Abstrak                                                                    Penelitian ini bertujuan untuk menganalisis literasi sains peserta didik SMA pada materi fluida dinamis. Penelitian ini dilaksanakan di SMA Negeri 3 Nganjuk. Teknik pengambilan sampel dalam penelitian ini yakni dengan cara cluster random sampling. Sampel penelitian ini berjumlah 36 peserta didik kelas XII MIPA 1. Teknik pengumpulan data dalam penelitian ini berupa wawancara, tes, dan angket yang diberikan kepada peserta didik. Analisis data yang digunakan dalam penelitian ini berupa penggunaan persentase ketercapaian literasi sains fisika dalam domain kompetensi. Hasil penelitian ini menunjukkan bahwa kemampuan literasi sains peserta didik SMA Negeri 3 Nganjuk masih tergolong rendah. Adapun persentase yang didapatkan setiap kompetensi yakni kompetensi menjelaskan fenomena secara ilmiah sebesar 44 % berkategori rendah, mengevaluasi dan merancang penemuan ilmiah sebesar 47 % berkategori rendah, dan menginterpretasi data dan bukti ilmiah sebesar 56 % berkategori rendah. Kesimpulan dari penelitian ini adalah literasi sains peserta didik SMA pada materi fluida dinamis termasuk dalam kategori rendah. Implikasi dari penelitian ini dapat memberikan informasi terkait kemampuan literasi sains peserta didik SMA pada materi fluida dinamis sesuai dengan kompetensi yang telah disajikan.   Kata Kunci: Literasi sains, Fluida dinamis, Peserta didik SMA

Two new isoprenylated benzofuran 3-ones, airlanggin A (1) and B (2) along with two known xanthones, ananixanthone (3) and trapezifolixanthone (4) were isolated from the stem bark of Calophyllum soulattri. Structures of all the compounds were elucidated using extensive spectroscopic methods, including UV, IR, HRESIMS, 1D and 2D NMR. Compounds 1-4 were evaluated for their cytotoxicity against P-388 cells, showing that compound 3 was the most active with IC 0.68 μg/mL and compound 1 showed moderate activity with IC 5.80 μg/mL.

Pada abad 21 media pembelajaran dituntut berbasis teknologi untuk meningkatkan mutu pembelajaran, salah satu upaya yang dilakukan yaitu membuat buku yang disajikan dalam bentuk elektronik atau dikenal dengan Electronic Book (E-book). Pendekatan belajar STEM di dalamnya mencakup pembelajaran yang diajarkan bertumpu pada permasalahan yang muncul di kehidupan sehari-hari, STEM memandu siswa melakukan proses sains dengan melakukan kegiatan eksperimental. Peserta didik dituntut untuk belajar mandiri, dan memiliki kemampuan literasi sains dengan memanfaatkan sumber daya alam untuk menyeimbangkan interaksi makluk hidup, sehingga penting bagi peserta didik memiliki kemampuan literasi sains yang dapat membantu mereka untuk menganalisis dan menyelesaikan permasalahan yang berkaitan dengan Science, Technology, Engineering, and Math. Kemampuan Literasi Sains dapat dilatihkan dengan buku ajar yang diterapkan disekolah. Penelitian ini memiliki tujuan yaitu menghasilkan E-book. E-book berbasis STEM pada materi ekosistem untuk melatihkan kemampuan Literasi Sains siswa yang layak secara teoritis dan empiris. Pengembangan E-book ini menggunakan model 4D (Define, Design, Develop, Disseminate), tanpa tahap disseminate serta diuji cobakan terbatas pada 10 peserta didik kelas X IPA SMA di SMAN 1 WARU. Kelayakan teoritis diperoleh dari hasil validasi E-book yang dilakukan oleh dosen ahli materi, dosen ahli Pendidikan, dan guru Biologi SMA menggunakan instrumen validasi. Kelayakan empiris atau kepraktisan diperoleh dari analisis respon peserta didik menggunakan angket respon peserta didik. Data hasil validitas dan kepraktisan penelitian ini dianalisis secara deskriptif kuantitatif. Hasil dari penelitian ini yaitu E-book berbasis STEM pada materi ekosistem untuk melatihkan kemampuan Literasi Sains siswa yang telah dinyatakan layak secara teoritis dan empiris. Kelayakan teoritis E-book mendapatkan hasil rata-rata persentase 98,92% dengan kategori sangat valid. Kelayakan empiris E-book mendapatkan hasil rata-rata persentase 99,27% dengan kategori sangat positif.Kata Kunci: E-book, STEM (Science, Technology, Engineering, and Math), Ekosistem, Literasi Sains.

The effect of lead (Pb) pollution on water clover resistance was determined by the Pb distribution and the percentage of free amino acids in plant tissues. Water clover plant from Surabaya, Indonesia was collected and plants of equal size were grown hydroponically. They were exposed into 0, 1, 5, 10 mgL -1 of Pb concentration for 10, 20, and 30 days. The experiment was a randomized completely block design with 3 replications. The Pb concentration was measured by inductively coupled plasma (ICP) and the free amino acid was analyzed by HPLC (High-Pressure Liquid Chromatography). The Pb concentration in plant organs and its free amino acids content indicated that water clover plant was resistance on Pb accumulation and affected their growth which potential for phytoremediation. The highest concentration of Pb was found in root tissue, followed by stem and leaf tissues. These findings indicated the respond of water clover plants resist on Pb that determined by the increased percentage of free amino acids and phytochelatins such as glutamic acid, cysteine, glycine, and proline.

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A new isoprenylated 4-phenylcoumarin derivative, mesucalophylloidin (1) along with three known compounds, mammea A/BA cyclo F (2), calolongic acid (3) and isocalolongic acid (4) were isolated from the stem bark of Mesua calophylloides (Ridl.) Kosterm. Structures of all the compounds were elucidated using extensive spectroscopic methods, including UV, IR, HRESIMS, 1D and 2D NMR. Compounds 1-4 were evaluated for their cytotoxicity against P-388 cells, showing that compound 1 gave moderate activity with IC 6.26 μg/mL.

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Applications of pesticides on crop land have been used by soybean land farmer in Jombang, Lamongan and Probolinggo in order to control pest. Pesticide application of soybean land influence physic and chemistry soil, against growth of plant furthermore. This study aimed to identify soil physic and chemistry characteristic on pesticide application of soybean land. This study used sampling purposive method on soybean land in Jombang, Lamongan and Probolinggo District. The data were taken by purposive on pesticide application between pre and post soybean cultivation. Parameters included of soil physic (soil mass, soil porosity, water level, soil texture and determination of soil class), soil chemistry (composition of C-Organic, Total of N, Ratio C/N, P and organic matter). The data were analyzed quantitative and qualitative descriptive. Data analysis showed pesticide application of soybean land in Jombang, Lamongan and Probolinggo included intermediate category with composition 1,19-1,25 g cm -3 and contain of particle type were 2,30-2,38 g cm -3 , soil porosity accord to ideal land criteria 46,08-49,30%, water level were higher than free capacity limit (0,33 pF) with classification water available, soil texture on T2 class were slightly smooth, at every location C-Organic compositions included low category (0,58-0,94%), low total of N (0,09-0,15%), C/N ratio in low category up to 6-9, P total were varied, from low (J3 dan J2) were 11,90 mgkg -1 and 11,94 mgkg -1 , intermediate (J1, L3, P2 dan P3) up to 19,72-22,59 mgkg -1 , another three locations L1, L2, and P1 included of high category, were 36,82-38,48 mgkg -1 . Organic matters composition.