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Sistem Informasi Geografi Daerah Potensi Kekeringan Menggunakan Fuzzy Inferensi Sistem chairuddin; Sevi Nurafni
INFORMASI (Jurnal Informatika dan Sistem Informasi) Vol 12 No 1 (2020): INFORMASI (Jurnal Informatika dan Sistem Informasi)
Publisher : LPPM STMIK Indonesia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37424/informasi.v12i1.45

Kekeringan merupakan salah satu bencana alam yang frekuensi kejadiannya tinggi (hampir setiap tahun). Daerah potensi kekeringan perlu diprediksi agar dapat mengurangi kerugian-kerugian yang tidak hanya pada sektor pertanian dan lingkungan hidup tetapi juga berdampak negatif pada sektor sosial dan ekonomi bahkan dapat mengganggu stabilitas politik. Dalam pengolahan peta digital untuk sistem informasi geografis (SIG), seringkali ditemukan objek-objek penting yang tidak tepat dalam pengolahannya bahkan tidak dapat dilibatkan karena faktor ketidakpastian yang dimiliki oleh objek tersebut. Objek yang memiliki ketidakpastian berhubungan dengan data yang tidak dapat dinyatakan hanya dalam dua kondisi saja, yaitu kondisi ”ya” atau kondisi ”tidak”. Salah satu solusi yang ditawarkan dalam mengatasi keterlibatan objek yang memiliki ketidakpastian di dalam SIG adalah dengan menggunakan sistem inferensi fuzzy (SIF) metode Tsukamoto. Data yang memiliki ketidakpastian yang diangkat dalam penelitian ini adalah data non-spasial berupa faktor-faktor penentu daerah potensi kekeringan pada wilayah Nusa Tenggara Timur Sistem infrensi fuzzy dapat dijadikan sebagai salah satu solusi dalam pembuatan peta digital yang melibatkan sejumlah data yang bersifat tidak pasti. Output yang diharapkan dari penelitian ini adalah peta yang memberikan informasi tentang daerah rawan demam berdarah berdasarkan warna yang ditentukan dengan nilai yang diperoleh dari proses inferensi fuzzy.

PEMBUATAN KITOSAN PERAK SEBAGAI ADSORBEN UNTUK MENURUNKAN KADAR LOGAM BESI (Fe) DAN ZINK (Zn) PADA AIR SUNGAI DESA KOPAS KECAMATAN SIMPANG EMPAT KABUPATEN ASAHAN Agusnar, Harry; Chairuddin; Hannani, Nabilah
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 2 (2018): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Penelitian pembuatan kitosan yang dimodifikasi dengan larutan AgNO3 menjadi kitosan perak sebagai adsorben untuk menurunkan kadar logam besi (Fe) dan zink (Zn) pada air sungai desa Kopas kecamatan simpang empat kabupaten asahan telah dilakukan. Pada penelitian ini, didahului dengan pembuatan kitosan perak dengan melarutkan kitosan komersial dan asam asetat 1% serta dicampurkan dengan larutan AgNO3 0,5 M dengan rasio 2:1 lalu diteteskan kedalam larutan NaOH 2 M yang kemudian membentuk gel (bead) berwarna hitam. Kitosan perak yang telah dikeringkan dimasukkan ke dalam kolom, lalu ditambahkan dengan 50 mL sampel yang telah didestruksi dan sudah diketahui kadar logam Fe dan Zn sebesar 1,5175 mg/L dan 0,7218 mg/L. Didiamkan berdasarkan variasi waktu kontak selama 30, 45, dan 60 menit. Penentuan penurunan kadar logam yang telah di adsorbsi oleh kitosan perak dilakukan dengan menggunakan Spektrofotometri Serapan Atom (SSA). Hasil penelitian menunjukkan bahwa pada proses adsorpsi diperoleh persentase penyerapan logam Fe 82,154% dan logam Zn 84,871 % pada waktu kontak optimum penyerapan yaitu 45 menit.

PEMBUATAN KITOSAN PERAK SEBAGAI ADSORBEN UNTUK MENURUNKAN KADAR LOGAM BESI (Fe) DAN ZINK (Zn) PADA AIR SUNGAI DESA KOPAS KECAMATAN SIMPANG EMPAT KABUPATEN ASAHAN Agusnar, Harry; Chairuddin; Hannani, Nabilah
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 2 (2018): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Penelitian pembuatan kitosan yang dimodifikasi dengan larutan AgNO3 menjadi kitosan perak sebagai adsorben untuk menurunkan kadar logam besi (Fe) dan zink (Zn) pada air sungai desa Kopas kecamatan simpang empat kabupaten asahan telah dilakukan. Pada penelitian ini, didahului dengan pembuatan kitosan perak dengan melarutkan kitosan komersial dan asam asetat 1% serta dicampurkan dengan larutan AgNO3 0,5 M dengan rasio 2:1 lalu diteteskan kedalam larutan NaOH 2 M yang kemudian membentuk gel (bead) berwarna hitam. Kitosan perak yang telah dikeringkan dimasukkan ke dalam kolom, lalu ditambahkan dengan 50 mL sampel yang telah didestruksi dan sudah diketahui kadar logam Fe dan Zn sebesar 1,5175 mg/L dan 0,7218 mg/L. Didiamkan berdasarkan variasi waktu kontak selama 30, 45, dan 60 menit. Penentuan penurunan kadar logam yang telah di adsorbsi oleh kitosan perak dilakukan dengan menggunakan Spektrofotometri Serapan Atom (SSA). Hasil penelitian menunjukkan bahwa pada proses adsorpsi diperoleh persentase penyerapan logam Fe 82,154% dan logam Zn 84,871 % pada waktu kontak optimum penyerapan yaitu 45 menit.

The portrait of autism language disorder of Indonesian students (linguistics study) Nurul Farihat, Wanda; Chairuddin
SELL Journal : Scope of English Language Teaching, Linguistics, and Literature Vol 5 No 1 (2020): SELL Journal
Publisher : Penerbit STKIP PGRI Bangkalan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Nowadays, the study of autism children is phenomenal but actually it needs deep analysis of the autism childrenâ€™s language process. This research focuses on the autism children because the children has special character than another human. The autism childrenâ€™s problem or needs in language then analyze by doing some observations. Language disorder itself become the main problem on autism children. From that reason the researcher uses the portrait of autism language disorder using linguistics study to studied. This research is qualitative descriptive to gain the valid data. In addition, the researcher applies the theory of language disorder to conduct the research. The researcher also uses video which is taken by researcher and show the process of autism children when process the language. Furthermore, the researcher is analysing category of language disorder. Afterwards, the researcher observes any problem in the autism children language from linguistik study. Then researcher conclude the analysis of the study. In the end, the researcher hope the reader can gain any good information from this research.

Code-Mixing and Code-Switching in Translation and Interpretation Study Yuli Kurniawati, Arsista; Iin Rachmawati; Chairuddin
SELL Journal : Scope of English Language Teaching, Linguistics, and Literature Vol 5 No 2 (2020): SELL JOURNAL
Publisher : Penerbit STKIP PGRI Bangkalan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31597/sl.v5i2.481

Language is a combination of several words that have rules in compiling or combining some words into a whole meaning. The relationship between language and society can be called as a sociolinguistics. One of them is code-mixing and code-switching usage. This reserach uses a qualitative research to gets some information about the what, how, when and where of an event occurs or phenomenom. Besides that, the objectives of the research are: (1) to describe the form of code-mixing usage in teaching and learning process on the Seventh semester of the English Department, and (2) to describe the form of code-switching usage in teaching and learning process on the Seventh semester of the English Department.The findings showed that the students used code-mixing and code-switching usage in their presentation process. Firstly, they used code-mixing which consists of 116 forms of the word, 72 forms of the phrase and 1 form of the clause. In the forms of word often used by the students are 16 nouns, 16 adverbs, 12 adjectives, and 12 verbs. Besides that, there are 16 expressions, 12 affixes, and 32 question words usage also in their presentation process. Secondly, they used code-switching which consists of 4 intra-sentential switching and 895 inter-sentential switching. Finally, it can be concluded that in the code-mixing usage, the students are more likely to use the form of the word, while the code-switching usage, they are more likely to use inter-sentential switching.

INVESTIGATION OF BILINGUALISM COMMUNITIES: LANGUAGE TEACHING AND LEARNING IN BILINGUALISM CLASSROOM Musahroh; Chairuddin; Iin Rachmawati
SELL Journal : Scope of English Language Teaching, Linguistics, and Literature Vol 6 No 2 (2021): SELL Journal of English Education Department
Publisher : Penerbit STKIP PGRI Bangkalan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31597/sl.v6i2.678

The study aims to know the kinds of bilingualism classrooms. The research design of the study was qualitative which focuses on a case study. This study focused on Colinâ€™s theory about the kinds of bilingualism programs, they are bilingual programs, structured immersion, enrichment programs, and transitional programs. The data were obtained by observing the teacher and students in the videos teaching-learning process in bilingualism classroom by making a transcript. The result of the research finding revealed that there are only three kinds of bilingualism program of videos, the first bilingual program, second enrichment program, and the third transitional program.

Determination Study of Measurement Uncertainty On Crude Palm Oil (CPO) Using Several Chemical Analysis Methods Chairuddin
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

The measurement uncertainty on crude palm oil (CPO) for the determination of free fatty acid using the neutralization titration method base AOCS Ca5a – 40, and the determination of the Fe2+ using the spectrophotometric method have been studied. The process of uncertainty estimation is based on specifying measurand, identifying uncertainty sources, quantifying uncertainty using type A (by the statistical analysis of series of observations) and type B (by the other statistical analysis of series observations) evaluation of uncertainty, then converting them to deviation standards, and the last step was to calculate and combine the uncertainty standard and uncertainty expanded. Spreadsheet software MS Exel 2007 based on Kragten spreadsheet uncertainty calculation method was used to simplify the calculation of the combined standard uncertainty. The combined standard uncertainty was multiplied with a coverage factor of 2, and the expanded uncertainty for analysis determination of free fatty acid using the neutralization titration method based on AOCS Ca5a–40 with a concentration of 0.1612 mol/L in the sample solution was ±0.0002 mol/L. Whereas the expanded uncertainty for the determination of Fe2+ using a spectrophotometric method with a concentration of 0.131 mg/L in the sample solution was ±0.083 mg/L and calculated using a coverage factor of 2.14.

Study On Utilization of Active Natural Zeolite As Ammonia Absorbent In Aquarium As A Medium Fresh Fish Cultivation Chairuddin
Journal of Chemical Natural Resources Vol. 4 No. 1 (2022): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

A study of the use of natural zeolite active as ammonia absorbent in an aquarium as the cultivation of medium fresh fish has been conducted. The water sample was taken from the surface water of Toba Lake, Pangururan, Samosir Regency. Natural zeolite was refined until measured at 200 mesh and activated by physics. Determination of ammonia was performed using spectrophotometrically with the Nessler method at the maximum wavelength of 410 nm. The result of the analysis of this study obtained that decrease in water pH and ammonia content in the water after feeding the fish was caused by the absorption of active natural zeolite active to the tenth day which concentration of ammonia on the first and tenth day was 1.2723 mg/L and 2.4171 mg/L with the largest absorption percent on the day to ten was 38.04%.

Synthesis of Cationic Surfactant N, N-(2-Laurate-Ethyl) Stearamidium Chloride Chairuddin
Journal of Chemical Natural Resources Vol. 3 No. 2 (2021): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

The cationic surfactant of N, N-(2-Lauric-Ethyl) Stearamidium Chloride had been successfully synthesized. It is long-chain alkyl surfactant derivative from ammonium salt with amide. Cationic surfactants that are synthesized from fatty acid derivatives are stearic acid and lauric acid. Stearic acid is used as stearamide-making material which is the product of methyl stearate amidation with diethanolamine use methoxide sodium catalyst. Lauric acid was used as esterification material with stearamide thus obtaining N, N-(2-Lauric-Ethyl) Stearamide of alcanolamide ester. Alcanolamide ester continued by salting reaction use HCl gas until obtained cationic surfactant of N, N-(2-Lauric-Ethyl) Stearimidium Chloride. Each compound analyzed function groups by FT-IR spectrophotometric with the analyzed change of melting points, and a part compound analyzed surface tension characteristic with measuring Critical Micelle Concentration (CMC) with use Du Nouy ring method. The analysis product obtained shows that methyl stearate by yield in the amount of 91.66% shows that melting point of 40.5°C, stearamide with yield in the amount of 87.6% show that melting point as 185°C by CMC value 0.133 mol/ L in 40.7 dyne/cm surface tension. Alcanolamide ester with a yield in the amount of 84.7% has a melting point of 55°C by a CMC value of 0.067 mol/L in 36.1 dyne/cm surface tension, and cationic surfactant has a melting point of 45°C by CMC value 0.055 mol/L in 31,1 dyne/cm surface tension. stearamide with a yield in the amount of 87.6% show that melting point of 185°C by a CMC value of 0.133 mol/L in 40.7 dyne/cm surface tension. Alcanolamide ester with a yield in the amount of 84.7% has a melting point of 55°C by a CMC value of 0.067 mol/L in 36.1 dyne/cm surface tension, and cationic surfactant has melting point as 45°C by CMC value 0.055 mol/L in 31,1 dyne/cm surface tension. stearamide with a yield in the amount of 87.6% show that melting point of 185°C by a CMC value of 0.133 mol/L in 40.7 dyne/cm surface tension. Alcanolamide ester with a yield in the amount of 84.7% has a melting point of 55°C by a CMC value of 0.067 mol/L in 36.1 dyne/cm surface tension, and cationic surfactant has a melting point of 45°C by CMC value 0.055 mol/L in 31,1 dyne/cm surface tension.

Determination of Copper and Zinc Content in Soil Based on Soil Position and Depth in Palm and Rambutan Garden Area Chairuddin; Elsa Sucita Perangin-angin
Journal of Chemical Natural Resources Vol. 4 No. 2 (2022): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jcnar.v4i2.11969

The determination of copper and zinc in soil based on the position and depth at the application land of palm oil in the Rambutan garden. Part of control land, between rorak and plant, and rorak at a depth of 0-20 cm, 20-40 cm and 40-60 cm. Each 3 g soil sample was destructed with 10 mL of HNO3 concentrated at 180ºC for 20 minutes. Cu and Zn's content was determined using Atomic Absorption Spectroscopy (AAS) at wavelength 324.7 nm and 213.9 nm, respectively. The analysis shows that Cu and Zn metal increase rorak at 84.0% and 57.7%, and soil between rorak and plant at 76.9% and 42.4%.

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