bluuebunny/crossref_metadata_2025 huggingface dataset:
Making carbon nanotube films viscoelastic, ductile and repairable by forming a double network with branched polyethylenimine
Authors: Wang Xin , Zhang Xin , Zou Jingyun , Zhao Jingna , Zhang Yongyi , Li Qingwen , Zhang Xiaohua
Published: May 2023

Manipulating nanostructure assemblies is a key to promote their applications as structural and functional materials. For carbon nanotubes (CNTs), it is absent of the ability to reconstruct their entangled network. In this work, we report a strategy to realize efficient manipulation of CNT networks by forming a double network using branched polyethylenimine. The double network is highly viscoelastic and ductile for the efficient film stretching or creeping toward high CNT alignment, which can dramatically improve the mechanical strength of CNT films. Under the viscous drag from the polymer network, CNTs show enhanced movability to reconstruct new networks, making the film repairable. A key origin of such repairability lies in the branched polymeric structure. This double-networking strategy provides a new possibility to manipulate CNT assemblies toward high-performance applications.
Cepharanthine, a regulator of keap1-Nrf2, inhibits gastric cancer growth through oxidative stress and energy metabolism pathway
Authors: Lu Yangyang , Zhu Chunyang , Ding Yixin , Wang Bing , Zhao Shufen , Lv Jing , Chen Shuming , Wang Shasha , Wang Yan , Wang Rui , Qiu Wensheng , Qi Weiwei
Published: May 2023

Cephalanthine (CEP), a bioactive compound derived from Stephania Cephalantha Hayata, is cytotoxic to various malignancies. However, the underlying mechanism of gastric cancer is unknown. CEP inhibited the cellular activity of gastric cancer AGS and HGC27 cell lines in this study. CEP induced apoptosis, reduced Bcl-2 expression, and increased cleaved caspase 3, cleaved caspase 9, Bax, and Bad expression. CEP caused a G2 cell cycle arrest and reduced cyclin D1 and cyclin-dependent kinases 2 (CDK2) expression. Meanwhile, it increased oxidative stress, decreased mitochondrial membrane potential, and enhanced reactive oxygen species (ROS) accumulation in AGS and HGC27 cells. Mechanistically, CEP inhibited Kelch-like ECH-associated protein (Keap1) expression while activating NF-E2 related factor 2 (Nrf2) expression, increasing transcription of Nrf2 target genes quinone oxidoreductase 1 (NQO1), heme oxygenase 1 (HMOX1), and glutamate-cysteine ligase modifier subunit (GCLM). Furthermore, a combined analysis of targeted energy metabolism and RNA sequencing revealed that CEP could alter the levels of metabolic substances such as D (+) - Glucose, D-Fructose 6-phosphate, citric acid, succinic acid, and pyruvic acid, thereby altering energy metabolism in AGS cells. In addition, CEP significantly inhibited tumor growth in MFC BALB/c nude mice in vivo, consistent with the in vitrofindings. Overall, CEP can induce oxidative stress by regulating Nrf2/Keap1 and alter energy metabolism, resulting in anti-ovarian tumor effects. Our findings suggest a potential application of CEP in gastric cancer treatment.
Long COVID: Plasma levels of neurofilament light chain in mild COVID-19 patients with neurocognitive symptoms
Authors: Gutman Elisa , Salvio Andreza , Fernandes Renan , Duarte Larissa , Raposo-Vedovi Jessica , Alcaraz Helena , Teixeira Milene , Passos Giselle , de Medeiros Karoline , Hammerle Mariana , Pires Karina , Vasconcelos Claudia , Leon Luciane , Figueiredo Claudia , Alves-Leon Soniza
Published: May 2023

It is well known the potential of severe acute respiratory coronavirus type 2 (SARS-CoV-2) infection to induce post-acute sequelae, a condition called Long COVID. This syndrome includes several symptoms, but the central nervous system (CNS) main one is neurocognitive dysfunction. Recently it has been demonstrated the relevance of plasma levels of neurofilament light chain (pNfL), as a biomarker of early involvement of the CNS in COVID-19. The aim of this study was to investigate the relationship between pNfL in patients with post-acute neurocognitive symptoms and the potential of NfL as a prognostic biomarker in these cases. A group of 63 long COVID patients ranging from 18 to 59 years-old were evaluated, submitted to a neurocognitive battery assessment, and subdivided in different groups, according to results. Plasma samples were collected during the long COVID assessment and used for measurement of pNfL with the Single molecule array (SIMOA) assays. Levels of pNfL were significantly higher in long COVID patients with neurocognitive symptoms when compared to HC (p = 0.0031). Long COVID patients with cognitive impairment and fatigue symptoms presented higher pNfL levels when compared to long COVID patients without these symptoms, individually and combined (p = 0.0263, p = 0.0480, and 0.0142, respectively). Correlation analysis showed that levels of cognitive lost and exacerbation of fatigue in the neurocognitive evaluation had a significative correlation with higher pNfL levels (p = 0.0219 and 0.0255, respectively). Previous reports suggested that pNfL levels are related with higher risk of severity and predict lethality of COVID-19. Our findings demonstrate that SARS-CoV-2 infection seems to have a long-term impact on the brain, even in patients who presented mild acute disease. NfL measurements might be useful to identify CNS involvement in long COVID associated with neurocognitive symptoms and to identify who will need continuous monitoring and treatment support.
Optimizing Industrial Structure to Achieve Sustainable and Low-carbon Goals for Resource Development
Authors: Xie Xin , Zhu Qisheng , Fu Hang , Hu Shanying
Published: May 2023

The development and utilization of bulk resources provide the basic material needs for industrial systems. However, the majority of the current resource utilization patterns are unsustainable. We developed a technology-based optimization model to guide sustainable and low-carbon transitions for the regional economy with complex resource endowments and selected the Qinghai saline lake region as a case study to explore the effectiveness of optimizing the regional industry structure. The results indicate that the current pattern of the Qinghai saline lake region is unsustainable with low efficiencies, high carbon emissions, and low added value, and after optimizing the industrial structure, the benefits of economic output, resource efficiency, and carbon emission reductions can be obtained. The scenario analyses exhibit disparities in the transition path from the original to the optimal industry structure. Notably, benefits from implementing carbon mitigation measures significantly exceeded the implementation of that of end-of-pipe measures. This study provides a quantitative tool for achieving sustainable and low-carbon footprint planning for regional resource-based industries.
A Zero-Shot Learning Relationship Classification Method with Semantic Pivot Regularization
Authors: Ye Zhengchun , Tang Jing , He Chunmei , Xia Yue , Li Xiuguang
Published: May 2023

Zero-shot learning (ZSL) can identify new classes by transferring semantic knowledge from seen classes to unseen classes according to the relationships between the visual and semantic features of learning. However, due to the difference of manifold distribution between visual feature space and semantic feature space, some algorithms rely too much on cross-modal mapping between semantic feature space and visual feature space, and this process lacks effective constraints. When mapping from high-dimensional visual feature space to semantic space, highly overlapping semantic attributes are generated, which leads to the problem of pivot point. In addition, there is a serious problem of domain migration in generalized zero-shot learning. In order to solve these problems, we propose the Zero-shot learning relationship method (SPR-ZSL) with semantic pivot regularization. In SPR-ZSL, semantic attributes of low-dimensional features are first mapped to visual space to alleviate the hubness problem. Then semantic pivot regularization loss is designed to guide the embedding network to learn semantic attributes to make the original semantic attributes more discriminative. Finally, the relation network is used to learn the similarity between semantic attributes and image features adaptively to complete the image classification task. The effectiveness of the proposed method is validated on five datasets for both traditional Zero-shot learning and generalized Zero-shot learning tasks. The proposed method is compared with other state-of-the-art methods, and the effectiveness is demonstrated through comprehensive analysis of the experimental results.
Expounding the Mechanism and Regioselectvity of [3+2] Cycloloaddition between N-phenylmethanimine oxide Nitrone and 2-methylene-1,3-dithiolane 1,3-dioxide
Authors: Aitouna Abdelhak Ouled , Barhoumi Ali , Zeroual Abdellah , Mohammad-Salim Haydar , Ortiz Jesus Julian
Published: May 2023

The molecular electron density theory (MEDT) framework has been used to analyze the [3 + 2] cycloaddition reaction (32CA) between 2-methylene-1,3-dithiolane 1,3-dioxide MDD-2 and N-phenylmethanimine oxide nitrone NIT-1 at the B3LYP/6-311 + + G(d,p) level of theory. The Parr functions and the energy studies clearly reveal that this reaction is extremely regioselective, which is in perfect agreement with the experimental results. This 32CA zwitter-ionic type reaction exhibits high free energies of activation between 21.23 and 23.03 kcal mol-1. By analyzing the chemical mechanism in terms of bond evolution theory (BET), which discloses a variety of fluctuations in the electron density along the reaction route, a one-step mechanism with extremely asynchronous transition states is revealed.
The Gradual Impact of Sanctioning Cartels on Market Competition: Evidence from the Colombian Manufacturing Sector
Authors: Pelaez Sergio , Gutiérrez Juan David
Published: May 2023

This paper examines the market effects of fines imposed on hard-core cartels by the Colombian competition agency. We find that the fines had a positive and gradual impact on market competition in the manufacturing sector from 2012 to 2020. This suggests that the fines deterred cartel behavior but also that some implicit agreements take time to fade away. To measure market competition, we use the complement of a Lerner index, while an indicator variable is employed to capture the differential timing and sectors of fines imposed by the agency across various industries and years. Our data sources are a manufacturing census from the national department of statistics and public records of cartel cases from the agency. Our panel data consists of 67,671 observations for 10,316 firms over nine years. We employ a difference-in-differences (DID) method with multiple periods following Callaway and Sant’Anna (2021) and conduct robustness checks using Gardner (2021) and allowing for anticipation effects.
JEL codes: K21 - Antitrust Law, L41 - Horizontal Anticompetitive Practices, L60 - Industry Studies: Manufacturing, C23 - Panel Data Models; Spatio-temporal Models, D22 - Firm Behavior: Empirical Analysis
Experimental Study of the Anisotropic Thermal Conductivity of Spruce Wood
Authors: Hu Yu-Peng , Li Wen-Bin , Wu Song , Wang Yi-Jun , Zhong Wei-Zhou , Zhang Hu
Published: May 2023

The anisotropic fibers of wood will lead to a macroscopic anisotropic property in both mechanical strength and heat transfer. Previous experimental studies of wood materials were mainly focused on the mechanical property while their anisotropic thermal property is still lacking. In this research, the anisotropic thermal performance of spruce wood is studied at different temperature, humidity and mechanical load. The one-dimensional steady-state method and the transient plane source method are adopted to conduct the test. The thermal conductivity both in-plane and outside-of-plane of spruce wood at temperature ranging from 25 to 422 ℃, relative humidity ranging from 30–90% RH and mechanical load ranging from 0 to 20 MPa are obtained. The accuracy of the TPS method is validated using the 1D steady-state method. Both methods can be utilized to gauge the anisotropic thermal conductivity of spruce wood. Due to the unidirectional distribution of fiber, spruce wood has an outside-of-plane thermal conductivity that is roughly three times greater than its in-plane thermal conductivity. Among environmental conditions of temperature, humidity and mechanical load, the thermal conductivity of spruce wood are varied with temperature more significantly, which is followed by humidity and mechanical load. The measurement uncertainty is also discussed.
The Relationship between Empathy and Listening Styles is Complex: Implications for Doctors in Training
Authors: Beheshti Amir , Arashlow Farzin Tahmasbi , Barzkar Farzaneh , Fata Ladan , Baradaran Hamid R
Published: May 2023

Background: Effective communication is the key to a successful relationship between doctors and their patients. Empathy facilitates effective communication, but physicians vary in their ability to empathize with patients. Listening styles are a potential source of this difference.
We aimed to assess empathy and listening styles among medical students and whether students with certain listening styles are more empathetic.
Methods: In this cross-sectional study, 97 medical students completed the Jefferson scale of Empathy (JSE) and the revised version of the Listening Styles Profile (LSP-R). The relationship between empathy and listening styles was assessed by comparing JSE scores across different listening styles using ANOVA in SPSS software. A p-value less than 0.05 was considered significant.
Results: Overall, the students showed a mean empathy score of 103±14 on JSE. Empathy scores were lower among clinical students compared to preclinical students. Most of the medical students preferred the analytical listening style. The proportion of students who preferred the relational listening style was lower among clinical students compared to preclinical students. There was no significant relationship between any of the listening styles with empathy.
Conclusion: Our results do not support an association between any particular listening style with medical students' empathic ability. We propose that students who have better empathetic skills flexibly shift between listening styles rather than sticking to a specific listening style.
An unusual presentation of intussusception: A case-report
Authors: Escobar Johao , Ochoa Carlos , Alvarenga Mirna
Published: May 2023

This case report discusses an unusual presentation of intussusception in an adult patient, which is a condition typically associated with the pediatric population and characterized by telescoping of one segment of the intestine into another. The patient presented with persistent lower abdominal pain, constipation, abdominal distension, and an intermittent palpable mass in the lower left quadrant. The diagnosis of intussusception was made through ultrasound and subsequent colonoscopy, which identified a submucosal mass. Further imaging with contrast-enhanced abdominal tomography revealed displacement of the proximal portion of the descending colon into the distal portion, associated with mesenteric fat displacement and reactive lymph nodes. Laparotomy was performed, and the base of the mass was found to be a lipoma, which was resected.
The article highlights that intussusception in adults is rare, with pain being the most frequent symptom. It can occur in different parts of the gastrointestinal tract and is classified based on location and cause. Small intestine intussusceptions are often malignant, while colon adenocarcinoma is the primary cause of colonic invagination.
Keyness in song lyrics: Challenges of highly clumpy data
Authors: Langenhorst Jan , Frommherz Yannick , Meier-Vieracker Simon
Published: May 2023

Computer-assisted stylistic analyses regularly employ the calculation of keywords. We show that the inclusion of a separate dispersion measure in addition to a frequency measure into keyword analysis (or more generally: keyness analysis), as proposed by Gries (2021), is a necessary extension of said analyses. Using texts from the German Songkorpus, we demonstrate that traditional keyword calculations using only frequency measures lead to spurious results. Determining keywords by both measuring a word’s frequency and its dispersion in comparison to a reference corpus gives a more realistic view. This is especially relevant for our corpus, since song lyrics turn out to be extraordinarily clumpy data: Words that are very frequent in one artist’s subcorpus typically only occur in a few or even just a single one of their songs due to widespread word repetition within songs, e.g., in choruses. Song lyrics in our dataset are shown to not feature words that can be considered key at all. Our contribution is twofold: (1) We demonstrate the utility of Gries’ (2021) approach and (2) interpret the (lack of) results in terms of a genre-specific property which is that song lyrics are lexically autonomous works of art.
Das Kompetenzmodell ITPACK-NW für die diklusive Lehrkräftebildung in den Naturwissenschaftsdidaktiken
Authors: Schroeder Rene , Fränkel Silvia
Published: May 2023

Ein diklusiver (digitaler und inklusiver) naturwissenschaftlicher Unterricht bietet spezifische Potenziale, aber auch Barrieren bezüglich der Gestaltung von Lehr-Lern-Prozessen. Im Rahmen der Lehrkräftebildung müssen diese Bedarfe zunächst einmal identifiziert und anschließend adressiert werden. Vor diesem Hintergrund analysiert der Beitrag den aktuellen theoretischen und empirischen Forschungsstand und arbeitet Leerstellen sowie Qualifizierungsbedarfe von (angehenden) Lehrkräften heraus. Dabei wird das TPACK-Modell (Technological Pedagogical Content Knowledge) vor dem Hintergrund der Bedarfe eines diklusiven naturwissenschaftlichen Unterrichts sowie der damit verbundenen Anforderungen an Lehrkräfte ausdifferenziert. Der Beitrag mündet in einer Darstellung und Erörterung des erweiterten Modells (ITPACK-NW). Das Kompetenzmodell wurde für den Kontext inklusiver Lerngruppen entwickelt und besteht aus den Elementen des inklusionspädagogischen, fachdidaktischen und technologiebezogenen Wissens sowie deren Überschneidungsbereiche. Abschließend werden Potenziale für den Einsatz innerhalb der Lehrkräftebildung und Forschung aufgezeigt.
 
Abstract
Digital and inclusive science education, referred to as "diclusive", has the potential to offer specific benefits. However, there are also barriers to designing effective teaching and learning processes. Therefore, it is essential to identify these needs in teacher education and address them accordingly. This article analyzes the current state of theoretical and empirical research to identify gaps and the qualification needs of (prospective) teachers in the context of inclusive science education. The TPACK model (Technological Pedagogical Content Knowledge) is discussed in light of the needs of inclusive science education and the associated requirements for teachers. The article concludes with a presentation and discussion of the extended model, ITPACK-NW. This competency model is developed specifically for the context of inclusive learning groups and includes elements of inclusive education, subject didactics, and technology-related knowledge, as well as their overlapping areas. Finally, the article highlights the potential use of ITPACK-NW in teacher education and research.
Teachers’ perceptions of the impact of teenage pregnancy on learners’ academic performance: a case of selected schools in South Africa
Authors: Mashuhlane Komape , Segalo Letlhoyo , Ngobeni Tsakane
Published: May 2023

The purpose of this study was to investigate and describe the negative impact of teenage pregnancy on learners’ academic performance in one district of education in South Africa. Teenage pregnancy was argued in the literature as the main source contributor to learners’ low academic performance, especially in disadvantaged schools in South Africa. For example, teenage pregnant learners missed classes owing to absenteeism as they will be visiting clinics. Their performance rate fluctuates as this depends on their periodic mood swing, which they experience from time to time. In some cases, these teenage pregnant learners drop out of schools. The study followed a qualitative research approach where purposive sampling was employed to select two educators per institution from three selected schools. Pseudonyms were used to protect the participants from being known and encouraged them to participate freely. Trustworthiness and ethical considerations were adhered to. Open-ended questions were prepared and administered to the selected educators to find out the impact of teenage pregnancy on scholastic performance.

The study findings established that a sense of knowledge and respect of rights need to be promoted since these pregnant learners have the right to education and must receive the same education as other non-pregnant learners. The study, reported on this paper, further recommends that all stakeholders should discourage teenagers from watching television with sexual content that might tempt them to engage in sexual activities that can lead to teenage pregnancy, which will end up affecting their academic performance.
Learning through radio and television during COVID-19: perspectives of K-12 stakeholders
Authors: Ayanwale Musa Adekunle , Adewuyi Habeeb Omoponle , Afolabi Olakunle Waheed
Published: May 2023

The COVID-19 pandemic has disrupted traditional education, leading to the adoption of alternative methods, such as learning through radio and television for K-12 students. Television and radio became popularly adopted platforms to disseminate educational resources during the pandemic in developing countries, such as Nigeria. This study gathers the perspective of K-12 teachers and students during the crisis to find out the effectiveness of the utilized platforms, examine the challenges encountered, and suggest the way forward in case of future occurrence. The concerns-Based Adoption Model (CBAM) guided the study. A qualitative methodology of interpretivism was employed using 20 participants that comprise students and teachers across the five south-western states in Nigeria. Findings show that teachers adapted their lessons to be delivered through broadcasts, while school administrators have worked closely with broadcasters to develop and implement educational content. Students have had mixed experiences, with some finding radio and television engaging, while others face challenges with engagement and adaptability. In essence, the result shows that most of the respondents though acknowledged the effectiveness of the radio and television approach to learning but opined that the lessons are not detailed enough. Furthermore, educational television broadcast is preferable to radio lessons as the visual effect contributes significantly to learning. The study concludes that broadcasters have played a critical role in delivering educational content, partnering with schools, and developing programs that align with the curriculum during the pandemic. The study discussed its implication, followed by limitations, and gave direction for future studies.
Customer relationship management systems for customer retention in a life insurance organisation in South Africa
Authors: Twum-Darko Michael , Abrahams Raafiq
Published: May 2023

By examining the role and value of customer retention (CR) in the life insurance sector of the South African insurance industry, this paper seeks to uncover the level of clientele receptiveness and willingness to adopt Information Technology (IT)-based Customer Relationship Management (CRM). Arguably, there are changing client needs, and market erosion requires innovative processes and particularly a readiness to accommodate the swift changes in technology. This volatile environment has, over the past decade, created increased competition and uncertain economic futures, which has placed life insurers under pressure and facing a steady increase in policy lapses. The primary objective of this paper is to investigate the role and value of IT-based CRM potential on customer retention in the life insurance industry in South Africa. It is argued, that with technological advances, increased competition, tough economic conditions, and clients becoming more financially conscious, insurers need to seek further and newer methods to retain their clientele. The study applied a quantitative research methodology by administering existing structured questionnaires to 100 clients at a Walk-in-Centre of a major life insurance company in South Africa to examine the causal link between IT-based CRM and customer retention. The survey concluded that probing unchartered terrain is required in fluctuating times for insurers to be competitive. The implication of the findings is that the speed, at which technology is evolving, is compelling insurers to evaluate new and alternative means of managing client relationships, as clients now drive the economy, not businesses. The very essence of a good CRM programme is its reliance on an IT system innovation, which is advanced enough to analyse the captured client data, transform that data into usable knowledge, which is then used to drive client retention. Explain who will be interested in the findings and why they should care about them. This paper contributes to the understanding, and implementation, of a successful IT-based CRM tool within the life insurance industry
The influence of family stru cture on children's academic achievement: evidence from some selected secondary schools in Oyo State, Nigeria
Authors: Adeyeye Gbenga Michael
Published: May 2023

Studies into the elements that influence students' academic progress have drawn the interest and concern of teachers, counsellors, psychologists, researchers, and school officials in Nigeria. The foundation of society is the family, which is generally understood as a couple raising their children or a group of individuals living under one roof and typically under one head. Every family is thought to want their children to do well in school. However, a lot of elements, such as economic pressure, lead families to lose interest in their children's academic endeavours. The study aimed to investigate the relationship between secondary school students' academic achievements and their family structure in Oyo State, Nigeria. A structured questionnaire was utilised for the study to collect data because it helped the researcher found to standardise data collection, categorise data for statistical analysis and collect data at a lower administrative cost. Descriptive and correlational approaches were also applied. Correlational design helps identify the relationship between two variables, while the descriptive design accurately describes the events as they actually occur. Therefore, it was possible to establish a connection between the type of family and the pupils' academic performance. One-way ANOVA was used as the statistical tool to analyse the data. This decision was taken after running the descriptive analysis of the dependent variables. According to the study's findings, family structure and their socioeconomic position, parenting, and upbringing affects pupils' academic achievements in secondary schools in Oyo State, Nigeria. Also, family structure affects parental support, class concentration, and the self-esteem of students. Additionally, there is a correlation between students' academic success in secondary schools in Oyo State, Nigeria and the family structure. The study findings indicate that the provision of basic needs (food, shelter, and clothing), mental wellbeing, adequate economic resources, harmony in the parents' relationship, and soundness of the parent-child relationship were significantly influencing the academic performance of students in secondary schools in Oyo State, Nigeria
Development of the recipe for cookies with pumpkin flour
Authors: Liubych Vitalii , Novikov Volodymyr , Zheliezna Valeriia , Koval Halyna , Tryhub Oleh , Belinska Svitlana , Tverdokhlib Olena , Honcharuk Yuliia , Kolibabchuk Tetyana , Pykalo Serhii
Published: May 2023

The object of research is the technology of enriching shortbread cookies with pumpkin flour. The problem of enriching shortbread cookies with pumpkin flour was solved.

In the studies, different replacement of wheat flour with pumpkin flour was studied according to the following scheme: 0 %, 5 %, 10 %, 15 %, 20 %. The formation of strength, the ratio of the mass to the volume of the cake, its volume to the mass, the degree of swelling and sensory evaluation of the cookies were studied. As a result, it was established that the addition of pumpkin flour to the shortbread cookie recipe had a significant (р≤0.05) effect on its quality indicators. The strength of cookies and the ratio of its mass to volume increased with the addition of pumpkin flour. The degree of swelling and the ratio of the volume of cookies to mass decreased compared to the version without pumpkin flour. The use of pumpkin flour significantly changed the sensory indicators of cookie quality. The smell of cookies decreased from 9.0 to 3.7 points. The taste of cookies – from 9.0 to 3.0 points. Using it in the recipe reduces the volume of cookies, which reduces the degree of swelling and the ratio of its mass to volume. In addition, pumpkin flour has a specific smell and taste, which negatively affects the sensory evaluation of cookies. Therefore, the higher its content in the recipe, the worse the quality of the cookies.

A distinctive feature of the obtained results is the use of 5 % pumpkin flour in the cookie technology. With this recipe, the strength is 1.45 kg, the degree of swelling is 1.70, the ratio of cookie mass to volume is 0.65, cookie volume to mass is 1.53. The color of the surface of the cookies is light brown, the color of the crumb is yellow, the pores are small, thin-walled, uniform, the consistency is crumbly. Smell is 8.3 points, taste – 9.0 points.

The developed recommendations can be used by enterprises of low productivity for the production of shortbread cookies
An objective collapse model without state dependent stochasticity
Authors: Mertens Lotte , Wesseling Matthijs , van Wezel Jasper
Published: May 2023

The impossibility of describing measurement in quantum mechanics while using a quantum mechanical model for the measurement machine, remains one of its central problems. Objective collapse theories attempt to resolve this problem by proposing alterations to Schrödinger’s equation. Here, we present a minimal model for an objective collapse theory that, in contrast to previous proposals, does not employ state dependent stochastic terms in its construction. It is an explicit proof of principle that it is possible for Born’s rule to emerge from a stochastic evolution in which no properties of the stochastic process depend on the state being evolved. We propose the presented model as a basis from which more realistic objective collapse theories can be constructed.
MOTIVATION, STRESS, AND EXPERIENCES IN FLEXIBLE LEARNING: EFFECTS ON STUDENTS PERFORMANCE IN PHYSICAL EDUCATION
Authors: B. Salagantin , LPT , MAEd Elvin
Published: May 2023

Education has always been a salient factor in a persons life. Both internal and external factors contribute to its enhancement and its diminishment. Even when the pandemic hit the whole world, education never ceased the government and its education departments immediately shifted to a Flexible mode of teaching and learning. In the Philippines, the Commission on Higher Education (CHED) created a policy that ensures learning continuity amidst the pandemic. Drawn from this situation, this study determined the relationship between motivation, stress level, and experiences in Flexible Learning to the performance of students in PE 4. The study utilized a descriptive correlational design to check whether there is a relationship between variables. Moreover, the study used multiple linear regression and inferential statistics to treat the data gathered in the survey. The study showed that the variables, namely motivation, and stress, have no significant relationship with the participants PE 4 performance. In comparison, the learning experiences significantly positively relate to PE 4 performance. Moreover, learning experiences were found to be the variable that best influences PE 4 performance. Based on the studys findings, conclusions were drawn that motivation and stress do not affect the students performance in PE 4. At the same time, the learning experience predicted the students PE 4 performance significantly.
mitos familiares sobre la enfermedad mental. Una metáfora sobre la posición subjetiva de las participantes
Authors: Trujillo Jaramillo Stephany , Maya Rendón Anthony Douglas
Published: May 2023

Resumen:

El presente ensayo, es el resultado de la investigación Mitos Familiares sobre la Enfermedad Mental, realizada en el marco del curso Trabajo de Grado II para optar por el título de Psicólogos. La pregunta que guió nuestra investigación es ¿Cuáles son los mitos sobre la enfermedad mental en dos generaciones de una familia en la que uno de sus integrantes presenta enfermedad mental? Nos fundamentamos en el Psicoanálisis y la Psicología Analítica para la interpretación de los resultados de respuesta. La investigación se realizó desde un diseño metodológico cualitativo, y un enfoque fenomenológico de tipo descriptivo a través de un estudio de caso. Se utilizó como instrumento de recolección de información el Dibujo Cinético de la familia en el presente, y el Dibujo Cinético de la familia en el pasado, al igual que la narrativa conversacional con entrevista semiestructurada.  Las personas participantes de la investigación son dos mujeres adultas, madre e hija, donde esta última fue diagnosticada con enfermedad mental en algún momento de su vida.  Del proceso investigativo se concluye que el mito familiar sobre la enfermedad mental es la debilidad “un algo que solo les ocurre a personas débiles de carácter”, sin embargo, este mito se ha transformado, porque la enfermedad mental en la familia es vista actualmente como un medio para la adquisición y dotación de cualidades, como un algo que fortalece el alma.
Abordaje teórico y metodológico de la violencia psicológica en relaciones de pareja: un estado del arte
Authors: Jaramillo Correa Laura Carolina , Echavarría Zapata Daniela , Gómez Vargas Maricelly
Published: May 2023

El presente artículo tiene como objetivo identificar los conceptos y metodologías empleados para prevenir e intervenir la violencia psicológica en las relaciones de pareja. Este estado del arte, está enmarcado en un enfoque hermenéutico y de tipo cualitativo, se hizo un análisis categorial de documentos publicados entre 2009 y 2020 en bases de datos académicas como Scielo, Dialnet, Scopus, Science Direct y APA Psynet. Las categorías fueron: definición de violencia psicológica, bases teóricas y metodologías empleadas para su evaluación, prevención y tratamiento. Entre los resultados, se destaca la ausencia de una definición consensuada de esta modalidad de violencia, un sinnúmero de conductas presentes en ella, y algunas hipótesis que explican cómo se origina y mantiene; además de varios instrumentos y estrategias de evaluación, y algunas metodologías que combinan principios de la prevención y la psicoterapia. Se recomienda elaborar tanto definiciones como planteamientos teóricos explicativos más afines al contexto y población objeto de estudio, y propender por realizar trabajos multidisciplinarios.
Bienestar psicológico y consumo de sustancias psicoactivas en adultos jóvenes del Quindío
Authors: Castillo Jaramillo María José , Zúñiga Gómez Sofía , Benavides Ponce Magda Fernanda , Berrío García Nathaly
Published: May 2023

El consumo de Sustancias Psicoactivas (SPA) es una problemática que por años ha generado afectaciones en los ámbitos individual y colectivo, contribuyendo al aumento en las cifras de problemáticas psicosociales y de salud. El objetivo del estudio fue establecer la relación entre el bienestar psicológico y el consumo de SPA en 97 personas de 18 a 25 años del departamento del Quindío. Para ello, se implementó un diseño transversal con alcance correlacional. Los datos se recolectaron mediante la Prueba de Detección de Consumo de Alcohol, Tabaco y otras Sustancias y la Escala del Bienestar Psicológico de Ryff. Se identificó que la mayoría de los participantes se ubicaron en un nivel alto en la mayoría de las dimensiones de la escala de bienestar. El 91,75% de los participantes consumieron alguna sustancia, a lo largo de su vida. Finalmente, se encontró una relación entre la preocupación por otros por el consumo de tabaco y el bajo nivel de autonomía (-0,3144, p < 0,01), y el intento por dejar el consumo alcohol y bajo nivel del dominio del entorno (-0,3275, p < 0,01).
A New Molecularly Imprinted Polymer for In-Tube SPME/UHPLC-MS/MS of Anandamide in Plasma Samples
Authors: Pinto Mônia , de Souza Israel , Miranda Luis Felippe , Queiroz Maria Eugênia
Published: May 2023

Parkinson’s disease is a neurodegenerative disorder characterized by progressive loss of dopaminergic neurons. There is substantial evidence that the endocannabinoid system modulates the dopaminergic activity in the basal ganglia, a forebrain system that integrates cortical information to coordinate motor activity regulating signals. In this article, a fused-silica capillary with a molecularly imprinted polymer was developed for in-tube solid-phase microextraction of the endocannabinoid anandamide in plasma samples from Parkinson’s disease patients and further analysis by ultra-high-performance liquid chromatography with tandem mass spectrometry. The molecularly imprinted polymer capillary presented recognition sites with complementary shape, size, and functionality to anandamide. Scanning electron micrographs and Fouriertransform infrared spectra illustrated the physical and chemical modification of the printed and non-printed capillary surface. The in-tube solid-phase microextraction ultra-high-performance liquid chromatography with tandem mass spectrometry method presented a linear range from 0.1 to 20 ng mL-1, precision with coefficient of variation values ranging from 1.2 to 13%, and relative standard deviation accuracy ranging from -3.6 to 7.5%. The method developed herein can adequately determine anandamide in plasma samples from Parkinson’s disease patients. By applying the standard addition approach, the anandamide plasmatic concentration in these samples was found to range from 0.2 to 0.4 ng mL-1.
Stochastical computation methods and experimental designing
Authors:   St. Petersburg State University, Ermakov Sergei M. , Melas Vyacheslav B. ,   St. Petersburg State University
Published: May 2023

This paper contains a brief review of the most important results obtained by the staff of the department of statistical modeling. Results include mathematical justification of computer simulation of randomness, stochastic methods of solving equations, stochastic optimization, study of stochastic stability and parallelism of Monte-Carlo algorithms. In the area of experiment planning, special attention is paid to regression experiment under nonlinear parameterization. The list of references mainly includes monographs written by members of the department. The exceptions are some articles with results not included in them.
Lp-norm approximation of Holder functions by harmonic functions on some multidimensional compact sets
Authors:   Herzen State Pedagogical University of Russia, Pavlov Dmitriy A.
Published: May 2023

In this paper we consider the class of H¨older functions in the sense of Lp norm on certain compacts in Rm (m >= 3) and prove theorems on approximation by functions harmonic in neighborhoods of these compacrs. These compacts are a generalization to the higher dimensions of the concept of chord-arc curve in R3. The size of the neighborhood decreases along with an increase in the accuracy of the approximation. Estimates of the approximation rate and the gradient of the approximation functions are made in the same Lp-norm.
Fixed point theorem via measure of non-compactness for a new kind of contractions
Authors:   Sultan Moulay Slimane University, Touail Youssef , Jaid Amine ,   Sultan Moulay Slimane University, El Moutawakil Driss ,   Sultan Moulay Slimane University
Published: May 2023

In this paper, we will use the notion of α-admissible mappings in Banach spaces, to introduce the concept of Tβ-contractive mappings and establish a fixed point theorem for this type of contractions. Our theorems generalize and improve many results in the literature. Moreover, we apply the main result to prove the existence of a solution for Volterra-integral equation, under more general assumptions than previously made.
Finite deformations of a bilayer dielectric nonlinear elastic anisotropic tube under an electric field
Authors:   Southern Federal University, Kolesnikov Alexey M. ,   Don State Technical University, Letunova Daria A. ,   Southern Federal University,   Lomonosov Moscow State University
Published: May 2023

In this paper the problem of finite deformations of a dielectric tube under the action of an electric field is considered. The tube consists of two layers, each spirally reinforced with fibres. The angles of the fibres in each layer are different. On the inner and outer surfaces of the tube and between the layers are flexible electrodes. The electric field is induced by applying voltage to the first or second layer, i. e. either to the electrodes on the inner side surface and between the layers, or to the electrodes between the layers and on the outer side surface. A simple model of an electroactive anisotropic incompressible material is considered in the analysis. The potential energy function is represented by the sum of the energy of the isotropic matrix in Gent form, the simplest electrical component and the energy of the reinforced fibres. Using a semi-inverse method, the static problem of the three-dimensional body is reduced to integral equations with respect to the tube deformation parameters: the radius of the outer layer, the multiplicity of longitudinal elongation and the twist angle. The influence of layer thickness on tube deformation under quasi-static increase of voltage is investigated. The purpose of this work is to determine the thickness of the layers at which the application of voltage to the different layers will cause the tube to twist in different directions.
On opto-thermally excited parametric oscillations of microbeam resonators. I
Authors:   St. Petersburg State University, Morozov Nikita F. ,   Institute for Problems of Mechanical Engineering of the Russian Academy of Sciences, Indeitsev Dmitriy A. ,   Institute for Problems of Mechanical Engineering of the Russian Academy of Sciences,   Peter the Great St Petersburg Polytechnic University, Lukin Alexei V. ,   Peter the Great St Petersburg Polytechnic University, Popov Ivan A. ,   Peter the Great St Petersburg Polytechnic University, Shtukin Lev V. ,   Institute for Problems of Mechanical Engineering of the Russian Academy of Sciences,   Peter the Great St Petersburg Polytechnic University
Published: May 2023

The present article is the first part of the work devoted to investigation of the nonlinear dynamics of parametrically excited flexural vibrations of a clamped-clamped microbeam - the basic sensitive element of a promising class of microsensors of various physical quantities - under laser thermooptical action in the form of periodically generated pulses acting on a certain part of the surface of the beam element. An analytical solution of the heat transfer problem is found for the steady harmonic distribution of temperature in the volume of the resonator. The static and dynamic components of temperature-induced axial force and bending moment are determined. Using the Galerkin method, the discretization of nonlinear coupled partial differential equations describing the longitudinal-flexural oscillations of the resonator is performed. Using the asymptotic method of multiple time-scales, an approximate analytical solution is obtained for the nonlinear dynamics problem under the conditions of primary parametric resonance.
Numerical modeling of hydrodynamic accidents: Erosion of dams and flooding of territories
Authors:   Volgograd State University, Khrapov Sergey S.
Published: May 2023

A mathematical and numerical model of the joint dynamics of surface water and traction sediment is built, which takes into account the nonlinear dynamics of fluid and bottom deformation. The dynamics of surface waters is described by the equations of Saint-Venant, taking into account the spatially inhomogeneous distribution of the terrain. The transport of sediment loads is described by the nonlinear Exner equation, generalized to the case of a spatially inhomogeneous distribution of the parameters of the underlying surface. For the numerical integration of the Saint-Venant and Exner equations, a stable and well-tested CSPH-TVD method of the second order of accuracy is used, the parallel CUDA algorithm of which is implemented as a software package “EcoGIS-Simulation” for high-performance computing on supercomputers with graphic coprocessors (GPU). Hydrodynamic modeling of the processes of erosion of the enclosing dam of a real hydraulic facility and flooding of adjacent territories has been carried out. The parameters of the penetration of the enclosing dam and flooding zones, formed as a result of the development of a hydraulic accident at the tailing dump, have been determined. Based on the results obtained, it was concluded that the proposed method for numerical modeling of the joint dynamics of surface water and traction sediment can be more universal.
Current Evidence on Dietary Factors and Kidney Allograft Function in Kidney Transplant Recipients: A Systematic Review
Authors: Nosrati-Oskouie Mohammad , Salavatizadeh Marieh , Ghorban Sabbagh Mahin , Aghili-Moghaddam Nazanin Sadat , Tarighat-Esfanjani Ali , Sahebkar Amirhossein
Published: May 2023

Background:

Currently, there is no accounted-for consensus and practical standard
when counseling diet modification for kidney transplant recipients (KTRs). There are many differences
between transplant centers regarding what KTRs are needed to follow a diet, what dietary factors
and supplements are allowed, and how long KTRs should follow a modified diet. Relatively
few scatter data are available for dietary factors in KTRs. Thus, we aimed to systematically review
the literature on the purported dietary factors for kidney function.

Methods:

A systematic literature search was performed between February and March 2022 and updated
in February 2023 using PubMed, Scopus, Web of Science, and Google Scholar. We included
human observational and interventional studies that evaluated a dietary factor on kidney function
and graft survival in KTRs. Data were extracted, and the risk of bias was assessed using established
tools relevant to the study design.

Results:

Of the 5341 citations retrieved, seven prospective cohorts, five cross-sectional, seventeen
randomized, and ten non-randomized clinical trials were included that evaluated seven purported dietary
factors. Almost half of the studies (n = 22; 56%) were classified as having a low degree of
bias and sufficient support. Twenty-one studies (54%) reported a positive effect on KTRs. DASH
and Mediterranean diets decreased graft failure, low-sodium diet reduced blood pressure, and antioxidants
improved creatinine, GFR, and graft function. Of these, only twelve studies (31%) were
at low risk of bias.

Conclusion:

Some dietary factors, including DASH, Mediterranean, moderate protein, and low--
sodium diet, as well as antioxidants, may be associated with improved survival and kidney function
in KTRs. However, more research is needed.