Fitoremediasi Lahan Tercemar Di Kawasan Industri Medan Dengan Tanaman Hias

The development of industrial area in Medan City, North Sumatera impact for the increasing soil polluted by heavy metal at the area. Phytoremediation is an emerging technology for cleaning up contaminated sites, which is inovatif, cost effective, safety and has aesthetic advantages and long term applicability. The important aspect to be noted was the plant should not be used for consumption crops. The goal of our research was to develop the phytoremediation technology by testing different ornamental plant planting under different concentration contaminated soil. So that the plant can use as a phytoremediator agent to recover the land condition at Medan Industrial Area. The experiments included eight ornamental crops such as: Sanseviera trifasciata, Dracaena fragrans, Diffenbachia sp., Phylodendron hederaceam, Agave sp.Codiatum variegatum, :Anthurium crystallium and Chrysalidocarpus lutescens The parameters are biomass production and heavy metal uptake by plant. The result showed that the greatest increase in biomass production contained in Diffenbachia sp. followed by Codiatum variegatum, Chrysalidocarpus lutescens, Sanseviera trifasciata and Dracaena fragrans respectively. Uptake heavy metal is higher at Codiatum variegatum (291 mg/kg) followed by Diffenbachia sp. (246 mg/kg), Chrysalidocarpus lutescens (185 mg/kg), Sanseviera trifasciata (162 mg/kg) and Dracaena fragrans (102 mg/kg)

GAS CHROMATOGRAPHY–MASS SPECTROMETRY ANALYSIS OF BIOACTIVE COMPOUNDS IN ESSENTIAL OILS OF LEAF OF EUODIA SUAVEOLENS SCHEFF

Objective: Essential oils extracted from the leaf of Euodia suaveolens have been reported. However, there is no published data on comprehensive report on the chemical constituents of the essential oils and the methods utilized to extract the essential oils from the plant. This research aimed to reveal and determine the chemical constituents of essential oils from the leaf of E. suaveolens. Methods: Essential oils of leaf of E. suaveolens were extracted by steam distillation and were analyzed utilizing Gas Chromatography-Mass Spectrometry (GC-MS) methods. Results: The GC-MS analysis revealed the presence of twenty-five different chemical constituents from the essential oils. The main chemical constituents of essential oils extracted from E. suaveolens’ leaves were as follows menthofuran (50.38 %), p-mentha-1,8-diene (14.34 %), limonen (10.99 %), evodone (5.55 %), α-curcumene (4.65 %), globulol (1.88 %), longipinenepoxide (1.66 %), and linalool (1.40 %). This present research found three compounds, namely p-mentha-1,8-diene, globulol, and longipinenepoxide that have never been reported by any researchers working with this plant. Conclusion: The results showed that E. suaveolens contains essential oils that are potential to be explored further and utilized as medicinal products against some ailments

UJICOBA PERPADUAN MEDIA TANAM COCOPEAT -TOPSOIL DAN DOSIS PUPUK SP-36 TERHADAP PERTUMBUHAN TANAMAN KEDELAI HITAM MALIKA (GLYCINE SOJA. L)

The research aims to test the media plant cocopeat-top soil as well  dose SP-36 fertilizer against growth soya bean black malika (Glycine soja.L ). To know the impact of the growth of oil palm seedlings (Elaesis guineensis Jacq.) in dose using rice husk charcoal biochar on some type of soil in pre- nursery. The research uses the Design Random Factorial  (DRF) consist of 2 factors . The first factor is a mixture of cocopeat - top soil planting media . The second one is SP-36 dose . Based on the results of the study, it can be stated that, cocopeat planting media with topsoil had no significant effect on plant height at 4, 5, 6 and 7 mst, significantly affected the number of branches aged 7 and 8 mst and plant root length, but had no significant effect on flowering age, weight of 100 seeds, and number of root nodules. The dose of SP-36 fertilizer had no significant effect on plant height at the ages of 2, 3, 8, 11, 12 and 13 mst, flowering age, weight of 100 seeds and root length, but had no significant effect on number of branches and number of root nodules. The interaction of cocopeat growing media with topsoil and the dose of SP-36 fertilizer had no significant effect on all observed parameters .The dose of SP-36 fertilizer had no significant effect on plant height at 2, 3, 8 11 and 12 mst, flowering age, weight of 100 seeds and root length, but had no significant effect on number of branches and number of root nodules

Efek CuI Terhadap Konduktivitas dan Energi Aktivasi (CuI)x(AgI )1-x (x = 0,5 - 0,9)

Pembuatan bahan konduktor padat telah dilakukan dengan cara mencampurkan CuI dan AgI. Kedua bahan dibuat dalam bentuk pelet dan dipanaskan pada suhu 300 oC selama 3 jam. Pengukuran konduktivitas (CuI)x((AgI)1-x dilakukan dengan alat LCR-meter pada frekuensi 0,1 Hz sampai 100 kHz dan sebagai fungsi suhu. Penentuan struktur kristal (CuI)x((AgI)1-x dan regangan kisi dilakukan dengan difraksi sinar-X. Hasil penelitian menunjukkan regangan kisi konduktor padat (CuI)x((AgI)1-x turun seiring dengan naiknya fraksi berat CuI. Puncak difraksi sinar-X untuk konduktor padat (CuI)x((AgI)1-x menunjukkan puncak-puncak CuI, sedangkan puncak-puncak AgI tidak tampak. Konduktivitas konduktor padat (CuI)x(AgI)1-x naik seiring dengan naiknya suhu pemanasan. Energi aktivasi naik seiring dengan bertambahnya konsentrasi CuI.

Pengembangan lembar kerja peserta didik model inkuiri terbimbing berbantuan video pada pokok bahasan teori kinetik gas untuk meningkatkan hasil belajar peserta didik kelas XI di SMAK St. Stanislaus Surabaya

Perangkat pembelajaran yang dikembangkan berupa Rencana Pelaksanaan Pembelajaran (RPP), Lembar Kerja Peserta Didik (LKPD) dan Rencana Evaluasi (RE). Perangkat pendukung LKPD berupa RPP dan RE diimplementasikan menggunakan metode penelitian Reasearch and Development dengan model ADDIE (Analysis, Design, Development or Production, Implementation or Delivery and Evaluations). Perangkat pembelajaran yang dikembangkan telah divalidasi oleh dua validator dan telah diuji cobakan pada 24 peserta didik kelas XI MIPA di SMAK Santo Stanislaus Surabaya. Pengujian perangkat pembelajaran kepada peserta didik dilaksanakan secara daring dengan menggunakan aplikasi Geoogle Meet, Geoogle Form, Whatsaps, Liveworksheet, Team Picker Wheel, dan PhET Simulation. Hasil validasi perangkat pembelajaran yang telah dikembangkan berkategori valid dengan skor rata-rata masing-masing 3,28, 3,3, dan 3,15. Hasil keterlaksanaan RPP dalam proses pembelajaran berkategori sangat baik dengan skor rata-rata sebesar 3,45. Berdasarkan keefektifan perangkat pembelajaran hasil dari pretest dan posttest peserta didik dengan skor rata-rata N-Gain sebesar 0,40, dalam kategori sedang dan hasil penilaian respon peserta didik terhadap pengembangan perangkat pembelajaran mendapatkan skor rata-rata sebesar 3,36 dengan kategori positif. Dengan demikian, dapat disimpulkan perangkat pembelajaran yang dikembangkan layak digunakan dalam pembelajaran dan dapat meningkatkan hasil belajar peserta didik di SMAK Santo Stanislaus Surabaya

PENGARUH BERBAGAI JENIS PUPUK KANDANG DAN DOSIS PUPUK UREA TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN KEDELAI HITAM (GLYCINE SOJA L.)

This study aims to determine the effect of various types of manure and urea fertilizer dosage on growth and production of black soybean (Glycine soja L.). The model used is a factorial Randomized Block Design (RAK) consisting of 2 factors. The first factor is the type of manure consisting of 3 levels, namely: K1 = Chicken manure (75 gr polybag-1), K2 = Goat manure (75 gr polybag-1) and K3 = Cow manure (75 gr polybag-1). The second factor is the dose of Urea fertilizer consisting of 3 levels, namely: U1 = 2.50 gr polybag-1, U2 = 3.75 gr polybag-1 and U3 = 7.50 gr polybag-1. Parameters observed consisted of plant height, number of branches, age of flowering, weight of 100 seeds, root length, number of root nodules. Based on the results of the study, it can be stated that the type of manure had no significant effect on plant height, number of branches, age of flowering, weight of 100 seeds, root length and number of root nodules of black soybean plants. The dose of urea fertilizer had no significant effect on plant height, number of branches and age of flowering, but significantly increased weight of 100 seeds, root length and number of root nodules. The interaction of type of manure and dose of urea fertilizer had no significant effect on all observed parameters

Postmarketing Follow-Up of a Digital Home Exercise Program for Back, Hip, and Knee Pain: Retrospective Observational Study With a Time-Series and Matched-Pair Analysis

Background: Musculoskeletal conditions are the main drivers of global disease burden and cause significant direct and indirect health care costs. Digital health applications improve the availability of and access to adequate care. The German health care system established a pathway for the approval of “Digitale Gesundheitsanwendungen” (DiGAs; Digital Health Applications) as collectively funded medical services through the “Digitale-Versorgung-Gesetz” (Digital Health Care Act) in 2019. Objective: This article presents real-world prescription data collected through the smartphone-based home exercise program “Vivira,” a fully approved DiGA, regarding its effect on self-reported pain intensity and physical inability in patients with unspecific and degenerative pain in the back, hip, and knee. Methods: This study included 3629 patients (71.8% [2607/3629] female; mean age 47 years, SD 14.2 years). The primary outcome was the self-reported pain score, which was assessed with a verbal numerical rating scale. The secondary outcomes were self-reported function scores. To analyze the primary outcome, we used a 2-sided Skillings-Mack test. For function scores, a time analysis was not feasible; therefore, we calculated matched pairs using the Wilcoxon signed-rank test. Results: Our results showed significant reductions in self-reported pain intensity after 2, 4, 8, and 12 weeks in the Skillings-Mack test (T3628=5308; P<.001). The changes were within the range of a clinically relevant improvement. Function scores showed a generally positive yet more variable response across the pain areas (back, hip, and knee). Conclusions: This study presents postmarketing observational data from one of the first DiGAs for unspecific and degenerative musculoskeletal pain. We noted significant improvements in self-reported pain intensity throughout the observation period of 12 weeks, which reached clinical relevance. Additionally, we identified a complex response pattern of the function scores assessed. Lastly, we highlighted the challenges of relevant attrition at follow-up and the potential opportunities for evaluating digital health applications. Although our findings do not have confirmatory power, they illustrate the potential benefits of digital health applications to improve the availability of and access to medical care

COMPARATIVE STUDY OF ANTIBACTERIAL ACTIVITY OF METHANOL EXTRACT OF Sinularia, Sarcophyton, AND Lobophytum FROM TULAMBEN, BALI

Softcoral has a potency as the new source of bioactive compound. This research aims to study antibacterial activity from several softcorals. Samples were identified as Sinularia, Sarcophyton and Lobophytum taken from Tulamben, Bali. Samples were extracted by maceration technique with methanol (70, 80, and 96%) and dried by rotary evaporation. Antibacterial activity of the extracts was tested by agar diffusion method to pathogenic bacteria such as Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus,and Streptococcus pyogenes. Antibacterial activity results were: Sarcophytonshowed highest activity, followed by Lobophytum and Sinularia. The most inhibited bacterium was P. aeruginosa. Methanol 80 and 90% showed similar results, while 70% resulted below them. Minimum inhibitory concentration (MIC) of Sarcophyton(96% methanol extract) to P. aeruginosa was 4% v/v.Keywords: Softcoral, antibacterial, Sinularia, Sarcophyton,Lobophytu

Efek Pemberian Sari Buah Berenuk (Crescentia cujete L.) Terhadap Berat Mencit Galur Swiss-Webster (Mus musculus)

Buah berenuk (Crescentia cujete L.) merupakan salah satu tanaman yang digunakan untuk pengobatan tradisional. Buah berenuk mengandung berbagai senyawa seperti flavonoid, yang dapat digunakan untuk meningkatkan nafsu makan. Tujuan dari penelitian ini adalah untuk mengetahui kemampuan sari dari buah berenuk (Crescentia cujete L.) dalam meningkatkan nafsu makan dari mencit (Mus musculus) galur Swiss Webster, yang diukur berdasarkan tingkat konsumsi pakan dan berat mencit. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 7 perlakuan yaitu lima dosis sari buah berenuk 20%, 40%, 60%, 80%, dan 100%, satu kontrol negatif tanpa pemberian sari buah berenuk, serta satu kontrol positif menggunakan perlakuan sari temulawak (Curcuma xantorrhiza). Hasil penelitian menunjukkan bahwa sari buah berenuk mengandung senyawa fenolik dan flavonoid. Sari buah berenuk dosis 40% mampu meningkatkan konsumsi pakan serta berat badan mencit meskipun secara analisis statistik tidak berbeda signifikan dengan dosis lain. Dari data tersebut dapat disimpulkan bahwa sari buah berenuk memiliki potensi untuk meningkatkan nafsu makan.