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Nusantara Science and Technology Proceedings
Published by Future Science
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Articles 1,542 Documents
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Identification of Environmental Impacts on The Jabon Stool Sludge Treatment (IPLT) Process Using the Life Cycle Assessment (LCA) Method
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2758

Abstract

Sludge treatment at the IPLT is an advanced treatment activity the sewage sludge in the septic tank is not suitable for disposal to the environment because it still contains organic high. The Jabon Sidoarjo IPLT is the object of research and aims to determine the environmental impact caused by the sewage sludge treatment process at the Jabon Sidoarjo IPLT using the Life Cycle Assessment (LCA) Method. Life cycle assessment (LCA) is used to conduct an environmental impact assessment using the Impact 2002+ method and using a gate-to-gate approach. The data for each processing process was analyzed with SimaPro 9.0 software. The three biggest contributions of the LCA analysis on the sewage treatment process are non-renewable energy, global warming, and respiratory inorganics. The recommended alternative improvement programs are the application of green buildings in the area around the processing plant, the use of inverters to save electricity, and regular monitoring of cleaning or updating of the processing unit.
Numerical Study of Unsteady Blood Flow in The Carotid Stenosis Model
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2759

Abstract

A numerical study has been carried out to analyze the unsteady behavior of velocity distribution and wall shear stress in the stenotic artery using computational fluid dynamics. The 2D channel geometry was an idealized geometry model of the internal carotid artery and the stenosis is modeled as an asymmetric square step corresponding to a 25% reduction in the internal carotid artery reduction. The blood flow is considered a Newtonian fluid. The wall of the artery is considered rigid. A uniform flow is assumed in the inlet boundary condition and zero gradient pressure is considered as an outlet boundary condition setup. The recirculation region and low WSS are visible at the post-stenosis location (at x = 0h to x = 10h). Although the velocity profile recovers fully developed at x = 12h to the outlet, the lower WSS is still observed. This numerical result indicates that the presence of stenosis in the internal carotid artery will catalyze the formation of new plaques in the neighborhood area of the post-stenosis location
Social Capital of Local Communities in Improving the Economy Through Utilizing the Potential of Sago in the Peatlands of Meranti Islands Regency
Nusantara Science and Technology Proceedings Multi-Conference Proceeding Series C
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2614

Abstract

Sago plants located in Tanjung Village and Tanjung Darul Tazim Village, Meranti Islands Regency are one of the centers for sago nurseries located in peatland areas that have the potential to cause land fires. Therefore, this study aims to determine the social capital of local communities in improving the economy through the use of sago plants and how to restore peatlands. Data collection methods used are question and answer, observation, and documentation. The targets of this question-and-answer activity are District Officials, Village Officials, Sago Farmers, Sago Business Actors, Local Community Leaders, and other related parties. The results of this study indicate that sago is proven to be able to improve the family's economy, especially for the local community. The income from sago provides income for the community, both from their plantations and from those who work for other parties. Benefits in the economic field turned out to support the formation of benefits in the social field, namely producing a surau. Also useful in the field of education, namely producing the Al-Manar Education Foundation and increasing their children's education to graduate degrees. Extensive plantations, supportive soil, and good maintenance are the factors that make the Meranti Islands one of the largest sago-producing areas. The way the community restores peatlands here, namely by building canals (tits) around sago plantations, has been praised by President Joko Widodo.
A Dramatic Fall: Critical Discourse Analysis of Boris Johnson’s Resignation Speech
Nusantara Science and Technology Proceedings Multi-Conference Proceeding Series C
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2615

Abstract

This study aimed to dissect the image formed by Boris Johnson in his resignation speech as British Prime Minister. A qualitative descriptive method was used in this study with Critical Discourse Analysis by Norman Fairclough. Analysis at the micro level using transitivity suggested that Boris Johnson mostly used mental processes, especially in the process of desirability. The data found that there were 11 uses of modality such as 'should', 'will', and 'can'. This data mostly showed the probability that the former prime minister suggested when dealing with the future programs that would be conducted without his concern any longer. Among 73 data points of pronouns, the pronoun 'I' dominated the content of the speech, followed by the pronouns' we' and 'our', which had 12 data points each. The pronoun 'I' indicated the unmarked theme (subject/theme) in a declarative clause to only concern the former prime minister himself. Socially, situationally, and institutionally, it can be seen that Boris Johnson received pressure to step down from his position. Based on the discussion, it can be concluded that Boris Johnson wanted to build an image that he was a successful leader and still willing to contribute even after he was no longer in office. Further research could be carried out, especially in terms of research on the resignation speeches of world leaders.
Effectiveness of Waste Shrimp Shell as Chitosan Polymer Medium (CPM) Mask In Reducing Cigarette Smoke
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2760

Abstract

Shrimp shell waste contains chitin which is considered potential as a mask coating material to remove toxic substances in cigarette smoke. The masks were made using Chitosan Polymer Medium (CPM) with the spray coating method. Therefore, this study aims to determine the optimal concentration of reducing nicotine, constant, and reduced capacity of Chitosan Polymer Medium (CPM). The variations used were the type of CPM, the total spraying was 3 sprays, 5 sprays, and 7 sprays, and the concentration of CPM was 10,000 ppm, 20,000 ppm, 30,000 ppm, 40,000 ppm, and 50,000 ppm. The best result is the nicotine removal percentage is 99.98%, and the adsorption capacity is 7,0376 mg/g. The results showed that shrimp shell CPM was effective as an adsorbent in the adsorption process to remove nicotine in cigarette smoke.
Antibacterial Activity of Jambi Forest Honey on Cariogenic Bacteria Lactobacillus acidophilus
Nusantara Science and Technology Proceedings 4th Riau Medical Scientific and Expo 2022
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2801

Abstract

Caries is a major dental and oral health problem in Indonesia because of their high prevalence. Based on the 2018 Basic Health Research in Indonesia, the prevalence of caries in Indonesia is 88.8%. Dental caries is a local destructive on dental hard tissue caused by the presence of acids produced from bacterial metabolism in dental plaque. The use of mouthwash has an important role in maintaining dental and oral hygiene, especially in reducing bacteria in plaque. A study showed that gargling with honey can reduce plaque scores in the oral cavity. This study aims to determine the antimicrobial effect of Jambi forest honey on cariogenic bacteria. The caries-causing bacteria used in this study was Lactobacillus acidophilus. This research is an in vitro experimental study using the disk diffusion method to obtain the effectivity of Jambi forest honey to inhibit cariogenic bacteria. The inhibition of Jambi forest honey will be compared with antiseptic mouthwash containing 0.2% Chlorhexidine gluconate, antiseptic mouthwash containing 21.6% alcohol, branded honey, and control. In this study, all of the agar media was repeated 6 times in each treatment group. The analysis was carried out using the one-way ANOVA test to see the comparison of inhibition in these five treatment groups. In Lactobacilus acidophilus, Jambi forest honey was effective as an antimicrobial compared to control, branded honey, and mouthwash containing alcohol with p-values respectively 0.002; 0.007, and 0.0003. Based on the results of this study, Jambi forest honey was effective to inhibit the growth of cariogenic bacteria Lactobacilus acidophilus.
Effect of Bortezomib on hs-CRP Concentration in the Progression Stage of Atherosclerotic Rats
Nusantara Science and Technology Proceedings 4th Riau Medical Scientific and Expo 2022
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2802

Abstract

The mechanism of anti-atherosclerosis of bortezomib is thought to be through its anti-inflammatory. High-sensitivity C-Reactive Protein (hs-CRP) is an inflammation marker and an independent risk factor for atherosclerosis. This study aimed to analyze the effect of bortezomib on serum hs-CRP concentration in the progression stage of atherosclerotic rats. This study was an experimental study with a post-test only with a control design. This study used 15 male Wistar rats divided into three groups; group I was only given standard feed, group II was induced by vitamin D3 and an atherogenic diet, and group III was induced by vitamin D3 and given an atherogenic diet and bortezomib. Bortezomib 50 g/kg BW/day was administered on the first and third days. Serum hs-CRP concentration was measured using the ELISA technique. Statistical analyses to compare serum hs-CRP concentrations between groups were done using the ANOVA test followed by a post-hoc LSD test; p < 0.05 was considered statistically significant. The results showed that the induction of atherosclerosis resulted in 100% of atherosclerotic lesions in the progression stage. The highest hs-CRP concentration was found in group II (an average of 66.84 ng/mL) , followed by groups I (an average of 59.32 ng/mL) and III ( an average 49.43 ng/mL). The hs-CRP concentration in group III was significantly lower than in group II. It can be concluded that the administration of bortezomib could reduce hs-CRP concentration in the progression stage of atherosclerotic rats.
Susceptibility to Malathion of Aedes aegypti Mosquito Population from Tangkerang Barat, Marpoyan Damai Distric
Nusantara Science and Technology Proceedings 4th Riau Medical Scientific and Expo 2022
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2803

Abstract

The use of chemical insecticides to control Aedes aegypti (Ae. aegypti) mosquitoes, as the main vector of dengue hemorrhagic fever (DHF), has long been used. Malathion is an organophosphate insecticide that is commonly used to control mosquitoes. Monitoring of insecticide resistance is an important part of entomological surveillance. This study aimed to determine the susceptibility status of Ae. aegypti to 5% malathion in Tangkerang Barat Sub District, Marpoyan Damai District. This study was conducted in August - October 2022. This study was a descriptive study with a cross-sectional design. Samples of adult mosquitoes (F1) that came from larvae were collected from 100 houses in Tangkerang Barat according by Health Ministry for susceptibility tests and reared at the Parasitology Laboratory of the Faculty of Medicine until adult mosqitoes. The experiment was carried out using 5% malathion-impregnated paper according to the protocol of the WHO bioassay test. Twenty-five of adult mosquitoes were exposed to 5% malathion-impregnated paper in each of 4 exposure tubes and 2 control tubes for 1 hour then moved to hold tube and maintained for 24 hours The mortality of Ae. aegypti after 24 hours were 100%. The susceptibility status of Ae. aegypti mosquitoes to 5% malathion in Tangkerang Barat was susceptible. Malathion can be used against adult Ae.aegypti mosquitoes in Tangkerang Barat but still need to rotate the insecticide. The use of efficacious and safe insecticides against Ae.aegypti is one of the most effective ways to interrupt the transmission of DHF. Rotating the insecticide class is important to continue vector control.
Self-Blame and Tension Reduction: Self-Criticism Stability Study on The Students
Nusantara Science and Technology Proceedings 4th Riau Medical Scientific and Expo 2022
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2804

Abstract

Anxiety and stress are still a massive conversation on the academic scope. One of the factors in it is self-criticism. The main effort to control it is done by coping with stress. There are two types of stress coping used by students, namely self-blame and tension reduction. However, the influence and relationship between both are still debated clinically and psychologically. The purpose of this study was to determine how the influence of self-blame and tension reduction clinically and psychologically on students' self-criticism. We invited 304 students in Makassar (P=231, L=73). Data were collected using the self-criticism scale and The Ways of Coping (Revised) scale and analyzed using multiple regression techniques. The results of the study found that simultaneously self-blame and tension reduction affected the stability of students' self-criticism (p < 0.05). From this, we know that self-blame and tension reduction as stress-coping techniques have a greater effect when used together. These results give rise to a new schema for the stability of self-criticism and mental health. In the future, we suggest an in-depth review of the forms of negative associations of the tension reduction type in Indonesian students.
Overview of the Knowledge of Mothers of Toddlers Who Visit Posyandu Melayu Besar, Rokan Hilir District
Nusantara Science and Technology Proceedings 4th Riau Medical Scientific and Expo 2022
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2805

Abstract

Integrated Healthcare Center (Poyandu) ia a community activity for health services. Every month, mothers who have children under five years old (toddler) should participate in posyandu for their children’s growth and development monitoring. The target of weighing toddler to Posyandu in Indonesia is 85%, while the coverage of toddler weighing in Posyandu Melayu Besar is still below the target. Several impacts like not well educated, toddler would not receive Vitamin A, toddler mother would not understand about growth and development of the toddler would be happen if toddler mother not active bring their toddler to posyandu. Good knowledge about posyandu is needed by every mother who has children under five. Good knowledge will motivate mother for visit to posyandu. This research aimed to describe mother’s knowledge about posyandu. This cross-sectional research was conducted from August to October 2022 in Melayu Besar village, Rokan Hilir, Riau Province. Fifty-five mothers with children 1 – 5 years old were recruited for this study by accidental sampling technique. The data was collected by using questionnaire. This results showed that 60% of participants have good knowledge of posyandu, while the rest have poor knowledge. Mothers with good knowledge were more likely to attend the posyandu every month. Hopefully, the education from health workers will increase motivation of mothers to attend the posyandu. The more often someone gets information through counseling or mass media, then someone’s knowledge will increase.

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