Showing papers by "Agus Purwanto published in 2023"

Wound healing activity and flavonoid contents of purslane (Portulaca grandiflora) of various varieties

Abstract: Purslane has various varieties with different active metabolite contents that need to be explored further to find each variety's activity in wound healing. Different purslane herbs showed different antioxidant activities, suggesting they will have different flavonoid content and wound healing activity. This research aimed to evaluate purslane's total flavonoid content and wound-healing activity. The wounds induced on the rabbit back skin were divided into 6 treatment groups such as negative control, positive control, 10 and 20% purslane herbs extract varieties A, and 10 and 20% purslane herbs extract varieties C. Wounds were treated twice daily for 2 weeks, and measured on day 0, 7, 11, and 14. Total flavonoid content was measured with the AlCl3 colorimetric method. The wounds treated with 10 and 20% purslane herbs extract varieties A (Portulaca grandiflora magenta flower) have 0.32 ± 0.55 and 1.63 ± 1.96 mm wound diameters on day 7 and healed on day 11. The wounds treated with 10 and 20% purslane herbs extract varieties C (Portulaca grandiflora pink flower) showed 2.88 ± 0.51 and 0.84 ± 1.45 mm diameter and healed on day 11. The purslane herb A showed the highest wound healing activity, and purslane varieties A and C total flavonoid contents were 0.55 ± 0.02 and 1.58 ± 0.02% w/w, respectively.

Investigating The Role of Innovative Work Behavior, Organizational Trust, Perceived Organizational Support: An Empirical Study on SMEs Performance

Abstract: Objective: This study aims to analyze the relationship between perceived organizational support (POS) and organizational trust, analyze the relationship between innovative work behavior (IWB) and organizational trust, analyze the relationship between perceived organizational support (POS) and performance, and analyze the relationship between innovative work behavior (IWB) on performance, analyzing the relationship between organizational trust variables and performance. Method: This type of research is associative research, namely research that aims to determine the relationship between two or more variables. Each research indicator was measured using a Likert scale 1-5-point scale and the degree of agreement from strongly agree to strongly disagree. The analytical tool used in this study was SEM based on PLS (Partial Least Square), the respondents of this study are 546 SME owners in Banten Indonesia. The data collection technique used is simple random sampling. The scale used in the study to fill in each question item uses a Likert scale with 5 (five) alternative answers, namely strongly agree, agree, undecided, disagree, strongly disagree. Data were obtained by distributing online questionnaires via social media. Analysis of research data using Structural Equation Model Partial Least Square (SEM-PLS) using SmartPLS software. Results: The results of the hypothesis test show that the variable perceived organizational support (POS) has significant effect on organizational trust, the innovative work behavior (IWB) variable has a positive and significant effect on organizational trust, the variable perceived organizational support (POS) has a positive and significant effect on performance, the innovative work behavior (IWB) variable has a positive and significant effect on performance, the organizational trust variable has significant effect on SMEs performance. Innovative work behaviour has significant effect on performance through organizational trust, organizational trust mediate the relationship between Innovative work behaviour and performance. Perceived organizational support has significant effect on performance through organizational trust, organizational trust mediate the relationship between Perceived organizational support on performance

Teacher’s Role: Learning Service of Children with Special Needs in Inclusive School

Abstract: Children with special needs require more optimal handling from teachers, but the reality in the field is that learning services for children with special needs are still not optimal. The purpose of this study was to analyze how learning services for children with disabilities through the role of teachers. The subjects in this study were teachers in inclusive school. This research is descriptive qualitative research with interview and documentation as data collection. Data analysis is carried out in 3 (three) stages there are data reduction, data coding, and data tabulation. The results showed those services for children with special needs carried out at the primary school for inclusive education organizers, the school provides services in the form of identification and assessment. Life skills development activities at the primary school organizing inclusive education are still limited to extracurricular activities, there are no special life skills development activities for children with special needs, extracurricular activities at the primary school organizing inclusive education already have several activities to develop the abilities and talents of students. Extracurricular activities are already running and are carried outside of school hours.

Quantum Lenoir engine in the presence of minimal length

Abstract: The effect of minimal length for quantum heat engine systems is proposed. We use a system of trapped Fermi particles in an infinite potential well. The thermodynamic cycle chosen is the reversible Lenoir cycle. We use both a single particle case and a multiparticle case. The result is that the minimum length increases the efficiency of the engine if the width of the potential well is infinitely small, and the maximum value is obtained when the width of the potential well is close to zero.

Analisa Teknis Unjuk Kerja Motor Diesel Kapal Nelayan Berbahan Bakar Multi Feedstock Biodiesel

Abstract: Kebutuhan bahan bakar minyak bumi di Indonesia dari tahun ke tahun mengalami peningkatan. Peningkatan kebutuhan bahan bakar minyak bumi ini tidak diimbangi dengan peningkatan produksinya, sehingga kebutuhan bahan bakar lebih besar daripada ketersediaan bahan bakar. Salah satu bahan bakar alternatif untuk motor diesel yang telah dikembangkan di Indonesia adalah biodiesel. Biodiesel dapat dibuat dari minyak nabati yang diperoleh dari tanaman seperti minyak sawit, jarak, minyak kelapa, minyak kedelai, dll. pada masa yang akan datang bahan baku biodiesel sangat bervariasi sehingga perlu untuk memodelkan. Keberhasilan memproduksi CME (Castor Methyl Esther), PME (Palm Methyl Esther ) dan JME (Jelantah Methyl Esther) memberikan kesempatan dalam upaya untuk mempertemukannya. Karakteristik dari bahan bakar biodiesel untuk viskositas, densitas, Nilai Kalor, titik kabut, dan angka setana memenuhi syarat yang distandartkan SNI. Biodiesel dilakukan pencampuran dengan komposisi CME33,3, PME33,3, JME33,3. Bahan bakar campuran tersebut diuji cobakan pada motor diesel kapal nelayan untuk mengetahui karakteristik unjuk kerjanya. Uji coba dilakukan dengan variasi putaran motor dan variasi pembebanan. Pada kondisi beban penuh (full load) unjuk kerja motor diesel yang meliputi daya motor, torsi, efisiensi thermal dan SFOC sebagai fungsi putaran motor pada beban penuh menunjukkan bahwa bahan bakar solar lebih tinggi dibandingkan dengan bahan bakar biodiesel CME33,3, PME33,3, JME33,3.

The Effect of Principal's Leadership, Work Motivation, and School Culture on Teacher Performance at Muhammadiyah Elementry Schools in Gamping Subdistrict

Abstract: Teachers have a significant contribution to the learning success in schools. In creating conducive school, having good quality and generating graduates with integrity, good teachers’ performance is needed. Good teachers’ performance is affected by several factors including the principal's leadership, work motivation, and school culture. This study aims at analyzing whether there is a relationship between the principal's leadership, work motivation, and school culture with teachers’ performance. This research was conducted on classroom teachers at Muhammadiyah Elementary Schools in Gamping District with a population of 116. The sample used was the total population of 116. The independent variables in this study were the principal's leadership, work motivation, and school culture, while the dependent variable was teachers’ performance. The measurement of the variables was carried out by using a Likert scale. Data analysis was carried out by using multiple linear regressions with the help of SPSS 22 software. Based on the simple regression test and multiple linear regressions, the test results show that there is a significant relationship between the independent variables, the principal's leadership, work motivation and school culture on the performance of classroom teachers at Muhammadiyah Elementary Schools in Gamping District. The results of the coefficient of determination (R2) test show that teachers’ performance (Y) can be explained by the variables of the principal's leadership (X1), work motivation (X2), and school culture (X3) by 65%, while the remaining 35% is affected by other factors outside of this study. The conclusion of this study is that there is a positive and significant influence between the principal's leadership, work motivation, and school culture on the performance of classroom teachers in Muhammadiyah Elementary Schools in Gamping Subdistrict.

E-Government Implementation in the Village General Administrative Electronic System (SEDULUR) Program

Abstract: Purpose: E-government is one of the government's efforts to develop the implementation of electronic-based government activities in order to improve the quality of service to various parties effectively and efficiently. In the context of implementing e-government in Cirebon City, Cirebon City is carrying out a smart city or smart city movement with its vision of realizing Cirebon as a creative, innovative, synergistic and competitive smart city in 2028. Lots of programs have been implemented as supporters of the realization of the smart city movement in the city of Cirebon. Research with the title "Implementation of E-government in the Village Public Administration Electronic System Program (SEDULUR) in Kalijaga Village, Harjamukti District, Cirebon City", has a formulation of the problem of how to implement the sedulur program in Kalijaga Village, Harjamukti District, Cirebon City. Design/methodology/approach: This research uses a case study method with a qualitative approach that is descriptive. Determination of informants using purposive sampling. The theoretical foundation used is the Balanced E-government Scorecard theory with five dimensions in it, the five dimensions are: benefits, efficiency, participation, transparency, and change management. Findings: Based on the research that has been done, it is concluded that the implementation of e-government in Kalijaga Village, Harjamukti District, Cirebon City with case studies of the sedulur program has not been optimal in its implementation, this is because the sedulur program still wants to be developed so that later all people can access it without having to contact the head of the RW First of all, it's just that the budget was diverted during the Covid-19 pandemic which hampered the development of the Sedulur program. Practical implications: The efforts that have been made are with Harjamukti District supporting government programs related to people who are aware and obedient of paying taxes so that revenue-sharing funds (DBH) from these taxes can be allocated for the development of the sedulur program. Paper type: Research paper

Sustainability Status of The Ecological Dimension in The Fisheries Management of Bali Sardine (Sardinella lemuru Bleeker 1853) in The Bali Strait

Abstract: Bali Strait included in the 573 Fisheries Management Area of Indonesia. One of the dominant commodities in these waters were Bali sardine (Sardinella lemuru). The dynamics of the lemuru fishery in the Bali Strait is fluctuating and tends to decrease. This study aims to determine the sustainability status of the ecological dimensions in the fisheries management of Bali sardine in the Bali Strait. Survey method were used in this study to obtain primary and secondary data related to ecological dimension attributes and then analyzed using the RAPFISH (Rapid Apraisal Technique for Fisheries) method. The results of this study indicate that the ecological dimension of lemuru fishery management in the Bali Strait has an index of 44.03 (less sustainable). There are three sensitive attributes that affect the sustainability of the ecological dimension, there were the level of utilization of fish resources, size of fish caught, and the number of catches. The recommended improvements for the sustainability of the ecological dimension were limiting fishing quotas, limiting the mesh size of fishing gear, and limiting areas and fishing seasons.

Keterkaitan musim hujan dan musim angin dengan musim penangkapan ikan lemuru yang berbasis di ppn pengambengan

Abstract: Musim penangkapan ikan seringkali dikaitkan dengan kondisi iklim dan cuaca seperti hujan dan musim angin. Penelitian ini bertujuan untuk menganalisis keterkaitan antara musim hujan dan musim angin dengan musim penangkapan ikan lemuru di perairan Selat Bali. Data yang digunakan adalah data produksi bulanan dari Pelabuhan Perikanan Nusantara (PPN) Pengambengan periode Januari 2015 hingga Oktober 2022. Selain itu, data curah hujan, data arah dan kecepatan angin didapatkan dari data harian stasiun klimatologi BMKG Jembrana pada periode data yang sama. Masing-masing komponen data dianalisis secara deskriptif kuantitatif. Selanjutnya dihitung indeks musim hujan, musim angin kencang dan musim penangkapan dengan metode persentase rata-rata. Hasil penelitian menunjukkan periode musim hujan terjadi pada bulan Oktober hingga Maret dan musim kemarau pada bulan Juni hingga September. Arah angin dominan adalah arah tenggara (150 derajat) dengan nilai resultan 62%. Musim angin tenggara (muson timur) terjadi pada bulan Juni – September dan musim angin barat daya (muson barat) pada bulan Desember – Maret. Diantara dua musim utama tersebut terdapat musim peralihan yaitu bulan April-Mei dan Oktober-November. Musim penangkapan ikan lemuru terjadi pada bulan September, Oktober, November, Desember dan April. Hasil uji beda Mann-Whitney menunjukkan terdapat perbedaan musim penangkapan ikan lemuru pada musim muson barat dan muson timur dengan musim peralihan.Kata kunci: musim hujan, musim angin muson, musim penangkapan lemuru

Dampak covid-19 terhadap prestasi akademik berdasarkan latar belakang keluarga di selat panjang

Abstract: Tujuan dari penelitian ini adalah untuk mengetahui hubungan antara tingkat pendidikan, pengetahuan, ekonomi dan motivasi terhadap hasil belajar pada siswa sekolah dasar pada masa pandemi. Penelitian ini merupakan penelitian korelasional dengan jumlah sampel 76 siswa sekolah dasar. Teknik pengumpulan data menggunakan observasi, angket dan wawancara. Teknik analisis data dilakukan dengan regresi linier berganda. Pengolahan data menggunakan aplikasi SPSS (Statistical Product and Service Solutions). Berdasarkan hasil analisis data diperoleh uji stimulan dimana T skor Ha 1 diterima dengan skor 0.09≤1.99. Untuk Ha 2 diterima dengan skor 32.4≥2.50. Untuk Ha 3 diterima dengan skor 39.4≥2.50 dan Ha 4 diterima dengan skor 16.44≥2.50. Berdasarkan data yang telah diperoleh, dapat disimpulkan bahwa terdapat hubungan yang signifikan antara tingkat pendidikan, pengetahuan, ekonomi dan motivasi orang tua terhadap hasil belajar siswa Proses pembelajaran dapat dipengaruhi oleh banyak faktor, diantaranya adalah tingkat pendidikan dan pengetahuan orang tua, tingkat ekonomi orang tua, motivasi dan lain-lain.

Hubungan Kekuasaan Otoritas, Persepsi Keadilan, Kepercayaan Publik, dan Kebijakan Tarif Pajak terhadap Kepatuhan Wajib Pajak pada Badan Pendapatan Daerah Kabupaten Bulungan

Abstract: This study aims to analyze relationship between power and authority, perception of fairness, public trust, and tax rate policies on taxpayer compliance at the Regional Revenue Agency of Bulungan Regency. The method applied to conduct this research is a quantitative approach method using primary data and secondary data. In this study, the population is taxpayers who have registered and have a 2021 Regional Taxpayer Identification Number (NPWD) of 33,164 taxpayers. The sampling technique in this study was simple random sampling. By using the Slovin formula, the sample obtained is 395 respondents. In this study, data collection techniques were used which included questionnaires, literature studies, and interviews. The data analysis technique used is classical assumption testing and multiple linear regression analysis. The results obtained show that partially there is no significant influence of the tax authorities and tax rate policies on taxpayer compliance. Meanwhile, the variable perception of justice and public trust has a positive and significant relationship to taxpayer compliance. Furthermore, it simultaneously shows that there is a strong relationship between the power of the tax authorities, perceptions of fairness, public trust and tax rate policies on taxpayer compliance at Bapenda Bulungan Regency.