bluuebunny/crossref_metadata_2025 huggingface dataset:
Do vitamins affect the morphophysiology of lettuce in a hydroponic system?
Authors: Vendruscolo Eduardo P. , Seron Cássio de C. , Leonel Eduardo A. S. , Lima Sebastião F. de , Araujo Suleiman L. , Martins Murilo B. , Sant’ Ana Gabriela R. , Oliveira Janaina J. de
Published: June 2023

ABSTRACT Technologies once applied exclusively in conventional systems have maximized gains in hydroponic systems; however, they still need information for proper use. Thus, the study aimed to evaluate the effect of foliar application of thiamine and niacin on growth and gas exchange activities in two lettuce cultivars in an ebb and flow hydroponic system. The completely randomized design (CRD) was used with four treatments and eight replications. The treatments were as follows: T1 - control, T2 - thiamine at a concentration of 200 mg L-1, T3 - niacin at 200 mg L-1, and T4 - thiamine and niacin combined at 100 mg L-1 of each vitamin. Each experimental plot consisted of a lettuce plant. The combined application of thiamine and niacin stood out, increasing the activity of gas exchange of lettuce plants and increasing by about 30% the fresh mass, concerning the control, for both cultivars, followed by the isolated application of niacin. For thiamine, the application alone did not result in significant changes. The vitamins affect the morphophysiology of lettuce, where the use of niacin has the potential for use in hydroponic production systems. Its combined use with thiamine increases this potential, with a synergistic effect between the compounds being verified.
Cultivation of chicory under nutrient solutions prepared in brackish waters and applied at different temperatures
Authors: Oliveira Tarcísio F. de , Santos Júnior José A. , Silva Mairton G. da , Gheyi Hans R. , Almeida Júlio C. de , Guiselini Cristiane
Published: June 2023

ABSTRACT The cooling of nutrient solutions prepared in brackish water can have several implications for plants grown in hydroponics. In this context, the present study aimed to evaluate the effects of temperature and salinity stresses in the root zone on the growth, water status, production, and leaf characteristics of chicory cultivar Folha Larga, exposed to four values of electrical conductivity of nutrient solution - ECns (1.7, 3.2, 4.7, and 6.2 dS m-1), applied at two temperatures (ambient temperature and controlled in the range between 25-30 °C). The randomized block design arranged in a 4 × 2 factorial scheme with four replications was used. Cooling nutrient solution mitigated effects of salinity on stem height and diameter, number of leaves, and leaf area of chicory; provided greater production and water consumption, stability into root-shoot relationships, and membrane integrity within the saline range studied (1.7 to 6.2 dS m-1).
O discurso iconográfico das imagens de Albert Kahn no Rio de Janeiro (1909): uma questão de posição
Authors: GOMES PAULO CÉSAR DA COSTA , CASTRO BERNARDO JOSÉ ALVAREZ DE
Published: June 2023

RESUMO O artigo trata de um conjunto de imagens, em autocromos, da cidade do Rio de Janeiro. Essas imagens foram produzidas em 1909 por Albert Kahn, criador do projeto Arquivos do Planeta, que tinha como objetivo documentar em imagens o mundo e sua variedade de aspectos culturais tal como ele se apresentava no início do século XX. O objetivo é discutir como esse conjunto de imagens constitui um discurso iconográfico sobre a cidade do Rio de Janeiro por meio da análise dos elementos que aí figuram, das escolhas de ângulos, de enquadramentos e de pontos de vista. A análise composicional das imagens permitiu interpretar a construção de sentido nesse discurso: uma cidade construída entre o mar, a montanha e a densa vegetação.
ENTRE FUTEBOL E ESCOLA: UMA ANÁLISE BOURDIEUSIANA SOBRE DUPLA CARREIRA NO BRASIL
Authors: Souza Iuri Salim de , Oliveira Marcelo Alberto de , Marques Renato Francisco Rodrigues
Published: June 2023

RESUMO Estudantes-atletas de futebol são expostos ao desafio de conciliação entre as carreiras esportiva e acadêmica. Essa situação de dupla carreira impõe tensões que podem resultar em evasão ou mal desempenho. Nosso objetivo foi analisar os desafios de estudantes-atletas de futebol no Brasil na conciliação entre as carreiras acadêmica e esportiva. Considerando a dupla carreira como um problema social, este ensaio é fundamentado na literatura sobre esse fenômeno e em categorias da sociologia reflexiva de Pierre Bourdieu. Como principais resultados, tem-se que a recorrente priorização da carreira esportiva se relaciona: às origens socioeconômicas dos indivíduos; ao poder simbólico dos clubes sobre as escolas; à busca por ascensão social; aos sistemas esportivo e escolar que reproduzem desigualdades.
Gastrointestinal parasites in bullfrogs (Lithobates catesbeianus) in aquaculture production units in the Mexican central highlands
Authors: Hernández-Valdivia Emmanuel , Islas-Ojeda Efraín , Casillas-Peñuelas Rafael , Valdivia-Flores Arturo , García-Munguía Alberto
Published: June 2023

Abstract In Mexico, intensive production of bullfrogs is one of the most important aquaculture activities, due to growing demand for their meat. Frogs can be hosts for several parasites that negatively affect their development and health. The objective of this study was to identify the presence of intestinal parasites in bullfrogs in aquaculture production units. Eighteen bullfrogs aquaculture production units were selected, and 20 animals (n=360) from each farm. Fecal samples were obtained by mucosal scraping and processed using the concentration method. The overall prevalence of intestinal parasites was 70.5%, and all farms had frogs infected by some species of parasite. Two species of parasites were identified: Eimeria sp. and Strongyloides sp. Significant differences were found regarding parasite prevalence between males and females (73.8% vs 58.8%) and regarding tibia length (5.5 vs 6.1 cm) and weight (168 vs 187 g) between parasitized and non-parasitized frogs. In conclusion, the present study showed a high prevalence of intestinal parasites, and morphometric alterations (weight, snout-cloaca length, radio-ulna length, tibia length and distance between parotid glands) were identified in the parasitized animals. These results provided useful information that will enable establishment of adequate control measures to help minimize the adverse effects of these parasites.
Morphological and molecular characterization of Contracaecum australe (Nematoda: Anisakidae) parasitizing Phalacrocorax brasilianus (Aves: Phalacrocoracidae) on the north coast of Brazil
Authors: Santana Ricardo Luis Sousa , Carvalho Elaine Lopes de , Sindeaux Neto José Ledamir , Silva Michele Velasco Oliveira da , Pinheiro Raul Henrique da Silva , Gonçalves Evonnildo Costa , Giese Elane Guerreiro
Published: June 2023

Abstract For the first time in Brazil, Contracaecum australe is recorded parasitizing Phalacrocorax brasilianus (Aves, Suliformes, Phalacrocoracidae) from the Marine Extractive Reserve of Soure on Marajó Island, Brazilian Amazon. Its morphology revealed a body with a transversally striated cuticle, smooth or slightly cleft interlabia, lips with auricles, labial papillae, and conspicuous amphids. In males, the presence of the median papilla on the upper lip of the cloaca and spicules that reach almost half of the body of the parasite. These morphological characters, added to the number and distribution of the pre- and postcloacal papillae of the male specimens, and supported by the molecular phylogeny from the analysis of the ITS-1, 5.8S and ITS-2 genes, allowed the identification of these parasites.
Spor bilimleri fakültesi öğrencilerinin boş zaman yönetimi ve sıkılma algılarının incelenmesi
Authors: YAĞAR Gül , CERİT Emrah , ÜNLÜ Çisem
Published: June 2023

Zamanının etkili ve verimli değerlendirilmesi, boş zaman algılarının da olumlu yönde etkilemekte özellikle geleceğin şekillendiği üniversite yaşamında, boş zaman yönetimi ve sıkılma algısını anlayabilen bireyler günlük yaşamda ve iş hayatında birçok kazanç elde etmektedir. Bu sebeple çalışma, Spor Bilimleri Fakültesi öğrencilerinin boş zaman yönetimi ve sıkılma algılarını incelemeyi amaçlamaktadır. Veri toplama aracı olarak, kişisel bilgi formu, “Boş zaman Sıkılma Algısı Ölçeği (BZSAÖ)” ve “Boş Zaman Yönetimi Ölçeği (BZYÖ)” kullanılmıştır. Analiz sonuçlarında, cinsiyet değişkenine göre “sıkılma”, “amaç belirleme ve yönetim” ile “değerlendirme” alt boyutlarında istatistiksel açıdan anlamlı fark tespit edilmiştir (p
Effect of 8 Weeks of Combined Plyometric Training on Increasing Lower and Upper Body Muscle Power in Student Volleyball Athletes
Authors: Muhammad Muhammad , Kusnanik Nining Widyah , Pramono Bayu Agung
Published: June 2023

The study purpose was to identify the effects of a combination of plyometric exercises in the increasing leg and arm power abilities of volleyball athletes. Materials and methods. Forty students were involved in this study. They were students who were active in practicing volleyball, and then they were divided into four groups of 10 students each, namely (1) Squat thrust jumps and clap push-ups, (2) Squat thrust jumps and lateral push-ups, (3) Rope jumps and clap push-ups; and (4) Rope jumps and lateral push-ups. Then they practiced plyometrics three times a week for eight weeks. Statistical analysis used the t-test and the N-Gain Score using the Statistical Package for Social Science (SPSS) version 26 program. Results. The results of the combination of plyometric exercises stated that it had an effect on the muscle power of both the legs and arms (p<0.05); then, the results showed the combination of squat thrust and lateral push-up exercises was effective in increasing the ability of leg muscle power by 84.43% while the variety of squat thrust jump exercises and clap push-ups provide effectiveness in increasing arm muscle power by 25.23%. Conclusions. The variety of these two types of plyometric exercises was successful in helping volleyball athletes improve their vertical jump abilities. Still, from the results of this study, it was not very effective in increasing the capacity of arm muscle power.
Dynamics of Initial Swimming Readiness of Junior School Children in the School Sports Club
Authors: Shkrebtiy Yuriy , Korolchuk Bohdan , Nosova Nataliia , Huzak Oleksandra , Lazakovych Yuliia , Rodionenko Mykhaylo , Plyeshakova Olena
Published: June 2023

The purpose of the study was to estimate the effect of swimming lessons in a school sports club on the initial swimming fitness of primary school-aged children.
Materials and methods. The study participants were 73 primary school-aged children (‘Sportrend’ school sports swimming club). The study used theoretical analysis of scientific and methodological literature, the system of control exercises by O. Obrazhei revised taking into account the contingent of the research to assess the swimming fitness of primary school students under the conditions of a school sports club, and methods of mathematical statistics.
Results. We propose a methodology for assessing the swimming readiness of younger schoolchildren under the conditions of a school sports club. The growth rate of such indicators as reaction to the unsupported position in the water and underwater breath-holding turned out to be lower compared to other indicators. At the same time, the rates of face submersion in the water and squatting in the water increased. The increase in initial swimming skills in children was 49.3% at the control stage compared to the baseline, and the average growth rate was 22.2%. In the assessment of children’s initial skills at the end of the training compared to the beginning, the maximum average rate of increase was recorded for the ability to push off and slide (30.1%), the ability to perform a star float (27.4%), and squatting in the water (26.4%), thus swimming lessons have a positive effect on the initial swimming readiness of junior school students.
Conclusions. Statistically significant (p<0.05) improvement of primary school students’ results on control exercises at all stages of diagnostics of their initial swimming skills formation confirms the positive effect of swimming lessons in a school sports club.
Effect of Camera Resolution on the Determination of Mechanical and Multiple Crack Properties of Engineered Cementitious Composites via Digital Image Correlation
Authors: GÖDEK Eren , TOSUN FELEKOĞLU Kamile
Published: June 2023

In this study, the effect of image resolution on the determination of mechanical parameters and multiple crack properties of Engineered Cementitious Composites (ECC) was investigated by digital image correlation (DIC). For this purpose, low and high resolution images were captured during the tensile loading of ECC by using two cameras simultaneously. DIC analyzes were performed on the images and results were compared both within themselves and with the traditional method. Mechanical parameters have been successfully calculated with DIC analysis and consistent values obtained with traditional methodology. However, high resolution images were found to be more effective for detecting pattern properties than low resolution images. It resulted in low strain error when using high resolution images compared to low resolution images in DIC analysis. Finally, when the high resolution images were used in DIC analysis as opposed to the low resolution images, both the detected number of cracks and calculated crack widths were obtained accurately. This situation was proven by local strain maps provided by DIC.
Análisis de la velocidad y precisión en el saque en jugadores de pádel amateur
Authors: Sánchez-Pay Alejandro , Escudero-Tena Adrián , Martínez Nieto Francisco Javier , Muñoz Diego , Sánchez-Alcaraz Bernardino Javier
Published: June 2023

El objetivo del presente estudio fue analizar la velocidad y la precisión en el saque de jugadores pádel amateur según las categoría y experiencia de los participantes; así como según lado y dirección. Para ello, se analizó la velocidad y la precisión de 1152 saques, registrando el lado (derecho e izquierdo) y dirección (cristal y a la “T”). Dichos saques, fueron realizados por 48 jugadores amateurs (cada jugador realizó 24 saques), de los que se registró sus horas de entreno por semana, su experiencia y su categoría de juego. Los resultados obtenidos indican que la velocidad del saque en jugadores de pádel amateurs va incrementando según aumenta la categoría del jugador desde infantil (: 55.85 ± 6.67 m/s), cadete (: 58.57 ± 7.00 m/s), juvenil (: 62.18 ± 5.30 m/s) hasta la categoría absoluta (: 69.95 ± 6.62 m/s). Por otro lado,las horas de entreno por semana influye en la velocidad y precisión del saque, pues a más horas de entreno más velocidad y precisión de saque. Igualmente, a más experiencia más precisión en el saque. Estos hallazgos tan novedosos pueden ayudar a los entrenadores a saber que pueden exigir a sus jugadores en el saque según sus características.
Influence of game side court on haematological and urinary biomarkers in professional padel players
Authors: García-Giménez Alejandro , Pradas Francisco , Toro-Román Víctor , Castellar-Otín Carlos
Published: June 2023

Purpose: to analyze the influence of game side on court in haematological and urinary biomarkers after a simulated padel competition (SC) attending to possible gender differences. Method: pre- and post-SC serum creatinine, urea and creatine kinase (CK), and urine specific gravity and erythrocytes of twenty-nine professional padel players (16 women, 13 men) were quantified. A two-way ANOVA was used to show any differences in the studied variables (p values < 0.05). Results: significant differences were found before and after the SC for creatinine (p < 0.05) and erythrocytes (p < 0.01). Differences were found for creatinine (p < 0.001), CK (p < 0.01) and specific gravity between sexes (p < 0.05). No game side court effect was found. Conclusion: padel SC produced an increase in serum creatinine and hemolysis, probably caused by game dynamics. Sex differences were found in serum creatinine and CK, presumably due to anthropometric gender differences. Both sexes finished the SCs in a dehydrated state, affecting it more to men, something which should be considered to prevent and alleviate its potential negative effects in performance. More studies should be carried out to confirm these data.
El pádel como deporte escolar. Inclusión en las clases de Educación Primaria
Authors: Cachón-Zagalaz Javier , Sánchez-Zafra María , Sanabrias-Moreno Déborah , Lara-Sánchez Amador
Published: June 2023

Antecedentes: Este artículo, que se puede considerar dentro de las revisiones y experiencias, trata del estudio del pádel como un deporte a enseñar en la etapa de la Educación Primaria por sus beneficios sobre la salud y efectos fisiológicos positivos en programas de actividad física colectivos o de carácter social. El pádel es reconocido científica y académicamente y su práctica es mayoritaria en España por su gran poder socializador que lo sitúa entre uno de los siete deportes más practicados y el cuarto con más licencias federativas en nuestro país. Objetivos: Contabilizar el interés que despierta el pádel en la investigación (tesis doctorales). Comprobar si el pádel se practica en los centros escolares y despierta interés entre el alumnado de Educación Primaria, así como plantear un proyecto de intervención. Material y métodos: El estudio comienza con una revisión de las tesis doctorales defendidas (TESEO) hasta ahora cuyos contenidos están en su mayoría lejos de la educación. Continúa, contactando con los centros de Educación Primaria para comprobar mediante las opiniones del profesorado y la observación de las clases, si el pádel se enseña y practica en dicha etapa de la enseñanza. Termina con el planteamiento de un proyecto de intervención didáctica que incluye el pádel como deporte a practicar en Educación Primaria. Resultados y conclusiones: El pádel es un deporte que presenta una técnica, táctica y estructura temporal determinadas, diferente a otros deportes de raqueta. Es una modalidad deportiva importante en nuestra sociedad, pero no se enseña en los centros educativos. La propuesta didáctica que recoge este estudio ha sido presentada en los colegios para facilitar su enseñanza.
Student Engagement in Student Support System Reform: A Case Study
Authors: Jang Yena , Kim Seo Yoon , Kang Ji Yoon , Kang Donghwa , Kweon Na Hyeon , Kim Ga Yeon , Kim Narae , Kim Sang Hun , Kim Seongwoo , Kim Juhee , Kim Chae Yeon , Park Shinyoung , Park Ju Yeon , Park Ji Su , Lee Geon Ho , Im Bora , Yoon Bo Young
Published: June 2023

Educational evaluation involves data collection and the analysis of various education-related factors to make decisions that improve educational quality. Systematic educational evaluation is essential for enhancing the quality of education. This study reports a case of student-conducted process evaluation of a medical school’s student support system and the procedure for devising improvement plans. Sixteen Inje University College of Medicine students participated in the Education Evaluation Committee (IUCM-EEC) to understand the educational improvement process as learners and actively achieve improvement. The Quality Improvement Committee of the Inje University College of Medicine (IUCM-QIC) decided to reform its student support system based on a previous educational evaluation in 2019. The evaluation of the student support system was conducted for 10 months in 2021 by the student subcommittee, under the guidance of the IUCM-EEC. The CIPP (context-input-process-product) evaluation model was used for a systematic evaluation. Accordingly, the subcommittee developed evaluation criteria and indicators, and analyzed relevant data collected from surveys and the previous literature. For further recommendations and revision ideas, the student subcommittee members interviewed faculty members from six other medical schools and also conducted a focus group interview with the dean and vice deans of IUCM. Finally, the student subcommittee submitted a report to the IUCM-QIC. Communication with various stakeholders is essential for a successful evaluation process. In this case, students, as key stakeholders in education, evaluated the student support system. Their active participation helped improve their understanding of the evaluation process.
The Mediating Role of Anger Rumination in the Relationship between Job Stress and Problem Drinking among Community-Oriented Police Officers
Authors: Jang Dawon , Hyun Myoung-Ho
Published: June 2023

Background: This study investigated the mediating effect of anger rumination in the relationship between job stress and problem drinking among community-oriented police officers.Methods: The study participants were 107 community-oriented police officers working in local police stations and substations in the Seoul-Gyeonggi area. Participants completed the Police Job Stress Scale, Anger Rumination Scale (K-ARS), and Alcohol Use Disorder Identification Test (AUDIT). Data was collected from September to October 2022, and the mediation analysis was performed using SPSS PROCESS Macro model 4.Results: Analysis showed that anger rumination fully mediates the relationship between job stress and problem drinking among community-oriented police officers.Conclusions: This study emphasizes the importance of interventions or treatments that address both job stress and anger rumination for community-oriented police officers with alcohol-related problems. Such interventions can contribute to preventing and managing problem drinking that threatens the well-being of individual police officers and the police organization.
The Dual Mediation Effect of Evaluative Concerns Perfectionism and Mindfulness in the Relationship between Temperament and Depression among Office Workers
Authors: Park SeoYeon , Cho Yejin , Hyun Myoung-Ho
Published: June 2023

Background: This study investigates the dual mediation effect of evaluative concerns perfectionism and mindfulness in the relationship between temperament and depression among office workers.Methods: 220 Korean office workers completed online surveys measuring levels of FCB-TI perseveration (PE) and emotional reactivity (ER), evaluative concerns perfectionism, mindfulness, and depression.Results: The data analysis results showed that evaluative concerns perfectionism and mindfulness both mediated the relationship between temperament types and depression. Additionally, evaluative concerns perfectionism and mindfulness had dual mediating effect between temperament and depression.Conclusions: Based on the results of this study, PE and ER temperament could increase the level of evaluative concerns perfectionism, decreasing the level of mindfulness and increasing the risk of depression. The findings highlight the potential value of mindfulness-based interventions focusing on alleviating perfectionism concerning others’ evaluation for preventing and treating depression in office settings.
The Forks Market: Cosmopolitan Canopy, Conviviality, and Class
Authors: Bookman Sonia
Published: June 2023

This article contributes to scholarship on the varieties of co-existence expressed in urban public life by providing an analysis of cosmopolitan conviviality as it surfaces in the branded public space of The Forks Market in Winnipeg, Canada. Recently renovated to create an intimate food hall, the Market is framed as a “commons” to encourage sociability among patrons. It is also configured as an inclusive space where an urban multicultural clientele can gather and share in a variety of foodways. Drawing on empirical observational research, and paying attention to the Market’s material affordances, I argue that Forks Market patrons co-perform a kind of cosmopolitan conviviality comprising two key components: (a) convivial sociability, and (b) cosmopolitan openness. Exploring tensions between inclusivity and exclusivity, however, I maintain that such conviviality is marked by ambivalence linked to the Market’s operation as both a “cosmopolitan canopy” and a branded space with an emphasis on consumption. In particular, I consider how the “look” of the Market conveys a sense of authenticity with an “upscale” design oriented toward middle-class tastes.
Implementing data warehouse infrastructure for an e-learning system
Authors: GÜNEŞ İhsan , BİRGİN Mustafa Kemal
Published: June 2023

The use of a data warehouse (DW) in e-learning applications helps us evaluate students from different perspectives. Depending on user behavior, we may change the content or appearance of the e-learning platform to achieve the best results. The aim of this study is to build a data warehouse infrastructure, which is a central information system for Anadolu University's distance education system. Thanks to the data warehouse project, all learners’ activities in the Learning Management System (ÖYS: Anadolum e-Kampüs) will be recorded regularly. Various analytical reports were obtained about students' study styles, preferred e-learning resources, and the time spent in the system. Additionally, the data warehouse system regularly pulls information from other information systems, such as the student information system related to the open education system. Data warehousing is designed to combine data from multiple sources into a single unified view, rather than performing operational operations like a database. Generally, data warehouses are used for analytical processing as opposed to transaction processing. They are used to analyze historical data and trends, as well as to identify patterns and insights that can aid in informing business decisions. When analysis and reporting is done in a different environment using data warehousing, there is no additional load on the database, which is already busy with daily operational processes. The data warehouse has made it easy to obtain student analytics for various periods, including daily, monthly, and yearly. The reports provided through this infrastructure are used in studies to increase the quality of the LMS system.
GNSS hızlarında kümelemeden topluluk kümelemesine: Meta-kümeleme odaklı bir yaklaşım
Authors: ÖZARPACI Seda , KILIÇ Batuhan , KÖKÜM Mehmet , DOĞAN Uğur
Published: June 2023

Kıtasal deformasyonları anlayabilmek ve yorumlayabilmek için farklı yaklaşımlar ve modeller bulunmakta olup, bunlardan biri de blok modelleme yöntemidir. Blok modelleme yardımıyla plaka hareketleri, kayma hızları, faylardaki kilitlenme derinlikleri, Euler kutbu gibi parametreler belirlenebilmektedir. Ancak, blok sınırları ne kadar iyi belirlenirse, modelleme sonuçları o kadar gerçeğe yaklaşmaktadır. Blok modellemenin en önemli adımlarından biri blok sınırlarının tespiti olup, kümeleme işlemi bunun için bir araç olarak kullanılabilmektedir. Kümeleme analizi, kümelemeye konu verideki benzerlik ve farklılıklara dayanarak veriyi benzer gruplara atamaktadır. Bu çalışmada, çalışma alanı olarak Türkiye belirlenmiştir. Bu kapsamda Türkiye'nin en güncel Küresel Navigasyon Uydu Sistemi (Global Navigation Satellite Systems – GNSS) hız alanı topluluk kümeleme algoritması ile kümelenmiş ve bu hız alanına uygun blok sınırları belirlenmiştir. Türkiye için %22’si sürekli ve %78’i kampanya tipi verilerden oluşan GNSS gözlemlerinin birarada değerlendirilerek güncellenmiş hız alanı ilk defa bu çalışma ile kümelenmiştir. Kümeleme öncesinde üç ayrı yöntemle, Davies-Bouldin, Gap (gap istatistiği) ve Silhouette ile, veriye en iyi uyum sağlayan optimum küme sayısı (GNSS hız alanına en uygun küme sayısı) tespit edilmiştir. Daha sonra, k-ortalamalar, HAC ve spektral kümeleme teknikleri kullanılarak güncel GNSS hızları kümelenmiştir. Son olarak, Meta-Kümeleme Algoritması (Meta-CLustering Algorithm - MCLA) olan topluluk kümeleme tekniği ile güncel hız alanı yatay bileşenleri kümelenmiş ve sonuçlar paylaşılmıştır.
Investigation of changes in geomechanical properties of sandstones under different saturation and anisotropy conditions: Example from Gümüşhane (NE Türkiye)
Authors: GÜLTEKİN Zarife , DAĞ Serhat
Published: June 2023

In this study, the changes in various geomechanical properties were studied for sandstones cropped out at the Mescitli region of the Gümüşhane city under different saturation and anisotropy conditions. For this purpose, 225 specimens were prepared considering the lamination planes of those were chosen to have orientation of 0, 30, 45, 60 and 90° relative to loading direction. Index properties of the sandstones such as dry unit weight (dry), saturated unit weight (sat), water absorption by weight (Aw) and water absorption by volume (Av) were assigned. In accordance with the objective of study P wave velocity, uniaxial compressive strength and indirect tensile strength values were determined based on different saturation and anisotropy conditions. It was noted as a result of the observations carried out that specimens parallel to lamination have higher wave velocities in general when compared with specimens that are perpendicular to lamination planes. While uniaxial compressive strength values for sandstones are high for specimens which are parallel and perpendicular to lamination, the lowest strength value was observed in specimens with an anisotropy angle of 30°. In addition, it was also observed that the strength values decrease at a significant level with increasing saturation conditions. Strength anisotropy ratio (RUCS) for sandstones varies between 1.28–1.49 based on different saturation conditions. Similarly, while indirect tensile strength values were higher in specimens that were parallel and perpendicular to lamination, they were lower for other anisotropy orientations. Indirect tensile strength values also decreased with increasing degree of saturation.
Bazalt fiber kullanımının düşük plastisiteli kilin serbest basınç dayanımı üzerindeki etkisi
Authors: GÜROCAK Zülfü , ASLAN TOPÇUOĞLU Yasemin
Published: June 2023

Düşük dayanıma sahip killerin dayanımlarını artırmak amacıyla yapılan ve stabilizasyon olarak adlandırılan güçlendirme işlemlerinde farklı katkı malzemeleri kullanılmaktadır. Bu malzemelerden en yaygın olarak kullanılanları ise fiberlerdir. Son yıllarda, maliyetlerinin düşük, dayanımlarının yüksek ve kolay ulaşılabilir olmalarından dolayı zeminlerin güçlendirilmesinde fiberlerin kullanılması, geleneksel kimyasal stabilizasyon yöntemlerine bir alternatif olarak araştırmacıların dikkatini çekmektedir. Farklı türleri olan fiberlerden bazalt fiberlerin kullanımı ekonomik ve çevreci olmaları nedeniyle artmaktadır. Bu çalışmanın amacı, bazalt fiberin kaolin kilinin dayanımı üzerindeki etkisini araştırmaktır. Farklı oranlarda (kuru ağırlıkça %0, 1, 2 ve 3) bazalt fiberin farklı su içeriklerindeki (%20, 25, 30 ve 35) zemine eklenmesiyle zeminin dayanımında meydana gelen değişimleri incelemek için serbest basınç deneyleri yapılmıştır. Deneysel çalışmalar sonrasında kile %25 oranında su ve %1 oranında bazalt fiber eklenmesi sonucu serbest basınç dayanımının maksimum olduğu belirlenmiştir. Çalışmanın sonuçlarına göre başarılı bir güçlendirmede fiber oranı ile birlikte su oranı da büyük bir etkiye sahiptir.
Trifloxystrobin Pretreatment Alleviates Excessive Copper Stress in Wheat (Triticum aestivum L.)
Authors: Macar Oksal , Kalefetoğlu Macar Tuğçe , Karaköy Tolga
Published: June 2023

Protective role of Trifloxystrobin pretreatment against excessive copper-related abiotic stress in Triticum aestivum L. was determined in two Turkish wheat cultivars, Sönmez and Gerek 79. Ten-day-old seedlings were pretreated with 20 µM and 80 µM Trifloxystrobin. A group of seedlings was harvested without exposure to Trifloxystrobin as a control. Two days after, seedlings were treated with copper(II) chloride. Seedlings were harvested on the 20th day after sowing. The growth level of the groups was evaluated by measuring the length, fresh weight and shoot dry weight of shoots. Chlorophyll a + b, carotenoid and anthocyanin contents as well as proline levels were assessed. Lipid peroxidation and total activities of superoxide dismutase, peroxidase and glutathione reductase were analyzed to predict the oxidative stress levels. Both cultivars exhibited similar responses to the treatments. Trifloxystrobin doses did not cause damage on plants when applied alone. Seedlings subjected to excessive doses of copper showed significant reductions in growth parameters, as well as chlorophyll and carotenoid pigments. Conversely, copper caused a remarkable increase in anthocyanin, proline and malondialdehyde accumulation. Superoxide dismutase and peroxidase activities increased, while glutathione reductase activity decreased in copper-stressed plants. Trifloxystrobin pretreatment strengthens the antioxidant defense system. All parameters were positively affected by Trifloxystrobin pretreatment. As the dose of Trifloxystrobin increased, the severity of stress decreased in both genotypes. Trifloxystrobin pretreatment is a promising method for reducing copper-induced damage in T. aestivum.
Parametric Extension of a Certain Family of Summation-Integral Type Operators
Authors: Odabaşı Nadire Fulda , Yüksel İsmet
Published: June 2023

In this paper, we introduce a parametric extension of a certain family of summation-integral type operators on the interval [0,∞). Firstly, we obtain test functions and central moments. Secondly, we investigate weighted approximation properties for these operators and estimate the rate of convergence. Then, we give a pointwise approximation for the Peetre K-functional and functions of the Lipschitz class. Moreover, we demonstrate Voronovskaja type theorem for the operators. Finally, the convergence properties of operators to some functions are illustrated by graphics.
Comparative Estimation of Global Solar Radiation over Two Nigerian Cities, Using Artificial Neural Network and Empirical Models
Authors: Olatona Gbadebo İsmaila , Ajilore Oluwapelumi , Mutiu Alani Fakunle , Olaniyi Paul , Tosin Makinde
Published: June 2023

The estimation of solar radiation intensity has been a focus of many researchers due to the cost of setting up its actual measurements. While many of them employed empirical models, this study utilizes the artificial neural network for the analysis and estimation of global solar radiation over two Nigerian cities. The model developed using sunshine hours, temperatures and relative humidity were compared with the existing empirical models. Model performance indicators comparing the measured data and the computed data for the derived and selected models, using the same number of input meteorological parameters showed that ANN having average values of RMSE, MBE, and MPE of 0.0744 MJm-2day-1, -0.0020 MJm-2day-1, and -0.0043%, respectively, performed slightly better. When different number of input meteorological parameters were used, the ANN gave the following error indicators for RMSE, MBE, MPE of 0.0394MJm-2day-1, -0.0023MJm-2day-1 and -0.0144% respectively. Also, in the result of solar radiation in Abuja, using the same number of meteorological parameters, the model with the best performance in the estimation of solar radiation is the ANN model with average values of RMSE, MBE, MPE of 0.1301MJm-2day-1, 0.0053MJm-2day-1 and 0.0441% respectively. Hence, the models are versatile for predicting global solar radiation in locations in the same climatic zones as locations studied in this study, where direct measurements of solar radiation is scarce and widely separated but there is availability of commonly measured meteorological parameters such as sunshine duration, minimum temperature, maximum temperature and relative humidity.
The Intersection of Two Ruled Surfaces Corresponding to Spherical Indicatrix Curves on the Unit Dual Sphere
Authors: Öztemir Yunus , Çalışkan Mustafa
Published: June 2023

In this study, we first investigate the intersection of two different ruled surfaces in R^3 for two different tangential spherical indicatrix curves on DS^2 using the E. Study mapping. The conditions for the intersection of these ruled surfaces in R^3 are expressed by theorems with bivariate functions. Secondly, considering two different principal normal spherical indicatrix curves on DS^2, we examine the intersection of two different ruled surfaces in R^3 by using E. Study mapping. Similarly, the conditions for the intersection of these ruled surfaces in R^3 are indicated by theorems with bivariate functions. Thirdly, using E. Study mapping, we explore the intersection of two different ruled surfaces in R^3 by considering two different binormal spherical indicatrix curves on DS^2. Likewise, the conditions for the intersection of these ruled surfaces in R^3 are denoted by theorems with bivariate functions. Fourthly, considering two different pole spherical indicatrix curves on DS^2, we study the intersection of two different ruled surfaces in R^3 by using E. Study mapping. In the same way, the conditions for the intersection of these ruled surfaces in R^3 are specified by theorems with bivariate functions. Finally, we provide some examples that support the main results.
Influence of The Substrate-Target Angle and Sputter Temperature On The Properties of CIGS Thin Films Sputtered From Single Quaternary Target
Authors: Keleş Filiz , Güçlüer Furkan
Published: June 2023

In this study, Copper Indium Gallium Selenide (CIGS) thin films were successfully sputtered from a single quaternary target onto soda lime glass substrates. The effect of the incident angle of target atoms and sputter temperature on the properties of the films were examined using various techniques. It was found that a higher incident angle of target atoms resulted in a columnar microstructure, while a lower angle produced a solid film. The columnar structure showed improved optical absorption compared to the solid film. The sputter temperature had a greater effect on the crystalline properties of the films, with all films except those sputtered at room temperature showing polycrystalline formation. The films displayed a chalcopyrite structure and acceptable band gaps in the range of 1.1-1.3 eV, regardless of the incident angle and sputter temperature. These results indicate that the optical properties of CIGS thin films can be improved by a small increase in the incident angle of target atoms, without adversely affecting the structural and crystalline properties.
The Energy Spectra of Electric Induced Mathieu Quantum Dot with Hydrogenic Impurity Implanted in Quantum Plasma
Authors: Bahar Mustafa Kemal
Published: June 2023

In this study, the energy spectra of the electric induced Mathieu quantum dot (MQD), containing the central hydrogenic impurity, fabricated by heterostructure InxGaAs1-x/GaAs, implanted in quantum plasma is considered. The effects of the external electric field, structural parameters and plasma screening on the energy levels of the MQD with the hydrogenic impurity are probed. The more general exponential cosine screened Coulomb (MGECSC) potential is used to depict the quantum plasma interactions. In order to solve the related Schrödinger equation, the numerical asymptotic iteration method (AIM) is employed. Achievable values of the effective potential parameters are taken into consideration, and for special purposes, the alternative to each other of these parameters is also evaluated.
Design, Characterization and in vitro Simulations of nano-HAP/GO Composite Drug Delivery System Produced by Hydrothermal Methods Loaded with Paclitaxel
Authors: Çiftçi Fatih
Published: June 2023

In this study, it was aimed to develop a nano drug system that can be used in passive targeting in pancreatic cancer treatment. Hydroxyapatite nanocrystals (n-HAP) produced by hydrothermal process and graphene oxide (GO) produced by hummers method were used to increase the carrier capacity of the nano drug system and to activate the drug release kinetics and drug loading capacity. Analyses performed for nanocomposite drug carrier systems; FT-IR, XRD, TGA, BET analysis, Zeta potential, TEM and SEM. Paclitaxel (PTX), a chemotherapeutic drug used in the treatment of pancreatic cancer, was loaded into HAP nanocrystals (PTX- loaded n-HAP) and its activity on pancreatic cancer cells was investigated. When PTX was 1 and 2 mg, Encapsulation Efficiency (EE) and Drug Loading Content (LC) were 79.17-72.24% and 80.01-80.27%, respectively, for H-n-HAP crystal structure only, while EE and LC were 88.57-81.57% and 90.84-110.57%, respectively, when H-n-HAP crystal structure was loaded with 1 and 2 mg PTX together with GO. Here, it was observed PTX release profiles are according to the Hixson model. According to Fick's law, release profile was observed with values of k=1.89, n=0.21, SSD=0.04, R2=0.997, FIC=2.03, SD=0.004. In cell culture studies, as GO nanomaterials were loaded into H-n-HAP nanocrystal structure, the effect of PTX drug on pancreatic cancer increased and the viability of cancer cells decreased. It can be concluded that H-n-HAP/GO/PTX nanocomposite structure kills more pancreatic cancer cells with synergistic effect.
Options for the development of colorectal cancer immunotherapy
Authors: Mustafin Rustam N.
Published: June 2023

In colorectal cancer immunotherapy, the use of antibodies against the PD-1/PD-L1 checkpoints showed low efficacy and the development of a number of side effects with damage to the liver, lung, and thyroid gland. For this reason, to stimulate the antitumor immune response, it is necessary to search for other targets, which can be used as retroelements. Epigenetic activation of their expression with inhibitors of histone methyltransferases and deoxyribonucleic acids (DNA) leads to the formation of double-stranded ribonucleic acids (RNA) that stimulate the antiviral response of interferon, which causes apoptosis of tumor cells. This method of viral mimicry shows an objective response in colorectal cancer and other malignant neoplasms. However, activation of retrotransposons is an inducer of carcinogenesis and a necessary condition for clonal evolution and the development of chemoresistance. Therefore, the most rational combination of the method of viral mimicry is with selective inhibition of retroelements involved in the pathogenesis of colorectal cancer. For this purpose, specific miRNAs, that recruit DNA methyltransferases to the loci of the location of retroelements due to the complementarity of nucleotide sequences, which is due to their evolutionary relationship, can be used. An analysis of the scientific literature revealed 28miRNAs derived from transposons and associated with colorectal cancer, some of which exhibit oncosuppressive activity, while others exhibit oncogenic activity. These miRNAs can be used as guides for epigenetic effects on retroelements involved in colorectal cancer carcinogenesis.
The Acceptance of COVID-19 Vaccine: The Projection from the First Year of COVID-19 Pandemic in Indonesia
Authors: Sadarang Rimawati Aulia Insani , Karini Tri Addya , Kurniati Yessy
Published: June 2023

The Pandemic of COVID-19 affected not only the health sector but also other sectors. Herd immunity through vaccination was recommended by experts. This study purposed to describe the acceptance of the COVID-19 vaccine and to discover predictive factors of COVID-19 vaccine acceptance in Indonesia. This is a cross-sectional study. Data collection used an online platform conducted in August 2020. The questionnaire based on Survey Tool and Guidance by WHO Regional Office for Europe. Logistic regression was run to identify associated factors and to build a predictive model of vaccine acceptance. There were 164 respondents aged 19 – 56 years. About 70.1 percent of respondents showed a willingness to accept the vaccine for COVID-19. The predictive model consisted of age, perceived probability that has been infected and trust in government press releases with performance reaching 73 percent.  The trust of people in the government was the most important key to engaging people in vaccination. Evidence-based messaging delivered regularly by the government and consistent action between the government and health officers would educate and lead people's risk perceived and the decision to be vaccinated.
Discrepancy Evaluation of 10 Antenatal Care Services (10T) at the Dinoyo Health Center, Malang City
Authors: Orin Yosefina Salestina , Wardani Hartati Eko , Ekawati Rany , Hapsari Anindya
Published: June 2023

One of the goals of the Antenatal Care (ANC) program is to identify abnormalities or complications early that may occur during pregnancy. The quality of antenatal care contributes to better outcomes for pregnant women. Meanwhile, at the Dinoyo Health Center, the coverage of antenatal care visits showed a decreased trend. Furthermore, the quality of ten antenatal care services (10T) was still unknown. This study aimed to evaluate the implementation of ten antenatal care services (10T) at the Dinoyo Health Center. This descriptive qualitative study was conducted at the Dinoyo Health Center on April 2022. Data were obtained from ten informants that were purposively selected and also from secondary data. Data analysis was carried out using the Discrepancy Evaluation Model (DEM) approach. The data triangulation process was also done. This study found that one of ten antenatal care services (10T) did not meet the standard. It was a counseling session.
Activo vs. Pasivo: La arquitectura de los cuatro modos
Authors: Santacana Juncosa Amadeu , Mensa Biosca Pol
Published: June 2023

Este artículo tiene como objetivo establecer una nueva catalogación de arquitecturas a partir de su forma de gestionar el clima con el fin de resituar la gestión climática del espacio y el papel de su habitante como material fundamental del proyecto arquitectónico. En un recorrido que sigue las investigaciones sobre las cualidades térmicas en los edificios de Lisa Heschong, pasando por los planteamientos sobre la pérdida de relación con el clima de Eva Horn, para finalmente complementar los modos de gestión climática propuestos por Reyner Banham. Se desarrollan ejemplos de los cuatro modos en su estado puro: Retardante, Hermético, Selectivo y Regenerativo; separándolos conceptualmente para incorporarlos como material arquitectónico de una manera necesariamente combinada. Y así volver a establecer una relación activa entre las experiencias habitables y la riqueza de las variaciones climáticas.
Directrices improvisadas para la construcción urbana teniendo en cuenta a Darwin o como la naturaleza viene a la ciudad, una conversación con Menno Schilthuizen
Authors: Gallego Picard Pablo
Published: June 2023

Entrevista a Menno Schilthuizen, autor del libro Darwin viene a la ciudad.
Estrategias de aprendizaje y rendimiento académico en el alumnado universitario
Authors: Díaz-García Alexandra , Garcés-Delgado Yaritza , Feliciano-García Luis
Published: June 2023

El rendimiento académico está influido por múltiples variables, entre ellas, las estrategias de aprendizaje. Estas estrategias de aprendizaje son mecanismos conscientes e intencionales utilizados para procesar, codificar y recuperar información con la intención de aplicarla y transferirla a la consecución de un objetivo de aprendizaje. La finalidad de esta investigación era analizar la incidencia que el uso de las estrategias de aprendizaje tiene en el rendimiento académico del alumnado universitario. Siguiendo un enfoque de investigación de corte cuantitativo no experimental basado en la encuesta, se trabajó con una muestra compuesta por 639 estudiantes de primer curso de los grados de la Facultad de Educación de la Universidad de La Laguna y de la Facultad de Ciencias de la Educación de la Universidad de Las Palmas de Gran Canaria. La encuesta se realizó utilizando una versión adaptada del Cuestionario para la Evaluación de las Estrategias de Aprendizaje de los Estudiantes Universitarios (CEVEAPEU). El rendimiento académico se evaluó a partir de la nota media de los estudiantes al final del primer cuatrimestre.. Los resultados revelaron diferencias significativas en el rendimiento académico en función de la utilización por parte del alumnado de estrategias de aprendizaje cognitivas, metacognitivas y de gestión de recursos. Las conclusiones apuntan a posibles formas de educar y orientar a los estudiantes en relación con las habilidades y estrategias de aprendizaje como factor determinante para reducir las tasas de abandono y aumentar el rendimiento académico.