253 research outputs found

    Studi Pola Arus Laut Di Perairan Pantai Kabupaten Aceh Timur

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    Kabupaten Aceh Timur merupakan kabupaten yang berada di sisi timur Aceh dengan letak astronomis berada pada 4º 09\u27 21,08” - 5º 06\u27 02,16” LU dan 97º 15\u27 22,07” - 97º 34\u27 47,22” BT memiliki berbagai potensi dan permasalahan yang dihadapi hingga saat ini. Potensi wilayah pesisir tersebut antara lain berupa potensi perikanan laut dan darat, pelabuhan, pariwisata dan kawasan industri yang berada di wilayah pesisir. Permasalahan abrasi yang cukup parah mengakibatkan kerugian besar dengan rusaknya wilayah pantai dan pesisir dengan segala kehidupan yang ada diwilayah tersebut. Tujuan dari penelitian ini adalah untuk mengetahui pola arus yang dapat dijadikan sebagai referensi dalam pengelolaan lingkungan laut dan perencanaan bangunan pantai. Penelitian dilaksanakan pada tanggal 27 – 30 September 2014. Metode penelitian menggunakan metode kuantitatif. Pengambilan data arus dengan ADCP type Argounaunt-XR dengan sistem mooring. Pengolahan data pasang surut dilakukan dengan menggunakan metode Admiralty. Pemodelan pola arus menggunakan pemodelan matematis. Berdasarkan pengukuran di lapangan, perairan Aceh Timur memiliki kondisi arus yang didominasi oleh arus pasang surut. Kecepatan arus maksimum sebesar 0,647 m/s bergerak menuju arah Timur-Tenggara. Kecepatan arus minimum 0,003 m/s yang bergerak menuju ke arah Tenggara. Tipe pasang surut yang terjadi adalah pasang surut harian ganda dengan bilangan Formzahl sebesar 0,17, tinggi muka air laut rata-rata (MSL) sebesar 176, 03 cm, tinggi muka air terendah (LLWL) sebesar 82,34 cm dan tinggi muka air tertinggi (HHWL) sebesar 269,98 cm. Hasil simulasi model hidrodinamika menunjukkan bahwa arus yang terjadi pada daerah model relatif menuju arah barat laut pada kondisi surut menuju pasang dan ke arah tenggara saat pasang menuju surut

    Pengaruh Urbanisasi terhadap Konsumsi Energi dan Emisi CO2: Analisis Provinsi di Indonesia

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    Indonesia sedang mengalami fenomena urbanisasi yang pesat, pembangunan pada sektor industri pemicu terbesar dalam peningkatan urbanisasi. Bertumbuhnya populasi urban, sektor industri, dan sektor rumah tangga akan meningkatkan konsumsi energi. Selain itu, dampak dari meningkatnya konsumsi energi akan menghasilkan emisi CO2 yang tinggidimana akan berdampak pada lingkungan. Tujuan penelitian ini adalah ingin mengetahui bagaimana pengaruh antara urbanisasi terhadap konsumsi energi dan CO2. Penelitian ini menggunakan data periode 2008 sampai dengan 2012 dengan metode estimasi adalah data panel. Hasil estimasi menunjukkan bahwa urbanisasi memiliki hubungan signifikan terhadap konsumsi BBM dan total konsumsi energi, namun urbanisasi tidak signifikan terhadap konsumsi listrik dan emisi CO2. Populasi memiliki hubungan signifikan terhadap konsumsi BBM, konsumsi listrik dan total konsumsi energi serta emisi CO2. Sedangkan pertumbuhan ekonomi memiliki hubungan signifikanterhadap konsumsi BBM, konsumsi listrik, emisi CO2

    Evaluasi Pasca Huni Studio Gambar Program Studi Arsitektur Fakultas Teknik UNLAM

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    Drawing studio at Program Study of Architecture of UNLAM at this moment was felt unsupported the studying process if evaluated from the available space concerning the moving space requirement, equipment of support facility ( for example the drawing desk, desk, locker, etc.), the furniture arrangement situation regarding the human being movement circulation. This study conducted in order to get a good drawing studio condition evaluated from equipment of furniture facility, moving space requirement and the furniture arrangement situation move and location arrange the furniture situation to amenity the circulation movement of people.Data analysing will be using comparison method and rule about equipment of furniture facility, the furniture arrangement and space between furniture in the standard regulation become the reference to be compared to existing condition. Data obtained by this study was the form of qualitative data and quantitative data will be analysed qualitative in the form of studio layout drawing.Base to the conducted study hence obtained the conclusion that equipment of furniture facility was lack in number, the existing furniture arrangement of drawing studio at this moment did not support the good atmosphere needed, and existing moving space available for circulation in this time did not reach the standard regulation requirement. Overall evaluation concerning the equipment of furniture facility, the furniture arrangement, and standard moving space circulation compared to the existing moving space, and also number of student, hence obtained the conclusion that wide of drawing studio at this moment cannot served the comfortable activity needed

    Association Between Levels of Particulate Matter 2.5 (PM2.5) and Tumor Necrosis Factor-Alpha (TNF-α) in Blood of Employees at Motor Vehicle Test Center

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    Exposure to fine particles can cause chronic and acute inflammation that may change cells to be abnormal. Inflammation occurs when the human body responds to exposure to particulate matter (PM) by releasing Tumor Necrosis Factor-Alpha (TNF-α), a protein that signals inflammation. The object of the present study was to analyze the correlation between human exposure to PM and blood concentrations of TNF-α in Pusat Pengujian Kendaraan Bermotor (PKB), in Ujung Menteng and Pulogadung, in East Jakarta, Indonesia. The study included 42mechanics from PKB and 27 control participants. The independent T-test was used to assess the smoking status, obesity incidence, and age of the participants. In addition, TNF-α concentrations wereanalyzed using a quantitative sandwich enzyme immune assay (ELISA) technique and a Human TNF-α/TNFSFIA HS. The study used quantitative analysis to compare TNF-α concentration with the variables in both sample groups. Results showed a higher average concentration of TNF-α inthe blood samples of the mechanics groupthan in those of the control group (p-value < 0.05), meaning that PM2.5 exposure may increase TNF-α concentration in human blood. Keywords: Particulate Matter 2.5 (PM2.5), Tumor Necrosis Factor-Alpha (TNF-α),Inflammatio

    Particulate Matter and Subjective Respiratory Health Effect Measurements in Palembang during Forest Fire Episode in October 2015

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    Particulate matter is a mixture of solid particles and liquid droplets that can gather in the atmosphere. Wild land fires are uncontrollable land fires that consume combustible plants and emit significant amounts of carbon dioxide, methane, non-methane volatile organic compounds, nitrogen oxides, and particulates. This research was conducted to measure the fine particulate matter (PM2.5) pollution during October 2015 that was caused by a September forest fire in Palembang, one of the cities most affected by wildfires in Indonesia. Sampling was based on the United States Environmental Protection Agency (US EPA) IP 10-A Method updated by SKC Ltd and was conducted every day for a week for six hours each day, divided into morning and eveningsequences. Coarse and fine particles were filtered using a Sioutas Impactor and a Leland Legacy personal pump with a flow rate of 9 L/min. Quartz fiber filters were placed in every stage of the impactor to collect the particles. Particulate matter (PM) concentration was measured using the gravimetric method. The weighing wasdone using a Mettler Toledo MX5 microbalance. Questionnaires were used to gather information on health problems from 63 adults and 54 children from Palembang. The mean concentrations of coarse and fine particulate matter (PM10 and PM2.5) in Palembang during the measurement periods were determined to be 818.78 µg/m3 and 672.99 µg/m3 respectively. The peak measurements for the 24-hour mean concentrations ofPM10 and PM2.5on October 21, 2015 were 1,369.34µg/m3 and 1,246.92 µg/m3 respectively. Both PM groups exceeded the 24-hour standards for PM10 and PM2.5concentrations outlined in the WHO Air Quality Guidelines and the US EPA National Ambient Air Quality Standards. Based on the results of the questionnaires,more than two-thirds of both children and adults experienced sneezing, nasal congestion, influenza, and dry cough during the forest fire episode. In conclusion, the particle pollution in Palembang city that was caused by the forest fire was hazardous to human health, and further research is needed to explore the health effects resulting from forest fire pollution that may affect Palembang’s citizens. Keywords: PM2.5, forest fire, Palembang, respiratory effect

    Nanoparticle preparation and characterization of Haruan fish (Channa striata) exctract contains albumin from south Kalimantan with ionic gelation method

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    Snakehead fish (Channa striata) has been reported to be used for wound healing by people in South Borneo because it contains albumin. Snakehead fish extract (Channa striata) has hydrophillic property and poor stability. Nanoparticle technology has been started to be developed as an alternative solution to improve drug delivery profile. The purpose of this study was to determine the formulation that obtained best characterization for nanoparticle. Nanoparticles were prepared by ionic gelation method, that was prepared by doing optimize ratio between snakehead fish extract : chitosan and pH of chitosan solvent.Nanoparticles were characterized using Particle Size Analyzer for particle size and particle size distribution, measurement of entrapment efficiency, determined Zeta potential using Particle Size Analyzer, and observation of particle’s morphology using Transmission Electron Microscope. The result showed that the chosen formula was formula 6 which  ratio of extract : chitosan 1:2 with chitosan solvent pH 3, particle size 152.3 nm, polidispersity index 0.778, percentage of entrapment efficiency 51.3961 %, Zeta potential +35.9 mV, and round shape of particles

    Analisis Sebaran Spasial Kualitas Perairan Teluk Jakarta

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    Air begitu umum sehingga diabaikan sedangkan betapa pentingnya air itu untuk mahluk hidup. Kualitas Air adalah suatu indikasi apakah perairan tersebut baik atau tidak. Teluk adalah tempat yang luas, banyak sekali sisa sisa aktivitas mahluk hidup yang dijadikan sebagai tempat pembuangan. Teluk Jakarta merupakan kawasan strategis nasional banyak aktivitas industri. Rumah tangga dan lain-lain yang berpotensi melakukan pencemaran sehingga kondisi perairan tercemar dan kotor. Analisis spasial merupakan analisis yang menampilkan gambar kondisi suatu tempat dalam suatu layer. Tujuan dari penelitian ini adalah, mengetahui distribusi spasial kualitas perairan di Teluk Jakarta. Mengetahui distribusi spasial Logam berat (Pb) di Perairan Teluk Jakarta. Analisis data yang digunakan menggunakan analisa deskriptif serta Geostatistik menggunakan Sistem Informasi Geografis dengan metode Kriging. Dengan kata lain, metode ini untuk mengestimasi besarnya nilai karakteristik Z pada titik tidak tersampel berdasarkan karakteristik titik titik sampel z yang berada disekitarnya. Hasil penelitian menunjukan bahwa Nilai distribusi spasial parameter fisika, kimia, dan biologi perairan antara lain, suhu berada pada kisaran 29.08oC - 31.53oC, kecepatan arus berada pada 0.11m/s - 0.26 m/s, DO berada pada kisaran 4.41 - 5.78 mg/l, Salinitas berada pada kisaran 30.001 ppt – 34.99 ppt, COD berada pada kisaran 181 mg/l - 257 mg/l, BOD berada pada kisaran 11 mg/l - 23 mg/l dan Fitoplankton berkisar pada kelimpahan 10 ind/l – 451 ind/l. Nilai distribusi spasial logam berat Pb berkisar pada 0.00013 ppm – 0.009 ppm. The water is so common that it is ignored while the importance of water for living creatures. Air quality is a good indication of whether or not those waters. Gulf is a big place, a lot of the rest of the rest of the activity of living organisms that serve as a dumping ground. Jakarta Bay is an area of many national strategic industry activities. Household and other potentially polluting so polluted and dirty water conditions. Spatial analysis is an analysis showing the picture condition somewhere in a layer. The purpose of this study is, to know the spatial distribution of water quality in the Bay of Jakarta. Knowing the spatial distribution of heavy metals (Pb) in the waters of Jakarta Bay. Data analysis used descriptive analysis and Geostatistical using Geographical Information Systems with Kriging method. In other words, the method for estimating the characteristic value Z at the point tersampel not based on the characteristics of the points z samples that are nearby. The results showed that the spatial distribution of the value parameter of physics, chemistry, and biology among other waters, the temperature is in the range 29.08oC - 31.53oC, current speed is at 0.11m / s - 0:26 m / s, DO in the range of 4:41 - 5.78 mg / l, salinity in the range of 30,001 ppt - 34.99 ppt, COD in the range of 181 mg / l - 257 mg / l, BOD in the range of 11 mg / l - 23 mg / l and Phytoplankton revolves around the abundance of 10 ind / l - 451 ind / l. The value of the spatial distribution of heavy metals Pb 0.00013 ppm range in - 0.009 ppm

    Growth characteristics, nitrogen uptake and enzyme activities of the nitrate-utilising ectomycorrhizal Scleroderma verrucosum

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    The growth characteristics and uptake capacities for NO3- and NH4+, as well as activities of nitrogen assimilating-enzymes have been determined in Scleroderma verrucosum. Biomass, grown on agar or liquid MMN media, was higher on nitrate. When S. verrucosum was grown in the presence of equal amounts of ammonium and nitrate, uptake rate for NH4+ was considerably higher than that of NO3-. In addition, it was found that a limitation in ammonium concentration was a prerequisite for nitrate uptake. Nitrate reductase was stimulated when the fungus was transferred from ammonium to nitrate containing media, indicating that the enzyme was inducible by nitrate and repressed by ammonium. Glutamine synthetase and NAD-glutamate synthase activities were clearly detected in S. verrucosum, while the NADP-glutamate dehydrogenase was almost undetectable. This is consistent with the view that ammonium assimilation occurs through the GS/GOGAT cycle in S. verrucosum
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