bluuebunny/crossref_metadata_2025 huggingface dataset:
Praktyki ramowania i przeramowania w dyskursie medialnym dotyczącym Okrągłego Stołu
Authors: Kotras Marcin
Published: March 2022

Po ponad 25 latach od początku transformacji warto zastanowić się nad obecnymi podziałami socjopolitycznymi w polskim społeczeństwie. W tekście zaprezentowane zostaną wyniki badań dotyczące praktyk ramowania w przypadku Okrągłego Stołu i transformacji w polskich tygodnikach opinii. Ich dziennikarze, mimo zmiany formuły działania mediów, wciąż mogą być traktowani jako reprezentanci elit symbolicznych. Organizują oni dyskurs polityczny, definiując „prawidłowe” sposoby postrzegania i interpretowania rzeczywistości. W warunkach zerwanej przekładalności perspektyw na dynamikę dyskursu wpływają spory, które można uznać za kontrowersje, rozumiane za Markiem Czyżewskim jako dotyczące zarówno poziomu komunikacyjnego, jak i metakomunikacyjnego (definicja problemu, przypisywanie motywów działania drugiej stronie sporu). Przedmiotem toczonych sporów stają się wspólnotowa symbolika i wartości, na których skoncentrowane są strategie argumentacyjne przyjmowane w tygodnikach. Używając pojęć Jeffreya Alexandra, strony zaangażowane w dyskurs przypisują sobie kod demokratyczny, a swym adwersarzom niedemokratyczny. Celem artykułu jest identyfikacja i opis praktyk ramowania i przeramowania Okrągłego Stołu jako wydarzenia inicjującego zmiany transformacyjne. W tekście znajdują się również uwagi dotyczące wspólnot interpretacyjnych w debacie publicznej.
The relevance of authenticity to clinical distress: Reaffirming the role of self-alienation
Authors: Naumova Katerina , Naumov Florijan
Published: March 2022

Several counselling psychology perspectives have argued that authenticity should be the primary goal of treatment, while defining alienation from the self as the root cause of distress and psychopathological suffering. Recent findings have provided evidence that the tripartite model of dispositional authenticity based on Rogers’ person-centered theory can predict mental well-being. Considering the lack of research in clinical samples, this study examined the unique predictive utility of trait authenticity for distress in outpatients seeking counselling (N = 105, 58% female; age range: 18-65) and demographically matched controls (N = 102, 62% female; age range: 18-52 years). Most of the outpatients were diagnosed with anxiety and/or mood disorders, while the controls were screened for utilization of mental health services. Results revealed higher self-alienation and acceptance of external influence in the clinical sample, as well as higher neuroticism and symptomatic and overall distress relative to controls. Only self-alienation was able to account for unique variance in clinical distress in outpatients, above and beyond neuroticism, reaffirming the assumption that the greater the discrepancy between actual experiences and their symbolization, the greater the risk of psychological dysfunction. The findings further revealed a differentiated role of self-alienation relative to the severity of experienced distress and a need to examine causal links with neuroticism. Implications regarding clinical practice and the measurement of authenticity as treatment outcome are discussed.
IMPLEMENTASI MODEL BLENDED LEARNING DENGAN MEDIA WHATSAPP PADA SISWA KELAS IV MI TARBIYATUS SHIBYAN
Authors: Zahratun Naemah  , Andi  Prastowo
Published: March 2022

Blended Learning is a learning model that combines two different learning models, namely face-to-face learning with learning using technology (online or offline). The learning model was made one of the alternative avenues applied at MI Tarbiyatus Shibyan during the Covid-19 era to provide opportunities for students to learn through technology-based learning without leaving face-to-face learning, considering that continuous learning online by utilizing technology is deemed less effective and not can be fully successful for MI age children, because they still need direct interaction from the teacher in understanding the material. Thus, the authors are interested in knowing the extent to which the blended learning model has been implemented using the WhatsApp media, because the whatsapp media is a learning medium that is easy to use in the learning process. This research uses descriptive qualitative research, data obtained through observation, interviews and documentation related to the application of the blended learning model at MI Tarbiyatus Shibyan.
Professional self-determination of students with disabilities
Authors:   Yaroslavl state pedagogical university named after К. D. Ushinsky, Chernyavskaya Anna P. , Shipkova Ekaterina N. ,   SEI YarR «Center for assistance to children», Egorova Polina A. ,   SEI YarR «Center for assistance to children»
Published: March 2022

The article presents the results of the development and implementation of effective practices aimed at assisting professional self-determination of disabled children with and children with physical condition (PC) in the continuing education system. The effectiveness of this work in the conditions of distance learning is shown. The professional self-determination of students with PC is complicated by a number of conditions, both related to health restrictions available to the student and a limited range of possible professions. Making a choice that meets the desires and opportunities of such a student is very important, since this ensures his independence and full life in the future. The article analyses the conditions of professional self-determination of children who are unable to attend educational institutions systematically and stay there or at home; the need and possibility of providing them with assistance in a distance school are justified. The results of diagnosis of parental position on vocational guidance of a disabled child and results of questionnaire of students are presented. An additional general-education program developed for children with disabilities and children with physical condition of 8 9 classes is described in order to update the process of professional self-determination of children with disabilities and children with PC, prepare them for making informed professional choices taking into account the individual characteristics and capabilities of students, implemented as part of distance learning in the context of continuing education.
Aesthetic attitude to the world in the pedagogical experience of A. S. Makarenko
Authors:   Academy of state fire-fighting service, Moscow, Lipskiy Vladimir N.
Published: March 2022

The experience of A. S. Makarenko in the re-educating «difficult» teenagers (a considerable part of which were essentially juvenile criminals) became the foundation in the work of teachers of many generations of educatorsboth during the USSR and in the years of new Russia, and the name of A. Makarenko stands in the line with the best teachers of the world. The article shows that one of the leading places in the educational system of Makarenko was occupied by the ability of innovative teacher to saturate all the spheres of activity of his pupils with aesthetic ingredients. Moreover, this saturation was of an organic nature, in which the functional content of any activity performed by colonists (communards) was considered in direct connection with the aesthetically beautiful. The methodological concept of perspective lines is considered in the issue of the formation of a conscious sense of aesthetic attitude to the world among the pupils of Makarenko.The fundamental role in the formation of the aesthetic culture of colonists and communards was occupied by industrial activities. During the implementation of such activities, a practical and aesthetically significant goal was put forward and in the process of achieving that goal the subject (pupil) was overcoming the difficulties that arose and thus acquired versatile knowledge and skills, thereby improved in a professional sense. After reaching the near goal, a new goal was put forward and the whole cycle was repeated again. Thus, moving along perspective lines, significant results were achieved, and the process of activity itself acquired aesthetic meaning. The place and the role of art in the formation of the aesthetic culture of pupils is analyzed. It is shown that all types of art were used by Makarenko, the teacher, to instill specific practical knowledge and skills in the educated: theatre, literature, musical, choral and fine arts. They were aimed at solving practical and educational tasks. Thus, the aesthetic attitude was embedded in the very essence of the organization of the educational system of Makarenko.
The eponymous priesthood of Ptolemaic Egypt as an element of the syncretic culture of the Hellenistic era
Authors:   Yaroslavl state pedagogical university named after К. D. Ushinsky, Basalova Nataliya S.
Published: March 2022

The article is devoted to considering eponymous priesthood in the Hellenistic Egypt to be as a phenomenon, which was not only one of the methods of Greek and Egyptian religious cultures assimilation, but also a way of ideological propaganda of outstanding representatives in the new dynasty among the locals. The author gives a brief review of foreign and domestic scientific researches in the field of religious syncretism in the Hellenistic Egypt. The author concludes that in foreign works Ptolemy’s religious policy is analyzed from philosophical, anthropological and art points of view. Also it is pointed out that many works give mostly generalized information. The author points out, that domestic scientific works are focused on the research of religious interrelation between the Ptolemies and the locals from the political and economical points of view. The author reviews eponymous priesthood named after Alexander («deified Founder»), named after Arsinoe («athlophore») and named after Berenice («canephoroi»), which appeared under the first Ptolemies. The author notices, that eponymous priesthood of Alexander was integrated into eponymous priesthood named after Arsinoe and Berenice rather quickly. The author analyses the reasons of eponymous priesthood appearance, pointing out that they were of person-centered nature, but didn’t have political and economical basis. The author also reviews the matter of eponymous priesthood’s requirements and emphasizes the existence of gender criterion while gathering officers in eponymous cathedrals. The author analyzes the ethnic composition of eponymous priesthood and states that women of both Greek and Egyptian origin could become priestesses. The author notices, that the very significant condition was the origin of the candidate from well-to-do families, who also had to have a high social status. The author marks that women in eponymous cathedrals got the right to manage the cathedral for the first time. The author pays attention to occupation of eponymous priesthood and concludes that the main function of athlophore and canephoroi was in cult glorification of deified representatives in Ptolemaic dynasty
Reflexive-dialogical look at the musical art of the Soviet period (1930-1950)
Authors:   Yaroslavl state pedagogical university named after К. D. Ushinsky, Bochkareva Olga V.
Published: March 2022

The reflexive-dialogical view allows us to rethink the heritage of Soviet art. The totalitarian policy of the USSR is paradoxical in its essence: anti-religious propaganda did not destroy religiosity, but used it to create new myths, manipulating the mass consciousness. Based on archetypes and mythologemes, the new doctrine creates the image of a «new man», ready for obedience, for submission, putting the interests of the state above his own. In manyrespects, the state ideology was closed on itself, when the opposition «we» (the Soviet Union) and «they» (the West, hostile to us) was clearly declared, the idea of the superiority of socialism over capitalism was introduced into the minds of people, the war was going on in the minds of people. With the aim of introducing the basic dogmas of political ideology into the sphere of musical art, introducing uniform creative principles of socialist realism, obligatory for all musicians: composers, performers, critics, etc., a new organization was created (Union of Soviet Composers, 1932). Collectivism, being a component of Soviet ideology, took on a massive scale and expressed itself in the phenomenon of «mass song». The main characteristics of the mass song genre are highlighted: artistry, simplicity, brightness of a memorable melody, verse-chorus form, accessibility to perception, replicability. The cantata-oratorio genre plays the role of the genre dominant of the «grand style», with its monumentality, the idea of praising the «father of nations» and glorifying the myth of the inviolability of the imperial power of the state. Composers and performers of the Soviet era continued the best domestic traditions, preserved those universal spiritual principles that political and ideological censorship could not influence, although to a certain extent they held back creative thought, wounded and sometimes humiliated a creative person. The depth of reflection on the problems of modern reality, the author's vision and individual view of the values and meanings of life gave rise to the originality of the artist's ethical reflection, regardless of ideological influence.
Model of organization of socio-cultural youth adventure practices
Authors:   Saratov national research state university named after N. G. Chernyshevsky, Ivanov Maksim V.
Published: March 2022

The article presents theoretical materials devoted to the urgent problem of socio-cultural adventure practices and their educational effectiveness in relation to the modern student. The modern student is not like the student of past decades, and innovative educational methods are required to work with him. One of these methods can be the social and cultural practice of youth adventure. The purpose of the described research is development of a model for the creation and use of socio-cultural practices of youth adventures as a means of educating a student's personality on the example of a campaign. The practice of youth adventure has a number of pedagogically useful features that allowit to have a complex educational impact on the student. Creating a descriptive model of the sociocultural practice of youth adventures in the form of a hike, we rely on certain pedagogical approaches and principles, as well as on the theory of collective creative activity of I. P. Ivanov. The advantages of the hike, in the ability to synthesize physical and intellectual activity, together with the vast possibilities of cognizing the environment, turn out to be a decisive factor for us in choosing the form of social and cultural practice of youth adventure. The hike becomes the basis for the introduction of a role element that allows students to distribute the process of cognition of the world around them to specific sciences, which will allow to collect more information in aggregate and more effectively immerse students in the matter of different (interesting to them) sciences. At the end of the trip, the knowledge gained is exchanged, which helps to improve relations within the team and stimulates students' interest in various sciences. Since the hike is conducted in the home area for the students, the practice also fosters a sense of patriotism.
Potensi Sektor Pertanian Untuk Pengembangan Wilayah Di Kabupaten Balangan
Authors: Kumalawati Rosalina , Nasruddin Nasruddin , Murliawan Karnanto Hendra , Anggraini Rizky Nurita
Published: March 2022

Abstrak Sektor pertanian memegang peranan penting dalam pembangunan perekonomian nasional saat sekarang dan masa mendatang. Sektor pertanian tumpuan hidup sebagian besar penduduk. Mengetahui potensi sektor pertanian sangat penting untuk mengetahui pengembangan suatu wilayah.  Semakin meningkat luas panen, produksi dan produktivitas bidang pertanian dari waktu kewaktu maka dapat mendukung perkembangan wilayah termasuk perkembangan perekonomian. Tujuan penelitian ini adalah bagaimana potensi sektor pertanian untuk pengembangan wilayah di Kabupaten Balangan. Penelitian dilakukan di Kabupaten Balangan termasuk Kabupaten yang masih baru dibandingkan Kabupaten yang lain. Jenis data yang digunakan dalam penelitian ini adalah data sekunder. Sumber data sekunder diperoleh Kabupaten dalam Angka, Badan Pusat Statistik, Dinas Pertanian, DisPTPHPP Balangan dan BAPPEDA. Teknik analisis menggunakan deskriptif kualitatif dan kuantitatif. Variabel dalam penelitian ini adalah potensi sektor pertanian untuk pengembangan wilayah. Temuan dari penelitian adalah mengetahui potensi sektor pertanian untuk pengembangan wilayah di Kabupaten Balangan. Keterbatasan penelitian adalah membatasi potensi pada sektor pertanian tanaman pangan. Hasil yang didapatkan penelitian ini (a) luas panen, jumlah produksi dan produktivitas padi gogo dan jagung, meningkat selama tahun 2015-2019, sedangkan luas panen padi sawah dan kedelai menurun, (b) Penurunan luas panen harus menjadi perhatian karena disebabkan oleh adanya alih fungsi lahan pertanian yang semakin tinggi, (c) Alih fungsi lahan yang ada dapat mempengaruhi perkembangan wilayah yang ada di Kabupaten tersebut. Kata Kunci : Potensi, Sektor Pertanian, Pengembangan Wilayah
SEBARAN HOTSPOT TAHUN 2012-2021 DI KALIMANTAN SELATAN
Authors: Kumalawati Rosalina , Yuliarti Astinana , Anggraeni Rizky Nurita , Murliawan Karnanto Hendra
Published: March 2022

Abstrak. Kebakaran hutan dan lahan gambut di negara berkembang selalu menjadi perhatian dunia. Kebakaran yang marak terjadi banyak disebabkan antara kombinasi aktivitas manusia yaitu deforestasi, perubahan tutupan lahan, serta pertambahan penduduk, dan juga efek dari penyimpangan iklim yang meningkatkan kejadian kebakaran hutan dan lahan. Kejadian kebakaran hutan dan lahan di Kalimantan Selatan  merupakan kejadian yang hampir terjadi setiap tahun pada musim kemarau. Tujuan penelitian ini adalah mengetahui sebaran hotspot di Provinsi Kalimantan Selatan sejak 2012 hingga 2021. Penelitian dilakukan di 13 Kabupaten/Kota Provinsi Kalimantan Selatan. Data yang digunakan pada penelitian ini adalah data sekunder dari studi literatur. Pengambilan data dilakukan dengan mengambil beberapa informasi mengenai kejadian kebakaran hutan dan lahan secara temporal. Data yang diambil adalah data hotspot dari citra satelit SNPP VIIRS dari Tahun 2012-2021. Temuan dari penelitian adalah Jumlah hotspot dari Tahun 2012-2021 naik turun setiap tahunnya kadang naik kadang turun, penurunan yang terjadi disebabkan banyak faktor seperti faktor cuaca atau curah hujan. Hotspot paling tinggi pada Tahun 2015 karena kebakaran pada Tahun tersebut disebabkan oleh adanya anomali iklim yaitu fenomena El-Nino di Samudera Pasifik yang menyebabkan terjadinya kekeringan di Indonesia, daerah dengan jumlah hotspot tinggi berarti memiliki potensi terjadi kebakaran juga tinggi sehingga daerah tersebut harus memiliki mitigasi yang tepat dan masyarakat yang siaga terhadap bencana.Kata Kunci: SNPP VIIRS, Hotspot, Kebakaran hutan dan lahan
CD15 and CD15s in The Anticancer Therapy
Authors: Szlasa Wojciech , Wilk Karol , Knecht-Gurwin Klaudia , Gurwin Adam , Froń Anita , Sauer Natalia , Saczko Jolanta , Szydełko Tomasz , Kulbacka Julita , Małkiewicz Bartosz
Published: March 2022

CD15 (Lewis X/Lex) is a fucosyl (3-fucosly-N-acetyl-lactosamine) moiety found on membrane proteins of various cancer cells. These include renal cancer, prostate and bladder cancers, acute leukemias, hepatocellular carcinoma, breast cancer and melanoma. The antigen plays an espe-cially significant role in renal cell carcinoma. Its high expression serves as a good prognostic marker for patients and high hopes are related to its use in the immunotherapy of the tumor. The biological role of CD15 is the interaction with E-, L- and P-selectins (adhesion molecules) and al-lowing for the adhesion with the endothelial cells. In this way, cancer cells start to interact with the endothelium of blood vessels and consequently move out from the blood flow to the sur-rounding tissues. The blockage of antigen’s function results in reduced metastatic potential. Moreover, the molecule may be a therapeutic target against cancer in monoclonal antibod-ies-based therapies. CD15s is a sialyl derivative of CD15, that possess its own unique characteris-tics. Unlike high expression of CD15, which is a prognostic factor in Hodgkin lymphoma, CD15s relate to poor prognosis for the patients. Due to the high abundance in cancer cells, CD15 is con-sidered as a marker of Cancer Stem Cells. This review presents a comprehensive description of the role of CD15 and CD15s in cancer development and metastasis and overviews the clinical appli-cations of the anti-CD15 therapy.
The Ulug-Sair Gold-Bismuth Ore Occurrence (Western Tuva, Russia): PT Parameters, The Composition of Fluids, and Isotopy of S and O
Authors: Kuzhuget Renat Vasilievich , Ankusheva Natalia Nikolaevna , Mongush Andrey Aleksandrovich , Butanaev Yury Vladimirovich , Suge-Maadyr Nadezhda V.
Published: March 2022

We examined PT parameters, geochemical peculiarities, and fluid sources of the Ulug-Sair ore occurrence attributable to class of intrusion-related gold deposits and according to ore mineral assemblages corresponding to Au-Bi type with wide Bi minerals (AgBiTe, Bi2Te2Se, Cu3,07BiS3, Bi), tellurides (Au and Ag), Se-tellurides (Ag and Bi), and selenides (Au, Ag, and Hg). We identified that ‘pre-gold’ quartz-tourmaline veins were deposited using an aqueous Mg-Na-K-chloride fluid with a salinity of 8–10 wt % NaCl eq. At 325–370 °C; host breasts were formed due to a CO2-water fluid containing CH4 and N2, with a salinity of 0,18–6,1 wt % NaCl eq. at least 200–400 °C. Gold-bearing mineral assemblages were formed at P ~ 0,75–1,0 kbar (~ 2,3–3 km) due to CO2-water chloride (Na-K±Fe, Mg) fluid with CH4, Na2SO4, and Na2B2O5, and salinities 1,7–12,5 wt % NaCl eq. during the decreasing temperatures from 360 up to 115 °C (gold-sulfide-quartz veins – 360–130 °С, and gold-telluride-sulfide-quartz veins – 330–115 °C) and variations fO2, fS2, fSe2, and fTe2. The isotopic composition of δ34SH2S fluid (-0,7…+2,5 ‰) indicates the juvenile or magmatic origin of fluid and ore elements. The δ34OH2O fluid indicates that, at an early substage, the formation of ore occurrence involved a fluid of magmatic or metamorphic origin (+7,3…+11,4 ‰), and, in the later substage, it mixed with meteoric waters (-2,3…+9,1 ‰).
Nitrogen and Carbon Removal Capacity by Farmed Kelp Varies by Species
Authors: Umanzor Schery , Stephens Tiffany
Published: March 2022

An increasing body of evidence shows that seaweeds, including kelp, can be used as a tool to neutralize or remove excess nutrients and metals from the water column. Here we report on a preliminary field assessment showing potential nutrient and carbon removal differences by sugar kelp and ribbon kelp grown in common gardens. Seawater and tissue samples were collected systematically from two farms in Alaska. Results show differences between % N and % C content between ribbon kelp (Alaria marginata) and sugar kelp (Saccharina latissima). Results also show that tissue nitrogen in ribbon kelp varies sharply due to nitrogen availability in the water column. In contrast, the percentage of tissue N in sugar kelp remains comparatively stable. Our outcomes provide insight into potential differences in nutrient removal and harvest timing for different kelp species.
Data-Driven EEG Band Discovery with Decision Trees
Authors: Talebi Shawhin , Waczak John , Fernando Bharana , Sridhar Arjun , Lary David J.
Published: March 2022

Electroencephalography (EEG) is a brain imaging technique in which electrodes are placed on the scalp. EEG signals are commonly decomposed into frequency bands called delta, theta, alpha, and beta.While these bands have been shown to be useful for characterizing various brain states, their utility as a one-size-fits-all analysis tool remains unclear. We present a two-part data-driven methodology for objectively determining the best EEG bands for a given dataset in this paper. First, a decision tree is used to estimate the optimal frequency band boundaries for reproducing the signal’s power spectrum for a predetermined number of bands. The optimal number of bands is then determined using an Akaike Information Criterion (AIC)-inspired quality score that balances goodness-of-fit with a small band count. Data-driven EEG band discovery may aid in objectively capturing key signal components and uncovering new indices of brain activity.
ENERGÍA HÍBRIDA PARA ÁREAS RURALES DISPERSAS DE LA PROVINCIA DE SANTIAGO DEL ESTERO (ARGENTINA) EN EL MARCO DE LOS ODS 2030 Y LAS MDBA
Authors:   Universidad Nacional de Santiago del Estero (UNSE), FERNÁNDEZ FRANCO , FERREIRO ALEJANDRO , JUÁREZ CARLOS , CADENA CARLOS , MOYANO LUIS
Published: March 2022

The provision of sustainable energy solutions in Rural Areas with Dispersed Population (ARPoDs) without the possibility of interconnection to power grids in the Province of Santiago del Estero (Argentina), motivates a preliminary analysis of the context at the global, national and provincial levels, and then to explore options that integrate different energy sources applied to a case study, specifically to the community located in the town of Las Viboritas, in the Mitre department of the aforesaid province. The purpose of the work is to present the analysis of the energy situation and possible energy supply solutions in the field of ARPDs from an integrative perspective, based on the 2030 ODS and the so-called New Rurality. In addition, the study of an alternative using solar-wind hybrid energy systems is described, contrasted with other options, even based on fossil fuels. A recognized computational tool is applied that allows optimizing the operation of systems with hybrid energy sources for each hour of the year. The design is carried out from the quantification of the demand, the dimensioning and cost of the technologies that make up the hybrid system, and the availability of renewable resources at the site under study. As a result, a solar-fossil hybrid system with a lithium accumulation bank is proposed, since this system presents greater reliability and safety for its operation as an isolated network.
PROPUESTA DE MEJORAMIENTO DE LA SEGURIDAD MEDIANTE DRONES EN LA CIUDAD DE BOGOTÁ (PROJECT SELANTROPHUS)
Authors:   Corporación Universitaria Republicana, BERMÚDEZ CIFUENTES ALEJANDRO , RAMIREZ LUGO PAULA ALEJANDRA , HERRERA MOSQUERA YEISON CAMILO , OLAYA ROMERO WILIAM FERNANDO
Published: March 2022

This project seeks to propose a drone system to improve security in Bogotá, given that insecurity rates have increased significantly in recent years and even more so in the COVID-19 pandemic. The proposal is based on having an integrated system with special characteristics to face different situations, the drones would be equipped with non-lethal weapons, photo captures for facial and vehicle scanning, real-time location sending, aerial patrolling in more frequent areas of criminal acts, among other functions.
Prevention and Control Effect of Rockburst in Superhigh-Water Backfilling Mining under Deep Coal Seam
Authors: Ren Shuai , Yu Guofeng , Luo Yong , Lu Dechao
Published: March 2022

Safe, efficient, and green mining of deep coal seams is a major problem to ensure the healthy development of China’s national modern energy economy. To explore the prevention and control effect of superhigh-water backfilling mining on rockburst, taking CG1302 working face of Shandong Yineng coal mine as the engineering background, it is explored through theoretical analysis, numerical simulation, and field monitoring. It is concluded that mining depth, mechanical properties of coal and rock mass, overburden conditions, geological structure, and roadway layout of the working face are the main influencing factors to induce rockburst, and it is determined that the Yineng coal mine has the conditions for rockburst. Based on the energy theory, the distribution law of coal deformation energy is analyzed, and the minimum kinetic energy of rockburst is calculated as Emin=77 kJ/m3. The energy accumulation in coal seams under different backfilling rates is simulated. Compared with caving mining, superhigh-water backfilling mining can effectively reduce the energy accumulation degree of coal seams and prevent the occurrence of impact dynamic disasters. Field microseismic and coal body stress monitoring results show that superhigh-water backfilling mining can effectively reduce the working face pressure and achieve the effect of preventing rockburst.
Characterization of the Giant Chicontepec Tight Oil Paleochannel in Mexico and Integration With Actual Cumulative Oil Production
Authors: Gutierrez Oseguera Alejandra , Aguilera Roberto
Published: March 2022

The Chicontepec Paleochannel contains unconventional tight oil shaly sandstone reservoirs also characterized by natural fractures. Chicontepec ranks as a giant reservoir with volumes of Original-Oil-in-Place (OOIP) ranging between 137,300 and 59,000 MMbbls (Guzman, 2019). Although the cumulative oil is significant (440.38 MMbbls) it only represents 0.32 to 0.75% of the OOIP. The objective of this study is developing a new characterization methodology with a view to increase oil recovery from Chicontepec. OOIP in Chicontepec paleochannels was estimated originally at 137,300 MMbbls. Despite several studies using state of the art methodologies, contracting major oil field services companies to test new technologies, and significant investments, the OOIP was decreased recently to 59,000 MMbbls due to lack of any significant success on the implemented projects.

This study shows that the key to success is understanding the contribution of natural fractures. This is demonstrated with a new dual porosity petrophysical model for naturally fractured laminar shaly sandstone reservoirs developed in this study. The model assumes that matrix and fractures are in parallel. Laminar shaliness is handled with a parameter (Alam) that is a function of true and shale resistivities, and fractional shale volume.

The methodology integrates data from observations in outcrops, quantitative evaluation of cores, well logs and actual production data. Past Chicontepec studies have assumed that the porosity exponent (m) in Archie and shaly sandstone equations, is constant. However, core studies indicate that Chicontepec m values become smaller as porosity decreases. The proposed dual porosity petrophysical model, when applied to actual Chicontepec wells, matches properly the laboratory values of m, and generates results that compare well with actual production data, e.g., the larger the value of fracture partitioning the larger is the cumulative oil production. Pattern recognition allows estimating fracture intensity with a partitioning coefficient, which is calculated as the ratio of fracture porosity to total porosity.

The novelty of this study is the development of a new petrophysical dual porosity model for naturally fractured shaly sandstone reservoirs that integrates variable values of m from cores, fracture intensity, and cumulative production of individual Chicontepec wells. Thirty-one wells have been evaluated with good results using the proposed model.
Natural Gas Hydrate Equilibria in Brine Including the Effect of Inhibitors on Hydrate Formation
Authors: Sahari Moghaddam Farzan , Mahmoodi Maziyar , Zare Marziyeh , Goodarzi Fatemeh , Abdi Majid , James Lesley
Published: March 2022

Preventing hydrate formation is critical to safely and economically manage subsea tiebacks. Thermodynamic Hydrate Inhibitors (THI) and Low Dosage Hydrate Inhibitors (LDHI) help manage hydrate formation. Here, we use a novel isothermal approach using a PVT cell to experimentally find the hydrate equilibrium point of natural gas and brine. In addition, a constant temperature and pressure condition is used to compare hydrate formation with and without hydrate inhibitors.

First, to better understand the novel isothermal technique, natural gas-brine equilibrium experiments were conducted. Secondly, a constant pressure and temperature approach is used to investigate Kinetic Hydrate Inhibitors (KHIs) and low dosage methanol performance on hydrate formation. The formation and dissociation points are detected through a sudden drop or peak in the pressure profile, respectively, and by visual observation. To evaluate inhibitor performance, the experiments were conducted at challenging temperatures between -0.5°C to 3°C, applicable to the environment offshore Newfoundland and Labrador.

Two commercial KHIs and one THI were tested. Both KHIs showed good performance up to certain level of subcooling according to their concentration. However, KHI-B performed better at inhibiting hydrates compared to KHI-A despite its lower concentrations compared to KHI-A. The induction time for 1 wt% KHI-A under 10°C subcooling at a temperature of 0.75°C was 311 min. The induction time for 1 wt% KHI-B under 12°C subcooling at a temperature of 2.66°C was 184 min. Yet, in the case of KHI B, with half the concentration (0.5 wt%), no hydrate formed at temperature of 1.21°C and 10°C subcooling. Low dosage methanol (a common THI) was also assessed. Although the induction time under 10.36°C subcooling and constant temperature of −0.43°C was only 47 min, no hydrate formed within 22 hours at −0.12°C under 7.5°C subcooling.

This work uses a novel experimental isothermal approach by PVT cell to investigate hydrate equilibrium and the effectiveness of different inhibitors. Hence, a better understanding of natural gas hydrate equilibrium in brine is developed. Based on significant costs associated with injecting high quantities of THI (e.g., methanol) to prevent hydrate formation, this work also compares the performance of KHIs and low dosage THI (methanol).
The Application of Complex Displacement in Cyclic Steam Stimulation CSS & Steam Flooding SF Development in Liaohe Oilfield: A Field Performance Study
Authors: Liu Jianfeng , Wu Xiaoming , Sun Shouguo , Hao Ling
Published: March 2022

The oil/steam ratio for both Cyclic Steam Stimulation (CSS) and Steam Flooding (SF) has almost reached economic limits in Liaohe, China's largest heavy oilfield. Complex displacement of CSS and SF assisted with foaming agents and CO2 has been applied at commercial scale to increase the oil production. In this paper, we will present a field case study of the complex displacement operation. We will discuss the details from the foaming agent selection, completion design, operation management and performance data analysis.

To improve production rates for the low producing CSS and SF wells, a recovery method of complex displacement has been implemented at commercial scale in Liaohe oilfield. The application of the method depends on the reservoir condition, well completion design, injection time, types of foaming agents and so on. After a complicated optimization and careful field implementation, a satisfactory result was achieved. A complete field case will be studied in detail and comprehensive field performance data will be presented and analyzed.

For both CSS and SF operations, the type of foaming agent and especially its injection rates for each of these operations is the key to the success of the project. Different types of foaming agents and injection rates have been trialed. The injection rates of CO2,and steam to form the agent have been optimized. Relatively mature complex displacement development technology has been developed for both CSS and SF and will be presented in the paper. As of today, more than 480 CSS wells have been operated with the assistance of CO2. The oil/steam ratio in those application well groups has increased by 7%, while the operating cost has decreased by 7.9%. Three SF well groups assisted with hot air foam have been tested. The incremental oil production was more than 60%. The goals of cost reduction and oil production increase have been achieved with the complex displacement method in both CSS and SF.

As far as we know, this is the first paper to comprehensively introduce this type of complex displacement recovery method for CSS and SF in heavy oil operations.

This complex displacement recovery method has been proved to be an effective method to improve the heavy oil recovery in Liaohe. It is believed the learning and experience can be beneficial for the other heavy oilfields around the world. In the meantime, it could also facilitate the utilization and storage of CO2.
On Numerical Modelling of the Hydraulic-Fractured Closed Loop Systems: Single Producer
Authors: Irani Mazda , Ghannadi Sahar , Nick Daprocida Nick Daprocida , Lacoste-Bouchet Pierre , DiStefano Vince
Published: March 2022

There are large regions of the subsurface where the temperature is sufficiently hot to generate geothermal electricity within reasonable drilling depths, but the formation does not have enough permeability to create heated water productivity. The primary bottleneck is the difficulty of achieving adequate flow rate in such geothermal reservoirs. These formations are referred as hard dry rock (HDR). In these formations two common applications are conducted: Enhanced (or Engineered) geothermal systems (EGS) and Advanced geothermal systems (AGS). AGS is a closed-loop system that are built on wells drilled that connect with each other allowing a heat exchange-type to set up beneath the surface. There has recently been a lot of attention to the concept of ‘closed-loop geothermal’. The concept is still evolving and few startups such as E2E Energy Solutions, Eavor Technologies, and Green Fire Energy suggested different types of the closed-loop to optimize the technology. Since the technology only relies on conduction as the only source of heat transfer to improve the economics of the closed-loop E2E Energy Solutions suggested to use the hydraulic fracture to increase the surface area between the well and the geothermal reservoir. Such process is called Enhanced Geothermal Reservoir Recovery System (EGRRS).

In the E2E's EGRRS process, a fluid would be produced from an existing hot subterranean aquifer reservoir, close to a favorable geothermal zone, instead of creating the whole loop from the surface. The fluid withdrawn from a hot subterranean reservoir would be contacted with a hydraulically fractured zone in the geothermal zone, which would result to additional energy transfer and therefore a higher enthalpy once the fluid reaches the surface. The plan is to reach temperatures above 200°C that greatly increasing the electrical generation potential.

Although to implement the EGRRS process we are using the common oil and gas practice but to optimize and design the process using current modelling techniques is not achievable. Current simulation schemes cannot model such complex system, and to resolve this, a new framework must be designed to resolve the challenge. In this paper we present a new method that calculate rate to each branch by a new iterative approach that resolve the problem on how fractions of different pipe should be solved. Since the closed-loop wells are connected to the subterranean aquifer reservoirs and operator required to keep the WHP at constant pressure, there is another layer of iteration that required to solve for fraction on each pipe and BHP at the aquifer. Finally, to model the heating in the fractured zone, a new resistance is added to the model to mimic the heating exchange between the fracture and the fluid? and also the fracture and the radiator formation.
Improvement of Energy Efficiency in Gas Condensate Stabilization Unit: Process Optimization Through Exergy Analysis
Authors: Hajizadeh Abdollah , Mohamadi-Baghmolaei Mohamad , Mirghaderi Fatemehsadat , Azin Reza , Zendehboudi Sohrab , Saneei Taghi , Rajaei Hamid , Keshavarzian Sajjad
Published: March 2022

Gas condensate stabilization is a common process in gas refineries and petrochemical industries. This process is energy-consuming since it uses distillation columns and furnaces to separate different cuts from the condensate feed. This study aims to improve the performance of the gas condensate stabilization unit in a large petrochemical company in terms of energy efficiency and loss prevention. The case under investigation is the gas condensate stabilization unit in the Nouri Petrochemical Company, treating 568 t/h of raw condensate feed. This plant includes two distillation columns, two furnaces, pumps, heat exchangers, and air coolers. A hybrid energy and exergy analysis is conducted in this study. First, the validation of the simulation phase is performed, and a parametric sensitivity analysis is conducted to explore the effects of various parameters, such as operating temperature and pressure, on the process performance. After that, the most influential variables are identified using thermodynamic analyses for optimization and design purposes.

An optimization method is employed to attain the maximum production improvement and exergy efficiency. The exergy analysis shows 187.4 MW total exergy destruction in the plant; furnaces account for 79% of the total exergy destruction. According to the sensitivity analysis results, the energy consumption of the process could be reduced by 33.7 MW; this is an 18% reduction in the plant's energy consumption. The optimal process conditions outperform the current and design states (4.6% improvement in exergy efficiency). The fuel gas consumption is reduced by 2.1 t/h, leading to a reduction of 128 t/d CO2 emissions.
Tripping Optimisation for Drilling Systems Automation: Potential of Digital Twins, Transient Models and Control Systems to Reduce Invisible Lost Time in Well Construction
Authors: Forshaw Matthew J. , Madeira Rafael A. , Arévalo Pedro J.
Published: March 2022

Tripping, the process whereby a string is moved in either axial direction makes up 30% of the well construction time and is therefore responsible for a significant portion of capital expenditure by operators. Typically, the focus in the industry in optimizing this segment of the operation has centered on minimizing the slips-to-slips connection time. This references the time taken to swing in and make-up, or breakout and rack-back a stand before engaging elevators to either run-in or pull-out with the next component. This required both human-process optimization through training and technological development of topside equipment, first in isolation and then through systems automation. This paper recognizes these optimization efforts but identifies additional potential to significantly reduce invisible-lost-time (ILT) during tripping operations even further by reducing out-of-slips running time in tripping operations, all while keeping wellbore pressures within the safe operating envelope.

Physics-based steady-state fluid dynamics models have been in use for decades to define boundary conditions for these operations. These swab and surge calculations output a velocity limit for moving pipe. Models that are more complex have begun to diffuse into the commercial environment over the last decade and enhance borehole protection by providing a coupled acceleration limit. Acceleration and velocity are inherently linked so an optimization must be performed to arrive at the optimum velocity-time curve.

In this paper we present real-time engineering simulations to create a digital twin of the downhole environment and calculate optimum tripping parameters for every stand. The parameters are then passed as set-points to automated rig control systems. The paper summarizes the physics-based modelling as well as the mathematical optimization. The system, including interfaces required to implement control in the context of drilling systems automation is also described. Field examples are presented whereby exposing actual real-time measurements and derived tripping boundary conditions in an intuitive, accessible user interface can lead to performance improvements.

The ability to calculate the optimum velocity-time curve is the essential ingredient in gaining efficiency while out-of-slips during tripping operations, and simultaneously staying within a safe operating envelope. The resulting reduction in invisible-lost-time demonstrated, and associated reduction in rig time has obvious financial implications for operators and increasingly more important, helps achieve critical ESG targets. Finally, the paper will touch the need, and applicability of such technology in the energy transition new frontiers, specifically geothermal.
A Machine Learning Approach to Real-Time Uncertainty Assessment of SAGD Forecasts and the Optimization of Steam Allocation
Authors: Hunyinbo Seyide , Azom Prince , Ben-Zvi Amos , Leung Juliana Y.
Published: March 2022

Field development planning and economic analysis require reliable forecasting of bitumen production. Forecasting at the field level may be done using reservoir simulations, type-curve analysis, and other (semi-)analytical techniques. Performing reservoir simulation is usually computationally expensive and the non-uniqueness of a history-matched solution leads to uncertainty in the model predictions and production forecasts. Analytical proxies, such as Butler's model and its various improvements, allow for sensitivity studies on input parameters and forecasting under multiple operational scenarios and geostatistical realizations to be conducted rather quickly, despite being less accurate than reservoir simulation. Similar to their reservoir simulation counterparts, proxy models can also be tuned or updated as more data are obtained. Type curves also facilitate efficient reservoir performance prediction; however, in practice, the performance of many SAGD well-pairs tends to deviate from a set of pre-defined type curves.

Historical well data is a digital asset that can be utilized to develop machine learning or data-driven models for the purpose of production forecasting. These models involve lower computational effort compared to numerical simulators and can offer better accuracy compared to proxy models based on Butler's equation. Furthermore, these data-driven models can be used for automated optimization, quantification of geological uncertainties, and "What If" scenario analysis due to its lower computational cost.

This paper presents a novel machine learning workflow that includes a predictive model development using the random forest algorithm, clustering (to group wells by geological properties), Bayesian updating, Monte Carlo sampling (for uncertainty quatification), and genetic algorithm for the forecasting of real-world SAGD injection and production data, and optimization. The training dataset involves field data that is typically available for a SAGD well-pair (e.g., operational data, geological, and well design parameters). Just as importantly, this machine learning workflow can update predictions in real-time, be applied for the quantification of the uncertainties associated with the forecasts, and optimize steam allocation, making it an important step for development planning and field-wide optimization. To the best of the author's knowledge, this is the first time that machine learning algorithms have been applied to a SAGD data set of this size.