bluuebunny/crossref_metadata_2025_split huggingface dataset:
Um modelo simplificado para análise de desempenho de um refrigerador evaporativo de cerâmica
Authors: Barros Marcelo Paes de 
Published: January 2021

<p>O refrigerador cerâmico tem como princípio o resfriamento evaporativo, uma técnica conhecida desde a antiguidade, usada para manter baixa a temperatura dentro de um compartimento interno de armazenamento de produtos alimentares perecíveis, como frutas e legumes, em áreas rurais, quentes e secas, de países em desenvolvimento. Neste artigo, um modelo matemático simplificado é desenvolvido, baseado nas transferências de calor e de massa entre o ambiente e o refrigerador, para a predição da temperatura no interior de um refrigerador cerâmico, do tipo <em>pot-in-pot cooler</em>. Os resultados da análise apresentam uma comparação das temperaturas previstas com as temperaturas experimentais para o mesmo refrigerador e uma estimativa da temperatura do refrigerador sob uma variedade de temperaturas e umidades ambientes. Os resultados previstos mostraram a validade do modelo matemático simples e que o refrigerador cerâmico pode ser bem aplicado em condições climáticas quentes e secas do território brasileiro. </p><p><strong></strong><strong>Palavras chave</strong>: Resfriamento evaporativo, transferência de calor e massa, condução, convecção, modelagem.</p>
The Effect of Liquid Organic Fertilizer (LOF) Made from Rabbit Urine and NPK Fertilizer on the Growth of Bok Choy (Brassica rapa L. Subsp. chinensis)
Authors: Kurnianta Legita Dwi , Sedijani Prapti , Raksun Ahmad 
Published: January 2021

Fertilizer is one of the most important needs for plants. Fertilizing can be done by using inorganic fertilizers or organic fertilizers. Long term fertilizing by using inorganic fertilizers without adding the organic matter could potentially reduce soil fertility and lead to not optimal growth of the plant. This study aims to determine the effect of liquid organic fertilizer (LOF) made from rabbit urine, NPK fertilizer, and the combination of both fertilizers on the growth of bok choy, and to determine the best fertilizer dosage for the growth of bok choy. This study uses a Completely Randomized Design consisting of 2 factors, the dose of rabbit urine LOF and dose of NPK fertilizer; 4 dosage levels each in triplicates. Data was analyzed using ANOVA followed by DMRT Test. The results indicates that the application of LOF made from rabbit urine, NPK fertilizer, and the combination of both fertilizers increasesÃÂ plant height, leaves number, leaf area, wet weight, dry weight, and chlorophyll total of bok choy. DMRT (a 5%) test shows the best dosage applied for enhancing growth parameter are 6 ml of LOF plus 0,4 gram of NPK for plant height, wet weight, and dry weight, the 4 ml of LOF plus 0,6 gram of NPK for leaves number and leaf area, and the 4 ml of LOF plus 0,4 gram NPK for chlorophyll total.
Identifying Fracture-Filling Material in Oil-Based Mud with Dielectric Borehole Imaging
Authors:   Schlumberger, Schlicht Peter , Zhang Tianhua ,   Schlumberger, Lüling Martin G. ,   Schlumberger, Graham Brita Renee ,   Equinor, Cournot Alexandra ,   Equinor, Sadownyk Rob ,   Valeura Energy Inc
Published: January 2021

Natural fractures maintain a significant role in many hydrocarbon plays, in both conventional and unconventional reservoirs. In exploration and development scenarios, specific fracture properties, such as orientation and density, are important. However, more critical is their internal architecture: are the fractures open to fluid flow or filled with minerals? Borehole microresistivity imaging tools are widely used to determine these fracture characteristics. In wells drilled with water-based muds, open fractures are filled with conductive borehole fluid that enables distinguishing open, water-filled fractures from resistive, mineral-filled fractures and the surrounding rock. However, many wells today are drilled with oil-based muds. In this case, mineral-filled fractures and oil-based-mud-filled fractures are equally highly resistive and cannot be directly distinguished using resistivity images only.	The latest-generation wireline oil-based-mud microresistivity imagers operate in the megahertz frequency range, radiating the electrical current capacitively through the nonconductive mud column and delivering photorealistic borehole images. Both electrical conductivity and dielectric permittivity components constitute the measured signal, from which button standoff, formation resistivity, and dielectric permittivity are inverted.	Our example case shows highly resistive, high-angle fractures from the resistivity images with their orientation and density. The standoff image determines if the mud column penetrates the fracture plane, showing an apparently high standoff compared with the surrounding rock. If the standoff appears high in the fracture plane, the fracture is classified as open to fluid flow. However, are these fractures indeed fully dilated and open, or are they filled with different materials—are they partially mineralized with calcite and partially open, filled with mud?	To further determine the fracture fill and susceptibility to fluid flow, a new workflow employs the material dependency of the relative dielectric permittivity. The relative permittivity is estimated as a function of resistivity and frequency pixel by pixel on the resistivity image. The estimate formula is based on several hundred laboratory measurements on core plugs with different fluid saturations and salinities. The resulting borehole image enables distinguishing materials in the volume of investigation, where low values correspond to mud-dominated oil in open fracture planes, medium values correspond to rock-forming minerals, and high values are attributed to shales and other clay-rich rocks. Fracture planes filled with patches of both low- and medium-permittivity values are classified as partially open.
Innovative Formation Tester Sampling Procedures for Carbon Dioxide and Other Reactive Components
Authors:   Petrobras, Piazza Ralph , Vieira Alexandre ,   Petrobras, Sacorague Luiz Alexandre ,   Petrobras, Jones Christopher ,   Halliburton, Dai Bin ,   Halliburton, Pearl Megan ,   Halliburton, Aguiar Helen ,   Halliburton
Published: January 2021

Three questions must be answered to optimize any openhole sampling program. These questions are where to sample, when to sample, and how to sample. Samples must be acquired from the right locations in order to answer the critical questions posed by the asset evaluation and production teams. Samples must be obtained at the right time to minimize contamination while using valuable rig time efficiently. Samples must be taken in a manner that provides the laboratory with the most representative analysis of the subsurface reservoir fluid.	Carbon dioxide is a corrosive acidic gas component often found in petroleum reservoirs. Special and relatively costly completion and production equipment is required to produce reservoir fluids containing carbon dioxide. Carbon dioxide must be scrubbed from petroleum before that petroleum is shipped. Carbon dioxide may cause flow assurance issues with regards to scale of inorganic and organic components, thereby requiring costly mitigation. An accurate estimate of carbon dioxide concentration in the reservoir fluid is required to make an accurate determination of the cost of CO2 remediation.	New formation tester carbon dioxide analysis technology has allowed detailed examination of these questions due to a previously unobserved phenomenon with respect to formation tester sampling and carbon dioxide. Specifically, carbon dioxide may bind with caustic components of drilling-fluid filtrate in either a reversible manner or be consumed by caustic components in an irreversible manner. Observation of a reversible reaction has been used to validate the phenomena but also provides a cautionary warning that for different chemical reactions in which carbon dioxide may be consumed, openhole samples may significantly underestimate the amount of carbon dioxide in the reservoir fluid. New sampling procedures applicable to existing formation testing infrastructure mitigate this sampling issue by determining the correct carbon dioxide content in the reservoir fluid. The new sampling procedures are validated with the carbon dioxide monitoring technology but are not strictly dependent on it. In addition, the proposed sampling procedures are applicable to the measurement of all reactive petroleum components, such as hydrogen sulfide.
Tutorial: Maximizing Value From Mudlogs–Integrated Approach to Determine Net Pay
Authors:   Chevron, Malik Mayank , Hanson Scott A. ,   Chevron, Clinch Simon ,   Chevron
Published: January 2021

In the current business environment, operators are increasingly striving to reduce logging expenses when possible while maintaining safety of the drilling operations. Mudlogging has been remarkably successful through the oil industry downturn due to the value of information derived from the analysis as well as the relatively low cost. Information about the lithology and fluid content of the borehole during drilling is important for drilling optimization and qualitative petrophysical assessment.	This tutorial takes mudlogs a step further to quantify net pay and estimate reserves in low-permeability reservoirs where traditional log analysis is challenging. Methods will be described for estimating gas-in-mud based on characterized gas measurement systems and obtaining bulk volume of gas per volume of rock drilled. Corrections are discussed for mud gas systems based on their mechanical operating parameters of mud flow into the gas extractor, gas sample suction rate out of the gas extractor, recirculated gas, and estimated gas extraction efficiencies. Applying these corrections yields normalized bulk gas volume and gas-oil ratio (GOR), which is calibrated with the petrophysical assessment from wireline logs and PVT samples. Finally, correlations between bulk hydrocarbon volume and permeability are used to estimate volumetrics.	Case studies presented show that the calibrated mudlogs can be used for quantitative assessment of bulk volume of hydrocarbons in high-angle/horizontal wells where conveying wireline logs might be challenging. Pay flags computed from the mudlog interpretation can be used to guide completion decisions. Additionally, GOR estimates derived from mudlogs can be used for fluid typing and optimizing the fluid sampling program in deepwater development wells. Results presented clearly show that mudlogs can provide continuous, real-time, and quantitative petrophysical assessments.
Agents of May Fourth. Jing Yinyu, Xu Zhongnian, and the Early Introduction of Modern Chinese Literature in France
Authors: Magagnin Paolo 
Published: January 2021

Jing Yinyu (1901-1931?) and Xu Zhongnian (1904-1981) played a pivotal role in the dissemination of modern Chinese literature in France at the turn of the 1930s. Best known as Lu Xun’s first translator into a Western language and a friend of Romain Rolland’s, Jing compiled the Anthologie des conteurs chinois modernes in 1929. In his Anthologie de la littérature chinoise. Des origines à nos jours, published in 1932, Xu also devoted a section to recent literary developments. By analyzing the nature of the two projects, the translated corpora, and their paratexts, I will describe the features of Jing’s and Xu’s dissemination of May Fourth literature in France and scrutinize their artistic and ideological stance vis-à-vis the new literary scene. Ultimately, I will attempt to pinpoint in what terms the two scholars-cum-translators’ agency contributed to foreign readers’ awareness of the cultural, social and political experience of the May Fourth Movement.
Features of recreational athleticism with students of higher education institutions
Authors: Krylov A. G. , Martynov Yu. A. 
Published: January 2021

The article reveals the features of recreational athleticism with students of higher educational institutions. The concept of "athleticism" is revealed. It has been proven that it is athleticism that is the most popular sport among college students. The article reveals the influence of athleticism on the level of physical fitness of students of higher educational institutions in the process of physical education classes. The analysis of literary sources showed a tendency towards a constant deterioration in the state of health of young people, a decrease in motivation for physical education classes. Therefore, the issue of introducing recreational classes with athleticism as the need to improve the means of physical education, taking into account gender and age, individual characteristics, needs, motives and interests of students, is urgent.
The most acute problem facing high school today is the serious deterioration of the health of student youth. This is especially true for freshmen due to their lack of experience in adapting to the new socio-economic and psychological-pedagogical status of the student. In addition, in the context of quarantine and distance learning, the issue of youth health is quite relevant.
In today's conditions of education, the system of physical education in higher education institutions does not solve its main and important task - maintaining the health and physical fitness of students at the appropriate level. It does not take into account the interests and needs of students, does not contribute to sustainable motivation for physical activity, the formation of physical culture of the student's personality.
Organizational system blind golf
Authors: Pavlyuk I. 
Published: January 2021

The article provides a retrospective analysis of the emergence, formation and development of blind golf.
The chronology of the emergence of the first organizational and managerial structure of golf for the blind at the international level and at the level of individual states, their further reorganization and development is investigated. The classification of athletes-golfers with visual impairments and the international handicap calculation system are considered, which guarantees the same calculation of handicaps in all countries. The work of the member countries of the International Blind Golf Association, which today uses a single, rapidly growing database of players, coaches and volunteers. The competition system was analyzed and it was determined that six or seven national open championships are held annually, and The IBGA World Blind Golf Championships take place every two years. It is summarized that the conducted historical analysis of the development of golf for people with visual impairments suggests that the main trend of its development is the growth of its popularity and a significant increase in the geography of distribution, the formation of national organizational structures and golf management structures for the visually impaired at the international level. The organizational and management systems of golf for the visually impaired are represented by a training system, as well as a competition system, within which sports and recreational areas are combined.
Improvement of theoretical preparedness qualified athletes in weightlifting by using information search methods
Authors: Pityn M. , Kharchenko-Baranetska L. , Hlukhova H. , Hnatchuk Y. , Edelev O. 
Published: January 2021

Theoretical knowledge which obtained at different stages of long-term training belongs to the system of athletes’ values. Its form the prerequisites for successful formation and maintenance of the sportsmanship level and harmonious development of personality.
The purpose of the study: to determine the effectiveness of information search methods use in improving the theoretical training of qualified athletes in weightlifting.
Research methods: theoretical analysis and generalization, documentary method, sociological methods (questionnaire), pedagogical experiment, methods of mathematical statistics.
The athletes at the stages of preparation for higher achievements and maximum realization of individual opportunities in weightlifting (13 athletes had the qualification Master of Sports of Ukraine and 6 – Candidate of Master of Sports of Ukraine) were involved in the formative pedagogical experiment. A feature of the proposed pedagogical experiment was the use of two experimental programs to improve the athletes’ theoretical preparedness. Common features for them were the use of information search methods and self-education. For the athletes of the first experimental group, the task was to conduct an information search with the involvement of the source base of the library LSUofPhC. Participants of the second experimental group had the opportunity to increase the level of preparedness by working at LSUofPhC computer class with access to databases on the Internet.
Results. Intragroup increments of athletes’ theoretical preparedness (14.86−64.00%) on the main information blocks and topics indicated the effectiveness of methods of information search and self-education of theoretical training in weightlifting at the stages of preparation for higher achievements and maximum realization of individual opportunities. There were no differences (0.69−2.38% of correct problem solving at p> 0.05) between athletes who conducted an information search using the source database of the LSUofPhC library and those who used access to Internet databases.
Methodology of hygienic assessment of the fulfillment of hygienic rules of sleep hygiene by athletes under conditions of high physical activity
Authors: Tsyhanenko O.I. , Pershehuba Ya.V. , Sklyarova N.A. , Oksamytna L.F. 
Published: January 2021

Violation of the hygienic rules of sleep hygiene can negatively affect the physical and mental performance of athletes. This gives grounds to consider the issue of assessing the degree of fulfillment of these rules by athletes under conditions of high physical exertion. Objective of the study: to develop methodological approaches to assessing the fulfillment of hygienic rules of sleep hygiene by athletes under conditions of high physical exertion. Research methods: theoretical analysis of scientific literature: generalization, synthesis, formalization, abstraction. Research results and conclusions: on the basis of the system analysis of scientific, scientific and methodological literature and other sources of information, a test questionnaire was developed to assess the degree of fulfillment of hygienic rules of sleep hygiene by athletes under conditions of high physical activity.
It is concluded that the developed test-questionnaire of the survey to assess the degree of fulfillment of hygienic rules of sleep hygiene by athletes can be used in the future in practice to determine the degree of fulfillment of hygienic rules of sleep hygiene by athletes under conditions of high physical activity.
Carrying out specialties of aqua aerobics lessons and its varieties
Authors: Yachnyk Maksym , Zendyk Olena , Iachniuk Iurii , Iachniuk Iryna 
Published: January 2021

The modern problems solution, impairment population’s health, through involvement of its wide miles in active leisure and improvement is closely connected both with development of improving recreation. This is due to the expansion of the content of health and recreational activities, rethinking the role of its individual types and areas of health fitness programs.
The article considers the increasing role of aquatic types of physical culture and sports and the role of aqua aerobics, as one of the types of recreational and health technologies, and their impact on the female body. Aqua aerobics it is a complex of physical exercises in water with elements of swimming, gymnastics, stretching and strength exercises. Aqua aerobics has a healing effect on the whole body. It promotes good posture, removes tension in osteochondrosis, has a positive effect on the cardiovascular system, normalizes blood pressure, strengthens the skeleton total muscles, increases the body's defenses, removes stress, nervous excitability, improves psycho-emotional state, burns calories well which leads to weight loss. Aqua aerobics improves strength, endurance, flexibility and agility, as well as improve the functional state of the body. Water training gives a feeling of lightness and muscle relaxation. Water is a wonderful natural masseur. Exercises in water improve the condition of the skin and blood circulation. It is recommended to do different types of aqua fitness in swimming pools under the guidance of a trainer-instructor. Only in this case, exercise will be most beneficial to health.
THE CONTENT OF PSYCHOPHYSICAL READINESS OF FUTURE FITNESS TRAINERS
Authors:   Бердянський державний педагогічний університет, MAYVALDOVA O. 
Published: January 2021

The author conducted a professional analysis of the profession “fitness trainer”, summarized the data of scientific and methodological literature on the requirements of employers to specialists in this field, taking into account the main results of training professional competencies of educational and professional program “Physical Culture and Sports. Fitness” of Berdyansk State Pedagogical University in the specialty: “017 Physical culture and sports. Fitness Trainer”, which allowed to determine the professional profile of the profession “Fitness Trainer”. The method of comparison and comparison specified the ability and quality of psychophysical readiness of the future fitness trainer for the successful implementation of their professional activities. In this paper, a thorough analysis of the scientific and methodological literature on the definition and characterization of the dominant activities of the profession “fitness trainer”; the necessary psychomotor, artistic, technical, scientific, organizational and pedagogical, moral and volitional abilities and general civil, psychophysical, professionally important personal qualities of specialists of this profession are systematized and arranged. The purpose of the article was to compile a professional profile, ie to summarize the basic trends in education and development of the necessary civic, psychophysical, personal and professionally important qualities of specialists in this profession.	Revising the content of training a future fitness trainer in higher education, expanding their special professional qualities and professional competencies will allow the future fitness trainer to achieve psychophysical readiness and can solve a variety of tasks such as: the formation of new qualities in the human psyche; mastering new professionally important knowledge, skills and abilities that take into account the conditions of professional training, the purpose and content of professional activity; provide an opportunity to effectively carry out not only future professional activities, but also optimal life. According to the author, this will improve the quality of professional training of the future fitness trainer, make him competitive in the market of fitness services and effectively solve the problem of improving the health of the population of Ukraine.	Key words: psychophysical readiness, professiogram, types of activity, abilities, personal qualities, fitness trainer.