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Potensi Bacillus cereus dalam produksi biosurfaktan Nur Asni Setiani; Nia Agustina; Irma Mardiah; Syarif Hamdani; Dewi Astriany
Jurnal Biologi Udayana Vol 24 No 2 (2020): JURNAL BIOLOGI UDAYANA
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBIOUNUD.2020.v24.i02.p09

Abstract

Biosurfactants from microorganisms have stable physical and chemical properties, environment friendly, biodegradable, renewable, cheaper and low toxicity that can be used in the pharmaceutical industry as antibacterial. The aim of this study was to examine the emulsification and characterization of biosurfactant from Bacillus cereus. Hemolysis and spreading oil tests was performed as an initial screening. Biosurfactant production was carried out by growing bacteria on oil-enriched media with shaker system for 7 days. The supernatant was measured for biosurfactant activity through an emulsification index and characterized using thin layer chromatography and antibacterial qualitative testing. The emulsification index on days 0, 1, 3, 5, and 7 showed percentage in sequence 44,83%, 48,28%, 51,72%, 46,43%, and 51,50%. The formation of red stains on TLC plates with ninhydrin appearance showed lipopeptide groups. Antibacterial testing using Escherichia coli and Staphylococcus aureus showed the formation of clear zones around the disk paper. Bacillus cereus can produce biosurfactants of the lipopeptide group with the largest emulsification index of 51.72% and has antibacterial activity against both gram positive and gram negative.
FAKTOR-FAKTOR YANG MEMPENGARUHI RENDAHNYA TINGKAT PENDIDIKAN MASYARAKAT DI DESA MADE KECAMATAN KUDU KABUPATEN JOMBANG Nia Agustina; Santri Salam
Prosiding Conference on Research and Community Services Vol 1, No 1 (2019): Prosiding Conference on Research and Community Services)
Publisher : STKIP PGRI Jombang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pendidikan merupakan sebuah cara untuk meningkatkan kualitas sumber daya manusia agar mampu berfikiran logis, analisis, sistematis, dan kritis dalam mewujudkan cita-cita bangsa. Alasan pemilihan topik ini berawal dari rasa keingintahuan terhadap hal-hal yang menjadi latar belakang mengapa banyak masyarakat Desa Made yang tidak melanjutkan pendidikan kejenjang yang lebih tinggi. Tujuan dari penelitian ini adalah untuk mengetahui faktor-faktor yang mempengaruhi rendahnya pendidikan yang ada pada Desa Made dan Bagaimana pandangan masyarakat Desa Made terhadap pentingnya pendidikan. Metode yang digunakan dalam penelitian ini dengan menggunakan pendekatan kualitatif yaitu dengan melakukan observasi, wawancara dan studi dokumen. Dengan fungsi triangulasi sumber hasil penelitian adalah faktor-faktor yang mempengaruhi rendahnya tingkat pendidikan masyarakat Desa Made antara lain faktor motivasi individu, kondisi sosial, kondisi ekonomi, motivasi orang tua, serta budaya dan pandangan masyarakat Desa Made terhadap pentingnya pendidikan masih terbilang kurang, terlihat dari kepeduliannya untuk menyekolahkan anaknya belum menjadi suatu hal yang utama. Dengan adanya penelitian ini diharapkan masyarakat lebih memahami pentingnya pendidikan agar tercipta sumber daya manusia yang lebih berkualitas
Model Kelembagaan Pemerintah Desa Nia Agustina; Esa Esa; Mohamad Yusuf
TUTURAN: Jurnal Ilmu Komunikasi, Sosial dan Humaniora Vol. 2 No. 1 (2024): Februari: TUTURAN: Jurnal Ilmu Komunikasi, Sosial dan Humaniora
Publisher : Institut Nalanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47861/tuturan.v2i1.775

Abstract

In Law Number 6 of 2014 concerning Villages, it is stated that villages and traditional villages or what are called by other names are legal community units that have territorial boundaries and are authorized to regulate and manage government affairs, the interests of local communities based on community initiatives, rights of origin, and /or traditional rights recognized and respected in the government system of the Unitary State of the Republic of Indonesia. The Village Head or other designation is a Village Government official who has the authority, duties and obligations to organize the Village household and carry out tasks from the Government and Regional Government. Organizational Structure and Work Procedures Village Government is an institutional system in arranging tasks and functions as well as work relationships. According to Village Law, villages are led by a set of village officials known as the village government. However, what often happens is that village government is often confused or even misunderstood with village government
Penilaian Kinerja dengan Menggunakan Konsep Balanced Scorecard Rezki Zurriah; Nasrul Kahfi Lubis; Isna Ardila; Nia Agustina
Jurnal Penelitian Ekonomi Akuntansi Vol 8 No 2 (2024)
Publisher : Program Studi Akuntansi Fakultas Ekonomi Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jensi.v8i2.10110

Abstract

This study aims to determine and analyze the performance assessment of PT. Bank SumutkcpPulo Brayan which is measured from a financial perspective, customer perspective, internal business process perspective, growth and learning perspective. Sampling in this study is to use a saturated sample selection (simple non random sampling). Data collection techniques in this study were interviews, questionnaires, and literature study, documentacion. The data analysis method used was descriptive qualitative analysis method. The results showed that the assessment of the performance of the PT. Bank SumutKcpPulo Brayan when measured from a financial perspective the results were very bad, the performance assessment of the PT. Bank SumutKcpPulo Brayan when measured from the customer's perspective was good, the performance assessment of the PT. Bank SumutKcpPulo Brayan when measured from the perspective of internal business processes are good, and the performance appraisal of the office of PT. Bank SumutKcpPulo Brayan when measured from a growth and learning perspective is good.
Efektivitas Model Pembelajaran Kontekstual terhadap Peningkatan Numerasi Matematika Siswa Sekolah Dasar Riki Wahyudi; Nia Agustina; Desvia Silvana; Suci Rahmadani; Nova Umi Soimah; Angelina Maharani; Annisa Farzana Firdausi; Yeni Tavia; Fachrul Rozy; Andri Andri
Jurnal Pengabdian Masyarakat Waradin Vol. 5 No. 3 (2025): September : Jurnal Pengabdian Masyarakat Waradin
Publisher : Sekolah Tinggi Ilmu Ekonomi Pariwisata Indonesia Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56910/wrd.v5i3.815

Abstract

Numeracy is an important skill that elementary school students must have, but in reality it is still relatively low because learning tends to be conventional and less contextual. Numeracy does not only include the ability to count, but also the ability to understand, use, and interpret numbers and data in various daily life contexts. One of the causes of low student numeracy is a learning approach that is less interesting and not related to real situations. This study aims to test the effectiveness of the contextual learning model (Contextual Teaching and Learning/CTL) in improving students' mathematical numeracy skills. The research design used was a one-group pretest-posttest experiment with 23 fifth-grade students of SDN 002 Teluk Bintan as subjects. The instrument in the form of a numeracy test was given before and after the implementation of CTL, then the data were analyzed using prerequisite tests (normality and homogeneity) followed by a paired sample t-test. The results showed a significant increase in students' numeracy skills. The average pretest score of 24.78 increased to 73.91 in the posttest with a significance value of 0.000 <0.05. This increase proves that CTL is effective in helping students master numeracy through a learning process that links mathematical concepts with real experiences. Thus, the contextual learning model can be an alternative learning strategy that is relevant for increasing elementary school students' numeracy, while emphasizing the importance of implementing a more applicable approach in mathematics learning.