Pub Date : 2019-03-31DOI: 10.24036/STUDENT.V3I2.429
ridho firmanda, Yudi Antomi, febriandi
ABSTRACT Forest Deforestation Analysis is based on land cover, where land cover is divided into two classes of forest land cover and non-forest land cover class. Deforestation is a forested area that turns into a non-forest area. Land cover uses high resolution imagery with manual image interpretation (digit on screen) method. This study aims to determine the extent of deforestation and the rate of deforestation every year so that it is known how much carbon is lost from the impact of deforestation. The method used in this research is quantitative descriptive with carbon calculation which has been determined by the unit of weight for several classes of land cover. The results of research on forest deforestation were 319.92 ha with a deforestation rate of 38.57 ha per year, causing loss of 81.724.7 tons of forest carbon C. Accuracy test of images carried out using confusion matrix (comparison of image interpretation with field conditions) with an accuracy of 92,31%. Keywords: Manual Image Interpretation, Deforestation Rate, and Accuracy Test.
森林砍伐分析的基础是土地覆盖，土地覆盖分为森林土地覆盖和非森林土地覆盖两类。森林砍伐是指森林地区变成非森林地区。土地覆盖采用高分辨率图像与人工图像解译(屏幕数字)方法。这项研究的目的是确定森林砍伐的程度和每年森林砍伐的速度，以便了解森林砍伐的影响造成了多少碳的损失。本研究使用的方法是定量描述的碳计算，碳计算是由几个类别的土地覆盖的重量单位确定的。森林毁林研究结果为319.92 ha，毁林率为38.57 ha /年，造成森林碳c损失81.724.7 t。使用混淆矩阵(图像解译与野外条件对比)进行图像精度测试，精度为92,31%。关键词:人工图像解译，毁林率，精度检验
{"title":"Analysis of Deforestation of Padang City's Protection Forest in 2007-2016 and It's Impact on Forest Carbon Emissions","authors":"ridho firmanda, Yudi Antomi, febriandi","doi":"10.24036/STUDENT.V3I2.429","DOIUrl":"https://doi.org/10.24036/STUDENT.V3I2.429","url":null,"abstract":"ABSTRACT \u0000Forest Deforestation Analysis is based on land cover, where land cover is divided into two classes of forest land cover and non-forest land cover class. Deforestation is a forested area that turns into a non-forest area. Land cover uses high resolution imagery with manual image interpretation (digit on screen) method. This study aims to determine the extent of deforestation and the rate of deforestation every year so that it is known how much carbon is lost from the impact of deforestation. The method used in this research is quantitative descriptive with carbon calculation which has been determined by the unit of weight for several classes of land cover. The results of research on forest deforestation were 319.92 ha with a deforestation rate of 38.57 ha per year, causing loss of 81.724.7 tons of forest carbon C. Accuracy test of images carried out using confusion matrix (comparison of image interpretation with field conditions) with an accuracy of 92,31%. \u0000 \u0000Keywords: Manual Image Interpretation, Deforestation Rate, and Accuracy Test.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90388070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-31DOI: 10.24036/STUDENT.V3I2.407
Mesa Gusmelia, U iswandi, Triyatno
ABSTRACT This research aims to: 1) know the changes in forest land cover into settlements in Lima Puluh Kota Regency. 2) knowing the suitability of changes in forest land cover to settlements with the Lima Puluh Kota Regency RTRW. This research is a descriptive study with secondary data analysis consisting of numeric data, namely data in the form of numbers obtained from relevant agencies and map data. The data analysis technique used is map overlay. The results showed that: 1) changes in forest land cover area into settlements in Lima Puluh Kota District for a period of 22 years from 1996 - 2018 were obtained through an analysis of land cover maps in 1996, 2006, 2018. Lima Puluh District experienced extensive changes forest amounting to 2,195.27 hectares which turned into residential land. 2) changes in forest land cover to residential land that are in accordance with the Lima Puluh Kota District RTRW of the city are 305,967.68 Ha and those that do not match amount to 1,969.3 Ha.
摘要:本研究旨在:1)了解利马Puluh Kota县森林土地覆盖变化对聚落的影响。2)利用利马Puluh Kota县RTRW了解森林土地覆盖变化对聚落的适宜性。本研究是一个描述性研究，二手数据分析由数字数据组成，即从相关机构获得的数字形式的数据和地图数据。使用的数据分析技术是地图叠加。结果表明:1)通过对1996年、2006年、2018年利马Puluh Kota地区森林土地覆盖面积的分析，获得了1996 - 2018年22年间利马Puluh Kota地区森林土地覆盖面积的变化。利马Puluh区经历了广泛的变化，森林面积达2,195.27公顷，变成了住宅用地。2)与Lima Puluh Kota区RTRW相匹配的林地覆盖变化为305,967.68 Ha，与Lima Puluh Kota区RTRW不匹配的林地覆盖变化为1,969.3 Ha。
{"title":"FOREST LAND CONVERSION CONVERSION TO SETTLEMENT IN LIMA PULUH KOTA DISTRICT","authors":"Mesa Gusmelia, U iswandi, Triyatno","doi":"10.24036/STUDENT.V3I2.407","DOIUrl":"https://doi.org/10.24036/STUDENT.V3I2.407","url":null,"abstract":"\u0000ABSTRACT \u0000 \u0000This research aims to: 1) know the changes in forest land cover into settlements in Lima Puluh Kota Regency. 2) knowing the suitability of changes in forest land cover to settlements with the Lima Puluh Kota Regency RTRW. \u0000This research is a descriptive study with secondary data analysis consisting of numeric data, namely data in the form of numbers obtained from relevant agencies and map data. The data analysis technique used is map overlay. The results showed that: 1) changes in forest land cover area into settlements in Lima Puluh Kota District for a period of 22 years from 1996 - 2018 were obtained through an analysis of land cover maps in 1996, 2006, 2018. Lima Puluh District experienced extensive changes forest amounting to 2,195.27 hectares which turned into residential land. 2) changes in forest land cover to residential land that are in accordance with the Lima Puluh Kota District RTRW of the city are 305,967.68 Ha and those that do not match amount to 1,969.3 Ha.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75451467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-31DOI: 10.24036/STUDENT.V3I2.340
Ika Reski Yolanda, Yurni Suasti, Triyatno
Penelitian ini bertujuan untuk (1) memetakan pola persebaran kafe, (2) mendeskripsikan kepuasan konsumen terhadap pelayanan kafe, (3) Faktor utama pemilihan lokasi kafe. Jenis penelitian ini adalah penelitian deskriptif. Populasi penelitian ini adalah pengunjung kafe. Sampel diambil secara accident sampling yang diambil di tiga lokasi kafe diambil sebesar 9 persen. Kafe yang diambil yaitu J-six Cafe, Taman Palem, Safari Garden Cafe. Hasil penelitian ini menunjukan: (1) Pola persebaran kafe di Kecamatan Padang Barat tersebar tidak merata dengan nilai T 0,93 (2) kepuasan konsumen dari segi pelayanan kafe sangat memuaskan sedangkan dari harga makanan dan fasilitas kafe berada pada kategori sangat memuaskan (3) Faktor-faktor yang menyebabkan pemilik kafe di kecamatan Padang Barat memilih lokasi yaitu kafe berada di pusat kota dan lokasi wisata dengan persentase 33,33%. Kata Kunci: Analisis Tetangga Terdekat, Pelayanan, Faktor Pemilihan Lokasi, Kafe.
{"title":"Pelayanan dan Pola Persebaran Lokasi Kafe di Kecamatan Padang Barat Kota Padang","authors":"Ika Reski Yolanda, Yurni Suasti, Triyatno","doi":"10.24036/STUDENT.V3I2.340","DOIUrl":"https://doi.org/10.24036/STUDENT.V3I2.340","url":null,"abstract":"Penelitian ini bertujuan untuk (1) memetakan pola persebaran kafe, (2) mendeskripsikan kepuasan konsumen terhadap pelayanan kafe, (3) Faktor utama pemilihan lokasi kafe. Jenis penelitian ini adalah penelitian deskriptif. Populasi penelitian ini adalah pengunjung kafe. Sampel diambil secara accident sampling yang diambil di tiga lokasi kafe diambil sebesar 9 persen. Kafe yang diambil yaitu J-six Cafe, Taman Palem, Safari Garden Cafe. Hasil penelitian ini menunjukan: (1) Pola persebaran kafe di Kecamatan Padang Barat tersebar tidak merata dengan nilai T 0,93 (2) kepuasan konsumen dari segi pelayanan kafe sangat memuaskan sedangkan dari harga makanan dan fasilitas kafe berada pada kategori sangat memuaskan (3) Faktor-faktor yang menyebabkan pemilik kafe di kecamatan Padang Barat memilih lokasi yaitu kafe berada di pusat kota dan lokasi wisata dengan persentase 33,33%. \u0000Kata Kunci: Analisis Tetangga Terdekat, Pelayanan, Faktor Pemilihan Lokasi, Kafe. \u0000","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84090988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-19DOI: 10.33366/REKABUANA.V4I1.1135
Arin Wildani, Septi Kurniasari
ABSTRAK Ketergantungan Indonesia terhadap ketersediaan energi fosil menjadi masalah baru dalam kelangsungan hidup rakyat Indonesia di masa yang akan datang. Energi fosil yang bersifat terbatas dan tidak terbarukan akan habis dalam kurun waktu tertentu. Sehingga diperlukan langkah baru untuk menggunakan energi baru dan terbarukan seperti energi angin. Penelitian ini dilakukan untuk mengetahui potensi pembangunan pembangkit listrik tenaga angin di wilayah Kecamatan Pangarengan Kabupaten Sampang Madura. Penelitian ini dilakukan dengan cara menganalisa kecepatan angin berdasarkan data dari pengukuran anemometer menggunakan distribusi Weibull. Data yang digunakan yaitu data sekunder yang didapatkan dari dari BMKG Kalianget Sumenep. Berdasarkan distribusi weibull didapatkan bahwa parameter k sebesar 2,67dan c sebesar 2,88. Dari nilai k dan c didapatkan bahwa persentase probabilitas energi angin paling banyak pada tahun 2016 yaitu 2,5 m/s sebanyak 45% sedangkan tahun 2017 sebesar 2,6 m/s dengan probabilitas 70%.Kata kunci: energi angin, kecamatan pangarengan, distribusi weibull ABSTRACTIndonesia's dependence on fossil energy availability is a new problem in the survival of the Indonesian people in the future. Fossil energy that is limited and non-renewable will run out in a certain period of time. So that new steps are needed to use new and renewable energy such as wind energy. This research was conducted to determine the potential for the construction of wind power plants in the Pangarengan District, Sampang Madura District. This research was conducted by analyzing wind speed based on data from anemometer measurements using the Weibull distribution. The data used are secondary data obtained from BMKG Kalianget Sumenep. Based on the weibull distribution it was found that the parameters k were 2.67 and c were 2.88. From the values of k and c, it was found that the percentage of probability of wind energy was the most in 2016, which was 2.5 m/s as much as 45% while in 2017 it was 2.6 m / s with a probability of 70%.
{"title":"Distribusi Weibull Kecepatan Angin Wilayah Kecamatan Pangarengan Kabupaten Sampang Madura","authors":"Arin Wildani, Septi Kurniasari","doi":"10.33366/REKABUANA.V4I1.1135","DOIUrl":"https://doi.org/10.33366/REKABUANA.V4I1.1135","url":null,"abstract":"ABSTRAK Ketergantungan Indonesia terhadap ketersediaan energi fosil menjadi masalah baru dalam kelangsungan hidup rakyat Indonesia di masa yang akan datang. Energi fosil yang bersifat terbatas dan tidak terbarukan akan habis dalam kurun waktu tertentu. Sehingga diperlukan langkah baru untuk menggunakan energi baru dan terbarukan seperti energi angin. Penelitian ini dilakukan untuk mengetahui potensi pembangunan pembangkit listrik tenaga angin di wilayah Kecamatan Pangarengan Kabupaten Sampang Madura. Penelitian ini dilakukan dengan cara menganalisa kecepatan angin berdasarkan data dari pengukuran anemometer menggunakan distribusi Weibull. Data yang digunakan yaitu data sekunder yang didapatkan dari dari BMKG Kalianget Sumenep. Berdasarkan distribusi weibull didapatkan bahwa parameter k sebesar 2,67dan c sebesar 2,88. Dari nilai k dan c didapatkan bahwa persentase probabilitas energi angin paling banyak pada tahun 2016 yaitu 2,5 m/s sebanyak 45% sedangkan tahun 2017 sebesar 2,6 m/s dengan probabilitas 70%.Kata kunci: energi angin, kecamatan pangarengan, distribusi weibull ABSTRACTIndonesia's dependence on fossil energy availability is a new problem in the survival of the Indonesian people in the future. Fossil energy that is limited and non-renewable will run out in a certain period of time. So that new steps are needed to use new and renewable energy such as wind energy. This research was conducted to determine the potential for the construction of wind power plants in the Pangarengan District, Sampang Madura District. This research was conducted by analyzing wind speed based on data from anemometer measurements using the Weibull distribution. The data used are secondary data obtained from BMKG Kalianget Sumenep. Based on the weibull distribution it was found that the parameters k were 2.67 and c were 2.88. From the values of k and c, it was found that the percentage of probability of wind energy was the most in 2016, which was 2.5 m/s as much as 45% while in 2017 it was 2.6 m / s with a probability of 70%.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78676861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-19DOI: 10.33366/REKABUANA.V4I1.1064
Dandy Achmad Yani, Ery Suhartanto
ABSTRAK Kurangnya ketersediaan data hidrograf merupakan kendala bagi perencanaan bangunan air. Kendala ini menjadikan model-model HSS akan memberikan manfaat yang cukup besar. Idealnya setiap DAS mempunyai Hidrograf Satuan dengan ciri tertentu. Studi ini bertujuan untuk mengamati karakteristik hidrograf pengamatan di tiap DAS dan semua DAS di Propinsi Sulawesi Selatan. Tujuan utama studi ini adalah membuat rancangan Model Hidrograf Satuan Sintetis antara lain persamaan debit puncak banjir (Qp) dan waktu mencapai puncak banjir (Tp) yang antara lain merupakan fungsi dari luas DAS (A), panjang sungai terpanjang (L), dan faktor bentuk DAS. Faktor bentuk DAS merupakan rasio dari keliling (K) dan luas area (A) DAS. Analisis model menggunakan regresi dengan berbagai alternatif. Hasilnya permodelan hidrograf satuan sintetis (HSS) dengan variabel luas DAS (A), panjang sungai terpanjang (L), dan faktor bentuk DAS (FD) dan tentunya sesuai dengan kriteria dari koefisien determinasi, diharapkan mempunyai sensitivitas yang cukup tinggi. Faktor bentuk DAS (FD) diharapkan mempunyai hubungan linear dengan parameter hidrograf satuan sintetis.Kata kunci: debit puncak banjir, waktu mencapai puncak, luas DAS, panjang sungai terpanjang, faktor bentuk DAS ABSTRACT The lack of hydrograph data availability is an obstacle for water building planning. This constraint makes HSS models will provide considerable benefits. Ideally each watershed has a Hydrograph Unit with certain characteristics. This study aims to observe the hydrograph characteristics of observations in each watershed and all watersheds in South Sulawesi Province. The main objective of this study is to design a Synthetic Unit Hydrograph Model, including the peak flood discharge equation (Qp) and the time to reach the flood peak (Tp), which among others is a function of the watershed area (A), longest river length (L), and form factor Watershed. The watershed form factor is the ratio of perimeter (K) and area (A) of the watershed. Model analysis uses regression with various alternatives. The result is synthetic unit hydrograph modeling (HSS) with a broad variable watershed (A), longest river length (L), and DAS (FD) form factor and of course according to the criteria of the coefficient of determination, it is expected to have a high enough sensitivity. The DAS (FD) form factor is expected to have a linear relationship with the parameters of synthetic unit hydrographs.
{"title":"Model Debit Puncak Banjir Berdasarkan Faktor Bentuk DAS untuk Sungai-Sungai di Sulawesi Selatan","authors":"Dandy Achmad Yani, Ery Suhartanto","doi":"10.33366/REKABUANA.V4I1.1064","DOIUrl":"https://doi.org/10.33366/REKABUANA.V4I1.1064","url":null,"abstract":"ABSTRAK Kurangnya ketersediaan data hidrograf merupakan kendala bagi perencanaan bangunan air. Kendala ini menjadikan model-model HSS akan memberikan manfaat yang cukup besar. Idealnya setiap DAS mempunyai Hidrograf Satuan dengan ciri tertentu. Studi ini bertujuan untuk mengamati karakteristik hidrograf pengamatan di tiap DAS dan semua DAS di Propinsi Sulawesi Selatan. Tujuan utama studi ini adalah membuat rancangan Model Hidrograf Satuan Sintetis antara lain persamaan debit puncak banjir (Qp) dan waktu mencapai puncak banjir (Tp) yang antara lain merupakan fungsi dari luas DAS (A), panjang sungai terpanjang (L), dan faktor bentuk DAS. Faktor bentuk DAS merupakan rasio dari keliling (K) dan luas area (A) DAS. Analisis model menggunakan regresi dengan berbagai alternatif. Hasilnya permodelan hidrograf satuan sintetis (HSS) dengan variabel luas DAS (A), panjang sungai terpanjang (L), dan faktor bentuk DAS (FD) dan tentunya sesuai dengan kriteria dari koefisien determinasi, diharapkan mempunyai sensitivitas yang cukup tinggi. Faktor bentuk DAS (FD) diharapkan mempunyai hubungan linear dengan parameter hidrograf satuan sintetis.Kata kunci: debit puncak banjir, waktu mencapai puncak, luas DAS, panjang sungai terpanjang, faktor bentuk DAS ABSTRACT The lack of hydrograph data availability is an obstacle for water building planning. This constraint makes HSS models will provide considerable benefits. Ideally each watershed has a Hydrograph Unit with certain characteristics. This study aims to observe the hydrograph characteristics of observations in each watershed and all watersheds in South Sulawesi Province. The main objective of this study is to design a Synthetic Unit Hydrograph Model, including the peak flood discharge equation (Qp) and the time to reach the flood peak (Tp), which among others is a function of the watershed area (A), longest river length (L), and form factor Watershed. The watershed form factor is the ratio of perimeter (K) and area (A) of the watershed. Model analysis uses regression with various alternatives. The result is synthetic unit hydrograph modeling (HSS) with a broad variable watershed (A), longest river length (L), and DAS (FD) form factor and of course according to the criteria of the coefficient of determination, it is expected to have a high enough sensitivity. The DAS (FD) form factor is expected to have a linear relationship with the parameters of synthetic unit hydrographs. ","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90292657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-19DOI: 10.33366/REKABUANA.V4I1.1021
Adhi Yanuar Avianta, Rispiningtati Rispiningtati, L. M. Limantara, Ery Suhartanto
This research intends to investigate the land cover change and to obtain the canopy interception in the Lesti sub-watershed, and to produce the rainfall-discharge modeling as the function of net rainfall factor. The methodology consisted of identifying the land cover based on the Normalized Difference Vegetation Index (NDVI) classification of digital satellite images Landsat TM 7 and TM 8, carrying out the field study to obtain the canopy interception used a volume balance approach. The interception rate of Lesti sub-watershed are 5 – 7 % in everage of rainfall, the net-rainfall models of Lesti sub-watershed are Pnetto= P - (-1E07P² + 0.059P +0.260) for land clasification II and Pnetto = P – (-1E07P² + 0.199P + 0.16) for land clasification III, it used as the input on the rainfall-discharge modeling of F.J. Mock, the result showed that the use of net-rainfall on the rainfall-discharge modeling of F.J. Mock increased the accuracy of generated discharge which is strongly influenced by the proportional of land classification.
{"title":"Pemodelan Hujan Netto Berdasarkan Tutupan Lahan untuk Analisa Debit Aliran Rendah","authors":"Adhi Yanuar Avianta, Rispiningtati Rispiningtati, L. M. Limantara, Ery Suhartanto","doi":"10.33366/REKABUANA.V4I1.1021","DOIUrl":"https://doi.org/10.33366/REKABUANA.V4I1.1021","url":null,"abstract":"This research intends to investigate the land cover change and to obtain the canopy interception in the Lesti sub-watershed, and to produce the rainfall-discharge modeling as the function of net rainfall factor. The methodology consisted of identifying the land cover based on the Normalized Difference Vegetation Index (NDVI) classification of digital satellite images Landsat TM 7 and TM 8, carrying out the field study to obtain the canopy interception used a volume balance approach. The interception rate of Lesti sub-watershed are 5 – 7 % in everage of rainfall, the net-rainfall models of Lesti sub-watershed are Pnetto= P - (-1E07P² + 0.059P +0.260) for land clasification II and Pnetto = P – (-1E07P² + 0.199P + 0.16) for land clasification III, it used as the input on the rainfall-discharge modeling of F.J. Mock, the result showed that the use of net-rainfall on the rainfall-discharge modeling of F.J. Mock increased the accuracy of generated discharge which is strongly influenced by the proportional of land classification.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74186728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The availability of fuel caused by fossil decline, so that required alternative fuel that can fulfill a need consumers.Biodiesel is alternative fuel of seeds having a big to be developed.One of seeds that can be used is seeds kapok.The purpose of this research is to know the influence of ratio molar oil methanol and the addition of a catalyst to yield.Making biodiesel this through four stage that is preparasi a catalyst ca / hydrotalcite, degumming.Esterifikasi and transesterifikasi.Oil the kapok already omitted gum and lowered levels ffa below 1 %, then the oil processed transesterifikasi by the addition of a catalyst already dipreparasi ( 0.5 %, 1 percent and 1.5 % w / w of a mass oil ).Based on the research obtained on ratios molar 1 oil: 20 methanol produce fame highest levels of 5,55 % and yield biodiesel produced is 3,92 %.
由于化石燃料的可获得性下降，使得消费者需要替代燃料来满足需求。生物柴油是一种有待开发的种子替代燃料。其中一种可用的种子是木棉种子。本研究的目的是了解油、甲醇的摩尔比和催化剂的添加对收率的影响。生产生物柴油要经过四个阶段，即制备催化剂、水滑石、脱胶。酯交换和酯交换。木棉的油已经省略了树胶，并将ffa含量降低到1%以下，然后通过添加已经不准备的催化剂(质量油的0.5%，1%和1.5% w / w)来处理酯交换。根据摩尔1油:20甲醇的比例研究得出，最高产率为5.55%，生物柴油的产率为3.92%。
{"title":"Biodiesel dari Minyak Biji Kapuk (Ceiba Pentandra) Menggunakan Katalis Ca/Hydrotalcite","authors":"E. Ningsih, Yustia Wulandari Mirzayanti, Achmad Chusnun Niam, Pipit Febrianita, Wanvia Vangesti","doi":"10.33366/REKABUANA.V4I1.1023","DOIUrl":"https://doi.org/10.33366/REKABUANA.V4I1.1023","url":null,"abstract":" The availability of fuel caused by fossil decline, so that required alternative fuel that can fulfill a need consumers.Biodiesel is alternative fuel of seeds having a big to be developed.One of seeds that can be used is seeds kapok.The purpose of this research is to know the influence of ratio molar oil methanol and the addition of a catalyst to yield.Making biodiesel this through four stage that is preparasi a catalyst ca / hydrotalcite, degumming.Esterifikasi and transesterifikasi.Oil the kapok already omitted gum and lowered levels ffa below 1 %, then the oil processed transesterifikasi by the addition of a catalyst already dipreparasi ( 0.5 %, 1 percent and 1.5 % w / w of a mass oil ).Based on the research obtained on ratios molar 1 oil: 20 methanol produce fame highest levels of 5,55 % and yield biodiesel produced is 3,92 %.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86136506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-19DOI: 10.33366/REKABUANA.V4I1.1058
D. Purwaningsih, Daril Ridho Zuchrilah, I. Nurmala
Minyak goreng merupakan salah satu kebutuhan masyarakat yang semakin hari semakin meningkat baik jumlah maupun harga. Untuk mengatasi hal tersebut, masyarakat menggunakan minyak goreng curah. Minyak goreng curah adalah minyak goreng yang memiliki kualitas maupun higienitas di bawah baku mutu SNI 3555-1998, karena tanpa kemasan yang sesuai, minyak goreng akan mudah teroksidasi. Penelitian bertujuan untuk memperbaiki kualitas minyak goreng curah menggunakan ekstrak kulit pisang raja karena kulit pisang raja mengandung antioksidan alami yaitu flavonoid. Untuk memperoleh antioksidan alami tersebut, kulit pisang raja diekstraksi menggunakan metode maserasi dengan pelarut metanol dan etil asetat. Adapun berat ekstrak yang ditambahkan ke dalam minyak goreng curah yaitu 1; 1,5; 2; 2,5 gram dengan lama pengadukan yaitu 20, 40, 60 menit. Sampel kemudian dianalisis nilai bilangan asam, iod, peroksida. Hasil terbaik pada penelitian ini didapatkan pada penambahan ekstrak sebanyak 2,5 gram dan waktu pengadukan 60 menit dengan hasil bilangan asam 0,19827 meq/kg, bilangan iod 1,86817 meq/kg, bilangan perosida 1,94608 meq/kg.Kata kunci: minyak goreng curah; kulit pisang raja; antioksidan alami; bilangan asam; iod; peroksidaABSTRACTCooking oil is one of the society necessity which is day by day increase terms of quantity and prices.To overcome these issues, of people use cooking oil is.Cooking oil is is cooking oil having of quality and higienitas under of quality standard sni 3555-1998, because without packaging appropriate, cooking oil will easily oxidized.Research aimed at improving the quality of cooking oil is use extract the skin of a banana the king because the skin plantain containing antioxidant natural that is flavonoid.To obtain antioxidant the natural, the skin of a banana the king extracted uses the method maceration with a solvent methanol and ethyl acetate.And the weight of the extract added to the cooking oil is such as 1; 1.5; 2; 2.5 grams with long stirring ie 20, 40, 60 minutes.Sample then analyzed point number acid, iod, peroxide.The best result in this study obtained to adding extract as many as 2.5 gram and time stirring 60 minutes with the result even though the number of the the action of dilute acids 0.19827 meq / from thirty to forty pounds , the number of the iod 1.86817 meq / from thirty to forty pounds , the number of the perosida 1.94608 meq kg.
{"title":"Peningkatkan Mutu Minyak Goreng Curah dengan Penambahan Ekstrak Kulit Pisang Raja Sebagai Antioksidan Alami","authors":"D. Purwaningsih, Daril Ridho Zuchrilah, I. Nurmala","doi":"10.33366/REKABUANA.V4I1.1058","DOIUrl":"https://doi.org/10.33366/REKABUANA.V4I1.1058","url":null,"abstract":"Minyak goreng merupakan salah satu kebutuhan masyarakat yang semakin hari semakin meningkat baik jumlah maupun harga. Untuk mengatasi hal tersebut, masyarakat menggunakan minyak goreng curah. Minyak goreng curah adalah minyak goreng yang memiliki kualitas maupun higienitas di bawah baku mutu SNI 3555-1998, karena tanpa kemasan yang sesuai, minyak goreng akan mudah teroksidasi. Penelitian bertujuan untuk memperbaiki kualitas minyak goreng curah menggunakan ekstrak kulit pisang raja karena kulit pisang raja mengandung antioksidan alami yaitu flavonoid. Untuk memperoleh antioksidan alami tersebut, kulit pisang raja diekstraksi menggunakan metode maserasi dengan pelarut metanol dan etil asetat. Adapun berat ekstrak yang ditambahkan ke dalam minyak goreng curah yaitu 1; 1,5; 2; 2,5 gram dengan lama pengadukan yaitu 20, 40, 60 menit. Sampel kemudian dianalisis nilai bilangan asam, iod, peroksida. Hasil terbaik pada penelitian ini didapatkan pada penambahan ekstrak sebanyak 2,5 gram dan waktu pengadukan 60 menit dengan hasil bilangan asam 0,19827 meq/kg, bilangan iod 1,86817 meq/kg, bilangan perosida 1,94608 meq/kg.Kata kunci: minyak goreng curah; kulit pisang raja; antioksidan alami; bilangan asam; iod; peroksidaABSTRACTCooking oil is one of the society necessity which is day by day increase terms of quantity and prices.To overcome these issues, of people use cooking oil is.Cooking oil is is cooking oil having of quality and higienitas under of quality standard sni 3555-1998, because without packaging appropriate, cooking oil will easily oxidized.Research aimed at improving the quality of cooking oil is use extract the skin of a banana the king because the skin plantain containing antioxidant natural that is flavonoid.To obtain antioxidant the natural, the skin of a banana the king extracted uses the method maceration with a solvent methanol and ethyl acetate.And the weight of the extract added to the cooking oil is such as 1; 1.5; 2; 2.5 grams with long stirring ie 20, 40, 60 minutes.Sample then analyzed point number acid, iod, peroxide.The best result in this study obtained to adding extract as many as 2.5 gram and time stirring 60 minutes with the result even though the number of the the action of dilute acids 0.19827 meq / from thirty to forty pounds , the number of the iod 1.86817 meq / from thirty to forty pounds , the number of the perosida 1.94608 meq kg.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80599974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-19DOI: 10.33366/REKABUANA.V4I1.1195
Himatul Farichah
Surabaya has an earthquake potential reach to 6.5 Mw. Moreover, on average, Surabaya area is a lowland which is alluvial deposits. Thus, it is required to perform potential liquefaction. Liquefaction potential analysis was performed by taking the soil data from the center of Surabaya. The initial of liquefaction potential analysis was conducted by considering soil gradation, relative density (DR), fine content (FC), degree of saturation (SR) dan SPT number. However, the advanced analysis was undertaken by utilizing Youd and Idriss 2001 dan metode Idriss 2008. The results of initial of liquefaction potential analysis show that the soil has potential to be liquefied at the depth 1-7m, however at the depth 22m the soil is not liquefied. Furthermore, the results of advanced analysis and conclusions of the analysis show that the soil has a liquefied potential at the depth 17 m from the surfaceABSTRAK Kota Surabaya memiliki potensi gempa yang terjadi bisa mencapai 6.5 Mw. Selain itu, Wilayah kota Surabaya merupakan daerah yang rata-rata dataran rendah, yang berkisar 80% merupakan endapan alluvial. Sehingga perlu dilakukan analisis potensi likuifaksi. Analisis potensi likuifaksi hanya dilakukan pada data tanah wilayah Surabaya Pusat. Analisis awal potensi likuifaksi dilakukan berdasarkan aspek gradasi tanah, relative density (DR), fine content (FC), derajat kejenuhan (SR), dan jumlah pukulan SPT. Sedangkan analisis lanjutan dengan menghitung Cyclic Shear Ratio (CSR), Cyclic Resistance Ratio (CRR), dan Factor of safety (FS) dengan menggunakan metode Youd dan Idriss 2001 dan metode Idriss 2008. Berdasarkan analisis awal, pada kedalaman 1-7 m masih ada potensi likuifaksi, sedangkan tidak ada lagi potensi likuifaksi pada kedalaman lebih dari 22 m. Berdasarkan analisis lanjutan dan kesimpulan analisis, hampir semua kedalaman memiliki potensi likuifaksi hingga kedalaman 17m.Kata kunci : Likuifaksi; gempa; analisis potensi likuifaksi
泗水可能发生6.5兆瓦的地震。此外，平均而言，泗水地区是一个低地，是冲积矿床。因此，需要进行潜在液化。利用泗水中心的土壤数据进行了液化潜力分析。通过考虑土壤级配、相对密度(DR)、细粒含量(FC)、饱和度(SR)和SPT数对液化潜力进行初步分析。然而，利用Youd和Idriss 2001和Idriss 2008的方法进行了高级分析。液化势初步分析结果表明:1 ~ 7m深度土层有液化潜力，22m深度土层不液化。进一步的分析结果和分析结论表明，土壤在离地表17 m深度处具有液化势(6.5 Mw)。Selain itu, Wilayah kota Surabaya merupakan daerah yang rata-rata dataran rendah, yang berkisar 80% merupakan endapan冲积。兴衰兴衰，分析潜在的可能性。分析潜在的可能性，如:在泗水，在水，在水，在水。分析alpotential likuifaksi dilakukan berdasarkan speech gradasi tanah、相对密度(DR)、细含量(FC)、derajat kejenuhan (SR)、dan jumlah pukulan SPT。Sedangkan分析蓝柱坦、登干蒙古纳坎循环剪切比(CSR)、循环阻力比(CRR)、丹安全系数(FS)、登干蒙古纳坎法、Youd丹伊德里斯2001丹伊德里斯2008。Berdasarkan的分析结果显示，1-7 m的paada kedalaman, 1-7 m的paada potential potential likuifaksi, 2 - 2 m的paada kedalaman lebih dari。Berdasarkan分析lanjutan和kespulan分析，阻碍semua kedalaman记忆潜力，像akaka kedalaman 17m。Kata kunci: Likuifaksi;gempa;分析潜在的可能性
{"title":"Analisis Potensi Likuifaksi dengan Metode Deterministik di Wilayah Surabaya","authors":"Himatul Farichah","doi":"10.33366/REKABUANA.V4I1.1195","DOIUrl":"https://doi.org/10.33366/REKABUANA.V4I1.1195","url":null,"abstract":"Surabaya has an earthquake potential reach to 6.5 Mw. Moreover, on average, Surabaya area is a lowland which is alluvial deposits. Thus, it is required to perform potential liquefaction. Liquefaction potential analysis was performed by taking the soil data from the center of Surabaya. The initial of liquefaction potential analysis was conducted by considering soil gradation, relative density (DR), fine content (FC), degree of saturation (SR) dan SPT number. However, the advanced analysis was undertaken by utilizing Youd and Idriss 2001 dan metode Idriss 2008. The results of initial of liquefaction potential analysis show that the soil has potential to be liquefied at the depth 1-7m, however at the depth 22m the soil is not liquefied. Furthermore, the results of advanced analysis and conclusions of the analysis show that the soil has a liquefied potential at the depth 17 m from the surfaceABSTRAK Kota Surabaya memiliki potensi gempa yang terjadi bisa mencapai 6.5 Mw. Selain itu, Wilayah kota Surabaya merupakan daerah yang rata-rata dataran rendah, yang berkisar 80% merupakan endapan alluvial. Sehingga perlu dilakukan analisis potensi likuifaksi. Analisis potensi likuifaksi hanya dilakukan pada data tanah wilayah Surabaya Pusat. Analisis awal potensi likuifaksi dilakukan berdasarkan aspek gradasi tanah, relative density (DR), fine content (FC), derajat kejenuhan (SR), dan jumlah pukulan SPT. Sedangkan analisis lanjutan dengan menghitung Cyclic Shear Ratio (CSR), Cyclic Resistance Ratio (CRR), dan Factor of safety (FS) dengan menggunakan metode Youd dan Idriss 2001 dan metode Idriss 2008. Berdasarkan analisis awal, pada kedalaman 1-7 m masih ada potensi likuifaksi, sedangkan tidak ada lagi potensi likuifaksi pada kedalaman lebih dari 22 m. Berdasarkan analisis lanjutan dan kesimpulan analisis, hampir semua kedalaman memiliki potensi likuifaksi hingga kedalaman 17m.Kata kunci : Likuifaksi; gempa; analisis potensi likuifaksi","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78064198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-19DOI: 10.33366/REKABUANA.V4I1.1162
Anitarakhmi Handaratri, Yuyun Yuniati
The pigment in mulberry (Morus alba L.), anthocyanin, is a kind of natural pigment for food processing and has functional potential and commercial values. Some investigators have developed a method to obtain high extraction yields in a short time. High yields with Ultrasonic Assisted Extraction method using ultrasonic waves that affect the cell wall and causes the destruction of a thin layer and helps in releasing phenolic compounds that trapped in the cell wall. Microwave Assisted Extraction method uses the energy of microwave radiation to heat the solvent quickly and efficiently. This study concludes and gives an overview advantages of both methods were compared with conventional methods.
桑(Morus alba L.)色素花青素是一种天然的食品加工色素，具有功能潜力和商业价值。一些研究人员已经开发出一种在短时间内获得高提取率的方法。利用超声波影响细胞壁，破坏细胞壁薄层，帮助释放困在细胞壁中的酚类化合物，从而获得高产量。微波辅助萃取法利用微波辐射的能量对溶剂进行快速、高效的加热。本研究总结并概述了两种方法与传统方法的优势。
{"title":"Kajian Ekstraksi Antosianin dari Buah Murbei dengan Metode Sonikasi dan Microwave","authors":"Anitarakhmi Handaratri, Yuyun Yuniati","doi":"10.33366/REKABUANA.V4I1.1162","DOIUrl":"https://doi.org/10.33366/REKABUANA.V4I1.1162","url":null,"abstract":"The pigment in mulberry (Morus alba L.), anthocyanin, is a kind of natural pigment for food processing and has functional potential and commercial values. Some investigators have developed a method to obtain high extraction yields in a short time. High yields with Ultrasonic Assisted Extraction method using ultrasonic waves that affect the cell wall and causes the destruction of a thin layer and helps in releasing phenolic compounds that trapped in the cell wall. Microwave Assisted Extraction method uses the energy of microwave radiation to heat the solvent quickly and efficiently. This study concludes and gives an overview advantages of both methods were compared with conventional methods.","PeriodicalId":20973,"journal":{"name":"Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75862277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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