14 research outputs found
PEMBERDAYAAN MASYARAKAT PESISIR MELALUI PELATIHAN ECOPRINT MENGGUNAKAN TUMBUHAN LOKAL
Abstrak: Masyarakat pesisir Rempang Cate umumnya berprofesi sebagai nelayan. Kaum perempuan lebih banyak di rumah, dan sejak pandemi berlangsung, tidak memiliki aktivitas khusus di siang dan sore hari. Secara umum, kondisi perekonomian masyarakat Rempang Cate berada pada kategori golongan masyarakat menengah ke bawah yang perlu mendapat perhatian untuk dapat memberdayakan diri mereka, sehingga dapat meningkatkan taraf ekonomi keluarga pada umumnya. Kegiatan ini selain bertujuan untuk menambah pengetahuan tentang zat warna alam dan keterampilan dalam membuat kain ecoprint, juga diharapkan dapat menjadi peluang usaha bagi penduduk setempat, utamanya kaum ibu. Kegiatan diawali dengan demonstrasi yang dilakukan oleh pemateri, kemudian dilanjutkan dengan workshop yang dilakukan oleh peserta secara berkelompok. Kegiatan pengabdian masyarakat ini dilaksanakan pada bulan November 2022 yang bertempat di RW 1 Desa Rempang Cate Kecamatan Galang, Kepulauan Riau. Peserta dari kegiatan ini adalah warga masyarakat yang melibatkan sebanyak 16 orang. Berdasarkan hasil angket yang telah disebarkan, dapat disimpulkan bahwa melalui kegiatan ini pengetahuan dan keterampilan peserta meningkat rata-rata 94,8%. Abstract: Rempang Cate coastal communities generally work as fishermen. Most of women are more at home, and since the pandemic took place, they have no special activities in the afternoon and evening. In general, the economic condition of the Rempang Cate community is on the middle to lower class category which needs attention in order to be able to empower themselves, so as to improve the economic standard of the family in general. Apart from aiming to increase knowledge about natural dyes and skills in making ecoprint fabrics, this activity is also expected to become a business opportunity for local residents, especially mothers. The activity began with demonstrations conducted by the presenters, then continued with workshops by participants in groups. This community service activity was carried out in November 2022 which took place in RW 1 of Rempang Cate Village, Galang District, Riau Islands. Participants in this activity were local residents involving 16 people. Based on the results of the questionnaire that was distributed, it can be concluded that through this activity the participants' knowledge and ability increased by an average of 94.5%.
DEGRADASI SENYAWA IMIDAKLOPRID SECARA ADVANCED OXIDATION PROCESSES DENGAN PENAMBAHAN TIO2-ANATASE
Imidacloprid is active compounds in Confidor 200 SL with have toxical character. Degradation of Imidacloprid in Advanced Oxidation Processes (AOPs) method by using TiO2 catalyst can reduce toxic level. Advanced Oxidation Processes (AOPs) method which is used is Sonolysis, Photolysis, and Ozonolisis. The result of sonolysis, Photolysis, and Ozonolysis measured by spectrophotometer UV-Vis with λ 400-600 nm, and than optimum degradation waste after addition of catalys measured by HPLC. The result of degradation of Imidacloprid 6 mg/L using sonolysis without addition catalys is more smallest from addition catalys which degradated in 60 minute, temperature 25±1 °C. At the same time with Photolysis methode for addition catalys we get the degradation is more biggest from addition catalys. Degradation percentage of imidacloprid without addition of TiO2-anatase reach is small from with addition of TiO2. Measure using HPLC for each methode we get more than one peak in chromatogram. It means there are other coumpounds in imidacloprid solution
Development of an Exe-Learning-based Mathematics E-module on Sequences and Series
This study aims to produce Exe-Learning-based mathematics e-modules on sequences and series material for grade XI Vocational High School (SMK) that are valid, effective, and practical. This research is development research (RD) with the ADDIE development model. The research subjects were math teachers and class XI students at SMK Putra Jaya Centre. The research instruments were expert assessment sheets, posttest questions, and teacher and student response assessment sheets. Based on the results, the e-module is categorized as very valid with an average score for content eligibility was 3.41, presentation feasibility was 3.60 and language was 3.50. Furthermore, the assessment of media experts obtained an average score on the aspect of graphic feasibility of 3.61 and media feasibility of 3.50. Testing the effectiveness of the e-module based on the results of the students' posttest obtained classical completeness results of 91% in the very effective category, while the teacher and student response questionnaire for the practicality of the e-module was 90% and 88% in the practical category. Thus, the Exe-Learning-based mathematics e-module on sequences and series material for grade XI Vocational High School students that has been developed is declared valid, effective, and practical
PEMANFAATAN RUMPUT LAUT SARGASSUM sp. SEBAGAI BIOSORBEN DALAM PENYERAPAN LIMBAH LAUNDRY
The high growth rate of the laundry industry in Batam resulted in high laundry waste generated. One way to reduce the level of pollution due to laundry waste is by absorption using biosorbent from Sargassum sp. Sargassum sp. made in powder form and activated with chitosan to maximize the absorption rate. The purpose of this study was to see the ability of sargassum sp., in reducing the content of TDS (Total Dissolved Solid), EC (Electrical Conductivity), TSS (Total Suspended Solid), and Phosphate. The method used in this research is the experimental method. Analysis of the data used is descriptive. The results obtained on measurements of pH, TDS, EC, TSS and phosphate, showed that for each measurement there was a decrease in TDS, EC, and TSS after adding sargassum sp. Both activated and not compared with before adding sargassum sp. except in the measurement of phosphate the opposite occurs. For EC the decrease ranged from 34-59%, in the TDS measurement there was a decrease in the range of 14-46%. For the measurement of TSS and phosphate, the reductions ranged from 7-99% and 4-68%, respectively. Based on LHRI Regulation No. 5 of 2014 concerning wastewater quality standards, the highest phosphate level is 2 mg/L, TSS 60 mg/L and pH ranges from 6-9, it means that phosphate and pH still meet the standard while TSS before the addition of biosorbent exceeds the standard but after being added sargassum sp. activated to meet the standard except for the unactivated.The high growth rate of the laundry industry in Batam resulted in high laundry waste generated. One way to reduce the level of pollution due to laundry waste is by absorption using biosorbent from Sargassum sp. Sargassum sp. made in powder form and activated with chitosan to maximize the absorption rate. The purpose of this study was to see the ability of sargassum sp., in reducing the content of TDS (Total Dissolved Solid), EC (Electrical Conductivity), TSS (Total Suspended Solid), and Phosphate. The method used in this research is the experimental method. Analysis of the data used is descriptive. The results obtained on measurements of pH, TDS, EC, TSS and phosphate, showed that for each measurement there was a decrease in TDS, EC, and TSS after adding sargassum sp. Both activated and not compared with before adding sargassum sp. except in the measurement of phosphate the opposite occurs. For EC the decrease ranged from 34-59%, in the TDS measurement there was a decrease in the range of 14-46%. For the measurement of TSS and phosphate, the reductions ranged from 7-99% and 4-68%, respectively. Based on LHRI Regulation No. 5 of 2014 concerning wastewater quality standards, the highest phosphate level is 2 mg/L, TSS 60 mg/L and pH ranges from 6-9, it means that phosphate and pH still meet the standard while TSS before the addition of biosorbent exceeds the standard but after being added sargassum sp. activated to meet the standard except for the unactivated
Pengembangan Modul Pembelajaran Matematika Berbasis Pendekatan Konstruktivisme Pada Materi Logaritma
Tujuan penelitian ini untuk mendeskripsikan validitas, praktikalitas dan keefektifan modul pembelajaran matematika berbasis pendekatan konstruktivisme pada materi logaritma untuk siswa kelas X Akuntansi SMK Permata Harapan Batam. Penelitian ini merupakan penelitian pengembangan dengan model pengembangan ADDIE yang meliputi Analysis yaitu tahap Analisis, Design yaitu tahap Desain, Development yaitu tahap Pengembangan, Implementation yaitu tahap Implementasi, dan Evaluation yaitu tahap Evaluasi. Instrumen yang digunakan adalah angket yang berdasarkan penilaian dari BNSP, angket respons siswa dan soal tes hasil belajar. Kualitas modul dilihat dari aspek kevalidan termasuk dalam klasifikasi sangat baik dengan rata-rata skor penilaian ahli materi sebesar 3,59 dan rata-rata skor penilaian modul oleh ahli media sebesar 3,68 pada rentang skor skala 4 sehingga didapat validasi dengan skor rata-rata 3,64 yang termasuk dalam kategori sangat baik. Dilihat dari aspek kepraktisan, modul tersebut dinyatakan praktis dengan skor rata-rata angket respons siswa yaitu 3,15 yang termasuk dalam klasifikasi baik. Sedangkan dari aspek keefektifan, modul tersebut dinyatakan efektif berdasarkan hasil post-test yang menunjukkan bahwa ketuntasan belajar siswa adalah 87% yang termasuk dalam kategori sangat baik
Kandungan Tembaga (Cu) dan Timbal (Pb) pada Lamun Enhalus accoroides dari Perairan Batam, Kepulauan Riau, Indonesia
The objective of the present study was to analyze the metal content of copper and lead in Enhalus accoroides seagrass in Batam Island waters. Samples of seagrass (E. accoroides) were collected from six locations along the western region of Batam Island then dried and performed with acid destruction. The measurements of Cu and Pb in the samples were conducted by Atomic Absorption Spectrophotometer. The result showed that there was an increasing of copper and lead contaminant level on sample E accoroides during two periods in a year. The Cu level ranged from 0.63 to 46.1 mg/kg, meanwhile, lead level ranged from 2.14 to 10.52mg/kg respectively. The highest accumulation of copper and lead were recorded on leaves, it was reached 10.81 mg/kg and 5.98mg/kg, respectively.Penelitian ini bertujuan menganalisis kandungan logam tembaga (Cu) dan timbal (Pb) pada lamun Enhalus accoroides di sepanjang perairan barat Pulau Batam. Sampel lamun dikumpulkan dari enam lokasi kemudian dikeringkan dan dilakukan destruksi dengan asam. Penentuan kadar logam tembaga dan timbal dalam sampel dilakukan dengan spektrometri serapan atom. Hasil penelitian menunjukan adanya peningkatan kadar logam Cu dan Pb pada sampel lamun E. accoroides selama 2 periode sampling dalam 1 tahun. Kadar logam Cu dan Pb pada lamun secara berturut berada pada rentang 0.63-46.1 mg/kg dan 2.14-10.52mg/kg. Akumulasi logam Cu dan Pb dalam lamun E. accoroides tertinggi pada bagian daun sebanyak 10.81 mg/kg Cu dan 5.98 mg/kg Pb.
PENGGUNAAN KATALIS ZnO-H2O2 UNTUK DEGRADASI ZAT WARNA RHODAMIN B DAN ALIZARIN-S
ABSTRACT The textile industry produce colored waste liquid that can contaminate the line water and its populations. A number of dyes are using in textile industry processes such as rhodamine-B and alizarine-S. Both of dyes are toxic for human life. In order to reduce the concentration that dyes is used the sonolysis method which have good efficiency and effective to degrade this pollutants. Sonolysis was performed using an ultrasound energy at 47 kHz. Catalyst ZnO is used to get better degradation. Rhodamine-B 2mg/L with 0.3 g ZnO addition, pH 5, temperature 40°C get 35.44% degradation after 60 minutes. If we used 3 mL H2O2 30% in the same condition the degradation up to 42.67% and with the combination of 0.3 g ZnO - 3 mL H2O2 as catalysts it got 91.99% after 90 minutes. Alizarine-S 20 mg/L with 0.5 g ZnO addition, pH 5, temperature 50°C was degraded up to 86.45% after 35 minutes. Furthermore, the degradation reached 95.79% if it used 0.5 g ZnO and 25 mL H2O2 30% at pH 5 and temperature 50°C after 35 minutes sonolysis. Keywords : rhodamine-B, alizarine-s, ZnO, H2O
Fantastic Macrofungi in Poncokusumo District, Bromo Tengger Semeru National Park (TNBTS) Area and Their Habitat Characteristics
Bromo Tengger Semeru National Park (TNBTS) is a conservation area in East Java with an abundance of biodiversity, including macrofungi. This study aims to identify the macrofungal species existing in Poncokusumo district, TNBTS area, and their habitat characteristics for a further sustainable study of fungi. This study used a purposive sampling method by opportunistic exploration. Identification of macrofungi is conducted by morphological analysis and habitat characterization. The study identified 15 macrofungal species categorized as Ascomycota and Basidiomycota, that were distinct in their habitat characteristics. The 15 macrofungal species inhabited leaf litter, wood litter, soil, and bamboo.
Pembukuan Akuntansi Sederhana Pada UMKM
Penelitian ini bertujuan untuk mengedukasi dan memberikan penyuluhan secara langsung mengenai pentingnya pembukuan yang baik dan benar dalam mencatat keuangan usaha selama satu tahun akuntansi pada UMKM yang ada di Desa Mangkurakyat. Metode yang digunakan adalah observasi dan praktik langsung ke lapangan. Hasil dari penelitian tersebut adalah pelaku UMKM dapat mengetahui bagaimana melakukan pembukuan yang baik dan benar dengan akuntansi sederhana, setelah melakukan penyuluhan dengan praktek secara langsung kini pelaku UMKM dapat mengerti dan paham bagaimana mencatat transaksi keuangan ke dalam pembukuan akuntansi sederhana, apalagi di masa transisi menuju kondisi normal kembali setelah dilanda covid 19
NILAI-NILAI MORAL DALAM NOVEL LANTAK LA KARYA BERI HANNA
Penelitian ini bertujuan untuk mendeskripsikan nilai-nilai moral dalam novel Lantak La Karya Beri Hanna. Rumusan masalah dalam penelitian ini adalah nilai-nilai moral apa saja yang terdapat dalam Novel Lantak La Karya Beri Hanna. Penelitian ini menggunakan metode kualitatif dan jenis penelitian deskriptif. Sumber data penelitian ini adalah buku novel Lantak La Karya Beri Hanna. Data dalam penelitian ini didapat dari kata-kata, frasa, dan klausa. Pengumpulan data dalam penelitian menggunakan teknik pustaka. Hasil penelitian ini adalah (1) nilai moral yang terkandung dalam hubungan antara manusia dengan dirinya sendiri, (2) nilai moral yang terkandung dalam hubungan manusia dengan sesama manusia, (3) nilai moral yang terkandung dalam hubungan antara manusia dengan alam semesta, dan (4) nilai moral yang terkandung pada hubungan antara manusia dengan tuhan. Novel Lantak La Karya Beri Hanna dapat dijadikan terobosan sebagai materi pengajaran alternatif yang memiliki tujuan untuk memberikan bantuan kepada peserta didik dalam meningkatkan kemampuan dalam mengeksplorasi, mengidentifikasi, serta memahami nilai-nilai moral yang ada pada novel. Hasil penelitian dapat dimanfaatkan sebagai sumber rujukan atau pedoman bagi peneliti lain yang ingin meneliti pada penelitian yang sama dengan kajian yang sama pula atau dengan kajian yang berbeda serta dapat dijadikan referensi bacaan yang akan membantu mereka dalam pemahaman dan penafsiran nilainilai moral yang relevan pada siatusi kehidupan sehari-hari.Kata kunci: nilai moral, nove