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All Journal Jurnal Kelautan Tropis Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences
Indrihastuti Sulistianingtiyas
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Religion Arts Humanities Economics, Econometrics & Finance Social Sciences

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Potensi Rumput Laut Eucheuma sp. Terhadap Kepadatan Fitoplankton Chlorella sp. Ria Azizah; Indrihastuti Sulistianingtiyas; Delianis Pringgenies; Siti Rudiyanti
Jurnal Kelautan Tropis Vol 18, No 3 (2015): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.59 KB) | DOI: 10.14710/jkt.v18i3.530

Abstract

Chlorella sp. merupakan sumber makanan bagi ikan dan udang. Untuk menumbuhkan, Chlorella sp. maka diperlukan media kultur dengan nutrien yang baik. Eucheuma sp. merupakan rumput laut yang mengandung mineral - mineral yang bermanfaat bagi pertumbuhan Chlorella sp. Pemberian ekstrak Eucheuma sp. diharapkan dapat mendukung pertumbuhan Chlorella sp. Tujuan dilakukan penelitian untuk mengetahui pengaruh ekstrak Eucheuma sp. terhadap kepadatan Chlorella sp. dan konsentrasi terbaik dari ekstrak Eucheuma sp. yang menghasilkan kepadatan Chlorella sp. yang tertinggi. Penelitian ini dilaksanakan pada bulan Januari - Maret 2005 di Laboratorium Bioteknologi dan Eksplorasi Laut, Teluk Awur, UNDIP, Jepara dan Laboratorium Jurusan Perikanan, UNDIP, Semarang. Materi yang digunakan yaitu ekstrak Eucheuma sp., Chlorella sp. dan media kultur. Metode yang digunakan adalah eksperimental laboratories. Konsentrasi ekstrak Eucheuma sp. yang digunakan adalah : A (10 mg/L); B (100 mg/L); C (200 mg/L); D (300 mg/L); E (400 mg/L); F (500 mg/L); G ( tanpa pemberian ekstrak Eucheuma sp.).Hasil penelitian menunjukkan perlakuan D (300 mg/L) menghasilkan kepadatan Chlorella sp. tertinggi pada puncak populasi, yaitu 6,293 log sel/mL dan pada akhir populasi, yaitu 6,012 log sel/mL dengan konstanta pertumbuhan spesifik sebesar 0,161.Kata kunci: Kepadatan, Chlorella, EucheumaChlorella sp. is the source of food to prawn and fish. In order to grow Chlorella sp. so need a culture media with a good nutrient. Eucheuma sp. is a seaweed it cantains benefit minerals for the growth of Chlorella sp. The giving of Eucheuma sp. it is to be hoped to support the the growth of Chlorella sp. This research is aimed to know the effect of Eucheuma sp. extract to density of Chlorella sp. and the best concentration of Eucheuma sp. extract produce the highest density of Chlorella sp. This research was conducted in January – March 2005 at the Laboratory of Biotechnology and Marine Exploration, Teluk Awur, UNDIP, Jepara and Laboratory of Fisheries Department UNDIP, Semarang. Materials used in this research consisted of Eucheuma sp. extract, Chlorella sp. and culture media. This research method used experimental laboratories. The concentration that used in this research : A (10 mg/L); B (100 mg/L); C (200 mg/L); D (300 mg/L); E (400 mg/L); F (500 mg/L); G ( without giving extract of Eucheuma sp.). The result of this research showed that the D treatment produce the highest Chlorella sp. density at peak of population, that is 6,293 log sel/mL and the end of population that is 6,012 log sel/mL with specific growth rate 0,161.Keyword : Density, Chlorella., Eucheuma
The Effect of Digitalization in the Workplace on Employee Performance Mediated By Employee Attachment (Study on Employees of the Center for Product Processing Research and Marine and Fisheries Biotechnology, Central Jakarta) Indrihastuti Sulistianingtiyas; Indi Djastuti
Budapest International Research and Critics Institute-Journal (BIRCI-Journal) Vol 5, No 2 (2022): Budapest International Research and Critics Institute May
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birci.v5i2.5387

Abstract

Digitization in the workplace based on technology activities is leading to new ways of working that organizations need. In a digital work environment, individual work styles have an effect on overall efficiency and performance. The implementation of digitization in the workplace was introduced as a performance improvement, but the complexity of learning requires extra time and willingness of employees to learn new technologies. The purpose of this study was to examine and analyze the effect of digitization in the workplace on employee performance mediated by employee engagement. The population in this study was ASN BBRP2BKP with a total of 92 people. This study uses a survey method for collecting descriptive quantitative data with questionnaires and census techniques on all members of the population. The analysis technique uses Partial Least Squares (PLS). The results of this study indicate that digitization in the workplace has a positive and significant effect on employee performance which is mediated by employee engagement. The managerial implication of this research is that digitization in the workplace increases employee performance expectations thereby increasing work productivity, fostering good employee attitudes towards the use of technology, increasing employee self-efficacy in completing work, encouraging employees to take initiative, updating skills, creative solutions, active participation, new challenges, as well as enabling employee engagement in an integrated and sustainable way of thinking with passion and determination to work with dedication in doing work seriously.
Co-Authors Delianis Pringgenies Indi Djastuti Ria Azizah Siti Rudiyanti