bluuebunny/crossref_metadata_2025 huggingface dataset:
Propriedades de betão drenante em misturas com agregados reciclados
Authors: Ximenes J.M.C.B. , Aguiar J.L.B. , Jesus C.M.G. , Pais J.C. , Uher V.
Published: April 2024

Os materiais de pavimento rígido com betão drenante, após sua construção, sofrem um processo de degradação sob a ação do tráfego e das condições climáticas. Esse processo, que ocorre durante a vida útil do piso, pode ser mais lento se for bem construído e mantido. Assim, é fundamental que a caracterização mecânica do betão seja adequada para a sua aplicação. Assim, os ensaios de trabalhabilidade e densidade devem ser realizados em relação ao betão fresco. No caso do betão endurecido, são os ensaios de resistência à compressão e flexão, os ensaios de permeabilidade e os ensaios de resistência ao desgaste. O betão permeável pode ser uma solução de segurança bem-sucedida para chuvas fortes e inundações cada vez mais frequentes. Este estudo teve como foco a obtenção de um betão permeável otimizado, dentro do escopo das normas internacionais, por meio da análise do betão feitos com as mesmas relações A/C e tempos de vibração e os diferentes percentuais de agregado reciclado. Os resultados mostram a forte influência de ambos os parâmetros sobre a distribuição de porosidade e permeabilidade e a influência negativa de porosidades mais altas sobre a resistência. O betão com relação de 0,30 W/C e tempo de vibração de 40 segundos e 20% de agregado reciclado foi selecionado por seu desempenho mecânico superior.
Medição Contínua do Teor de Humidade em Materiais de Construção Consolidados com a Técnica Time-Domain Reflectometry
Authors: Freitas T.S. , Guimarães A.S. , Roels S. , Freitas V.P. , Cataldo A.
Published: April 2024

A medição do teor de humidade em materiais de construção é fundamental tanto ao nível da prática profissional como ao nível da investigação. Contudo, apesar da grande variedade de técnicas disponíveis para determinar o teor de humidade em materiais de construção, efetuar medições em profundidade, in situ e de forma pouco invasiva ao longo do tempo é ainda um grande desafio. A técnica Time-Domain Reflectometry (TDR) é vulgarmente utilizada para medições do teor de humidade do solo, mas a sua aplicação em materiais de construção é ainda considerada um método inovador e pouco explorado, especialmente no que diz respeito à sua implementação em materiais de baixa porosidade. Os principais obstáculos à corrente utilização da técnica em materiais de construção consolidados são: (1) a dificuldade de garantir um bom contacto entre o sensor TDR e o material; (2) a falta de expressões de calibração adequadas entre a permissividade e o teor de humidade para materiais de construção; (3) a ausência de procedimentos padronizados para obter curvas de calibração adequadas; e (4) a necessidade de desenvolver ferramentas automáticas capazes de processar os dados e fornecer a evolução do teor de humidade ao longo do tempo. Nesta comunicação, apresenta-se uma metodologia capaz de ultrapassar os referidos obstáculos e proporcionar medições bem-sucedidas do teor de humidade com o método TDR. Os resultados obtidos em amostras de pedra calcária e tijolo sólido demonstram que a técnica TDR é uma solução adequada para monitorizar o teor de humidade em materiais de construção, encorajando novos desenvolvimentos que potenciem uma utilização mais generalizada da técnica.
Chest CT Scan Features of COVID-19 in a Hospitalized High-Altitude Population
Authors: Calderón-Gerstein Walter , Torres - Samaniego Gabriela , Pazos-Sovero Kevin
Published: April 2024

There is a lack of knowledge regarding the type of lung compromise in high-altitude residents with COVID-19. This study aims to evaluate the lung compromise in chest CT scans of high-altitude dwellers hospitalized with COVID-19. Retrospective study that took place in "Daniel Alcides Carrión" Regional Hospital, located 3,250 meters above sea level in the city of Huancayo, Perú. 464 medical charts and chest CT images of hospitalized patients with confirmed COVID-19 from January to March 2021 were reviewed. The mean age was 56 years, 63.1% of the patients were male, and 85.8% of individuals had a CORADS 5. Ground glass infiltrates were found in 93.8% of the patients; alveolar consolidations were present in 86% and were usually bilateral. Thickened septa were described in 46%, lattice pattern in 38.8%, reticular components in 39%, and the crazy paving pattern in 36.9%. Most patients (84.5%) had central and peripheral lesions; only 4% had limited peripheral compromise, and 10% solely central distribution. The left posterior basal segment was the most affected pulmonary segment in 27% of the cases, and the right basal posterior in 26%. Less affected segments were the right and left apical (14% and 13%, respectively). Lung compromise in patients with COVID-19 in this high-altitude population was severe, with mostly bilateral compromise, increased diameter of the pulmonary artery, periaortic and subaortic lymph nodes enlargement, and extensive ground glass and alveolar lesions.
Leveraging Social Media to Predict COVID-19–Induced Disruptions to Mental Well-Being Among University Students: Modeling Study
Authors: Das Swain Vedant , Ye Jingjing , Ramesh Siva Karthik , Mondal Abhirup , Abowd Gregory D , De Choudhury Munmun
Published: April 2024

Background

Large-scale crisis events such as COVID-19 often have secondary impacts on individuals’ mental well-being. University students are particularly vulnerable to such impacts. Traditional survey-based methods to identify those in need of support do not scale over large populations and they do not provide timely insights. We pursue an alternative approach through social media data and machine learning. Our models aim to complement surveys and provide early, precise, and objective predictions of students disrupted by COVID-19.

Objective

This study aims to demonstrate the feasibility of language on private social media as an indicator of crisis-induced disruption to mental well-being.

Methods

We modeled 4124 Facebook posts provided by 43 undergraduate students, spanning over 2 years. We extracted temporal trends in the psycholinguistic attributes of their posts and comments. These trends were used as features to predict how COVID-19 disrupted their mental well-being.

Results

The social media–enabled model had an F1-score of 0.79, which was a 39% improvement over a model trained on the self-reported mental state of the participant. The features we used showed promise in predicting other mental states such as anxiety, depression, social, isolation, and suicidal behavior (F1-scores varied between 0.85 and 0.93). We also found that selecting the windows of time 7 months after the COVID-19–induced lockdown presented better results, therefore, paving the way for data minimization.

Conclusions

We predicted COVID-19–induced disruptions to mental well-being by developing a machine learning model that leveraged language on private social media. The language in these posts described psycholinguistic trends in students’ online behavior. These longitudinal trends helped predict mental well-being disruption better than models trained on correlated mental health questionnaires. Our work inspires further research into the potential applications of early, precise, and automatic warnings for individuals concerned about their mental health in times of crisis.
Promoting a Patient-Centered Understanding of Safety in Acute Mental Health Wards: A User-Centered Design Approach to Develop a Real-Time Digital Monitoring Tool
Authors: Louch Gemma , Berzins Kathryn , Walker Lauren , Wormald Gemma , Blackwell Kirstin , Stephens Michael , Brown Mark , Baker John
Published: April 2024

Background

Acute mental health services report high levels of safety incidents that involve both patients and staff. The potential for patients to be involved in interventions to improve safety within a mental health setting is acknowledged, and there is a need for interventions that proactively seek the patient perspective of safety. Digital technologies may offer opportunities to address this need.

Objective

This research sought to design and develop a digital real-time monitoring tool (WardSonar) to collect and collate daily information from patients in acute mental health wards about their perceptions of safety. We present the design and development process and underpinning logic model and programme theory.

Methods

The first stage involved a synthesis of the findings from a systematic review and evidence scan, interviews with patients (n=8) and health professionals (n=17), and stakeholder engagement. Cycles of design activities and discussion followed with patients, staff, and stakeholder groups, to design and develop the prototype tool.

Results

We drew on patient safety theory and the concepts of contagion and milieu. The data synthesis, design, and development process resulted in three prototype components of the digital monitoring tool (WardSonar): (1) a patient recording interface that asks patients to input their perceptions into a tablet computer, to assess how the ward feels and whether the direction is changing, that is, “getting worse” or “getting better”; (2) a staff dashboard and functionality to interrogate the data at different levels; and (3) a public-facing ward interface. The technology is available as open-source code.

Conclusions

Recent patient safety policy and research priorities encourage innovative approaches to measuring and monitoring safety. We developed a digital real-time monitoring tool to collect information from patients in acute mental health wards about perceived safety, to support staff to respond and intervene to changes in the clinical environment more proactively.
Promoting a Patient-Centered Understanding of Safety in Acute Mental Health Wards: A User-Centered Design Approach to Develop a Real-Time Digital Monitoring Tool (Preprint)
Authors: Louch Gemma , Berzins Kathryn , Walker Lauren , Wormald Gemma , Blackwell Kirstin , Stephens Michael , Brown Mark , Baker John
Published: April 2024

BACKGROUND

Acute mental health services report high levels of safety incidents that involve both patients and staff. The potential for patients to be involved in interventions to improve safety within a mental health setting is acknowledged, and there is a need for interventions that proactively seek the patient perspective of safety. Digital technologies may offer opportunities to address this need.

OBJECTIVE

This research sought to design and develop a digital real-time monitoring tool (WardSonar) to collect and collate daily information from patients in acute mental health wards about their perceptions of safety. We present the design and development process and underpinning logic model and programme theory.

METHODS

The first stage involved a synthesis of the findings from a systematic review and evidence scan, interviews with patients (n=8) and health professionals (n=17), and stakeholder engagement. Cycles of design activities and discussion followed with patients, staff, and stakeholder groups, to design and develop the prototype tool.

RESULTS

We drew on patient safety theory and the concepts of contagion and milieu. The data synthesis, design, and development process resulted in three prototype components of the digital monitoring tool (WardSonar): (1) a patient recording interface that asks patients to input their perceptions into a tablet computer, to assess how the ward feels and whether the direction is changing, that is, “getting worse” or “getting better”; (2) a staff dashboard and functionality to interrogate the data at different levels; and (3) a public-facing ward interface. The technology is available as open-source code.

CONCLUSIONS

Recent patient safety policy and research priorities encourage innovative approaches to measuring and monitoring safety. We developed a digital real-time monitoring tool to collect information from patients in acute mental health wards about perceived safety, to support staff to respond and intervene to changes in the clinical environment more proactively.
Assessment Literacy: Secondary School Teachers’ Conception of Formative Assessment
Authors: Worabu Rufael Disasa
Published: April 2024

Formative assessment has been proved to be one of the means of improving quantity and quality of students learning. However, it hasn’t been implemented effectively in classrooms may be because of misconceptions. The purpose of this research is to find out how English language teachers conceptualize formative assessment, and if their conceptions vary with level of their qualification. A total of 252 randomly selected secondary school English language teachers with different level of qualification filled in Teachers’ Conception of Formative Assessment (TCFA), questionnaire adapted from Teachers’ Conception of Assessment (TCOA III). They were also interviewed in groups of their qualification. The data from the questionnaire was analyzed running one-sample t-test and The One-way between groups ANOVA. The interview data was analyzed thematically. The result indicated that the participants’ conception is mixed and partially deviates from proper notion of formative assessment; It also revealed that the higher the level of qualification, the better conception of formative assessment. This implied poor conceptualization of the relation of teaching-learning and assessment that can impede its implementation.
COMPARISON OF ANTI-PROTEINURIC EFFECTS OF AMLODIPINE AND CILNIDIPINE AS AN ADD-ON DRUG TO BASELINE MEDICATION IN HYPERTENSIVE CHRONIC KIDNEY DISEASE PATIENTS
Authors: JAMES JESMI , JAYAKUMAR DHANYA , SANKARAN GOMATHY
Published: April 2024

Objectives: The objectives of the study were to compare the anti-proteinuric effects of amlodipine and cilnidipine in individuals with Chronic Kidney Disease (CKD) on baseline medication.
Methods: This was a prospective observational study carried out in the Department of Nephrology at Government T.D. Medical College, Alappuzha spanning a duration of 1 year from January 2016 to December 2016. The study encompassed a total of 90 hypertensive CKD patients-45 were administered amlodipine and the remaining 45 were given cilnidipine in conjunction with their existing baseline medications. The inclusion criteria consisted of hypertensive CKD patients aged between 18 and 80 years possessing a Glomerular Filtration Rate (GFR) between 30 and 60 mL/min and exhibiting blood pressure readings surpassing 140/90 mmHg despite receiving a loop diuretic (Tab. Frusemide 80 mg BD), an α-blocker (Tab. Prazosin 10 mg BD) and a β-blocker (Tab. Metoprolol 50 mg BD) for a minimum duration of one month. The key parameters that were monitored were sitting systolic and diastolic blood pressure readings and proteinuria which was evaluated by determining the Urine Protein Creatinine (UPC) ratio using untimed random urine samples. The GFR was calculated utilizing the Cockcroft-Gault formula.
Results: The number of patients who improved to stage 3A CKD from stage 3B CKD were more with cilnidipine which indicates its reno-protective action. Amlodipine was seen to have no effect on UPC ratio whereas cilnidipine decreased UPC ratio significantly.
Conclusion: Unlike amlodipine, cilnidipine exhibits marked reduction in proteinuria and improved GFR thereby preventing progression of hypertensive CKD patients to end stage renal failure.
ADVERSE DRUG REACTIONS OF BACLOFEN, NALTREXONE, AND ACAMPROSATE IN PATIENTS HAVING ALCOHOL DEPENDENCE: A CROSS-SECTIONAL PHARMACOVIGILANCE STUDY
Authors: PANDHARE SUDHIR PANDURANG , GOSAVI DEVESH , KUMAR MISHRA KSHIROD , SATHE HARSHAL SHRIRAM
Published: April 2024

Objectives: The research aims to investigate the prevalence and patterns of adverse drug reactions (ADRs), gauge the severity of these reactions, establish causality in ADR cases, and assess the preventability of such adverse reactions.
Methods: ADR information was gathered through personal interviews with patients or their relatives. Causality was assessed using the Naranjo algorithm, and a modified Hartwig and Siegel Severity Assessment Scale was used for estimating the severity of ADR. ADRs were grouped into various preventability categories based on the modified Schumock and Thornton criteria.
Results: The total number of patients evaluated in the baclofen, naltrexone, and acamprosate groups was 65, 28, and 42, respectively. The most commonly reported adverse events with baclofen were nausea (31.25%), followed by fatigue (18.75%) and headache (12.50%). The majority of patients receiving acamprosate reported nausea (57.14%), followed by diarrhea (28.57%). Patients receiving naltrexone most commonly reported nausea (35.71%), followed by abdominal pain (21.43%) and headache (14.28%).
Conclusion: This study shed light on the prevalence, severity, causality, and preventability of ADRs associated with anti-craving agents used to treat patients with alcohol withdrawal syndrome, providing valuable insights into the safety profiles of these medications.
Understanding Pathways, Substrates, and Media Optimization to Maximize Microbial Biosurfactant Production
Authors: Rawal Nikhil , Ansari Rukhsar
Published: April 2024

Abstract: The production of amphiphilic chemicals, known as biosurfactants, by different microorganisms is essential for lowering interfacial and surface tension. The pathways of biosurfactant synthesis are examined in this review, with a focus on the influence of carbon substrates on biosynthesis. It also covers the variety of substrates used in the production of biosurfactants, such as lignocellulosic wastes, agro-industrial wastes, oil processing byproducts, starch-rich wastes, industrial wastes derived from plants and animals, fish and chicken wastes, fruit and vegetable wastes, and wastes from fish and poultry operations. In addition, the optimization of media for the formation of biosurfactants is discussed, with particular attention to temperature, pH, concentration of salt, and sources of carbon and nitrogen. It is crucial to comprehend these routes and optimization techniques in order to address the economic and environmental issues related to waste management and increase the efficiency of biosurfactant production.
Features of the Implementation of Sustainable Development Goals in the Regional Integration Systems of the EAEU Countries
Authors: Iroshkina T. V.
Published: April 2024

Aim. To study the features of strategic planning and practical implementation of the concept of sustainable development of the countries of the Eurasian Economic Union, taking into account the Sustainable Development Goals in the context of the formation of a new architecture of the world structure and a change in the current world order.

Tasks. Consider the essence and principles of the SDG implementation; identify the specifics of the integration of the SDGs into the national strategies of individual states of the post-Soviet space; analyze the features of the localization of SDGs at the regional level using the example of Eurasian integration; determine the role of the EAEU in the context of the formation of a multipolar world system and strengthening the its position as a macro-regional center of the power; justify the priorities for achieving the SDGs in the context of sustainable development of the EAEU.

Methods. To achieve the set goals the following methodological approaches were used in the article. The constructivist approach makes it possible to determine the essence of sustainable development, its significance for society and the economy, as well as to analyze the regulatory and legal framework of the EAEU countries in this area. Comparative analysis made it possible to determine the relationship of SDGs with changed world architectures in retrospect and the current conditions. Empirical analysis makes it possible to assess the practical steps and efforts of the EAEU countries to achieve the SDGs, including the implementation of innovative projects and the rational use of the resource base.

Results. Understanding and regulation of sustainable development in the EAEU is justified. The study made it possible to establish that the countries of the Union attach importance to sustainable development, but at the legislative level there remains a problem of insufficient consistency of regulatory legal acts on this topic. This highlights the need for a clearer and more concrete regulatory framework for sustainable development. The study allowed to analyze the impact of globalization on the world and regional structure. It is argued, that the EAEU, as a regional association, has a unique opportunity to gain a foothold as one of the macro-regions in the multipolar world system. This provides strategic advantages in the context of a change in the world order on the way to multipolarity.

Conclusions. The study identified a number of priority tasks contributing to the achievement of the SDGs in the context of the sustainable development of the EAEU. The most important factors in this context are: food independence, energy sustainability, strengthening economic integration, infrastructure development, focus on hard innovation and digitalization.
Despatriarcalização do currículo e as abordagens de gêneros e sexualidades: relato de experiência em um espaço educativo do Nordeste
Authors: VASCONCELOS NETA S. M. , Guimarães A. P.
Published: April 2024

In recent years, the school curriculum has become a territory of dispute between conservatives and progressives. The tension was heightened when educators inserted debates on genders, sexualities and human diversity into basic education. Attempts to deconstruct the heteropatriarchal curriculum are still timid in Brazil. This is justified by the intensified political upsurge in the period from 2016 to 2022. The legitimization of persecution of education professionals contributed to many retreating from the discussion of gender and sexual diversity issues. However, the struggles attributed to the permanence of the debates were responsible for the construction of a school that was more affectionate and welcoming of diversity. Understanding the importance of this fight for a welcoming curriculum motivated the writing of the article. The objective of the text is to reflect on the perceptions observed during the lecture entitled Inclusions and Diversities. The lecture took place on July 7, 2022, in a public school in the state of Ceará and its target audience was students in the 9th year of elementary school. As a result, the importance of these debates for students was verified: (1) who suffer prejudice for dissenting from normalized sexuality; (2) the reproduction of heteropatriarchy in the school environment; (3) institutionalized violence in society; (4) silencing in the face of LGBTQIAPNphobia.
KONTRIBUSI PENDAPATAN WANITA PEDAGANG SAYUR TERHADAP PENDAPATAN KELUARGA DI DESA MATINAN KECAMATAN GADUNG KABUPATEN BUOL
Authors: Nurdian Nurdian , Akbar Ali , Erny Erny
Published: April 2024

Penelitian ini bertujuan untuk mengetahui berapa besar kontribusi berapa besar pendapatan Wanita pedagang sayur terhadap pendapatan rumah tangga di Desa Matinan Kecamatan Gadung Kabupaten Buol. Penentuan lokasi ditentukan secara sengaja (purposive). Populasi adalah Wanita pedagang sayur yang berada di pasar tradisional Desa Matinan. Penentuan responden dilakukan dengan metode sensus. Jumlah responden sebanyak 15 orang. Jenis data yang digunakan terdiri atas

data primer dan data sekunder. Analisis data yang digunakan adalah analisis pendapatan dan kontribusi Wanita. Hasil penelitian menunjukan bahwa kontribusi wanita pedagang sayur terhadap pendapatan keluarga di Desa Matinan Kecamatan Gadung Kabupaten Buol adalah 50% yaitu sebesar Rp. 1.090.266/Bulan.
Enablers of the successful implementation of the strategy of technological innovation in higher education
Authors: Alhaqbani Sultana Fayez , Abdelwahed Nadia Abdelhamid Abdelmegeed
Published: April 2024

Technological innovation has emerged as a formidable challenge for higher education institutions in the contemporary landscape. The present study explores the enablers of the successful implementation of technological innovation in Saudi Arabian higher education. We based this study’s conceptual framework on a rigorous literature review like Wu et al. (2002), Kihn (2010), and Packendorff et al. (2014). The study applied quantitative methods and collected 220 valid samples from employees of higher education institutions in Saudi Arabia through personal visits and online questionnaires. Employing structural equation modeling (SEM), the results of the study found a negative effect of project leadership (PL) on the implementation effectiveness of technological innovation (IETE). Further, the results demonstrate a positive significant impact of financial resources (FR) and top management style (TMS) on IETE. The study findings would provide valuable insights and evidence-based recommendations to practitioners and scholars in innovation management and organizational leadership. This study can inform strategic decisions, resource allocation, and leadership development within organizations, ultimately enhancing their ability to adapt to technological changes and leverage innovation for sustainable success.
Diagnosis and treatment of a case of eosinophilic solid cystic renal cell carcinoma and review of the literature
Authors: Jun Qiu , Hua Ni Lu , Liangzhi Yu , Longmin Yu , Xiaodong Zhu , Zengbin zheng
Published: April 2024

Eosinophilic solid and cystic renal cell carcinoma (ESC RCC) is a
relatively rare kidney tumor subtype, first documented pathologically by
Trpkov et al. in 2016[[1]](#ref-0001).Although first described
and named in pathology literature, ESC RCC is not included in the 2016
World Health Organization (WHO) classification. However, the
Genitourinary Pathology Society recommended it in 2021 as a new renal
cell carcinoma entity[[2]](#ref-0002).Owing to its low
incidence and relative rarity, as well as a general lack of familiarity
among pathologists, ESC RCC can easily be confused with other renal
tumors bearing similar morphological characteristics.In this article, we
will summarize and analyze clinicopathology, clinical manifestations,
imaging, and differential diagnosis of ESC RCC. We will draw insights
from a recently diagnosed ESC RCC patient at our hospital and study
relevant literature from both domestic and international sources. Our
goal is to enhance the diagnosis and comprehension of ESC RCC among
medical professionals and provide a deeper understanding of this rare
subtype.
Air Phase Entrapment Role in Hydrophobic Particle-Water-Air Mixtures Internal Structure and Density
Authors: Ma Wenpei , Tomac Ingrid
Published: April 2024

Post-wildfire mudflows, in which more than half of the solids are sand
or smaller, destroy the watershed environment, life, and
infrastructures. The surficial soil particles turn hydrophobic due to
the deposition of combusted organic matter during wildfires. Initiated
by raindrops splash, runoff and erosion grow into devastating mudflows,
quickly blasting obstacles on the way, and carrying large boulders and
debris. The internal composition of post-wildfire mudflows has recently
become of interest, intending to understand better mechanisms and
transport differences between post-wildfire mudflows and
non-post-wildfire mudflows. This paper shows critical new insights into
how the air got entrapped during the early stage of mudflow and how air
entrapment affects the properties of post-wildfire mudflows as a mixture
of air bubbles, water, and hydrophobic sand. This paper proposes and
experimentally investigates a new paradigm in which a significant amount
of air remains entrapped in post-wildfire mudflow via
hydrophobic-particle-air attraction. The mudflow mixture’s internal
structure depends on the physical state of small liquid marbles, which
are small air bubbles covered by hydrophobic sand particles. This paper
quantifies the amount of air trapped under different sand-water
volumetric concentrations, the effects of mixing speeds (energy), mixing
duration, and sand particle size on the final mudflow internal
structure. In addition, this paper proposes an empirical estimation of
density reductions due to air entrapment in the mixture during the
mixing process.
Detailed 3D structures of the western edge of the Pacific Large Low Velocity Provi
Authors: Li Jiewen , Zhang Baolong , Sun Daoyuan , Tian Dongdong , Yao Jiayuan
Published: April 2024

Large Low Velocity Provinces (LLVPs) are situated oppositely in the
lowermost mantle beneath the Pacific Ocean and Africa. Deciphering the
detailed seismic structures at the edge of LLVPs can provide key
information on the composition and dynamics in the deep Earth. Here, we
provide a detailed seismic image at the western edge of the Pacific LLVP
by dense recordings. Differential travel time residuals and amplitude
ratios between ScS and S outline the S-wave western boundary of the
Pacific LLVP, suggesting the complex structures including
low/high-velocity patches in the lowermost mantle in our study region.
We determine the 3D low-velocity structure by modeling the delayed ScS
and high-velocity D″ layer structure by modeling the anomalous Scd, with
tight constraints from multiple events data. The drastically varied
waveforms in azimuth suggests a sharp transitional boundary among the
complex structures. After comparing the velocity structures in adjacent
regions, we propose that the 3D structures of the western edge of the
Pacific LLVP are strongly influenced by the vigorous mantle flow
associated with the actively subducted slab.
A study on the predawn ionospheric heating effect and its main controlling factors
Authors: Tang Zhenzhang , Le Huijun , Liu Libo , Chen Yiding , Zhang Ruilong , Li Wenbo , Liu Wendong
Published: April 2024

We proposed for the first time that the angle between the projection of
the magnetic field line and the sunrise line (AMFS) is a crucial factor
controlling predawn heating. Then, we quantitatively investigated the
relationship between the predawn heating effect and the AMFS depending
on the model results and examined the influence of the length of the
magnetic field line (LMF). The results indicate that the predawn heating
is influenced by the combined effect of the AMFS and the LMF. Our study
suggests that the increase of AMFS promotes predawn heating, while the
increase of LMF blocks predawn heating. Finally, we found that when the
LMF is about 4000 km and the AMFS is around 30 degrees, the combined
effect of the AMFS and the LMF on the predawn heating effect reaches its
maximum, exceeding 400K, while the influence of both AMFS and LMF
exhibit saturation effects.
Disentangling the roles of subducted volatile contributions and mantle source heterogeneity in the production of magmas beneath the Washington Cascades
Authors: Walowski Kristina , Wallace Paul , DeBari Susan M. , Wada Ikuko , Shaw Steven D , Rea James
Published: April 2024

The compositional diversity of primitive arc basalts has long inspired
questions regarding the drivers of magmatism in subduction zones,
including the roles of decompression melting, mantle heterogeneity, and
amount and compositions of slab-derived materials. This contribution
presents the volatile (H2O, Cl, and S), major, and trace element
compositions of melt inclusions from basaltic magmas erupted at three
volcanic centers in the Washington Cascades: Mount St. Helens (two
basaltic tephras, 2.0–1.7 ka), Indian Heaven Volcanic Field (two
<600 ka basaltic hyaloclastite tuffs), and Glacier Peak (late
Pleistocene to Holocene basaltic tephra from Whitechuck and Indian Pass
cones). Compositions corrected to be in equilibrium with mantle olivine
display variability in Nb and trace element ratios indicative of mantle
source variability that impressively span nearly the entire range of arc
magmas globally. All volcanic centers have magmas with H2O and Cl
contributions from the downgoing plate that overlap with other Cascade
Arc segments. Volatile abundances and trace element ratios support a
model of melting of a highly variably mantle wedge driven by a
subduction component of either variably saline fluids and/or partial
slab melts. Magmas from Glacier Peak have Th/Yb ratios similar to Lassen
region basalts, which may be consistent with contributions of
“subcreted” metasediments not found in central Oregon and southern
Washington magmas that overly the Siletzia Terrane. This dataset adds to
the growing inventory of primitive magma volatile concentrations and
provides insight into spatial distributions of mantle heterogeneity and
the role of slab components in the petrogenesis of arc magmas.
Reactive nitrogen partitioning fuels contribution of Canadian wildfire plumes to U.S. ozone air quality
Authors: Lin Meiyun , Horowitz Larry Wayne , Hu Lu , Permar Wade
Published: April 2024

Accurately quantifying wildfire impacts on ozone air quality is
challenging due to complex physical and chemical processes in wildfire
smoke. Here we use measurements from the 2018 WE-CAN aircraft campaign
to parameterize emissions of reactive nitrogen (NOy) from wildfires into
PAN (37%), NO3- (27%), and NO (36%) in a global chemistry-climate
model with 13 km horizontal resolution over the contiguous US. The NOy
partitioning, compared with emitting all NOy as NO, reduces model ozone
bias in near-fire smoke plumes sampled by the aircraft but significantly
enhances ozone downwind when Canadian smoke plumes reach cities in
Washington state, Utah, Colorado, and Texas. Using multi-platform
observations, we identify the smoke-influenced days with daily maximum
8-h average (MDA8) ozone of 70-85 ppbv in Spokane, Salt Lake City,
Denver and Dallas. On these days, mixing of wildfire smoke into urban
pollution enhance simulated MDA8 ozone by 10–20 ppbv.
Engineering a Pathway to Glucose-Responsive Therapeutics
Authors: Webber Matthew J.
Published: April 2024

In 2014, the American Diabetes Association instituted a novel funding paradigm to support diabetes research through its Pathway to Stop Diabetes program. This program took a multifaceted approach to providing key funding to diabetes researchers to advance a broad spectrum of research programs on all aspects of understanding, managing, and treating diabetes. Here, the personal perspective of a 2019 Pathway Accelerator awardee is offered, describing a research program seeking to advance a materials-centered approach to engineering glucose-responsive devices and new delivery tools for better therapeutic outcomes in treating diabetes. This is offered alongside a personal reflection on 5 years of support from the ADA Pathway Program.

Article Highlights
Beneficios y riesgos de los cosméticos cannábicos de venta libre en Colombia
Authors: Rodríguez Castro Dorys Yaneth , Rodríguez Castro Sandra Astrid
Published: April 2024

A los ingredientes provenientes de la Cannabis sativa se les atribuyen numerosos beneficios para la piel, lo que ha dado lugar al aumento vertiginoso de cosméticos que la incluyen en su formulación. El objetivo de este artículo es evaluar los cosméticos cannábicos de venta libre en Colombia, con especial interés en responder a la pregunta, sí estos son recomendables para su uso dermocosmético. Para cumplir con este objetivo se llevó a cabo una revisión sistemática de los ingredientes y las características de 98 productos cosméticos para el cuidado de la piel con Notificación Sanitaria Obligatoria-NSO vigente en el país. A grandes rasgos, está revisión arrojó que la mayoría (90%) de los cosméticos cannábicos disponibles en Colombia son fabricados en el país. El 44% incluye en su formulación CBD, el 35% utiliza extractos de semilla de cannabis, mientras que el 11% combina estos dos ingredientes.
El análisis de los ingredientes reveló varias debilidades en la composición de estos productos que limitan su uso dermocosmético. En algunos otros casos, se observaron ingredientes que incluso podrían representar riesgos para la salud de la piel. Los hallazgos de esta revisión llevan a concluir que los cosméticos cannábicos comercializados en el país no cuentan con estudios de aceptabilidad y eficacia que respalden su uso dermocosmético, ni tampoco con pruebas que justifiquen muchas de las acciones cosméticas que indican en sus etiquetas. Dado la gran cantidad de opciones de cosméticos cannábicos de venta libre, es recomendable que los consumidores verifiquen si estos cosméticos cuentan con evidencia clínica que justifique su uso dermocosmético.
Entrenamiento concurrente, determinante para la condición física después de padecer COVID 19: estudio de caso
Authors: Velandia Cabrera Pedro Felipe
Published: April 2024

El COVID – 19, es una de las enfermedades más fuertes que ha padecido la humanidad; sin embargo, los procesos de recu­peración, la actividad física sigue siendo un medio importante en la salud del ser humano. Este estudio, diseñó un programa de ejercicio físico sistemático a partir del entrenamiento concurrente combinando la fuerza resistencia y la capacidad aeró­bica. Objetivo: describir el proceso de acondicionamiento físico a partir del entrenamiento concurrente para el desarrollo y mejora de la condición física después de haber padecido COVID – 19, estudio de caso; Método: enfoque cuantitativo, de tipo descriptivo en persona de 40 años de edad con nivel de condición física medio alto, con más de 5 años de entrenamiento y con secuelas del COVID - 19; Conclusiones: se puede determinar que el entrenamiento concurrente es un método eficaz para los procesos de acondicionamiento físico en personas con secuelas del COVID – 19, es necesario establecer los cargas de entrenamiento de manera progresiva que permitan mejorar la condición física del individuo.
Dificultades en la comprensión del concepto límite funcional en estudiantes de Química
Authors: Díaz Cordero Adriana , Badía Albanés Valentina
Published: April 2024

La comprensión del concepto límite es fundamental en la asignatura de Cálculo de una sola Variable, ya que constituye la base para el resto de los conceptos básicos estudiados en la asignatura como son, la continuidad de una función en un punto, la derivada y la integral de funciones de una variable; por lo que es de suma importancia lograr en el estudiante un entendimiento total del mismo, pues de no lograrlo no se alcanza un aprendizaje significativo en la asignatura. Aunque este es un tema ampliamente tratado, lo que se debe a la complejidad del propio concepto; en este trabajo se sistematizan las dificultades encontradas y reportadas en la bibliografía consultada que sirvieron como inspiración para proponer una detallada guía de observación. Además, se realiza una investigación descriptiva para analizar e identificar las dificultades que presentan los estudiantes de Química de la Universidad de La Habana en la manipulación del concepto de límite, a partir de observaciones realizadas en clase y de evaluaciones sistemáticas y parciales de la asignatura. Los resultados son evidencia de las dificultades conceptuales del límite de funciones de una variable real y marcarán el punto de partida para definir las acciones a llevar a cabo para solventar dichas dificultades, mejorando así el proceso de enseñanza aprendizaje de la asignatura.
Effect of Gas Flaring on Human Well-Being and Environment in Obodo-Ugwa, Ndokwa West, Local Government Area, Delta State, Nigeria
Authors: ED Oruonye
Published: April 2024

This study investigates the effect of gas flaring on human wellbeing and environment in Obodo-ugwa, Ndokwa West LGA, Delta State. The study used primary and secondary source of data. Water samples from wells, river and boreholes and soil samples were collected and analyzed using standard procedure. Landsat images for the years 2003, 2013 and 2023 were obtained from United States Geological Survey (USGS) online resources to assess the impact of oil spill on biodiversity (vegetation) using the Normalized Difference Vegetation Index (NDVI) in ARCGIS 10.6. The study administered 232 copies of questionnaires to compliment the data. The result of the findings revealed that the mean surface water (river) turbidity 16.00 NTU was 11.5% above the NSDWQ standard of 5.0., while the DO was 3.3% higher than the NSDWQ standard. The Biological Oxygen Demand (BOD) for Well water (A and B), borehole, and the river water were 9.8mg/L (96%), 9.9mg/L (98%), 7.7mg/L (54%) and 10.2mg/L (104%) higher than the Nigeria Standard for Drinking Water Quality (NSDWQ) and World Health Organization (WHO) Standard. For Chemical Oxygen Demand (COD), all water sources were above both the WHODWQ and NSDWQ. The soil analysis revealed manganese 4.53mg/kg (7.60%) above the Food and Agriculture Organization (FAO) limits of 4.21kg/kg, copper 7.60mg/kg (111.11%) above the 3.60mg/kg FAO limit. The NDVI result shows 80% deterioration vegetation health including farm land as only patches of healthy vegetation on the periphery as evident from 2003, 2013 and 2023 where the highest greenness index ranged from 0.26 to 0.34 in 2023, indicating that over the period of study, the forest in these areas have been degraded to mere shrubs. The study recommend that the Federal Government should enforce existing laws and provide alternative energy source to mitigate the effect of gas flaring on the people and salvage the environment.
Praktik Transaksi Reksa Dana Syariah pada Aplikasi Bibit Perspektif Fatwa DSN-MUI NOMOR: 20/DSN-MUI/IV/2001
Authors: Estri Isnaena  , Nurlaeli Ida
Published: April 2024

Mendorong aktivitas ekonomi yang sehat di perlukan pasar modal yang menyediakan sumber belanja dalam jangka waktu panjang. Sehingga investasi barang modal dapat menjadikan peningkatan produksi terhadap pasar tenaga kerja yang menghasilkan. Investasi menjadi kegiatan muamalah yang dianjurkan dalam ajaran Islam, sehingga mulai bermunculan paltform dan aplikasi yang mendukung kegiatan investasi, seperti aplikasi Bibit. Aplikasi Bibit merupakan salah satu aplikasi yang menyediakan layanan reksa dana dan membantu para investor pemula dalam memulai investasi. Aplikasi ini juga menyediakan pilihan reksana syariah, yang di dalamnya terdapat beberapa startup investasi syariah. Akan tetapi perlu penelitian yang mendalam terhadap mekanisme reksa danasyariah melalui aplikasi Bibit prespektif Fatwa DSN-MUI NOMOR: 20/DSN-MUI/IV/2001. Penelitian ini menggunakan pendekatan studi pustaka (library research). Hasil aktivitas investasi atau penanaman modal di pasar modal merupakan aktivitas yang dilakukan oleh pemilik harta (shahibu al-maal) terhadap emiten (pemilik perusahaan), dengan tujuan untuk memperoleh keuntungan atau laba yang diharapkan.
Условия излучения для 2-мерного уравнения Гельмгольца на границе ограниченной области
Authors: Горин Владимир
Published: April 2024

Получены выражения для линейного интегро-дифференциального оператора Дирихле-Неймана на круглой границе расчётной области в случае двумерной краевой задачи с уравнением Гельмгольца. Краевое условие с таким оператором имеет нелокальный характер: нормальная производная решения в данной точке границы линейно зависит не только от значения решения в данной точке, но и от значений решения во всех остальных точках границы. При этом оператор разделяется на аналитическую и расчётную части. Пригодность последней для расчётов подтверждена теоремой об абсолютной и равномерной сходимости определяющего её ряда.
PENERAPAN DISCOVERY LEARNING TERHADAP KEMANDIRIAN BELAJAR SISWA DI TINGKAT SMP
Authors: Mayori Putri Geovani , . Gimin , . Supentri
Published: April 2024

Penelitian ini dilatarbelakangi oleh rendahnya kemandirian belajar siswa. Hal ini disebabkan oleh beberapa faktor diantarannya yaitu penerapan metode pembelajaran yang masih bersifat konvensional yaitu menggunakan metode ceramah yang berupa penyampaian materi dengan siswa hanya sebagai penerima informasi saja. Tujuan penelitian ini untuk mengetahui pengaruh model pembelajaran discovery learning terhadap kemandirian belajar siswa pada mata pelajaran PPKn kelas VIII di SMP Negeri 1 Logas Tanah Darat. Penelitian ini merupakan penelitian kuantitatif yang bersifat eksperimen dengan desain pretest-posttest control group design. Populasi dalam penelitian ini yaitu seluruh siswa kelas VIII SMP Negeri 1 Logas Tanah Darat. Instrument penelitian yang digunakan dalam penelitian ini yaitu lembar observasi dan angket. Metode pengumpulan data menggunakan lembar observasi, angket dan dokumentasi. Dalam hasil perhitungan uji t menggunakan rumus uji independent samples t-test pada taraf Signifikan 5% atau 0,05 diperoleh nilai Sig. (2-tailed) = 0,000. Jadi 0,000 ≤ 0,05, berarti terdapat pengaruh model pembelajaran discovery learning terhadap kemandirian belajar siswa pada mata pelajaran PPKn kelas VIII di SMP Negeri 1 Logas Tanah Darat. Dapat disimpulkan bahwa penggunaan model pembelajaran discovery learning pada kelas eksperimen lebih efektif untuk meningkatkan kemandirian belajar siswa dibandingkan dengan penggunaan metode ceramah pada kelas kontrol.
Normas de fijación de precios en las legislaciones de cadena alimentaria europeas: el caso húngaro, lituano y español. A propósito de la STJ de 13 de noviembre de 2019 y la STJ de 11 de marzo de 2021
Authors: Talavera Cordero Pilar
Published: April 2024

El objeto de este comentario es analizar dos sentencias del TJUE (STJ de 11 de marzo de 2021 y STJ de 13 de noviembre de 2019) las cuales versan sobre cuestiones prejudiciales suscitadas por disposiciones normativas incluidas en Leyes nacionales (de Hungría y Lituania) cuya finalidad es luchar contra las prácticas desleales en el seno de las operaciones de la cadena alimentaria, enjuiciando la adecuación de tales disposiciones con el ROCM.
Bilis yámbica. Fisiología de la poética de invectiva
Authors: Carrizo Sebastián E.
Published: April 2024

Desde el origen del género, el ψόγος de la poesía yámbica en la Grecia arcaica se asoció llanamente con el propio temperamento del poeta y, en ocasiones, se comparó su mordacidad con la virulencia de un animal ponzoñoso. Poco a poco, esta caracterización fue aproximándose a lo que podríamos denominar una “fisiología del género poético”, es decir, la subordinación de la obra al temperamento colérico del poeta, lo cual encontrará posteriormente sustento en la teoría hipocrática de los humores. El presente artículo se propone indagar en los poemas de Arquíloco de Paros (VII a. C.) e Hiponacte de Éfeso (VI a. C.) y en los textos de sus respectivas tradiciones biográficas los modos en que se traza la representación fisiológica de la yambografía griega arcaica.
Economía Social y Solidaria, teorías y prácticas en tensión. El caso de la ciudad de Villa Mercedes y su feria
Authors: Pérez Alberto Enrique , Perotti Pinciroli Luciano
Published: April 2024

En términos generales un escenario de crisis civilizatoria, como la causada por el COVID-19, puede ser leído como un espacio de incertidumbre hacia el futuro inmediato. Esta coyuntura nos interpela y nos invita a discutir la lógica económica sobre la que se cimenta el modo de producción hegemónico a nivel global, y en particular en nuestro país. En tal contexto, se habilitan disimiles miradas desde el pensamiento sustentado en el campo conceptual de la Economía Política. Y es desde esta matriz teórica que se pretende analizar la potencialidad de lo que se ha dado en llamar Economía Social y Solidaria (ESyS) y su rol de germen coyuntural y transitivo en pos de una sociedad alternativa al capitalismo. En este escenario se generan tensiones entre la teoría y la práctica territorial que, este artículo intenta reflejar a partir del análisis de una experiencia de autogestión en la ciudad de Villa Mercedes (San Luis, Argentina).
Desafios na formação docente
Authors: Higa Ivanilda , Oliveira Odisséa Boaventura de
Published: April 2024

Analisa-se o papel formativo desempenhado pela participação dos alunos das licenciaturas em física e ciências biológicas em projetos que buscam articular ensino e pesquisa. Tomam-se como objeto de análise os relatórios escritos no término da participação em dois projetos durante a graduação. Buscaram-se as contribuições apontadas nos textos e, a partir de algumas noções da Análise do Discurso, em especial a de efeitos de sentidos, interpretaram-se as principais manifestações: valorização da coletividade, novas perspectivas e ruptura.