Jurnal Universitas PGRI Banyuwangi
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OPTIMIZATION OF VALUABLE MINERALS (MG2+ & K⁺) RECOVERY FROM SEAWATER USING RESPONSE SURFACE METHODOLOGY (RSM)
No full textThe extraction of metallic ions from seawater brine within a circular economy framework presents economic promise yet is hampered by concomitant ionic interference manifested during the precipitation of salts. The present investigation sought to characterize and subsequently to refine the co-precipitation steps for magnesium and potassium ions such that they yield suitable precursors for the synthesis of struvite fertilizer. The experimental work utilized a Response Surface Methodology built upon a Face-Centered Central Composite Design, interrogating the influence of the molar ratio of sodium hydrogen phosphate to calcium chloride and the duration of reaction on the simultaneous recovery of Mg²⁺ and K⁺. Results from the Analysis of Variance demonstrated that the principal effects of the aforementioned ratio, reaction duration, and their interaction terms were statistically significant for both target recoveries. By iterative optimization, the experimental framework predicted optimal operational parameters of sodium hydrogen phosphate to calcium chloride ratio of 0.401 and a reaction interval of 11.608 minutes, corresponding to a composite desirability statistic of 0.908 and estimated recoveries of 93.979 % and 97.300 % for magnesium and potassium ions, respectively. The data therefore substantiate the conclusion that Response Surface Methodology provides a systematic and analytically tractable conduit for the resolution of equilibrated brine mixtures, delineating a refined process envelope that promotes the extraction and economic valorization of essential mineral fertilizers from industrial saline streams
The Effect Of Coconut Drain Flour And Black Potato Flour Substitution On Fiber Content And Organoleptics Of Beef Sausage: PENGARUH SUBSTITUSI TEPUNG AMPAS KELAPA DAN TEPUNG KENTANG HITAM TERHADAP KADAR SERAT DAN ORGANOLEPTIK SOSIS DAGING SAPI
No full textSausage is one of the famous processed food products in Indonesia, sausage is obtained from a mixture of ground meat and flour or starch with the addition of spices, food additives that are put into sausage casings. The purpose of this study was to determine the fiber content and organoleptic in beef sausages that have been substituted with coconut pulp flour and black potato flour. The method used is the RAL method while to determine the fiber content in beef sausages using the gravimetric method, also using organoleptic tests with coconut pulp flour and black potato flour formulations. After this test, data analysis was carried out using one-way ANOVA. The results of the study on the effect of coconut pulp flour and black potato flour substitution on the fiber content and organoleptic of beef sausages obtained the highest fiber content at P2, which was 5.78%, while the lowest fiber content was at P0 at 3.67%. organoleptic test results in this study panelists preferred the color of P0 with a value of 3.86, the taste of P1 with a value of 3.5, the aroma of P1 with a value of 3.4, and the texture of P0 with a value of 3.26. which means that the difference in dosage in making sausages has a significant effect on the fiber content and organoleptic of beef sausages
THE EFFECT OF THE SAHABAT KB COMMUNITY-BASED COMMUNITY EDUCATION PROGRAM ON COMMUNITY PARTICIPATION IN KANTAN VILLAGE IN PANDIH BATU DISTRICT: PENGARUH PROGRAM PENDIDIKAN MASYARAKAT BERBASIS KOMUNITAS SAHABAT KB TERHADAP PARTISIPASI MASYARAKAT DI DESA KANTAN DALAM KEC. PANDIH BATU
No full textThe Friends of Family Planning program is designed to increase the participation of Posyandu cadres in supporting family planning (KB) programs through a community-based approach. This study aims to analyze the influence of the program on improving the knowledge, attitudes, and skills of cadres in delivering family planning education. The research uses a quantitative approach with a pretest-posttest design. The sample consisted of 50 Posyandu cadres in Kantan Village who were of productive age (20–45 years), selected using saturated sampling techniques. Data was collected through questionnaires, observations, and documentation, then analyzed using descriptive and inferential statistics. The results showed that the average cadre participation score increased from 2.30 in the pretest to 3.69 in the posttest, with an average difference of 1,386. The Paired Samples Test yielded a t-value of 47.115 with a significance of p = 0.000, which shows a significant difference between the pretest and posttest scores. The Kolmogorov-Smirnov normality test showed normally distributed data (p > 0.05), and the Levene homogeneity test yielded a significant value of 0.228 (p > 0.05), indicating homogeneous variance. These findings prove that the Sahabat KB program is effective in increasing cadre participation, especially through intensive training based on personal and local culture. These results are relevant to Bandura's theory of social learning, which emphasizes the importance of hands-on experience and social support in behavior change. This research also supports previous research that states that community-based approaches with cadre empowerment are more effective than conventional approaches in increasing public awareness and participation in health programs. The Sahabat KB program has the potential to be replicated in other regions by considering the local socio-cultural context. The recommendations of this research include increasing government support in the form of advanced training, cadre incentives, and the integration of digital technology to expand the scope of family planning education. With the empowerment of Posyandu cadres, community-based programs such as Sahabat KB can contribute significantly in supporting the achievement of public health targets
PERAN SANTRIWATI DALAM PENGELOLAAN SAMPAH PERSPEKTIF STRUKTURAL FUNGSIONAL TALCOTT PARSON
No full textThis research aims to analyze the role of female students in waste management based on Talcott Parson's imperatives. This research is empirical juridical research with a juridical approach through legal studies related to the research topic and an empirical approach through sociological facts in the field. This research provides a more comprehensive picture regarding the role of female students in waste management and effective and efficient regulatory strategies in waste management. The results of this research are that the role of female students is carried out by taking concrete actions in minimizing waste, sorting waste, utilizing waste, and understanding materials in waste management in formal institutions and Islamic boarding school environments. Waste management is carried out in line with Talcott Parson’s imperative called AGIL (adaptation, goal attainment, integration and latency) with the existence of waste management activities that are intracurricular, co-curricular and extra-curricular in formal institutions and at the Islamic boarding school level
ETHNOMATHEMATICAL EXPLORATION IN THE ARCHITECTURE OF THE ICONIC BUILDING OF SOPO PARTUNGKOAN CITY OF TARUTUNG: EKSPLORASI ETNOMATEMATIKA PADA ARSITEKTUR BANGUNAN IKONIK SOPO PARTUNGKOAN KOTA TARUTUNG
No full textThe concept of mathematics will always be found in daily life. The concept of mathematics is then associated with a culture, so it is called Ethnomathematics. Ethnomathematics is one of the scientific research methods that connects an ethnicity with mathematical concepts, this research contains an exploration of what mathematical elements are found in the architecture of the iconic building of Sopo Partungkoan Tarututung City. The purpose of this research is to find out the mathematical elements that exist in the architecture of Sopo Partungkoan. This research is a type of descriptive qualitative research that obtains data sources through observations, documentation and interviews related to the Sopo Partungkoan building. This research was carried out at the Sopo Partungkoan Building, Tarutung City in April 2025. The results of this study show that the architecture of the sopo partungkoan building contains a lot of mathematical elements including, Triangle, square, rectangle, parallelogram, circle, coherence and congruence, reflection and fibbonaci concep
STUDENTS’ PERCEPTION OF USING BRITISH COUNCIL LEARN ENGLISH FOR INCREASING VOCABULARY ACQUISITION
No full textBuilding vocabulary is crucial to improving students' language skills, yet many EFL students find it difficult to pick up a wide enough vocabulary using conventional teaching techniques. This study aims to investigate how students view the British Council Learn English platform as a digital resource for vocabulary development. Fifteen Junior high school students who had been active platform users for at least a month participated in semi-structured interviews as part of a qualitative descriptive technique to gather data. Key themes were identified through the use of thematic analysis. According to the results, students thought the platform was helpful, efficient, and interesting for vocabulary development, especially because of its interactive content, contextualized learning resources, and audiovisual elements. Nevertheless, many drawbacks were identified, including the absence of speaking practice and the repetitive nature of the activity formats. These findings imply that although the platform greatly facilitates vocabulary acquisition, more work is required to meet students' more extensive language requirements. To optimize the platform's pedagogical potential and student happiness, educators and developers are advised to incorporate elements that encourage speaking practice, collaborative learning, and content variety. To optimize the platform's pedagogical potential and student happiness, educators and developers are advised to incorporate elements that encourage speaking practice, collaborative learning, and content variet
EFFECTIVENESS OF THE EXPERIENTIAL LEARNING MODEL IN IMPROVING SELF-ESTEEM IN VOCATIONAL HIGH SCHOOL STUDENTS
No full textSelf-esteem is one of the psychological aspects that plays an important role in the development of students, especially in Vocational High Schools (SMK), which require their readiness to face the world of work. However, many students in SMK experience low levels of self-esteem, which has an impact on self-confidence, learning motivation, and the ability to adapt to social and academic environments. This study aims to analyze the effectiveness of the Experiential Learning model in improving self-esteem of students in SMK. This study uses an experimental method with a pretest-posttest control group design. The research sample consisted of SMK students who were divided into an experimental group that received learning with the Experiential Learning model and a control group that used conventional learning methods. The data analysis technique was carried out using statistical tests to see the difference in self-esteem before and after the intervention. Based on the data analysis carried out, the results showed that the Experiential Learning model had a positive effect on improving self-esteem of students in SMK. This is evidenced by the average obtained that the mean pretest score of the experimental group was 8.95 and the control group was 90.70. Furthermore, the posttest results of the experimental group were 103.20 and the control group was 90.50. Based on the average pretest and posttest results, it can be concluded that the experimental group given the Experiential Learning model treatment had an increase in scores, while the control group that was not given treatment did not experience a significant increase
THE ROLE OF DATUK ABDUSSALAM IN THE SPREAD OF ISLAM IN TIMBANG LAWAN VILLAGE, LANGKAT REGENCY IN 1590-1620: Peran Datuk Abdussalam dalam Penyebaran Islam di Desa Timbang Lawan Kabupaten Langkat Tahun 1590-1620
No full textThe spread of Islam in the archipelago took place gradually and involved various important figures, including Sheikh Abdus Salam or Datuk Landak. A cleric from Malaysia who settled in Timbang Lawan Village, Langkat Regency in the 15th century AD. He played an important role in inviting the local community to embrace Islam through a spiritual approach and the Naqshbandiyah order. This study began with the following problems: (1) how did Islam enter Timbang Lawan Village, (2) what was the role of Sheikh Abdussalam in spreading Islam in the area, and (3) what are his legacies and influences on the religious life of the local community. The purpose of this study is to answer the third question through a qualitative descriptive historical and sociological approach. The methods used include observation, interviews, literature studies and documentation of secondary sources in this study including journals and books that support this research. This research is expected to contribute to scientific studies of local Islamic history in Indonesia. The results of the study show that the people of Timbang Lawan Village greatly appreciate the cultural heritage left by Sheikh Abdussalam, such as the tomb of the Sheikh himself. Until now, the local people still greatly appreciate his legacy
COVID-19 AND TOURISM: A DESCRIPTIVE STUDY OF THE STRATEGIES OF YOUTH MARINE TOURISM BUSINESS ACTORS ON DERAWAN ISLAND DURING THE COVID-19 PANDEMIC: COVID-19 DAN PARIWISATA: STUDI DEKSRIPTIF STRATEGI PEMUDA PELAKU USAHA WISATA BAHARI PULAU DERAWAN KETIKA PANDEMI COVID-19
No full textThis paper aims to analyze the strategies of young entrepreneurs in the marine tourism industry on Derawan Island in facing the challenges of the COVID-19 pandemic. The study employs a qualitative approach using purposive and snowball sampling techniques for informant selection. Data collection was carried out through interviews and field observations. The research applies James C. Scott’s survival strategy theory to analyze the phenomena under investigation. The results of the study indicate that young entrepreneurs in the marine tourism sector on Derawan Island were a vulnerable group during the COVID-19 pandemic. To address these challenges, the young entrepreneurs engaged in several survival strategies, including returning to fishing and adjusting the pricing of tourism packages during the new normal period
THE INFLUENCE OF DIGITAL MARKETING COMMUNICATION AND SERVICE QUALITY ON PATIENT DECISIONS IN CHOOSING UKI GENERAL HOSPITAL (RSU) SERVICES: Pengaruh Komunikasi Pemasaran Digital dan Kualitas Pelayanan Terhadap Keputusan Pasien Dalam Memilih Layanan Rumah Sakit Umum (RSU) UKI
No full textThis study aims to analyze the influence of digital marketing communication and service quality on patient decisions in choosing healthcare services at the UKI General Hospital (RSU UKI), East Jakarta. In the rapidly growing digital era, the public increasingly relies on digital platforms to seek health information before deciding on a medical facility. This research uses a quantitative method with a Structural Equation Modeling-Partial Least Squares (SEM-PLS) approach, involving 100 respondents selected through purposive sampling. The results show that digital marketing communication has a positive and significant impact on patient decision-making. Service quality also plays an essential role, with dimensions such as reliability, responsiveness, assurance, empathy, and tangibles determining patient satisfaction and choice. The combination of effective digital communication strategies and excellent service quality can enhance patient loyalty and strengthen RSU UKI’s reputation. This research offers practical implications for hospital management to optimize digital marketing strategies and continually improve service quality to remain competitive in the healthcare industry