bluuebunny/crossref_metadata_2025 huggingface dataset:
Coping strategies and psychological distress among mothers during COVID-19 pandemic: The moderating role of social support
Authors: Lubis Fitriani Yustikasari , Abidin Fitri Ariyanti , Qodariah Laila , Anindhita Vidya , Purba Fredrick Dermawan
Published: April 2024

The Indonesian government implemented a large-scale social restriction policy as part of the efforts to tackle the COVID-19 pandemic. This policy impacted the population, including mothers, and caused considerable psychological distress. Individual efforts to cope (avoidant and approach coping strategies) and support from significant persons might help handle the distress experienced by mothers. The purpose of this empirical study is to investigate the effect of individual coping strategies on psychological distress and the moderating role of social support among Indonesian mothers. An online survey was administered from 20th to 25th April 2020 to 1534 Indonesian mothers (Mean age 37.12 years; SD 6.63). Brief COPE (28 items), Depression Anxiety Stress Scale/DASS (18 items), and the Multidimensional Scale of Perceived Social Support/MSPSS (12 items) were used to measure coping strategies, psychological distress, and social support, respectively. IBM SPSS 24 software was used to analyze the data. The result showed that moderate and high levels of social support moderated the relationship between approach coping strategies and psychological distress (B = .041, CI .007-.075). When the mother uses approach coping, her psychological distress will decrease further whenever she receives moderate and high level social support. Any level of social support moderated the relationship between avoidant coping and psychological distress (B = -.100, CI -.138—.061). When mother used avoidant coping, her social support at any level served as buffer to her psychological distress. It can be concluded that mothers need to prioritize implementing approach coping strategies to lower their distress. Those who practiced avoidant coping strategies needed social support from their significant persons to decrease their distress.
Socioeconomic differences in digital inequality among Chinese older adults: Results from a nationally representative sample
Authors: Hu Hongchao , Xu Wenqian
Published: April 2024

The current study seeks to investigate digital inequality among older adults in China, specifically examining two socially defined age groups: young-old adults (aged 60–74) and old-old adults (aged 75+). Descriptive statistics and multiple regression were used to examine the prevalence of and identify the factors associated with Internet access, usage (frequency and breadth containing 11 activities), skills, and social support. The study used data from the 2018 China Longitudinal Ageing Social Survey (CLASS) which consisted of 11,419 respondents aged 60 years and older. We found that 40.22% of older adults had access to the Internet, and 18.27% used it regularly. Socioeconomic factors played a crucial role in determining Internet access and usage, with young-old adults with higher education using the Internet more frequently, deliberately, and competently. Those with higher economic status had greater social support to use it, and the old-old adults with higher socioeconomic status were more likely to have Internet access. This study has implications for prioritizing targeted policies and interventions aimed at supporting socioeconomically disadvantaged older adults and ensuring equal opportunities for all to access and benefit from the digital world.
Partial herd hoof trimming results in a higher economic net benefit than whole herd hoof trimming in dairy herds
Authors: Waldbauer Marlena , Spackman Eldon , Barkema Herman W. , Pajor Edmond A. , Knauss Sebastian , Orsel Karin
Published: April 2024

Sole ulcers, a common cause of lameness is the costliest non-infectious foot lesion in dairy cows and one of the most prevalent non-infectious foot lesions in freestall housing systems. Costs associated with sole ulcers are treatment costs, plus increased labor and decreased productivity and fertility. Routine hoof trimming is part of a strategy to manage sole ulcers. However, hoof trimming strategies differ among farms. The two most frequently applied strategies are: 1) partial herd hoof trimming with a 2-month interval between trims; and 2) whole herd hoof trimming at 6-month intervals. A Markov model was developed to investigate whether every 2 months partial herd hoof trimming or whole herd hoof trimming every 6 months was the most cost-effective strategy to avoid costs associated with sole ulcers. In this model, the net benefits for a 100-cow herd and the average productive life span of a dairy cow in intensive dairy systems of 3 years were evaluated. Partial herd hoof trimming was the most cost-effective strategy 100% of the time compared to whole herd hoof trimming, with a difference in 3-year net benefits of US$4,337 (95% CI: US$2,713—US$5,830). Based on sensitivity analyses, variables that were the sources of the biggest uncertainty in the model were herd size, the probability of being trimmed in a partial herd trim, and the prevalence of sole ulcers. To further investigate the impacts of herd size and of probability of being trimmed, various scenario analyses were conducted. With increasing herd size, the difference in net benefits in favor of partial herd hoof trimming increased even more. Scenario analyses about the probability of getting trimmed all indicated that targeted intervention increased the difference in net benefits in favor of partial herd hoof trimming. However, if the selection of cows to be trimmed in a partial herd trim was random, the whole herd hoof trimming strategy became cost-effective. Therefore, targeted selection and early intervention are necessary to decrease costs associated with sole ulcers.
Association between illness perception and social alienation among maintenance hemodialysis patients: The mediating role of fear of progression
Authors: Zhu Beisha , Wu Hang , Lv Siyu , Xu Yulan
Published: April 2024

Purpose

This study aimed to investigate the mediating role of fear of progression on illness perception and social alienation among maintenance hemodialysis (MHD) patients.

Background

MHD is frequently accompanied by increased pain and complications such as itchy skin, chronic fatigue, and muscle spasms. Cardiovascular disease rates are also elevated among MHD patients, which can heighten their anxiety regarding prognosis and treatment discomfort. This chronic fear may severely impact social functioning, leading patients to withdraw from interpersonal interactions and experience heightened helplessness and loneliness. Further investigation is necessary to understand the factors behind the high level of social alienation in MHD patients and their underlying mechanisms.

Design

A cross-sectional study guided by the STROBE.

Methods

A convenience sample of 230 MHD patients were enrolled from January to May 2023. Data including demographic and clinical characteristics, illness perception, fear of progression, and social alienation were collected. Descriptive analysis and Pearson correlations were conducted using IBM SPSS version 25.0. The mediating effect was analyzed using Model 4 of the PROCESS macro for SPSS, with the Bootstrap method employed to assess its significance.

Results

The score of social alienation in MHD patients was high, with illness perception and fear of progression both significantly correlated with social alienation. In the mediating effects model, illness perception can predict social alienation in MHD patients, and fear of progression use plays a part in mediating the process by which illness perception affects social alienation. The Kappa Squared (κ2) value of 21.9%, suggests a medium effect size.

Conclusions

Illness perception directly predicts social alienation in MHD patients and exerts an indirect effect through the mediating role of fear of progression. Suggests that healthcare professionals should concentrate on MHD patients with high negative illness perceptions to alleviate their fear of progression, thereby decreasing the level of social alienation and enhancing their integration into society.
Video Pembelajaran Operasi Bilangan Bulat Ber-Subtitle Untuk Siswa Tunarungu
Authors: Indrayadi Alviansyah Putra , Kusmaedi Nadia Prita , Lubis Siti Masyitoh Azzahra , Permatasari Dian
Published: April 2024

Materi operasi bilangan bulat merupakan materi mendasari semua materi matematika. Akan tetapi, siswa tuna rungu mengalami kesulitan dalam mempelajari materi tersebut. Terbatasnya jumlah media pembelajaran juga menjadi salah satu hambatan. Penelitin ini bertujuan mengembangkan media video pembelajaran matematika ber-subtitle untuk siswa tunarungu pada materi operasi bilangan bulat. Penelitian ini merupakan penelitian RnD (Research and Development) dengan menggunakan model Hannafin dan Peck. Model ini terdiri dari tiga fase yaitu fase analisis kebutuhan, fase desain, dan fase pengembangan atau implementasi. Instrumen pada penelitian ini berupa lembar validasi. Hasil penelitian berdasarkan hasil validasi dari empat ahli, dapat disimpulkan bahwa video pembelajaran ber-subtitle untuk siswa tunarungu pada materi operasi bilangan bulat layak digunakan dengan nilai 3,27 yang termasuk dalam kategori sangat baik dengan rincian dua ahli menyatakan sangat baik dan dua ahli menyatakan baik.
Matematika Realistik : Eksplorasi Jajanan Pasar Yogyakarta Untuk Mengajarkan Materi Geometri
Authors: Antia Vindy , Suparni
Published: April 2024

ABSTRAK

 

Matematika merupakan salah satu mata pelajaran yang ditakutkan oleh siswa Hal ini karena matematika terkenal dengan kesulitannya. Pembelajaran matematika dengan menggunakan pendekatan Realistic Mathematic Education (RME) membantu siswa dalam memahami materi matematika yang di sampaikan oleh guru sehingga siswa tidak merasa kesulitan. Salah satu pembelajaran matematika dengan pendekatan Realistic Mathematic Education (RME) yaitu pada materi bangun ruang geometri dengan menggunakan bentuk-bentuk pada jajanan pasar Yogyakarta. Tujuan dari penelitian ini yaitu untuk mengeksplorasi jajanan pasar Yogyakarta  dalam materi bangun ruang geometri sehingga dapat digunakan dalam pembelajaran matematika dengan pendekatan Realistic Mathematics Education (RME). Metode penelitian yang digunakan dalam penelitian ini yaitu deskriptif kualitatif dengan teknik pengumpulan data yang digunakan yaitu library research atau studi pustaka. Data yang dikaji dalam penelitian ini diantaranya penjelasan singkat mengenai setiap jajanan pasar jogja yang digunakan dan analisis bentuk jajanan pasar tersebut pada bangun ruang geometri berupa bentuk, ciri-ciri dan rumus-rumusnya. Dari hasil penelitian didapatkan jajanan pasar jogja berupa arem-arem berbentuk tabung, klepon berbentuk bola, wajik berbentuk balok, clorot berbwntuk kerucut dan meniran berbentuk prisma segitiga. Jajanan pasar Yogyakarta tersebut memiliki bentuk yang berbeda-beda. 

Kata kunci : geometri, jajanan pasar Yogyakarta, RME

 

 

ABSTRACT

Mathematics is one of the subjects that students are afraid of. This is because mathematics is known for its difficulties. Learning mathematics using the Realistic Mathematical Education (RME) approach helps students understand the mathematics material presented by the teacher so that students do not find it difficult. One of the mathematics lessons with the Realistic Mathematical Education (RME) approach is on geometric geometric shapes using shapes in Yogyakarta market snacks. The purpose of this study is to explore Yogyakarta market snacks in geometrical geometric shapes so that they can be used in learning mathematics using the Realistic Mathematics Education (RME) approach. The research method used in this research is descriptive qualitative with data collection techniques used namely library research or literature study. The data studied in this study include a brief explanation of each Jogja market snack used and an analysis of the shape of the market snacks in geometric shapes in the form, characteristics and formulas. From the results of the study, it was found that traditional Jogja snacks were in the form of tubular arem-arem, spherical klepon, block-shaped diamonds, invitation-shaped clorot and triangular prism-shaped meniran. The Yogyakarta market snacks have different forms.

Keywords: geometry, Yogyakarta market snacks, RME
Peningkatan Motivasi dan Hasil Belajar Matematika Peserta Didik SMP Menggunakan LKPD Berbantuan Whatsapp Group Berdasarkan Gender
Authors: Suswiyati  , Syukrul Hamdi  , Endar Chrisdiyanto
Published: April 2024

Penelitian ini bertujuan untuk meningkatkan motivasi dan hasil belajar matematika peserta didik SMP menggunakan LKPD berbantuan WhatsApp Group berdasarkan gender. Metode penelitian menggunakan tindakan kelas tiga siklus. Pengumpulan data menggunakan tes, angket, lembar observasi, dan wawancara.  Teknik analisis data deskriptif kualitatif dan uji one sample t-test.  Hasil penelitian sebelum tindakan didapatkan rata-rata motivasi peserta didik laki-laki 22.73 dan perempuan 25.41. Setelah diberikan tindakan 3 siklus didapatkan nilai rata-rata peserta didik laki-laki 24,47, 25,13 dan 26,33. Nilai rata-rata peserta didik perempuan 26,65, 27,41 dan 29,18.  Hasil uji t pada 3 siklus didapatkan nilai berturut-turut 0,029, 0,035, dan 0,03. Hasil ini menunjukkan bahwa motivasi belajar peserta didik perempuan lebih tinggi daripada laki-laki. Sedangkan hasil belajar sebelum diberikan tindakan didapatkan nilai rata-rata peserta didik laki-laki 42,00 dan perempuan 60,59. Setelah diberikan tindakan 3 siklus didapatkan nilai rata-rata peserta didik laki-laki 58,33, 70,67, dan 78,67.  Nilai rata-rata peserta didik perempuan 71,18, 83,53, dan 88,24. Hasil Uji t pada siklus 1 dan 2 berturut-turut 0,042, dan 0,035. Sedangkan pada siklus 3 tidak ada perbedaan hasil belajar peserta didik berdasarkan gender. Berdasarkan analisis data maka penggunaan LKPD berbantuan WhatsApp Group kelas VIIIA efektif dalam meningkatkan motivasi dan hasil belajar matematika yang didasarkan pada perbedaan gender.

 Kata Kunci: Gender, Hasil Belajar, Motivasi Belajar, Pembelajaran Matematika
Eksplorasi Motif Geblek Renteng: Aplikasi Grup Kristalografi dengan Graphical User Interface (GUI)
Authors: Putranto Sumbaji , Ratnasari Gamarina Isti , Purnama Pratama Wahyu
Published: April 2024

Geblek is one of Kulon Progo's specialty foods made from cassava flour with a shape resembling a figure eight. Geblek is the main pattern used in the batik typical of Kulon Progo. The batik motif uses repetitive and symmetrical patterns. The application of mathematics, especially cryptography, can be used to find repetitive patterns that can inspire batik motifs. This research aims to describe how a basic geblek pattern from Kulon Progo can be transformed into various other patterns using the concept of plane crystallography. The geblek pattern is applied to 17 crystallographic groups, resulting in 17 batik motifs. The use of Graphical User Interface (GUI) in MATLAB will make it easier to form batik motifs. Based on the exploration results, 17 patterns were derived from the basic pattern of Kuln Progo geblek. Uniquely, from these 17 patterns, there are the same and similar patterns. In other words, the patterns found from the basic geblek pattern do not reach 17 patterns. The development pattern of Kulon Progo geblek is further described in this article.
Scholars and Literati at the Academy of Sciences, Letters and Arts of Arras (1737–1793)
Authors: Zanardello Chiara
Published: April 2024

This note summarizes our research into the group of scholars and literati at the Academy ofSciences, Letters and Arts of Arras from 1737 to 1793.
Ciência e pesquisa: a responsabilidade da Harmonização Orofacial
Authors: Barros Tarley Pessoa de , Ferrão Junior José Peixoto
Published: April 2024

Prezados colegas e profissionais da Harmonização Orofacial, É com imenso prazer e uma profunda sensação de felicidade e de responsabilidade que nos dirigimos a vocês, para apresentar esta edição tão aguardada e especial de nossa publicação, dedicada à vanguarda da Harmonização Orofacial para cirurgiões-dentistas. Esse momento marca não apenas o início de um novo capítulo em nossa jornada profissional, mas também reafirma nosso compromisso inabalável com a excelência, a inovação e o aprofundamento do conhecimento nessa especialidade que tanto nos fascina.
Rejuvenescimento facial com ácido hialurônico
Authors: Miyoshi Katia Regina , Azevedo Karina Monney Peixoto Ferrão de , Ferrão Júnior José Peixoto
Published: April 2024

Objetivo: Este artigo tem como objetivo apresentar um caso clínico em que foi usado o ácido hialurônico (AH) injetável em tratamento de rejuvenescimento facial. Relato do caso: Paciente do sexo feminino, 50 anos de idade, leucoderma, procurou atendimento relatando como queixa principal a insatisfação com o rosto, com expressão de “cara caída”. A paciente relatou que, após o falecimento do pai, percebeu uma piora na expressão. O procedimento foi realizado em etapas: no dia 15/9/2021, realizou-se o preenchimento da pré-maxila e malar; em seguida, realizou-se o planejamento, definindo a realização de preenchimento com AH nas regiões de pré-maxila, malar e lábio. Realizou-se a antissepsia da face com solução aquosa de clorexidina 2% e gaze estéril — o produto utilizado foi AH de reticulação média (Saypha Volume®), 3 ml divididos nas regiões de pré-maxila e malar, e 1 ml nos lábios. Posteriormente, foi utilizado, na pré-maxila e malar, anestésico sem vasoconstritor em seus pertuitos: para a pré-maxila e malar, utilizou-se agulha 18G para o pertuito e cânula 22G. A segunda etapa foi realizada no dia 6/10/2021, realizando-se preenchimento labial (escultura labial) com anestesias intrabucais (infraorbital e mentoniana) com vasoconstritor. Foram utilizados os anestésicos Mepivacaína (sem vasoconstritor) e Lidocaína (com vasoconstritor). Nos lábios, somente técnica com agulha (técnica russa) antes e depois. Resultados: No dia 17/11/2021, realizou-se a fotografia final, e a paciente relatou satisfação com o resultado. Conclusão: O uso do AH na harmonização orofacial fornece os benefícios necessários para uma pele saudável, com volume, sustentação, hidratação e elasticidade.
A responsabilidade civil na Harmonização Orofacial
Authors: Galache Thais Rodrigues , Galache Marcelo
Published: April 2024

Introdução: Com a busca pela estética orofacial aumentando a cada dia, podem restar, após o tratamento, expectativas não alcançadas na visão do paciente. Podem, também, ocorrer problemas como negligências, imprudências ou imperícias nos procedimentos, resultando em danos reversíveis ou até permanentes, além de distúrbios psicológicos que levam o paciente a procurar ajuda judicial. Atualmente, é primordial conhecer o código de ética que rege a profissão, além de um maior entendimento da responsabilidade civil e do código de defesa do consumidor. Objetivo: Este estudo teve como objetivo analisar a responsabilidade civil do especialista em Harmonização Orofacial, especialidade odontológica regulamentada pela Resolução do CFO 198/2019. Material e Métodos: O estudo baseou-se em 29 referências bibliográficas sobre a responsabilidade civil da especialidade de Harmonização Orofacial. Discussão: O cirurgião-dentista é um prestador de serviço e, diante disso, enquadra-se como fornecedor; e o paciente, como consumidor. Deve-se, assim, ter a consciência dos riscos e obrigações no exercício profissional, como responder frente à justiça pelos prejuízos causados ao paciente. Conclusão: O profissional deve proteger-se, sendo fundamental a elaboração e arquivamento de documentos, além de manter uma boa relação com o paciente, para evitar que o profissional seja acionado judicialmente por problemas ocorridos nos atendimentos.
Entre serpientes y escaleras: Las trayectorias de un grupo de estudiantes indígenas en la universidad
Authors: Perez-Castro Judith
Published: April 2024

Los estudiantes indígenas representan el 1% de la matrícula en el nivel superior en México. La exclusión de la que han sido objeto constituye un problema estructural en el que confluyen factores internos y externos al sistema educativo. En este trabajo, abordamos las barreras y facilitadores en los estudiantes universitarios de origen indígena.  La investigación se basó en la etnografía colaborativa y para el trabajo empírico realizamos entrevistas a profundidad a un grupo de alumnos y alumnas indígenas de la Universidad Nacional Autónoma de México (UNAM). En sus testimonios, los jóvenes apuntan a tres tipos de barreras principalmente: económicas, académicas y actitudinales con consecuencias tanto en sus aprendizajes y logro educativo, como en sus posibilidades de sentirse incluidos en la universidad. No obstante, paralelamente, destacan la existencia de ciertos apoyos, tanto a nivel institucional como de parte de sus familiares, compañeros y profesores. Concluimos que la situación que viven las y los jóvenes de los pueblos originarios es compleja, debido a los múltiples obstáculos que tienen que sobrellevar, de ahí que sea necesario fortalecer las acciones institucionales para identificar las necesidades de las y los estudiantes y mejorar sus condiciones educativas.
Immunomodulatory and anti-inflammatory effects of bioactive compounds of Cassia angustifolia Vahl. leaf extract
Authors: Abood Walaa Najm
Published: April 2024

Cassia angustifolia Vahl. is a medicinal plant known for its efficacy in treating various, including respiratory conditions and skin inflammation. It possesses antibacterial and anticancer properties. This work investigated the immunomodulatory and anti-inflammatory effects of C. angustifolia. The ethanol leaf extract of C. angustifolia was utilized to examine gene expression related to angiogenesis cytokines in RAW 264.7 macrophage cells. The results demonstrated a significant increase in the viability of treated macrophage RAW 264.7 cells, accompanied by an improvement in angiogenesis cytokines expression and a dose-dependent inhibition of nitric oxide production. GC-MS analysis identified 11 active components within the extract, each exhibiting distinct biological activities such as antioxidant, antitumor and anti-inflammatory effects. Notable compounds include hexadecanoic acid, 2-pentadecanone, phthalic acid, oxalic acid, carbonic acid, tricosane, undecanal and many others. In conclusion, ethanol leaf extract of C. angustifolia exhibits immunomodulatory and anti-inflammatory effects by inhibiting nitric oxide production and enhancing the expression of angiogenesis cytokines.
Discordant gene expression in subcutaneous adipose and skeletal muscle tissues in response to exercise training
Authors: Svensson Michael , Lovric Alen , Åkerfeldt Torbjörn , Hellsten David , Haas Tara , Gustafsson Thomas , Rullman Eric
Published: April 2024

Exercise has different effects on different tissues in the body, the sum of which may determine the response to exercise and the health benefits. In the present study, we aimed to investigate whether physical training regulates transcriptional network communites common to both skeletal muscle (SM) and subcutaneous adipose tissue (SAT). Eight such shared transcriptional communities were found in both tissues. Eighteen young overweight adults voluntarily participated in 7 weeks of combined strength and endurance training (five training sessions per week). Biopsies were taken from SM and SAT before and after training. Five of the network communities were regulated by training in SM but showed no change in SAT. One community involved in insulin‐ AMPK signaling and glucose utilization was upregulated in SM but downregulated in SAT. This diverging exercise regulation was confirmed in two independent studies and was also associated with BMI and diabetes in an independent cohort. Thus, the current finding is consistent with the differential responses of different tissues and suggests that body composition may influence the observed individual whole‐body metabolic response to exercise training and help explain the observed attenuated whole‐body insulin sensitivity after exercise training, even if it has significant effects on the exercising muscle.
The BKCa (slo) channel regulates the cardiac function of Drosophila
Authors: Gururaja Rao Shubha , Lam Alexander , Seeley Sarah , Park Jeniffer , Aruva Shriya , Singh Harpreet
Published: April 2024

The large conductance, calcium, and voltage‐active potassium channels (BKCa) were originally discovered in Drosophila melanogaster as slowpoke (slo). They are extensively characterized in fly models as ion channels for their roles in neurological and muscular function, as well as aging. BKCa is known to modulate cardiac rhythm and is localized to the mitochondria. Activation of mitochondrial BKCa causes cardioprotection from ischemia–reperfusion injury, possibly via modulating mitochondrial function in adult animal models. However, the role of BKCa in cardiac function is not well‐characterized, partially due to its localization to the plasma membrane as well as intracellular membranes and the wide array of cells present in mammalian hearts. Here we demonstrate for the first time a direct role for BKCa in cardiac function and cardioprotection from IR injury using the Drosophila model system. We have also discovered that the BKCa channel plays a role in the functioning of aging hearts. Our study establishes the presence of BKCa in the fly heart and ascertains its role in aging heart function.
“And then We Were Taken to Ravensbrück.” Early Oral Testimonies About Ravensbrück and Its Sub Camps
Authors: Zezza Stefania
Published: April 2024

This article focuses on the analysis and interpretation of 15 testimonies collected immediately after the war by David Boder and by the Polish Historical Institute in Sweden with women deported to Auschwitz, evacuated to Ravensbrück in its last two phases and then to Malchow. The study of their statements can provide both a historical overview of Ravensbrück and its sub camps in 1944 and 1945, and help identify the effects of the camp, an overthrown social context, on individuals, women in this case, and groups. The comparative exam of the interviews allows to identify the crucial events and experiences which constitute the core of the interviewees’narration and representation of the events. The situations and episodes they chose to recall may explain their perception of the events and reveals a gendered perspective which affected their memories in terms of the selection of the events and their focus on specific issues. The memories were recalled in relation to social frames, which were different from those the survivors were previously used to and pertained to the context of the camp. These coordinates constitute a net which can provide an insight into the mechanism of memory construction and early representation of the Holocaust.
Techniques to mitigate the admission of radon inside buildings
Authors: Real Luís Pimentel , Linares-Alemparte Pilar , Poças Ana Reis , Viegas João Godinho
Published: April 2024

In this work, the factors that influence indoor radon (Rn) level and most usual methods to prevent or mitigate Rn are presented and discussed, according to their way of action. The findings show that it is possible to select the most appropriate and effective solutions for each situation, even in cases where there is a high risk of Rn concentration, by combining these methods to increase overall efficiency. Finally, most relevant strategic recommendations are presented to guarantee the success of Rn protection measures, to reduce problems associated with Rn.
Impact of ionic liquids on the thermal properties of polymer composites
Authors: Shamsuri Ahmad Adlie , Abdan Khalina , Yusoff Mohd Zuhri Mohamed , Jamil Siti Nurul Ain Md.
Published: April 2024

The integration of ionic liquids and polymer composites has become a promising way to improve their thermal properties, representing a notable advancement in the development of advanced materials for specific applications. Their thermal properties heavily influence the suitability of polymer composites for particular applications. It is imperative to understand and manipulate the thermal behavior of these composites to optimize their performance across various fields. In this mini-review, diverse polymer matrices and fillers utilized in polymer composites containing ionic liquids are categorized. Additionally, various ionic liquids employed in studies related to the thermal properties of polymer composites are identified. The impact of ionic liquids on the thermal properties of these composites is also briefly reviewed. The knowledge illustrated in this review enriches the understanding of the types of polymer matrices and fillers used in conjunction with ionic liquids, as well as their thermal properties. In a nutshell, imidazolium-based ionic liquids with tetrafluoroborate, bis(trifluoromethylsulfonyl)imide, hexafluorophosphate, halides, and hydrogen sulfate anions have the impact of improving the glass transition temperature, melting temperature, degradation temperature, and thermal conductivity of thermoplastic, thermosetting, and elastomer composites.
Do health-promoting lifestyle approaches manage mental health among adolescent/young college students?
Authors: Omidvar Shabnam , Khajavi Nazanin , Pasha Hajar , Mohsenzadeh Ledari Farideh , Sepidarkish Mahdi , Adib-Rad Hajar , Ezoji Khadijeh
Published: April 2024

Objectives

College students are often still relatively young, making their mental health more likely to be overlooked. A healthy lifestyle is considered the key to preventing and controlling mental health problems nowadays. This study aimed to investigate whether health-promoting lifestyle approaches manage mental health among adolescent/young college students.

Methods

This cross-sectional study was conducted on 187 adolescent/young college students at Babol Medical Science University, Babol, Iran. Characteristic demographics, health-promoting lifestyle profile (HPLP), and general health questionnaire-28(GHQ-28) were filled out by students. The data were analyzed using correlation coefficient and simple and multiple linear regressions.

Results

The majority of participants were adolescents (66.8%), single (97.9%), and bachelor's students (70.1%). The mean of the HPLP and GHQ scores was 125.09±18.12, and 33.58±10.50, respectively. HPLP was a negative significant predictor of mental health (β = -.261, P= .0001). There was a negative significant association between HPLP dimensions (except physical activity) and mental health. After adjusting for other variables, there was a significant relationship between HPLP with mother occupation (β =.186, P=.038), and mother education (β = -.219, P= .034). Furthermore, gender (β = .175, P= .031), and occupation (β =-.157, P= .040) were predictors of GHQ in adolescent/young college students.

Conclusions

Regarding the health-promoting lifestyle situation among students and its relation with the better mental health, the design and implementation of HPLP education programs is recommended.
Fabrication of modified lignin-based liquid mulching film and its potential application
Authors: Sun Zhonghua , Liang Jie , Qin Menghua , Ning Ruxia , Liu Xin , Sun Wei , Li Xiang
Published: April 2024

Liquid mulching film is an emerging film material to replace the traditional plastic film, which causes wide public concern. In this study, a graft copolymer (LS-AA) was synthesized from sodium lignosulfonate (LS) by free radical polymerization, which was added as enhancer to the cationic starch (CS) solutions to obtain the CLA based film. The grafting conditions was optimized by response surface methodology (RSM) for the preparation of LS-AA, after that the LS-AA was characterized by FTIR, XRD, and TG. The highest grafting rate was obtained under the reaction conditions of 80 °C for 2.6 h with the mass ratio of monomer and LS of 5.5/5 at initiator dosage of 1 %. The fabricated liquid mulching film with addition of LS-AA showed outstanding anti-ultraviolet, biodegradation, anti-erosion, which provided theoretical base and practical references for popularizing and application of liquid mulching film in the dust prevention and sand fixation.
Clinical implications of seropositive and seronegative autoantibody status in rheumatoid arthritis patients: A comparative multicentre observational study
Authors: Hammam Nevin , El-Husseiny Passant N. , Al-Adle Suzan S. , Samy Nermeen , Elsaid Nora Y. , El-Essawi Dina F. , Mohamed Eman F. , Fawzy Samar M. , El Bakry Samah A. , Nassr Maha , Nasef Samah I. , El-Saadany Hanan M. , Elwan Shereen , Gamal Nada M. , Moshrif Abdelhfeez , Hammam Osman , El Shereef Rawhya R. , Ismail Faten , Tharwat Samar , Mosa Doaa Mosad , Elazeem Mervat I Abd , Abdelaleem Enas A. , Gheita Tamer A.
Published: April 2024

Background and Objectives

Rheumatoid factor (RF) and anti-cyclic citrullinated protein (anti-CCP) have been used to improve the diagnosis and prognosis of rheumatoid arthritis (RA). However, their association with RA disease phenotypes, individually and in combination, is not well studied. The aim of the study was to compare patients’ and disease characteristics, activity and severity in double seronegative (DNRA), single seropositive RF, single seropositive anti-CCP and double seropositive (DPRA) patients.

Methods

Adults subjects with RA from Egyptian College of Rheumatology (ECR) database who had RF and anti-CCP results available were included. Demographic, clinical features, disease activity score 28 (DAS28), Health Assessment Questionnaire (HAQ) and laboratory data were collected and compared among different RA groups.

Results

5268 RA patients with mean age of 44.9±11.6 years, and 4477 (85%) were females. 2900 (55%) had DPRA, 892 (16.9%) had single positive RF, 597 (11.3%) had single positive anti-CCP while 879 (16.7%) had DNRA. Patients with DPRA had significantly high percentage of metabolic syndrome (19.3%, P < 0.001), and functional impairment using HAQ (P = 0.01). Older age (RRR [relative risk ratio]: 1.03, 95%CI: 1.0, 1.0, P = 0.029), greater DAS28 (RRR: 1.51, 95%CI: 1.2, 1.9, P < 0.001), higher steroid use (RRR: 2.4, 95%CI: 1.36, 4.25, P = 0.002) were at higher risk of DPRA while longer disease duration (RRR: 1.08, 95%CI: 1.01, 1.16, P = 0.017) and fibromyalgia syndrome (RRR: 2.54, 95%CI: 1.10, 5.88, P = 0.028) were associated with higher odds of single positive RF status.

Conclusion

Dual antibody-positive status has higher disease activity and severity, and higher chance of development of metabolic syndrome; highlighting the implicated role of inflammation, atherogenesis and cardiovascular disease risk in RA.
Testing and Evaluation of Hybrid Polymer Composites Reinforced with Moringa oleifera and Boehmeria nivea Fibers, Embedded with Copper Oxide Particulates, for Thermal, Structural, and Biological Properties
Authors: Raja Thandavamoorthy , Devarajan Yuvarajan , Logesh Kamaraj , Muniraju Chethan , Pandey Vijay Kumar , Dhanraj Ganapathy
Published: April 2024

The increasing need for sustainable materials in industrial applications has prompted a significant shift in attention from synthetic to natural fibers. This study examines the problems and opportunities arising from the utilization of natural fiber-reinforced polymer composites in several industrial sectors. The objective of this work is to fabricate a hybrid composite using a conventional hand layup technique with natural reinforcement of Moringa oleifera (MO) and ramie (Boehmeria nivea) fibers, an epoxy matrix blended with copper oxide filler, utilized to enhance material stability and antimicrobial activity. To quantify the effect of five different weight fractions of MO and ramie fibers on this hybrid composite, its mechanical, thermal, functional, and antifungal properties were examined. The superior tensile strength (61.34 MPa), flexural strength (64.78 MPa), and impact energy (23 J) results indicate that ramie fiber loading should be increased. Additionally, enhanced thermal properties such as thermal conductivity (0.93 W/mK), heat deflection temperature (97°C), thermal expansion coefficient (1.7210−5/°C), and maximal thermal stability were observed at 347°C as a result of the increased ramie fiber loading. This analysis demonstrates that this hybrid composite possesses the antifungal activity necessary to form an inhibition zone against Candida albicans. Scanning electron microscopy analysis was conducted to determine the hybrid composites’ bonding strength and failure mode.
Monitoring Changes in TMS-Evoked EEG and EMG Activity During 1 Hz rTMS of the Healthy Motor Cortex
Authors: Schoisswohl Stefan , Kanig Carolina , Osnabruegge Mirja , Agboada Desmond , Langguth Berthold , Rethwilm Roman , Hebel Tobias , Abdelnaim Mohamed A. , Mack Wolfgang , Seiberl Wolfgang , Kuder Manuel , Schecklmann Martin
Published: April 2024

Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive brain stimulation technique capable of inducing neuroplasticity as measured by changes in peripheral muscle electromyography (EMG) or electroencephalography (EEG) from pre-to-post stimulation. However, temporal courses of neuromodulation during ongoing rTMS are unclear. Monitoring cortical dynamics via TMS-evoked responses using EMG (motor-evoked potentials; MEPs) and EEG (transcranial-evoked potentials; TEPs) during rTMS might provide further essential insights into its mode of action – temporal course of potential modulations. The objective of this study was to first evaluate the validity of online rTMS-EEG and rTMS-EMG analyses, and second to scrutinize the temporal changes of TEPs and MEPs during rTMS. As rTMS is subject to high inter-individual effect variability, we aimed for single-subject analyses of EEG changes during rTMS. Ten healthy human participants were stimulated with 1,000 pulses of 1 Hz rTMS over the motor cortex, while EEG and EMG were recorded continuously. Validity of MEPs and TEPs measured during rTMS was assessed in sensor and source space. Electrophysiological changes during rTMS were evaluated with model fitting approaches on a group- and single-subject level. TEPs and MEPs appearance during rTMS was consistent with past findings of single pulse experiments. Heterogeneous temporal progressions, fluctuations or saturation effects of brain activity were observed during rTMS depending on the TEP component. Overall, global brain activity increased over the course of stimulation. Single-subject analysis revealed inter-individual temporal courses of global brain activity. The present findings are in favor of dose-response considerations and attempts in personalization of rTMS protocols.
Severity-Dependent Interhemispheric White Matter Connectivity Predicts Poststroke Neglect Recovery
Authors: Kaufmann Brigitte C. , Pastore-Wapp Manuela , Bartolomeo Paolo , Geiser Nora , Nyffeler Thomas , Cazzoli Dario
Published: April 2024

Left-sided spatial neglect is a very common and challenging issue after right-hemispheric stroke, which strongly and negatively affects daily living behavior and recovery of stroke survivors. The mechanisms underlying recovery of spatial neglect remain controversial, particularly regarding the involvement of the intact, contralesional hemisphere, with potential contributions ranging from maladaptive to compensatory. In the present prospective, observational study, we assessed neglect severity in 54 right-hemispheric stroke patients (32 male; 22 female) at admission to and discharge from inpatient neurorehabilitation. We demonstrate that the interaction of initial neglect severity and spared white matter (dis)connectivity resulting from individual lesions (as assessed by diffusion tensor imaging, DTI) explains a significant portion of the variability of poststroke neglect recovery. In mildly impaired patients, spared structural connectivity within the lesioned hemisphere is sufficient to attain good recovery. Conversely, in patients with severe impairment, successful recovery critically depends on structural connectivity within the intact hemisphere and between hemispheres. These distinct patterns, mediated by their respective white matter connections, may help to reconcile the dichotomous perspectives regarding the role of the contralesional hemisphere as exclusively compensatory or not. Instead, they suggest a unified viewpoint wherein the contralesional hemisphere can – but must not necessarily – assume a compensatory role. This would depend on initial impairment severity and on the available, spared structural connectivity. In the future, our findings could serve as a prognostic biomarker for neglect recovery and guide patient-tailored therapeutic approaches.
Gathering Despite Scattering
Authors: Cooley Claire
Published: April 2024

Much of the material related to the first female cine-workers in Iran and Egypt is not centrally curated in an archive but scattered across a variety of platforms, personal collections, books, databases, and other locations. The scattered nature of these sources reflects current practices of official state film archives in Egypt and Iran, and also connects to the lived realities of female cine-workers in the way that their unruly bodies often dissonated with the national film narratives with which they were expected to align and to represent, and experienced stigma as a result. I take this scattering seriously to propose “gathering despite scattering,” a decolonial and feminist method of constructing the archives that form the basis of our historical analysis. Gathering despite scattering embraces the corporeal, learns from provenance, and challenges the national and Eurocentric frameworks that have often strictured the histories of cinema in places like Egypt and Iran.
“Wrath, Witches, and Wondrous Women”
Authors: Saccone Kate
Published: April 2024

Responding to the widespread material loss of silent films today, this article constitutes a playful exercise in curating a selection of nonextant films directed, written, and produced by early women filmmakers. After an introduction to the exercise, which sets up the feminist and film curatorial stakes of such an endeavor, I present my thematically organized film program (curatorial statement and program notes) to the reader. Drawing together films by women who worked in Peru, Croatia, Egypt, China, Mexico, Poland, and the United States, I argue that curating lost films not only makes space for a more inclusive picture of women’s contributions to cinema history; this exercise is also a call for more imaginative approaches to feminist film and media curatorial practices.
Restoring and Curating Jocelyne Saab’s Cinema of Middle East Struggle
Authors: Rouxel Mathilde
Published: April 2024

Jocelyne Saab was one of the most prolific Lebanese directors of her generation. Yet for a long time, her work went unnoticed by Lebanese and international critics alike. Difficult to program due to the quality of the copies in circulation, some of her work on the Lebanese civil war and the great popular struggles of the 1970s–1980s in the SWANA region fell into oblivion. Created in 2019 to promote and enhance the filmmaker’s work, the Association Jocelyne Saab has undertaken to train technicians in Lebanon in the specialized field of film preservation and digital restoration. This undertaking, supported by FIAF, the Swiss Film Archive, and INA, who supervised the training courses organized by the Jocelyne Saab Association, enabled the restoration of fifteen documentary films made between 1974 and 1982. This allowed a feminist look at the history of the SWANA region to be put back into circulation.
Complicating Legacies
Authors: Longo Regina M.
Published: April 2024

In 2020 the Albanian Cinema Project’s restoration of Tomka Dhe Shoket e Tij (Tomka and His Friends, 1977) premiered on Turner Classic Movies in their “Women Make Film” series. This event marked the culmination of my work to bring the films of Albania’s first female film director, Xhanfise Keko, into global distribution. A key aim for these projects was to begin to open up a space for Albanians at home and in the diaspora to address the silences that persisted around their years under an extreme, isolationist dictatorship. This article maps the project of re-education that I embarked on as an archivist, curator, and media historian. Now, with ACP shuttered and the benefit of hindsight, I reflect on the work of restoring and re-releasing Albanian films as a project of re-programming (double entendre intended) Albanian socialist-realist cinema for contemporary, global publics.
La garantía del derecho a la memoria: una aproximación desde la literatura infantil
Authors: Pabón Mantilla Ana Patricia , Sánchez Ramírez Jenny , Alzate Alzate Natalia Andrea , Vásquez Santamaría Jorge Eduardo
Published: April 2024

Las confrontaciones bélicas de un conflicto armado como el colombiano han generado afectaciones a los derechos humanos que acreditan razones para indagar el tipo de daños a bienes constitucional y convencionalmente protegidos. Objetivo: Este texto se concentra en las vulneraciones al derecho a la memoria, y en posibles recursos con el potencial de reparar sus afectaciones. Con esa finalidad se explora el recurso a la literatura infantil como uno que permite viabilizar el tránsito de una memoria traumática a una sana. Métodos: Para ello se desarrolló una investigación cualitativa siguiendo el método hermenéutico, la estrategia documental, y un análisis orientado por la categorización, la estructuración y la contrastación. Conclusiones: Se concluye que la literatura infantil es una estrategia que viabiliza la garantía del derecho a la memoria, lo que implica reconocer que el texto literario no es solo un recurso para conservar la memoria de lo que sucedió en el conflicto, sino que permite potenciar el diálogo, la apertura a las preguntas y la comprensión de lo ocurrido también como garantía de no repetición y contribución a la verdad.
Publishing historical air photos in Alma Digital
Authors: Duplain René
Published: April 2024

Air photos have been used to support GIS-related research projects at the University of Ottawa, particularly in the field of climate science. The University of Ottawa Library houses a large collection of historical paper air photos and have recently increased efforts to further digitize this collection. Traditionally, the photographs have been searchable through a custom ArcGIS Online Web App, but this standalone portal has been limited in the accessibility and discoverability of these resources. In 2021, the University of Ottawa Library implemented Alma Digital as its institutional DAMS, which allowed its digital assets to be searchable directly within the library catalog, Omni. Following the implementation of this DAMS, close to 1,000 of the Library’s digital air photo collection were added to this platform. This has provided a new discovery portal for these digital air photos. Work to improve the discoverability, organization, and description of these resources, as well as numerous digitization projects, is still ongoing.
Navigating Conflict
Authors: Taika Salo Devries Justiina
Published: April 2024

Situated strategically in the Atlantic Ocean, the Azores Islands emerged as pivotal theaters during World War I and World War II and profoundly shaped these global conflicts through its geographic significance and technological advancements. In this paper, the evolution of navigation techniques, routes, and the strategic importance of the Azores according to the changing nature of warfare was analyzed. Through an examination of historical narratives and technological progress, insights were made into how the islands developed into critical hubs for naval and air operations. Advancements in airport infrastructure, telecommunications, and harbor facilities transformed the Azores into essential nodes for transatlantic shipping, communication networks, and surveillance in the Atlantic theater. Navigational strategies, informed by technological innovations, optimized air routes and access to strategic bases which bolstered military capabilities in both conflicts. Through the exploration of the relationship between technological progress, evolving warfare dynamics, and geopolitical significance, the enduring impact of the Azores Islands on shaping global conflicts throughout history was revealed.