bluuebunny/crossref_metadata_2025_split huggingface dataset:
Microwave-assisted Green Synthetic Approach towards Water Dispersible Luminescent PVP-coated Tb3+ and Ce3+/Tb3+-doped KZnF3 Nanocrystals
Authors: Sarkar Shyam 
Published: March 2024

Background:
Perovskite fluoride nanomaterials are an interesting research topic in material science due to their exciting properties like high-temperature superconductivity, magnetic behaviour, piezoelectric behaviour, etc. Doping of lanthanide ions into the perovskite fluoride nanomaterials makes them more promising as they have applications from biological label-ling to multicolor optical devices.

Objective:
This study aimed to carry out the synthesis of perovskite KZnF3 nanocrystals in an eco-friendly environment with the help of a microwave-assisted route in a shorter reaction time and at low temperatures. Moreover, it aimed to make the nanocrystals water dispersible, illuminating brighter photoluminescence, which was achieved by coating nanocrystals surface with poly(N-vi-nyl-2-pyrrolidone) and doping of different lanthanide ions (Ln= Tb3+ and Ce3+/Tb3+) respectively, into the KZnF3 nanocrystals matrix.

Methods:
The synthesis of nanocrystals was performed in an environment-friendly microwave-assisted way and under green conditions. For example, in the preparation of Tb3+(5mol%)-doped KZnF3 nanocrystals, 0.95 mmol of Zn(NO3)2 and 0.05 mmol of Tb(NO3)3 were dissolved in 8 mL of distilled water. Then, an 8 mL aqueous solution of KF (3 mmol) was added to it. The entire mixture was stirred well for 15 minutes. About 60 mg of PVP was added to the mixture and stirred for another 15 minutes. Then, a microwave reaction vessel was made by transferring the final reaction mixture into it and kept under microwave irradiation at 90°C temperature for 15 minutes. Finally, the product was cooled to room temperature and collected by centrifugation.

Results:
Both Tb3+(5mol%)-doped and Ce3+(15mol%)/Tb3+(5mol%) co-doped KZnF3 nanocrystals exhibit very strong green photoluminescence. The structural and optical properties of as-obtained nanocrystals were characterized by PXRD, field emission scanning electron microscopy, Fourier infrared spectroscopy, transmission electron microscopy, thermogravimetric analysis, and photoluminescence spectra.

Conclusion:
The nanocrystals with uniform cubical morphology having ~60 nm sizes were successfully synthesized. The high photoluminescence efficiency, together with the water dispersibility of the nanocrystals, makes the material useful in many fields of optical devices and offers several biological applications. Moreover, this method could be used to make other lanthanide-doped perovskite fluoride nanocrystals.
STRUKTUR KOMUNITAS PLANKTON PADA MUSIM PENGHUJAN EMBUNG TIRTOAGUNG SLEMAN YOGYAKARTA
Authors: Aspiana Endah , Sudarsono Sudarsono 
Published: March 2024

Penelitian ini bertujuan untuk mengetahui struktur komunitas plankton Embung Tirtoagung, kualitas fisika kimia perairan dan status ekosistem Embung Tirtoagung, Sleman, Yogyakarta. Pengambilan sampel dilakukan di 5 stasiun dengan 2 ulangan dalam rentang waktu satu minggu. Air sampel yang telah tersaring kemudian dimasukkan dalam botol flakon dan dilakukan pengamatan di Laboratorium Biologi FMIPA UNY. Struktur komunitas plankton yang terdapat di Embung Tirtoagung terdiri dari 20 jenis plankton yang terdiri dari 12 jenis fitoplankton dan 8 jenis zoo plankton. Nilai keanekaragaman yang masuk dalam kategori sedang diikuti dengan dominasi rendah menunjukkan bahwa tidak ada spesies yang mendominasi. Kualitas air berdasarkan hasil uji fisikokimia masih memenuhi persyaratan baku mutu air kelas III. Berdasarkan analisis dan perhitungan struktur komunitas plankton, dapat diketahui bahwa status ekosistem Embung Tirtoagung termasuk dalam kategori perairan mesotrofik hingga eutrofik dengan tingkat temuan yang lebih tinggi dari filum Chlorophyta dibandingkan dengan kelompok fitoplankton lainnya. Kondisi perairan mesotrofik hingga eutrofik dipengaruhi oleh tingginya kadar nitrat dan fosfat.Kata kunci: Embung Tirtoagung, plankton, struktur komunitasThis study aims to determine the structure of the Tirtoagung Embung plankton community, the physical and chemical quality of the waters and the ecosystem status of the Tirtoagung Embung, Sleman, Yogyakarta. Sampling was carried out at 5 stations with 2 replications within one week. The filtered water sample was then put in a flakon bottle and observed at the Biology Laboratory of the Faculty of Mathematics and Natural Sciences, UNY. The plankton community structure in Embung Tirtoagung consists of 20 types of plankton consisting of 12 types of phytoplankton and 8 types of zooplankton. Diversity values that fall into the medium category followed by low dominance indicate that no species dominates. Water quality based on the results of physicochemical tests still meets the requirements of class III water quality standards. Based on the analysis and calculation of the plankton community structure, it can be seen that the ecosystem status of Tirtoagung Embung is included in the category of mesotrophic to eutrophic waters with a higher level of findings from the phylum Chlorophyta compared to other phytoplankton groups. Mesotrophic to eutrophic water conditions are influenced by high levels of nitrate and phosphate. Keywords: Embung Tirtoagung, plankton, community structure
Detection of Urinary Misfolded Proteins for Imminent Prediction of Preeclampsia in Pregnant Women With Suspected Cases: Protocol for a Prospective Noninterventional Study
Authors: Tang Haiyang , Tian Yijia , Fang Jing , Yuan Xiaoying , Yao Minli , Wang Yujia , Feng Yan , Shu Jia , Ni Yan , Yu Ying , Wang Yuanhe , Liang Ping , Li Xingmin , Bai Xiaoxia 
Published: March 2024

Background
Preeclampsia (PE) is one of the most common hypertensive diseases, affecting 2%-8% of all pregnancies. The high maternal and fetal mortality rates of PE are due to a lack of early identification of affected pregnant women that would have led to closer monitoring and care. Recent data suggest that misfolded proteins might be a promising biomarker for PE prediction, which can be detected in urine samples of pregnant women according to their congophilia (aggregated) characteristic.

Objective
The main purpose of this trial is to evaluate the value of the urine congophilia-based detection of misfolded proteins for the imminent prediction of PE in women presenting with suspected PE. The secondary objectives are to demonstrate that the presence of urine misfolded proteins correlates with PE-related maternal or neonatal adverse outcomes, and to establish an accurate PE prediction model by combining misfolded proteins with multiple indicators.

Methods
At least 300 pregnant women with clinical suspicion of PE will be enrolled in this prospective cohort study. Participants should meet the following inclusion criteria in addition to a suspicion of PE: ≥18 years old, gestational week between 20+0 and 33+6, and single pregnancy. Consecutive urine samples will be collected, blinded, and tested for misfolded proteins and other PE-related biomarkers at enrollment and at 4 follow-up visits. Clinical assessments of PE status and related complications for all participants will be performed at regular intervals using strict diagnostic criteria. Investigators and participants will remain blinded to the results. Follow-up will be performed until 42 days postpartum. Data from medical records, including maternal and fetal outcomes, will be collected. The performance of urine misfolded proteins alone and combined with other biomarkers or clinical variables for the prediction of PE will be statistically analyzed.

Results
Enrollment started in July 2023 and was still open upon manuscript submission. As of March 2024, a total of 251 eligible women have been enrolled in the study and enrollment is expected to continue until August 2024. Results analysis is scheduled to start after all participants reach the follow-up endpoint and complete clinical data are collected.

Conclusions
Upon completion of the study, we expect to derive an accurate PE prediction model, which will allow for proactive management of pregnant women with clinical suspicion of PE and possibly reduce the associated adverse pregnancy outcomes. The additional prognostic value of misfolded proteins is also expected to be confirmed.

Trial Registration
Chinese Clinical Trials Registry ChiCTR2300074878; https://www.chictr.org.cn/showproj.html?proj=202096

International Registered Report Identifier (IRRID)
PRR1-10.2196/54026
Association between cholesterol and blood pressure examination in Sampangan, Semarang City: a preliminary study
Authors: Christyana To Lidwina Prillya Indra , Riwanto Ignatius , Sebong Perigrinus H , Sutanto Eviana Budiartanti , Ernestia Henrita , Tjitradinata Cynthia , Kristanti Alberta Widya 
Published: March 2024

Purpose: This study aims to determine the baseline prevalence and association between blood pressure and cholesterol examination.
Method: This preliminary study used a cross-sectional design to analyze the secondary blood pressure and cholesterol levels data in the Sampangan sub-district, Semarang City. The total sampling technique covered those enrolled in the metabolic syndrome screening from January to April 2023. The logistic regression test was used in data analysis.
Results: 58 respondents took blood pressure checks, while only 40 had cholesterol checks. The probability of males getting changes in cholesterol levels was higher than that of females (OR = 8.69; p-value = 0.01). However, neither (female nor male) had a significant relationship, and there was no difference in the chances of changes in blood pressure (OR = 1.43; p = 0.72). Respondents above 60 years had a significant association with changes in blood pressure compared to those under 60 years (OR = 0.09; p = 0.007).
Conclusion: This study revealed males of a certain age experience higher changes in cholesterol levels compared to females. People over 60 years old tend to have higher blood pressure compared to those under 60 years old. These findings propose an outreach strategy for health screening for patients with limited mobility, transportation access, and finances for routine checkups at public or government healthcare facilities.
Cold chain evaluation of the immunization program in Primary Health Centers in 2022
Authors: Isworo Adi , Kiswoyo Pramono Giri , Suharsono  
Published: March 2024

Purpose: The major challenges of vaccination programs are associated with the vaccine cold chain management in primary health centers that must be evaluated. This paper discusses how vaccine cold chain management can address the challenges of vaccination programs in primary health centers. Specifically, it examines how the vaccine chain is managed.
Methods: The design of this observational study was cross-sectional. Evaluations assessed in this study include input aspects, output aspects, process aspects, and outcome aspects of vaccine chain management. Observation methods and direct interviews with the evaluated vaccine chain staff collected primary data.
Results: Management of the vaccine chain has been carried out properly with the support of human resources or immunization personnel who are in accordance with their competence, based on research results, the management staff are diploma graduates in nursing and midwifery. The defrosting process is carried out for a certain period, as well as using vaccine carriers and ice flasks, which are still good for vaccine distribution. It is very important to pay attention to the supply of the number and type of vaccines for the next month's needs at the public health center.
Conclusion: The three key factors that guide the vaccine cold chain are educated vaccine control staff, vaccine storage, and delivery equipment, and efficient vaccine control procedures.
Customer Satisfaction with Community Pharmacy Services and Its Determinant in Indonesia: A Cross-sectional Survey
Authors: Yuliani Rizka Prita , Muin Fathul , Farrukh Muhammad Junaid , Pribadi Prasojo 
Published: March 2024

Background: Assessing customer satisfaction and its determinants are important for evaluating the quality of pharmaceutical services and identifying areas for improvement.Objectives: This study aims to evaluate the level of customer satisfaction and identify key factors associated with it.Methods: A cross-sectional study was conducted in 10 pharmacies located in Yogyakarta, Surakarta, and Magelang cities, involving a total of 1,200 customers. Data was collected using a validated patient satisfaction questionnaire from previous study and analyzed using SPSS 20 software. It was interviewed questionnaire that consists of three domains: sociodemographic characteristics, patient satisfaction, and opinions on service improvement in the community pharmacies. The inclusion criteria were customer who received services at community pharmacies between July and August 2021. Customers who were sick and unable to participate in an interview were eliminated from the study. Results: The average overall satisfaction score obtained was 3.46 (SD ±0.34). The average customer satisfaction scores were as follows: facilities (3.92 ± 0.45), waiting time (3.76 ± 0.59), medicine stocks (3.54 ± 0.61), staff availability (3.25 ± 0.53), and counseling hours (3.18 ± 0.54).Conclusion: Overall, customers are quite satisfied with the community pharmacy services. There is a relationship between age, residence, education level, type of medicine, payment method, and experience in using pharmacy with customer satisfaction level. Community pharmacists should prioritize improving service quality by focusing on enhancing customer counseling and pharmacists’ skills in communication.
Impacto del anuncio comercial desde la actitud y contenido de los YouTubers
Authors: Larios-Gómez Emigdio , Fischer Laura 
Published: March 2024

<p>Se trata de un estudio de tipo descriptivo, no experimental y transversal que pretende determinar si la actitud hacia el YouTubers y su contenido influyen en el impacto del anuncio comercial en su audiencia. Se encuestaron a hombres y mujeres de 18 a 24 años de México, Brasil, Colombia y Ecuador. El tratamiento de los datos por ecuaciones estructurales y prueba de hipótesis fue a través de SPSS v25, Amos v24, SmartPLS 3 y EQS 6.3. Se puede inferir que existe una relación directa entre la actitud del YouTuber y el uso de productos en su contenido generando empatía de sus seguidores. Que coadyuva a la intención de compra por las actitudes aspiracionales de los YouTubers: estilo de vida que quiere o desea. Adquiriendo marcas o productos que el YouTuber consume mencionando o no los atributos de estos.</p>
Omnicanalidad: la consistencia en la integración de canales de una marca minorista
Authors: Barón López Ena Yuritze 
Published: March 2024

<p>El aumento de marcas digitales ha forzado a las marcas minoristas tradicionales a introducir el canal digital en la compra de bienes y servicios. Las marcas minoristas tradicionales, pasaron de tener únicamente puntos físicos a tener canales digitales y aplicaciones convirtiéndose en negocios multicanal, y más recientemente omnicanal. En América Latina, la adopción del canal digital se ha intensificado debido al aumento de la cultura digital durante la pandemia de Covid 19, no obstante, en el inicio de la pandemia, los consumidores aún estan explorando los canales digitales como una opción para la compra de productos de primera necesidad. Este artículo presenta resultados exploratorios sobre el uso de los canales de las marcas minoristas en Colombia, específicamente presentan los resultados sobre la percepción de la consistencia entre ellos y su relación con marcas minoristas de productos de gran consumo, siendo esta una de las condiciones esenciales de la integración. Los datos fueron recogidos durante los meses de abril y mayo del 2020 y hacen parte de un estudio que busca comprender el comportamiento de compra omnicanal de consumidores en economías emergentes. A través del planteamiento de un modelo tipo SEM (Structural Equation Model) revisado con el software PLS se analiza la relación entre los conceptos consistencia y valor de marca. Los resultados confirman la relación del valor de marca y la consistencia entre los canales.</p>
Kemampuan Pemecahan Masalah Geometri Siswa berdasarkan Self-Regulated Learning
Authors: Syarifah Rif'atul , Permadi Hendro , Qohar Abdul , Anwar Lathiful 
Published: March 2024

Geometri merupakan salah satu pokok bahasan dalam matematika yang dapat mengukur kemampuan pemecahan masalah, karena geometri membahas tentang benda-benda, definisi, simbol dan gambar yang dapat digunakan sebagai ide atau gagasan oleh siswa.Â Penelitian ini adalah penelitian kualitatif deskriptif yang bertujuan untuk mendeskripsikan dan menganalisis kemampuan siswa dalam pemecahan masalah berdasarkan langkah-langkah Polya ditinjau dari Self-Regulated Learning (SRL). Subjek dari penelitian ini adalah satu siswa di setiap tingkat SRL (tinggi, sedang, rendah). Metode pengumpulan data yaitu berupa angket, tes dan wawancara. Hasil penelitian menunjukkan bahwa 12.5% siswa memiliki tingkat SRL tinggi, 70.83% siswa memiliki tingkat SRL menengah dan 16.67% siswa memiliki tingkat SRL rendah. Siswa dengan SRL tinggi dapat melakukan pemecahan masalah sesuai langkah-langkah Polya dengan lengkap. Siswa dengan SRL sedang dapat menerapkan langkah memahami masalah (menulis informasi dan apa tujuan masalah) dan langkah perencanaan. Sementara itu, siswa dengan SRL rendah dapat memahami masalah pada soal. Berdasarkan wawancara siswa hanya bisa memberikan informasi dari yang terdapat pada soal namun tidak memiliki ide untuk menyelesaikannya. Siswa dengan SRL rendah hanya mampu melakukan tahapan pertama dari empat tahapan pemecahan masalah. Sehingga hasil penelitian ini dapat disimpulkan bahwa semakin tinggi SRL atau tingkat kemandirian belajar seseorang, maka akan semakin tinggi pula kemampuan pemecahan masalahnya.
Kinematic characteristics and water mass transports of submesoscale coherent vortices in the northeastern South China Sea
Authors: Wei Yi , Zhang Zhiwei , Zhang Xincheng , Zhao Wei , Sun Zhongbin , Tian Jiwei 
Published: March 2024

As a unique phenomenon occurring in the subsurface ocean, submesoscale
coherent vortices (SCVs) are believed to have a pivotal role in the
long-distance ocean tracer transports. SCVs have been widely observed in
the global oceans, however, most of them are captured accidentally and
their kinematic characteristics and water mass transports have only been
studied in a limited number of regions. Here, we use 4-year observations
of velocity, temperature, and salinity from five moorings in the
northeastern South China Sea (NESCS) to examine dozens of newly
discovered SCVs. A total of 34 SCVs were identified during the
observational period, including 25 convex lens-like anticyclones and 9
concave lens-like cyclones. The maximum swirl velocity, mean radius, and
vertical length scale of the anticyclones (cyclones) are 0.19±0.07 m
s (0.19±0.07 m s), 26.4±13.9
km (17.0±5.4 km), and 204±62 m (188±53 m), respectively. Vertically, the
velocity structure of the observed SCVs conforms to a Gaussian function
when the effect of stratification is removed. Water mass analyses
suggest that 88% (30/34) of the SCVs carried Kuroshio water, which
demonstrates the mechanism proposed by Zhang et al. (2022) that they are
formed by Kuroshio-islands interactions within the Luzon Strait. This
category of SCVs is therefore named Luzon Strait island wake eddies
(Liddies). We further estimate that Liddies can result in an equivalent
annual-mean volume transport of 0.20 Sv westward across the Luzon
Strait, which suggests that they play a nonnegligible role in the
subsurface water transports between the NESCS and the northwestern
Pacific.
PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE GROUP INVESTIGATION TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS PESERTA DIDIK KELAS XI
Authors: . Febriyani 
Published: March 2024

Mathematical Problem-solving is one of the abilities that needs to be developed in learning mathematics. However, that ability is still low in class XI SMAN 7 Padang is still low. One solution to overcome the problem is used a cooperative learning model of Group Investigation (GI). This research type were descriptive and quasi-experiment with a research design of Nonequivalent Posttest-Only Control Group Design. The sample are Class XI F6 as the experiment class and Class XI F7 as the control class. Based on result of data analysis acquired P-value = 0.000 where P-value < 0.05. It can be concluded that mathematical problem-solving skills on students who learn with a cooperative learning model of GI is better than direct learning. Keywords – Cooperative Learning, Direct Learning, Group investigation, Mathematical Problem Solving
PENGARUH PENERAPAN MODEL KOOPERATIF TIPE THINK PAIR SQUARE TERHADAP KEMAMPUAN PEMAHAMAN KONSEP MATEMATIS PESERTA DIDIK
Authors: Putri Zakia Rahima 
Published: March 2024

Concept understanding is a very important ability in the mathematics learning process that is expected to be mastered well by learners. The real life in the field found that the understanding of the concept of mathematics among the class VIII students of SMP Negeri 5 Mandau for the 2022–2023 academic year was still low. One effort that can be made to improve students' concepts understanding of mathematical is to apply models such as Think-Pair-Square learning. The purpose of this research is to describe whether the understanding of the mathematical concepts of students who learn using the Think Pair Square learning model is better than the understanding of the mathematical concepts of students who learn by using the direct learning model in class VIII SMP Negeri 5 Mandau. This research type is quasi-experimental with a randomized, control-group-only design. This study's population consisted of students in class VIII at SMP Negeri 5 Mandau. Class VIII.4 was selected as the class for experimental and class VIII.2 as the class for control. The instrument used is an understanding test of mathematical concepts in consist of description questions. Keywords —Cooperative Learning, Mathematical Concept Comprehension, Think Pair Square, Direct Learning.