USU-IR Repositori Institusi Universitas Sumatera Utara
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Prebiotic Potential of Maltooligosaccharides from Orange Sweet Potato Beta 1 Variety
No full textThis study was aimed to evaluate the in vitro prebiotic potential and analyze the growth trends of lactic acid bacteria from orange sweet potato maltooligosaccharides. This research used a non-factorial Completely Randomized Design (CRD) method, consisting of different concentrations of orange sweet potato maltooligosaccharides (0%, 0.5%, 1.0%, 1.5%, 2.0%, and 2.5%) added to MRSB medium and inoculated with lactic acid bacteria. The tested bacteria were Lactobacillus casei and Bifidobacterium bifidum. The growth was monitored based on total lactic acid bacteria and Optical Density (OD) at 0, 12, 24, 30, and 36 hours of incubation.
The results showed that the concentration of orange sweet potato maltooligosaccharides had a highly significant effect (P0.05). The growth of lactic acid bacteria increased until 24 hours of incubation, followed by a decline, reaching the lowest point thereafter. Overall, Bifidobacterium bifidum exhibited faster and more abundant growth compared to Lactobacillus casei during the incubation period.117 PagesSkripsi Sarjan
Cardioprotective Effects of Etanol Extract of Attarasa Leaves (Litsea cubeba (Lours.) Pers.) in Isoproterenol-Induced Rats
No full textBackground: Cardiovascular disease is the leading cause of death globally, with myocardial infarction as its major complication. Myocardial infarction occurs due to heart muscle damage triggered by ischemia and oxidative stress caused by isoproterenol. The attarasa plant (Litsea cubeba) is rich in bioactive compounds with antioxidant potential, offering cardioprotective effects against oxidative stress.
Objective: This study aimed to determine the effects of ethanol extract of attarasa leaves (EEDA) on blood pressure, total protein levels, and malondialdehyde levels in isoproterenol induced male rats.
Methods: Fifteen male Wistar rats were divided into three groups: normal, isoproterenol-induced, and EEDA 200 mg/kgBW. Treatment lasted 15 days, with blood pressure measured on day 0, 16, and 18. On day 18, rats were anesthetized using ketamine-xylazine/tiletamine (2 mL/kgBW), and heart tissues were analyzed for total protein (lowry method) and malondialdehyde levels (thiobarbituric acid reactive substances method).
Results: The blood pressure of the whole group was within the normal range, but EEDA did not show any blood pressure lowering effect on isoproterenol-induced rats. In total protein levels, there was a significant difference between the isoproterenol group and the EEDA 200 mg/kgBW group. It was found that the levels of malondialdehyde dropped significantly between the isoproterenol group and the EEDA 200 mg/kgBW group.125 PagesSkripsi Sarjan
Analysis of Bearing Capacity and Lateral Deflection of 0,6 M Diameter Hydraulic Jacked-in Pile with Lateral Static Loading Test and Finite Element Method on Tower-1 Inpatient Building Project of RS Haji Medan
No full textThe lateral bearing capacity of the pile becomes very important when the structure receives lateral loads, for that high-rise structures, long-span bridges, and seaside structures, which are very common in North Sumatra, certainly require pile foundations that can receive lateral loads. This study aims to analyze the lateral bearing capacity of hydraulic jacked-in piles with empirical analysis using the Broms method and based on the interpretation of the results of lateral static load tests using the Chin method, Davisson method and Mazurkiewicz method. In this study, a numerical analysis of the lateral deflection of the pile was also carried out using the p-y method with the LPile program and using the finite element method with the PLAXIS 3D program to see the level of conformity with the deflection results of the lateral loading test in the field. Based on the analysis that has been done, the lateral bearing capacity of the hydraulic jacked-in pile using the Broms method is 16.20 tons, for the Chin method it is 18.76 tons, the Davisson method is 13.22 mm and the Mazurkiewich method is 16.50 tons. The amount of lateral deflection from the results of the lateral loading test in the field for a load of 200% is 11.82 mm. Meanwhile, the deflection result with LPile program is 14.54 mm and the deflection result with PLAXIS 3D software for Mohr-Coulomb model is 12.18 mm and for HS Small model is 11.86 mm. It turns out that HS Small model is the one that gives the closest result to lateral loading test result in the field.158 PagesTesis Magiste
Analysis of Calistung Learning Program on Children's Literacy Needs at Rumah Literasi Ranggi Kec. Percut Sei Tuan Deli Serdang
No full textChildren living in economically disadvantaged conditions often face significant challenges in mastering basic literacy and numeracy skills (reading, writing, and arithmetic—commonly referred to as “Calistung” in Indonesia). One of the main contributing factors to this issue is limited access to quality education. Schools in underprivileged areas typically lack adequate educational facilities, qualified teachers, and sufficient learning materials. This research was conducted at Rumah Literasi Ranggi, located at Jalan PWI Blok A No. 59, Sampali Village, Percut Sei Tuan Subdistrict, Deli Serdang Regency. The primary informants in this study were two children participating in the Calistung learning program at Rumah Literasi Ranggi. Additional informants included the parents of these children, while key informants consisted of the founder of Rumah Literasi Ranggi and one teaching staff member. Data collection was carried out through both literature review and field studies, which involved direct observation, in-depth interviews, and documentation. The data obtained were then analyzed qualitatively by the researcher to gain a comprehensive understanding before drawing conclusions from the findings. The results of the study indicate that the Calistung learning program implemented at Rumah Literasi Ranggi has had a positive impact on improving children’s basic skills in reading, writing, and arithmetic. These three competencies serve as an essential foundation for a child’s overall learning process. The positive outcomes of the program can be assessed using literacy indicators from the National Institute for Literacy, which include the ability to read, write, speak, calculate, and solve everyday problems. This program has brought about meaningful change for children from economically disadvantaged families who participate in the learning activities at Rumah Literasi Ranggi.138 PagesSkripsi Sarjan
Analysis of the Influence of Digital Marketing and Brand Awareness on Purchasing Decisions on the "Seindo Travel" Application
No full textDigital marketing is aimed at increasing brand awareness of the "Seindo Travel"
application, but this has no impact on increasing brand awareness of the "Seindo Travel"
application among users or consumers. The aim of this research is to: 1) Analyze the
influence of digital marketing on purchasing decisions for the Seindo Travel application.
2) Analyze the influence of brand awareness on purchasing decisions for the Seindo Travel
application. 3) Analyze the influence of digital marketing and brand marketing to attract
people's buying interest in Seindo Travel products and 4) Analyze the level of public
awareness of the existence of Seindo Travel products at this time. Research was conducted
at Seindo Travel, located in Medan City, North Sumatra regarding the Role of Digital
Marketing and Brand Marketing on Purchasing Decisions on the "Seindo Travel"
Application. The analytical method used in this research is multiple regression analysis
with a total of 150 respondents. The research results showed that digital marketing had an
influence on purchasing decisions for the Seindo Travel application with a regression
coefficient value of 0.476. These results show that digital marketing plays a role in people's
decisions to buy the Seindo Travel application. Brand awareness influences purchasing
decisions for the Seindo Travel application with a regression coefficient value of 0.395.
These results show that brand awareness plays a role in people's decisions to buy the
Seindo Travel application. Digital marketing and brand marketing have an influence on
attracting people's buying interest in Seindo Travel products with a significant value of
0.000. The level of public awareness of the existence of Seindo Travel products is still at
37.8% so efforts are needed to increase public awareness of the existence of Seindo Travel
products86 PagesTesis Magiste
Review of State Administrative Law on the Authority of the Regional Inspectorate in Conducting Supervision of Regional Government Administration (Study at The Inspectorate of Deli Serdang District)
No full textTo achieve good governance, it is necessary to establish a supervisory institution that oversees the implementation of government in the regions based on the principle of autonomy. The regional inspectorate, as an internal government supervisory institution, oversees the implementation of regional government and is accountable to the regional head through the regional secretary. The continuing occurrence of corruption cases involving regional heads raises questions about the authority of the regional inspectorate in conducting oversight. Based on this background, the problem formulations of this research are: How is the authority of the regional inspectorate regulated in overseeing the implementation of regional government? What is the mechanism for overseeing the implementation of regional government by the Deli Serdang Regency Inspectorate? What are the obstacles faced by the Deli Serdang Regency Inspectorate in overseeing the implementation of regional government? This research uses a normative juridical method with a statute approach, a conceptual approach, and a case approach. The research data uses secondary data supported by primary data through interviews with sources. Data was collected using literature study and interviews. Data analysis was carried out using qualitative analysis methods. The research results show that the authority of the regional inspectorate as a supervisory element of regional government administration is in accordance with the provisions of the legislation. Supervision is carried out in the form of audits, reviews, evaluations, monitoring, and other supervisory activities starting from the planning, implementation of supervision, and reporting of supervision results. The obstacles to supervision are the lack of human resources in carrying out supervision; lack of employee competence in carrying out supervision; and limited budget to support the implementation of supervision. Efforts to overcome these obstacles are by increasing the number of human resources/supervisory personnel in accordance with organizational needs; improving employee competence; and, increasing the budget to support the operational implementation of supervision.133 pagesSkripsi Sarjan
The Effect of Service Quality and Institutional Image on Student Loyalty through Satisfaction as Intervening Variables at Battuta University
No full textUniversities play an important role as the main pillar in driving national transformation, both in terms of economy, social, and culture. In the era of globalization and revolution 4.0, the role of universities is becoming increasingly crucial in preparing the next generation to be competitive and innovative. The current phenomenon is that universities, especially private universities whose main source of funding comes from students, are experiencing problems with low levels of student loyalty. Several experts argue that student loyalty is greatly influenced by the level of student satisfaction which is factored by the quality of service and the image of the university itself. The purpose of this study is to determine and analyze the effect of service quality and institutional image on student loyalty at Battuta University through satisfaction. This type of research is associative research and the data used is quantitative data. The population of this study was all students of Battuta University, totaling 701 students. The technique for determining the number of samples used the Slovin formula so that a sample size of 258 students was obtained. The data analysis used is Partial Least Square Structural Equation Modeling. The results of the study directly show that service quality has a positive and significant effect on satisfaction, institutional image has a positive and significant effect on satisfaction, service quality has a positive and significant effect on student loyalty, institutional image has a positive and significant effect on student loyalty, and satisfaction has a positive and significant effect on student loyalty. Indirectly, service quality has a positive and significant effect on student loyalty through satisfaction, as well as institutional image has a positive and significant effect on student loyalty through satisfaction.176 PagesTesis Magiste
Relationship Between Self Efficacy and Family Support With the Quality of Life of Diabetes Mellitus Patients in Medan City in 2025
No full textThe prevalence of diabetes mellitus in Indonesia increased from 10.9% in 2018 to 11.7% in 2023. Controlling this disease to prevent complications can be achieved by enhancing self-efficacy and family support, both of which play a crucial role in the quality of life of diabetes patients. This study aims to analyze the infuence of self-efficacy and family support on the quality af life of diabetes mellitus patients. A cross-sectional research design was employed, involving 263 diabetes mellitus patients in Medan City, selected using accidental sampling. The research instrument was a questionnaire. Bivariate data analysis was conducted using the chi-square test, while multivariate analysis was performed using muitiple logistic regression. The results indicate that self-efficacy (p-value <0.001) and family support (p-value <0.001) significantly influence the quality of life of diabetes mellitus patients. The most dominant factor afecting the quality of life of type 2 diabetes mellitus patients was family support, with an Exp(B) value of 30.018. This means that patients with poor family support have a 30 times higher risk of experiencing a lower quality of life compared those with good family support. In conclusion, patients with low self-efficacy and inadequate family support have a 97.6% likelihood of experiencing a poor quality of life. It is recommended that families provide support to diabetes patients managing their condition, while patients should maintain self-efficacy to ensure a better quality of life119 PagesTesis Magiste
Relationship Between Glasglow Coma Scale (GCS) And Intracerebral Hemorrrhage Volume On Non-Contrast CT Scan Examination At H.Adam Malik General Hospital
No full textBackground: Stroke is a disease condition caused by the cessation of blood flow to the brain due to blockage or rupture of blood vessels. The Glasgow Coma Scale (GCS) score is an accurate standard neurological assessment method and is a predictor of acute intracerebral hemorrhage (ICH). Early diagnosis of ICH hemorrhage and identifying the etiology of ICH are very important. The most common neuroimaging modalities in acute conditions are non-contrast computer tomography (NCCT) and CT angiography (CTA).
Objective: To analyze the relationship between the GCS and the volume of intracerebral hemorrhage on non-contrast CT scans.
Methods: This study is an observational analytical study with a cross-sectional design conducted at the Haji Adam Malik General Hospital, Medan from September 2024 to March 2025.
Results: The average GCS score was 13.03 + 2.371. Most patients with a good GCS score category were 20 people (66.7%) followed by a moderate category of 6 people (20.0%) and a poor category of 4 people (13.3%). If divided based on the location of bleeding, the average GCS in the lobar location was 12.42 + 3.059 and the average GCS in the non-lobar location was 13.44 + 1.756. The average volume of intracerebral hemorrhage in the study sample was 26.92 + 40.695 ml.
Conclusion: There is a very strong negative correlation between the ADC value on MRI examination of the head with contrast and the consistency of meningioma based on histopathology at Adam Malik Hospital.
Keywords: CT scan, Intracerebral hemorrhage, Glasgow Coma Scale, Stroke114 PagesTesis Magiste
Design And Construction Of A Steam Power Plant Fueled By Oil Palm Fronds Using A Pelton Turbine (Case Study In Huta Padang Village Asahan Regency)
No full textIndonesia has significant potential for renewable energy resources, one of which comes from waste. Indonesia has a biomass waste potential of 885.2 million Gigajoules (GJ) per year. This opens up opportunities for utilizing biomass, such as oil palm waste, as an energy source. Huta Padang, located in Bandar Pasir Mandoge Subdistrict, Asahan Regency, North Sumatra, is predominantly filled with oil palm plantations, which produce oil palm frond waste daily. This study aims to utilize the oil palm frond waste generated daily by the community by designing a boiler to generate electricity through the heat produced by burning the oil palm frond waste, specifically a steam power plant with a Pelton turbine. This system will generate electrical energy from a DC generator driven by a turbine powered by steam produced by a boiler that is fueled by palm frond waste. The testing will be conducted three times for each specified condition. Based on the test results with a load variation of 1 lamp of 30 watts, the obtained mean value of the data showed a generator speed of 1445,8 RPM, voltage of 15,71 V, current of 1,14 A, and the highest power of 18,1 W at a pressure of 7 bar. Meanwhile, with a load variation of 2 lamps of 30 watts, the generator speed was 1238,9 RPM, voltage was 12,04 V, current was 1,03 A, and the power output was 12,4 W at a pressure of 7 bar.116 PagesSkripsi Sarjan