Garuda - Garba Rujukan Digital

AN ANALYSIS OF METAL SURFACE IMMERSED IN BASED LUBRICANT FROM MINERAL OIL CONTAINING VEGETABLE OIL WITH RICE BRAN OIL BASED BIO-INHIBITOR Nugrahani, Ratri Ariatmi; Hendrawati, Tri Yuni; Susanty, Susanty
Jurnal Bahan Alam Terbarukan Vol 7, No 2 (2018): December 2018 [Nationally Accredited]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v7i2.11623

The need for environmentally friendly chemical products in daily needs encourages the production of its. The green-chemistry concept is using the process and produces chemical products that are ecofriendly. Including ecofriendly chemical products are base oil and additives for lubricants, grease, and fuels. The production is expected to reduce the consumption of mineral and synthetic base oils, so it will be biodegradable and renewable. This study compares the results of analysis of metallic surfaces immersed in the mixture of mineral and vegetable base oil, with the addition of rice bran oil bioadditive, ie epoxidized methyl ester (EME) and hydroxyl alkylbenzene sulphonic acid ester (HASE). The research method consists of preparing HASE; analyzing the effect of HASE and EME bioadditives addition on the mixture of base oil to the changing of metallic weight immersed in the mixture; determining the inhibition efficiency of the EME and HSAE additions; analyzing the metal surface using SEM-EDX (Scanning Electron Microscope) / (Energy Dispersive X-ray Spectrometry) to find images of microstructure and chemical compounds contained in specimens, and testing the metal difractogram immersed in base oil mixtures with bioadditive using XRD (X-Ray Diffraction). SEM test results of carbon steel immersed in a mixture of base oil and bioadditives show corrosion in which the metal surface color immersed in EME bioadditive mixtures is brighter. EDX spectra of metal sample surfaces immersed in a mixture of base oil, EME and HASE contain carbon (C) and iron (Fe). The carbon content in carbon steel samples immersed in the mixtures and HASE is higher. XRD test results show Fe2O3 phases in carbon steel samples immersed in the HASE bioadditive mixture are higher than in EME. While Fe3O4 phases in carbon steel samples immersed in the EME bioadditive mixture are higher than Fe2O3 phases in samples immersed in HASE bioadditive mixture.

RELEVANSI MATERI MATA PELAJARAN PEMELIHARAAN ENGINE SEPEDA MOTOR TERHADAP TUNTUTAN INDUSTRI Susanty, Susanty; Permana, Tatang; Sriyono, Sriyono
Journal of Mechanical Engineering Education Vol 5, No 1 (2018): Juni
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jmee.v5i1.12627

Tujuan penelitian ini yaitu untuk mendeskripsikan relevansi materi pada mata pelajaran Pemeliharaan Engine Sepeda Motor dengan tuntutan industri, dan membuat pemetaan sekuen antara kedua kompetensi tersebut. Metode Penelitian ini menggunakan metode evaluasi congruence model. Instrumen yang digunakan pada penelitian ini berupa dokumentasi, wawancara dan angket. Penelitian ini dilaksanakan di SMKN 8 Bandung dan PT. Daya Adicipta Motora Cibeureum. Partisipan dalam penelitian ini yakni Kepala Diklat divisi Service, Workshop Head, dan instruktur di PT. Daya Adicipta Motor. Partisipan dari pihak SMKN 8 Bandung yakni Wakil Kepala Sekolah bidang Kurikulum serta Guru paket keahlian Teknik Sepeda Motor. Hasil dari relevansi antar kedua kompetensi tersebut adalah 70,3%, hasil ini menunjukkan bahwa relevansi materi pemeliharaan engine sepeda motor di SMKN 8 Bandung termasuk kategori relevan. Pemetaan sekuen dari kedua kompetensi tersebut menghasilkan bahwa kompetensi mata pelajaran pemeliharaan engine sepeda motor sudah sesuai dengan tuntutan industri

AN ANALYSIS OF METAL SURFACE IMMERSED IN BASED LUBRICANT FROM MINERAL OIL CONTAINING VEGETABLE OIL WITH RICE BRAN OIL BASED BIO-INHIBITOR Nugrahani, Ratri Ariatmi; Hendrawati, Tri Yuni; Susanty, Susanty
Jurnal Bahan Alam Terbarukan Vol 7, No 2 (2018): December 2018 [Nationally Accredited]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v7i2.11623

The need for environmentally friendly chemical products in daily needs encourages the production of its. The green-chemistry concept is using the process and produces chemical products that are ecofriendly. Including ecofriendly chemical products are base oil and additives for lubricants, grease, and fuels. The production is expected to reduce the consumption of mineral and synthetic base oils, so it will be biodegradable and renewable. This study compares the results of analysis of metallic surfaces immersed in the mixture of mineral and vegetable base oil, with the addition of rice bran oil bioadditive, ie epoxidized methyl ester (EME) and hydroxyl alkylbenzene sulphonic acid ester (HASE). The research method consists of preparing HASE; analyzing the effect of HASE and EME bioadditives addition on the mixture of base oil to the changing of metallic weight immersed in the mixture; determining the inhibition efficiency of the EME and HSAE additions; analyzing the metal surface using SEM-EDX (Scanning Electron Microscope) / (Energy Dispersive X-ray Spectrometry) to find images of microstructure and chemical compounds contained in specimens, and testing the metal difractogram immersed in base oil mixtures with bioadditive using XRD (X-Ray Diffraction). SEM test results of carbon steel immersed in a mixture of base oil and bioadditives show corrosion in which the metal surface color immersed in EME bioadditive mixtures is brighter. EDX spectra of metal sample surfaces immersed in a mixture of base oil, EME and HASE contain carbon (C) and iron (Fe). The carbon content in carbon steel samples immersed in the mixtures and HASE is higher. XRD test results show Fe2O3 phases in carbon steel samples immersed in the HASE bioadditive mixture are higher than in EME. While Fe3O4 phases in carbon steel samples immersed in the EME bioadditive mixture are higher than Fe2O3 phases in samples immersed in HASE bioadditive mixture.

PENGARUH STRUKTUR MODAL PROFITABILITAS LIKUIDITAS DAN PERPUTARAN PERSEDIAAN TERHADAP HARGA SAHAM PADA PERUSAHAAN MAKANAN DAN MINUMAN YANG TERDAFTAR DI BURSA EFEK INDONESIA Nasution, Siti Aisyah; Steffie, Steffie; Susanty, Susanty

Publisher :

Nilai suatu organisasi dapat ditentukan oleh tinggi dan rendahnya harga saham. Harga saham diambil dari nilai pada penutupan. Harga saham yang tinggi tidak diragukan lagi dipengaruhi oleh organisasi yang hebat, para eksekutif. Struktur modal yang layak tidak benar-benar menunjukkan organisasi yang hebat pada para eksekutifnya. Salah satu variabel penting yang dapat membentuk tingkat harga saham organisasi adalah rasio profitabilitas. Proporsi lain yang menjadi fokus pendukung keuangan adalah likuiditas organisasi yang akan mereka beli. Dengan administrasi perputaran saham yang baik, dan kesepakatan yang diperluas, organisasi dapat membangun keuntungan dan harga saham juga akan meningkat. Eksplorasi ini merupakan pemeriksaan dengan metodologi ilustrasi kuantitatif. Pengujian dilakukan terhadap 10 perusahaan industri sektor makanan dan minuman dengan 40 informasi laporan keuangan. Strategi pengumpulan informasi menggunakan dokumentasi dan model pemeriksaan yang digunakan regresi linear berganda. Konsekuensi pengujian sekaligus pengujian teori menunjukkan bahwa struktur modal, profitabilitas, likuiditas dan perputaran persediaan berpengaruh signifikan terhadap variabel dependen harga saham pada organisasi makanan dan minuman yang tercatat di Bursa Efek Indonesia (BEI). Pengujian teori secara satu persatu menunjukkan bahwa struktur modal dan perputaran persediaan tidak memiliki dampak dan tidak besar terhadap harga saham, sedangkan profitabilitas memiliki dampak positif dan besar pada harga saham dan likuiditas memiliki dampak negatif dan besar terhadap harga saham pada organisasi makanan dan minuman yang tercatat di BEI. Nilai koefisien determinasi adalah 0,557, yang berarti bahwa 55,7% dari harga saham diklarifikasi oleh struktur modal, profitabilitas, likuiditas, dan perputaran persediaan secara bersama-sama. 44,3% sisanya diklarifikasi oleh faktor-faktor berbeda yang tidak dianalisis dalam pemeriksaan ini.

Pengaruh Massa Bioadsorben dari Klobot Jagung Terhadap Penurunan Kandungan Asam Lemak Bebas (FFA), Nilai Peroksida (PV) dan Tingkat Warna Dalam Minyak Sawit Mentah (CPO) Yustinah, Yustinah; Susanty, Susanty; Hendrawati, Tri Yuni; Fithriyah, Nurul Hidayati; Cardosh, Syafira R
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2023: PROSIDING SNTKK 2023
Publisher : Seminar Nasional Teknik Kimia "Kejuangan"

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

Indonesia as an agricultural country, produces many agricultural products. In addition to agricultural products, agricultural waste is also generated throughout the year. This agricultural waste is still underutilized. One of the efforts to utilize agricultural waste is to process agricultural waste into bioadsorbent. This study aims to study the effect of the mass of bioadsorbent from agricultural waste, namely corn husks on reducing levels of free fatty acids (FFA), peroxide value (PV) and color in crude palm oil (CPO). Clean corn husks are then mashed, after which it is reacted with NaOH to remove the lignin content and neutralized with HCl, so that a bioadsorbent is obtained. Crude palm oil is heated to 80 oC, then mixed with 2 to 10 grams of bioadsorbent according to the variables used. The mixture was stirred at 500 rpm for one hour, and the temperature was maintained at 80 oC. After the adsorption process is complete, the mixture is filtered using a vacuum pump and the filtrate is taken. The filtrate obtained was analyzed for free fatty acid content, peroxide value and color. The research resulted in the more mass of bioadsorbent used, the greater the decrease in free fatty acid levels, peroxide value and color. Using 10 g of bioadsorbent can reduce FFA levels by 41.29%, reduce PV values by 54.96% and reduce color absorbance by 29.06%.

Thematic analysis on novice learner"™s procedural writing challenges: Insights, influences, and implications Ristati, Ristati; Bahing, Bahing; Sujiyani, Erma; Susanty, Susanty; Norahmi, Maida; Nugraha, Richard Ferry; Amalia, Novika
Journal of English Language Teaching Innovations and Materials (Jeltim) Vol 6, No 2 (2024): October 2024
Publisher : UPT Bahasa Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jeltim.v6i2.68513

This research article provides an examination of the challenges faced by students during the composition of procedure texts. It aims to uncover factors influencing students' proficiency. Utilizing thematic analysis, we analyzed students' written texts and conducted interviews with junior high school English teachers and students, providing a holistic perspective. Four significant areas of difficulty were identified: minimal word and phrase variations, lack of clarity and precision, ignorance of writing mechanisms, and challenges with grammar and spelling. These challenges provided insights into the recurring patterns of students"™ writing. Factors contributing to these difficulties included motivational factors, language environment, language proficiency, and formal presentation aspects. Student motivation to write and seek comments was hindered by low intrinsic motivation. Students' writing talents were also shaped by language exposure and proficiency, which varied by background and experience. Additionally, formal presentation characteristics and technology-based teaching strategy restrictions underlined the need for improved infrastructure to accommodate various and engaging teaching methods. In conclusion, the research sheds light on the intricate landscape of students' struggles in composing texts and underscores the urgency of providing tailored teaching strategies to address these challenges effectively while also keeping the influencing factors in consideration.

PEMBERDAYAAN DAN PARTISIPASI MASYARAKAT DALAM PENDIDIKAN MENUJU SEKOLAH BERMUTU fawwaz, Alwan; Susanty, Susanty
Jurnal Terapung : Ilmu - Ilmu Sosial Vol 6, No 2 (2024): September 2024
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al-Banjari Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jt.v6i2.16291

Pendidikan tidak hanya tanggungjawab pemerintah, tetapi juga tanggungjawab orang tua dan masyarakat. Partisipasi masyarakat dan orang tua di sekitarnya sangat penting. Di satu sisi sekolah memerlukan masukan dari masyarakat dalam menyusun program yang relevan, sekaligus memerlukan dukungan masyarakat dalam melaksanakan program tersebut. Penyelenggaraan pendidikan akan lebih berhasil jika adanya kerjasama antara sekolah dengan orang tua dan masyarakat. Berbicara tentang pendidikan, hal pertama yang tersirat dalam benak kita adalah “sekolah”. Sekolah dalam hal ini merupakan suatu organisasi publik yang memberikan jasa layanan pendidikan bagi masyarakat dalam rangka peningkatan kualitas individu masyarakat itu sendiri. Oleh karenanya, menjadi suatu hal yang wajar apabila masyarakat menuntut tersedianya “sekolah yang baik” yang tercermin dari efektifitas kinerja sekolah yang bersangkutan. Sangat disadari bahwa secara nasional, pendidikan bermutu masih menjadi masalah krusial di negara ini. Masalah mutu pendidikan memang masih menjadi persoalan utama. Perbaikan mutu yang hampir menjadi program setiap menteri yang duduk di Kementerian Pendidikan dan Kebudayaan, tapi sampai sekarang belum tuntas. dibantu oleh komite dan paguyuban wali murid yang bertindak sebagai partner sekolah dalam melaksanakan kegiatan di sekolah supaya berjalan dengan lancar.Kata Kunci: Pemberdayaan Masyarakat, Pendidikan Berkualitas, Peningkatan Mutu Pendidikan

Pengaruh Ease of Use dan Information Quality Terhadap Repurchase Intention Pengguna Aplikasi Grabfood Di Kota Mataram Kusuma, Akla Triyan; Suarti, Ayu Ritha; Fitri, Elsa; Susanty, Susanty
JURNAL SOSIAL EKONOMI DAN HUMANIORA Vol. 10 No. 3 (2024): JURNAL SOSIAL EKONOMI DAN HUMANIORA
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jseh.v10i3.589

This research aims to determine the effect of Ease of Use and Information Quality on Repurchase Intention of Grabfood application users in Mataram City. The population in this study were all Grabfood application users in Mataram City, while the sample for this study was 100 Grabfood users using purposive sampling techniques. This type of research is associative research. Data processing in this study used SPSS 25.0 for Windows, where validity tests, reliability tests, classical assumption tests, multiple linear regression tests, significance tests (t tests) and coefficient of determination (R2) were carried out. Based on the research results, it shows that: (1) Ease of Use has a positive and significant effect on Repurchase Intention (2) Information Quality has a positive and significant effect on Repurchase Intention

Exploring the Representation of Gender in Foklores from Central Kalimantan Wulandari, Indah; Sujiyani, Erma; Retsi, Olga Dona; Susanty, Susanty
General English Education Vol 5 No 1 (2025): EBONY- Journal of English Language Teaching, Linguistics, and Literature
Publisher : The Study Program of English Education of Palangka Raya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/ebony.v5i1.17820

Folklores are frequently used as teaching media at schools. However, they are suspected to contain gender stereotypes. This study aims to examine the gender representation and gender stereotypes in 28 folklores from Central Kalimantan published in two books by the Ministry of Education and Culture of the Republic of Indonesia in 1982 and 1995. Gender representation is explored through the roles and occurrence of the characters in the folklores, while four categories of gender stereotypes (personality traits, domestic behaviors, occupations, and physical appearances) are used to investigate the gender stereotypes attached to the male and female characters in the stories. The results show there is an imbalanced representation of male and female characters in Central Kalimantan folklores; from the total of 106 characters, male representation has almost twice in occurrence (60.4%) compared to the female one (39.6%). Mostly, males are the main characters in the stories having both positive or negative roles, and the females have only inferior roles. The gender stereotypes of patriarchy are found to be promoted through the characters’ description in the folklores. Therefore, to represent the proper concept of gender equality through stories, a critical view is needed in selecting folklores as teaching media at schools.

TEACHERS' ATTITUDES TOWARDS THE IMPLEMENTATION OF EXTRAMURAL ENGLISH (EE) IN ENGLISH AS FOREIGN LANGUAGE (ELT) Yulitriana, Yulitriana; Emeral, Emeral; Karani, Elanneri; Susanty, Susanty; Syeba, Sulamit; Aderia, Rikha; Wulansari, Angely Eunike
Premise: Journal of English Education and Applied Linguistics Vol 14, No 1 (2025): Premise Journal: e-ISSN 2442-482x, p-ISSN 2089-3345
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/pj.v14i1.11267

Teachers have essential roles in facilitating ELT, and their attitudes towards the approaches applied will contribute to the success of language learning. The objective of this research was to examine teachers' attitudes towards the implementation of Extramural English (EE) in ELT. One-shot survey research was conducted in rural areas of a regency in Central Kalimantan, Indonesia, with 60 high school English teachers participating as the sample. A survey incorporating both closed- and open-ended questions was administered to gather data. The data analysis involved calculating the percentages from the closed-ended responses, followed by a detailed explanation of the teachers' answers to the open-ended questions. The findings indicate that most teachers have integrated Environmental Education (EE) activities throughout all phases of English Language Teaching (ELT). They employ EE, particularly in conjunction with Technology, due to its ability to broaden their knowledge, improve their skills, effectively engage students' interests, and facilitate English learning. Furthermore, the advantages of utilizing EE significantly surpass the associated challenges. Therefore, developing English Language Teaching (ELT) to meet students' English as an additional language (EAL) needs is crucial, as EAL plays a significant role in students' language development. In conclusion, teachers have a positive attitude towards implementing English Education (EE) in English Language Teaching (ELT) since it positively contributes to ELT.

Title

Found 19 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 19 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 19 Documents
Search