bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Penambahan Kulit Dan Daging Buah Naga Merah (Hylocereus Polyrhizus) Sebagai Pewarna Pada Pembuatan Stik Bawang
Authors: Pagune Jufrin , I.Laboko Asriani , Adam Veni Alvionita
Published: May 2024

Buah naga adalah salah satu komoditas bernilai ekonomi tinggi dan memiliki strategi yang baik untuk dikembangkan di Indonesia. Limbah yang jarang dimanfaatkan yaitu kulit buah naga merah. Kulit dari buah naga mengandung antioksidan yang cukup banyak, Pemanfaatan pada kulit buah naga yaitu dengan mengekstraknya sehingga dapat digunakan sebagai bahan dasar pangan fungsional. Penelitian ini bertujuan untuk mengetahui (1) pengaruh penambahan kulit dan daging buah naga merah (Hylocereus polyrhizus) sebagai pewarna pada stik bawang terhadap kadar abu, analisis warna, analisis tekstur, (2) mengetahui pengaruh terhadap uji antioksidan dan (3) mengetahui tingkat kesukaan panelis terhadap uji organoleptik. Metode penelitian ini menggunakan rancangan acak lengkap (RAL) dengan 3 perlakuan dan 3 kali ulangan yaitu S0 = tepung tapioka 100 g + tepung terigu 200 g, S1 = tepung tapioka 100 g + tepung terigu 200 g + kulit buah naga 80 g, S2 = tepung tapioka 100 g + tepung terigu 200 g + daging buah naga 80 g. Hasil penelitian menunjukkan bahwa kadar abu tertinggi terdapat pada perlakuan S1 (tepung tapioka 100 g + tepung terigu 200 g + kulit buah naga 80 g) dengan nilai 2.53 % dan terendah terdapat pada perlakuan S2 (tepung tapioka 100 g + tepung terigu 200 g + daging buah naga 80 g) dengan nilai 2.11 %. Analisis warna L dengan tingkat kecerahan terdapat pada perlakuan S0 (tepung tapioka 100 g + tepung terigu 200 g) dengan nilai 57.18 dan yang terendah terdapat pada perlakuan S2 (tepung tapioka 100 g + tepung terigu 200 g + daging buah naga 80 g) dengan nilai 43.85. Analisis tekstur tertinggi terdapat pada perlakuan S0 (tepung tapioka 100 g + tepung terigu 200 g) dengan nilai dengan nilai 6.70 dan yang terendah terdapat pada perlakuan S1 (tepung tapioka 100 g + tepung terigu 200 g + kulit buah naga 80 g) dengan nilai 5.78. Hasil uji organoleptik menunjukkan bahwa tingkat yang disukai panelis pada aroma terdapat di perlakuan S2 dengan skor 3.94, rasa pada perlakuan S2 dengan skor 4.10, tekstur terdapat pada perlakuan S2 dengan skor 3.69, dan warna terdapat pada perlakuan S2 dengan skor 4.59, serta uji antioksidan dari hasil uji sensori yang terbaik terdapat pada perlakuan S2 (tepung tapioka 100 g + tepung terigu 200 g + daging buah naga 80 g) dengan nilai 15.109 ppm.
Comparison of Clinico-pathological and Radiological Parameters of Response to Neoadjuvant Chemotherapy in Breast Cancer
Authors: Hardik Ponkiya, Sandeep Rao
Published: May 2024

Complete histological response following neo-adjuvant chemotherapy (NACT) for breast cancer has great prognostic value. This study would access rates of complete clinical, radiological and pathological response in patients of breast cancer treated with neo-adjuvant chemotherapy.
To Access Rates of Complete Clinical, radiological And Pathological Response in Patients of Breast Carcinoma Being Treated with NACT.
Is Cartilage Shield Tympanoplasty better than Fascia Tympanoplasty
Authors: Shahnaz Sheikh, Anushree Bajaj,Vikrant Vaze
Published: May 2024

Background
Temporalis fascia and cartilage are the most commonly used graft materials, though contradictory reports are available in literature as regards their efficacy in Tympanoplasty. The aim of the study was to compare the graft uptake rates and hearing results in case of temporalis fascia and cartilage in type 1 tympanoplasty
Material and Method
A total of 400 cases with large, subtotal and total perforation were considered in the study. All the selected patients were divided into two groups. Group A in which temporalis fascia graft was used and including 200 cases and cartilage graft was used in group B patients including 200 cases. Pure tone audiometry was performed preoperatively and postoperatively at 3 months, 6 months and 12 months.
Results
The graft uptake rate were more than 90 percent and more than 80 percent in group B respectively at the end of 14 week
Conclusion
From our study we came to the conclusion that both cartilage shield graft and temporalis fascia graft can be used as graft materials independently in Tympanoplasty. But the results of our study suggest that cartilage shield Tympanoplasty can be considered as the first line treatment in chronic otitis media especially with moderate/large/subtotal perforations with good success rate and hearing improvement.
We are celebrating seventy years of Jan Macek
Authors: Benda Daniel , Bogusch Petr , Straka Jakub , Hovorka Tomáš , Holý Kamil
Published: May 2024

Jan Macek, one of the leading personalities of the Czech hymenopterology, celebrated his 70th birthday in 2023. His entire professional career has been associated with the Department of Entomology at the National Museum in Prague (since 2023 officially the National Museum of the Czech Republic), where he worked as a curator of the Hymenoptera Collection. He has already spent a total of 45 years at the National Museum. He is best known to entomologists as a specialist on the Hymenoptera groups Symphyta and Diapriidae, but he is also well known to public as an author of guides to Lepidoptera and Hymenoptera.
Revision of the New Zealand genus Adalmus with description of six new species (Coleoptera: Staphylinidae: Pselaphinae)
Authors: Byeon Ui-Joung , Chandler Donald S. , Leschen Richard A. B. , Park Jong-Seok
Published: May 2024

The monotypic pselaphine New Zealand genus Adalmus Reitter, 1882 (Euplectitae: Trichonychini: Panaphantina) is revised to include eight species. Six new species are described: Adalmus bullerensis sp. nov., A. kanierensis sp. nov., A. karekarensis sp. nov., A. mangamukaensis sp. nov., A. puberilumbus sp. nov., and A. serrilumbus sp. nov. In addition, the genus Dalmisus Sharp, 1886 is placed as a junior subjective synonym of Adalmus and the species Dalmisus batrisodes Sharp, 1886, Plectomorphus longiceps Broun, 1913 and Plectomorphus longipes Broun, 1912 are considered junior subjective synonyms of A. velutinus Reitter, 1885. Adalmus rugiceps (Broun, 1921) comb. nov. is transferred from the genus Plectomorphus Raffray, 1898. Lectotypes are designated for Adalmus velutinus Reitter, 1885 and Dalmisus batrisodes Sharp, 1886. An identification key, descriptions, habitus illustrations, diagnostic characters, a checklist, and distribution maps of Adalmus species are provided.
UMKM Cakap Digital melalui Penerapan E-Commerce: Studi Empiris di Kota Tarakan
Authors: Kartini Kartini , Meylin Rahmawati  , Sulistya Rini Pratiwi  , Rika Wahyuni  , Istianah Asas
Published: May 2024

Measuring the effectiveness of e-commerce implementation is important to ensure online strategies meet MSME business goals. It helps evaluate whether investments in e-commerce are producing expected results, identify areas that need improvement, and adjust marketing approaches to increase sales and customer satisfaction. Effective measurement enables MSMEs to make data-driven decisions, maximize resources and strengthen their competitive position in the digital market. Based on this, this study aims to identify the benefits and barriers and measure effectiveness in implementing e-commerce. The method used in this research is effectiveness and a mix methods approach regarding barriers and benefits. The results show that the most perceived benefit is being able to expand the market, with the highest obstacle being low understanding of technology. The effectiveness ratio of implementing e-commerce in Tarakan City is 73%, which is in the quite effective category. Meanwhile, government support for the implementation of e-commerce by MSMEs is in the ineffective category.
Estrategias de Producción más Limpia en el Proceso Artesanal de Curtición del Cuero
Authors: Delgado Ordoñez Claudia Patricia , Ordoñez Gómez Luz Ángela , Revelo Cuaspud Herman Alberto
Published: May 2024

El Municipio de Belén, ubicado en el Departamento de Nariño, le atribuye el 85% de su economía a la marroquinería y a la curtición de pieles bovinas, para la obtención de cuero. Desafortunadamente, esta industria ha desencadenado una problemática ambiental, caracterizada por el deterioro de los cuerpos de agua, suelos y aire, debido a la naturaleza contaminante de sus residuos. Condiciones como la infraestructura, la organización del proceso productivo y los pocos recursos económicos con los que cuentan las curtiembres del municipio, son un limitante para realizar un adecuado tratamiento de estos desechos antes de su disposición final. En este sentido, la presente investigación se realizó con el fin de determinar estrategias de producción más limpia (PML), para el proceso de curtición artesanal, de una curtiembre del Municipio de Belén. Para lo cual se establece una investigación con enfoque cualitativo, de tipo descriptivo y bajo un diseño de Investigación – Acción. Como instrumentos para la recolección de información se emplearon: la entrevista, la investigación de campo y la revisión bibliográfica. Los resultados obtenidos permitieron alcanzar el objetivo propuesto y las estrategias de producción más limpia establecidas fueron documentadas en una cartilla didáctica, con orientaciones y especificaciones para su posterior implementación.
DESENVOLVIMENTO DE UMA KOMBUCHA DE GUARANÁ (PAULLINIA CUPANA)
Authors: Corrêa Junior Marcio Aparecido Del Barco , Brugnera Danilo Florisvaldo
Published: May 2024

A Kombucha, uma ancestral bebida de origem chinesa, foi introduzida no Ocidente durante a Segunda Guerra Mundial por intermédio dos japoneses. Sua redescoberta no mundo ocidental deve-se à demanda crescente por alimentos funcionais. Esta bebida é o resultado da fermentação anaeróbica e respiração aeróbica de microorganismos presentes no chá de Camellia sinensis, processo mediado por uma cultura simbiótica de bactérias e leveduras chamada de SCOBY.O presente estudo teve o intuito a produção de uma Kombucha original, posteriormente saborizada com xarope de guaraná (Paullinia cupana) a fim de gerar uma bebida de guaraná como um possível substituto ao refrigerante e com os benefícios associados ao consumo de Kombucha. A bebida foi saborizada com 6,55ml de xarope para cada 100ml de kombucha. A análise sensorial demonstrou que a Kombucha de guaraná acrescida com xarope, obteve boa aceitação, comparável ao consolidado refrigerante de guaraná no mercado brasileiro, sugerindo um potencial econômico exploratório. Quanto aos parametros fisico-químicos, obteve-se o resultado de pH de 3,31 e 8,9 ºBrix, que confirmaram a qualidade e segurança do produto desenvolvido. Conclui-se que a Kombucha saborizada com guaraná demonstrou boa aceitação em testes sensoriais, evidenciando a viabilidade da bebida neste estudo e ressalta-se a necessidade de pesquisas adicionais na área tendo em vista a escassez de publicações acadêmicas acerca do assunto.
Mejoramiento de Calidad de Energía con Generación Fotovoltaica en Redes de Baja Tensión en la Ciudad de Juliaca
Authors: Churata Huaraya Juan , Hurtado Arhuata Huber Rony , Montes Apaza Rousell Dario , Torres Yucra Junior , Chuquipiunta Cruz Roel Elmer
Published: May 2024

En este trabajo de investigación de mejorar la calidad de energía con generación fotovoltaica, se realizó el estudio en una subestación de distribución BT5005400 de la ciudad de Juliaca, cuya recolección de información es en la fecha 22 de mayo 2021. Con el objetivo de mejoras la calidad de energía suministrada, se consideró características y factores como: red desbalanceada, la potencia consumida, la potencia del SFCR, ubicación; nivel de irradiancias y cargabilidad; realizando las simulaciones en varios escenarios. Para lograr, se diseñó tres SFCR, en donde se concluye que para efectos de no distorsionar los parámetros de la red se debe usar equipos que tengan certificaciones; también se determinó los parámetros que mayor efecto tiene sobre las variaciones de tensión, y cuáles serían los parámetros óptimos que permitan mantener mejor lo niveles de tensión; este estudio se realizó mediante el análisis factorial fraccionado y optimización de parámetros; de los cuales se determinó que si se puede lograr mejorar los niveles de tensión. En el modelo ajustado se observó que a medida que se aumenta la potencia de generación del SFCR aumenta los niveles de tensión, además es el factor con mayor efecto significativo, con un valor óptimo es de 35.0kW (70% de potencia de la subestación) y la ubicación optima de conexión es más alejada de la subestación. Esta optimización se realizó en el mes de menor irradiancia registrada y la red radial. Para la cargabilidad no se encontró efecto significativo, por lo que no se incluyó en el modelo.
Parenting Style and Resilience among Homosexual in Indonesia
Authors: Kurniasari Ruly Feby , Huwae Arthur
Published: May 2024

This study aims to determine the relationship of parenting styles and resilience in homosexuals (gay) in Indonesia. The research method used is quantitative with correlational design. A total of 454 homosexuals (gay) in Indonesia are used as participants using incidental sampling techniques. The measurement of this study used the Parental Authority Questionnaire (PAQ) scale with fathers’ authoritarian parenting style (α = .868), fathers’ authoritative parenting style (α = .766), fathers’ permissive parenting style (α = .768), mothers’ authoritarian parenting style (α = .868), mothers’ authoritative parenting style (α = .843), mothers’ permissive parenting style (α = .746), and the Resilience Quotient Scale (RQ) (α = .873). Data analysis was conducted using Karl Pearson's product-moment correlation test. The results of this study indicated that there is no relationship between fathers’ authoritarian parenting style and resilience (r = .065 and sig. = .084). Likewise, for the fathers’ authoritative parenting style, it showed no relationship with resilience (r = .003 and the sig. = .472). Similarly, there was no significant relationship found between fathers’ permissive parenting style and resilience (r = -.034 and sig. = .235). The results also revealed that there is no relationship between mothers’ authoritarian parenting style and resilience (r = .008) and sig. = .435). Likewise, no significant relationship was found between mothers’ authoritative parenting style and resilience (r = .005 and sig. = .457). Furthermore, the study found no relationship between mothers’ permissive parenting style and resilience (r = .015 and sig. = .379).
Construct and Criterion Validation of Social Phobia Inventory Indonesian Version
Authors: Rizkia Alfina , Mar'at Samsunuwiyati , Suyasa Fr. Tommy Y. S.
Published: May 2024

Social anxiety disorder or SAD is a condition of abnormal anxiety experienced by individuals when they are facing a social situation. People with SAD usually tend to avoid social situations because they are afraid or anxious of getting a negative evaluation from other people. The negative impact for people with SAD is important for the need for measuring instruments that can detect the symptoms. The lack of SAD measurement tools in Indonesia is the reason why this validation study (SPIN) is important. The Social Phobia Inventory or SPIN is a self-report measurement tool for SAD symptoms and has good both in reliability and validity in several countries. This study aims to prove the validity and reliability of SPIN in Indonesia with 118 participants. The participants include people with SAD and healthy people. The result of this study that they are a convergent validity between SPIN and Social Cognition Questionnaire (SCQ), discriminant validity between SPIN and Patient Health Questionnaire (PHQ) that evaluate eating disorder and alcohol abuse symptoms, and also SPIN have 66% of sensitivity and 100% of specificity using Liebowitz Social Anxiety Scale (LSAS). This study can be used by professionals to assist in determining an objective diagnosis in individuals with symptoms of SAD using SPIN since SPIN is one of the gold standard to measure social anxiety symptoms.
Family Perceptions on Linear Growth in Stunted Children in Wonorejo Village, Malang District
Authors: Rahmatika Qory Tifani , Masfi Ahmad
Published: May 2024

Introduction Indonesia is ranked fifth among countries with the highest burden of stunting children. The role of families becomes very important in understanding and responding the nutritional status of children from the various risks of nutritional problems. This study was aimed to understand caregiver perceptions of child’s stunting.Methods: A qualitative phenomenological approach was conducted. Eleven primary caregivers of stunting children aged 24-60 months were interviewed individually. The recorded interviews were transcribed verbatim and were analyzed using thematic analysis.Results: Two major themes were identified: (i) family perceptions of children’s linear growth; and (ii) family responses in dealing with the growth statusConclusion: Families perceive stunting as a condition of failure to thrive which is characterized by short stature compared to other children of the same age. Families also reported emotional and attitude response upon learning the growth status of toddlers identified as experiencing stunting. The role of health workers is needed to provide emotional and informational supports to families in trying to fulfill nutrition in stunting childrenKeywords: Caregiver Perceptions, Linear Growth Faltering, Nutrition Fullfillment, Stunting
Air Quality Monitoring System: A Comprehensive Overview of an advanced Air Quality monitoring system using Arduino
Authors: Kabilan M.  , Kishore R  , Magesh R.
Published: May 2024

This study focuses on enhancing sensor technology and shrinking the size of sensors utilized in monitoring the quality of atmospheric air. With the escalating concerns over air pollution due to factors such as increased vehicular traffic, industrialization, and urbanization, there is a pressing need for effective monitoring solutions. The innovation at the core of this study involves implementing IoT technology via a Wi-Fi module interfaced with a gas sensor, facilitated by an Arduino UNO microcontroller. Specifically, the study proposes the utilization of the MQ 135 Air Quality Monitoring Gas Sensor for measuring air pollutant concentrations. The setup primarily comprises an Arduino UNO board integrated with an ESP8266 module for IoT connectivity. This IoT which depends on Air Quality Monitoring System is designed to monitor the air quality via a web server using the ESP8266 Wi-Fi device. Additionally, it is equipped to trigger an alarm when air quality deteriorates to a certain level, indicating the presence of harmful gases like CO2. The system displays air quality depends in Parts Per Million categorizing it into Fresh Air, Poor Air, or Danger Air, allowing users to monitor the air condition status effectively.
Impact of Incorporating Silver Nanoparticles (AgNPs) into Collagen-PU-PEG Hydrogels for Superior Antibacterial Efficacy in Severe Wounds
Authors: Mendoza-Villafaña Juan J. , Fuantos-González Valeria E. , León-Campos María I. , Munguía Denis A. Cabrera , Cano-Salazar Lucía F. , Flores-Guía Tirso E. , Galindo Rebeca Betancourt , Claudio-Rizo Jesús A.
Published: May 2024

Wound healing is a complex process often hindered by microbial infections, particularly in severe wounds like diabetic ulcers and burns. Collagen-based hydrogels offer potential solutions but lack mechanical support and antibacterial properties. This study explores the incorporation of silver nanoparticles (AgNPs) into Collagen-Polyethylene Glycol (PEG) hydrogels crosslinked with polyurethane (PU) for enhanced wound healing. The hydrogels, labeled CPEG-Ag, revealed a dense fibrillar structure resulting from an interconnected matrix; they exhibited superabsorbent swelling capacity (up to 2100%), which increased with AgNPs content from 0 to 5 wt.%, with no significant effects on the crosslinking (%). FTIR spectroscopy demonstrated the formation of a semi-interpenetrating polymeric network, chemically linked by urea bonds and physically by hydrogen bond interactions. In vitro cell viability studies showed non-cytotoxic effects on monocytes and fibroblast cells, with the former displaying the best metabolic activity after 48 hours of evaluation, while the latter exhibited high proliferation during the first 24 hours, indicating the safe use of CPEG-Ag hydrogels. The effective antibacterial activity against Gram-negative bacteria, E. coli, was also studied, demonstrating that even low contents of AgNPs are sufficient for significant bacterial inhibition. These results highlight the potential of CPEG-Ag hydrogels for wound dressings, especially in complex wounds, and pave the way for future tissue regeneration applications.
Evolution of Subsonic Shock Waves Associated with Reconnection Jets in Earth’s Magnetotail
Authors: Singh Kuldeep , Verheest Frank , Kourakis Ioannis
Published: May 2024

Motivated by the signatures of nonlinear electrostatic waves observed by the Magnetospheric Multiscale spacecraft mission in reconnection jet regions of Earth's magnetotail, we have explored the dynamical features of ion-acoustic shock waves in the magnetotail. In this investigation, we have examined the dynamics and characteristics of ion-acoustic subsonic shock waves in non-Maxwellian space plasma comprising of two counterstreaming ion beams with suprathermal electrons, assumed to follow a kappa (κ) distribution. A reductive perturbation technique has been adopted to establish an evolution equation for small amplitude electrostatic shock structures. Importantly, subsonic waves only exist when the beam velocity exceeds a certain threshold, beyond which supersonic and subsonic waves may coexist. The combined effects of the beam velocity and the non-Maxwellian electron statistics have been analyzed to examine the characteristics of subsonic shock waves. Both symmetric and asymmetric (in relative beam density) models have been considered, leading to distinct possibilities in the evolution of subsonic shock waves. The findings of the investigation will help unfold the relatively unexplored dynamical characteristics of subsonic shock waves that may form and propagate in the magnetosphere.
Predicting the Slowing of Stellar Differential Rotation by Instability-driven Turbulence
Authors: Tripathi B. , Barker A. J. , Fraser A. E. , Terry P. W. , Zweibel E. G.
Published: May 2024

Differentially rotating stars and planets transport angular momentum (AM) internally due to turbulence at rates that have long been a challenge to predict reliably. We develop a self-consistent saturation theory, using a statistical closure approximation, for hydrodynamic turbulence driven by the axisymmetric Goldreich–Schubert–Fricke instability at the stellar equator with radial differential rotation. This instability arises when fast thermal diffusion eliminates the stabilizing effects of buoyancy forces in a system where a stabilizing entropy gradient dominates over the destabilizing AM gradient. Our turbulence closure invokes a dominant three-wave coupling between pairs of linearly unstable eigenmodes and a near-zero frequency, viscously damped eigenmode that features latitudinal jets. We derive turbulent transport rates of momentum and heat and provide them in analytic forms. Such formulae, free of tunable model parameters, are tested against direct numerical simulations; the comparison shows good agreement. They improve upon prior quasi-linear or “parasitic saturation” models containing a free parameter. Given model correspondences, we also extend this theory to heat and compositional transport for axisymmetric thermohaline-instability-driven turbulence in certain regimes.
Ant-eating spiders from Xizang, China (Araneae, Zodariidae)
Authors: Wang Lu-Yu , Mu Yan-Nan , Lu Feng , Xu Yong-Qiang , Zhang Zhi-Sheng
Published: May 2024

Six species of the ant-eating spider of the family Zodariidae are described from Xizang, China, including five new species: Asceua chayusp. nov. (♀), A. dawaisp. nov. (♂♀), Mallinella migusp. nov. (♂), M. mеdogsp. nov. (♂♀), and M. yadongsp. nov. (♂♀). The female of Cydrela linzhiensis (Hu, 2001) is described here for the first time. Descriptions and photographs of all the species are provided.
Intraoperative Performance and Early Postoperative Outcomes Following Phacoemulsification With Three Fluidic Systems: A Randomized Trial
Authors: Vasavada Vaishali , Agrawal Deepa , Vasavada Shail A. , Vasavada Abhay R. , Yagnik Jignasu
Published: May 2024

Purpose:

To compare intraoperative performance and early postoperative outcomes following phacoemulsification with two systems using active fluidics and one using gravity-based fluidics.

Methods:

In this prospective randomized trial, 200 eyes were randomized to the traditional and Active Sentry groups (n = 80 eyes each) where the Centurion Vision System was used with traditional or Active Sentry (Alcon Laboratories, Inc) hand-pieces, respectively, or the Infinit group (n = 40 eyes) where the Infiniti Vision System (Alcon Laboratories, Inc) was used. Within the traditional and Active Sentry groups, there were two subgroups with low (30 mm Hg) or high (55 mm Hg) intraocular pressure (IOP) used. Outcome measures compared were: cumulative dissipated energy (CDE), percentage change in central corneal thickness (CCT) at 1 day, 1 week, and 1 month, anterior chamber cells at 1 day and 1 week, rate of rise and fall of IOP following occlusion break, corneal endothelial cell density (ECD), and macular thickness 6 months postoperatively.

Results:

CDE was significantly lower in group II compared to the traditional group (2.96 ± 1.4 vs 4.14 ± 2.2,
P
= .001). With 30 mm Hg IOP, the Active Sentry group had significantly less percentage change in CCT at 1 week postoperatively compared to the traditional handpiece group (0.01% vs 0.02%,
P
= .008). Incidence of anterior chamber cells less than grade 2 on day 1 was significantly higher in the Active Sentry group (82.9% vs 52%,
P
= .03). Percentage change in ECD was significantly lower in the Active Sentry group (−0.957 vs −0.98%,
P
= .005). Significantly faster rise of IOP to baseline following occlusion break was seen in the Active Sentry group.

Conclusions:

The use of Active Sentry handpiece was associated with lower CDE, less postoperative increase in CCT, fewer anterior chamber cells, and faster rise of IOP following occlusion break.

[
J Refract Surg
. 2024;40(5):e304–e312.]
Uneven Corneal Epithelial Redistribution After Femtosecond Laser–Assisted Lenticule Intrastromal Keratoplasty in Correcting Moderate-to-High Hyperopia
Authors: Wu Jiawei , Xiong Lu , Zhang Bo , Chen Baihua , Wang Zheng
Published: May 2024

Purpose:

To evaluate the characteristic of corrective epithelial thickness after femtosecond laser–assisted lenticule intrastromal keratoplasty (LIKE) to correct moderate-to-high hyperopia.

Methods:

The prospective case series study of the LIKE procedure was performed to correct moderate-to-high hyperopia. The epithelial thickness map was generated by anterior segment optical coherence tomography (AS-OCT) in the corneal central 9-mm zone. Keratometry and corneal higher order aberrations were analyzed by Pentacam (Oculus Optikgeräte GmbH) preoperatively and postoperatively.

Results:

In the 26 eyes of 13 participants who underwent the LIKE procedure for moderate-to-high hyperopia, the attempted spherical equivalence (SEQ) was +6.50 ± 1.09 diopters (D). Compared to the preoperative epithelial thickness maps, the postoperative epithelial thickness had become significantly thinner in the central 5-mm zone; the difference was 6 to 7 µm. The paracentral epithelium performed nonuniform remodeling; the thinnest epithelial thickness was located in the inferotemporal section, which has the greatest difference from the superonasal; the difference between these two was approximately 3 µm. Through correlation analysis, it was found that the sections with thinner epithelium were significantly related to corneal curvature and corneal vertical coma.

Conclusions:

The LIKE procedure can be used to correct moderate-to-high hyperopia. This study further indicated the epithelial remodeling characteristic after the LIKE procedure: the central and paracentral corneal epithelial thickness becomes thinner, and the epithelial thickness distributes non-uniformly, which may be the important factor of the postoperative curvature asymmetric distribution and induction of corneal vertical coma.

[
J Refract Surg
. 2024;40(5):e321–e327.]
Time optimal problems on Lie groups and applications to quantum control
Authors: Jurdjevic Velimir
Published: May 2024

In this paper we introduce a natural compactification of a left (right) invariant affine control system on a semi-simple Lie group $ G $ in which the control functions belong to the Lie algebra of a compact Lie subgroup $ K $ of $ G $ and we investigate conditions under which the time optimal solutions of this compactified system are "approximately" time optimal for the original system. The basic ideas go back to the papers of R.W. Brockett and his collaborators in their studies of time optimal transfer in quantum control ([1], [2]). We showed that every affine system can be decomposed into two natural systems that we call horizontal and vertical. The horizontal system admits a convex extension whose reachable sets are compact and hence posess time-optimal solutions. We then obtained an explicit formula for the time-optimal solutions of this convexified system defined by the symmetric Riemannian pair $ (G, K) $ under the assumption that the Lie algebra generated by the control vector fields is equal to the Lie algebra of $ K $.

In the second part of the paper we applied our results to the quantum systems known as Icing $ n $-chains (introduced in [2]). We showed that the two-spin chains conform to the theory in the first part of the paper but that the three-spin chains show new phenomena that take it outside of the above theory. In particular, we showed that the solutions for the symmetric three-spin chains studied by ([3], [4]) are solvable in terms of elliptic functions with the solutions completely different from the ones encountered in the two-spin chains.
Procesi u superviziji studenata socijalnog rada
Authors: Vlašić Tatjana
Published: May 2024

ABSTRACT Supervision of social work students as an integral part of the educational process is an integrated way of learning in which social work students apply their theoretical knowledge to field practice, and by reflecting on their experiences from practice in supervision, they improve their professional and personal development. This paper presents part of the results of qualitative research into the process of supervision of students. 10 supervisors of social work students who supervised undergraduate and graduate studies at the Social Work Study Center, Faculty of Law in Zagreb, University of Zagreb participated in the research. The research was conducted using a semi-structured interview method, and data processing used a thematic framework analysis. The results of the research show that supervisors use numerous methods, techniques, models and concepts in their work, emphasizing the educational function of supervision, which ranges from focus on the task to focus on the process of supervision. In terms of feedback, the supportive aspect of supervision dominates. Specific difficulties in supervision are mainly related to the organizational model of conducting field practice and coordination of activities with the educational institution. Also, the paper describes the peculiarities of the student supervision process in relation to other types of supervision that student supervisors recognized in their work. Key words: supervision of social work students; field practice; supervision process.
Doprinos i obilježja usvremenih istraživanja o superviziji u Hrvatskoj
Authors: Ajduković Marina , Urbanc Kristina
Published: May 2024

The motivation for this text are the outcomes of the First research days on supervision that were organized by the Doctoral Program “Social Work and Social Policy” (PDS SWSP) and the Postgraduate University Specialist Study Program “Supervision in Psychosocial Work” in April, 2023. The plenary lecture on the conceptualization of qualitative research on the doctoral level and two panel discussions with doctoral students and their mentors showed that the process of preparation of doctoral theses on supervision is an intense process during which a transition of the roles from supervisors into researchers occurs, with a gradual integration of these two roles into a new, expanded professional identity. Apart from that, the preparation of a qualitative doctoral thesis is often a lonely process accompanied by numerous insecurities, and therefore it is necessary to develop new forms of support for doctoral students that would enable a creative space and time for doctoral students to reflect on the development of their supervisory and scientific-research identity. The analysis of methodological aspects and outcomes of specialist final papers, as well as a panel discussion among supervisors, decision-makers and users of supervision in different systems (e.g. social welfare education, penal system) pointed out the need for further improvements, for example designing more complex research projects in which a team of postgraduate students and their mentors would take part. To maintain the quality of specialist final papers and doctoral theses, methodological workshops for students and mentors are needed. Key words: research on supervision; development of scientific-research identity of supervisors; applied value of research on supervision; workshops for qualitative research.
Development of PBL-Based GLOWASEA (Global Warming on the Sea) Educational Media to Train Critical Thinking Skills on the Topic of Global Warming
Authors: Farikhatul Mutma’innah  , Erti Hamimi
Published: May 2024

The low critical thinking skills of Indonesian students in the 21st century indicate the necessity of training these skills to prepare for a future replete with challenges. Teachers need to innovate learning materials that foster critical thinking skills. This study aims to develop a PBL-based GLOWASEA Edukit media product that is valid, effective, and practical for enhancing students’ critical thinking skills. This developmental research was conducted following the ADDIE model, which comprises five stages: analysis, design, development, implementation, and evaluation. Qualitative data were obtained through comments and suggestions for improvement in questionnaires and interviews. Quantitative data were obtained from the scores on the validation test, practicality test, questions’ validity and reliability test, and pretest and post-test score data. Data were analyzed using percentage analysis and qualitative description. Successively, the results of media and material validation and practicality were 82.61%, 91.17%, and 90.62%. The effectiveness of Edukit media is calculated using the N-Gain formula, resulting in an average score of 0.33, which meets moderate criteria. It can be concluded that the GLOWASEA Edukit media produced is valid, effective, and practical for training students’ critical thinking skills.
An Analysis of Student's Academic Achievement in Genetic Algorithms Based on Mobile Learning Applications
Authors: Li Cemei , Rahman Mohd Nazri Abdul , Zhang Xin
Published: May 2024

Several scholars have focused on this area due to the significance of mobile technology in the educational process, resulting in a substantial body of scholarly work. The primary objective of this study is to investigate the impact of mobile learning on students’ academic performance. The meta-analysis approach was utilized in this research. The available research was examined using several databases to find the relevant studies that were within the scope of the investigation. The study’s inclusion criteria and components were implemented following a literature review. This research proposes a mobile education system approach based on genetic algorithms to address the issues with the current system. The analysis findings indicate that most of them stay at around 10%. The salary only slightly increases when numerous individuals teach, but it also falls within a regular, appropriate range that can accommodate more complex tasks. According to the factor analysis findings, the influence of mobile educational devices on students’ learning performance varied depending on the course and subject. However, it remained constant regardless of the students’ education level and implementation duration. Apart from the previously mentioned research findings, this article also includes a descriptive analysis of the studies that were part of the meta-analysis.
Infinitesimal structure of log canonical thresholds
Authors: Liu Jihao , Meng Fanjun , Xie Lingyao
Published: May 2024

We show that log canonical thresholds of fixed dimension are standardized. More precisely, we show that any sequence of log canonical thresholds in fixed dimension

d

accumulates either (i) in a way which is similar to how standard and hyperstandard sets accumulate, or (ii) to log canonical thresholds in dimension

\leq d-2

. This provides an accurate description on the infinitesimal structure of the set of log canonical thresholds. We also discuss similar behaviors of minimal log discrepancies, canonical thresholds, and K-semistable thresholds.
The limit-point/limit-circle classification for ordinary differential equations with distributional coefficients
Authors: Bhardwaj Varun , Weikard Rudi
Published: May 2024

We investigate the limit-point/limit-circle classification for the differential equation

Ju'+qu=\lambda wu

where

J=\big(\begin{smallmatrix}0&-1\\ 1&0\end{smallmatrix}\big)

and

q

and

w

are matrices whose entries are distributions of order zero with

q

Hermitian and

w

non-negative. We identify the situations when the classical alternative of Weyl works and when it fails.
Quotient graphs of symmetrically rigid frameworks
Authors: Dewar Sean , Grasegger Georg , Kastis Eleftherios , Nixon Anthony
Published: May 2024

A natural problem in combinatorial rigidity theory concerns the determination of the rigidity or flexibility of bar-joint frameworks in

\mathbb{R}^{d}

that admit some non-trivial symmetry. When

d=2

there is a large literature on this topic. In particular, it is typical to quotient the symmetric graph by the group and analyse the rigidity of symmetric, but otherwise generic frameworks, using the combinatorial structure of the appropriate group-labelled quotient graph. However, mirroring the situation for generic rigidity, little is known combinatorially when

d\geq 3

. Nevertheless in the periodic case, a key result of Borcea and Streinu in 2011 characterises when a quotient graph can be lifted to a rigid periodic framework in

\mathbb{R}^{d}

. We develop an analogous theory for symmetric frameworks in

\mathbb{R}^{d}

. The results obtained apply to all finite and infinite 2-dimensional point groups, and then in arbitrary dimension they concern a wide range of infinite point groups, sufficiently large finite groups and groups containing translations and rotations. For the case of finite groups we also derive results concerning the probability of assigning group labels to a quotient graph so that the resulting lift is symmetrically rigid in

\mathbb{R}^{d}

.
Technical Study for the Development of Air Brake Compressor in
Electric Commercial Vehicles
Authors: Dhere Siddhant , Gupta Suryakant , Kumar G. C. Mohan , Reddy Vamsikrishna
Published: May 2024

The development of electric commercial vehicles brought up novel challenges in
the design of efficient and reliable air brake systems. The compressor is one of
the critical components of the air brake system and is responsible for supplying
pressurized air to the brake system. In this study, we aimed to gather essential
information regarding the pressure and flow rate requirements for the compressor
in the air brake system of electric commercial vehicles. We extensively analyzed
the existing air brake systems utilized in conventional commercial vehicles. We
examined the performance characteristics of reciprocating compressors
traditionally employed in these systems. Recognizing the need for novel
compressor designs tailored to electric commercial vehicles, we focused on
identifying the specifics such as efficiency, performance characteristics,
reliability, and cost of the compressor.

Our study utilized theoretical calculations to ascertain the optimal pressure and
flow rate parameters. By thoroughly evaluating vehicle brake standards and
meticulously analyzing relevant data, we gained a comprehensive understanding of
the performance requirements for compressors in electric commercial vehicle air
brake systems. Our analysis considered various factors, including vehicle
weight, stopping distance, and operational conditions, providing valuable
insights into the specific needs of these systems.

The research results serve as the foundation for developing compressors that are
more efficient, reliable, and compatible with electric vehicles equipped with
regeneration capabilities. Ultimately, implementing these improvements will
raise the standard for safety, reliability, and overall performance in the air
brake systems of electric commercial vehicles.
Experimental Analysis of Heat Transfer Post Quenching of Medium
Carbon Steel
Authors: Mutalikdesai Sachin , Shinde Tarang , Nanwatkar Ravikant
Published: May 2024

Transient temperature analysis is involved in the thermal simulation of the heat
treatment process, in which the hot metal temperature changes with respect to
time from an initial state to the final state. The critical part of the
simulation is to determine the heat transfer coefficient (HTC) between the hot
part and the quenching medium or quenchant. In liquid quenching, the heat
transfer between the hot metal part and water becomes complicated and it is
difficult to determine HTC. In the current experimentation a medium carbon steel
EN 9 rod with a diameter of 50 mm and length 100 mm was quenched in water and
ethylene glycol mixture with different concentrations. A part model was created;
meshed and actual boundary conditions were applied to conduct computational
fluid dynamics (CFD) analysis. In order to validate CFD analysis the
experimental trials were conducted. Experimental results showed a reduced
cooling rate for the specimen, and also a reduction in heat-carrying capacity of
the mixture, which is attributed to the addition of ethylene glycol.
Understanding student dropout risk: A qualitative study
Authors: Bilar Jr. Eusebio Aguitong , Montañez Ma. Cristilina Aradillos
Published: May 2024

A qualitative study on understanding student dropout risk was developed due to the increasing number of students leaving school at Dalaguete National High School, Dalaguete, Cebu, Philippines, a problem that the school faces and probably the rest of high schools worldwide. The study used a qualitative approach in multiple cases, a non-probability sampling method, which is the purposive sampling to understand the life of the one hundred fifteen (115) determined grade 9 students dropout risk in the school, their families, and the community. It sought to determine the student’s learning experiences and their influences on the participants’ academic performance. The most common learning experiences of students at risk of dropping out coming from all the participants’ learning experiences pointed out negative peer influences, coming from broken families, economic problems, and school factors that triggered tardiness and absenteeism to being demotivated to participate in all school learning activities. With these findings, an intervention program was proposed to bring back the students’ motivation to stay in school and finish their studies. Completing this study benefitted not only the students but also the school and stakeholders. The researcher is hopeful that the study’s outcomes will lead to continual research on dropout problems in the school, leading to ZERO dropout cases in all schools nationwide.
Senior high school program implementation in Cebu, Philippines: The teachers’ perspectives
Authors: Argate Rex T. , Ferrater-Gimena Judy Ann O. , Sagayno Renato S. , Ortega Moma D. , Mamacos Rithsun J. , Miro Aurora C. , Montenegro Chuchi S. , Janiola Fe R. , Sumalinog Gino G.
Published: May 2024

Senior High School education is one of the salient features of the K to 12 curricula. This study explored the lived experience of the 15 Senior High School (SHS) teachers as direct implementers of the program in the Province of Cebu, Philippines. These teachers have been in service in the Department of Education since the SHS program started. This study was qualitative in nature, and it used the phenomenological research design. It utilized the Interpretative Phenomenological Analysis (IPA) steps for its data analysis method. A semi-structured interview guide was also employed to capture the phenomenon’s essence. After an extensive and careful analysis of the transcribed responses from the interviewees, three themes related to the lived experience of the teachers emerged: 1) noteworthy steps, 2) temporary drawbacks, and 3) teachers’ suggestions for future directions. The findings of the study revealed that the informants had been provided with enough training, evaluation and monitoring, and free Internet connectivity. However, they also experienced the nonuniformity of access to learning materials, difficulty in teaching new courses, and complexity brought about by the mismatched students’ behaviors. For future direction, other researchers may delve into the lived experience of the SHS students.
Study of composition of hydrogels and bioactive zinc (II) MOFs on plant tissue growth
Authors: Campos María I. León
Published: May 2024

In this work, we report the synthesis of metal-organic frameworks (MOFs) using zinc (II) and the amino acids L-phenylalanine (Phe), L-tryptophan (Trp), and L-histidine (His) as ligands. They were incorporated in hydrogel matrixes comprised of collagen, starch, green and red tomato cells to obtain composite hydrogels. The cell migration into the polymer matrices, the resistance to degradation and in vitro biocompatibility of hydrogels was studied. The cell migration assay showed a high confluence of plant cells, indicating a favorable environment for cell migration and proliferation in the presence of MOF-Zn(His) and MOF-Zn(Phe). During a degradation kinetics in vegetable substrate for 10 days, a rapid loss of water was observed in the first two days, indicating a remarkable water absorption capacity in the hydrogels. The results of metabolic activity in red and green tomato cells revealed a significant increase, exceeding 164±12 %, suggesting promising cell development in this type of composite hydrogels. These results support the potential of hydrogels synthesized with MOFs in agricultural and biotechnological applications, opening perspectives for future research and applications in plant tissue engineering.