afrisca maharani - Academia.edu (original) (raw)

Papers by afrisca maharani

Journal of Dentistry Indonesia, 2018

Few studies have reported the role of motivation in patient adherence to dental-care programmes o... more Few studies have reported the role of motivation in patient adherence to dental-care programmes or dental homecare and prevention of oral disease, particularly in Indonesia. Objective: To cross-adapt the Self-Regulation forDental Home Care Questionnaire (SRDHCQ) to the Indonesian version, and to study self-regulation for dentalhome care among adolescents. Methods: The SRDHCQ was cross culturally adapted to the Indonesian adolescentsaged 12-13 years old to test its reliability and validity. Intraoral examination was conducted by a single examiner toanalyse the number of decayed teeth. The SRDHCQ contains 22 questions with a 7-point scale, which comprisesof integrated, identified, introjected, external regulation and amotivation domains. Respondents were randomlyselected from 11 junior high schools at six districts in Jakarta. Results: Total respondents studied were 317 students,with prevalence of 71% of the students having decayed teeth, and average number decayed teeth was 2.1. The ...

This study aimed to determine a teacher's perception of first class of elementary school towa... more This study aimed to determine a teacher's perception of first class of elementary school toward thematic learning. Data collection used in-depth interview techniques for elementary school teachers in Luhak Tanah Datar and Luhak Agam. Data was conducted qualitatively. The results of the interview indicates that the teachers do not understand thematic learning comprehensively. Teachers assume that new thematic learning models can be applied if students have already been good at reading, writing, and counting. This condition affects on the thematic learning process conducted by teachers requiring prospective first-class elementary school students to be able to read and write.

BMC Oral Health

Background The coronavirus outbreak (COVID-19) in China has influenced every aspect of life world... more Background The coronavirus outbreak (COVID-19) in China has influenced every aspect of life worldwide. Given the unique characteristics of the dental setting, the risk of cross-infection between dental practitioners and patients is high in the absence of adequate protective measures, and dentists may develop severe anxiety in relation to the current pandemic. The limited provision of services and widespread closure of dental practices have raised concerns among dental professionals about the financial impact. The present study assessed the frequency of dental practice closure during the pandemic’s first wave in several countries and whether closures and their associated factors differ between the private and non-private sectors. Methods An electronic cross-sectional survey questionnaire was sent to dentists in several countries, from April to May 2020. The survey assessed professional, practice related and country-level structural factors elucidating the reason for practice closure....

International Journal of Environmental Research and Public Health

Dental academic institutions are affected by COVID-19. We assessed the perceived COVID-19 prepare... more Dental academic institutions are affected by COVID-19. We assessed the perceived COVID-19 preparedness of these institutions and the characteristics of institutions with greater perceived preparedness. An international cross-sectional survey of dental academics was conducted from March to August 2020 to assess academics’ and institutional attributes, perceived preparedness, and availability of infection prevention and control (IPC) equipment. Principal component analysis (PCA) identified perceived preparedness components. Multilevel linear regression analysis assessed the association between perceived preparedness and fixed effect factors (academics’ and institutions’ attributes) with countries as random effect variable. Of the 1820 dental academics from 28 countries, 78.4% worked in public institutions and 75.2% reported temporary closure. PCA showed five components: clinic apparel, measures before and after patient care, institutional policies, and availability of IPC equipment. S...

Journal of Stomatology

Introduction: Information on the fluoride content in toothpastes commercialised in Indonesia is n... more Introduction: Information on the fluoride content in toothpastes commercialised in Indonesia is not yet available. Objectives: The objective of this study is to determine the fluoride content of toothpastes marketed in Indonesia and to determine if the fluoride content is in accordance with the information provided on the packaging and following the standards from evidence-based dentistry and Indonesian regulations. Material and methods: In vitro analysis of total fluoride (TF) in 10 brands of toothpaste for adults and eight for children, purchased from different stores. The toothpastes were analysed in triplicate using a fluoride ion-selective electrode. Statistical analyses were performed using a one-sample t-test or one-sample Wilcoxon signed-rank test to compare the difference between the fluoride concentration stated on the tube and the measured value. Results: The TF concentration in toothpastes for adults and children did not match the fluoride content provided on the packaging for most samples. Eleven toothpaste brands contained fluoride > 1000 ppm F, whereas the others contained fluoride < 1000 ppm F. Only one toothpaste contained fluoride that matched the standard from evidence-based dentistry and Indonesian regulations. Conclusions: Most toothpastes for adults marketed in Indonesia do not meet the required fluoride concentration for caries control. The results call for strengthened regulation and quality control of fluoride toothpaste in Indonesia to provide the maximum anti-caries effect.

Background: COVID-19 is a global pandemic affecting all aspects of life in all countries. We asse... more Background: COVID-19 is a global pandemic affecting all aspects of life in all countries. We assessed COVID-19 knowledge and associated factors among dental academics in various countries. Method: We invited dental academics to participate in a cross-sectional, multi-country, online survey from March to April 2020. The survey assessed knowledge of COVID-19 regarding the mode of transmission, symptoms, diagnosis, treatment, protection, and dental treatment precautions as well as participants’ background variables. The analysis was based on multilevel linear models to assess the association between knowledge and factors at individual levels (personal and professional) and country-level (number of COVID-19 cases/ million population), accounting for random variation among countries. Results: Two thousand forty-five academics from 26 countries participated in the survey (response rate= 14.3%, with 54.7% female and 67% younger than 46 years of age). The mean (SD) knowledge percent score w...

Journal of Physics: Conference Series

Mengkarang area is part of Merangin National Geopark, Jambi Province, Indonesia. The area is main... more Mengkarang area is part of Merangin National Geopark, Jambi Province, Indonesia. The area is mainly consisted of Permian and Jurassic rocks and known for its well-preserved fossils, where the occurrence of this fossils could demonstrate the massive extinction of Permian Age. Despite numerous studies on fossils of Mengkarang area have been published, only a few petrographical studies conducted on Mengkarang area. Such study is important in the future to better determine the petrotectonic setting of the Mengkarang area. We collected several igneous, volcaniclastic, and sedimentary rock samples from various rock formations in the study area. By combining the field observation and petrographic analyses, we made several assumptions that can link Mengkarang rocks to the Paleozoic-Mesozoic volcanic activity and deformation. The vitric tuff displays flow banding and welded features. Some of the petrographic samples show low-moderate argillic to intense propylitic alteration that related to volcanic activity, with several deformation evidence. Other samples show biotite minerals that altered to chlorite and deformed by the formational compaction. Furthermore, the rocks in the southern part of the Mengkarang area generally experienced stronger deformation compared to another part of the study area.

Makara Journal of Health Research

Background: Epidemiological data on gingival status in children is important because periodontal ... more Background: Epidemiological data on gingival status in children is important because periodontal disease is one of the most prevalent diseases in Indonesia. This study aimed to assess the gingival health status and its associated factors among 12-year-old schoolchildren in Jakarta. Methods: This was a cross-sectional study of 12-year-old schoolchildren. There were 481 students who were recruited from 24 public and private junior high schools in Jakarta using multistage cluster proportional-to-size random sampling. Periodontal status was recorded using the community periodontal index (CPI) based on World Health Organization standards. A self-completed questionnaire was given to the parents to collect information on children's backgrounds and oral health-related behaviours. Results: Only 3 of 478 participating children had healthy gums (no bleeding gums and no calculus). 99% of the children had bleeding gums and 84% had calculus. The prevalence of calculus was higher in girls than in boys. Periodontal status was not significantly related to tooth brushing habits or dental checkups. Conclusions: Poor periodontal conditions were highly prevalent among 12-yearold schoolchildren in Jakarta. Oral health promotion and prevention strategies are urgently required.

IOP Conference Series: Earth and Environmental Science

The need for space within the city is increasing. The city itself has residual spaces that are co... more The need for space within the city is increasing. The city itself has residual spaces that are considered non-functional. Supported by factors such as the need for space and an attachment to the space itself, residual space has the possibility to be appropriated (taken over) by the city dwellers. One of residual spaces within the city is an unused riverfront. The city of Jakarta is bypassed by the Ciliwung River. In the Dutch colonial era, there was an increase of immigrants consisting of laborers and hired workers who needed shelter, resulting in slums or river-side settlements, as the river are the only source of clean water for villages that do not have adequate facilities. The Ciliwung River was then used as a sewer, which prompted the government to erect fences on the banks of the Ciliwung River, creating residual spaces on the banks of the Ciliwung River. Although the river is viewed as residual space for other city dwellers, a section of Ciliwung is appropriated by a number of villagers in the Cikini area. By observing the appropriation activity as an alteration resulting in the transformation of a residual space, it will show the potential of the residual space itself and the emergence of functionality in the residual space

Journal of Physics: Conference Series

The process of thinking of students in understanding concepts and solving problems about geometry... more The process of thinking of students in understanding concepts and solving problems about geometry influenced by the cognitive ability of the level of geometry thinking of students, whether male or female. Van Hiele explained that there are five levels of thinking geometry. This study was conducted to determine the cognitive abilities of junior high school students based on Van Hiele's geometry thinking level viewed from a gender perspective. The method used is a descriptive qualitative method with question instruments and interview guidelines. The research subjects were six female students and six male students. The results of tests and interviews were analysed to determine the level of the tendency of students' geometric thinking. Research results show that there are four male students at level 3 (Deduction) and two students at level 2 (Informal Deduction).Whereas for female students there were three students at level 3 (deduction), two students at level 2 (simple deduction) and one student at level 1 (analysis). Male students are better at visual abilities and prefer simple ways of writing answers, while female students are better at verbal abilities and neater in writing answers. So it can be stated that male students tend to be superior to female students. This can be the basis for the treatment of students based on gender and cognitive abilities of students' level of geometry thinking.

Journal of Physics: Conference Series

This research aims to determine the interaction that occurs in the process of learning mathematic... more This research aims to determine the interaction that occurs in the process of learning mathematics process. In general, this research is about improving the ability of mathematical disposition of vocational high school students. The learning took place in 2 schools with different levels. This research was quasi-experiment research. The data analysis techniques performed by using the Gain test and ANOVA test. The result shows that there was an increase of students' mathematical disposition ability in the class using PBL model and PBL-Teaching Teachers for both middle and low-level schools. At a medium level, improving the mathematical disposition of students with PBL-Team Teaching methods is better than PBL and conventional models. There is a significant interaction between mathematical disposition abilities based on the schools level and the use of learning models. There is no interaction between mathematical disposition ability and the use of learning model when viewed from Mathematical Preliminary Ability.

SSM annual scientific meeting 2017

Innovation in Aging

This first presentation will be undertaken by the Chief Investigator of the Neighbourhoods study ... more This first presentation will be undertaken by the Chief Investigator of the Neighbourhoods study and will present an overview of the eight WPs that comprise the entire programme. Particular attention will be paid to the theoretical positioning of neighbourhoods and in the work conducted by people with dementia and their families in contributing towards the research programme. This will include exploring partnership working with the Center for Dementia Research in Sweden and the need for methods development when working alongside people with dementia to explore their value-base and research agenda. Specific attention will be paid to the development of the CO-research INvolvement and Engagement in Dementia model (COINED; Swarbrick et al. 2017), which was co-led by Caroline Swarbrick (Principal Investigator for WP1 on the Neighbourhoods study) and used a cooperative inquiry approach with groups of people with dementia to generate the model. This process and involvement took around three years.

The Merangin district, Jambi Province, is the national Geopark because it has unique geological d... more The Merangin district, Jambi Province, is the national Geopark because it has unique geological diversity if compared to other areas due to the discovery of Permian rocks in Merangin district. However, the Merangin district has a high earthquake activity level. The aim of this research is to know the relationship between the geological conditions in the subsurface with earthquake activity level in the research area. The methods conducted in this research was direct measurement method in the field, in the form of geological structure mapping. The dip and strike data were then analyzed in order to know the main stress and strain of rocks. Studio analysis method was also conducted, which included three analyses. First, lineament analysis of the ridge and valley from DEM SRTM (Digital Elevation Model Shuttle Radar Topography Mission) satellite imagery. Second, the analysis of potential earthquakes using the records of past earthquakes and the geometry of the faults in the form of a seismotectonic map. Third, morphometry map analysis. The geological structure mapping in the area shows that the joint direction oriented Northeast-Southwest. Meanwhile, the analysis of geological structure through DEM SRTM and from the earthquake data displayed five earthquake epicenters with a depth of more than 100 km in the subsurface with magnitude scale 4.2-4.4 Richter Scale (RS). Thus, the earthquake which occurred in the research area were all due to the subduction zone. In the morphometric map, it shows that the geomorphology in the area of research is split into two main classifications, moderately steep in upper zone and sloping in the lower zone. In conclusion, though the Geopark Merangin has many high earthquake activity levels, but since they occur due to the subduction zone, the earthquake can be classified as a middle-scale and have less effect on the surface.

Synthesis of bio-composite from recycled polypropylene (rPP) using bamboo powder (BP) as a filler... more Synthesis of bio-composite from recycled polypropylene (rPP) using bamboo powder (BP) as a filler had been carried out. Five levels of filler loading with or without divinyl benzene (DVB) were designed. The influence of filler concentration could improve tensile strength (TS) up to the optimum condition (ratio rPP/BP = 8/2). The effect of the bamboo particle size showed that the TS increased as the size of the particle smaller. The effect of BP particle size showed that the bigger of its size gave better bio-degradation properties. The use of DVB for the synthesis of bio-composites showed more biodegradable than without DVB.

Dentika Dental Journal, May 27, 2013

Abstract Health risk appraisal (HRA) is probably the most widely used health education tool for p... more Abstract Health risk appraisal (HRA) is probably the most widely used health education tool for promoting individual behavior change, such as health promoting to the community by care givers in Posyandu use tailored message in which describes about dental biofilms as an aethiology of dental caries disease, to remove dental biofilm is done by appropriate method and with regular toothbrush. The aim of study was to evaluate the effectiveness of oral health promotion intervention using oral health evaluation card called KMGS to increase oral health children aged 24-60 months in Posyandu. The number of respondents who signed informed consent were 54 couples mothers and children under five, they were got a complete dental examination, all care givers in Posyandu were trained by dentist how to filled KMGS to measure the risk of ECC. The effect of the oral health promotion programmes to mother by caregiver on oral hygiene (plaque score, and maturity of plaque score), were evaluated in the second and third of month. All datas were analysis used Anova test and Pearson correlation. The score 0 of maturity plaque in the last study was indicated had increase significantly (p 51) of mother was increase significantly after 3 month intervention, a significant correlation between oral hygiene of children and behavior of mother (Pearson’s R =0.337, p 51 terhadap kesehatan gigi (p<0,05), disamping itu ada hubungan yang bermakna antara kebersihan gigi anak dengan perubahan perilaku ibu dengan nilai Pearson’s r 0,337 (p<0,05). Sebagai kesimpulan, program promosi kesehatan gigi dan mulut di Posyandu oleh kader menggunakan tailored message dalam bentuk KMGS efektif meningkatkan perilaku dalam pemeliharaan kesehatan gigi dan mulut, yang berdampak menurunkan faktor risiko ECC pada anak balita. Kata kunci: balita, perilaku ibu, pesan

Journal of Dentistry Indonesia, 2014

Fluoride and calcium play an important role in the prevention of dental caries, promoting the inh... more Fluoride and calcium play an important role in the prevention of dental caries, promoting the inhibition of demineralization and the increase of remineralization. Objective: To investigate the effects of milk with/without the combination of tea and 0.2% NaF on enamel demineralization using micro-computed tomography (micro-CT). Methods: The coronal parts of 40 extracted sound premolars were prepared as tooth blocks. An unvarnished occlusal surface window was created for each tooth by covering the occlusal surface with a 3x5 mm 2 sticker and painting all other surfaces with an acid-resistant varnish. These blocks were randomly allocated into four groups that were immersed in remineralizing solutions for 26 minutes: Group A, milk; Group B, milk and tea; Group C, milk and 0.2% NaF; and Group D, deionized water (control). Results: After 3 days of immersion in a buffered demineralization solution at pH 4.4, micro-CT scans were taken. The mean grayscale values and the standard deviations are: 98.1 ± 24.0; 90.8 ± 9.1; 92.6 ± 21.4; 81.1 ± 20.3, respectively. The mean grayscale values were significantly different among the four groups (p<0.05), except between groups A and B and between groups A and C. Conclusion: Topical application with milk alone showed a higher protective effect against demineralization compared to the synergic application of milk and tea and milk and 0.2% NaF. ABSTRAK Efek susu, kombinasinya dengan teh, dan NaF 0,2% terhadap demineralisasi email gigi: analisis microcomputed tomography. Fluor dan kalsium berperan penting dalam pencegahan karies gigi, karena dapat menghambat demineralisasi dan meningkatkan remineralisasi Tujuan: Menganalisis efek dari susu sendiri dan kombinasi dengan teh, dan NaF 0,2% pada demineralisasi email gigi menggunakan micro-computed tomography (micro-CT). Metode: Pada bagian koronal 40 gigi premolar manusia yang telah diekstraksi, dibuatkan region of interest. Permukaan oklusal tiap gigi tersebut ditutupi stiker 3x5 mm 2 dan semua permukaan lainnya ditutupi dengan pernis tahan asam. Gigi-gigi yang telah dipersiapkan ini secara acak dan dialokasikan ke dalam empat kelompok yang direndam dalam larutan remineralisasi selama 26 menit, yakni: Grup A, susu; Grup B, susu dan teh; Grup C, susu dan NaF 0,2%; dan Grup D, deionized air (kontrol). Hasil: Setelah 3 hari perendaman dalam larutan buffer pada pH 4,4, dilakukan pemindaian dengan micro-CT. Nilai rata-rata grayscale dan standar deviasi

Aluminosilicate, alkaline solution and fly ash from a power plant have been used to synthesize ge... more Aluminosilicate, alkaline solution and fly ash from a power plant have been used to synthesize geopolymer at ambient temperature. SiO 2 /Al 2 O 3 mole ratio of the starting materials was varied by the addition of pure, insoluble corundum and quartz. The geopolymer exhibited some differences in the ratio of initial reaction mixtures and that of final products. The corundum gave no influence to the compressive strength while the quartz at SiO 2 /Al 2 O 3 =4.0-6.0 produced significant change in the strength. The highest compressive strength achieved was 65 MPa. XRD using analysis Rietveld method proved that quartz has been found both in starting materials as well as in the geopolymer indicating the involvement of crystalline phases, to some extent, in geopolymerization process.

Medical Journal of Indonesia, 2015

Background: This study was aimed to determine the frequency of thalassemia and Hb variant in bloo... more Background: This study was aimed to determine the frequency of thalassemia and Hb variant in blood donor. In addition, we also wanted to know the quality of blood from the donor up to seven days of storage, by calculating percentage of hemolysis in vitro.Methods: This cross-sectional study was conducted on 138 blood donor specimens at Red Cross Blood Centre Unit in Jakarta. All specimens were tested for thalassemia and Hb variant by complete blood count (CBC) and Hb analysis with HPLC method and DNA analysis for the detection of α thalassemia carrier. To analyze the quality of stored blood, the calculation of hemolytic rate of red blood cells (RBCs) on whole blood (WB) was compared between the first and seventh days of storage.Results: Out of the 138 specimens, 5 samples (3.6%) were diagnosed for α thalassemia carrier in which, one of them is co-inherited with ovalositosis hereditary (Southeast Asian Ovalositosis/SAO), 3 samples (2.2%) for β thalassemia carrier, and 3 samples (2.2%)...

Journal of Dentistry Indonesia, 2018

Few studies have reported the role of motivation in patient adherence to dental-care programmes o... more Few studies have reported the role of motivation in patient adherence to dental-care programmes or dental homecare and prevention of oral disease, particularly in Indonesia. Objective: To cross-adapt the Self-Regulation forDental Home Care Questionnaire (SRDHCQ) to the Indonesian version, and to study self-regulation for dentalhome care among adolescents. Methods: The SRDHCQ was cross culturally adapted to the Indonesian adolescentsaged 12-13 years old to test its reliability and validity. Intraoral examination was conducted by a single examiner toanalyse the number of decayed teeth. The SRDHCQ contains 22 questions with a 7-point scale, which comprisesof integrated, identified, introjected, external regulation and amotivation domains. Respondents were randomlyselected from 11 junior high schools at six districts in Jakarta. Results: Total respondents studied were 317 students,with prevalence of 71% of the students having decayed teeth, and average number decayed teeth was 2.1. The ...

This study aimed to determine a teacher's perception of first class of elementary school towa... more This study aimed to determine a teacher's perception of first class of elementary school toward thematic learning. Data collection used in-depth interview techniques for elementary school teachers in Luhak Tanah Datar and Luhak Agam. Data was conducted qualitatively. The results of the interview indicates that the teachers do not understand thematic learning comprehensively. Teachers assume that new thematic learning models can be applied if students have already been good at reading, writing, and counting. This condition affects on the thematic learning process conducted by teachers requiring prospective first-class elementary school students to be able to read and write.

BMC Oral Health

Background The coronavirus outbreak (COVID-19) in China has influenced every aspect of life world... more Background The coronavirus outbreak (COVID-19) in China has influenced every aspect of life worldwide. Given the unique characteristics of the dental setting, the risk of cross-infection between dental practitioners and patients is high in the absence of adequate protective measures, and dentists may develop severe anxiety in relation to the current pandemic. The limited provision of services and widespread closure of dental practices have raised concerns among dental professionals about the financial impact. The present study assessed the frequency of dental practice closure during the pandemic’s first wave in several countries and whether closures and their associated factors differ between the private and non-private sectors. Methods An electronic cross-sectional survey questionnaire was sent to dentists in several countries, from April to May 2020. The survey assessed professional, practice related and country-level structural factors elucidating the reason for practice closure....

International Journal of Environmental Research and Public Health

Dental academic institutions are affected by COVID-19. We assessed the perceived COVID-19 prepare... more Dental academic institutions are affected by COVID-19. We assessed the perceived COVID-19 preparedness of these institutions and the characteristics of institutions with greater perceived preparedness. An international cross-sectional survey of dental academics was conducted from March to August 2020 to assess academics’ and institutional attributes, perceived preparedness, and availability of infection prevention and control (IPC) equipment. Principal component analysis (PCA) identified perceived preparedness components. Multilevel linear regression analysis assessed the association between perceived preparedness and fixed effect factors (academics’ and institutions’ attributes) with countries as random effect variable. Of the 1820 dental academics from 28 countries, 78.4% worked in public institutions and 75.2% reported temporary closure. PCA showed five components: clinic apparel, measures before and after patient care, institutional policies, and availability of IPC equipment. S...

Journal of Stomatology

Introduction: Information on the fluoride content in toothpastes commercialised in Indonesia is n... more Introduction: Information on the fluoride content in toothpastes commercialised in Indonesia is not yet available. Objectives: The objective of this study is to determine the fluoride content of toothpastes marketed in Indonesia and to determine if the fluoride content is in accordance with the information provided on the packaging and following the standards from evidence-based dentistry and Indonesian regulations. Material and methods: In vitro analysis of total fluoride (TF) in 10 brands of toothpaste for adults and eight for children, purchased from different stores. The toothpastes were analysed in triplicate using a fluoride ion-selective electrode. Statistical analyses were performed using a one-sample t-test or one-sample Wilcoxon signed-rank test to compare the difference between the fluoride concentration stated on the tube and the measured value. Results: The TF concentration in toothpastes for adults and children did not match the fluoride content provided on the packaging for most samples. Eleven toothpaste brands contained fluoride > 1000 ppm F, whereas the others contained fluoride < 1000 ppm F. Only one toothpaste contained fluoride that matched the standard from evidence-based dentistry and Indonesian regulations. Conclusions: Most toothpastes for adults marketed in Indonesia do not meet the required fluoride concentration for caries control. The results call for strengthened regulation and quality control of fluoride toothpaste in Indonesia to provide the maximum anti-caries effect.

Background: COVID-19 is a global pandemic affecting all aspects of life in all countries. We asse... more Background: COVID-19 is a global pandemic affecting all aspects of life in all countries. We assessed COVID-19 knowledge and associated factors among dental academics in various countries. Method: We invited dental academics to participate in a cross-sectional, multi-country, online survey from March to April 2020. The survey assessed knowledge of COVID-19 regarding the mode of transmission, symptoms, diagnosis, treatment, protection, and dental treatment precautions as well as participants’ background variables. The analysis was based on multilevel linear models to assess the association between knowledge and factors at individual levels (personal and professional) and country-level (number of COVID-19 cases/ million population), accounting for random variation among countries. Results: Two thousand forty-five academics from 26 countries participated in the survey (response rate= 14.3%, with 54.7% female and 67% younger than 46 years of age). The mean (SD) knowledge percent score w...

Journal of Physics: Conference Series

Mengkarang area is part of Merangin National Geopark, Jambi Province, Indonesia. The area is main... more Mengkarang area is part of Merangin National Geopark, Jambi Province, Indonesia. The area is mainly consisted of Permian and Jurassic rocks and known for its well-preserved fossils, where the occurrence of this fossils could demonstrate the massive extinction of Permian Age. Despite numerous studies on fossils of Mengkarang area have been published, only a few petrographical studies conducted on Mengkarang area. Such study is important in the future to better determine the petrotectonic setting of the Mengkarang area. We collected several igneous, volcaniclastic, and sedimentary rock samples from various rock formations in the study area. By combining the field observation and petrographic analyses, we made several assumptions that can link Mengkarang rocks to the Paleozoic-Mesozoic volcanic activity and deformation. The vitric tuff displays flow banding and welded features. Some of the petrographic samples show low-moderate argillic to intense propylitic alteration that related to volcanic activity, with several deformation evidence. Other samples show biotite minerals that altered to chlorite and deformed by the formational compaction. Furthermore, the rocks in the southern part of the Mengkarang area generally experienced stronger deformation compared to another part of the study area.

Makara Journal of Health Research

Background: Epidemiological data on gingival status in children is important because periodontal ... more Background: Epidemiological data on gingival status in children is important because periodontal disease is one of the most prevalent diseases in Indonesia. This study aimed to assess the gingival health status and its associated factors among 12-year-old schoolchildren in Jakarta. Methods: This was a cross-sectional study of 12-year-old schoolchildren. There were 481 students who were recruited from 24 public and private junior high schools in Jakarta using multistage cluster proportional-to-size random sampling. Periodontal status was recorded using the community periodontal index (CPI) based on World Health Organization standards. A self-completed questionnaire was given to the parents to collect information on children's backgrounds and oral health-related behaviours. Results: Only 3 of 478 participating children had healthy gums (no bleeding gums and no calculus). 99% of the children had bleeding gums and 84% had calculus. The prevalence of calculus was higher in girls than in boys. Periodontal status was not significantly related to tooth brushing habits or dental checkups. Conclusions: Poor periodontal conditions were highly prevalent among 12-yearold schoolchildren in Jakarta. Oral health promotion and prevention strategies are urgently required.

IOP Conference Series: Earth and Environmental Science

The need for space within the city is increasing. The city itself has residual spaces that are co... more The need for space within the city is increasing. The city itself has residual spaces that are considered non-functional. Supported by factors such as the need for space and an attachment to the space itself, residual space has the possibility to be appropriated (taken over) by the city dwellers. One of residual spaces within the city is an unused riverfront. The city of Jakarta is bypassed by the Ciliwung River. In the Dutch colonial era, there was an increase of immigrants consisting of laborers and hired workers who needed shelter, resulting in slums or river-side settlements, as the river are the only source of clean water for villages that do not have adequate facilities. The Ciliwung River was then used as a sewer, which prompted the government to erect fences on the banks of the Ciliwung River, creating residual spaces on the banks of the Ciliwung River. Although the river is viewed as residual space for other city dwellers, a section of Ciliwung is appropriated by a number of villagers in the Cikini area. By observing the appropriation activity as an alteration resulting in the transformation of a residual space, it will show the potential of the residual space itself and the emergence of functionality in the residual space

Journal of Physics: Conference Series

The process of thinking of students in understanding concepts and solving problems about geometry... more The process of thinking of students in understanding concepts and solving problems about geometry influenced by the cognitive ability of the level of geometry thinking of students, whether male or female. Van Hiele explained that there are five levels of thinking geometry. This study was conducted to determine the cognitive abilities of junior high school students based on Van Hiele's geometry thinking level viewed from a gender perspective. The method used is a descriptive qualitative method with question instruments and interview guidelines. The research subjects were six female students and six male students. The results of tests and interviews were analysed to determine the level of the tendency of students' geometric thinking. Research results show that there are four male students at level 3 (Deduction) and two students at level 2 (Informal Deduction).Whereas for female students there were three students at level 3 (deduction), two students at level 2 (simple deduction) and one student at level 1 (analysis). Male students are better at visual abilities and prefer simple ways of writing answers, while female students are better at verbal abilities and neater in writing answers. So it can be stated that male students tend to be superior to female students. This can be the basis for the treatment of students based on gender and cognitive abilities of students' level of geometry thinking.

Journal of Physics: Conference Series

This research aims to determine the interaction that occurs in the process of learning mathematic... more This research aims to determine the interaction that occurs in the process of learning mathematics process. In general, this research is about improving the ability of mathematical disposition of vocational high school students. The learning took place in 2 schools with different levels. This research was quasi-experiment research. The data analysis techniques performed by using the Gain test and ANOVA test. The result shows that there was an increase of students' mathematical disposition ability in the class using PBL model and PBL-Teaching Teachers for both middle and low-level schools. At a medium level, improving the mathematical disposition of students with PBL-Team Teaching methods is better than PBL and conventional models. There is a significant interaction between mathematical disposition abilities based on the schools level and the use of learning models. There is no interaction between mathematical disposition ability and the use of learning model when viewed from Mathematical Preliminary Ability.

SSM annual scientific meeting 2017

Innovation in Aging

This first presentation will be undertaken by the Chief Investigator of the Neighbourhoods study ... more This first presentation will be undertaken by the Chief Investigator of the Neighbourhoods study and will present an overview of the eight WPs that comprise the entire programme. Particular attention will be paid to the theoretical positioning of neighbourhoods and in the work conducted by people with dementia and their families in contributing towards the research programme. This will include exploring partnership working with the Center for Dementia Research in Sweden and the need for methods development when working alongside people with dementia to explore their value-base and research agenda. Specific attention will be paid to the development of the CO-research INvolvement and Engagement in Dementia model (COINED; Swarbrick et al. 2017), which was co-led by Caroline Swarbrick (Principal Investigator for WP1 on the Neighbourhoods study) and used a cooperative inquiry approach with groups of people with dementia to generate the model. This process and involvement took around three years.

The Merangin district, Jambi Province, is the national Geopark because it has unique geological d... more The Merangin district, Jambi Province, is the national Geopark because it has unique geological diversity if compared to other areas due to the discovery of Permian rocks in Merangin district. However, the Merangin district has a high earthquake activity level. The aim of this research is to know the relationship between the geological conditions in the subsurface with earthquake activity level in the research area. The methods conducted in this research was direct measurement method in the field, in the form of geological structure mapping. The dip and strike data were then analyzed in order to know the main stress and strain of rocks. Studio analysis method was also conducted, which included three analyses. First, lineament analysis of the ridge and valley from DEM SRTM (Digital Elevation Model Shuttle Radar Topography Mission) satellite imagery. Second, the analysis of potential earthquakes using the records of past earthquakes and the geometry of the faults in the form of a seismotectonic map. Third, morphometry map analysis. The geological structure mapping in the area shows that the joint direction oriented Northeast-Southwest. Meanwhile, the analysis of geological structure through DEM SRTM and from the earthquake data displayed five earthquake epicenters with a depth of more than 100 km in the subsurface with magnitude scale 4.2-4.4 Richter Scale (RS). Thus, the earthquake which occurred in the research area were all due to the subduction zone. In the morphometric map, it shows that the geomorphology in the area of research is split into two main classifications, moderately steep in upper zone and sloping in the lower zone. In conclusion, though the Geopark Merangin has many high earthquake activity levels, but since they occur due to the subduction zone, the earthquake can be classified as a middle-scale and have less effect on the surface.

Synthesis of bio-composite from recycled polypropylene (rPP) using bamboo powder (BP) as a filler... more Synthesis of bio-composite from recycled polypropylene (rPP) using bamboo powder (BP) as a filler had been carried out. Five levels of filler loading with or without divinyl benzene (DVB) were designed. The influence of filler concentration could improve tensile strength (TS) up to the optimum condition (ratio rPP/BP = 8/2). The effect of the bamboo particle size showed that the TS increased as the size of the particle smaller. The effect of BP particle size showed that the bigger of its size gave better bio-degradation properties. The use of DVB for the synthesis of bio-composites showed more biodegradable than without DVB.

Dentika Dental Journal, May 27, 2013

Abstract Health risk appraisal (HRA) is probably the most widely used health education tool for p... more Abstract Health risk appraisal (HRA) is probably the most widely used health education tool for promoting individual behavior change, such as health promoting to the community by care givers in Posyandu use tailored message in which describes about dental biofilms as an aethiology of dental caries disease, to remove dental biofilm is done by appropriate method and with regular toothbrush. The aim of study was to evaluate the effectiveness of oral health promotion intervention using oral health evaluation card called KMGS to increase oral health children aged 24-60 months in Posyandu. The number of respondents who signed informed consent were 54 couples mothers and children under five, they were got a complete dental examination, all care givers in Posyandu were trained by dentist how to filled KMGS to measure the risk of ECC. The effect of the oral health promotion programmes to mother by caregiver on oral hygiene (plaque score, and maturity of plaque score), were evaluated in the second and third of month. All datas were analysis used Anova test and Pearson correlation. The score 0 of maturity plaque in the last study was indicated had increase significantly (p 51) of mother was increase significantly after 3 month intervention, a significant correlation between oral hygiene of children and behavior of mother (Pearson’s R =0.337, p 51 terhadap kesehatan gigi (p<0,05), disamping itu ada hubungan yang bermakna antara kebersihan gigi anak dengan perubahan perilaku ibu dengan nilai Pearson’s r 0,337 (p<0,05). Sebagai kesimpulan, program promosi kesehatan gigi dan mulut di Posyandu oleh kader menggunakan tailored message dalam bentuk KMGS efektif meningkatkan perilaku dalam pemeliharaan kesehatan gigi dan mulut, yang berdampak menurunkan faktor risiko ECC pada anak balita. Kata kunci: balita, perilaku ibu, pesan

Journal of Dentistry Indonesia, 2014

Fluoride and calcium play an important role in the prevention of dental caries, promoting the inh... more Fluoride and calcium play an important role in the prevention of dental caries, promoting the inhibition of demineralization and the increase of remineralization. Objective: To investigate the effects of milk with/without the combination of tea and 0.2% NaF on enamel demineralization using micro-computed tomography (micro-CT). Methods: The coronal parts of 40 extracted sound premolars were prepared as tooth blocks. An unvarnished occlusal surface window was created for each tooth by covering the occlusal surface with a 3x5 mm 2 sticker and painting all other surfaces with an acid-resistant varnish. These blocks were randomly allocated into four groups that were immersed in remineralizing solutions for 26 minutes: Group A, milk; Group B, milk and tea; Group C, milk and 0.2% NaF; and Group D, deionized water (control). Results: After 3 days of immersion in a buffered demineralization solution at pH 4.4, micro-CT scans were taken. The mean grayscale values and the standard deviations are: 98.1 ± 24.0; 90.8 ± 9.1; 92.6 ± 21.4; 81.1 ± 20.3, respectively. The mean grayscale values were significantly different among the four groups (p<0.05), except between groups A and B and between groups A and C. Conclusion: Topical application with milk alone showed a higher protective effect against demineralization compared to the synergic application of milk and tea and milk and 0.2% NaF. ABSTRAK Efek susu, kombinasinya dengan teh, dan NaF 0,2% terhadap demineralisasi email gigi: analisis microcomputed tomography. Fluor dan kalsium berperan penting dalam pencegahan karies gigi, karena dapat menghambat demineralisasi dan meningkatkan remineralisasi Tujuan: Menganalisis efek dari susu sendiri dan kombinasi dengan teh, dan NaF 0,2% pada demineralisasi email gigi menggunakan micro-computed tomography (micro-CT). Metode: Pada bagian koronal 40 gigi premolar manusia yang telah diekstraksi, dibuatkan region of interest. Permukaan oklusal tiap gigi tersebut ditutupi stiker 3x5 mm 2 dan semua permukaan lainnya ditutupi dengan pernis tahan asam. Gigi-gigi yang telah dipersiapkan ini secara acak dan dialokasikan ke dalam empat kelompok yang direndam dalam larutan remineralisasi selama 26 menit, yakni: Grup A, susu; Grup B, susu dan teh; Grup C, susu dan NaF 0,2%; dan Grup D, deionized air (kontrol). Hasil: Setelah 3 hari perendaman dalam larutan buffer pada pH 4,4, dilakukan pemindaian dengan micro-CT. Nilai rata-rata grayscale dan standar deviasi

Aluminosilicate, alkaline solution and fly ash from a power plant have been used to synthesize ge... more Aluminosilicate, alkaline solution and fly ash from a power plant have been used to synthesize geopolymer at ambient temperature. SiO 2 /Al 2 O 3 mole ratio of the starting materials was varied by the addition of pure, insoluble corundum and quartz. The geopolymer exhibited some differences in the ratio of initial reaction mixtures and that of final products. The corundum gave no influence to the compressive strength while the quartz at SiO 2 /Al 2 O 3 =4.0-6.0 produced significant change in the strength. The highest compressive strength achieved was 65 MPa. XRD using analysis Rietveld method proved that quartz has been found both in starting materials as well as in the geopolymer indicating the involvement of crystalline phases, to some extent, in geopolymerization process.

Medical Journal of Indonesia, 2015

Background: This study was aimed to determine the frequency of thalassemia and Hb variant in bloo... more Background: This study was aimed to determine the frequency of thalassemia and Hb variant in blood donor. In addition, we also wanted to know the quality of blood from the donor up to seven days of storage, by calculating percentage of hemolysis in vitro.Methods: This cross-sectional study was conducted on 138 blood donor specimens at Red Cross Blood Centre Unit in Jakarta. All specimens were tested for thalassemia and Hb variant by complete blood count (CBC) and Hb analysis with HPLC method and DNA analysis for the detection of α thalassemia carrier. To analyze the quality of stored blood, the calculation of hemolytic rate of red blood cells (RBCs) on whole blood (WB) was compared between the first and seventh days of storage.Results: Out of the 138 specimens, 5 samples (3.6%) were diagnosed for α thalassemia carrier in which, one of them is co-inherited with ovalositosis hereditary (Southeast Asian Ovalositosis/SAO), 3 samples (2.2%) for β thalassemia carrier, and 3 samples (2.2%)...