bluuebunny/crossref_metadata_2025_split huggingface dataset:
INFLUENCE OF THE OXIDIZER ON THE FORMATION AND PURIFICATION EFFICIENCY OF ACID GASES PRODUCED DURING ASPHALTENE GASIFICATION
Authors: Ермолаев Денис Васильевич , Даминов Айрат Заудатович 
Published: April 2022

Link for citation: Ermolaev D.V., Daminov A.Z. Influence of the oxidizer on the formation and purification efficiency of acid gases produced during asphaltene gasification. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2022, vol. 333, no. 4, рр. 215-223. In Rus.
The relevance of the study is determined by the need to understand the influence of the oxidizer on the formation of acid gases (CO2, H2S, COS and CS2) during thermal decomposition of high-viscosity hydrocarbons. This is important for predicting the purification efficiency of the produced gasification products and estimating the economic costs. The aim: using the simulation to study the effect of an oxidizer in the form of steam on the composition and properties of asphaltene gasification products obtained from natural bitumen, as well as to determine the cleaning efficiency depending on the amount of steam and the absorbent based on NaOH water-alkaline solution. Object: asphaltene of natural bitumen of Ashalchinskoe field of the Tatarstan Republic (Russia), oxidizer in the form of steam, the value of which varied from 0,1 to 1 depending on the amount of asphaltene. Methods: simulation of asphaltene gasification and acid gas absorption taking into account influence of an oxidizer in a form of steam with regard for basic chemical kinetics, ultimate analysis and TGA. Simulation results of gasification and absorption showed that steam used as an oxidizer during asphaltene gasification has a significant influence on the composition and properties of gasification products, as well as on the purification of syngas. With the increase of steam, a parabolic dependence of the concentrations of syngas components is observed, which values decrease with time, except for CO2. The calorific value of syngas decreases from 11,3 to 7,2 MJ/m3 and the cold gas efficiency increases from 53,4 to 62,5 % due to growth of syngas yield. As the amount of steam increases, the amount of absorbent decreases and the purification efficiency of acid gases rises. Thus, the amount of absorbed CO2 increases by 20,7 % while the absorbent decreases by 6,7%. At the same time the amount of absorbed H2S increased by 0,39 % with decrease of NaOH by 40,9 %.
Don Quijote, el escribidor y el escritor
Authors: Pollarolo Giovanna 
Published: April 2022

En sus diversos estudios críticos, Mario Vargas Llosa ha mostrado un especial interés en reflexionar sobre la teoría novelística de Miguel de Cervantes en función de sus propias preocupaciones como estudioso y novelista. Basta leer el ensayo “Una novela para el siglo XXI” que escribió en 2005 como introducción para la edición del Quijote con motivo de la celebración del IV Centenario, para constatar que Vargas Llosa “lee” a Cervantes en función de sus propias reflexiones sobre la teoría de la novela, el fanatismo o la “locura” de los personajes, la ficción y sus relaciones con la “realidad”, las voces narrativas o el problema del narrador. Pero la relación de Mario Vargas Llosa con Cervantes va más allá del ámbito teó-rico o reflexivo y se manifiesta en la propia creación novelística tal como ocurre, específicamente, en La tía Julia y el escribidor. En ese sentido, el objetivo principal de este trabajo es analizar el “diálogo” que se establece en La tía Julia y el escribidor con el Quijote a partir de la “locura” de Pedro Camacho, el escribidor de radionovelas creado por Vargas Llosa, y sus semejanzas con la del caballero andante.
Transculturación, heterogeneidad y literatura como "sistema". Aportes hacia una teoría crítica para la literatura actual
Authors: Chandía Marco 
Published: April 2022

ResumenAnte la imperiosa necesidad de dar cuenta de la compleja trama que define la producción estético-literaria contemporánea latinoamericana, surge en la década de 1950 un conjunto de propuestas sobre transculturación, heterogeneidad y literatura como sistema, producto de profundas reflexiones que el pensamiento crítico ha venido engendrando sobre el fenómeno cultural-literario. Estos métodos de interpretación de nuestra cultura-literatura, pese a haber sido pensados para contextos específicos, asumen la totalidad contradictoria del conjunto, y con ella la posibilidad de estudiar el corpus de la literatura latinoamericana actual.Palabras clave: literatura contemporánea – teoría crítica – transculturación– sistema literario AbstractIn view of the imperious need to cover the complex plot that defines the aesthetic-literary contemporary Latin American production, a set of proposals on transculturation, heterogeneity and literature as a ‘system’ arises in the decade of 1950. This is the product of deep reflections on the cultural-literary phenomenon generated by the critical thinking. Although having being thought for specific contexts, these methods of interpretation of our culture-literature assume the contradictory totality of the whole assortment and, with it, the possibility of studying the corpus of the Latin-American current literature.Keywords: contemporary literature – critical theory – transculturation – literary system
Pengaruh Media Komunikasi terhadap Kesesuaian dan Penggunaan Suplemen di Masyarakat Kota Surabaya Saat Pandemi COVID-19
Authors: Rizkia Firda Arifatu , Anugrahswari Mareta Putri , Nurhalima Nurhalima , Priyambudi Paskalis Yosna , Wirabuana Rahma Khoirunnisa , Afifah Elok Dzul , Handayani Naomi Tri , Yuwawira Abid Ananta , Nuraini Lailatul , Ramadhanty Aisyah Nabila , Achmad Gusti Noorrizka Veronika 
Published: April 2022

Pola perilaku masyarakat dalam mencari pengobatan dipengaruhi oleh faktor pengetahuan, keyakinan dan sarana kesehatan. Paparan iklan pada media komunikasi akan mempengaruhi perilaku dalam konsumsi suplemen. Adanya informasi yang tidak tepat dan tidak lengkap pada iklan obat dapat menyebabkan kesalahan penggunaan obat hingga berpengaruh pada kesehatan. Penelitian ini bertujuan untuk mengetahui pengaruh media komunikasi terhadap kesesuaian penggunaan suplemen dan peningkatan penggunaan suplemen saat pandemi COVID-19. Penelitian ini termasuk penelitian survei dengan metode analitik dan pendekatan kuantitatif yang dilakukan di Kota Surabaya dengan instrumen kuesioner yang disebarkan secara online dengan platform google form. Penelitian menggunakan teknik non-random sampling. Dalam pengujian terhadap hubungan antar variabel atau hipotesis peneliti menggunakan uji Kendall’s Tau. Hasil penelitian dari 322 responden menunjukkan tidak ada pengaruh media komunikasi terhadap penggunaan suplemen dengan p = 0,122 (α >0,05). Mayoritas responden (252 responden; 78,3%) memiliki kesesuaian penggunaan suplemen saat pandemi COVID-19 dalam hal frekuensi, jumlah, dan indikasi yang baik. Pada uji beda mengenai penggunaan suplemen didapatkan p = 0,000 (α <0,05) yang menunjukkan adanya perbedaan penggunaan suplemen sebelum dan saat pandemi COVID-19. Terdapat peningkatan konsumsi suplemen saat pandemi COVID-19. Kesimpulan pada penelitian ini adalah media komunikasi tidak berpengaruh terhadap kesesuaian dan penggunaan suplemen saat pandemi COVID-19 serta terdapat peningkatan penggunaan suplemen sebelum dan saat pandemi.
Identifikasi Pengetahuan Masyarakat Usia Produktif mengenai Obat Tradisional sebagai Imunomodulator di Masa Pandemi COVID-19
Authors: Nashrullah Muhammad , Anisah Siti Umi , Agustin Salsa Lina , Sudjaya Brenda Norton , Fathoni Muhammad Nur , Asmoro Febe Harum , Putri Angkasa Luh Karlina Febriyani , Prameswari Elsa Safira , Syahbana Muhammad Aji , Dyfianti Syarifa , Puspitasari Hanni Prihhastuti 
Published: April 2022

Coronavirus disease 2019 (COVID-19) merupakan penyakit yang menjadi krisis kesehatan dunia dikarenakan penyebarannya yang sangat cepat. COVID-19 bisa dicegah dengan kondisi imun yang baik. Imunitas yang baik juga dapat mempercepat penyembuhan pasien COVID-19. Salah satu upaya untuk meningkatkan imunitas ialah dengan menjaga pola hidup sehat. Selain itu, dapat dilakukan dengan mengkonsumsi imunostimulan yang bisa meningkatkan imunitas tubuh. Imunostimulan juga dapat diperoleh dari tanaman herbal. Tujuan penelitian ini adalah untuk mengetahui pengetahuan masyarakat usia produktif mengenai obat tradisional sebagai imunomodulator di masa pandemi COVI-19. Metode yang digunakan yaitu survei menggunakan kuesioner. Hasil survei yang dilakukan pada 133 responden menunjukkan bahwa pengetahuan responden mengenai pengertian jamu secara umum dan jamu sebagai imunomodulator masih kurang. Frekuensi konsumsi jamu selama pandemi COVID-19 lebih tinggi dibandingkan periode sebelum pandemi terutama dalam bentuk jamu racikan. Sementara itu, pengetahuan masyarakat terkait pengolahan jamu dinilai cukup.
Identifikasi Pengetahuan dan Penggunaan Mouthwash Antiseptik Herbal pada Remaja Usia 15-24 Tahun di Pulau Jawa-Madura
Authors: Lestari Dewi , Melania Imamatin Nufus , Eliyana Yunita , Savitri Erika Diah , Insani Lu’lukul Ilma Nabila , Subekti Muhammad Sultoni Fajar , Sya’baniyah Noer Halimatus , Fadhilah Nur , Nursyabania Latifa , Balbeid Saidah Usman , Sukorini Anila Impian 
Published: April 2022

Permasalahan gigi dan mulut menjadi hal yang penting untuk diperhatikan. Selain menyebabkan rasa sakit dan ketidaknyamanan, masalah gigi dan mulut juga berdampak pada penampilan seseorang. Bau mulut merupakan salah satu dari masalah gigi dan mulut yang banyak diperhatikan oleh individu terutama pada usia remaja karena dapat menurunkan rasa percaya diri. Umumnya, masalah gigi dan mulut dapat dicegah dengan menggunakan mouthwash. Ditinjau dari segi khasiat maupun potensi efek samping yang ditimbulkan, mouthwash antiseptik herbal memiliki prospek yang lebih baik dibandingkan mouthwash beralkohol. Penelitian ini bertujuan untuk mengidentifikasi pengetahuan dan penggunaan mouthwash herbal pada usia remaja (15-24 tahun). Adapun metode yang digunakan yaitu survei dengan metode sampling non-random dan analisis deskriptif. Penelitian ini menggunakan instrumen kuesioner yang disebarkan di Pulau Jawa-Madura. Diperoleh total 175 responden. Berdasarkan pengolahan data, hampir semua responden mengetahui manfaat mouthwash herbal (n=162; 93,1%). Dalam aspek penggunaan, sebagian responden kurang tepat dalam hal lama penggunaan mouthwash herbal (n=92; 52,6%). Oleh karena itu, berdasarkan hasil yang diperoleh dibutuhkan promosi kesehatan yang bertujuan untuk meningkatkan ketepatan penggunaan mouthwash antiseptik herbal sehingga diperoleh khasiat yang lebih optimal.
DEM-Based Numerical Investigation of Seismic Stability of Rock Slope in Terms of Rigid Block Displacement
Authors: Cui Zhen , Zhang Maochu , Sheng Qian 
Published: April 2022

Abstract
For the seismic behavior of a rock slope or more specifically a rock wedge, the limit equilibrium method is frequently utilized to determine the static and pseudo-static safety factor, and the Newmark method is usually applied to estimate the permanent dynamic displacement. However, the two methods are relatively complex, which negatively affects their usage in engineering practice. A new idea to analyze the static and dynamic stability of a complex rock slope was provided in this paper by combing the rigid discrete element method (DEM), shear strength reduction (SSR) method, and Newmark method. The research results show that (1) by setting the joint contact stiffness to a very large magnitude, the joint displacement caused by the reduction of joint contact stiffness during the SSR calculation process can be considered ignorable, making the contact behavior between the respective two joints approximately satisfy the rigid-plastic assumption. In this manner, it is feasible to calculate the static and pseudo-static safety factor (SF) and the permanent dynamic displacement of a rock wedge with the rigid DEM. (2) The SF and sliding forces of wedges can be directly calculated by this new method without any auxiliary assumption of motion direction or sliding type. Additionally, the new method is suitable for complex wedges, which is important to practical design. (3) The rigid DEM can be realized in 3DEC, which is testified in this paper by 5 classic static examples and 3 typical dynamic examples. (4) The effect of some important parameters, such as the excitation acceleration amplitude and dip of intersection line between two joints, on the dynamic displacement and SF under dynamic excitation was analyzed. The parameter analysis revealed that evaluating the seismic performance of a rock slope only with the pseudo-static SF would potentially underestimate the seismic displacement, under some special conditions. (5) An example case was presented in this paper that the seismic stability assessment of a block was performed with the proposed approach in terms of seismic displacement. And the slope reinforcement scheme was suggested with respect to exceedance probability. It is noted that the reinforcement scheme obtained from the rigid DEM has a better cost-saving benefit under the same SF. Overall, the knowledge gained in this paper may offer a new idea for the static and dynamic analysis to the rock slope stability.
Analyses of True-Triaxial Hydraulic Fracturing of Granite Samples for an Enhanced Geothermal System
Authors: Zhang Tao , Hu Qinhong , Chen Wenyi , Gao Yang , Li De , Feng Xiating 
Published: April 2022

Abstract
The fracturing behavior of enhanced geothermal system (EGS) reservoirs merits investigation under field-relevant temperature and stress conditions, in order to understand the creation of an extensive fracture network that helps achieve a high heat exchange efficiency. In this work, hydraulic fracturing tests were conducted on two 300 mm sized cubic granite samples at room (32°C) and field-relevant (250°C) temperatures under true triaxial compression conditions. The failure behavior and fracturing plane were studied using acoustic emission (AE) testing, μm-scale computed tomography (μm-CT), and scanning electronic microscopy (SEM), in addition to the monitoring and analyses of pressure-flow curve during fracturing. The results show that (1) at the macroscale, the strength of the granite sample was weakened at high (field-relevant) temperature, as shown by a decrease in the breakdown pressure and increase in closure pressure from the pressure-flow curve; (2) at the microscale, the failure pattern of grains during fracturing did not differ much at high and room temperatures for both intergranular and transgranular fractures; and (3) due to upscaling issues from the laboratory to field, however, the laboratory experiment will not directly provide some critical parameters (e.g., mud window pressure needed for fracture initiation and borehole failure avoidance) needed for an EGS field exploration.
Petroleum Engineering Continues To Drop, But There Is Talk of Better Times Ahead
Authors: Rassenfoss Stephen 
Published: April 2022

For the seventh year in a row, the number of undergraduates in petroleum engineering (PE) programs is down, but that could be changing.
Over the next year, Lloyd Heinze, a PE professor at Texas Tech University who has long done the survey discussed here, sees this downward trend slowing and then stabilizing in the next couple of years. There is no sure way to predict which majors undergraduates will pick, but there are some long-standing patterns to consider.
Based on past long slumps for US programs, the decline line is nearing a point where it stabilizes at a low level for years, and when the industry lives off the surge in PE graduates that occurred during the previous boom years.
But there is another trend that could change things. There has always been a strong relationship between class sizes and the preceding increases in oil price. The recent surge in oil prices to more than $90/bbl could signal a rebound, as it did early this century when it helped end the slump that dated back to the 1980s.
If those two trends apply, it could mean “there will be fewer bachelor’s degrees awarded this year, and after that we will be back to growing ever so slightly. And then 2 years from now we will be overwhelmed,” by new students, Heinze said.
So far, the survey is not offering evidence of a change from the down trend.
The best indicator of the size of future graduation classes is the level of undergraduate enrollment. During the slide down, the number of seniors has been far greater than the number of freshmen.
This year’s class shows that gap has narrowed. To stabilize it, the number of freshmen will need to far exceed the size of the senior class because another pattern is at work.
Heinze said the number of freshmen and sophomores who say they will major in petroleum engineering drops by 30% per class year as these students realize what is required, which includes proficiency in calculus.

Hiring Drives Enrollment
While it is hard to deny the power of higher oil prices to increase oil industry activity, Heinze and others in academia contacted for this story point out that the ultimate driver is the industry’s appetite for new engineers.
Students and their parents are looking for signs that the hard and costly job of getting a PE degree is rewarded with a job and a salary that justifies the effort.
So far, those in PE programs are seeing an improved job market with demand for the graduates they are supplying. When Texas A&M announced a spring job fair, there was a strong response from potential employers, said Tom Blasingame, a professor of petroleum engineering at Texas A&M and 2021 SPE president. He said the market is much improved for students seeking jobs, but it is not like the boom days when multiple offers were common.
“I do not believe that oil prices are going to help us significantly in increasing the enrollment,” said Mohan Kelkar, chairman of the McDougall School of Petroleum Engineering at the University of Tulsa, who sees oil companies sticking to conservative spending programs.
Lithium Drives EV, Grid Storage as Industry Scrambles To Fill Supply Deficit
Authors: Szymczak Pat Davis 
Published: April 2022

What fossil fuel was to the industrial revolution, lithium is to today’s energy transition.
Often referred to as the oil of the 21st century, this strategic commodity is essential to the manufacture of batteries, from the 35- to 100-kWh type that power electric vehicles (EVs) to grid-size 100-MW (and larger) battery energy storage systems (BESS) such as those at Tesla’s Gambit Energy Storage Park near Houston, whose power capacity is among the highest in the US.
Because lithium-ion batteries charge quickly and last longer due to their higher power density, it is not surprising that as the energy transition picks up the pace, the demand for lithium is rapidly outstripping supply, leaving the industry scrambling to find new sources—whether that means opening new mines or devising new technologies to extract lithium from brines, including brines found in water produced from oil and gas operations.
In the EV arena, Deloitte forecast a 29% compound annual growth rate in EV sales over this decade, predicting that EVs will comprise 32% of new car sales by 2030 with China commanding 49% of the market, Europe holding 27%, and the US at 14%.
The US Environmental Protection Agency attributes 30% of US greenhouse-gas emissions to transportation, a fact that has prompted the automobile industry to shift into transformational mode to make this decade the tipping point when EVs become mainstream.

Catching the Vibe at CES
In her keynote at the 2022 Consumer Electronics Show (CES) in Las Vegas, Nevada, in January, General Motors CEO Mary Barra announced that in 2023, GM will launch production of its long-anticipated electric Chevrolet Silverado pickup truck, a move made possible by the company’s $35-billion investment strategy announced last summer to compete with Tesla.
GM’s investment plan through 2025 targets, among other things, “on lining” four new, US-based lithium-ion cell production plants with a combined cell production capacity of 140 GWh/year, based on the company’s proprietary Ultium platform.
Ultium Cells LLC, a joint venture with LG Energy Solution, announced in late January it would build its third plant in Lansing, Michigan. The JV is currently constructing plants in Lordstown, Ohio, and Spring Hill, Tennessee; the location of the fourth plant has yet to be announced.
Back in Las Vegas, Sony grabbed headlines at CES by reaffirming it will open its own automobile unit, Sony Mobility Inc., in the spring of 2022, and Chrysler, a part of the Netherland’s Stellanis group, treated CES visitors to a look at its first EV concept car which is planned to launch in 2025.
From that standing start, Stellanis said it expects to convert 70% of its European vehicle sales and 40% of its US sales over to the EV category by 2030.
Challenges Overcome in Drilling and Testing a Deep, Deviated HP/HT Offshore Gas Well
Authors: Carpenter Chris 
Published: April 2022

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 207506, “Deepest Deviated HP/HT Gas Well Drilling and Testing Challenges on an Offshore Island: Case Study,” by Mubashir Ahmad, SPE, Ayman El Shahat, and M. Osama El-Meguid, ADNOC, et al. The paper has not been peer reviewed.
A deep deviated appraisal well in the Upper Khuff reservoir on a small artificial island approximately 100 km offshore Abu Dhabi was drilled and tested successfully. The project was driven by the goal of maximizing ultimate value and benefit for the operator, its partners, the community, and the UAE. The field is in a highly sensitive and ecologically important area and is designated a United Nations Educational, Scientific, and Cultural Organization (UNESCO) Biosphere Reserve. The complete paper presents the challenges faced and overcome while drilling and testing the high-pressure/high-temperature (HP/HT) sour offshore well.

Background
The operator has pursued the appraisal and delineation of the Arab, Khuff, and Pre-Khuff gas reservoirs in the huge offshore shallow-water field west of Abu Dhabi. During the early 1980s, in order to evaluate the field’s capability, an evaluative program was launched that involved dredging a channel and creating an artificial island, from which a test well was drilled and capped. Many wells have been drilled in the structure since, all in the northwest part of the field. Testing results have indicated impurities [including hydrogen sulfide (H2S) and carbon dioxide (CO2)] ranging from 14 to 33% in some reservoirs.