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All Journal Lingua Cultura Majalah Kulit, Karet, dan Plastik Jurnal Sapa Laut JURNAL PENDIDIKAN TAMBUSAI Humaniora Jurnal Kesehatan Wira Buana Tax Literacy and Leadership Agility: Indigenous Peoples Awareness in Paying Taxes Journal Of Human And Education (JAHE)

Esti Rahayu

Faculty of Veterinary, Bogor Agricultural Institute Herbarium Bogoriense Cibinong Science Center (CSC) Jl. Raya Jakarta-Bogor Km. 46 - CIBINONG, 16911

Author-ID : 354898

Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Pengaruh konsentrasi pigmen indigo pada pewarnaan (dyeing) dan pengulangan warna (topping) pada kulit bludru Kasmudjiastuti, Emiliana; Cahyani, Sofia Budi; Rahayu, Esti; Subandriyo, Subandriyo
Majalah Kulit, Karet, dan Plastik Vol 23, No 1 (2007): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Paste indigo pigment having blue colour was produced from fermentation of indigofera tinctoria leaves and twigs. Having was very popular dye and was used especially in textile industries and leather industries of fur. The aim of the study was to the optimum concentration of indigo pigmen on dyeing of suede leather. The materials used in study were crust suede leather, indigo pigmen, wetting agent, soda ash, ammonia, formic acid sulfonated oil, and redactors such as palm sugar. The dying of leather using indigo pigmen was principally similar with common dyeing and pH of indigo is 11.5, however pH on several steps must adjusted. Variation of the concentration of in dyeing was 0.5, 1, and 1.5% respectively. Performance test were of conducted for dye penetration, colour rub fastness (dry, wet), sweat resistant, and sun light resistant for 6, 13, and 20 hours respectively. The results showed that the optimum concentration of pigmen indigo was 9% dyeing and 1 % for topping with level dye, indicated appropriate penetration dye into the cross-section leather, no fading was performed by dry colour fastness test (score 4/5) and wet colour fastness test (score 4), good sweat resistant (score 5), no colour fading on the exposure to sun light for 20 hours (score 4).Â Keywords: Indigofera tinctoria, pigment, indigo, âsuedeâ leather.Â Â ABSTRAKÂ Pasta pigmen indigo merupakan zat warna biru yang dihasilkan dari fermentasi daun dan ranting tanaman Indigofera tinctoria. Pemanfaatan pigmen indigo pernah popular terutama dalam industri tekstil dan pernah pula digunakan untuk pewarnaan kulit terutama pada kulit samak bulu (fur). Tujuan penelitian adalah untuk mendapatkan konsentrasi optimum pigmen indigo pada proses pewarnaan kulit suede (bludru). Bahan penelitian terdiri atas kulit kras bludru dari kulit kambing, pigmen indigo, bahan pembasah, soda abu, amoniak, asam formiat, minyak sulfonasi dan reduktor (gula merah). Pewarnaan kulit menggunakan pigmen indigo pada prinsipnya sama dengan proses perwarnaan kulit pada umumnya, tetapi karena pigmen indigo bersifat basa (pH = 11,5), maka pH pada beberapa tahapan proses perlu diatur.Â Variasi konsentrasi pigmen indigo pada pewarnaan kulit berturut-turut 3,6, dan 9% dan konsentrasi pigmen indigo pada topping berturut-turut 0,5; 1,0; dan 1,5%. Uji mutu kulit hasil pewarnaan meliputi uji kerataan warna, tembus cat, ketahanan gosok cat (kering dan basah), ketahanan keringat, dan ketahanan terhadap sinar mathari selama berturut-turut 6, 13, dan 20 jam. Hasil penelitian menunjukkan bahw akonsentrasi optimum dicapai pada penggunaan 9% pigmen indigo pada dyeing Â dan 1% pada topping dengan hasil pewarnaan rata, warna cukup tembus kedalam penampang kulit, tidak luntur terhadap ketahanan gosok cat secara kering (nilai 4/5) dan secara basah (nilai 4), ketahanan terhadap keringat sangat baik (nilai 5), dan warna tidak pudar oleh sinar matahari selama 20 jam (nilai 4).Â Kata kunci: Indigofera tinctoria, pigmen indigo, kulit kras bludru.

Reading Journal as A Way to Improve Studentsâ€™ Comprehension toward A Textbook Reading Material Winiharti, Menik; Herawati, Agnes; Rahayu, Esti
Lingua Cultura Vol 8, No 2 (2014): Lingua Cultura Vol. 8 No. 2
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/lc.v8i2.449

Reading journal is one way to record studentsâ€™ independent learning based on text they read. This study was conducted to find out the studentsâ€™ level of reading comprehension through some notes written in the reading journal, the extent to which the activity of writing reading journals improved studentsâ€™ reading comprehension, whether the students got benefit from reading journal. There were 104 respondents coming from four different departments in Bina Nusantara University were asked to read a text related to the subject they learned in a certain session. Then they were assigned to write a journal that records the things they had read. When this task was finished, the lecturer ran a quiz containing related questions to check whether they really understood the content of the text. Afterwards, students were to fill in a questionnaire regarding their opinion on the impact of the reading journal toward their reading comprehension. The findings indicate that more than half of the participants appear to understand the material well, and the task plays a certain role in improving studentsâ€™ understanding. The most crucial thing is that most students think they get benefit by writing the reading journal.

Pengaruh ammonia sebagai âkilling agentâ pada pengecatan bulu kulit kelinci Oetojo, Bambang; Lutfi, Muchtar; Rahayu, Esti
Majalah Kulit, Karet, dan Plastik Vol 4, No 8 (1989): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The objective of this research is to find out the effluence of ammoniumÂ hydroxide as killing agent to the uniformity and fintness of the colour of rabbit fur after dyeing. This research made use of 27 pieces of green salted rabbit skin having white colour. In killing process the rabbit fur was treated recpectively in a liquar of 10, 15 and 20 cubic centimetres of ammonium hydroxide of 22% strength in one litre of water, furthermore the fur was dyed. The dyed fur was visually examined for the uniformity and fitness of the colour of the dyed fur, and physically tested for the rub fastness of the dye.The highest value of rub fastness achieved by the dyed rabbit fur treated in 20 cubic centimetres of ammonium hydroxide in one litre of water. It advisable to use 20 cubic centimetres of ammonium hydroxide of 22 % strength in one litre of water as killing agent in rabbit fur dyeng process.Â

Penelitian jumlah penggunaan bating agent pada penyamakan kulit sarung tangan (fashion glove) dari kulit kelinci Lutfi, Muchtar; Widhiati, Widhiati; Rahayu, Esti; Nainggolan, Kasmin
Majalah Kulit, Karet, dan Plastik Vol 9, No 16 (1994): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The objective of this research is to identify the quatity of bating agent used in tanning rabbit skins to be glove leather, to make use rabbit skins which can not be tanned to fur rabbit skin leather. The materials used in this research were of 40 pieces of lokal salt preservated rabbit skins originated from Yogyakarta having quality III and IV. They were grouped into four and the groups consisted of ten pieces each were tanned to be fashion glove leather using 4% formaline as pretanning agent and followed by chrome tanning agent as the retanning agent. Before carrying out both tanning processes bating was done on them using Pancreol Bate as bating agent. The quantity of bating agent added was varried as 0,65%, 1,2%, 1,8% and 2,4%. The process used was of usually carried - out by IRDLAI. The leather produced were tested on their sotfness, with sheepskin glove leather was used as the measuring- rod; their tensile strength resistance and flexibility with SII. 0061 â 74 (Quality and test method for goatsheep skin glove and garment leather) as the standard of comparison. The test results were statistically evaluated. A conclusion can be down from this research that by using 0,6% Pancreol Bate on bating process, soft glove leathers having good tensile strength and flexibility which fulfill the requirements of SII. 0061 - 74 can be produced.

Kulit ikan balida sebagai industri bahan baku industri barang kulit Lutfie, Muchtar; Rahayu, Esti; Widhiati, Widhiati
Majalah Kulit, Karet, dan Plastik Vol 14, No 26 (1999): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

This study is aimed at detecring of physical properties (tensile strength and elongation) of balida fosh skin lather (Natopterus chitala sp). Material used in this study is nfive sides from Pontianak (West Kalimantan). They were then tracted with Chromosal B as tanning agent and Irgata I.V as retanning agentÂ to be finitshed leather. On testing the finishedÂ leather it is found that there is not aby significant different betweeb the dry and salted balida fish skin leather on their fisical properties of tensile strength and clongation, the mean of tensile streght of dry preserved balidaÂ skin lather and saliedÂ balida akin leather of which respect tively are 226,82 kg/cm2 and 43,2% respecrively. Viewed from thye test result, it is obviously that balida skin leather to be used material pf leather goods.Â Â INTISARIÂ Â Â Â Â Â Â Â Â Â Â Â Penelitian ini bertujuan untuk mengetahyu sifat fixis (kekuatan tarik dan kemuluran) kulit jadi kulit ikan balida (Natopterus vhitala sp). Dengan menggunakan 5 lembar kulit ikan balida aweyan kering dan 5 lembar awertan garaman yang berasal dari Pontianak (Kalimantan Barat) disamak hingga kulit jadi dengan menggunkan Choromosal B sebagai bahan penyamak dan Irgatan LV sebagai bahan penyamak ulang (retanning). Kulit jadi hasil penelitian diuji, didapatkan kekuatan tarik dan kemuluran yang tidak ada beda nyata antara awetan kering dan awetan garam, dengan nilai rataa n kekuatan tarik asal awetan kering :226, 85kg/cm2 dan awetan garam : 234,07kg/cm2, nilai rataan jemukurasn 46,8% dan 43,2%. Dilihat dari hasil uji kulitÂ jadi dari kulit ikan balida bias dimanfaatkan untuk bahan baku industry barang kulit.

Perbedaan jenis bahan penyamak terhadap sifat fisik kulit katak bull frog Lutfie, Mochtar; Meiyanti, Meiyanti; Rahayu, Esti; Endah, Nur
Majalah Kulit, Karet, dan Plastik Vol 12, No 23 (1997): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The Obyective of this research is to study the effects of various tanning agents on the qualities of leather made from Bull Frog skin. Fifteen pieces of wet salted Bull Frog from Malang were tanned with several tanning agents, wich are mineral (10% Chromosal B), vegetable (10% Mimosa extract) and synthetic tensile strengths and elongations. Its turned out that vegetable tanning agent gave the higest tensile strength (279,62 kg/cm2), while mineral tanning agent gave the lowest one (183.04 kg/cm2). It showed that the type of tanning agent used significantly effects the tensile strength of the leather produced (p â¤ 0.005). On the other hand, mineral tanning agent gave the higest elongation (105.20%). While vegetable tanning agent gave the lowest one (91.20%). This result implied that the type of tanning agent used has a significant effect on the elongationÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â (p â¤ 0.01).Â Â INTISARIÂ Penelitian ini bertujuan untuk mengetahui kulit jadi dari kulit katak Bull Frog yang disamak dengan berbagai jenis bahan penyamak. Dengan menggunakan 15 lembar kulit kata Bull Frog awet garam basah yang berasal dari daerah Malang, disamak hingga kulit jadi dengan menggunakan bahan penyamak mineral (10% Chromosal B), nabati (20% minosa ekstrak) dan sintetis (20% Irgatan LV). Kulit jadinya diuji secara fisis tentang kekuatan tarik dan kemuluran. Didapatkan hasil kekuatan tarik yang tertinggi adalah yang menggunakan bahan penyamak nabati (279,62 kg/cm2), yang terendah bahan penyamak mineral (183,04 kg/cm2), yang berarti penggunaan bahan penyamak yang berbeda berpengaruh nyata (p â¤ 0,05) terhadap kekuatan tarik. Hasil uji kemuluran nilai tertinggi didapatkan pada penyamakan yang menggunakan bahan penyamak mineral (105,20 %) dan terendah oleh bahan penyamak nabati (91,20%). Perbedaan bahan penyamak berpengaruh sangat nyata (p â¤ 0,01) terhadap kemuluran.

Pengaruh jumlah Cr2O3 terhadap kelemasan kulit atasan sepatu dari kulit biawak finish natural Lutfie, Muchtar; Widhiati, Widhiati; Rahayu, Esti
Majalah Kulit, Karet, dan Plastik Vol 12, No 22 (1996): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The study is aimed at detecting the amount of Cr2O3 in percent added in the tanning of lizard skins for natural finished shoe upper leather. The materials used in this study are 36 pieces of dry preservated lizard skins which are tanned to natural finished shoe upper leather, while the tanningÂ agent used are Cr2O3 that added in veried amount as 0,5 %; 1,0 %; 1,5 % and 15 % Basyntan DLX. Using varianâs analysis, it is found that there is a significant difference in the softness of the leather caused by the amount of Cr2O3 added. The use of 1,5% Cr2O3 obviously shows the best result. Â Â INTISARI Â Â Penelitian ini bertujuan untuk mengetahui jumlah Cr2O3 (%) yang digunakan pada penyamakan kulit biawak untuk kulit atasan sepatu finish natural. Dengan menggunakan 36 lembar kulit biawak yang diawet kering diproses untuk kulit jadi untuk kulit atasan sepatu dengan finish natural. Bahan penyamak yang digunakan adalah Cr2O3 dengan variasi 0,5 %; 1,0 %, 1,5 % serta 15 % Basyntan DLX. Dengan menggunakan analisa variasâs ternyata didapatkan ada beda sangat nyata kelemasan akibat pengaruh perbedaan jumlah Cr2O3 yang diberikan. Penggunaan 1,5 % Cr2O3 adalah jumlah yang terbaik.Â

Penerapan pemakaian baychrome â 2420 sebagai bahan penyamak krom pada kulit domba/kambing (wet blue) Muchtar, Lutfie; Surip, Hernadi; Rahayu, Esti; Susanto, Heru Budi; Karyono, Karyono
Majalah Kulit, Karet, dan Plastik Vol 12, No 25 (1998): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

The objective of this research was to know the shrinked temperature of wet blue from goat an sheep skins that tanned by baychrome 2420, and for know amount of Cr2O3 was absorbed and axpelled. It was used 40 pieces goat and sheep skins (wet salted) preserved were tanned until wet blue used chromosal B and baychrome 2420 as chromeÂ tanning and the others auxiliary material were Na2S, lime, Oropon OR, NACl, HCOOH, H2SO4 etc. The results of this research showed that baychrome 2420 can used as material chrome tanning that wished for wet blue was the mean of shrinked temperature 100,670C, mean of Cr2O3 content 3,99%, and mean of Cr2O3 residue was expelled 1,54 g/l. Â INTISARIÂ Penelitian ini bertujuan untuk mengetahui tingkat kemasakan (shrinked temperature) kuit wet blue dari kulit kambing / domba yang dimasak dengan baychrome 2420, serta untuk mengetahui jumlah Cr2O3 yang terserap dan terbuang. Dengan menggunakan 40 lembar kulit kambing / dombaÂ awet garaman diproses hingga wet blue dengan menggunakan chromosal B dan baychrome 2420 sebagai bahan penyamak krom serta bahan pembantu diantaranya Na2S, kapur, oropon OR NaCl, HCOOH, H2SO4, dan lain-lain. Dari hasil penelitian didapatkan bahwa baychrome 2420 dapat digunakan sebagai bahan penyamak yang menghasilkan wet blue dengan suhu kerut rata-rata 100,670C, kadar Cr2O3 rata-rata 3,99 % serta Cr2O3 yang terbuang rata-rata 1,54 g/l.

Riding Out the Storm: Out-of-Field Teaching Practice in Indonesia Rahayu, Esti; Osman, Shuki
Humaniora Vol 10, No 2 (2019): Humaniora
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/humaniora.v10i2.5628

As out-of-field teachers existence led to change in teachers, this research aimed to explore their commitment to learning and teaching, and how their schools supported them. Five Indonesian teachers who started teaching as out-of-field teachers and their school leaders were interviewed for this research. The qualitative case study was employed to explore the problem through interviews, classroom observations, and document analysis. The findings reveal that the initial commitment to teaching, learning, and growing is an investment for further actions throughout the teaching practice. The schools provide necessary assistance through the induction and during their in-service in the provided and requested professional learning, being trusted and acknowledged by school leaders, and having resourceful colleagues. From their schools’ support, the out-of-field teachers become more knowledgeable and remain as teachers for an extended time.

Penerapan Metode Show and Tell Untuk Meningkatkan Keterampilan Berbicara Siswa Kelas V UPT SDN 11 Tarowang Kecamatan Tarowang Kabupaten Jeneponto Idrus, Nur Abidah; Rahayu, Esti; B, Lutfi; Saharullah, Saharullah
Jurnal Pendidikan Tambusai Vol. 7 No. 3 (2023): Desember 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v7i3.10721

Penelitian ini dilatar belakangi oleh rendahnya keterampilan berbicara siswa kelas V UPT SDN 11 Tarowang pada mata pelajaran Bahasa Indonesia. Tujuan penelitian ini adalah untuk mengetahui penerapan metode show and tell untuk meningkatkan keterampilan berbicara pada mata pelajaran Bahasa Indonesia di kelas V UPT SDN 11 Tarowang. Jenis penelitian ini adalah Penilitian Tindakan Kelas (PTK) yang dilaksanakan sebanyak dua siklus dan setiap siklus dua kali pertemuan. Setiap siklus terdiri dari 4 tahap, yaitu perencanaan, tahan pelaksanaan, tahap observasi, dan tahap refleksi. Subjek penelitian ini adalah guru dan siswa kelas V UPT SDN 11 Tarowang Sebanyak 22 siswa dan satu guru. Teknik pengumpulan data dalam penelitian ini dikumpulkan dengan observasi, dokumentasi dan tes. Hasil penelitian ini menunjukkan bahwa penerapan metode show and tell dapat meningkatkan kemampuan berbicara siswa kelas V UPT SDN 11 Tarowang Kecamatan Tarowang Kabupaten Jeneponto. Hal ini dibuktikan dengan terjadinya peningkatan pada ketuntasan belajar keterampilan berbicara pada siswa kelas V UPT SDN 11 Tarowang.

Co-Authors Adan, Laode Muhammad Hasrul Agnes Herawati Ari, Nugroho B, lutfi Bambang Oetojo, Bambang Dede Nasrullah Emiliana Kasmudjiastuti, Emiliana Hadi, Suyatno Herlin Fitriana Kurniawati Herlin Fitriani Kurniawati Hernadi Surip, Hernadi Heru Budi Susanto, Heru Budi Juni Andri Kariny, Elsy Juwita Sari, Etsa Karyono Karyono Kasmin Nainggolan, Kasmin kosilah, Kosilah Krisna Rendi Awalludin Lira, Lira Lutfie Muchtar, Lutfie Maria Ulfa Mayunita, Sry Meiyanti Meiyanti, Meiyanti Menik Winiharti Mochtar Lutfie, Mochtar Muchtar Lutfie, Muchtar Nur Abidah Idrus, Nur Abidah Nur Endah, Nur Nurgayah, Wa Osman, Shuki Purwanggi, Annisa S, Salwiah Saharullah, Saharullah Sofia Budi Cahyani, Sofia Budi SUBANDRIYO SUBANDRIYO Sukadiono, Sukadiono Uzdah Wulandari, Putri Widhiati Widhiati, Widhiati

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