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Analysis of Melinjo Seed Extract as Corrosion Bioinhibitor for Ferrous Metals
Get PDFThe corrosion of ferrous metals is a serious issue that can reduce material durability and lead to significant economic losses. Melinjo seed extract was selected for investigation due to its potential as a corrosion inhibitor, attributed to the presence of tannin compounds capable of forming complexes that coat metal surfaces. This research aims to explore the use of melinjo seed extract as a bioinhibitor for iron, providing an effective and environmentally friendly solution. The extraction of melinjo seeds was performed using the maceration method. The melinjo seed extract was mixed with 70% ethanol to obtain an inhibitor solution. The study evaluated the corrosion rate and inhibition efficiency of iron immersed in melinjo seed extract solution at varying concentration. The results showed that melinjo seed extract has the potential to inhibit corrosion in iron. A higher concentration of melinjo seed extract correlated with a lower corrosion rate. The highest corrosion rate was 6.7x10-2 g/cm² day at 0% concentration. The lowest corrosion rate was 1.6x10-2 g/cm² day at a 15% concentration of melinjo seed extract. The optimum inhibition efficiency was achieved at the 15% concentration, which amounted to 76%. These results indicate that melinjo seed extract is an effective bioinhibitor for ferrous metal corrosion
PENYULUHAN DALAM UPAYA PENCEGAHAN COVID-19 DENGAN PENYEMPROTAN DISINFEKTAN DAN PENERAPAN ATURAN KESEHATAN DI DESA PAKUTANDANG, KECAMATAN CIPARAY, KABUPATEN BANDUNG
Get PDFCorona Virus Disease 2019 (COVID-19) is a new type of disease that has never been identified in humans. This disease infects the respiratory tract and is usually transmitted through close physical contact and respiratory droplets. This community service activity aims to increase knowledge and insight among participants regarding the importance of maintaining and following health regulations to minimize and stop the spread of COVID-19 and realize changes in healthy behavior during the pandemic. The methods used are counseling, simulation, and evaluation methods. Before carrying out this activity, socialization was carried out first by visiting the Pakutandang Village office, meeting and discussing with the Pakutandang Village Head regarding the needs that could be provided to minimize and stop the spread of COVID-19, and asking for permission to carry out community service activities. The results of the service show that the service activities went smoothly. Participants participate actively and collaboratively in discussion and question-and-answer activities. This service activity increases and broadens the knowledge and perspectives of the participants, including lecturers at Bale Bandung University, village heads, and government officials from the Pakutandang Village Office, students at the Faculty of Agriculture, Bale Bandung University, residents of Pakutandang Village and the COVID-19 task force in Ciparay District. Thus, the participants understood the importance of following health regulations and continuous spraying of disinfectants in the school and home environment around Pakutandang Village in implementing healthy behavior changes during the pandemic. The activity results will enable the implementation of good habits in complying with health protocols in the school and home environment, especially in Pakutandang Village, Ciparay District
Pengaruh Pupuk NPK dan ZPT Air Kelapa Terhadap Hasil Tanaman Pakcoy (Brassica rapa L.)
Get PDFPakchoy or Brassica rapa L. is called a plant with a distinctive taste and high nutritional content. Pakchoy productivity is still experiencing a decline and is inversely proportional to the increase in demand for pakchoy products. The research was carried out with the aim of finding out the effect of applying NPK fertilizer and coconut water PGR on the yield of pak choy plants. This research used factorial completely randomized design with 2 factors namely NPK fertilizer doses (0 kg/ha; 150 kg/ha; 300 kg/ha; 450 kg/ha) and coconut water PGR concentrations (0%; 25%; 50%; 75 %). The significant interaction effect is in the leaf chlorophyll variable with the highest value at the NPK fertilizer dose of 300 kg/ha and the PGR concentration of 0% coconut water was 43.2 per mm2. The significant interaction effect was also shown in the dry weight variable with the highest value at the NPK fertilizer dose of 450 kg/ha and the PGR concentration of 0% coconut water of 14.5 g. NPK fertilizer has significant and very significant effect on the research variables with the best treatment of 450 kg/ha. The PGR of coconut water treatment had no significant effect on the research variables, except for the variable number of leaves with the highest average at a concentration of 0%.
Pakcoy atau Brassica rapa L. disebut sebagai tanaman dengan cita rasa yang khas dan kandungan nutrisi tinggi. Produktivitas pakcoy masih mengalami penurunan dan berbanding terbalik dengan peningkatan permintaan produk pakcoy. Penelitian dilakukam dengan tujuan untuk mengetahui pengaruh aplikasi pupuk NPK dan ZPT air kelapa terhadap hasil tanaman pakcoy. Penelitian ini menggunakan rancangan faktorial RAL dengan 2 faktor berupa dosis pupuk NPK (0 kg/ha; 150 kg/ha; 300 kg/ha; 450 kg/ha) dan konsentrasi ZPT air kelapa (0%; 25%; 50%; 75%). Pengaruh interaksi nyata pada variabel klorofil daun dengan nilai tertinggi pada dosis pupuk NPK 300 kg/ha dan konsentrasi ZPT air kelapa 0% sebesar 43,2 per mm2. Pengaruh interaksi nyata juga ditunjukkan pada variabel berat kering dengan nilai tertinggi pada dosis pupuk NPK 450 kg/ha dan konsentrasi ZPT air kelapa 0% sebesar 14,5 g. Pupuk NPK berpengaruh nyata dan sangat nyata terhadap variabel penelitian dengan perlakuan terbaik 450 kg/ha. Perlakuan ZPT air kelapa tidak berpengaruh nyata terhadap variabel penelitian, kecuali terhadap variabel jumlah daun dengan rata-rata tertinggi pada konsentrasi 0%
Study on The Potential Contamination of Heavy Metals: Analysis of Cr and Pb Contents From Power Plants in Indonesia Using the Batch Leaching Method
Get PDFCoal ash, stemming from the combustion process in power plants, emerges as a potential pollution source due to its metal content. Recognized for housing various metals with environmental contamination potential, this study meticulously delves into the metal analysis of chromium (Cr) and lead (Pb) within four distinct samples of fly ash (FA) and bottom ash (BA) sourced from diverse coal-fired power plants across Indonesia. Employing the batch leaching method, the coal ash samples (FABA) underwent a 6-hour immersion in deionized water, replicating environmental scenarios akin to rainwater interaction with coal ash at disposal sites. XRF analysis scrutinized the chemical composition of each sample, while the leaching filtrate underwent analysis via pH meter and AAS to ascertain pH values and the concentrations of Pb and Cr. Results unveiled a substantial pH variation in the leachate, fluctuating from the initial deionized water pH of 7.00 to a range between 6.86 and 9.18. Notably, subsequent leaching indicated undetectable concentrations of Pb in all samples, with most exhibiting low Cr concentrations post-leaching, except for FA-2, FA-4, and BA-4, which displayed modest Cr concentrations. The scarcity or low concentrations of Pb and Cr post-leaching suggest an efficacious process inhibiting heavy metal release. This study offers profound insights into the chemical intricacies of coal ash, underlining its potential environmental ramifications. The absence of detectable heavy metal concentrations post-leaching underscores a minimal risk of environmental pollution, underscoring the imperative to comprehend the chemical reactions intrinsic to the leaching process for optimal waste management strategies
PENGARUH PROMOSI, PERSEPSI KEMUDAHAN PENGGUNAAN DAN HARGA TERHADAP KEPUTUSAN PEMBELIAN JASA TRANSPORTASI GO-JEK (Studi Kasus pada Mahasiswa Universitas Nusa Bangsa) : INFLUENCE OF PROMOTION, PERCEPTION OF EASE OF USE AND PRICE ON GO-JEK TRANSPORTATION SERVICE PURCHASE DECISIONS (Case Study in Students of Nusa Bangsa University)
Get PDFPenelitian ini bertujuan untuk menguji dan menganalisis pengaruh promosi, persepsi kemudahan penggunaan, dan harga terhadap keputusan pembelian jasa transportasi go-jek studi kasus pada mahasiswa Universitas Nusa Bangsa. Data yang digunakan dalam penelitian ini adalah data primer yang diperoleh langsung dari mahasiswa Universitas Nusa Bangsa yang diambil dengan teknik kuesioner. Hasil penelitian menunjukkan bahwa secara parsial persepsi kemudahan penggunaan dan harga berpengaruh namun promosi tidak berpengaruh terhadap keputusan pembelian jasa transportasi go-jek studi kasus pada mahasiswa Universitas Nusa Bangsa, sedangkan secara simultan promosi, persepsi kemudahan penggunaan, dan harga berpengaruh positif dan signifikan
PEMANFAATAN KOTORAN TERNAK KAMBING SEBAGAI PUPUK ORGANIK CAIR DI DESA KALONG LIUD
Get PDFThe decrease in crop yields was caused by dry soil quality due to prolonged drought and excessive inorganic fertilizers in Kalong Liud village that were not adapted to plant needs, which could lead to a decrease in soil productivity. On the other hand, livestock waste (goat manure) that has not been managed optimally, often faced by livestock breeders and farmers, has good potential to help increase soil fertility on agricultural land at a reasonably low cost. The proposed solution to this problem is to switch to environmentally friendly organic fertilizer because it reduces the use of chemical substances. One of them is the use of goat manure, which contains high levels of nutrients such as phosphorus (P), nitrogen (N), and potassium (K). This community service activity aims to increase farmers' understanding that the use of organic fertilizer is a solution to overcome the problem of poor soil quality due to drought and excessive use of chemical fertilizers, as well as providing skills to farmers and breeders in Kalong Liud village in making liquid organic fertilizer from goat droppings. The method used includes the first stage of determining targets and implementing activities. The second stage of community outreach, Focus Group Discussion (FGD) and evaluation uses the test method, namely, comparing the pre-test and post-test results. The first stage of activities is determining targets, including surveys, outreach with breeders and farmers, observation, licensing, and activity planning, and then manufacturing liquid organic fertilizer. The second stage of activities carried out outreach with two topics: outreach to the community, discussions with the formed farmer groups, and evaluation through filling out questionnaires. After conducting community outreach and farmer group discussions, the results of this activity were that they understood how to make liquid organic fertilizer from goat manure and the dangers of using excess inorganic fertilizer on plants. After joint practice, the farmer group's understanding of liquid organic fertilizer obtained a post-test score of 98% of people who understood this program
KEANEKARAGAMAN JENIS TUMBUHAN BAWAH BERPOTENSI OBAT DI KAWASAN GUNUNG TILU KABUPATEN KUNINGAN JAWA BARAT
Get PDFUndergrowth is a type of basic vegetation found under forest stands except for forest tree regeneration, which includes grasses, herbs and shrubs. Undergrowth plants have a primary function in conserving soil and water. This is because the undergrowth has a large root system that produces dense clumps and is able to prevent soil erosion, as a protector of the soil from raindrops and runoff, also plays a role in increasing organic matter in the soil as green manure and mulch. Utilization of undergrowth plants as a source of medicines has an important role and is an alternative for the community to maintain health and treat a disease. The purpose of this study was to determine the diversity of undergrowth plants and to identify undergrowth plants with medicinal potential as a source of information for the community and area managers. The method used is the transect method/checkered line. Sampling plots were taken in 3 routes, namely the Citambelang, Ebeg-ebeg, and Bakukung routes. Each path consists of 9 sample plots. The results of the undergrowth inventory were then calculated the Important Value Index (IVI) and Species Diversity Index (H' The results showed that there were 44 types of undergrowth found in the Gunung Tilu area from 31 families with a total of 668 individuals. The largest IVI was found in cakar ayam (Selaginella doerderleinii) with a value of 22.64 and the smallest IVI was for kemukus (Piper cubeba) and meniran (Phyllanthus urinaria) with a value of 0.88. For undergrowth plants that have medicinal potential, 28 species from 23 families and 521 individuals were found. The diversity index in undergrowth in the Mount Tilu area is categorized as low with an index value (H'<1) which is 0.32. This information is very important for future management of the Mount Tilu forest area
KINERJA KEUANGAN PEMERINTAH DAERAH KOTA BOGOR TAHUN 2011-2020 LOCAL GOVERNMENT FINANCIAL PERFORMANCE BOGOR CITY 2011-2020
Get PDFPenelitian ini bertujuan untuk mengetahui Kinerja Keuangan Daerah Pemerintah Kota Bogor Tahun 2011-2020 ditinjau dari rasio keuangan dan faktor-faktor yang mempengaruhi Kinerja Keuangan Daerah. Penelitian ini merupakan jenis penelitian deskriptif kuantitatif. Data dalam penelitian ini merupakan data sekunder yang diperoleh dari Badan Pusat Statistik Kota Bogor. Metode analisis data yang digunakan adalah analisis rasio dan analisis deskriptif, analisis regresi linier berganda, uji asumsi klasik serta pengujian hipotesis. Hasil analisis kinerja keuangan, ditinjau dari rasio: (1) Rasio Kemandirian Keuangan Daerah (RKKD) dalam kategori Sedang, dan pola hubungan Partisipatif. (2) Rasio Tingkat Ketergantungan Keuangan Daerah (RTKKD) dengan kategori Sangat Tinggi. (3) Rasio Tingkat Derajat Desentralisasi Fiskal Keuangan Daerah (RTDDFKD) dengan kategori Cukup. (4) Rasio Efektifitas terhadap PAD (REPAD) dengan kriteria Sangat Efektif. (5) Rasio Efisiensi Keuangan Daerah (REKD) dengan kriteria Tidak Efisien. Hasil analisis ditinjau dari faktor-faktor yang mempengaruhi kinerja keuangan daerah. Variabel PAD secara parsial berpengaruh positif signifikan terhadap Kinerja Keuangan Daerah Pemerintah Kota Bogor. Dana Perimbangan secara parsial berpengaruh negatif signifikan terhadap Kinerja Keuangan Daerah Pemerintah Kota Bogor. Variabel PAD dan Dana Perimbangan secara simultan berpengaruh signifikan terhadap Kinerja Keuangan Daerah Pemerintah Kota Bogor. Hasil penelitian ini membawa implikasi bagi Pemerintah Kota Bogor guna melakukan langkah-langkah strategis dalam upaya mengoptimalkan penerimaan dari potensi pendapatannya yang telah ada.
 
PENYULUHAN PENENTUAN KESUBURAN TANAH DI LAPANGAN DAN HASIL ANALISIS LABORATORIUM DALAM MENENTUKAN KUALITAS TANAH DI DESA KERSAMENAK, TAROGONG KIDUL, GARUT
No full textThe decline in rice yields is a problem that is often experienced by farmers. The problem had experienced by the Mukti Tani III Farmer Group in Kersamenak Village, Tarogong Kidul District, Garut Regency was decrease rice production due to decreased soil quality and excessive use of fertilizers that are not adapted to plant needs. The aim of this activity was introduced and increased farmers' understood of how to determined soil fertility in the field and identified the results of soil analysis in the laboratory in determining soil quality, how to apply soil fertility determination methods in the field, and soil identifiers in the category of healthy, moderate or dificiency. So that the need for fertilizer could be determined according to the needs of the plant. The methods used are counseling, discussion, and evaluation. Activities are carried out in several stages. The first stage was coordinating and socializing with the Kersamenak Village government and conducting Focus Group Discussion (FGD) activities and filling out the pre test. The second stage is discussion (question and answer), and the third stage is evaluation through filling out the post test. The results of the evaluation showed that the technique for determining soil fertility in the field and the results of soil analysis in the laboratory became a solution for the Mukti Tani III Farmers Group in regulating the application of fertilizer so that it does not add too much fertilizer to the soil, so that rice plant growth is more optimal. From the results of the pre-test and post-test questionnaires, there was an average increase in general knowledge about how to determine soil fertility by 21.72%. Knowledge of how to determine soil fertility in the field increased 39.13% and knowledge of how to determine soil fertility in the laboratory increased 26.09%. This shows that the extension activities that have been carried out have had a positive impact in increasing farmer knowledge about how to determine soil fertility in the field and identification the results of analysis in the laboratory to improve soil quality.
Keywords: soil fertility, productivity, physical properties, chemical properties of soil
Abstrak
Penurunan produksi padi merupakan masalah yang sering dihadapi petani. Permasalahan kelompok tani Mukti Tani III di Desa Kersamenak, Kecamatan Tarogong Kidul adalah penurunan hasil padi akibat kualitas tanah serta penggunaan pupuk berlebihan yang tidak disesuaikan dengan kebutuhan tanaman. Tujuan pengabdian kepada masyarakat ini adalah untuk mengenalkan dan meningkatkan pemahaman petani tentang cara menentukan kesuburan tanah di lapangan dan mengidentifikasi hasil analisis tanah di laboratorium untuk menentukan kualitas tanah. Metode yang dilakukan adalah penyuluhan dengan ceramah, Focus Group Discussion FGD, dan evaluasi dengan metode tes, yaitu membandingkan hasil pre-test dan post-test. Kegiatan tahap pertama, melakukan koordinasi dan sosialisasi dengan pemerintah Desa Kersamenak, melakukan FGD, dan pengisian kuesioner awal. Tahap kedua adalah diskusi, dan tahap ketiga evaluasi melalui pengisian kuesioner akhir. Hasil evaluasi menunjukkan peserta memahami cara menentukan kesuburan tanah di lapangan dan cara mengidentifikasi hasil analisis tanah di laboratorium. Pemahaman peserta tentang cara menentukan kesuburan tanah secara langsung dan tidak langsung meningkat, dengan nilai post test untuk pengetahuan umum meningkat sebesar 21,72%. Pengetahuan tentang cara menentukan kesuburan tanah di lapangan meningkat 39,13%, dan pengetahuan tentang cara menentukan kesuburan tanah di laboratorium meningkat 26,09%.
Kata Kunci: kesuburan tanah, produktivitas, sifat fisika, sifat kimia tanah
PENGEMBANGAN KOMPETENSI GURU MELALUI SEMINAR METODE DAN MEDIA PEMBELAJARAN PAI DI MADRASAH DINIYAH AL-IHYA KECAMATAN BOGOR BARAT, KOTA BOGOR
Get PDFThe development of learning methods and media is very important in learning in schools or madrasas, learning will be said to be effective if you choose the right learning methods and media because it can facilitate teaching and learning activities, especially in learning Islamic Religious Education so that learning objectives are achieved. To improve competence in learning at Madrasah Diniyah Al Ihya, our team of lecturers from STIT Insan Kamil Bogor provides abdimas counseling activities on the development of PAI learning methods and media, as alternative solutions to existing problems. The purpose of this community service activity is to provide counseling regarding alternatives to several learning models and after understanding the various models and learning methods presented, Madrasah Diniyah Al Ihya teachers are expected to be able to teach with various alternative methods so that learning objectives can be achieved if problems occur, especially regarding interests and student interest. The research method used is a qualitative method, namely by collecting data in the form of surveys, direct observations and counseling. The results of this study are the increasing competence of educators in the form of knowledge and understanding of the Majlis Al-Ihya congregation in the development of PAI learning methods and the skills of the congregation in developing PAI learning methods are increasing.
Keywords: Islamic Religious Education, methods, learning media
Abstrak
Pengembangan metode dan media pembelajaran sangatlah penting dilakukan dalam suatu pembelajaran di sekolah maupun madrasah. Pembelajaran dinyatakan efektif jika penggunaan metode dan media pembelajaran yang digunakan sesuai untuk mata pelajaran Pendidikan Agama Islam (PAI), sehingga tujuan pembelajaran akan tercapai. Tim dosen STIT Insan Kamil Bogor telah memberikan kegiatan seminar abdimas tentang pengembangan kompetensi guru melalui seminar metode dan media pembelajaran PAI dengan tujuan para pengajar dapat meningkatkan kompetensi pembelajaran di Madrasah Diniyah Al Ihya untuk mengatasi permasalahan mengenai minat dan ketertarikan anak didik. Pada kegiatan pengabdian kepada masyarakat di Madrasah Diniyah Al Ihya menggunakan metode kualitatif dengan cara mengumpulkan data berupa survei, pengamatan langsung dan seminar. Pada kegiatan pengabdian kepada masyarakat ini, hasil pengamatan melalui metode survei yang dilakukan oleh pelaku kegiatan menunjukkan hasil dengan bertambahnya pengetahuan dan meningkatnya kompetensi pendidik berupa pemahaman dalam pengembangan metode pembelajaran PAI, sehingga metode dan media pembelajaran ini efektif untuk digunakan di pembelajaran khususnya di Madrasah Diniyah Al Ihya.
Kata Kunci: Pendidikan Agama Islam (PAI), metode, media pembelajara