bluuebunny/crossref_metadata_2025 huggingface dataset:
The Influence of Modeling Liquid on Microhardness of Single-Shade Composite Resins: An In-Vitro Study
Authors: Arslandaş Dinçtürk Beyza , Aksoy Yüksek Merve , Kedici Alp Cemile
Published: August 2024

Abstract

Aim:

To assess the effect of modeling liquid on the microhardness of single-shade universal composites.

Materials and Methods:

A total of 60 disk-shaped samples were prepared in six groups [Omnichroma (OM), Essentia Universal (EU), Vittra APS Unique (VA), OM + Signum, EU + Signum, and VA + Signum] for surface microhardness measurements. Samples were stored in a coffee solution for 7 days and after that bleached with an Office bleaching agent (Total Blanc Office). Surface microhardness was measured for baseline, after staining, and after bleaching. A two-way analysis of variance test was used for statistical analysis (P < 0.05).

Results:

In terms of microhardness, there is a statistically significant difference (P < 0.05) between the two categories with and without modeling liquid. The alterations in microhardness measurements at baseline, after staining, and after bleaching are statistically significant (P < 0.05). The Essentia groups showed the lowest microhardness findings at all measurement times. Microhardness values decreased significantly more when EU was applied along with modeling liquid than when it was not applied at different intervals.

Conclusions:

Modeling liquid affects the microhardness of single-shade composites. Microhardness is reduced when modeling liquid is used for all three single-shade universal composite resins at three different times.
Root Resorption and Alveolar Bone Changes in the Maxillary Canine Retraction Using NiTi Closed-Coil Springs Versus Elastomeric Chains: A Split-Mouth Trial
Authors: Le Lam Nguyen , Ma Hanh Ngoc , Do Thao Thi , Le Khanh Vu Phuong
Published: August 2024

Abstract

Aim:

To compare apical root resorption and alveolar bone changes induced by the maxillary canine closure procedure performed on patients with Angle Class I malocclusion using NiTi closed-coil springs versus elastomeric chains.

Materials and Methods:

Thirty-one adult patients who had been instructed to undergo bilateral maxillary first premolar extraction completed a randomized clinical trial split-mouth study with a double-blind design. Elastomeric chains will be used on the left side, and NiTi closed-coil springs will be used on the right side for patients with even numbers. Elastomeric chains will be used on the right side of patients with an odd number, whereas NiTi closed-coil springs will be used on the left side of patients. For each patient, cone-beam computed tomography of the maxillary canine and lateral cephalometric radiographs were carried out before and after treatment to evaluate apical root resorption and perform cephalometric measurements.

Result:

The tooth root length decreased by 0.90 ± 0.60 mm in the NiTi closed-coil spring group. The alveolar bone level increased by 0.53 ± 0.66 mm on the buccal side and by 0.79 ± 0.72 mm on the lingual side. These changes were statistically significant (P < 0.001). In the elastomeric chain group, the tooth root length was decreased by 0.92 ± 0.69 mm, and the levels of vertical buccal and lingual alveolar bone increased significantly (P < 0.001). Compared to NiTi closed-coil springs and elastomeric chain groups, there was a 0.03 ± 0.878 mm difference in the tooth root length; however, this difference was not statistically significant (P = 0.878).

Conclusion:

Elastomeric chains and NiTi closed-coil springs both generated tooth root resorption, but the results were comparable and the difference was not statistically significant. There was no statistically significant difference between the elastomeric chain and NiTi closed-coil spring groups regarding the changes in alveolar bone loss around the maxillary canines.
Depression Levels in Relation to Oral Hygiene, Gingival Health Status, and Salivary Constituents in a Group of Dental Students: A Cross-Sectional Study
Authors: Qasim Alhan Ahmed
Published: August 2024

Abstract

Aim:

In this study, the effects of depression on oral hygiene, gingival health conditions, and some salivary components (total protein, magnesium, and calcium) were explored.

Materials and Methods:

A total of 207 dental students aged 20–21 years (third grade) in a College of Dentistry, University of Baghdad, Baghdad, Iraq, were examined. They were distributed into four groups (normal, mild depression, moderate depression, and severe and very severe depression) according to the Patient Health Questionnaire for Depression Scoring. Oral examinations include oral hygiene (dental plaque and calculus) and gingival health status; samples were collected from 90 participants to serve as a sub-sample of the total sample and classified as follows: normal (22), mild depression (24), moderate depression (22), and moderately severe and severe depression (22) groups. Then, saliva samples were analyzed to determine the total protein, magnesium, and calcium. Statistical Package for Social Sciences version 21 was used to analyze the data.

Results:

The mean value of oral hygiene and gingival indices increased significantly with increasing severity of depression. For salivary calcium and magnesium, their values decreased with increasing severity of depression, whereas total protein values increased. Salivary calcium and magnesium were negatively correlated with oral hygiene and the gingival indices, and the highest correlations of total proteins with plaque index, calculus index, and gingival index were positive.

Conclusions:

Depressive feelings were observed in dental students. In reality, depression has a close link with oral hygiene and gingival health status, and normal constituents of saliva could be affected.
Multimodality Imaging for Rare Presentation of Placenta Increta in the First Trimester in a Patient with Previous Cesarean Section and Asherman Syndrome
Authors: Vadvala Harshna V. , Henning Jonathan E. , Aina-Mumuney Abimbola
Published: August 2024

We report multi-modality imaging (Ultrasound and Magnetic Resonance Imaging) findings of a rare complication in a multi-gravida patient with history of Asherman syndrome presenting with placenta increta in a cesarean scar ectopic pregnancy. The appropriate diagnosis was established with imaging and patient was managed surgically with total abdominal hysterectomy and bilateral salpingectomy. Asherman syndrome and its management of hysteroscopic adhesiolysis are associated with increased odds of placenta accreta spectrum and postpartum hemorrhage. Patients with Asherman syndrome are considered high risk in pregnancy and should be closely monitored for placental site abnormalities during current and subsequent pregnancies.
Comparison between Handheld Echocardiography and Cardiac Magnetic Resonance for Stroke Volume and Left Ventricular Ejection Fraction Quantification
Authors: de Raat Frederique Maria , Bouwmeester Sjoerd , Bouwman R. Arthur , Houthuizen Patrick
Published: August 2024

Background:

Reliable quantification of stroke volume (SV) and left ventricular ejection fraction (LVEF) is essential for point-of-care assessment in hemodynamically compromised patients. Handheld echocardiography (HHE) equipment has entered the market a few years ago and is now available for clinical use. However, the performance of HHE for SV and LVEF quantification in comparison to cardiac magnetic resonance (CMR) imaging as golden standard is yet unknown.

Methods:

Twenty volunteers were scanned with HHE, standard echocardiography (SE), and CMR. LVEF and SV were measured with each modality, and their accuracy and precision were evaluated.

Results:

Bias and limits of agreement (LOA) between HHE and CMR were −0.21% (−2.89: 2.48) and 11.24% (−15.79: 15.59) for LVEF and 29.85 ml (22.13: 37.57) and 32.34 ml (−15.01: 44.86) for SV, respectively. Bias and LOA between SE and CMR were −0.60% (−3.74:2.55) and 13.16% (−18.85:18.26) for LVEF and 32.08 ml (24.61:39.54) and 31.34 ml (−11.29:43.37) for SV, respectively.

Conclusion:

HHE versus CMR showed comparable accuracy and precision compared to SE versus CMR.
Comparative evaluation of optic nerve sheath diameter in patients undergoing laparoscopic cholecystectomy using low and standard pressures of gas insufflations
Authors: Saini Vikas , Samra Tanvir , Sethi Sameer , Naik B Naveen
Published: August 2024

Background and Aims:

Intra-abdominal insufflation of CO2 is associated with an increase of intracranial pressure (ICP). We conducted this randomized control trial to compare the impact of low vs standard pressure pneumoperitoneum on ICP through the ultrasonographic estimation of the optic nerve sheath diameter (ONSD).

Material and Methods:

Patients of age group 18–80 years planned for laparoscopic cholecystectomy were randomly allocated into two groups; group S (standard pressure of 12–16 mmHg) and group L (low pressure of 8–10 mmHg) on the basis of intra-abdominal pressures used for the surgery. All were administered general anesthesia and end-tidal carbon dioxide (ETCO2) was maintained between 35 and 40 mmHg and peak airway pressures less than 35 cmH2O. ONSD was measured in either eye at a point 3 mm posterior to the globe at following time intervals; baseline, 5 min after induction, 10 min after insufflation, 10 min after reverse Trendelenburg, intraoperatively during surgery and after exsufflation in the supine position.

Results:

The demographic profile and operative times were comparable. ONSD was measured in 100 patients in each group for both the eyes and no patient had values above the cutoff value of 5.0 mm. No significant difference in the ONSD was observed at the above mentioned time intervals between the groups. There was a statistically significant lower value of the heart rate and mean arterial pressure in the low-pressure group.

Conclusion:

Intra-abdominal insufflation of CO2 at standard and low pressures does not increase ICP in short duration surgeries and thus both the pressures can be safely used in adult patients operated in reverse Trendelenburg position. Advantages of low pressure were limited to better hemodynamic control.
Esophagogastric cancer after sleeve gastrectomy and roux-en-Y gastric bypass, its prevalence and risk factors: A meta-analysis
Authors: Al-Kadi Azzam , Alsuwaydani Saleh
Published: August 2024

Purpose:

In light of the increasing prevalence of esophagogastric cancer (EGC), the altered anatomy after bariatric surgery (BS) (mainly laparoscopic sleeve gastrectomy [LSG] and roux-en-Y gastric bypass [RYGB]) presents difficulties in treating these cancers. The article focuses on the risk factors associated with the development of EGC post-LSG and RYGB.

Methods:

Relevant articles were identified from databases such as SCOPUS, PubMed, and Web of Science (from 2010 to May 2022). From the selected and screened articles, a meta-analysis was performed using different statistical methods by calculating odds ratios, the t-test, and the discrepancies (95% confidence interval), to estimate the incidence of GC. Publication bias was estimated based on Cochrane risk tool and Newcastle–Ottawa Quality Assessment Scale.

Results:

The study included case reports (26), random control trials (RCT) (2), case series (6), and prospective (2) and retrospective studies (5). The current article also includes one each of epidemiological and medical administrative database studies. The 43 selected articles comprised 807,458 patients with BS, where 57.5% underwent LSG and 42.5% underwent RYGB. The average age and body mass index (BMI) were 48.11 and 43.53 ± 8.97 in the case of LSG, respectively. The average age was 52.77 and BMI was 42.62 ± 9.21 for RYGB. The obtained results suggested that cancer development is at higher risk in LSG among patients with comorbidities, absence of Helicobacter pylori, and delayed diagnosis, irrespective of their smoking habit. The incidence of the tumor or cancer and its severity is higher after LSG with 41.17% in comparison to RYGB 9.52%. A significant variation was observed in the period of cancer diagnosis. A minimum of 2 and 4 months and a maximum of 96 and 252 months variation have been observed for LSG and RYGB, respectively. No publication bias was noticed based on the selected articles. Furthermore, no direct correlation was identified or measured between the development of ECG and LSG/REYGB surgeries from the collected literature. EGC therapy following BS is complex and requires a personalized strategy that carefully balances optimal treatment with anatomical limitations.

Conclusions:

The risk factors like obesity, comorbidities, smoking, H. pylori infection, tumor stage, and diagnostic tests must be evaluated before BS. Although the current evidence-based practice does not advocate for a routine preoperative endoscopy, we highly advise for a preoperative endoscopic procedures before BS in the presence of the highlighted EGC risk factors.
Can honey treat methicillin-resistant Staphylococcus aureus?
Authors: Hamdi Jamal Talaat
Published: August 2024

Background:

Staphylococcus aureusand methicillin-resistantS. aureus(MRSA) are harmful bacteria in clinical settings and intensive care particularly. Honey was shown to be effective against a range of different bacteria and in low concentrations.

Aim of Study:

The aim of the study was to test locally available cheap honey on standardS. aureusand locally grown MRSA in the laboratory.

Methods:

Three samples of German honey were tested on agar plates in concentrations from 100% to 10% on standardS. aureussubsp.S. aureusATCC 25923. Then, they were tested on 20 specimens of locally grown MRSA specimens.

Results:

The minimum inhibitory concentration (MIC) zones of honey on standardS. aureusranged from 27.4 mm to 24.5 mm without dilution, and from 3.7 mm to 1.9 mm in 20% concentration. The mean MIC zones of honey on MRSA specimens in full concentration ranged from 27.1 mm to 25.2 mm.

Conclusion:

The three German samples of honey were found to have good and effective antibacterial activities on the standardS. aureusand MRSA organisms. It is recommended that the use of locally available cheap German honey as an antiseptic on wounds will not only reduce the cost of antiseptics in the hospital but also ensures the speedy rate of wound healing and reduce the risk of hospital cross-infection with MRSA.
Federal Philippines? Benchmark metrics drawn from three Federalist models
Authors: Donguiz Renebeth Gatudan
Published: August 2024

This research is an input to the proposed “Federal Philippines,” specifically addressing the gap on what model of federalism is suitable for the country. Recognizing that consultation from the grassroots is an important aspect of policymaking, a validated survey questionnaire that has passed a statistical reliability test was personally administered to 400 qualified respondents within a multicultural community. The result revealed which among the American, German, and Nigerian models is most favored. However, considerable differences arose within each model, with certain indicators being accepted and least accepted. Thus, a matrix of the most favored and less favored indicators is presented for strategic considerations.
Osmanlı Devleti'nde Modern Spor Süreci
Authors: Maral Merve Burcu
Published: August 2024

Osmanlı Devleti Tanzimat ile beraber siyasî, askerî, ekonomik, kültürel alanda değişmeler yaşamıştır. Bunların yanı sıra sporda da bazı gelişmeler görülmektedir. Tanzimat ile beraber geleneksel sporların yanında Batı’daki modern sporlar Osmanlı Devleti’ne okullar aracılığıyla girmeye başlamıştır. Avrupa’dan getirilen hocalar ve ders programlarına eklenen beden eğitimi, yani “riyazat-ı bedeniye” dersi modern sporun ilk adımlarıdır. Modern spor, geleneksel sporlardan farklı olarak askerî güce dayalı değil sağlıklı birey olmaya yöneliktir. Başlarda bir arada ilerleyen geleneksel ve modern spor zamanla modern sporun ön planda olduğu bir hal almıştır. Özellikle jimnastik, Osmanlı Devleti’nde modern sporun karşılığı olmuştur. Futbol, basketbol, voleybol, tenis, bisiklet, deniz sporları gibi günümüz modern sporların görülmesi daha sonra olmuştur. Günümüzde geleneksel sporlardan güreş, okçuluk, at biniciliği gibi sporlar varlığını sürdürmektedir. Modern sporun günümüzdeki halini alması uzun bir zamana yayılmıştır. Geleneksel sporların terk edilmesi ya da modern sporun halk tarafından benimsenmesi kolay olmamıştır. Bu çalışmada modern spordan önce var olan geleneksel spor ve modern sporun oluşum süreci hakkında bilgi verilmiştir. Daha sonra futbol, basketbol, tenis, kürek, golf, deniz sporları, boks, voleybol gibi modern sporlar hakkında bilgi verilmiştir.
On two-variable guarded fragment logic with expressive local Presburger constraints
Authors: Lu Chia-Hsuan , Tan Tony
Published: August 2024

We consider the extension of the two-variable guarded fragment logic with
local Presburger quantifiers. These are quantifiers that can express properties
such as "the number of incoming blue edges plus twice the number of outgoing
red edges is at most three times the number of incoming green edges" and
captures various description logics with counting, but without constant
symbols. We show that the satisfiability problem for this logic is
EXP-complete. While the lower bound already holds for the standard two-variable
guarded fragment logic, the upper bound is established by a novel, yet simple
deterministic graph-based algorithm.
Analysis of Work Discipline and Work Competence on Employee Performance at PT. Parkland World Indonesia
Authors: Hartoko Gatot , Noviyanti Eka Sintia , Saleh Muhamad , Fatari Fatari , Hidayat Ardi , Bahits Abdul
Published: August 2024

This study aims to determine how much influence the work discipline and work competence have on employee performance in the department development department of PT. Parkland World Indonesia Serang. This study uses a quantitative approach using a survey method with a saturated sample whose population is sampled as all 40 respondents. The analysis technique used is multiple linear regression analysis, correlations, T-test, F test, and coefficient of determination. The study work discipline variables and work competence have a significant partial effect on employee performance. Evidenced by the magnitude of the work discipline regression coefficient of 0.546 and work competence of 0.518 with a significant value of 0,000 (0,000 <0.05). Simultaneously a significant effect on employee performance, evidenced by Tcount>Ttable or 35,071> 3,250. Partially the comparison of t-count and t-table shows the work discipline variable Tcount>Ttable or 4,478> 2,026 and the work competency variable Tcount>Ttable or 4,848> 2,026. The coefficient of determination obtained by 65.5% of employee performance, the remaining 34.5% is influenced by other variables that are not meticulous such as motivation, leadership style, and others
Antecedent and Consequent Analysis of Career Development of Employees of PT. Mega Auto Central Finance (MACF) Serang Branch
Authors: Saefullah Encep
Published: August 2024

This study aims to examine the antecedents and consequent analysis of career development. This research is a hypothesis testing with survey method. The population in this study were all employees of PT. Mega Auto Central Finance (MACF) Serang Branch was used as samples, namely as many as 64 employees. The analytical tool used to test the suitability of the proposed model and hypotheses using the regression method, the conclusion is that all four hypotheses are supported. The results show that career planning affects career development, career management involves career, career development impacts job satisfaction, and career development affects career commitment. PT. MACF Serang Branch should increasingly provide career opportunities to improve career planning and management, improving career development so that it is expected to create work commitment and high job satisfaction
The Influence of Trust and Service Quality on Online Shop Interested in Buying
Authors: Muntaha Ulul
Published: August 2024

In this 4.0 generation, buying and selling online is very popular. Convenience, various choices and various promotions offered are the main factors behind this 4.0 generation purchasing online. This can also be seen from the change in buying styles from traditional markets to online stores, which are increasing. Although there are many advantages and disadvantages of buying and selling online, some consumers are not satisfied with their online purchases. This is due to the seller's lack of service and consumers' doubts about buying because the goods sent by the seller are often not following the order, thereby reducing the value of consumer confidence in buying and selling online. Based on this phenomenon, this study aims to determine the effect of trust and service quality on online shop buying interest with a case study of Islamic Business Economics Faculty students. The number of stamps used is 150 people
META ANALYSIS: THE EFFECTIVENESS AND INFLUENCE OF PROBLEM BASED LEARNING ON MATHEMATICS LEARNING
Authors: Yasin Muhamad , Pujiastuti Heni , Hendrayana Aan , Syamsuri Syamsuri
Published: August 2024

Problem based learning is a learning model that is currently widely used in all circles. such as teachers, lecturers and research students. For this reason, researchers chose problem-based learning as the topic of this meta research. There are several criteria for selecting articles, namely: Form of publication, location of research, time span of publication and available statistical information. Empirical data were obtained from published articles identified through computer literature searches using electronic databases such as ERIC https://eric.ed.gov/?journals), SAGE Publishing (https://us.sagepub.com/en-us/nam /journals), and Google Scholar (https://scholar.google.co.id/schhp?hl=id). In addition, manual searches were carried out through library sources. Of all the articles, there were 12 articles that met the predetermined criteria, then analysis was carried out using the website https://www.meta-mar.com/, to obtain a large combined effect size. The conclusion is that the use of the PBL model in mathematics learning is very strong and the use of the PBL model helps students in teaching to deepen PBL for learning purposes and PBL can also increase the effectiveness and influence of learning even better
PROBLEM-BASED LEARNING MODEL: IMPLEMENTATION IN MATHEMATICS LEARNING FLAT BUILT MATERIALS
Authors: Maningide Meivilia Inke , Mangobi James U. L. , Regar Vivian E.
Published: August 2024

The objective of this research is to ascertain the disparity in the mean learning outcomes between students instructed through the Problem Based Learning (PBL) approach and those instructed through the Direct Instruction (DI) approach. This study used a quasi-experimental approach, specifically the Posttest-Only Control Group design. The research was conducted at SMP Negeri 4 West Siau during the second semester of the 2023/2024 academic year. The participants of this study were selected from two homogeneous and identical classes: class VIIA, consisting of 14 students who received the Problem Based Learning (PBL) model treatment, and class VIIB, consisting of 14 students who received the Direct Instruction (DI) model treatment. The mean posttest score for the experimental group was 82.64, while the mean posttest score for the control group was 68.85. Conducting a data analysis using the t-test, the calculated t-value is 6.599, which is greater than the critical t-value of 2.056. Therefore, the choice is made to reject the null hypothesis (H0). Therefore, the Problem Based Learning (PBL) paradigm has the potential to enhance the overall academic performance of students in the subject of Bangun Datar
ANALISIS KESALAHAN NOLTING PADA SISWA DALAM MENGERJAKAN SOAL PERBANDINGAN TINGKAT SMP
Authors: Wibowo Raka Naval Setia , Haerudin Haerudin
Published: August 2024

Error is a mistake about something that was said to be correct in a previous agreement. Comparison is material that students still find difficult to understand in learning and many errors still occur. Even though the concept of comparative material is applied in everyday life, quite a lot of students have difficulty and do not understand comparative material. This research is descriptive research with a qualitative approach. Purposive sampling technique was used in this research to select samples with certain considerations. This research uses indicators of the types of Nolting errors, namely errors due to carelessness, errors in understanding concepts, errors in application, and errors in final results. The purpose of this research is to describe what errors experienced by students using the Nolting error type. Based on the results of the analysis carried out by researchers on careless mistakes, students were not careful enough to make mistakes that had an impact on the final results. In conceptual errors, students do not understand the formula so they cannot find a way to solve the problem. In application errors, students can know the formula but cannot apply it to the answer. Meanwhile, the final result is an error where the student is correct in the steps but does not answer what was asked in the question
PENERAPAN CRITICAL PATH METHOD (CPM) DALAM MENGANALISIS MANAJEMEN WAKTU PADA PERENCANAAN IKLAN GMS DIGITAL MARKETING
Authors: Cynthia Mayang Modelina , Cipta Hendra , Lubis Riri Syafitri
Published: August 2024

Planning helps monitor activities. to achieve the expected efficiency and effectiveness. In advertising planning at GMS Digital Marketing, there are often losses. The purpose of this study is to find out how to manage good time in advertising planning in GMS Digital Marketing and find out what efforts can be made so that advertising planning has efficient time. A mathematical approach called Critical Path Analysis (CPM) is used to organize the grouping of project operations. The project activities described using the CPM Method are a two-round procedure consisting of a forward and backward approach to setting a schedule when conducting a critical path analysis. ES and EF are set up during the forwarding process. During the transfer, LS and LF are determined. Early Start (ES) is the fastest way to start an activity. CPM is a cost-cutting approach for projects. We can know when costs and schedules need to be negotiated to meet project deadlines while keeping costs as low as possible. When a dimension is used, then CPM is used. (More accurate time estimates). Therefore, from the results of this study, a critical path is obtained that requires additional labor and time in completing the work
IMPLEMENTATION OF THE DECISION TREE METHOD PREDICTING STUDENT GRADUATION ON TIME WITH C5.0 ALGORITHM
Authors: Wulandari Hamidah , Husein Ismail
Published: August 2024

The percentage of students who graduate on time is one of the benchmarks for assessing a university's accreditation. To get good accreditation results, it is necessary to predict the graduation rate using a method so that students can anticipate delays in graduating. The C5.0 algorithm is a Decision Tree based algorithm which is a refinement of the ID3 and C4.5 algorithms created by Ross Quinlan in 1987. In this research, researchers analyzed several variables used in the input variables, there are several variables used, namely the SKS variable, Academic Leave, Student Status, Relationship/Communication with Family, Interests and Talents, Family Economics, Relationship/Communication with Lecturers, Number of Revisions, Final Assignment
Material or Method. Meanwhile, in the target variable there is the Study Period. The aim of this research is to obtain the results of the implementation of graduation predictions for Strata 1 (S1) Mathematics Study Program students, Faculty of Science and Technology, UIN North Sumatra Medan using the C5.0 Decision Tree Algorithm. There are several steps taken, namely data preprocessing, data division, calculating information gain for the entire case, calculating information gain and entropy for each attribute. Calculate the total entropy and Gain value of each attribute, create a branch from each root node category, if the result of the branch becomes an internal node, the process is carried out until the attribute categories cannot be split. After carrying out the analysis, the accuracy rate was 82.81%. With a high level of accuracy, it can be developed into a rule that can provide predictions or input in making decisions about whether students will graduate on time
SUATU APLIKASI DARI PENGGABUNGAN KONSEP STRAIT FUZZY SET DAN STRAIT SOFT SET
Authors: Putri Fadya Zahraini , Nazra Admi , Yanita Yanita
Published: August 2024

This article presents an illustration of the application of combining the concepts of Strait Fuzzy Set and Strait Soft Set involving "fuzzy" and "soft" data to solve a problem in the decision-making process. From this illustration, a condition is constructed in such a way that it is possible to form a bijective Soft Set from the results of combining the two concepts of Strait Fuzzy Set and Strait Soft Set. This research is descriptive qualitative research with a case study approach. An interesting result of this study is that for each parameter it is possible that there is only one group of objects that excel at certain parameters from all the existing parameters
PENGARUH BLENDED LEARNING TERHADAP KEMAMPUAN PEMECAHAN MASALAH SISWA SMK DIPONEGORO SALATIGA
Authors: Sari Rusnia Tri Prastika , Kriswandani Kriswandani
Published: August 2024

The blended learning model is a learning model that uses 2 methods, namely face-to-face and visual, so that it can provide a comprehensive learning experience to students. The purpose of this research is to determine the effect of the Blended Learning Model on students' problem solving abilities. This type of research uses quasi-experimental research with a one group pretest and posttest research design by comparing pretest and posttest scores. The population of this study used Class The results of this research show that the significance value of the Wilcoxon Signed Rank Test is 0.028 <0.05, which means there is a significant difference between the pretest and posttest mean values. In other words, there is an influence of the Blended Learning Model on the problem solving abilities of Class X Students at Diponegoro Vocational School
PENERAPAN TEKNIK ETL PADA KOMENTAR APLIKASI FLIP.ID DI APLIKASI PLAYSTORE DENGAN APLIKASI PENTAHO
Authors: Alif Rahmat Istighfaroni , Idhom Mohammad , JS Wahyu Syaifullah
Published: August 2024

User comments on the Play Store are crucial sources for developers to understand user feedback on their applications. In this research, we introduce the application of Extract, Transform, Load (ETL) Technique to analyze user comments on the Flip.id application on the Play Store using the Pentaho application. The ETL method is utilized to extract comment data, transform it into a suitable format, and load it into a data warehouse for further analysis. This process involves systematic and structured data processing steps. We identify common patterns in user comments to gain valuable insights for application developers in enhancing the quality and user experience of their applications. The research findings indicate that the application of ETL Technique using the Pentaho application can be an effective approach for analyzing user comments on the Play Store platform, as well as providing valuable insights for application developers for data-driven decision-making. This research can serve as a foundation for further research in sentiment analysis and user-driven product improvement
Assessment of liquefaction potential of sand distributed in the coastal area of Ninh Thuan based on SPT values
Authors: Nguyen Duong Thanh , Nguyen Son Tan , Pham Ha Ngoc Thi , Phung Hai Huu ,   Hanoi University of Mining and Geology, Hanoi, Vietnam
  Nam Mien Trung Co., Ltd, Ninh Thuan, Vietnam
Published: August 2024

The liquefaction potential of sandy soil has been widely investigated in the world for many years, especially after the Niigata and Alaska earthquakes in 1964. In which, the SPT values were mostly used for the evaluation of liquefaction potential. In Vietnam, the potential for soil liquefaction has been recently investigated. In the coastal area of Ninh Thuan province, the sand is widely distributed and often exposed on the surface. Additionally, many wind power farms have been built in this area. Thus, it is necessary to evaluate the liquefaction potential of sand distributed in this area. In this study, the potential for sand liquefaction in the coastal area of Ninh Thuan will be evaluated based on SPT values. Two common methods for evaluation of liquefaction potential proposed by Seed and Idriss; Idriss and Boulanger were employed. The research results show that at peak ground acceleration (amax) = 0.07 g and M = 5.5, the sand in the study area is non-liquefiable (safety factor against liquefaction, FS ( 1.48). However, at amax = 0.18 g and M = 7.5, the FS varies from 0.78 to 3.66 for the Seed and Idriss method and from 0.68 to 2.05 for the Idriss and Boulanger method. In general, the FS obtained from the Seed and Idriss method is higher than that obtained from Idriss and Boulanger method. Nevertheless, this insignificantly affects the overall assessment of liquefaction potential. At amax = 0.18 g and M = 7.5, the sand distributed in the study area can be liquefied at a depth of 17 m. However, it is not liquefied when the Nspt is higher than 28 ((N1) 60cs > 20).
Vibration of multilayer cantilever beams towards piezoelectric power harvesters
Authors: Doan Luan Cong , Doan Giap Van ,   Hanoi University of Mining and Geology, Hanoi, Vietnam
Published: August 2024

This paper investigates the vibration characteristics of a commonly employed mechanical structure, the cantilever beam, concerning its potential for direct electricity harvesting from piezoelectric crystals. Piezoelectric materials are renowned for their ability to generate electric charges when subjected to mechanical stress. To ensure continuous current generation, these materials require sustained excitation by external forces, typically achieved through vibration. However, piezoelectric crystals lack sufficient elasticity, necessitating attachment to a structurally conducive and easily vibratable framework. The cantilever beam, renowned for its simplicity and widespread use, serves as an ideal platform for this purpose. Layers of piezoelectric material (PZT5H) are affixed to brass-based cantilever beams to create various multilayer configurations. External forces are then applied at the free end of the beam to induce vibration. Given that the harvested power from PZT5H crystals correlates with the mechanical stress they experience, achieving optimal deformation is paramount. This is accomplished by leveraging the resonance effect of vibration, wherein the vibration modes and natural frequencies of the multilayer PZT5H beams must be thoroughly characterized. To this end, numerical methods and Finite Element Analysis via Abaqus software are employed. The vibrations of the brass base layer, as well as single-sided and double-sided PZT5H beams, are analyzed across four distinct mode shapes and corresponding natural frequencies. The study culminates in a comprehensive examination of the relationship between natural frequencies and dimensional parameters of the beams. Ultimately, this research offers valuable insights into the vibration behavior of cantilever beams, laying the groundwork for the development of efficient power harvesting devices utilizing mechanical vibration sources or tailored to specific applications.
Short overview about iron ore beneficiation: a case study in recovering the iron ore from the tailing pond of the Kip-Tuoc processing plant
Authors: Pham Hai Thanh , Nhu Dung Kim Thi , Pham Luan Van , Pham Nhung Thi , Tran Toi Trung , Vu Chinh Thi , Tran Thinh Duc ,   Hanoi University of Mining and Geology, Hanoi, Vietnam
  Vinacomin - Minerals Holding Corporation, Hanoi, Vietnam
Published: August 2024

Iron is a critical metal for many fields of life and industry. The iron-containing minerals are recovered from the iron run-of-mine (ROM) ore and the tailing pond (TP) of the previous processes. The minerals containing iron are hematite, magnetite, goethite, maghemite, etc. In addition, the invaluable minerals and gangue normally are quartz, kaolinite, gibbsite, pyrite, dolomite, chlorite, etc. Many methods to upgrade the iron content as well as separating the iron minerals and gangue are applied. Those technologies are magnetic separation, gravity separation, flotation, chemical separation, thermal beneficiation, or even the application of biotechnology. In Vietnam, there are many technological research projects on iron ore beneficiation and processing. The main technologies are washing and scrubbing methods, magnetizing roasting combined with a magnetic separator, spiral and magnetic separator, flotation, etc. The article shows a short review of the main methods in order to treat the type of raw material as well as some current applied technology in Vietnam. Based on the knowledge, a study to recover the iron of Kip-Tuoc tailing from the tailing pond is presented. The applied technology is the combination of a trommel screen, spiral and shaking table. The result showed that by applying the rational method and carefully controlling the operational parameters, the iron ore (from the tailing pond with 14.28% Fe) recovered up to 57.57% at the 59.49% Fe grade content. The iron content is suitable for feeding to the blast furnaces in Vietnam. Through the research results, a flowsheet for iron recovery at the tailing pond of the Kip Tuoc beneficiation plant is proposed and scaled up to industrial production's next step.
Difficult-to-treat axial spondyloarthritis patients
Authors: Saygın Öğüt Tahir , Erbasan Funda , Fatih Şahiner Mehmet , Nokay Mine , Yörük Öğüt Ayşe , Dilbil Melis , Ender Terzioğlu Mustafa , Yazısız Veli
Published: August 2024

Objectives: This study aimed to formulate D2T (difficult to treat) criteria for axial spondyloarthritis (AxSpA) patients and identify the prevalence of D2T patients and their characteristics.

Patients and methods: The cross-sectional study was conducted with 166 AxSpA patients (93 males, 73 females; mean age: 47.1±12.9 years; range, 19 to 78 years) between February 2023 and March 2023. The criteria were based on patients treated according to the European Alliance of Associations for Rheumatology (EULAR) recommendations for AxSpA. Entry criteria were treatment failure to ≥2 biological/targeted synthetic disease-modifying antirheumatic drugs with two different mechanisms of action or ≥3 biological/targeted synthetic disease-modifying antirheumatic drugs. Potential preliminary factors for D2T criteria were analyzed, and the characteristics of the subjects matching D2T criteria were compared with those of others.

Results: One hundred forty-two ankylosing spondylitis patients and 24 nonradiographic AxSpA patients were included in the study. The rate of fulfilling the D2T criteria was 22.9% (n=38) among AxsPA patients treated with biological agents. The potential D2T criteria were met by 23.2% of ankylosing spondylitis and 20.8% of nonradiographic AxSpA patients. Baseline characteristics, such as sex, age, diagnosis age, occupation, and education, of D2T patients were not statistically different from other patients. The prevalence of fibromyalgia was higher in D2T patients (p<0.001). Disease activity indices and acute phase response indicators were higher and quality of life was worse in D2T patients.

Conclusion: There was a considerable amount of AxSpA patients fulfilling the D2T criteria despite new and effective treatment agents.
WATER ABSORPTION AND SPECIFIC GRAVITY OF RECYCLED CONCRETE AGGREGATE FROM DEMOLISHING WASTE OF NAWABSHAH CITY
Authors: Kumar Ajay , Bangwar Rameez Ali , Khaskheli Ali Jan , Kumar Aroon , Magsi Muneer Ahmed
Published: August 2024

Concrete has been proved to be a leading construction material all over the world. Because of the demand for new structures, new construction is increasing day by day. This rapid demand of structures has increased the requirement of concrete. New structures are being constructed and old structures are being demolished. This results in the generation of construction waste on a large scale. The throwing away of this huge mass of construction waste has happened to a major social and environmental issue all around the world, mostly in developing countries. Therefore, a proper utilization of demolished waste is important in order to deal with this waste and have an alternate material for utilization in concrete.
Therefore, experimental research has been conducted to utilize this waste as recycled coarse aggregates to partially replace natural coarse aggregates. Old concrete was collected from 5 locations in Nawabshah. After collecting all the material we used 5 samples from each source, so we used 25 samples of recycled aggregates. 25 samples of recycled coarse aggregate are tested for water absorption and specific gravity to understand its properties and compare to the natural coarse aggregates. The water absorption of recycled coarse aggregate is greater than the water absorption of natural coarse aggregates. Among these five sites of Nawabshah city, New Naka area’s recycled coarse aggregates have greater water absorption which is 5.8%. The specific gravity of recycled coarse aggregate is lower than the specific gravity of natural coarse aggregates. Among these five sites of Nawabshah city, New Naka & Mehran Hotel area’s have lesser specific gravity which is 2.237. So, these aggregates can be used in new constructions, but it is proposed to be initially utilized in low load areas.
Passivating Effect of Wastewater on Iron Electrocoagulation Treatment Efficiency
Authors: Henry Paula , Aples Nilza , Buchanan Vernon
Published: August 2024

Iron electrocoagulation (Fe-EC) is a cost-effective water/wastewater treatment method that has demonstrated effectiveness in the remediation of many forms of polluted water. This technique utilizes a Fe sacrificial anode to produce coagulant in-situ, hence offering several advantages over conventional iron-based chemical coagulation procedures. However, the occurrence of solid precipitation on the electrodes during operation results in a passivating effect that has been reported to reduce treatment effectiveness and increase energy consumption. The objective of this investigation was to evaluate the passivation effect of oily wastewater (OW) and chicken slaughterhouse wastewater (CSW) on Fe anode, specifically in relation to the Faradaic efficiency (FE), using initial pH (4, 7, and 9) and applied current intensity (0.1, 0.2, and 0.4 A) as variables. The study also sought to assess the potential passivating impact of the wastewaters on the efficacy of Fe-EC in the removal of chemical oxygen demand (COD) from the wastewaters. The results revealed that the mean passivating effect was 13.4%, 7.67%, and 22.7% for OW and 22.3%, 17.13%, and 12.3% for CSW at 0.1 A, 0.2 A, and 0.4 A, respectively. FE ranged from 0.77 to 0.92 and 0.78 to 0.88 for OW and CSW, respectively. The initial pH of the wastewater was observed to significantly influence the FE at the given applied currents. While the mean COD removal from both wastewaters was greater than 83%, there was a lack of correlation between the FE and COD removal. This finding suggests that the mass of the coagulant is one of several potential COD removal factors. Further research includes electroanalytical studies of Fe corrosion in various wastewaters.
FAKTOR-FAKTOR YANG BERHUBUNGAN DENGAN KUNJUNGAN IBU HAMIL DALAM MELAKUKAN ANTENATAL CARE DI WILAYAH KERJA PUSKESMAS GLUMPANG BARO KABUPATEN PIDIE 2020
Authors: Idawati Idawati , Yuliana Yuliana , Razali Razali
Published: August 2024

Every year, around 1.5 million women experience pregnancy difficulties and more than half a million are accepted worldwide because of problems with pregnancy and childbirth. The purpose of this study was to study the Factors Associated with the Visit of Pregnant Women in Performing Antenatal Care. This study uses analytical research methods with Croossectional, with the technique of taking samples of 30 people. Univariate research results on obtaining respondents who visited antenatal care as many as 21 respondents (70.0%), respondents who have higher education are 19 respondents (63.3%), respondents who have sufficient income of 19 respondents (63.3%), respondents who received family support were 17 respondents (56.7%). The results of the bivariate study found that there was a significant relationship between education and antenatal care visits (P value = 0.008), there was a significant relationship between income and antenatal care visits (P Value = 0.001), there was a significant relationship between family support and antenatal care visits ( P value = 0.037). Conclusion there is a relationship of education with antenatal care visits, there is a relationship of income with antenatal care visits, there is a relationship of family support with antenatal care visits.
FORMULASI DAN EVALUASI FISIK SEDIAAN LIP BALM EKSTRAK ETANOL UMBI BIT (Beta vulgaris var. rubra (L) Moq.) SEBAGAI PEWARNA ALAMI
Authors: Isnaini Erlin Devi , Suhesti Iin , Dewi Aptika Oktaviana Trisna
Published: August 2024

Beetroot (Beta vulgaris var. rubra (L) Moq.) has the pigment betasianin which produces a red color and is often used as a natural coloring agent in food so that it can be developed to be used as a dye in cosmetic products. The purpose of this study was to determine the lip balm preparation formulation of beetroot extract (Beta vulgaris var. rubra (L) Moq.) as a natural dye and physical evaluation. In this study using a descriptive experimental method using variations in the concentration of beetroot extract. The variations in the concetration of beetroot extract were F1 0%, F2 1%, F3 5% and F4 10%. From each formula, a physical lip balm test was carried out including the organoleptic test, homogeneity test, pH test, melting point test, and preference test. The result showed that the lip balm preparation on F1 was yellow, F2 was peach, F3 was pink and F4 was maroon. F1, F2, F3 have the distinctive smell of oleum cacao, while F4 has the distinctive smell of lanolin. And semi solid preparation. Homogeneity test F1, F2, F3 and F4 have homogeneous preparations. pH test at F1 5.26;  F2 5.03;  F3 4.87 and F4 4.76. melting point test of all formulas melting at 50°C for F1 and F2 for 12 minutes, F3 10 minutes and F4 for 6 minutes. The preference test concluded that the panelists preferred F4.
PROFIL SWAMEDIKASI ANALGETIK PADA MAHASISWA POLITEKNIK INDONUSA SURAKARTA
Authors: Ma'rufah Siti , Khotimah Khusnul , Dewi Aptika Oktaviana Trisna , Setiyanto Riyan
Published: August 2024

Self-medication is a community effort to treat symptoms without a doctor's prescription. With self-medication, complaints can be resolved and resolved quickly and effectively. Medicines that are sold freely in kiosks make it easier for people to get drugs to carry out self-medicated actions. The purpose of this study was to determine the profile of using analgesic drugs by self-medication in students of Polytechnic Indonusa Surakarta. This research is a cross sectional approach. Data collection using a questionnaire via google form to 88 respondents. The sampling technique used is random sampling by taking sample members randomly. Quantitative data processing uses Microsoft Office Excel.The results showed that the characteristics of the respondents who participated in this study were mostly women aged 17-25 years from 5 study programs, namely D3 Pharmacy, D3 Mass Communication, D3 Hospitality, D3 Information Management and D3 Automotive Machinery. The most pain complaints experienced by respondents were headache, toothache and menstrual pain. Respondents tended to use 1 type of synthetic drug or traditional / herbal medicine with only 1 type of active ingredient composition and more often mentioned the generic name of the drug when buying the drug. Respondents preferred paracetamol to deal with pain complaints. The place of purchase of self-medicated drugs is more dominant in pharmacies. Most of the reasons for doing self-medication were because of the experience of recovering with the same medicine and the perception that the disease was mild.