Claim Missing Document
Check
Articles

The Effect of Synthetic Fertilizer Urea, TSP and ZA on Total Biomass and Chlorophyl Content of Dunaliella sp. Junda, Muhammad; Adhyani, Andi Nurul; Muis, Abd; Kurnia, Nani; Rachmawaty, Rachmawaty
Bionature Vol. 25 No. 1 (2024): April-Juni 2024
Publisher : Jurusan Biologi Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/bionature.v25i1.2229

Abstract

This research is an experimental research which aims to determine the effect of synthetic fertilizers urea, TSP and ZA on the amount of biomass and chlorophyll content of Dunaliella sp. on a laboratory scale. The research design used was a completely randomized design (CRD) consisting of 5 treatments with 3 replications each to obtain 15 treatment combinations. The research method consisted of several stages, namely preparation of tools and materials consisting of making culture media, making walne medium and making treatment medium, sterilizing tools and medium, preparing Dunaliella sp inoculum. on Walne medium with a static system, as well as optimizing the growth of Dunaliella sp.. The parameters observed in this study were phytoplankton biomass (dry weight), total chlorophyll content, salinity, pH, temperature, and light intensity. Based on the research results, the highest average biomass was found in the P3 treatment, namely the Walne medium treatment with the addition of 105 ppm urea, 80 ppm TSP, and 80 ppm ZA which produced an average of 5.23 g/L. Furthermore, the highest average results for measuring chlorophyll content were found in treatment P4 with walne medium treatment which added 115 ppm urea, 75 ppm TSP and 75 ppm ZA which produced an average of 1.81 µg/mL. So it can be concluded that the synthetic fertilizers urea, TSP and ZA have an effect on the amount of biomass and chlorophyll content on the growth of Dunaliella sp.
Optimization of Pectin Extraction from Pomelo Peels (Citrus maxima) using Response Surface Methodology Pagarra, Halifah; Hartati; Rachmawaty, Rachmawaty; Sahribulan, Sahribulan
Bionature Vol. 25 No. 1 (2024): April-Juni 2024
Publisher : Jurusan Biologi Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/bionature.v25i1.2340

Abstract

Pectin is an essential polysaccharide that is usually found in the skin of various fruits and vegetables. It acts as a gelling agent and stabilizer in many food and pharmaceutical industries. This study focuses on the potential of grapefruit peel as a source of pectin. Pectin is isolated from hot grapefruit peel powder (albedo). The aim of this study was to extract pectin from grapefruit peel (albedo), and central composite design (CCD) together with the numerical optimization method of response surface methodology (RSM) was used to optimize the processing parameters, including temperature (60, 80 and 100 ° C), pH (1.5, 2.0 and 2.5 ) and time (60, 90 and 120 min) The findings show that the studied parameters have a major impact on the pectin yield. The resulting second-order polynomial model thoroughly explains the relationship between input and output variables and how the data is varied. The highest pectin yield was 28.45% at optimal conditions achieved: temperature: 100° C; pH: 1.5; and extraction time: 120 minutes. Temperature, pH, and extraction time have their own large impact on pectin yield which has a significant effect.
Characterization Of Endophytic Fungi From Several Karst Plants Growing In Maros Pangkep Region Inhibiting The Growth Of Pathogenic Fungi Fusarium Oxysporum Rahma, Rahma; Rachmawaty, Rachmawaty; Hartono, Hartono
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 14, No 1 (2025): Maret
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/sainsmat141682502025

Abstract

Fusarium oxysporum merupakan salah satu cendawan yang menyebabkan munculnya penyakit tular tanah yang membahayakan tanaman. Sehingga perlu dilakukan penghambatan pertumbuhan Fusarium oxysporum oleh cendawan endofit dari tanaman karst dengan melakukan isolasi, uji antagonisme dengan melihat presentasi daya hambat kemudian melakukan identifikasi mirkoskopik. Daya hambat tertinggi terdapat pada isolate 4E.B (kuat) 58%, 1E.A, 2A.D dan 4B.D memiliki kemampuan daya hambat yang (sedang) karena diatas dari 30%. Sedangan isolate 3A.A dan 3C.D dikategorikan rendah (lemah) terhadap Fusarium oxysporum dengan nilai daya hambat kurang dari 30%. Mekanisme daya hambat yang terjadi pada isolat 1E.A dan 2A.D adalah hiperparasitisme  sedangkan 3A.A, 3C.D, 4B.D dan 4E.B adalah kompetisi untuk mendapatkan ruang tumbuh dan nutrisi.
Bankruptcy Analysis Using Altman Z-Score Method And Springate Method In Manufacturing Companies In The Footwear Sub-Sector Rachmawaty, Rachmawaty; Susanto, Susanto
Fin Sinergy: Jurnal Manajemen Keuangan Vol 3 No 1 (2025): Fin Synergy: Jurnal Manajemen Keuangan
Publisher : Doktoral Ilmu Manajemen, Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56457/fin.v3i1.752

Abstract

-
PEMBERDAYAAN KOLEKTIF : EDUKASI INTERAKTIF PENCEGAHAN STIGMA KUSTA DI LINGKUNGAN KERJA Idris, Irma Suryani; Rachmawaty, Rachmawaty; Yusuf, Yusnaeni; Hala, Yusminah; Purnamasari, Andi Bida
Jurnal Abdi Negeriku Vol 4, No 1 (2025): Jurnal Abdi Negeriku
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/jan.v4i1.74103

Abstract

Stigma kusta yang bertentangan dengan fakta medis (penyakit sulit menular dan dapat disembuhkan) masih merugikan penyintas di lingkungan kerja, termasuk di FMIPA UNM, melalui pengucilan dan kehilangan peluang karir. Lingkungan kerja hierarkis seperti kampus berpotensi ganda: memupuk stigma atau menjadi wadah perubahan efektif. Kegiatan "Pemberdayaan Kolektif" ini dirancang mengatasi hal ini dengan dua pendekatan interaktif: Pemaparan Fakta Medis Akurat: Penjelasan ilmiah penyebab, penularan, pengobatan (MDT gratis), dan literasi eliminasi stigma Kusta. Kombinasi ini bertujuan membangun empati dan tanggung jawab bersama, memberdayakan staf kebersihan sebagai peserta pengabdian menjadi agen perubahan untuk menciptakan lingkungan kerja FMIPA UNM yang inklusif dan bebas stigma melalui tindakan nyata.  Kata kunci: Pemberdayaan,Sstigma, Kusta, Edukasi, Interaktif  Abstract The stigma of leprosy that contradicts medical facts (the disease is difficult to transmit and can be cured) still harms survivors in the work environment, including at FMIPA UNM, through ostracism and loss of career opportunities. Hierarchical work environments such as campuses have a double potential: fostering stigma or becoming a place for effective change. This “Collective Empowerment” activity is designed to address this with two interactive approaches: Exposure of Accurate Medical Facts: Scientific explanation of causes, transmission, treatment (free MDT), and Leprosy stigma elimination literacy. This combination aims to build empathy and shared responsibility, empowering cleaning staff as service participants to become agents of change to create an inclusive and stigma-free FMIPA UNM work environment through real action.  Keywords: Empowerment, stigma, leprosy, Education, interactive
PELATIHAN TEKNIK DASAR KULTUR JARINGAN TUMBUHAN BAGI GURU BIOLOGI SMA: MENUJU KOMPETENSI LABORATORIUM YANG APLIKATIF Yusuf, Yusnaeni; Rachmawaty, Rachmawaty; Hartono, Hartono; Muis, Abd; Purnamasari, Andi Bida
Paramacitra Jurnal Pengabdian Masyarakat Vol. 2 No. 02 (2025): Volume 02 Nomor 02 (Mei 2025)
Publisher : PT Ininnawa Paramacitra Edu

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

Abstract

Kegiatan pengabdian ini bertujuan untuk meningkatkan kompetensi guru dalam mengajarkan konsep kultur jaringan tumbuhan melalui pelatihan praktis. Kultur jaringan tumbuhan adalah teknik bioteknologi yang sangat penting dalam bidang pertanian dan biologi, namun banyak guru yang belum menguasai teknik ini dengan baik. Melalui pelatihan praktis, diharapkan guru dapat lebih memahami dan mengajarkan materi ini dengan cara yang lebih menarik dan efektif. Pelatihan ini mencakup teori dasar, teknik praktis, serta penyusunan materi ajar yang relevan untuk siswa. Hasil dari pelatihan ini menunjukkan peningkatan kompetensi guru dalam mengajarkan kultur jaringan tumbuhan, yang berdampak positif pada kualitas pembelajaran di sekolah.
Innovation in the Development of E-LKPD Oeriented on Project Based Learning (Pjbl) Integrated with Steam in the Subject of Biology Ahmad, Siti Nurfadhilah Mujaahidah; Nurhayati B, Nurhayati B; Rachmawaty, Rachmawaty
Jurnal Penelitian Pendidikan IPA Vol 11 No 6 (2025): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i6.11391

Abstract

This study aims to produce a teaching material product in the form of e-LKPD oriented Project Based Learning integrated with STEAM in Biology Subject for Phase E SMA/MA Students which is valid, practical and effective. The subjects of the study were biology teachers and students of class X 5 SMAN 18 Makassar. This type of research is research and development (R&D) which adapts the ADDIE development model which has five stages, namely analysis, design, development, implementation, and evaluation. Validity data were collected through a product validation questionnaire on environmental change material. Practicality data were collected through student and teacher response questionnaires, and effectiveness data were collected through cognitive learning outcome tests. The data obtained were analyzed using descriptive statistical analysis. The results showed that the average value of the total validity and product development was in the very high validity category (1). The response results meet the criteria of practicality because the average student response to product development is in the very practical category (85.22%) and the average teacher response value to product development is in the very practical category (93.31%). Product development meets the criteria of effectiveness because the average N-gain value of each student is in the moderate category (0.7).
Analisa Keuangan Sebelum, Selama, dan Sesudah Pandemi Covid-19 Pada PT Lippo Karawaci Tbk Sarah, Sitti; Rachmawaty, Rachmawaty
Madani: Jurnal Ilmiah Multidisiplin Vol 3, No 7 (2025): Agustus 2025
Publisher : Penerbit Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.16788188

Abstract

This research aims to analyze the financial performance of PT Lippo Karawaci Tbk in the period of the first quarter of 2018 (Q1 2018) to the fourth quarter of 2023 (Q4 2023) using financial ratios including Current Ratio (CR), Quick Debt to Ratio (QER), Quick Debt Ratio (QR), Ratio (DAR), Return on Assets (ROA), Return on Equity (ROE), and Total Asset Turnover (TATO). Analyzes were conducted by comparing ratio values against industry standards and dividing them into three phases: before, during, and after the COVID-19 pandemic. The results of the study show that the liquidity and solvency levels of the company are best classified, indicated by the CR and QR values being well above the standard as well as the DER and DAR within reasonable limits. In contrast, the profitability to activity ratios were below industry standards, with significant declines in the pandemic period. Entering 2023, performance started to improve marked by positive ROA and ROE as well as improved TATO.
Analysis of Social and Environmental Impact Measurement Difficulties in Green Investment and Sustainable Finance Djafar, Djafar; Tabsir, Muhammad Kusnady; Rachmawaty, Rachmawaty; Djabir, Muh; Pratiwi Ar, Dhita
Advances in Management & Financial Reporting Vol. 3 No. 3 (2025): June - September
Publisher : Yayasan Pendidikan Bukhari Dwi Muslim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60079/amfr.v3i3.610

Abstract

Purpose: This study examines the challenges in measuring social and environmental impacts in green investment and sustainable finance, with a focus on methodological inconsistencies, data quality, and the application of sustainability standards. It also explores the gap between theoretical frameworks and their practical implementation in corporate sustainability reporting. Research Method: The research employed a systematic literature review (SLR) approach to synthesize existing studies and identify recurring challenges in impact assessment methodologies. The SLR integrated theoretical perspectives, such as stakeholder and legitimacy theories, to connect the findings to established frameworks, highlighting their practical limitations in real-world applications. Results and Discussion: The study revealed significant inconsistencies in the methodologies used for impact measurement, including the limitations of both quantitative and qualitative approaches. Issues with data quality, such as reliance on self-reported data without adequate third-party verification, compromised the reliability of sustainability claims. Additionally, varying and ambiguous sustainability standards were shown to create confusion and potential greenwashing. The findings highlight the disparity between theoretical frameworks and their practical application, which undermines stakeholder trust and organizational legitimacy. Implications: This research contributes to academic knowledge by providing an integrated view of current challenges in sustainability impact measurement. It recommends adopting mixed-methods approaches and advanced technologies, such as blockchain, to improve transparency and reliability in sustainability reporting. The study suggests that aligning methodologies with comprehensive theoretical frameworks can enhance corporate practices and bolster stakeholder confidence in sustainability claims.
Analisis Kinerja Keuangan Pada Perusahaan Manufaktur Di PT. Perusahaan XYZ Pratiwi, Melinda; Rachmawaty, Rachmawaty; Retnaning Sampurnaningsih, Sri
Jurnal Neraca Peradaban Vol. 5 No. 3 (2025): Jurnal Neraca Peradaban
Publisher : Prodi Akuntansi STIE Hidayatullah Depok

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55182/jnp.v5i3.609

Abstract

Penelitian ini bertujuan untuk menganalisis kinerja keuangan PT. XYZ, sebuah perusahaan manufaktur instrumen musik non-tradisional, selama periode 2020–2024. Penelitian menggunakan metode kualitatif yang menggali lebih mendalam kinerja keuangan melalui deep interview menggunakan metode Triangulasi untuk mengidentifikasi faktor-faktor yang memengaruhi fluktuasi penjualan yang berdampak kepada profitabilitas perusahaan. Pada penelitian ini juga dilakukan Analisa keuangan melalui Analisa vertikal dan Horizontal laporan keuangan dan Analisa rasio keuangan untuk mendukung analisis keuangan Perusahaan. Hasil penelitian menunjukkan bahwa terjadi penurunan signifikan dalam volume penjualan pada tahun 2023 dan 2024 yang dipengaruhi oleh perubahan tren gaya hidup konsumen, meningkatnya persaingan, kualitas produk yang menurun, dan kurangnya efisiensi produksi. Namun, perusahaan juga menunjukkan peningkatan profitabilitas pada tahun tertentu sebagai hasil dari strategi pemasaran digital dan penguatan kualitas produk. Penelitian ini menegaskan pentingnya sinergi antara pengelolaan keuangan, adaptasi terhadap pasar, dan strategi operasional yang berkelanjutan dalam menjaga kinerja perusahaan di tengah dinamika industri manufaktur.