bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Binary Mixture of Sesame And Castor Oil as an Ecofriendly Corrosion Inhibitor of Mild Steel In Crude Oil
Authors: Oguntade Tomiwa I. , Ita Christiana S. , Sanmi Olabode , Oyekunle Daniel T. 
Published: April 2020

Background:
A binary mixture of sesame and castor oil was used for reducing the corrosion rate of mild steel in crude oil environments. This study investigated the corrosion behavior of a binary mixture of sesame and castor oil as a corrosion inhibitor for mild steel in crude oil. Different parameters such as immersion time, the concentration of inhibitor and pH were investigated for corrosion of mild steel.

Methods:
Experimental analysis indicates that a passive layer of the inhibitor formed over the surface of mild steel thereby reducing the corrosion rate. This was demonstrated by varying different process parameters such as the concentration of binary inhibitor, pH and time using two different statistical models; the Response Surface Methodology (RSM) and the Artificial Neural Network (ANN).

Results:
From the results, it was observed that ANN was a better predictive tool to determine the corrosion rate of mild steel than the RSM.

Conclusion:
Overall, both the models prove that relative to the process parameters used, the importance level of the parameters was Time < Concentration of binary inhibitor < pH.
Patients’ Preferences for Dentist’s Nationality and Gender among Residents of Jeddah, Saudi Arabia
Authors: Alzahrani Shrooq , Aboalshamat Khalid , Bedaiwi Samaher , Alnefaie Sarah , Almutairi Taghreed , Asiri Saja , Alnuwaymi Ibtihal 
Published: April 2020

Introduction:Several studies have shown that a dentist’s gender and nationality are important factors for patients when they choose their dentist. This topic is important in countries like Saudi Arabia, which is considered to be conservative and has many cultural boundaries that separate men from women in daily activities.Aim:This study aimed to investigate patient preference for a dentist’s gender among a sample population in Jeddah, Saudi Arabia.Methods:This cross-sectional study recruited 1,000 participants who completed a self-administered questionnaire. Data were analyzed using SPSS v.21.Results:A total of 46.2% of the participants had no particular gender preference for dentists in general, while 28.6% prefered male dentists and 25.2% prefered female dentists. Male and female participants had statistically significant differences in the selection of a dentist’s gender in general, with all participants tending to choose a dentist of the same gender as themselves. Previous personal experience and recommendations from friends were among the most influential factors in choosing dentists of a specific gender. In terms of preferences for dentists of a particular nationality, 45.6% had no preferences, while 28.4% preferred Saudi dentists.Conclusion:Although half of the Jeddah residents participating in our study had no preference for dentists of a particular gender or nationality, the other half had specific preferences.
Pattern and Reasons for Permanent Tooth Extractions at Dental Clinics of the University of Science and Technology of Fujairah, UAE
Authors: Alsaegh Mohammed Amjed , Albadrani Abdullah Wadullah 
Published: April 2020

Objectives:
To evaluate the pattern and reasons for permanent tooth extractions in an adult patient seeking free dental care at clinics of the University of Science and Technology of Fujairah, UAE.

Methods:
The current retrospective study involved patients who had a dental extraction in the student dental clinics of the University of Science and Technology of Fujairah. Data of 1000 randomly selected extractions were collected from the archive of the university dental clinics.

Results:
Males had more teeth extracted (88.3%) than females. The most frequent extraction (58.9%) was in individuals of 30-49 years old range. Dental caries was the major reason (44.6%) of extractions, followed by wisdom teeth related extraction (23.4%), periodontal disease (18.1), failure of endodontically treated teeth (8.7%), prosthetic reasons (2.6), orthodontic reasons (1.7%), and trauma (0.9%) respectively. The most extracted teeth were the maxillary posterior teeth (45.6%), followed by mandibular posterior teeth (38.2%); then, maxillary anterior teeth (8.8) and lastly, were the mandibular anterior teeth (7.4%). Caries was significantly more frequent in female gender (χ2= 250.126; p=.000), while the periodontal disease was more common in male gender (χ2 = 146.790; p=.000).

Conclusion:
Caries is the principal reason for tooth extractions, followed by wisdom teeth related problems and periodontal disease. There is an increasing percentage of tooth extraction due to periodontal disease with both aging and male gender. Caries was the more frequent reason for extraction in all quadrants, except the lower anterior teeth in which periodontal disease was the more frequent reason. Lastly, anterior teeth were retained in the oral cavity more than posterior teeth.
Physiological Animal Imaging with 68Ga-Citrate
Authors: Uğur Ayşe , Gültekin Aziz 
Published: April 2020

Background:
Gallium-68 is an ideal research and hospital-based PET radioisotope. The
uptake mechanism of Gallium citrate is a combination of specific and non-specific processes, for
example, vasodilatation, increased vascular permeability, plasma transferrin binding and lactoferrin
and siderophores.

Objective:
In this study, by applying the 68Ge/68Ga generator product, a simple technique for the
synthesis and quality control of 68Ga-citrate was introduced and was followed by preliminary animal
studies.

Methods:
The synthesis of 68Ga-citrate was performed with a cationic method using the Scintomics
automated synthesis system (Scintomics GmbH GRP module 4V). Since the standard procedure
for quality control (QC) was not available, the definition of chemical and radiochemical purity of
68Ga-citrate was carried out according to the ICH Q2(R1) guideline. The standard QC tests were
analysed with Scintomics 8100 radio-HPLC system equipped with a radioactivity detector. In this
study, a New Zealand rabbit weighing 2520 g was used for PET/CT images.

Results:
Gallium-68 is an ideal research and hospital-based PET radioisotope. The
uptake mechanism of Gallium citrate is a combination of specific and non-specific processes, for
example, vasodilatation, increased vascular permeability, plasma 68Ga-citrate synthesis was performed by a cationic method without using organic solvents.
The labelling efficiency was found to be >98%. The HPLC method used to assess the radiochemical
purity of 68Ga -citrate was validated as rapid, accurate and reproducible enough to apply it to patients
safely. The physiological distribution of 68Ga-citrate was investigated in a healthy rabbit. The
blood pool, liver, spleen, kidneys and growth plates were the most common sites of 68Ga-citrate involvement. transferrin binding and lactoferrin
and siderophores.
Chromatographic Assessment of Polyphenolic Profile and Total Phenolic Content and Antioxidant Activity of Common Leafy Vegetables in Bangladesh
Authors: Alam Mohammad Khairul , Tuli Rumana , Khan Mohammad Sharif , Abdullah Abu Tareq Mohammad , Khatun Maksuda , Akhtaruzzaman Mohammad , Islam Sheikh Nazrul 
Published: April 2020

Background:
Polyphenolic compounds are known to provide health benefits and protect
against degenerative chronic diseases. Utilization and identification of foods with a high
content of these compounds are gaining greater attention nowadays.

Objective:
The present study reports the total phenolic content (TPC), polyphenolic composition
and antioxidant activity (DPPH, FRAP and TEAC) of 10 commonly consumed leafy vegetables
growing in Bangladesh.

Materials and Methods:
The samples were collected from different locations of Bangladesh and
mixed together to ensure sample representativeness. Folin-Ciocalteu method was used for the
analysis of TPC, and quantification of polyphenolic components was done by high-performance
liquid chromatography (HPLC- DAD). Additionally, antioxidant activities of the selected vegetables
were also analysed by utilizing DPPH, FRAP & TEAC.

Results and Discussion:
TPC ranged from 23.64 ± 1.20 to 45.59 ± 3.04 mg gallic acid equivalent
(GAE)/g freeze-dried sample (fds). The polyphenolic spectrum ranged from 0.30 ± 0.02 to
647.42 ± 147.12 mg/100 g fds; quantity and spectrum of which varied in the vegetables. Among
the studied vegetables, Centella asiatica contained the highest amount of TPC (45.59 ± 3.04 mg
GAE/g fds) and also exhibited high antioxidant capacities, as documented by DPPH, FRAP and
TEAC assays. Moreover, Principal component analysis (PCA) of investigated variables clearly
separated Centella asiatica from other samples.

Conclusion:
Phenolic compounds being strong antioxidants reduce the risk of chronic diseases
and the finding of this study would aware the people to take vegetables rich in phenolics. It
would also fill up the data gap in the existing food composition table of Bangladesh.
Profil kemampuan berpikir kreatif matematis ditinjau dari gaya kognitif reflective dan impulsive
Authors: Miatun Asih , Nurafni Nurafni 
Published: April 2020

Penelitian ini bertujuan untuk mendeskripsikan profil kemampuan berpikir kreatif matematis mahasiswa calon guru dalam menyelesaikan masalah open-ended ditinjau dari gaya kognitif reflective dan impulsive. Penelitian ini adalah penelitian deskriptif kualitatif. Subjek penelitian ini adalah mahasiswa calon guru pada Program Studi Pendidikan matematika, Universitas Muhammadiyah Prof. DR. HAMKA yang diambil menggunakan teknik purposive sampling. Validasi data menggunakan teknik triangulasi waktu. Data dianalisis menggunakan metode perbandingan tetap (constant comparative method) dengan langkah (1) reduksi data dan kategorisasi, (2) penyajian data; dan (3) penarikan kesimpulan dan verifikasi. Hasil penelitian menunjukkan bahwa dari empat indikator kemampuan berpikir kreatif matematis, mahasiswa dengan gaya kognitif reflective mampu memenuhi aspek kelancaran dan keterincian, yaitu menjawab soal dengan lebih lancar, mampu menjelaskan hubungan sebab akibat antar konsep yang digunakan, serta lebih rinci dan runtut dalam menjawab dan menjelaskan jawaban tertulisnya, dibandingkan dengan mahasiswa dengan gaya kognitif impulsive. Indikator aspek keluwesan dan kebaruan masih belum bisa terpenuhi karena mahasiswa dengan gaya kognitif reflective dan impulsive baru mampu menjawab pertanyaan menggunakan satu cara saja dan belum menggunakan strategi baru. Profile of mathematical creative thinking ability viewed from reflective and impulsive cognitive style AbstractThe study aimed to describe mathematical creative thinking ability profiles of prospective students in solving open-ended problems in terms of reflective and impulsive cognitive styles. The research classified as a qualitative descriptive study. The subjects of this study were prospective students of the Mathematics Education Department, Universitas Muhammadiyah Prof. DR. HAMKA and selected using a purposive sampling technique. For data validation, we used time triangulation techniques. Data were analyzed using the constant comparison method with steps (1) data reduction and categorization; (2) data presentation; and (3) conclusions and verification. The results showed that from the four indicators of mathematical creative thinking, students with reflective cognitive style were able to fulfill fluency and detail aspects in answering questions, explain causal relationships between concepts used, and more detail in written answers, compared to students with impulsive cognitive style. The indicators of flexibility and originality aspects of both students with the reflective and impulsive cognitive style are still cannot be fulfilled because they only answer questions using one method without using a new strategy.
What the high school students say about mathematics homework
Authors: Pastoriko Fransiskus Magnis , Hidayati Kana , Rasmuin Rasmuin 
Published: April 2020

Homework had become a tradition in teaching and learning mathematics in school. Even so, in Indonesia, there is not enough research on homework. Our research is conducted to investigate high school students’ views on homework and to provide the basis for further research on homework in Indonesia. In this research, we use exploratory-descriptive qualitative to explore and describe the students’ view of homework. We collected the data from 124 high school students by using the structured interview conducted via online form. The data were analyzed by using the thematic analysis. Based on our results, we found that (1) students know that mathematics homework can help them with their academic achievement and their attitudes toward their studies, (2) mathematics homework is not high on their priority, (3) it makes them tired physically and mentally, and (4) students argue that mathematics problems are better to be solved in the class where they can ask the teacher. We also found their difficulties in doing their homework, such as (1) lack of knowledge (2) their teachers do not give them the necessary ‘tools’ to solve the problems, (3) they can’t ask for helping hands if they can’t solve the problems (4) some emotional problems such as motivation, and (5) other priorities are higher on their list.
Scheduled Telephone Support for Internet Cognitive Behavioral Therapy for Depression in Patients at Risk for Dropout: Pragmatic Randomized Controlled Trial
Authors: Pihlaja Satu , Lahti Jari , Lipsanen Jari Olavi , Ritola Ville , Gummerus Eero-Matti , Stenberg Jan-Henry , Joffe Grigori 
Published: April 2020

Background
Therapist-supported, internet-delivered cognitive behavioral therapy (iCBT) is efficient in the treatment of depression. However, the optimal mode and intensity of therapist support remain to be identified. Scheduled telephone support (STS) may improve adherence and outcomes but, as it is time- and resource-consuming, should be reserved for patients for whom the usual support may be insufficient.

Objective
This paper aims to reveal whether add-on STS for patients at risk of dropping out improves treatment adherence and symptoms in iCBT for depression.

Methods
Among patients participating in an ongoing large observational routine clinical practice study of iCBT for depression delivered nationwide by Helsinki University Hospital (HUS-iCBT), those demonstrating a ≥14-day delay in initiation of treatment received invitations to this subsidiary STS study. A total of 100 consenting patients were randomly allocated to either HUS-iCBT as usual (control group, n=50) or HUS-iCBT plus add-on STS (intervention group, n=50). Proportions of those reaching midtreatment and treatment end point served as the primary outcome; secondary outcomes were change in Beck Depression Inventory (BDI)–measured depressive symptoms and time spent in treatment.

Results
Add-on STS raised the proportion of patients reaching midtreatment compared with HUS-iCBT as usual (29/50, 58% vs 18/50, 36%; P=.045) and treatment end point (12/50, 24% vs 3/50, 6%; P=.02). Change in BDI score also favored add-on STS (3.63 points vs 1.1 points; P=.049), whereas duration of treatment did not differ.

Conclusions
Add-on STS enhances adherence and symptom improvement of patients at risk of dropping out of iCBT for depression in routine clinical practice.

Trial Registration
International Standard Randomised Controlled Trial Number (ISRCTN) 55123131; http://www.isrctn.com/ISRCTN55123131.
Conversations and Medical News Frames on Twitter: Infodemiological Study on COVID-19 in South Korea
Authors: Park Han Woo , Park Sejung , Chong Miyoung 
Published: April 2020

Background
SARS-CoV-2 (severe acute respiratory coronavirus 2) was spreading rapidly in South Korea at the end of February 2020 following its initial outbreak in China, making Korea the new center of global attention. The role of social media amid the current coronavirus disease (COVID-19) pandemic has often been criticized, but little systematic research has been conducted on this issue. Social media functions as a convenient source of information in pandemic situations.

Objective
Few infodemiology studies have applied network analysis in conjunction with content analysis. This study investigates information transmission networks and news-sharing behaviors regarding COVID-19 on Twitter in Korea. The real time aggregation of social media data can serve as a starting point for designing strategic messages for health campaigns and establishing an effective communication system during this outbreak.

Methods
Korean COVID-19-related Twitter data were collected on February 29, 2020. Our final sample comprised of 43,832 users and 78,233 relationships on Twitter. We generated four networks in terms of key issues regarding COVID-19 in Korea. This study comparatively investigates how COVID-19-related issues have circulated on Twitter through network analysis. Next, we classified top news channels shared via tweets. Lastly, we conducted a content analysis of news frames used in the top-shared sources.

Results
The network analysis suggests that the spread of information was faster in the Coronavirus network than in the other networks (Corona19, Shincheon, and Daegu). People who used the word “Coronavirus” communicated more frequently with each other. The spread of information was faster, and the diameter value was lower than for those who used other terms. Many of the news items highlighted the positive roles being played by individuals and groups, directing readers’ attention to the crisis. Ethical issues such as deviant behavior among the population and an entertainment frame highlighting celebrity donations also emerged often. There was a significant difference in the use of nonportal (n=14) and portal news (n=26) sites between the four network types. The news frames used in the top sources were similar across the networks (P=.89, 95% CI 0.004-0.006). Tweets containing medically framed news articles (mean 7.571, SD 1.988) were found to be more popular than tweets that included news articles adopting nonmedical frames (mean 5.060, SD 2.904; N=40, P=.03, 95% CI 0.169-4.852).

Conclusions
Most of the popular news on Twitter had nonmedical frames. Nevertheless, the spillover effect of the news articles that delivered medical information about COVID-19 was greater than that of news with nonmedical frames. Social media network analytics cannot replace the work of public health officials; however, monitoring public conversations and media news that propagates rapidly can assist public health professionals in their complex and fast-paced decision-making processes.
Pengetahuan dan Perilaku Konsumsi Remaja Putri yang Berhubungan dengan Status Anemia
Authors: Simanungkalit Sintha Fransiske , Simarmata Oster Suriani 
Published: April 2020

Anemia is a condition where the number of red blood cells or the concentration of oxygen transport in the blood (Hb) is insufficient for the physiology needs of the body.1 The prevalence of anemia (15-24 years old) in Indonesia (2018) was 32%.2 The aimed of this study was to determine the relationship between knowledge, tablet knowledge of iron supplementation, nutritional status, Fe intake and consumption patterns of inhibitor and enhancers factors with anemia in adolescent girls. This study found that 63.4% of girls had anemia. The factors associated with anemia in this study were knowledge (p value = 0.004), nutritional status (p value = 0.034) and consumption patterns of Fe inhibitors (p value = 0.009). Based on multivariate test, knowledge of anaemia was obtained as the dominant factor in anemia among adolescent girls with OR 3,3. Suggestions in this study were the need to be counseling about anemia and Fe inhibitor consumption patterns and monitoring nutritional status at UKS SMA/K so that adolescent girls can avoid anemia.
Keywords: anemia, knowledge, nutritional status and inhibitor Fe.
Abstrak
Anemia merupakan suatu kondisi dimana jumlah sel darah merah atau konsentrasi pengangkut oksigen dalam darah (Hb) tidak mencukupi untuk kebutuhan fisiologi tubuh.1 Prevalensi anemia pada rentang usia 15-24 tahun berdasarkan Riskesdas tahun 2018 adalah 32%.2 Tujuan penelitian ini adalah mengetahui hubungan pengetahuan dan perilaku konsumsi dengan anemia remaja putri. Penelitian ini didapatkan sebanyak 63,4% remaja putri mengalami anemia. Faktor-faktor yang berhubungan dengan anemia remaja putri dalam penelitian ini adalah pengetahuan (p value = 0,004), status gizi (p value = 0,034) dan pola konsumsi inhibitor Fe (p value = 0,009). Setelah dilakukan uji multivariat didapatkan pengetahuan anemia sebagai faktor dominan anemia remaja putri dengan OR 3,3. Saran dalam penelitian ini adalah perlunya diberikan penyuluhan mengenai anemia dan pola konsumsi inhibitor Fe serta pemantauan status gizi di UKS SMA/K sehingga para remaja putri terhindar dari anemia.
Kata kunci: Anemia, Pengetahuan, Status Gizi, Inhibitor Fe
Principales reguladores hormonales y sus interacciones en el crecimiento vegetal
Authors: Alcantara Cortes Johan Steven , Acero Godoy Jovanna , Alcántara Cortés Jonathan David , Sánchez Mora Ruth Melida 
Published: April 2020

Una hormona vegetal o fitohormona es un compuesto producido internamente por una planta, que ejerce su función en muy bajas concentraciones y cuyo principal efecto se produce a nivel celular, cambiando los patrones de crecimiento de los vegetales y permitiendo su control. Los reguladores vegetales son compuestos sintetizados químicamente u obtenidos de otros organismos y son, en general, mucho más potentes que los análogos naturales. Es necesario tener en cuenta aspectos críticos como oportunidad de aplicación, dosis, sensibilidad de la variedad, condición de la planta, etc., ya que cada planta requerirá de unas condiciones específicas de crecimiento que pueden afectarse por la concentración de ellos en el medio. Los reguladores vegetales son productos sintéticos que se han convertido en las primeras herramientas capaces de controlar el crecimiento y actividad bioquímica de las plantas por lo que su uso ha aumentado en los últimos años.
Esta revisión busca hacer una recopilación bibliográfica de los primeros acontecimientos de la aplicación de los reguladores de crecimiento vegetal. Se presentan las principales características fisiológicas que pueden desarrollar la aplicación de estos sobre el crecimiento vegetal a nivel celular y su repercusión a nivel fenotípico; además, se describen las principales fitohormonas más conocidas en la aplicación biotecnológica. Entre ellas se encuentran auxinas, giberelinas, citoquininas, ácido abscísico, ácido salicílico, poliaminas, jasmonatos y derivados, brasinoesteroides, etileno y estrigolactonas. Se detallan las principales funciones a nivel del metabolismo vegetal y sus posibles interacciones intra e intercelular.