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All Journal Formica Education Online Jurnal Biodjati Jurnal Ilmu Alam dan Lingkungan Assimilation: Indonesian Journal of Biology Education Jurnal Ilmiah Sains
Tina Safaria Nilawati
Study Program Of Biology, Universitas Pendidikan Indonesia, Street Of Dr. Setiabudhi No. 229 Bandung, West Java
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Mathematics Physics Veterinary

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ANALISIS RELEVANSI DESAIN KEGIATAN LABORATORIUM TERHADAP KOMPETENSI DASAR PADA KONSEP PROTISTA Rini, Annisa Setya; Supriatno, Bambang; Nilawati, Tina Safaria
Formica Education Online Vol 1, No 1 (2014): Formica Education Online
Publisher : Formica Education Online

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

Abstract

Penelitian deskriptif ini bertujuan menganalisis relevansi desain kegiatan laboratorium terhadap kompetensi dasar yang digunakan dalam pembelajaran yang berasal dari buku paket, buku latihan kegiatan siswa (LKS) ataupun desain kegiatan laboratorium buatan guru. Populasi penelitian adalah desain kegiatan laboratorium SMA kelas X yang digunakan guru sebagai rujukan kegiatan laboratorium. Sampel penelitian adalah seluruh desain kegiatan laboratorium konsep protista yang digunakan di SMA Kota Bandung yang diambil melalui purposive sampling. Hasil penelitian menunjukan bahwa desain kegiatan laboratorium konsep Protista yang dianalisis telah mencapai tuntutan kompetensi dasar. Hal ini terlihat dari tujuan praktikum pada desain kegiatan laboratorium yang dianalisis sudah menuntun siswa untuk mencapai tuntutan kompetensi dasar. Hasil analisis langkah prosedural, sebagian besar langkah prosedural yang dicantumkan dapat dikerjakan dan kemunculan objek atau event dapat teramati yang sesuai dengan tujuan praktikum dan dapat dijadikan dasar pembentukan knowlegde claim. Hasil analisis objek atau event menunjukkan bahwa objek atau event didapatkan melalui seluruh langkah prosedural dan sesuai dengan pertanyaan fokus sehingga dapat memenuhi tuntutan kompetensi dasar. Pertanyaan praktikum mengarahkan siswa pada pembentukan knowledge claim yang sesuai dengan kompetensi dasar serta membantu siswa untuk mengaitkan antara fakta yang teramati dengan konsep yang akan dibentuk menjadi knowledge claim konsep Protista yang diharapkan sesuai kompetensi dasar. Kata kunci: relevansi, desain kegiatan laboratorium, kompetensi dasar, protista
Releksi Fungsi Lahan terhadap Biodiversitas Tumbuhan di Daerah Aliran Sungai Cilaja, Ujung Berung Hertien Koosbandiah Surtikanti; Wahyu Surakusumah; Tina Safaria; Afri Irawan; Amelia Qodaryanti
Jurnal Biodjati Vol 1, No 1 (2016): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v1i1.1039

Abstract

Abstrak. Ketergantungan manusia terhadap lahan sangat terlihat nyata dengan adanya perubahan fungsi lahan. Perubahan fungsi lahan juga berdampak terhadap tingkat biodiversitas tumbuhan. Studi ini mempelajari tingkat biodiversitas dan kelimpahan tumbuhan di tiga lokasi yang berbeda yaitu lahan konservasi pinus/perkebunan kopi, lahan persawahan dan lahan pemukiman. Ketiga lahan tersebut berada di Daerah Aliran Sungai (DAS) Cilaja yaitu di Desa Giri Mekar dan Desa Sindanglaya Kabupaten Bandung. Dalam penelitian ini dilakukan metode sampling struktur komunitas vegetasi untuk mengetahui komposisi, struktur dan jenis vegetasi serta perbedaan komunitas di tiga titik lokasi tersebut. Untuk analisis kuantitatif digunakan metode kuadran. Hasil penelitian menunjukkan bahwa lahan pemukiman desa lebih beragam dibandingkan dengan lahan sawah dan lahan perkebunan kopi. Dapat disimpulkan secara umum bahwa keterlibatan dalam mengelola lahan dapat merubah komunitas, tingkat keanekaragaman dan dominansi tumbuhan.Kata kunci : DAS, tingkat biodiversitas, metode sampling struktur komunitas vegetasi Abstract. Human dependence on land is very evident with the change in land use. Changes in land use also have an impact on the level of plant biodiversity. The study followed the level of biodiversity and abundance of plants in three different locations namely conservation land pine / coffee plantations, rice fields and residential land. The third land is located in the Watershed (DAS) Cilaja is in the village of Giri Mekar and Rural Sindanglaya Bandung regency. In this research, community structure vegetation sampling methods to determine the composition, structure and type of vegetation and the three-point difference in the communities that location. For quantitative analysis used kuadran method. The results showed that the rural residential land is more diverse than the wetland and coffee plantation. In general it can be concluded that involvement in land management can change the community, the level of diversity and dominance of plants.Keywords : DAS, level of biodiversity, community structure vegetation sampling methods
Potensi Alocasia macrorhiza Sebagai Fitoremediator Logam Kromium Wahyu Surakusumah; Tina Safaria Nilawati; Rizka Khairunisa
Jurnal Ilmu Alam dan Lingkungan Vol. 11 No. 2 (2020): Jurnal Ilmu Alam dan Lingkungan
Publisher : Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (446.644 KB) | DOI: 10.20956/jal.v11i2.10181

Abstract

Chromium and its compounds are widely used by several industries as raw material. Chromium when polluting the soil can have adverse effects on the environment and humans. One technique that can be used to remediate the quality of soil contaminated by chromium is the phytoremediation method. The purpose of this study was to identify the potential of Alocasia macrorrhiza as a phytoremediator chromium agent. The research was conducted in two stages consisting of media optimization stage and phytoremediation parameter measurement stage. The parameters measured consisted of plant biomass, chlorophyll content, physiological responses, factor translocation, factor biconcentration and factor tolerance. The results showed that Alocasia macrorrhiza has the potential as a phytoremediation agent for chromium-contaminated soils with concentrations less than 401 ± 0.02 ppm, has the ability to reduce chromium content in soils by 37.94% and the mechanism of metal chromium absorption through rhizofiltration.
EFEKTIVITAS BIOKOAGULAN Vicia faba DALAM MEMPERBAIKI LIMBAH CAIR PULP DAN KERTAS Miranti Ariyani; Saefudin Saefudin; Tina Safaria Nilawati
JURNAL ILMIAH SAINS Volume 14 Nomor 1, April 2014
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (216.519 KB) | DOI: 10.35799/jis.14.1.2014.4453

Abstract

EFEKTIVITAS BIOKOAGULAN Vicia faba DALAM MEMPERBAIKI LIMBAH CAIR PULP DAN KERTAS ABSTRAK Telah dilakukan penelitian mengenai efektivitas kacang babi Vicia faba sebagai biokoagulan dalam memperbaiki sifat fisik dan kimiawi limbah cair industri pulp dan kertas. Penelitian ini bertujuan untuk mengetahui kemampuan dan konsentrasi Vicia faba yang optimum dalam memperbaiki sifat fisik kimiawi limbah cair industri pulp dan kertas. Sifat fisik dan kimia yang diteliti mencakup turbiditas, total padatan tersuspensi (TSS) limbah, kandungan kesadahan dan Chemical Oxygen Demand (COD) limbah. Rancangan penelitian yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL), dengan lima taraf konsentrasi yaitu 0,02%; 0,04%; 0,06%; 0,08% dan 0,1% (v/v) masing-masing dengan lima kali pengulangan. Hasil penelitian menunjukkan bahwa konsentrasi suspensi Vicia faba sebanyak 0,1% mampu menurunkan turbiditas limbah hingga mencapai 98,5% dan TSS limbah hingga mencapai 74,8%. Untuk parameter kimiawi, pada konsentrasi tersebut mampu menurunkan kesadahan limbah hingga 41,6%, dan kandungan COD limbah mencapai 60,6%. Kata kunci : Vicia faba, biokoagulan, limbah cair industri pulp dan kertas EFECTIVITY OF Vicia faba AS BIOCOAGULANT FOR PULP AND PAPER WASTE WATER ABSTRACT The Study about Efectivity of broad bean (Vicia faba) as a biocoagulant for pulp and paper mill waste water were conducted. Coagulation-flocculation is an important process in wastewater treatment that are used to remove colloid and suspended particles. The objective of this research was to determine the ability and the optimum concentration of Vicia faba. The observed  parameters during this research were Turbidity, Total Suspended Solid, Total Hardness and Chemical Oxygen Demand. The study was conducted using Randomize Complete Design with five replications and five level concentrations (0,02%; 0,04%; 0,06%; 0,08%; 0,1%). The data show  that the optimum concentration of Vicia faba was around 0,1%. Vicia faba at concentration 0,1% effectively removes turbidity over 98,5%, 74,8%, for Total Suspended Solid, 60,6% of Chemical Oxygen Demand and 41,6% for total hardness. Keywords: Vicia faba, biocoagulant, pulp and paper mill waste water
The effect of the pre-laboratory journal on the evaluating and designing scientific inquiry skills and socio-emotional of high school students Nurul Melani; Tina Safaria Nilawati; Tri Suwandi
Assimilation: Indonesian Journal of Biology Education Vol 6, No 1 (2023): March 2023
Publisher : Department of Biology Education, Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/aijbe.v6i1.56524

Abstract

After over two years of the COVID-19 pandemic, learning policies demands adjustments from teachers and students, especially in practicum and scientific inquiry. To better prepare students for practicum, creating pre-laboratory journals is one approach. This study aimed to assess how pre-laboratory journals impact the development of scientific inquiry skills and socio-emotional growth in high school students. It used a quasi-experimental design with pretest-posttest control groups and selected participants through cluster random sampling. This study involved 70 students of 11th grade students consisting of 35 students of control class and 35 students of experimental class at Senior High School 1 Cisarua, West Bandung. The instrument used include five test that assessed and designed scientific inquiry skills related to the human excretory system, as part of the scientific literacy framework. The results revealed significant differences in the scientific inquiry skills between high school students in the experimental and control classes (p-value 0.00 0.05). The control class showed a moderate average improvement (N-gain of 0.53), while the experimental class exhibited a high average improvement (N-gain of 0.71). the control group was more anxious than the experimental group. Therefore, using pre-lab journals significantly improved both high school students' scientific skills and emotional well-being.
Co-Authors Afri Irawan Amelia Qodaryanti Annisa Setya Rini Bambang Supriatno Hertien Koosbandiah Surtikanti Miranti Ariyani Nurul Melani Rizka Khairunisa Saefudin Saefudin Saefudin Saefudin Tri Suwandi Wahyu Surakusumah