bluuebunny/crossref_metadata_2025 huggingface dataset:
Calculation on maximum output power of wave energy-PTO system
Authors: Rong Qingyuan
Published: April 2024

The energy conversion efficiency of wave energy device is one of the key problems in the large-scale utilization of wave energy. The study of the maximum output POWER of PTO (Power-Take-Off) system provides a theoretical reference for the efficient utilization of energy. In this paper, genetic algorithm and adaptive differential evolution algorithm based on neighborhood search are used to optimize the two-objective multi-order differential equations for the maximum output power of PTO system, and the global optimal solution is obtained. Compared with the traversal algorithm, the algorithm involved in this paper is efficient and the optimal output power obtained can provide a scientific basis for the structural optimization design and material selection of the wave energy device.
Creep analysis and service life prediction of turbine blade with progressive damage
Authors: Qiu Zhijun , Zhang Hongyang , Liu Donghuan , Liu Zhen , Li Jun
Published: April 2024

Creep failure is one of the dominate failure mode for high temperature turbine blade during service. Under the tensile stress caused by large centrifugal force of the blade and the thermal stress and thermal softening of the material, the displacement as well as the creep strain and damage increase gradually. The present paper firstly gives the temperature field of the blade under typical service condition with numerical modelling. Then Norton’s creep constitutive relation and Lemaitre-Chaboche damage model are introduced into the finite element model, and three different working conditions are considered here to investigate its effect on creep service life of the turbine blade. Numerical results show that, the proposed numerical approach can predict the evolution of the creep process and the damage. Meanwhile, the introduction of cyclic factor is capable of reflecting the fatigue effect of cyclic load.
Modal analysis and vibration response test of tank body
Authors: Kong Lili , Cheng Xinghao
Published: April 2024

In order to ensure the safety and stability of the oil tank in the transportation process, the dynamic response of the tank body was simulated, tested and optimized based on the finite element method and vibration testing technology. The modal vibration modes were calculated respectively under the conditions of 50 %, 75 % and 100 % liquid filling of the oil tank, and the influence of the oil content on the overall structure mode was obtained. Under the full load condition, the stress response under continuous and non-continuous impact loads was calculated. Based on the analysis results, the vibration damping elements were arranged, and the optimization effect of vibration reduction was verified and analyzed by vibration testing. The results show that full load is more conducive to the stability of the oil tank, and the vibration damping element can reduce the maximum amplitude by more than 80 %, which has good economic and social benefits.
In-cylinder pressure and vibration analysis on port fuel injected gasoline engine
Authors: Sann Samnang , Tomeh Elias
Published: April 2024

Research on knocking combustion is vitally essential since it impacts engine performance regarding noise and emissions, fuel consumption, power density, and durability. Because of end-gas auto-ignition, current SI engines may experience conventional knock, which restricts increasing the compression ratio to increase thermal efficiency. Therefore, this paper examined the in-cylinder pressure and vibration of a port fuel-injected gasoline engine under knocking and non-knocking conditions. The heat release rate was calculated from pressure traces where the crank angle resolutions were not constant, and the conversion from the time domain to the frequency domain of knock sensor signals by using the Fourier Transform was performed. The result reveals that more heat is released during knocking combustion than during non-knocking combustion. When there is a knock, the temperature variation increases. This would facilitate the use of heat transfer studies to detect knock occurrences. Moreover, knocking is caused by an ignition timing that is too advanced, 22°BTC, compared to the non-knocking spark case, 14°BTC. In the frequency domain, the amplitude of the knocking combustion is higher than the amplitude of the non-knocking combustion, indicating the engine’s noise and vibration.
Static test of T800 carbon fiber reinforced polymer (CFRP) wing-box
Authors: Chen Chao , Hu Botao
Published: April 2024

This paper studies static test methods and test loads of Carbon Fiber Reinforced Polymer (CFRP) wing-box, analyzes the test results, and compares the test results of T800 CFRP wing-box from HENGSHEN Co., LTD and TORAY. It comes out that the stiffness of the T800 CFRP wing-box from HENGSHEN is equivalent with that of TORAY, while the strength meets the structural design requirements, which can be applied on the scheduled aircraft structure for further verification.
Simulation experiment on support strength of aircraft structural components
Authors: Chen Chao , Hu Botao
Published: April 2024

The design principles of strength test support methods for aircraft structural components were introduced in this paper. Aiming at the vertical tail static test of a certain type of aircraft, a supporting stiffness simulation method was invented, and a support fixture was designed. The supporting stiffness was accurately simulated by stiffness strength. The research results of this paper provide an important reference for the research of static test support methods for similar aircraft structural components.
Encapsulated polyphenols in functional food production
Authors: Bobrysheva Tatyana , Anisimov Georgy , Zolotoreva Marina , Evdokimov Ivan , Budkevich Roman , Muravyev Alexandr
Published: April 2024

Polyphenols are present as nutrient components in many functional food formulations. However, their bioavailability is quite low, and they tend to degrade under extreme technological conditions, e.g., heating, pH, etc. Moreover, polyphenols are known for their specific bitter taste. As a result, a large amount of polyphenols spoils the sensory properties of the finished product. Encapsulation seems a prospective solution to this problem. This article provides a comprehensive review of scientific publications on various methods of polyphenol encapsulation.

The review covered publications registered in PubMed, Google Scholar, ResearchGate, Elsevier, eLIBRARY.RU, and Cyberleninka in 2002–2023 with a focus on original research articles published after 2012. The search involved such keywords as polyphenols, encapsulation, flavonoids, delivery systems, and functional products.

Encapsulating materials are made of organic or inorganic substances, as well as of their combinations. Mineral salts delay the contact between polyphenols and taste buds. However, they are not resistant enough to gastric juice. In this respect, organic matrices are more effective. Carbohydrates protect active molecules from degradation in the stomach. Liposomes increase the bioavailability of polyphenols. Milk or whey proteins also proved quite effective for a number of reasons. First, they mask the astringent taste, which makes it possible to include more polyphenols in functional food formulations. Second, the resulting product is fortified with valuable proteins and essential amino acids. Third, high concentrations of polyphenols possess enough antioxidant properties to increase the shelf-life.

Polyphenol encapsulation is an effective method of functional product design, especially in the sphere of foods made for dietary nutrition, sports, preventive diets, etc.
Microplastic inhibits the sorption of trichloroethylene on modified biochar
Authors: Lu Hainan
Published: April 2024

Biochar (BC) was used to remove trichloroethylene (TCE) from soil and water phases, and BC modification changed the sorption behavior of pollutants. Microplastics are emerging pollutants in the soil and water phases. Whether microplastics can affect the sorption of TCE by modified BC is not clear. Thus, batch sorption kinetics and isotherm experiments were conducted to elucidate the sorption of TCE on BC, and BC combined with polyethylene (PE) or polystyrene (PS). The results showed that HCl and NaOH modification increased TCE sorption on BC, while HNO3 modification inhibited TCE sorption on BC. When PE/PS and BC coexisted, the TCE sorption capacity decreased significantly on BC-CK + PE, BC-HCl + PE, BC-HNO3 + PE, BC-NaOH + PE, and BC-NaOH + PS, which was likely due to the preferential sorption of PE/PS on BC samples. We concluded that microplastics can change TCE sorption behavior and inhibit TCE sorption on BC samples. Thus, the interaction of BC and microplastics should be considered when BC is used for TCE removal in soil and water remediation.
An improved method for isotopic and quantitative analysis of dissolved organic carbon in natural water samples
Authors: Li Yuhong , Wang Mingshi , Zhang Dong
Published: April 2024

A wet chemical oxidation (WCO) method has been widely used to obtain the dissolved organic carbon (DOC) content and carbon isotope (δ13CDOC) ratios. However, it is sometimes difficult to get high precision results because not enough CO2 was oxidized from the natural water samples with low DOC concentrations. This improvement primarily aims to increase the water sample volume, improve the removal rate of dissolved inorganic carbon (DIC), and minimize the blank DOC from the standard solution. Following the improved procedure, the δ13C ratios of standardized DOC solutions were consistent with their actual values, and their differences were less than 0.2‰. The improved method demonstrated good accuracy and stability when applied to natural water samples with DOC concentrations ≥0.5 mg L−1, with the precisions of DOC concentrations and δ13C ratios were better than 0.07 mg L−1 and 0.1‰, respectively. More importantly, this method saved much pre-treatment time and realized batch processing of water samples to obtain their DOC contents and isotope ratios.
Pro- and Anti-inflammatory Biomarkers Responses after Aerobic Training
in Heart Transplant Recipients: A Systematic Review and Meta-analysis
Authors: Franzoni Leandro Tolfo , da Motta Stephanie Bastos , Carvalho Gabriel , Costa Rochelle Rocha , Ahner Mabel Marciela , Saffi Marco Aurélio Lumertz , Pereira Alexandre Araújo , Pereira Adamastor Humberto , da Silveira Anderson Donelli , Stein Ricardo
Published: April 2024

Background:

Physical exercise (PE) may improve plasma concentration of interleukin-
6 (IL-6), tumor necrosis factor-alpha (TNF-alpha), and adiponectin (adpN) in heart transplant
(HT) patients. However, no consistent data is available on this population.

Aim:

Thus, we aimed to conduct a systematic review and meta-analysis on the effects of PE
over these pro- and anti-inflammatory biomarkers in HT patients.

Methods:

Following the guidelines established by the Preferred Reporting Items for Systematic
Reviews and Meta-Analyses (PRISMA) 2020 statement, we conducted a systematic literature
search in the PubMed, Cochrane, and Scopus databases. Outcomes included IL-6, TNF-alpha,
and adpN. Effect size (ES) was calculated using the standardized mean difference with a 95%
confidence interval (CI).

Results:

The PE group (aerobic modality) was associated with reduced IL-6 compared to the
control group (ES: −0.53; 95% CI: −0.99 to −0.06 pg/mL; P = 0.026). However, the PE group
did not show a significant effect on TNF-alpha and adpN levels (ES: −0.33; 95% CI: −0.79 to
0.13; P = 0.16 and ES: −0.20; 95% CI: −0.70 to 0.30 pg/mL; P = 0.444, respectively).

Conclusion:

PE is associated with IL-6 reductions, although TNF alpha and adpN did not
change after this intervention in HT patients. Therefore, PE is an effective intervention to downregulate
IL-6 in post-HT patients.
WITHDRAWN: Mechanism and Research Progress of Agarwood in Improving Recurrent Oral Aphthous Ulcer and Ulcerative Colitis
Authors: Guo Xiang , Sunchuri Diwas , Guo Zhu-Ling
Published: April 2024

The article has been withdrawn at the request of the corresponding author of the journal The Natural Products Journal.

Bentham Science apologizes to the readers of the journal for any inconvenience this may have caused.

The Bentham editorial policy on article withdrawal can be found at https://benthamscience.com/pages/editorialpolicies-main

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Evaluation of service quality and quality of financial information service system on customer satisfaction
Authors: Wulandari Fatmah Eka , Handoko Trio , Darsono Darsono
Published: April 2024

The objectives to be obtained from the results of this research are: 1) To measure and test the influence, both partially and simultaneously, of knowledge of Service Quality and FSA Financial Information Service System(FISS) Information Quality on Customer Satisfaction at the Solo FSA Office. 2) To find out the factors that have the most dominant influence on Customer Satisfaction at the FSA Solo Office. This research was conducted on approximately 100 FSA Solo Office customers in January. Then 50% or 50 customers were taken to be used as samples. The research results found that both partially and simultaneously there was an influence of Service Quality and FSA FISS Information Quality on Customer Satisfaction at the Solo FSA Office. From the two independent variables, it is known that Service Quality has the most dominant influence on Customer Satisfaction at the FSA Solo Office. The overall research concludes that there is a joint positive and significant influence between Service Quality and FSA FISS Information Quality on Customer Satisfaction at the FSA Solo Office.
Hypothetical Learning Trajectory of Sector Area and Arc Length Using the Clockwork Context
Authors: Salsabila Ellis , Hajizah Mimi Nur
Published: April 2024

Students' understanding on the concept of a circle especially the relationship between central angle, arc length, and sector area of the circle based on learning obstacle and learning trajectory need to be developed well by creating a good didactic design. Therefore, it is necessary to design hypothetical learning trajectories (HLT) for students in learning sector area and arc length using the clockwork context. The didactical design was developed through three stages, namely: (1) the preliminary design; (2) teaching experiment; and (3) retrospective analysis. This study focused on the first stage, since the main purpose of this research was to develop a series of learning activities to delve into the concept of sector area and arc length as proportional problem in the form of HLT. The HLT was designed using a realistic mathematics education (RME) approach. There are three anticipated learning obstacles in the design of the activities, including errors related to the concept of the relationship between arc length, circle circumference, sector area, and circle area; errors related to the concept of the relationship between the central angle, arc length, and sector area of a circle; as well as errors related to the connection of concepts in circle material with other mathematical material; and students' difficulties in problem solving questions.
Zmiany w rolnictwie Mazowsza w latach 2002–2020
Authors: Ogniewska Marta , Macierakowska Justyna
Published: April 2024

Artykuł jest syntezą opracowania przygotowywanego w Mazowieckim Biurze Planowania Regionalnego w Warszawie (MBPR) mającego na celu zbadanie zmian jakie zaszły w ostatnich kilkunastu latach w rolnictwie i na obszarach wiejskich województwa mazowieckiego. Badanie przeprowadzone zostało głównie na podstawie Powszechnych Spisów Rolnych z lat 2002 i 2020. Objęto nim, możliwe do porównania, zagadnienia charakteryzujące rolnictwo i obszary wiejskie Mazowsza, poświęcając szczególną uwagę problematyce wykształconych na Mazowszu specjalizacji rolniczych związanych z produkcją roślinną i zwierzęcą, przeobrażeń w strukturze agrarnej gospodarstw rolnych, czy zmian w strukturze użytków rolnych regionu. Poruszono również wybrane zagadnienia odnoszące się do ludności zamieszkującej tereny wiejskie, w tym dotyczące rynku pracy, procesów demograficznych. Próbowano ustalić, czy w trakcie kilkunastu analizowanych lat nastąpiły istotne przeobrażenia w tych dziedzinach. W artykule przedstawiono i omówiono przestrzenny rozkład badanych zagadnień i tendencji zarysowujących się w rolnictwie regionu, uzupełniając je, w miarę potrzeb, uwagami metodycznymi. Artykuł został wzbogacony licznymi rycinami obrazującymi wyniki przeprowadzonych analiz. Głównym źródłem informacji wykorzystywanych w opracowaniu są dane Głównego Urzędu Statystycznego prezentowane w Banku Danych Lokalnych (głównie wg siedziby gospodarstwa) , analizy ujęte w opracowaniu Zmiany w rolnictwie Mazowsza w latach 2002–2010 wydanym w ramach serii Mazowsze. Analizy i Studia, a także inne publikacje i materiały branżowe. Przeprowadzona analiza jest elementem monitorowania polityki rozwoju rolnictwa i obszarów wiejskich Mazowsza, wyrażonej w głównych dokumentach strategicznych województwa, tj. Strategii rozwoju oraz Planie zagospodarowania przestrzennego województwa. Wyniki analiz dokonanych w ramach opracowania mogą być pomocne podczas konkretyzacji i weryfikacji prowadzonej polityki regionalnej. Słowa kluczowe: rolnictwo, zmiany w rolnictwie, użytki rolne, użytkowanie gruntów, struktura agrarna, ludność wiejska
Eficacia de Polipodium leucotomus en pacientes pediátricos con Xeroderma Pigmentoso
Authors: Alvarez - Montiel Iris , Félix Rivera Maria
Published: April 2024

El Xeroderma pigmentoso (XP), es una Geno dermatosis fotosensible a la radiación ultravioleta. Produce daño
irreparable al Ácido Desoxirribonucleico (ADN) favoreciendo la carcinogénesis. El Polypodium leucotomos
(PL) disminuye la mutación del ADN, mejora la carcinogénesis e inmunosupresión al conservar las células de
Langerhans. No existen estudios del uso del PL en pacientes con XP. Nuestro objetivo fue evaluar la eficacia
del PL al comparar la incidencia de cáncer y mejorar la inmunosupresión en pacientes pediátricos con XP mediante las diferencias en la medición células de Langerhans (CD1a). Se realizó un estudio prospectivo, cuasi
experimental de un brazo, en 8 pacientes pediátricos con diagnóstico clínico de XP en Hospital María Especialidades Pediátricas (HMEP) en Tegucigalpa, Honduras (agosto 2017 - agosto 2018). Se proporcionó PL 7.5
mg/kg en 2 dosis por 1 año y se realizaron 2 mediciones separadas durante este tiempo. Se encontraron diferencias significativas en las mediciones de las células de Langerhans antes (A) y después (B) del uso del PL. La
administración oral de PL demostró eficacia en pacientes pediátricos con XP, ya que conserva las células de
Langerhans, mejora la inmunosupresión y disminuye la carcinogénesis; por lo que podría considerarse una alternativa terapéutica preventiva y paliativa en los pacientes con XP.
Palabras claves: células de Langerhans, Polypodium leucotomus, Xeroderma Pigmentoso
Measuring the digital behavior for health purposes of the Garifuna community in Atlántida, Honduras
Authors: Agudelo-Santos Carlos , Zablah Isaac
Published: April 2024

Historically, the Garifuna community has been relegated to northern Honduras. The access indicators for the
behavior in telecommunications services of this ethnic group are not known in depth. A sample has been
chosen to study variables such as hours of use of computers and mobiles, the monthly budget for telecommunications services, and characterization of complementary final services, especially the behavior and digital knowledge from the intersection of technology together with an aspect of common knowledge among
the Garifuna, which in this case is proposed to carry out the analysis to be able to encourage and promote
health in terms of the prevention of sexually transmitted diseases (STD). Data were collected electronically
using an instrument between January and May 2022. In the behavior and knowledge of digital technologies,
basic statistics have been used to analyze quantitative data, but an unstructured text analysis algorithm has
been used, together with graph theory, to find the relationships between the terms used by the participants.
The result has been widespread access to telecommunications services, but there is also low knowledge of
the basic concepts associated with these technologies.
Keywords: Digital behavior; Garifuna; algorithm; ICT; mobile services
Exploring the Implementation of Shared Decision-Making Involving Health Coaches for Diabetes and Hypertension Self-Management: Qualitative Study
Authors: Yoon Sungwon , Tan Chao Min , Phang Jie Kie , Liu Venice Xi , Tan Wee Boon , Kwan Yu Heng , Low Lian Leng
Published: April 2024

Background

An emerging focus on person-centered care has prompted the need to understand how shared decision-making (SDM) and health coaching could support self-management of diabetes and hypertension.

Objective

This study aims to explore preferences for the scope of involvement of health coaches and health care professionals (HCPs) in SDM and the factors that may influence optimal implementation of SDM from the perspectives of patients and HCPs.

Methods

We conducted focus group discussions with 39 patients with diabetes and hypertension and 45 HCPs involved in their care. The main topics discussed included the roles of health coaches and HCPs in self-management, views toward health coaching and SDM, and factors that should be considered for optimal implementation of SDM that involves health coaches. All focus group discussions were audio recorded, transcribed verbatim, and analyzed using thematic analysis.

Results

Participants agreed that the main responsibility of HCPs should be identifying the patient’s stage of change and medication education, while health coaches should focus on lifestyle education, monitoring, and motivational conversation. The health coach was seen to be more effective in engaging patients in lifestyle education and designing goal management plans as health coaches have more time available to spend with patients. The importance of a health coach’s personal attributes (eg, sufficient knowledge of both medical and psychosocial management of disease conditions) and credentials (eg, openness, patience, and empathy) was commonly emphasized. Participants viewed that addressing the following five elements would be necessary for the optimal implementation of SDM: (1) target population (newly diagnosed and less stable patients), (2) commitment of all stakeholders (discrepancy on targeted times and modality), (3) continuity of care (familiar faces), (4) philosophy of care (person-centered communication), and (5) faces of legitimacy (physician as the ultimate authority).

Conclusions

The findings shed light on the appropriate roles of health coaches vis-à-vis HCPs in SDM as perceived by patients and HCPs. Findings from this study also contribute to the understanding of SDM on self-management strategies for patients with diabetes and hypertension and highlight potential opportunities for integrating health coaches into the routine care process.
Using Smartphones to Enhance Vision Screening in Rural Areas: Pilot Study
Authors: Wang Zheng , Kempen John , Luo Gang
Published: April 2024

Background

While it is treatable, uncorrected refractive error is the number one cause of visual impairment worldwide. This eye condition alone, or together with ocular misalignment, can also cause amblyopia, which is also treatable if detected early but still occurs in about 4% of the population. Mass vision screening is the first and most critical step to address these issues, but due to limited resources, vision screening in many rural areas remains a major challenge.

Objective

We aimed to pilot-test the feasibility of using smartphone apps to enhance vision screening in areas where access to eye care is limited.

Methods

A vision screening program was piggybacked on a charity summer camp program in a rural county in Sichuan, China. A total of 73 fourth and fifth graders were tested for visual acuity using a standard eye chart and were then tested for refractive error and heterophoria using 2 smartphone apps (a refraction app and a strabismus app, respectively) by nonprofessional personnel.

Results

A total of 5 of 73 (6.8%, 95% CI 2.3%-15.3%) students were found to have visual acuity worse than 20/20 (logarithm of minimal angle of resolution [logMAR] 0) in at least one eye. Among the 5 students, 3 primarily had refractive error according to the refraction app. The other 2 students had manifest strabismus (one with 72–prism diopter [PD] esotropia and one with 33-PD exotropia) according to the strabismus app. Students without manifest strabismus were also measured for phoria using the strabismus app in cover/uncover mode. The median phoria was 0.0-PD (IQR 2.9-PD esophoria to 2.2-PD exophoria).

Conclusions

The results from this vision screening study are consistent with findings from other population-based vision screening studies in which conventional tools were used by ophthalmic professionals. The smartphone apps are promising and have the potential to be used in mass vision screenings for identifying risk factors for amblyopia and for myopia control. The smartphone apps may have significant implications for the future of low-cost vision care, particularly in resource-constrained and geographically remote areas.
Portable ECG Machine with Future Prediction
Authors: Nagdive Arundhati
Published: April 2024

Abstract: Approximately thirty percent of people live in poverty in rural areas. The difficulty of limited access to nursing and diagnostic services stems from the outdated healthcare infrastructure. As a result, when heart failure strikes, people frequently neglect to get help and make use of the resources that are accessible. A study suggests a smart electrocardiogram (ECG) monitoring system for heart patients based on the Internet of Things to address these problems. The ECG sensing network (data gathering), IoT cloud (data transmission), result analysis (data prediction), and monetization are the various components that make up the system.
Garage Wala: Transforming India\'s Automobile Service Landscape Through Digital Innovation
Authors: Kukreja Dr. Mansi , Gupta Aniket , Mukesh Kalathiya Zeel , Choudhary Sidharth , Noor Mohammad Ayaan , Khazin Ibrahim , Kumar Ashutosh
Published: April 2024

Abstract: This study explores the transformative potential of Garage Wala, a burgeoning entrepreneurial venture in the automobile service industry, designed to bridge the gap between vehicle owners and service providers in India. Garage Wala's innovative business model, predicated on the seamless integration of digital technology with traditional car repair services, aims to offer unprecedented convenience, quality, and reliability to vehicle owners. This research paper delves into the genesis of Garage Wala, examining its strategic response to the burgeoning demand for accessible, trustworthy, and efficient automobile maintenance services in an era marked by rapid urbanization and the proliferation of vehicle ownership. Through qualitative and quantitative analyses, the paper assesses Garage Wala's market positioning, operational strategies, and the sustainability of its business model in the face of evolving consumer preferences and intense competition. Drawing on the latest industry data, the study highlights the critical role of digital platforms in enhancing service accessibility, fostering consumer trust, and streamlining operations within the automobile service sector. Furthermore, it evaluates the challenges and opportunities presented by the Indian market's unique characteristics, including regulatory hurdles, the informal economy's prevalence, and the increasing emphasis on environmental sustainability. The findings underscore the potential of platforms like Garage Wala to redefine automotive service paradigms, contributing to a more organized, customer-centric, and sustainable industry landscape in India. This research not only provides valuable insights for academics and practitioners but also offers strategic recommendations for similar start-ups navigating the complexities of the Indian market.
Analytical Solution of Equations Governing Aligned Plane Rotating Magnetohydrodynamic Fluid Through Porous Media by Martin’s Method
Authors: Birendra Birendra Kumar Vishwakarma , Sil Sayantan , Kumar Manoj
Published: April 2024

This investigation is an approach to setup an analytical solution of steady plane allied MHD fluid flow having infinite electrical conductivity in a rotating frame through porous media by Martin’s method. The governing non-linearequations of the fluid flow are transformed into a new form called Martin’s form by employing differential geometry where the curvilinear co-ordinates (Φ, Ψ) in the plane of flow shows that, the co-ordinate lines Ψ are the streamlines of flow and the co-ordinate lines Φ are arbitrary constants. Exact solution is obtained and velocity,vorticity, current density magnetic field and pressure distribution are found out. Also, the diagrams have been plotted to sketch the streamline patterns and to study variation of pressure function with angular velocity.
Educação e direitos humanos em tempos de resistência
Authors: Rodríguez Alfredo Johnson , Vaz Aline Choucair , Siqueira Camila Zucon Ramos de , Ferreira José Heleno , Rena Luiz Carlos Castello Branco , Debian Ruan
Published: April 2024

"Aqui o leitor encontrará cento e cinco textos organizados em quatro seções conforme o ano em que foram publicados: 2019, 2020, 2021 e 2022 que coincidem com os quatro anos de ocupação do Estado por aqueles e aquelas que afrontaram as instituições democráticas, negaram a ciência, atacaram a educação, espalharam inverdades e desmontaram as políticas de promoção, proteção e defesa dos Direitos Humanos. Neste contexto sócio-histórico, o esforço coletivo de pensar e publicar sobre o lugar da educação no resgate e reafirmação do direito de ter direitos foi de fundamental importância." Luiz Carlos Castello Branco Rena
Evolution of energy and the transformation of man in Russian and foreign utopias
Authors:   HSE University (Russia, Moscow), Grigorovskaya A. V.
Published: April 2024

The article analyzes the relationships between the sources of energy and of human culture in Russian and foreign utopias. The author considers the main way of correlation between the evolution of energy and anthropological evolution, which involves their mutual influence. Utopian texts demonstrate this interdependence quite clearly. Technological stagnation is combined with the totalitarian structure of society in the early utopias: in texts by Plato, Thomas More, Tommaso Campanella (in Francis Bacon’s utopia it is the pursuit of modernization). Bacon’s model is reproduced in the novel Andromeda Nebula by the Soviet writer Ivan Yefremov, however, the discovery and the implementation of innovative energy sources in this utopia is accompanied by a qualitative change of human beings and society. In Ayn Randʼs novel Atlas Shrugged the motif of the “perpetuum mobile” is organically combined with the motif of human transformation. Nikolai Chernyshevsky also wrote about the “perpetuum mobile”: in his stories he emphasized the inextricable link between “energy” and “anthropology”. Analysis of current trends in the development of this topic (as seen, for example, in Kim Stanley Robinsonʼs novel The Ministry for the Future) allows us to conclude that totalitarian narratives in utopia are being revived. These totalitarian narratives impose on humankind the inevitability of rapid energy transition.
“American Lectures” by Italo Calvino as commentary on the novels Invisible Cities and If on a Winter’s Night a Traveler
Authors:   Russian State University for the Humanities (Russia, Moscow), Saburova L. E. ,   Α. M. Gorky Institute of World Literature of Russian Academy of Sciences (Russia, Moscow)
Published: April 2024

“American Lectures” (Six Memos for the Next Millennium) are well established in the minds of readers as a testament of Italo Calvino addressed to posterity. The course of lectures prepared by the writer for delivery at Harvard University in 1984 was the last work from his pen. In his last book, Calvino identifies several features of literature that are of particular value. Thanks to their mind-stimulating cognitive functions, these features, according to the writer, will help future generations cope with the dangers that are inherent in the language of media with its vague concepts and in visual promotional images that clog our imagination. “American Lectures” not only allow us to look at the history and theory of literature from an unexpected angle, but also shed light on Calvino’s own creative path. The reflections contained in the lectures are primarily related to the search for new mechanisms for creating a literary work, which occupied the writer in his last, “combinatorial”, period. In his lectures, Calvino reflects on speed, which is equivalent to agility, mobility, ease of storytelling, which above all are characteristic of oriental fairy tales. Calvino’s novels Invisible Cities and If on a Winter’s Night a Traveler are like The Thousand and One Nights thanks to a frame composition capable of accommodating a potentially infinite number of inserted short stories. As in The Thousand and One Nights, in the novel Invisible Cities the plot of the frame is built on the relationship between the narrator and the ruler. By contrast, in If on a Winter’s Night a Traveler the engine of the plot is the art, borrowed from Scheherazade, of interrupting the story at the climax of the unfolding plot. In addition, according to the ideas contained in the lectures, a large form made up solely of beginnings actualizes the potential of the novel as a genre that concentrates its power precisely at the beginning of the narrative. Both novels considered here are in line with the writer’s experiments with the form of “map-novel” or “hyper-novel”, capable of accommodating a potentially unlimited number of images and plot combinations.
The mouse, the snake, and the devil’s collar: Soviet symbols in the memory of Old Believers of the Upper Kama region
Authors:   Russian State University for the Humanities (Russia, Moscow), Khristoforova O. B.
Published: April 2024

The Soviet project of creating the “new man” included the construction of a collective memory which was not only a legitimate version of the past, but also a repository of cultural values, and the background or space for celebrating Communist rituals. The project itself was rather uniform, but had multiple local incarnations that were determined mostly by the ethnic and religious identity of the local population. The Old Believers’ communities of the Russian North shared with the rest of the country symbols of the past, sites of memory, and commemorative rituals. Still, local perceptions of the Communist regime and its symbols depended in this milieu on a variety of factors: first, the high literacy rate of the deeply religious Old Believers, as well as their erudite knowledge of Christian, and specifically Old Russian literature; second, the very critical attitude toward Soviet power; and third, local beliefs. This article analyzes the process of adaptation of the Communist project to Old Believers’ persistent religious and cultural traditions and seeks to explain how Communist symbols symbiotically coexisted with hostile local attitudes and why they even survived the collapse of the regime. Mutual adjustment of the imposed Communist project and the local symbolic language took many decades, yet finally, by the end of the Soviet era, when three or four generations had seen no other reality than that they were surrounded by, the strong rejection of this reality was smoothed out, everyday tensions mostly disappeared, and the earlier alienation itself became part of collective memory on both family and community levels. The article is based on interviews with Old Believers of the Upper Kama region (Verkhokamie), conducted by the author in 2011 and 2013.
A RARE CASE OF TRIFOCAL RADIUS FRACTURE
Authors: Chung Lim Tin , Didi Indra Faris Indra Prahasta , Ibrahim Mohd Anuar Ramdhan
Published: April 2024

Trifocal fracture of a radius is a rare injury. Trifocal factures involving the shaft of a radius were previously mentioned in a few literature. This type of fractures, involving proximal, shaft, and distal radius with ulna shaft fracture, has also been reported once. However, to the best of our knowledge, our report is the first describing trifocal injuries affecting the shaft and proximal and distal intraarticular part of the radius with an intact ulna shaft. Thorough clinical and radiological assessments are necessary for diagnosis as these injuries are commonly missed. We would like to share the presentation of this rare case and the importance of the correct management to achieve a good outcome.
THE ROLE OF POINT-OF-CARE-OCULAR ULTRASOUND IN TRAUMATIC EYE INJURY
Authors: Baihaqi Oon Muhammad , Rahman Nik Hisamuddin Nik Ab. , Abdull Wahab Shaik Farid , Fauzi Mohd Hashairi
Published: April 2024

Ocular trauma remains a significant cause of eye blindness. Disruption or violation of the globe's integrity can lead to an ocular emergency that usually jeopardises the vision. Early identification of this condition can fasten the management process to give the patients the best and most appropriate treatment. We described the role of point-of-care ultrasound (POCUS) in diagnosing globe rupture in the Emergency Department.
ANTI-ADIPOGENIC EFFECT OF ELATERIOSPERMUM TAPOS ON 3T3-L1 CELLS
Authors: Thiagarajan Siroshini , Perumal Kokilavani , Bahari Hasnah , Abidin Azrina Zainal , Segran Balan Santhra
Published: April 2024

Obesity is defined as an excessive fat accumulation that causes metabolic syndrome such as diabetes, hypertension, and abnormal cholesterol levels. Adipocytes are a major part of the adipose tissue that grows the abnormal lipid droplets which leads to fat accumulation. In modern drugs, treating obesity without any side effects is challenging. Natural products such as plants and herbs are widely used to cure obesity. Natural products are safer because of their reduced toxicity and infrequent negative effects. This study focuses on examining the potential anti-adipogenesis effects of Elateriospermum tapos on 3T3-L1 cells. The extracts from both seed and shell of the fruit were extracted using hot, cold and ethanol extraction. The extracts were tested for the cytotoxicity on 3T3-L1 cells and on zebrafish embryo in vivo. Zebrafish study on heartbeat, heart rate and scoliosis formation, shell extract show less toxic compared to seed extract. This shell extracts showed a positive correlation determination of R2 = 0.96. Therefore, shell extracts were used to indicate the maximum non-toxic dose (MNTD) of each extraction. The lowest MNTD was observed in ethanol extract at 5.2 ± 0.01 µg/mL, hot extract at 7.6 ± 0.25 µg/mL and cold extract at 8.1 ± 0.31 µg/mL. Oil Red O staining to determine the amount of lipid accumulation showed a significant (P < 0.05) decrease of 70% when compared to adipocytes when treated with ethanol shell extract, and a significant (P < 0.05) decrease of 60% by hot shell extract. With the reduction in lipid accumulation, lipolysis was measured by accounting the amount of glycerol produced. The highest production of glycerol was significant when treated with hot shell extract at 42 mg/L, followed by cold extract at 38 mg/L. This is concluded that the hot shell extract has potential to curb obesity by reducing lipid accumulation through lipolysis at a maximum non-toxic dosage.
FACTORS INFLUENCING HIV/AIDS PREVENTIVE MEASURES AMONG INJECTING DRUG USERS IN MAKASSAR CITY
Authors: Hanike Nisrina , Arsin A. Arsunan , Muis Masyita , Amiruddin Ridwan , Bustan Nadjib , Masni Masni , Mumang Andi Agus
Published: April 2024

Human Immunodeficiency Virus (HIV) is a serious infection that attacks the body's immune system, and its means of transmission include the use of injecting drugs. Effective preventive measures are crucial for reducing the prevalence of HIV in society. Therefore, this study aims to determine the factors influencing HIV/AIDS preventive measures among injecting drug users (IDUs) in Makassar City. A cross-sectional study design was employed, and 124 IDUs were enrolled as participants through an accidental sampling technique. The data collected were analyzed with chi-square bivariate analysis and multivariate logistic regression. The results showed knowledge (p-value = 0.005), attitude (p-value = 0.013), peer influence (p-value = 0.004), support from health workers and NGOs (p-value = 0.029), availability of sterile injecting equipment services (p-value = 0.029), and voluntary counseling and testing (VCT) services were significantly correlated with the preventive measures among IDUs in Makassar city (p-value < 0.001). Furthermore, VCT services were found to be the most influential factor in HIV/AIDS preventive measures (OR = 6.369; 95%CI = 2.181-18.597; p-value = 0.001). In conclusion, knowledge, attitudes, peer influence, support from health workers and NGOs, the availability of sterile injecting equipment services, and VCT services have a relationship with HIV/AIDS preventive measures among IDUs. Participants who engaged in VCT are advised to disseminate information about HIV and the associated services to their partners and communities.
Regional databases demonstrate macroecological patterns less clearly than systematically collected field data
Authors: Kerr Matthew , Currie Nicole , Kosnik Matthew , Alroy John
Published: April 2024

The analysis of macroecological patterns has necessitated the use of
large, composite datasets recording local-scale species occurrences
distributed across the globe. These datasets, however, have various
spatial and temporal biases. They have rarely been compared to data
collected in the field across large spatial gradients. In this paper we
use two datasets built from online repositories plus a standardised
field collection to reconstruct macroecological patterns for marine
bivalves along the eastern coastline of Australia – spanning over 20°
of latitude. We test the strength of the latitudinal diversity gradient
using four diversity measures and identify a biogeographical boundary.
The field collection demonstrates a strong latitudinal gradient, but
mixed support was found in the composite datasets. Worse, adding
observation-based records to the composite dataset obscured the
latitudinal gradient. The biogeographic boundary was consistently found,
and the location mirrored two previously published bioregionalisations.
Although broad patterns seen in the field can be uncovered from
composite macroecological datasets, care both in dataset construction
and choice of methods is needed to ensure robust results.
COMPARABILIDADE DAS INFORMAÇÕES EM IFRS:
Authors: Oliveira Deyvison de Lima , Hiroshi Nakao Sílvio , José Rech Ilírio
Published: April 2024

A comparabilidade da informação financeira é uma das características qualitativas previstas nos padrões internacionais. Estudos têm sinalizado que essa característica pode estar ausente até entre entidades de um mesmo segmento ou com um mesmo tipo de ativo, em função das escolhas contábeis permitidas pelas normas de contabilidade. Assim, a presente pesquisa tem o objetivo de analisar a comparabilidade das escolhas contábeis entre semelhantes na evidenciação de ativos florestais. Os dados foram coletados manualmente das demonstrações financeiras e notas explicativas em dois períodos (48 relatórios), de três países da América Latina (Brasil, Argentina e Chile). A metodologia usada foi a análise de conteúdo para cada escolha contábil evidenciada nas demonstrações financeiras e notas explicativas. Os resultados sinalizam reduzido grau de comparabilidade da informação financeira, especialmente, em função da ausência de informações sobre cada escolha ao longo do tempo. Verificou-se diversidade de opções adotadas pelas empresas para apresentação das florestas e dos ganhos/perdas divulgados nas demonstrações financeiras. As limitações na comparabilidade da informação financeira entre entidades que operam ativos idênticos sob IFRS, ancoradas na excessiva generalidade na norma, sugerem a necessidade de aprimoramentos no padrão IAS 41.
DIFERENÇA ENTRE LUCRO CONTÁBIL-FISCAL
Authors: BATISTELLA ANA JULIA , DAL MAGRO CRISTIAN BAÚ , MAZZIONI SADY
Published: April 2024

O objetivo do estudo é verificar a influência do board interlocking (BI) de banqueiros e políticos na diferença entre o lucro contábil e fiscal de empresas listadas na Brasil Bolsa Balcão – B3. A amostra da pesquisa considerou 1.157 observações, correspondentes ao período de 2011 a 2018. Os dados foram tratados pela regressão linear múltipla. Os resultados indicam que o BI, por si só, não interfere na diferença entre o lucro contábil e fiscal. Entretanto, a presença de BI de políticos influencia para que as empresas priorizem os aspectos fiscais do resultado. O achado permite aceitar a hipótese de que o BI formado por políticos reduz a diferença entre os lucros contábil e fiscal. Por outro lado, a presença de BI de banqueiros influencia para que as empresas priorizem os aspectos societários do resultado. O achado permite aceitar a hipótese de que o BI formado por banqueiros aumenta a diferença entre os lucros contábil e fiscal. A investigação fornece indícios para os acionistas avaliarem a pertinência de manter no conselho de administração membros com expertises específicas e interconectados, considerando o tipo de divulgação desejada pelos stakeholders.
FACHADAS ORGANIZACIONAIS E DIVULGAÇÃO VOLUNTÁRIA DO GUIDANCE
Authors: Arantes Vagner Alves , Souza Franciele Machado de , Gusmão Ivonaldo Brandani
Published: April 2024

O objetivo deste estudo é analisar as fachadas organizacionais recorrentes nos relatórios de guidance das empresas investigadas nas operações Carne Fraca, Lava Jato e Zelotes da Polícia Federal. Questionam-se os reflexos das investigações da Polícia Federal nas fachadas organizacionais nos relatórios de guidance das empresas investigadas. O universo da pesquisa é formado pelas empresas que divulgaram o guidance entre 2010 e 2020 e que foram objeto de denúncia de investigação naquelas operações sob o comando da Polícia Federal. Utilizou-se da técnica da análise de conteúdo sob a perspectiva da teoria da hipocrisia organizada, materializada pelo uso das fachadas organizacionais. Verificou-se que as empresas utilizaram as três fachadas organizacionais: Racional, Progressista e de Reputação. A variabilidade de fachadas encontradas está associada às investigações promovidas pela Polícia Federal uma vez que impactam a imagem da empresa frente ao mercado e, consequentemente, podem influenciar a reputação e a forma como é percebida pelos investidores. As evidências encontradas sugerem que esse cenário parece ser ideal para a construção e adoção de tipos alternativos de fachadas organizacionais que podem mascarar comportamentos, omissões e/ou situações adversas. Os resultados permitiram inferir sobre como uma empresa pode utilizar a divulgação corporativa para gerenciar as percepções dos stakeholders. Essas evidências empíricas contribuem para o desenvolvimento da literatura sobre como a empresa pode utilizar-se da divulgação do guidance para gerenciar as percepções dos stakeholders a partir de denúncias de corrupção de investigação por parte da Polícia Federal.