bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental Investigation of the Active Flow Control over a Cranked-Delta Wing
Authors: Mahdavi Zafarghandi Fatemeh , Reza Soltani Mohammad
Published: July 2023

A series of experiments was carried out to investigate the effects of active flow control on the aerodynamic characteristics of a cranked-delta-wing model at a subsonic speed. A dielectric barrier discharge (DBD) plasma actuator was used to improve the aerodynamic performance of the half-span cranked-delta-wing model at various angles of attack. The model had inboard and outboard sweepback angles of 57 and 38 deg, respectively. The surface pressure distribution was obtained at five streamwise stations and at two ray stations. All data were obtained at a constant Reynolds number of [Formula: see text] and at various angles of attack: [Formula: see text]. The results showed that the pulsed DBD plasma actuator improved the aerodynamic performance of the cranked-delta-wing model by preventing flow separation at high angles of attack. The deep stall angle of attack was delayed up to 6 deg, and the poststall suction coefficient was increased approximately 30% at an angle of attack of about [Formula: see text] when the pulsed DBD plasma was applied at its optimum condition ([Formula: see text] and duty [Formula: see text]). It was found that the pulsed plasma actuator suppressed the wake flow in the forward portion of the wing at poststall angles of attack, thus delaying the flow separation. However, the effects of the DBD actuator at very high angles of attack on the flow reattachment process at the rear portion of the wing for the present DBD setting were seen to be minimal. The induced flow by the pulsed DBD plasma actuator influenced the vortex merging phenomena and delayed the onset of the outer vortex burst at prestall angles of attack.
Nitrogen is becoming less available in ecosystems around the world
Authors: Mason Rachel
Published: July 2023

Nitrogen is an essential nutrient for plants and is necessary for making proteins. We gathered a diverse set of published records measuring nitrogen availability throughout history (since the 1700s) in different areas of the world. Our research suggests that humans are changing ecosystems in ways making nitrogen less available to plants and the creatures that eat them.
Adsorption capacity of chitosan hydrogel beads fabricated from Penaeus monodon shrimp shell waste for safranin o dye
Authors: Do Thi My Phuong , Nguyen Xuan Loc
Published: July 2023

In this study, we extracted chitosan from Penaeus monodon shrimp shell waste and used it as a bio-sorbent to remove safranin O (SO) dye in aqueous solutions. The chitosan adsorbent was characterised by using SEM and FTIR techniques. Batch adsorption experiments were carried out to evaluate the influence of solution pH (3–10), chitosan dosage (0.1–3 g), contact time (1–720 min), and initial SO concentration (10–200 mg·L–1) on adsorption. The results show that the adsorption of SO with chitosan reached equilibrium after 120 min, and after that, an insignificant change in SO removal efficiency was observed. The maximum adsorption capacity of SO, calculated according to the Langmuir model, was 17.86 mg·g–1 under ambient temperature (25 ± 2 °C), pH 7, chitosan dose of 0.2 g, and SO concentration of 50 mg·L–1. The adsorption kinetics followed the pseudo-second-order model with a correlation coefficient R2 of 0.95. The Langmuir and Freundlich adsorption isotherm models described the SO’s adsorption well, with R2 higher than 0.95.
A compact miniaturized multiband A-shaped monopole antenna for LTE/WiMAX/WLAN applications
Authors: Chandan  , Umesh Singh , Surendra Pratap Kannaujiya
Published: July 2023

A novel compact miniaturized A-shaped monopole antenna with triple-band operation was designed and presented in this paper. The antenna consists of a microstrip fed with a ground plane and four strip joint connections forming an A-shaped antenna that generates a multiband resonance. The antenna demonstrates three frequency operations with resonant modes of 2.7-3.2 GHz/3 GHz, 3.9-5.1 GHz/4.4 GHz, and 6.8-7.4 GHz/7.1 GHz, with impedance bandwidths of 16.67%, 27.27%, and 8.45%, respectively. The proposed antenna has a compact size of 26×32×0.8 mm3 and demonstrates a good radiation pattern and current density on the surface of the patch and ground. High-Frequency Structure Simulator (HFSS) software was used to simulate the antenna on a Flame Retardant- 4 (FR-4) dielectric substrate.
Decellularized human dermal extracellular matrix-derived scaffolds: compositional, mechanical, and in vitro biological characterizations
Authors: Fernández-Carro Estibaliz , Garcia-Barrios Alberto , Remacha Gayán Ana Rosa , Alcaine Clara , Ciriza Astrain Jesús
Published: July 2023

Currently, there is a growing demand for in vitro skin models. In search of a more realistic approximation of the tissue microenvironment, here, we present an optimized protocol for extracting and characterizing hydrogels obtained from decellularized dermal extracellular matrix from human skin to generate scaffolds for subsequent use in 3D skin models.
Virtual Mirrors: Non-Line-of-Sight Imaging Beyond the Third Bounce
Authors: Royo Diego , Sultan Talha , Muñoz Adolfo , Masumnia-Bisheh Khadijeh , Brandt Eric , Gutierrez Diego , Velten Andreas , Marco Julio
Published: July 2023

Non-line-of-sight (NLOS) imaging methods reconstruct scenes hidden around one corner using indirect third-bounce illumination on a visible relay surface. We show how diffuse hidden objects may exhibit specular behaviour in NLOS methods, and how fourth- and fifth-bounce illumination can encode useful information, such as imaging objects hidden around two corners.
Influence of the filling process on the behaviour of geotextile tubes
Authors: Barrantes Michael , Ribeiro Luís , Palmeira Ennio
Published: July 2023

Geotextile tubes can be used to dewater materials such as sludge, sediments or residues aiming at reducing their moisture contents to acceptable levels. The tube filling process can be carried out using one or several filling stages, and the number of stages can influence the tube behaviour in terms of dewatering rate, final shape and geotextile strains, for instance. In this research, laboratory tests were carried out on nonwoven geotextile tubes for the dewatering of a fine-grained material using different numbers of filling stages. The behaviour of the tube was monitored by instrumentation to assess tube geometry, pore pressures, total stresses at the tube base, geotextile strains and retention capacity. Evaluations of the accuracy of some available methods for the prediction of tube behaviour were also made. The results obtained showed that the increase in the number of filling stages resulted in larger final tube height, volume, geotextile strains as well as larger diameters of the soil particles that piped through the geotextile. Predictions of tube behaviour by available methods showed varying degrees of accuracy depending on the tube parameter considered.
Analysis of the structure of consumption of feed nutrients by animals in agricultural enterprises of dairy cattle breeding
Authors: Krupin Evgeny Olegovich , Shakirov Shamil Kasimovich , Chevtaeva Natalya Dmitrievna
Published: July 2023

The annual structures of harvested fodder by agricultural enterprises with different levels of productivity of the dairy herd have been established. The share of harvested hay was higher in agricultural enterprises of the second group and amounted to 6.7-8.4%. The maximum consumption of straw was typical for agricultural enterprises of the first group - 1.6-4.1%. The established shares of corn silage indicate that its use was largely due to the productivity of dairy herd animals. The share of corn silage in the farms of the first group was 19.2-24.7%. In 2021, the share of corn silage increased, mainly due to the formation of insurance stocks of feed on farms, especially the third group - 12.3-14.8%. The higher the productivity of cows and young animals, the more effectively grain forage is used in combination with other energy-protein feeds and feed additives that balance the diet. For 2021, on average, the use of grain fodder in the farms of the first and second groups was 37.9-42.8% and 36.9-46.4%, which is higher than in 2018-2020. by 7.2-9.0% and 8.9-11.0%. In general, regardless of the level of productivity of the dairy herd of farms, the provision of harvested feed with exchangeable energy and crude protein remains quite low due to their quality.
Caracterización proximal, microbiológica y sensorial de diversos tipos de quesos tipo Chihuahua, elaborados en la Zona Norte de Zacatecas
Authors: Morales-Cruz J. , Cruz-Guillen F.J. , González-Arellano M.A. , Cruz-Guillen F.J. , Esparza-García V.M.
Published: July 2023

Se realizó la caracterización proximal, microbiológica y sensorial de diversos quesos tipo Chihuahua elaborados en la zona norte del estado de Zacatecas a los cuales se les efectuaron las determinaciones proximales, nutricionales, sensoriales y microbiológicas, se compararon el San Lorenzo y el queso Ramírez. Los resultados fueron: Queso San Lorenzo: proteína cruda  15.6 %, grasa 31.5 %, humedad 42.4 %, cenizas 3.3 % y carbohidratos 7.2 %. Queso Ramírez: proteína cruda 16.8 %, grasa 33.0 %, humedad 39.4 %, cenizas 3.1 % y carbohidratos 7.7 %. Los dos presentan resultados similares y se consideran como productos nutricionalmente aceptables. Los resultados sensoriales fueron muy buenos ya que los atributos con mayor aceptabilidad son: el sabor (QS 4.5 Y QR 3.8), olor (QS 4 Y QR 3.7), color (QS 4.6 y QR 3.5) y en textura (QS 4.2 y QR 4.2). Sensorialmente el queso San Lorenzo presenta una buena calidad organoléptica, según los resultados de los evaluadores. Los resultados microbiológicos de los dos quesos, están dentro de lo que nos exige la NOM-213-SSA1-2017. De manera general se concluye que el queso San Lorenzo posee mejor calidad que el Queso Ramírez.
Evaluación de la estabilidad lipídica en hamburguesas de pollo adicionadas con extractos de guayaba (Psidium guajava L.) como antioxidantes
Authors: Herrera Méndez C.H. , Miranda Roque A. , Trujillo Santoyo A.D. , Arroyo Figueroa G. , Dzul Cauich J.G. , Medina Saavedra T.
Published: July 2023

Se analizó si extractos de guayaba retrasan la oxidación lipídica de la carne en hamburguesas. Se caracterizó la guayaba: pH 4.02 ± 0.11; acidez 0.14 ± 0.010; % humedad 83.80 ± 0.392;  % cenizas 0.34 ± 0.065; °Bx 12.98 ± 0.399 y % proteína 12.54 ± 1.135. Estudios a extractos: cáscara: 1544.4 ± 0.013 mg ácido gálico/100 g (fenoles totales), 43.79 ± 0.014 % de taninos, 261.334 ± 2.665 mg ácido ascórbico/100 g y 91.65 ± 0.003% inhibición (DPPH); pulpa: 563.1 ± 0.035 mg ácido gálico/100 g, 38.18 ± 0.009 % de taninos, 237.622 ± 2.059 mg ácido ascórbico/100 g y 88.67 ± 0.004 % inhibición; extracto combinado: 1237.3 ± 0.221 mg ácido gálico/100 g, 42.44 ± 0.007 % de taninos, 142.655 ±1.026 mg ácido ascórbico/100 g y 87.67 ± 0.004 % inhibición. Se determinaron el pH, color y oxidación de lípidos (TBARS). La oxidación del control fue 12.711 a 18.727 mg malondialdehído/kg de carne, mientras que en la carne tratada fue menor, siendo P80 el mejor tratamiento con un valor de 14.918 ± 0.019 mg malondialdehído/kg de carne, con lo que se concluye que al adicionar extractos de guayaba se puede disminuir la oxidación lipídica de la carne.
Exploring Yoruba Fire Cultures through Proverbs
Authors: Asiyanbi Adeniyi
Published: July 2023

This article argues that Yoruba proverbs are an essential source of popular wisdom on socio-environmental practices accessible through creative reconstruction and interpretation of their historical contexts. Learning from the everyday knowledge and accumulated wisdom of ordinary people holds significant promise at a time of unprecedented socio-environmental crisis and widespread calls for transformative change across scales. Drawing on the collection of Yoruba proverbs by Oyekan Owomoyela, broader Yoruba oral literature, Yoruba popular culture and a cross-disciplinary selection of academic literature, this article curates and reimagines nine Yoruba proverbs on the theme of fire, using these as an entry point to interrogate aspects of ecology and local understanding and practices of living with fires among the Yoruba people.
Mosquito Repellent Bioactivity Combination Extract Of Nutmeg Leaf (Myrisctica fragrans Houtt), Lemongrass (Cymbopogon nardus L.) and Apis dorsata Binghami Nests
Authors: Rogahang Meisa Tabita , Naharia Orbanus , Mokosuli Yermia Semuel
Published: July 2023

Nutmeg leaf, lemongrass, and bee nests contain bioactive compounds that have potential as mosquito repellents. The purpose of this study was to learn about the bioactivity of a combination extract of nutmeg leaf, lemongrass, and bee nests, as well as to determine the efficient mosquito repellent lotion recipe from a combination of nutmeg leaf, lemongrass, and bee nests extract. The maceration process was used for extraction. Total flavonoid content was estimated by comparing it to the flavonoid quercetin. The absorbance value was measured with a UV-Vis spectrophotometer. The concentration of the extract combination in the lotion used was 0%, 2.5%, 5% and 10%. The total flavonoid concentration was found to be 16.67 mgQE/g. The 2.5% formula lotion has a protective power of 22%, the 5% formula lotion has a power of 62.96%, and the 10% formula lotion has a power of 82.41%. From these results, it can be seen that a formula with a concentration of nutmeg leaf, lemongrass, and bee nests as much as 10% can be the most effective mosquito repellent. The outcomes of this study are expected to help the community select environmentally friendly and safe insect repellents.
The Effects of Plasticizer Types on Properties of Whey-Gelatin Films
Authors: Fahrullah Fahrullah , Kisworo Djoko , Bulkaini Bulkaini , Haryanto Haryanto , Wulandani Baiq Rani Dewi , Yulianto Wahid , Noersidiq Azhary , Maslami Vebera
Published: July 2023

Edible film is an alternative packaging that can be applied to food because it has biodegradable properties. The use of plasticizers can be used in the manufacture of edible films to increase the flexibility and densibility of the film. This study aims to determine the effect of plasticizer type on the thickness, WVTR, and moisture content of whey-gelatin film blends. The research was conducted in a Completely Randomized Design with three treatments, treatments that make a difference are tested with Duncan's Multiple Range Test (DMRT). The treatment used different plasticizer (P1G: Glycerol; P1S: Sorbitol; and P1P: polyethylene glycol (PEG) 400). The properties of whey-gelatin films showed that thickness was at 0.0350-0.0352 mm; the WVTR was at 4.87-6.22 g/m2/day; the water content was at 12.55-15.69%. The use of glycerol as plasticizer produced the best edible film characteristics compared to sorbitol and PEG 400 with a thickness value of 0.0350 mm; WVTR of 6.22 g/mm2/day and moisture content of 12.55%.
Analisis Kemampuan Komunikasi Statistis di Tinjau dari Gender Pada Siswa Kelas VIII SMP Negeri 22 Mataram Tahun Ajaran 2022/2023
Authors: Ekawati Baiq Noviana , Sarjana Ketut , Hayati Laila , Soeprianto Harry
Published: July 2023

Seiring dengan perkembangan ilmu pengetahuan dan teknologi, peran matematika sebagai salah satu ilmu dasar yang memiliki nilai esensial yang dapat diterapkan di berbagai bidang kehidupan menjadi sangat penting. Penelitian ini bertujuan untuk menganalisis kemampuan komunikasi statistis siswa ditinjau dari gender pada siswa kelas VIII SMP Negeri 22 Mataram tahun ajaran 2022/2023. Jenis penelitian ini adalah penelitian Deskriptif kualitatif penelitian ini mencakup masalah deskripsi murni tentang program dan atau pengalaman orang di lingkungan penelitian. Hasil penelitian ini menunjukan bahwa ada perbedaan antara kemampuan komunikasi statistis siswa laki-laki dan siswa perempuan hal ini dapat dilihat pada hasil  tTabel dengan menggunakan asumsi varian tak sama.Kemampuan komunikasi statistis siswa dikelompokan menjadi 4 kategori, dari 26 siswa perempuan diperoleh bahwa 11 siswa berkemampuan komunikasi statistis dalam kategori sangat baik dengan presentase 48%, 7 siswa berkemampuan komunikasi statistis dalam kategori baik dengan presentase 30%, 5 siswa berkemampuan komunikasi statistis dalam kategori cukup baik dengan presentase 22 %, dan tidak terdapat siswa perempuan yang berkemampuan komunikasi statistis dalam kategori kurang baik. Sedangkan dari 17 siswa laki-laki diperoleh 4 siswa yang berkemampuan komunikasi statistis dalam kategori sangat baik dengan presentase 24%, 3 siswa berkemampuan komunikasi statistis dalam kategori baik dengan presentase 18%, 8 siswa berkemampuan komunikasi statistis dalam kategori cukup baik dengan presentase 47%, 2 siswa berkemampuan komunikasi statistis dalam kategori kurang baik dengan presentase 12%.
Pengaruh Model Pembelajaran Perubahan Konseptual Terhadap Kemampuan Berpikir Kreatif Fisika Peserta Didik Kelas XI
Authors: Wati Sri Rahma , Taufik Muhammad , Harjono Ahmad , Zuhdi Muhammad
Published: July 2023

This research aims to examine the effect of conceptual change learning model on the creative thingking abilities of physics class XI students at MAN 1 Lombok Barat . This type of research is quasi experiment with pretest-posttest control group design. The research popuplation was all students of XI MIA MAN 1 Lombok Barat. Sampling technique of this research use saturated sampling so that there are two classes that is XI MIA 2 as the experimental class and XI MIA 1 as the control class. The experimental class was treated in the form of a conceptual change learning and the control class was treated in the form of a conventional learning model. Hypothesis testing of this research is Polled Variance t-test. The conclution of this research is there is the effect of conceptual change learning model on the creative thingking abilities of physics class XI students
Pengembangan Perangkat Pembelajaran Fisika Berbasis Pendekatan Konflik Kognitif Untuk Meningkatkan Kemampuan Argumentasi Ilmiah Peserta Didik
Authors: Liani Baiq Mia Rexa , Ayub Syahrial , Wahyudi Wahyudi , Makhrus Muh.
Published: July 2023

The purpose of this study was to determine the feasibility of physics learning tools based on cognitive conflict approach to improve students' scientific argumentation skills. The type of research used is Research and Development (R&D) with a 3D-based development model design consisting of 3 stages starting from Define, Design, and Develop. The product developed in this study is a learning device consisting of a syllabus, Learning Implementation Plan (RPP), Student Worksheets (LKPD), and test instruments. The feasibility of the learning device was obtained from the assessment of the validation questionnaire by the validator of physics lecturers and physics teachers. The assessment of the validation questionnaire produces qualitative and quantitative data. Qualitative data produces suggestions and inputs that are used as references to improve the learning tools developed. While the quantitative data is processed to get the value of validity and reliability. The quantitative data from the validation by the lecturers shows that the syllabus, lesson plans, and LKPD are in the very valid category and the test instrument shows a valid category. Meanwhile, the results of teacher validation showed that all the learning tools developed were in the very valid category. Data processing for reliability using the method Borich, known as the Percentage Agreement (PA). Reliability value of all learning tools, whether validated by lecturers or teachers, shows a reliable category because they have a value of more than 75%.
IS THERE A CAUSAL RELATIONSHIP BETWEEN FINANCIAL PERFORMANCE AND PREMIUM PRODUCTION? EVIDENCE FROM TURKISH INSURANCE INDUSTRY
Authors: IŞIK Özcan , SHABİR Mohsin , BELKE Murat
Published: July 2023

This study aims at determining the causal link between financial performance and premium production of non-life insurance companies. The relation between the financial performance and premium production is explored employing data from the 2011-2019 period for eight Turkish non-life insurance companies. In the first stage of the analysis, a hybrid model including LOPCOW, SWARA II, and MARCOS methods is proposed to determine companies’ financial performance values. In this stage, a novel integrated weighting method for calculating criterion weights is applied based on objective information and judgements of decision-makers. In the second stage, the association between financial performance and premium production is investigated by correlation analysis. In the last stage, the causality linkage between the two variables is estimated using a panel causality test developed by Dumitrescu and Hurlin (2012). According to the results obtained from the panel causality test, the bidirectional causality relation exists between financial performance and premium production. Besides, the individual panel causality results reveal that bidirectional causality is valid for only Allianz and Anadolu insurance companies, which had an average share of over 35% in total non-life premium production during the analysis period. The paper provides fresh evidence on the association between the financial performance and premium production, particularly from the Turkish context.
Meningkatkan Laba Melalui Networking
Authors: Aryani Dwi Nita , Bunyamin Bunyamin , Kadarusman Kadarusman , Nurastuti Nunung , Lating Ali , Tjahjani Fera , Hariadi Sugeng , Zuchroh Imama , Munfaqiroh Siti , Setiawan Setiawan , Murtiningtyas Triana
Published: July 2023

One of the company's goals is to increase profits. To increase profits can be done through increasing network relations (Networking). This community service is intended to provide insight into the importance of establishing networking so that business profits increase. Participants were given training and practice establishing relationships for 1 day. There were 20 MSME owners in Kampoeng Kajoetangan Malang who participated, then divided into 4 groups. Each group practices how to build relationships. From the training, the participants increased their knowledge and knew how to do or establish relationships. There are many ways to improve networking, namely attending training, attending exhibitions, social media, joining the community.
Analisis Bibliometrik Terhadap Penggunaan Information and Communication Technology (ICT) Pada Pembelajaran Matematika
Authors: Julianis Juli , Zulfah  , Astuti
Published: July 2023

The use of ICT in learning mathematics can help students to understand mathematics lessons easier. This study aims to determine the trend of articles using ICT in mathematics learning, the trend of articles that have the highest number of citations, classification of journal rankings, country of journals, and mapping in finding trends in international scientific publications with the Scopus database. The method used is bibliometric analysis. The population of this study was 200 articles as a result of searching data using the Publish or Perish (PoP) application from 2011-2021, obtained 92 articles as a sample that match the keyword criteria. Data is stored in Microsoft Excel as data processing material and stored in RIS format for use in VOSviewer software to get a mapping in finding publication trend. The trend of articles on the use of ICT has increased significantly from 2017 to its peak in 2019. The mapping analysis of the VOSViewer software has three themes related to the use of ICT in mathematics learning, namely “memory aid”, “effectiveness”, and “grade” which are still rarely studied and become the latest themes in research. This theme can be an opportunity for further research.
Mind the gap - Ideas for making clinical research more relevant for practitioners and patients
Authors: Berg Max , Schemer Lea , Kirchner Lukas , Scholten Saskia
Published: July 2023

The limited practical relevance of “typical clinical trials” - that often compare a small to medium sized group of patients diagnosed according to a standard clinical manual to a waiting list control condition - has been the matter of longstanding debate in clinical psychology. In this letter we present five reasons for why most clinical research might have gotten a reputation as “one source of many” and “oftentimes not relevant” for the everyday practice of clinical psychologists. More importantly we present novel ways for addressing major problems in our field based on recent developments. In short, we describe why addressing the research-practice gap requires a shift towards dismantling the effect of specific therapeutic techniques on better-operationalized transdiagnostic mechanisms. Further we discuss why monitoring individual trajectories and using causal inference in routine care can provide valuable insights into therapy effectiveness, if needed at an individual level. Finally, we believe that the active involvement of non-scientists in participatory science programs can be utilized to create research that is interesting and engaging to practitioners and patients alike.
Correction to Raising the value of research studies in psychological science by increasing the credibility of research reports
Authors: Kekecs Zoltan
Published: July 2023

This document provides corrections for the paper titled “Raising the value of research studies in psychological science by increasing the credibility of research reports: The Transparent Psi Project” (1). The corrections are in response to the protocol deviations uncovered by a new research audit conducted on this project by James E. Kennedy (2). The audit report lists a number of protocol deviations that were missing or were not explicitly listed as such in the original paper. As noted in the new audit report, these protocol deviations are unlikely to have significant influence on the study conclusions, especially given that the study obtained a null result. Nevertheless, if the study would have obtained a positive result (evidence supporting the ESP hypothesis), some of these protocol deviations would have potentially been more impactful casting doubt on such a controversial finding. In this document corrections are listed for all protocol deviations mentioned in this new audit report.
A research note on the union gradient in parents' childcare time in Germany
Authors: Schulz Florian , Tumeltshammer Sören
Published: July 2023

Objective: To examine differences in time use for primary childcare between single and partnered mothers and fathers in Germany. Background: Facing the task of balancing paid and unpaid work on their own, single parents face different demands and time binds in allocating time for childcare compared to partnered parents. Current evidence how this translates into different patterns of time use for childcare is mixed and nonexistent for Germany. Methods: We applied OLS regression to estimate single and partnered mothers and fathers time use for primary childcare using time diary data of the three surveys of the German Time Use Study from 1991/1992, 2001/2002, and 2012/2013 (n=9,147 diaries for mothers, and n=7,577 diaries for fathers). Results: Single mothers spent more time on primary childcare than partnered mothers, but this negative gradient virtually disappeared over the observation window and was basically nonexistent in the most recent survey. Single fathers spent more time doing primary childcare than partnered fathers, although this finding rested on very small case numbers. Conclusion: Single mothers did not seem to reduce their time for childcare despite competing time binds, whereas single fathers seemed to meet the need of more childcare in the absence of a partner of the opposite gender.
Building Capacity With Evaluation Standards and Guidelines in Prince Edward Island: Responding to Academics’ “Call to Action”
Authors: Cameron Bobby Thomas
Published: July 2023

The purpose of this practice note is to promote knowledge sharing and insight for evaluation practitioners and academics in other jurisdictions by reflecting on evaluation policy development in Prince Edward Island. The author describes the process of developing evaluation standards and guidelines for the Government of Prince Edward Island and the benefits of a systematic development process. The author reviews each phase of the process, including “Identify,” “Consult,” “Study,” “Consensus,” “External Review,” and “Endorsement.” The author concludes that the benefit of developing evaluation standards and guidelines is two-fold: A new resource is added to the government’s evaluation toolkit, and the development process provides an opportunity for capacity and interdepartmental community building.
Doing the Inner Work for Sustainable Practices
Authors: Attipoe-Dorcoo Sharon , Boone Katie
Published: July 2023

In the authors’ evaluation and systems work, they highlight the need to continuously work on our inner selves as a critical facet of our overall practice. By incorporating reflection as a way of practice, the authors are able to tap into their lived experiences as a path of criticality and look beyond competencies to recognize how a mindset of reflectivity impacts their work. The authors are grounded in the Northern Door of the Medicine Wheel because by doing the inner work, they are able to tap into the wisdom of Ancestors and Elders and come to their work grounded, rested, and reflective of all forms of knowing for collective work. Additionally, the authors are also of good mind to work from a place of abundance, rooted in community-centred practices that are not solely for us, but sustainable for future generations that come after us as well.
The Big Short: Expansion of Early Childhood Education in Post-Pandemic Canada
Authors: Seward Brad , Dhuey Elizabeth , Pan Annie
Published: July 2023

La demande d’éducateur.rice.s de la petite enfance devrait augmenter alors que l’économie canadienne s’adapte à la fin de la pandémie de COVID-19 et que de plus en plus de Canadien.ne.s reprennent le travail en présentiel. Pour appuyer cette transition, le gouvernement fédéral a signé des accords bilatéraux avec les territoires et les provinces afin d’investir plus de 30 milliards de dollars dans la création d’un système universel de garde d’enfants à 10 dollars par jour. Ces mesures ambitieuses marquent un jalon dans l’histoire de la garde d’enfants au Canada. Cependant, il est difficile de savoir si le vivier actuel de diplômé.e.s en éducation de la petite enfance (EPE) sera suffisant pour répondre à cette demande accrue. L’analyse de données issues de la plateforme longitudinale entre l’éducation et le marché du travail (PLEMT) permet de dresser le constat selon lequel les personnes diplômées des programmes d’EPE ont tendance à être concentrées dans un nombre relativement restreint de provinces, proviennent principalement de collèges et obtiennent des résultats très modestes sur le marché du travail. Le présent article étudie la transition de carrière des diplômé.e.s en EPE et soutient que la faible rémunération ainsi que son potentiel pour signaler la dévaluation de la main-d’œuvre des services de garde d’enfants sont des facteurs contributifs de l’abandon du domaine par les professionnel.le.s en EPE. De plus, il examine les implications politiques de cette pénurie potentielle de professionnels de l’EPE.
The Thermodynamic Considerations of Biological Evolution; the Role of Entropy
Authors: Deli Eva
Published: July 2023

Although Darwin's theory of biological evolution is the cornerstone of modern biology, it lacks proper physical foundations. We consider ecosystems as closed systems that only exchange energy and information, not matter with the outside. Moreover, predictable and periodic fluctuations in entropy, genetic diversity, population number, and resource availability form a cyclic process that can be analyzed via thermodynamic principles. The sun's energy input drives a reversed Carnot cycle in four phases. The first phase is low entropy, a fast-changing environment spurring genotype-phenotype plasticity. In phase 2, the growing population increases entropy, forming nutrient cycles via symbiotic, parasitic, and predator-prey relationships. In phase 3, competitive and chaotic interactions spread genetic innovations in the overpopulated, stressed ecosystem. Finally, in phase 4, extinction purges the non-evolvable genomes, but the surviving species carry the cycle's genetic innovations on which further evolutionary progression is possible. The sun's energy input is a potent driver of genetic complexity through the cyclic compression and expansion of the ecospace. Using thermodynamic principles, we show that ecosystems conserve genetic complexity. Therefore, intellectual complexity never decreases but increases or remains constant might be a new law of physics, the second law of intellect.
O ensino de Japonês como língua estrangeira através de materiais online autodidáticos e suas possibilidades
Authors: Lima Leonardo Teixeira Miyamoto de , Barbieri Sueli Caraçço
Published: July 2023

A evolução de novas metodologias no ensino de línguas tem traçado novos perfis de alunos, com habilidades desenvolvidas no que o material em especifico pode oferecer. Quando abordamos o tema “autodidatismo” isso se intensifica, pois com um enorme aliado como a internet, a atualização e o acesso a materiais de estudo se tornam extremamente fáceis. Focado no ensino de língua japonesa, o trabalho foi elaborado com uma pesquisa documental relativo ao ensino de japonês como LE e sua utilização hoje como material autônomo em ambiente online. Após um melhor esclarecimento relativo à metodologia, complementou-se com uma pesquisa de campo através de uma entrevista à vários alunos que utilizam como forma de estudo estes materiais disponíveis na internet. Como resultado, junto a uma reflexão sobre o papel do professor a frente a estes materiais, chegou-se a uma melhor compreensão de como estes materiais e as metodologias são utilizados por estudantes autodidatas e universitários, e de que forma são melhor aproveitadas e colocadas em suas rotinas de estudo.
Influence of Pulp Properties on the Adsorption of Cationic Starch
Authors: ZAKRAJŠEK NEJC
Published: July 2023

In most cases, the molecules of a polyelectrolyte such as cationic starch cannot penetrate fiber pores. Therefore, their adsorption depends on the surface properties of fibers and fines. Research has shown that more cationic starch is adsorbed to hardwood than to softwood fibers. A comparison of the properties of both pulp types has determined that the charge on the fiber surface is the key property for the adsorption of cationic starch.
Surface Mechanical Treatment of TMP Pulp Fibers Using Grit Material
Authors: SOMBOON PHICHIT , PAULAPURO HANNU
Published: July 2023

The authors studied surface mechanical treatments of thermomechanical pulp fibers using a grit material after first-stage refining and the treatment’s impact on second-stage refining. The surface mechanical treatment was performed using an ultra-fine friction grinder. The grit size of the grinding stone, the intensity of treatment and the rotational speed were optimized to accomplish rapid development and minimization of pulp fiber shorten-ing. The second stage of refining was carried out using a wing defibrator operated under typical TMP refining conditions. Surface mechanical treatment using a grinding stone with a grit diameter of 297-420 µm, operated at a contact point of the stones and a high rotational speed of 1500 rpm, provided an efficient disruption of pulp fibers with minimized cutting. A promising degree of fiber cell wall fracture was obtained when the energy applied during disruption was approximately 20% of the total refiner energy consumption. During second stage refining the disrupted pulp developed freeness more quickly while requiring 37% less energy. Laboratory sheets showed no significant differences in properties between the disrupted and non-disrupted pulps at a given freeness.
Beneficios del abordaje clínico temprano en pacientes con glaucoma de ángulo abierto
Authors: Reynel Rios Everth Adrian , Cervantes Anaya Luis Alberto
Published: July 2023

El glaucoma de ángulo abierto es una afectación ocular más común y más prevalente en el mundo, por lo general esta enfermedad afecta a personas mayores de 40 años en un 90% de la población. El glaucoma se da cuando la presión intraocular se ve elevada debido a que el conducto se obstruye y el líquido no se puede drenar de manera normal. Este tipo de neuropatía óptica glaucomatosa es muy silenciosa y muchas de las veces no presenta ningún signo o síntoma que alerte a los pacientes, es por esto que es de suma importancia reconocer esta patología ocular en estadios tempranos, mediante un buen diagnóstico acompañado de una buena exploración ocular, con la finalidad de evitar complicaciones, como la pérdida gradual de la vista del lado que se presente la afectación, ya que es una de las principales complicaciones de este tipo de glaucoma. Para esto vamos se va a explicar la importancia del beneficio del manejo clínico temprano del glaucoma de ángulo abierto. Para esto se realizará un estudio no experimental, de tipo narrativo de revisión bibliográfica. Es importante el correcto manejo clínico de los pacientes que padecen de esta oftalmopatía, ya que de esta manera será menos complicado tratarlo de manera temprana, sin que esta evolucione y pueda generar o traer consigo misma múltiples afectaciones, que a la final va terminar deteriorando la vista del paciente y el estilo de vida como tal. Es por esto que es de gran importancia poder diagnosticar de manera oportuna y temprana este tipo de afectación ocular.
Diseño óptimo de una micro-red para maximizar la generación de potencia eléctrica en Paragachi y Wildtecsa modelado en Homer Pro
Authors: Quinteros Flores Jaime Francisco , Yánez Stefany Fernanda , Mendoza Gabriel Alejandro , Vaca Estefanía Alexandra
Published: July 2023

El presente documento aborda la implementación de microrredes eléctricas en distintas locaciones como respuesta a la necesidad de inserción de energías renovables en diferentes sociedades. En la primera etapa se caracteriza el perfil de consumo energético con carga de tipo residencial, comercial o industrial, además de la construcción del perfil mediante el levantamiento de cargas y criterios estadísticos de uso y coincidencia. En la segunda etapa, se analizan los recursos naturales, velocidad del viento y radiación solar disponibles en dos áreas de estudio a través del software especializado Homer Pro con coordenadas de latitud y longitud, por consiguiente, se analiza la viabilidad de los elementos de generación eléctrica renovable y se define el uso. Además, se propone la utilización de varias centrales de generación renovable con el fin de complementar la microrred en aspectos de inercia y estabilidad. Con la demanda de energía y los recursos de generación planteados, se diseñan alternativas arquitectónicas de una potencial microrred para las dos ubicaciones seleccionadas, se realizaron simulaciones para casos interconectados con valores específicos a un entorno y un análisis económico de la implementación, obteniendo la viabilidad de la microrred. Por último, los resultados y las conclusiones obtenidos indican el funcionamiento de cada una de las centrales, cuando trabajan de forma aleatoria, esto en base a que el uso de recursos naturales como el sol y el viento, son recursos ilimitados, pero que no se encuentran presentes a toda hora del día, causando que se busque distintas formas de producir energía eléctrica.
Examination of dark and bright solitons of (2+1)-dimensional Kundu-Mukherjee-Naskar equation via unified solver technique
Authors: ALA Volkan
Published: July 2023

In this study, dark and bright solitons of the (2+1)-dimensional Kundu-Mukherjee-Naskar equation are constructed with unified solver in terms of He's variations method. In accordance with basic properties of proposed technique, some dark and bright solitons are obtained. Moreover, giving specific values to the achieved solutions, 2D and 3D graphics are plotted with the help of software package.The unified solver technique extract vital solutions in explicit way. It is an easy-to-use method applied to obtain various exact solutions of nonlinear partial differential equations arising in fluid mechanics, nuclear, plasma and particle physics.
Protein, Lipid and Carbohydrate-Energy Metabolism Indices in Rats under Acute and Chronic Hypokinetic Stress and their Combinations
Authors: Ravaeva M. Y. , Cheretaev I. V. , Chuyan E. N. , Galenko-Yaroshevskii P. A.
Published: July 2023

This article presents the research findings regarding protein, lipid, and carbohydrate-energy metabolism indices in rats under acute (AS) and chronic hypokinetic stress (HS) and their combinations. HS and its combinations with AS were found to decrease protein metabolism indices to various extents, causing a negative nitrogen balance in the body. HS and its combinations with AS increased lipid metabolism indices, which are the factors of atherogenesis in the body (levels of total cholesterol, triglycerides, low density lipoproteins). HS and its combinations with AS increased the glucose level and decreased the creatinine kinase activity, with the values being statistically significant. AS and HS and their combinations increased significantly the lactate dehydrogenase activity.
Pulseless Electrical Activity: Echocardiographic Explanation of a Perplexing Phenomenon
Authors: Parish David C. , Goyal Hemant , James Erskine , Dane Francis C.
Published: July 2023

Pulseless electrical activity (PEA) is considered an enigmatic phenomenon in resuscitation research and practice. Finding individuals with no consciousness or pulse but with continued electrocardiographic (EKG) complexes obviously raises the question of how they got there. The development of monitors that can display the underlying rhythm has allowed us to differentiate between VF, asystole, and PEA. Lack of clear understanding of the emergence of PEA has limited the research and development of interventions that might improve the low rates of survival typically associated with PEA. Over 30 years of studying and practicing resuscitation have allowed the authors to see a substantial rise in PEA with variable survival rates, based on the patients' illness spectrum and intensity of monitoring. This paper presents a small case series of individuals with brain death whose family members consented to the echocardiographic observation of the dying process after disconnection from life support. The observation from these cases confirms that PEA is a late phase in the clinical dying process. Echocardiographic images delineate the stages of pseudo-PEA with ineffective contractions, PEA, and then asystole. The process is contiuous with none of the sudden phase shifts seen in dysrhythmic events such as VF, VT or SVT. The implications of these findings are that PEA is a common manifestation of tissue hypoxia and metabolic substrate depletion. Our findings offer prospects for studies of the development of interventions to improve PEA survival.
Tricuspid regurgitation: a hidden risk factor for atrial fibrillation related stroke?
Authors: Kim Yong Soo , Jeong Han-Gil , Hwang In-Chang , Kim Beom Joon , Kwon Joon-Myung , Bae Hee-Joon , Han Moon-Ku
Published: July 2023

Background and purpose

Tricuspid regurgitation (TR) is a common but overlooked valvular disease, and its association with the etiologic subtypes of ischemic stroke is unclear. We explored the relationship between TR and atrial fibrillation (AF) in patients with acute ischemic stroke.

Methods

This retrospective analysis of ongoing stroke registry assessed 6,886 consecutive acute ischemic stroke patients who underwent transthoracic echocardiography during their in-hospital care. Multivariable logistic regression models adjusted for age, sex, stroke characteristics, and echocardiographic indices were used to investigate the association between TR and total AF, and newly diagnosed AF during hospitalization and a 1-year follow-up period, respectively.

Results

TR was present in 877 (12.7%) patients (mild, 9.9%; moderate, 2.4%; severe, 0.5%). AF was identified in 24.1% (medical history, 11.1%; first detected in the emergency room, 6.6%; newly diagnosed after admission, 6.4%). TR was associated with AF [adjusted odds ratio (aOR) 4.87 (95% confidence interval (CI), 2.63–9.03)], compared with no/trivial TR. The association between TR and AF was consistent regardless of severity (aOR [95% CI], 4.57 [2.63–7.94] for mild and 7.05 [2.57–19.31] for moderate-to-severe TR) or subtype of TR (5.44 [2.91–10.14] for isolated and 3.81 [2.00–7.28] for non-isolated TR). Among the AF-naïve patients at admission, TR was associated with newly diagnosed AF during hospitalization and a 1-year follow-up period (aOR [95% CI], 2.68 [1.81–3.97]).

Conclusions

TR is associated with AF in acute ischemic stroke patients regardless of severity and subtypes of TR. TR is also associated with newly diagnosed AF after stroke.
Bisphenol A substitutes and obesity: a review of the epidemiology and pathophysiology
Authors: Varghese Shane V. , Hall Julianne M.
Published: July 2023

The prevalence of obesity, a condition associated with increased health risks, has risen significantly over the past several decades. Although obesity develops from energy imbalance, its etiology involves a multitude of other factors. One of these factors are endocrine disruptors, or “obesogens”, when in reference to obesity. Bisphenol A (BPA), a known endocrine disruptor used in plastic materials, has recently been described as an environmental obesogen. Although BPA-free products are becoming more common now than in the past, concerns still remain about the obesogenic properties of the compounds that replace it, namely Bisphenol S (BPS), Bisphenol F (BPF), and Bisphenol AF (BPAF). The purpose of this review is to investigate the relationship between BPA substitutes and obesity. Literature on the relationship between BPA substitutes and obesity was identified through PubMed and Google Scholar, utilizing the search terms “BPA substitutes”, “bisphenol analogues”, “BPS”, “BPF”, “BPAF”, “obesity”, “obesogens”, “adipogenesis”, “PPARγ”, and “adipocyte differentiation”. Various population-based studies were assessed to gain a better understanding of the epidemiology, which revealed evidence that BPA substitutes may act as obesogens at the pathophysiological level. Additional studies were assessed to explore the potential mechanisms by which these compounds act as obesogens. For BPS, these mechanisms include Peroxisome proliferator-activated receptor gamma (PPARγ) activation, potentiation of high-fat diet induced weight-gain, and stimulation of adipocyte hypertrophy and adipose depot composition. For BPF and BPAF, the evidence is more inconclusive. Given the current understanding of these compounds, there is sufficient concern about exposures. Thus, further research needs to be conducted on the relationship of BPA substitutes to obesity to inform on the potential public health measures that can be implemented to minimize exposures.