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INDONESIA
Indonesian Journal of Engineering (IJE)
Published by Universitas Nahdlatul Ulama Nusa Tenggara Barat
ISSN : 27755150     EISSN : 27755150     DOI : -
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Mechanical Engineering
Indonesian Journal of Engineering (IJE) (p-ISSN: XXXX-XXXX | e-ISSN: 2775-5150) is a scientific, peer-reviewed and open-access articles from various engineering disciplines. This journal published by Fakultas Teknik Universitas Nahdlatul Ulama NTB half-yearly on September and March. The journal aims to publish high quality research from many kinds of original scientific research results, scientific review articles, etc. The scopes of the published articles in the prioritized order are as follows: 1) Environment 2) Computer Sciences 3) Civil 4) Mechanical 5) Otomotif & Robotics
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 3 Documents
 1 
Search results for , issue "Vol 3 No 1 (2022): Edisi September" : 3 Documents clear
Perbandingan Metode Newton Midpoint Halley, Metode Olver dan Metode Chabysave Dalam Penyelesaian Akar-Akar Persamaan Non-Linear Hani Yupita Salwa; Syaharuddin Syaharuddin; Linita Sulistina; Elin Nurmayanti; Amalia Rahmatin; Habibi Ratu Perwira Negara
Indonesian Journal of Engineering (IJE) Vol 3 No 1 (2022): Edisi September
Publisher : Fakultas Teknik Universitas Nahdlatul Ulama NTB

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Abstract

Abstrak: Persamaan non-linear kerap menjadi model matematika yang menggambarkan situasi dalam berbagai bidang, seperti bidang Teknik maupun bidang biologi. Penentuan akar penyelesaian persamaan non-linear menjadi hal yang perlu dikaji mengingat kartaktersitk dari persamaan tersebut tidak dapat diselesaikan dengan cara analitik. Tujuan dari penelitian ini adalah untuk mengetahui metode terbaik dalam menentukan akar-akar Persamaan Non-Linier. Metode penelitian dilakukan dengan membandingkan tiga metode, yaitu Metode Newton Midpoint Halley (NMH), Metode Olver, dan Metode Chebyshev dalam menyelesaikan persamaan non-linear berbentuk polinomial, trigonometri, eksponensial, dan campuran (trigonometri dan exponensial). Parameter simulasi menggunakan error sebesar 0.001. Hasil analisis diperoleh bahwa dari tiga metode yang digunakan, laju konvergensi tercepat dalam menentukan akar-akar persamaan non-linear (polinomial, trigonometri, eksponensial, campuran trigonometri dan exponensial) yaitu menggunakan metode Newton Midpoint Halley (NMH). sehingga metode terbaik dalam menyelsaikan akar-akar persamaan non-linear adalah metode Newton Midpoint Halley (NMH). Abstract: Non-linear equations often become mathematical models that describe situations in various fields, such as engineering and biology. Determining the roots of solving non-linear equations is something that needs to be studied considering that the characteristics of these equations cannot be solved by analytical means. The purpose of this research is to find out the best method for determining the roots of non-linear equations. The research method was carried out by comparing three methods, namely the Newton Midpoint Halley Method (NMH), Olver Method, and the Chebyshev Method in solving non-linear equations in the form of polynomials, trigonometry, exponentials, and mixtures (trigonometry and exponential). The simulation parameters use an error of 0.001. The results of the analysis show that of the three methods used, the fastest convergence rate in determining the roots of non-linear equations (polynomial, trigonometry, exponential, mixed trigonometry and exponential) is using the Newton Midpoint Halley (NMH) method. so that the best method for solving the roots of non-linear equations is the Newton Midpoint Halley (NMH) method.
Metode Contructed Wetlands Surface Flow (CWS-Sf): Pengaruh Waktu Tinggal Air Limbah Sudia Hartini; Tuti Verawati; Baiq Risma Yana; Haerel Asmi; Astrini Widiyanti
Indonesian Journal of Engineering (IJE) Vol 3 No 1 (2022): Edisi September
Publisher : Fakultas Teknik Universitas Nahdlatul Ulama NTB

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Abstract

Abstrak: Penelitian ini merupakan penelitian eksperimen dengan jenis RAK (Rancangan Acak Kelompok) yang bertujuan untuk mengetahui apakah waktu tinggal air limbah berpengaruh terhadap penurunan kekeruhan menggunakan metode pengolahan CWS-SF (Constructed wetland-Surface Flow) dengan melihat lamanya waktu tinggal air limbah pada reactor CWS berdasarkan debit aliran limbah. Metode yang digunakan adalah metode kuantitatif dimana sampel yang diuji berupa air limbah domestik pada salah satu kos-kosan dengan 12 alat uji reaktor CWS yang telah ditentukan perlakuan pada masing-masing reactor dalam menurunkan kadar kekeruhan pada air dengan melihat lamanya waktu tinggal air limbah berdasarkan debit aliran yang berbeda-beda sebagai kelompok pengulangan. Analisis data menggunakan uji ANOVA dengan aplikasi SPSS, sehingga didapati hasil penelitian bahwa terdapat data yang signifikan pada hasil uji ANOVA yaitu waktu tinggal didapatkan hasil sebesar 0,003 yang artinya lebih kecil dari nilai = 5% (0,05) maka H0 ditolak dan H1 diterima yang artinya terdapat pengaruh nyata dari lamanya waktu tinggal air limbah terhadap penurunan parameter kekeruhan limbah domestik, sedangkan pada kelompok debit aliran didapati hasil sebesar 1.000 yang artinya lebih besar dari nilai = 5% (0,05) maka H0 diterima dan H1 ditolak yang artinya tidak terdapat pengaruh nyata dari pengelompokakan debit aliran terhadap penurunan kekeruhan limbah domestk dengan sistem contructed wetlands tipe surface flow. Abstract This research is an experimental research using RAK (Randomized Block Design) which aims to determine whether the residence time of wastewater affects the reduction of turbidity using the CWS-SF (Constructed Wetland-Surface Flow) treatment method by looking at the length of residence time of wastewater in CWS reactor based on waste stream discharge. The method used is a quantitative method where the sample tested is in the form of domestic wastewater in one of the boarding houses with 12 CWS reactor test equipment that has been determined by the treatment in each reactor in reducing the turbidity level in the water by looking at the residence time of the wastewater based on discharge. different streams as repeat groups. Data analysis used the ANOVA test with the SPSS application, so the results found that there was significant data on the ANOVA test results, namely the residence time obtained a result of 0.003, which means it is smaller than the value of α = 5% (0.05) then H0 is rejected and H1 is accepted which means that there is a significant effect of the length of residence time of wastewater on the decrease in the turbidity parameter of domestic waste, while in the flow discharge group the result is 1,000, which means that it is greater than the value α = 5% (0.05) then H0 is accepted and H1 is rejected, which means there is no significant effect of the grouping of flow discharges on reducing the turbidity of domestic sewage with the surface flow type constructed wetlands system
Pemberian Limbah Air Cucian Beras Terhadap Pertumbuhan Tinggi Tanaman Kangkung Darat (Ipomea Reptans Poir) Asriatul Husna; Chintya Dewi Nurcahya Susilawati; Yorgen Gunawan; Pathul Azmi Aziz; Astrini Widiyanti
Indonesian Journal of Engineering (IJE) Vol 3 No 1 (2022): Edisi September
Publisher : Fakultas Teknik Universitas Nahdlatul Ulama NTB

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Abstract

Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh limbah air cucian beras terhadap pertumbuhan tinggi tanaman kangkung darat, dengan berbagai konsentrasi limbah air cucian beras untuk mengetahui pada konsentrasi berapa limbah air cucian beras efektif untuk pertumbuhan kangkung darat. Pendekatan penelitian ini adalah kuantitatif dan jenis penelitian yang digunakan adalah eksperimen. Penelitian ini menggunakan Rancangan Acak (RAL), dengan 4 perlakuan dan 3 kali ulangan, sehingga terdapat 12 unit percobaan. Dosis perlakuan yang digunakan dalam penelitian ini yaitu A0 (kontrol = 0% air cucian beras), A1 (50% air cucian beras, A2 (75% air cucian beras), dan A3 (100% air cucian beras). Data yang diambil pada masing-masing perlakuan dilakukan setiap 1, 2, dan 3 minggu setelah tanam (MST). Data dianalisis menggunakan uji ANOVA dan dilakukan uji lanjut BNT dengan taraf 5%. Berdasarkan hasil uji ANOVA diperoleh nilai signifikansi <0,05. Hal tersebut menunjukkan bahwa Fhitung > Ftabel, dengan nilai 5.614 > 4.07 yang berarti terdapat pengaruh nyata pemberian limbah air cucian beras terhadap pertumbuhan tinggi tanaman kangkung darat. Konsentrasi 100% air cucian beras (A3) menghasilkan rata-rata tinggi tanaman terbaik jika dibandingkan dengan perlakuan lainnya, yaitu mencapai 9,83 cm (1 MST), 10,97 cm (2 MST), dan 12,33 cm (3 MST).Abstract: This study aims to determine the effect of rice washing water waste on the height growth of land kale, with various concentrations of rice washing water waste to find out at what concentration rice washing water waste is effective for the growth of land kale. This research approach is quantitative and the type of research used is experimental. This study used a randomized design (CRD), with 4 treatments and 3 replications, so there were 12 experimental units. The treatment doses used in this study were A0 (control = 0% rice-washed water), A1 (50% rice-washed water, A2 (75% rice-washed water), and A3 (100% rice-washed water). The data were taken at each treatment was carried out every 1, 2, and 3 weeks after planting (WAP).The data were analyzed using the ANOVA test and a follow-up test was carried out with a BNT level of 5%. Based on the results of the ANOVA test, a significance value of <0.05 was obtained. This indicated that Fcount > Ftable, with a value of 5,614 > 4.07, which means that there is a significant effect of rice washing water waste on the growth of ground kale plant height. Concentration of 100% rice washing water (A3) produces the best average plant height when compared to other treatments, namely reaching 9.83 cm (1 WAP), 10.97 cm (2 WAP), and 12.33 cm (3 WAP).

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