , Shcheglov Alexey
Published: December 2021

Here are proposed a modified version of Young’s experiment on slits with an arbitrary angle between them. Also here performed mathematical analysis of the proposed scheme, showing that the intensity distribution can be approximated by a hyperbolic function. Experimental data confirm theoretical calculations. Analysis of the experimental results has conducted using two different methods of processing the digital data of the interference pattern. Theoretical calculations and experimental results established a nontrivial fact, that the interference patterns for slits with different, but symmetrical respect to 90° angles have the same intensity distribution. This experiment may be used as a standard laboratory work in University on optics workshop
Investigation of Methyl Pentanoate Flame Structure by Molecular-Beam Mass Spectrometry and Modeling
Authors: Gerasimov Iliya , Knyazkov Denis , Shmakov Andrey , Korobeinichev Oleg , Hansen Nils , Westbrook Charles
Published: December 2021

The structure of four stoichiometric and fuel-rich premixed flames of methyl pentanoate stabilized at low (20 torr) and atmospheric pressures has been studied by molecular-beam mass spectrometry. The data obtained have been compared with results of numerical simulations, performed with implication of two detailed chemical kinetic mechanisms, one of which has been developed by the authors of this work. While both mechanisms have predicted concentration profiles for most of the species quite well, some discrepancies between experimental and modeling data have been observed for carbon monoxide and some intermediate products. Considerable differences in several profiles simulated with different mechanisms have been noted. Analysis of reaction paths in investigated flames has shown most of these differences to be caused by different reactions and kinetics used for isomerization of primary radicals of methyl pentanoate oxidation in these mechanisms
Calculation of Physical and Chemical Transformations in Methane – Iron Particles Mixture
Authors: Fedorov Aleksandr , Shulgin Aleksey , Tropin Dmitriy
Published: December 2021

The refined model of ignition methane – air and reactive iron particle mixture that takes into account the kinetics of particles oxide film growth is developed. Comparison of the ignition delay times in methane-air-particles mixture obtained in the calculation of the proposed model with experimental data showed their satisfactory agreement in the range of temperatures 900–1200 K and pressures 1–1.2 MPa. At low exposure temperatures the new model describes the ignition delay time more accurately than our model constructed earlier
The Features Of The Film Flow Of Liquid Nitrogen Over The Structured Surfaces
Authors: Pavlenko Aleksandr , Volodin Oleg , Serdyukov Vladimir
Published: December 2021

Experimental results on hydrodynamics of cryogenic liquid film flow over the surface of the single elements of the structured packing are presented. Based on the comparison of experimental data, the effect of microtexture and perforation on the zones of liquid film spreading over a corrugated surface is shown for different values of the film Reynolds number. The results of experiments on dependence of a relative portion of liquid held in a single irrigated channel of the corrugated plates with different thicknesses on irrigation degree are presented. It is shown that microtexture, its direction relative to the gravity has a significant effect on redistribution of the local flow rate of liquid flowing over the surface with complex geometry
Modern Status Of Researches Of Nanofluids Viscosity
Authors: Rudyak Valeriy
Published: December 2021

In present paper the regular review of researches of nanofluids viscosity is made. Known experimental data and data of molecular dynamic simulation are considered. It is shown, that nanofluid viscosity is not described by the classical theories. All experimental data and molecular dynamics simulations suggest that at a fixed volume concentration of nanoparticles, the nanofluid viscosity is significantly higher than the viscosity of conventional suspensions. Generally it depends not only on concentration наночастиц, but also from their size. The viscosity coefficients increase with decreasing nanoparticle size. It was shown by molecular dynamics method that the viscosity coefficient of nanofluid depends on the nanoparticles material. At low and moderate concentrations of nanoparticles, the relative viscosity coefficient does not change with increasing temperature. In this case the temperature dependence of nanofluid viscosity is determined by the corresponding dependence of based fluid. The nanofluid prepared on distilled water with CuO nanoparticles has the nonNewtonian rheology if the concentration of the particles is more than 0.25 in the volume. It was established that their rheology is well described by the power law fluid model. With an increase in concentration of nanoparticles, nanofluid index decreases, but the consistency parameter K, on the contrary, increases. The correlation defining dependence of the viscosity coefficient on nanoparticles concentration and their size is offered. The reasons of nonclassical behavior of nanofluids are in detail discussed.
Different Conditions Of The Round Hydrogen Jets Diffusion Combustion In Air
Authors: Shmakov Andrey , Grek Genrich , Kozlov Viktor , Korobeinichev Oleg , Litvinenko Yuriy
Published: December 2021

The purpose of this work is experimental study of diffusion combustion of the round hydrogen microjets with different nozzle diameter. The new phenomenon is revealed during combustion of a hydrogen microjet, which we have named «bottleneck». The special attention has been given to research of characteristics of the «bottleneck» development and its role during of a hydrogen round microjet combustion. It is shown, that «bottleneck» represents the closed spherical area of the hydrogen with air mixture combustion in a jet near-field. The «bottleneck» area is closed by a powerful density gradient. It is found, that the laminar hydrogen jet in this area overcomes a density gradient of gas, becomes turbulent and combustion process is accompanied both a turbulent jet, and a turbulent flame further downstream evolution. It is shown, that the spatial size of a «bottleneck» decreases with growth of a jet velocity.
The Combined Influence Of Heat And Mass Transfer Through A Porous Wall On The Boundary Layer Stability Compressible Gas At High Mach Numbers
Authors: Gaponov Sergey , Terekhova Natalya
Published: December 2021

This work continues the research on modeling the management regime in the boundary layer of compressible gas. The effect of the distribution of heat and mass transfer on the stability characteristics of supersonic boundary layer at high supersonic Mach number M = 5,35. The focus is on the modeling of acoustic disturbances in the conditions as a normal injection, in which the only nonzero component of the average velocity V, and the injection of other areas, including tangential, when the wall is not zero only U component. Production close to the problem of influence on the development of gas curtain small oscillations. It is assumed that the effect of injection of a homogeneous gas of different temperature similar to that of the blowing gas of different density, namely, blowing cold gas simulates heavy gas blowing and vice versa. Therefore in this modeling work is achieved by changing the factor of temperature (heating or cooling of the walls). The variant when the socalled regime implemented «lock» when the velocity perturbations on the porous surface can be taken as zero.
Flat-Plate Skin Friction Under The Conditions Of Air Blowing Through A Wall With Intermittent In Length Permeability
Authors: Kornilov Vladimir , Boiko Andrey , Kavun Ivan
Published: December 2021

Possibility of turbulent skin-friction reduction in an incompressible boundary layer of a flat plate with air blowing through a microperforated surface consisting of alternating permeable and impermeable sections was studied experimentally and computationally. The mass flow rate of the air per unit area was varied in the range from 0 to 0.0709 kg/s/m2 , which corresponds to the maximum blowing coefficient equal to 0.00344. A consistent reduction of the local skin-friction values along the chord of the microperforated insert was found, the reduction achieving nearly 70 % at the end of the last active blowing sections, except the impermeable surface sections demonstrating, on the contrary, the skin friction increase: the longer section, the higher skin friction.
Experimental Study Structure Of Gas-Liquid Flow In Rectangular Minichannel By Optical Methods
Authors: Kozulin Igor , Kuznetsov Vladimir
Published: December 2021

In this paper, using method of two-beam laser scanning and high-speed video was identified patterns of distribution phases in the cross-section of the rectangular channel 0.72 × 1.50 mm with hydraulic diameter of the order to capillary constant. The structure of the gas-liquid flow was studied including flow regimes and statistical characteristics of the two-phase flow in regime with elongated bubbles, transition flow and annular flow regime.
An Electro-Jet Rocket Engine With Big Thrust At Helical Corrugated Magnetic Field
Authors: Arzhannikov Andrey , Beklemishev Alexey
Published: December 2021

A fundamentally new electro-jet rocket engine having a big thrust with a high specific impulse is described in this paper. The acceleration mechanism of magnetized plasma along the axis of a cylindrical chamber with a helical corrugated magnetic field is put in the basis of such engine. The plasma acceleration is achieved during its drift motion by applying a radial electric field. The analytical description of the plasma motion process gives a visual representation of how the diamagnetic forces provide the process of the continuous acceleration of plasma ions along the axis of the helical corrugated magnetic field. As the result of this process, the accelerated plasma stream flows through the expanding cross section of a magnetic nozzle and the thrust of the rocket engine is created. Estimated calculations showed the ability of the new electro-jet rocket engine to achieve the big trust (in the range 102 –104 Newton) with the high specific impulse (from the level 3·104 to 103 seconds, respectively) at a reasonable efficiency. This set of parameters is fundamentally unattainable for another jet engines operating on the basis of other physical mechanisms.