The Use of Temperature and Waste Diapers in the Demulsification Process of Crude Oil Samples

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Currently, the oil wells in Indonesia are getting older, the older the oil well shows the greater the water content, which will cause the formation of a water-in-oil emulsion. The presence of emulsion that occurs in crude oil will cause a decrease in oil quality and oil production. Therefore, a demulsifier is needed to overcome these problems. Because the existing demulsifier are still very few variants and are not environmentally friendly, a new type of demulsifier that is environmentally friendly is needed. Baby diapers can be used as a new type of demulsifier because baby diapers contain Polymer Superasorbent (SAP) which can absorb 200 times water [1]. Superabsorbent Polymer has inert and hydrophilic properties with the working principle of absorbing and trapping water in the emulsion formed on crude oil. In this experiment, the author uses baby diaper waste to separate water and oil in the emulsion formed on the P#441 crude oil sample at a temperature of 26.70C, 400C, and 500C with a centrifuge with a speed of 500, 1000, and 1500. RPM in 1, 2, and 3 minutes. Demulsification process occurs faster in crude oil sample at a temperature of 500C because of high temperatures can accelerate the process demulsification. The use of baby diapers as nashi demulsifier is in its early stages and can be developed further, but it has been proven to accelerate the demulsification process in the emulsion formed by sample P#441.

The Analysis of the “Buy Now, Pay Later” Use Intention in Indonesia

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The Rapid technological and informational advancements have an effect on the financial industries. One of its offerings is financial technology, sometimes known as fintech. In 2018, a number of fintech startups introduced products that enable clients to make installment payments without credit cards. This is referred to as Buy Now, Pay Later (BNPL). Then, numerous technology firms, such as Traveloka, Shopee, and Gojek, embrace this approach to round out their payment alternatives. The market for BNPL in Indonesia is quite promising. Demand for BNPL is quite high, as seen by the rapid expansion of BNPL providers in Indonesia. Many companies, including Traveloka, Gojek, Shopee, and others, demonstrated a rise in BNPL product usage. Using the Technology Readiness and Acceptance Model, this study examines the Buy Now, Pay Later usage intent (TRAM). This study concludes that technology readiness, perceived usefulness, and perceived simplicity of use influence the intention to use a BNPL product, with perceived usefulness having the most direct impact on users’ intentions.

Analysis of Chloramphenicol in Shrimp Using Standard Addition Method Based on Diazotization

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This research aimed to determine the concentration of chloramphenicol in shrimp using the standard addition method based on the diazotization reaction using Zn powder as a reducing agent of chloramphenicol, followed by the use of N-(1-naphthyl) ethylenediamine dihydrochloride as a coupling agent and measured at 565 nm. Based on the test, the shrimp sample was found to contain 1964.91 mg/kg of chloramphenicol and it exceeded the requirements set by the European Commission which was 0,15 mg/kg. The limit of detection (LOD) value is 0.19 mg/mL and the limit of quantitation (LOQ) value is 0.64 mg/mL. The correlation coefficient (R2) was 0.9991 for the concentration range of 0-50 ppm. The analysis of the results showed that the %recovery in shrimp analysis using this method was 87.41%-107.73% with an average of 109.38%.

Integrated Industrial Marketing Strategy in Social Media to Increase Electrical Products Awareness for PT Unindo Hi-tech Pratama

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In this era of information, it requires everyone to have a marketing knowledge. Marketing knowledge can be implemented for every businesses in all over the world. In B2B business, there is a term of industrial marketing strategy which is a similar marketing strategy, but can be implemented for a long-term relationship with the customers. PT. Unindo Hi-tech Pratama is one of Hiwin distributor in Indonesia which provide mechanical and electrical spare parts for industrial automation needs. The purpose of this study is to find out the reasons for the lack of awareness of the Hiwin electrical products in PT. Unindo Hi-tech Pratama. The research method uses qualitative methods. Qualitative methods are used to obtain primary data and make observations from interviews with owners, employees, and customers. The collected data is then used to create internal and external analysis. Internal analysis is used to gather information about PT. Unindo Hi-tech Pratama internal conditions with VRIO analysis and marketing mix, while external analysis is used to evaluate the industry environment as well as define the behaviour of customers of the company. Furthermore, after external and internal analysis was conducted, the researchers used root cause and produced the cause of the problem on the lack of effective promotions and limited resources in raising awareness of Hiwin electrical products. Based on the analysis, researchers presented a new industrial marketing strategy by maximizing digital marketing and improve marketing division management in order to increase awareness of Hiwin electrical products.

“Sulaman Rindu” by Achmad Nasihi MT: Psychopoetry/Poetry Therapy in the Shade of Sufism

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Psychopoetry is a class with other therapies through the arts, which psychiatrists can use to heal the soul. The purpose of this study was to examine the poetry anthology “Sulaman Rindu” through a psychopoetry approach. In this study, the researcher used a descriptive analysis method in the form of factual data collection contained in the poetry anthology “Sulaman Rindu” by Achmad Nasihi MT. The results of the analysis show that the poetry anthology “Sulaman Rindu” can be used as psychotherapy poetry. Reading Sufistic poems, it is as if we are humming love to God in transcendental charm.

Analysis of Correlation between Hyper-Uricemia and Renal Resistivity Index in Normoglycemic Normotensive Patients

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Introduction: Hyperuricemia is associated strongly with the development of renal disease and progression. Medical therapy decreases serum uric acid levels by inhibiting the enzyme xanthine oxidase.

Objective of the study: To evaluate correlation of mean uric acid level and Renal Resistive Index in normoglycemic and normotensive adult subjects.

Material and methods: This descriptive cross-sectional study was conducted in THQ Hospital Fort Abbas during 31-10-2018 to 30-04-2019. One hundred (n=100) non-diabetic, non-hypertensive, recently diagnosed hyperuricemic otherwise healthy subjects irrespective of gender between age 20-40 years were included in the study.  After complete history taking and full physical examination laboratory testing including: serum uric acid, serum creatinine to exclude renal decompensation patients, fasting blood sugar and 2 h post prandial were advised.

Results: 55.0% (n=55) of patients were males with the mean age of 33.40 years ± 3.85 SD and 45.0% (n=45) of patients were females with mean age of 34.67 years ± 3.33 SD. Cumulative mean age was 33.97 years ± 3.66 SD. The mean value of the RI of the renal arterial vasculature was 0.765 ± 0.0155 SD. The maximum, minimum and range values of the RI were 0.79, 0.74, and 0.04 respectively. The mean serum uric acid value found to be 10.947±0.562 SD. The maximum, minimum and range values of the RI were 0.79, 0.74 and 0.05 respectively. Correlation between the serum uric acid and renal arterial RI prior to the medical therapy and 3 weeks after therapy. A positive correlation was found between both values with a Pearson’s correlation coefficient = 0.103 and p-value 0.308.

Conclusions: It is concluded that that medical treatment of hyperuricemia results in lowering of serum uric acid which correlates with the decrease in renal resistive index.

Avoiding Ambiguous Framework in Distance-based Formation Control Using Virtual Followers

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In this study, we develop a shape formation controller based on regular distance-based control law. As distance rigidity theory may not be successful in achieving desired shape when the control system defined under minimally rigid graph. As a matter of fact, the formation may converge to ambiguous framework when the group of mobile robots did not initialize in proper way. This is a well-known issue with distance-based formation control while there are multiple equilibrium points in the dynamics. We introduce a new controller by adding virtual constraints to the system. The performance of control system is exemplified through numerical simulations and the convergence to the desired formation for all initial conditions validated with stability analysis.

Synthesis and Characterization of Hydroxyapatite Gel – Nanosilver – Clove Flower Extract (Syzygium Aromaticum L.) as a Toothpaste Forming Gel

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Dental caries is a disease caused by the bacteria Streptococcus mutans and Lactobacillus, and affects everyone regardless of age. One way to overcome dental caries is to clean the teeth with a toothpaste made from hydroxyapatite-nano silver-clove extract. Hydroxyapatite is a biomaterial that has biocompatibility, bioactivity, and osteoconductive so that it can remineralize teeth. Nano silver is an antibacterial component that is able to kill microorganisms that cause dental caries. The addition of clove extract as an antimicrobial and aromatic compound can increase the attractiveness of the product. This study aims to determine the physical and chemical characteristics of the hydroxyapatite-nano silver-clove extract gel formulation with varying concentrations of hydroxyapatite 1%, 2%, and 3%, and nano silver concentrations of 1 ppm, 5 ppm, and 10 ppm. The results of the homogeneity test, pH level, dispersion, and adhesion showed that the gel was in accordance with the test standard. The results of organoleptic tests and statistical analysis showed that variations in the concentration of hydroxyapatite and nano silver affected the color and aroma (P < 0.05), but did not affect the texture (P > 0.05) of the gel. FTIR spectrophotometric analysis showed that the formulation already contained OH, CO32-, PO43- groups derived from hydroxyapatite, C=O derived from nano silver, and OCH, CH3, C-C, =C-H derived from clove extract.

User Experience of Online Examinations and Proctoring: A Case Based Study

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University curriculum all over the world contain a set of learning outcomes to be achieved through different learning and teaching modes. The achievement of the Learning Outcomes is measured using some form of assessment, usually in the form of University examinations. The traditional teaching has been face-to- face, and therefore many examinations have also been conducted in a face to face manner. One of the challenges of any examination setting is cheating amongst University students, which implies that the examinations must be properly invigilated or proctored. Since the introduction of ICT in Education, there have been attempts to introduce Online examinations, although these are yet to gain full traction. In Kenya, the ODEL standards lean more towards blended learning, where each course has to have a face to face element. Many Universities have therefore been conducting their examinations in a traditional setting. The onset of COVID-19 created a different situation as the social distancing and the restricted movement meant that learners could not attend a physical class. The movement to Remote Emergency Teaching created a challenge on how examinations could be conducted and proctored. Several Universities decided to do the teaching but wait for resumption of face to face studies to conduct their exams, and this had a negative impact on the University Almanac. This paper looks at the case of one Private University that decided to complete a whole semester online but also went on to conduct examinations via the Learning Management System. Using a triangulation of Interviews, Observation and Document Reviews, staff and students who had participated in conducting and taking online examinations were interviewed. The online examinations processed was observed and documents and software used in online examinations and proctoring were reviewed. Reorganization of the examination processes, organizational and cultural change management, ICT technical issues, extensive training, software selection and communication were identified as the key requirements for successful online examinations and proctoring to take place. The use of Proctoring Systems that are integrated with the LMS give a shorter learning curve and are easier to learn and use.

The Spatial Relationship between Drug Abuse and Home Burglaries: Northeast District of Penang

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This study to identify the relationship between dependent and independent variables as well as the spatial correlation between drug abuse cases and home burglary cases in Northeast District of Penang. The OLS regression was used to examine the relationship between the home burglary cases and drug abuse as well as the spatial correlation of drug abuse and home burglary cases based on Moran’s I. The increase of home burglary cases was proportional to the increase the number of cases in local drug abuse. In spatial context, the drug abuse and home burglary cases showed a positive correlation. Plus, this indicated that the spatial relationship between the two cases were proportional. The use of GIS application helps the authorities such as AADK, PDRM and local authorities to understand crime and drug abuse in time-space context. The space elements emphasized the issues related to drug and crimes, and assisting relevant authorities in strategy planning to reduce crime index and drug problems. GIS is used to conduct research on locations or spaces and new approaches to assist authorities in making decisions and strategies related to crime and drugs.