Articles

ADSORPSI BAHAN ORGANIK ALAMI (BOA) AIR GAMBUT PADA TANAH LEMPUNG GAMBUT ALAMI DAN TERAKTIVASI: STUDI KESETIMBANGAN ISOTERM DAN KINETIKA ADSORPSI Mahmud, Mahmud; Notodarmojo, Suprihanto; Padmi, Tri; Soewondo, Prayatni
Jurnal Infoteknik Vol 13, No 1 (2012): INFO-TEKNIK
Publisher : Jurnal Infoteknik

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Tanah lempung gambut (TLG) merupakan tanah lempung yang berada di bawah lapisan tanah gambut. Keberadaannya di Indonesia sangat berlimpah dan potensial digunakan sebagai adsorben murah. Penelitian ini bertujuan untuk menentukan model isoterm dan model kinetika yang sesuai pada adsorpsi bahan organik alami (BOA)terhadap TLG, sehingga dapat membantu mempelajari mekanisme penyisihan yang terjadi. Fraksi BOA yang hidrofobik dan BOA dengan BM besar memberikan kontribusi yang paling besar terhadap warna air gambut. Pada pH asam, komponen BOA air gambut dengan SUVA rendah (fraksi hidrofilik dan BM rendah) lebih baik disisihkan oleh adsorben TLG, dan sebaliknya pada pH yang lebih tinggi komponen BOA dengan SUVA tinggi yaitu BOA dengan karakter hidrofobik, aromatik dan BM tinggi dapat disisihkan dengan lebih baik. Pada tahap-tahap awal adsorpsi sampai waktu kontak 10 menit, fraksi BOA dengan SUVA besar merupakan fraksi BOA yang paling mudah diadsorp oleh TLG, dan pada tahap selanjutnya yaitu waktu kontak >10menit, TLG dapat mengadsorp fraksi BOA dengan SUVA kecil. Model isoterm Langmuir merupakan model isoterm yang sesuai untuk adsorpsi BOA air gambut terhadap TLG alami, sedangkan model isoterm Freundlich sesuai untuk adsorpsi BOA terhadap TLG teraktivasi dan PAC. Model kinetika pseudo-second-order adalah model kinetika yang cocok digunakan untuk adsorpsi BOA air gambut terhadap ketiga jenis adsorben: TLG alami, TLG teraktivasi dan PAC.
PENGARUH KONSENTRASI KITOSAN TERHADAP KARAKTER MEMBRAN KITOSAN Rohman, Taufiqur; Lili Utami, Umi Baroroh; Mahmud, Mahmud
Jurnal Sains dan Terapan Kimia Vol 3, No 1 (2009)
Publisher : Jurnal Sains dan Terapan Kimia

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Telah dilakukan penelitian tentang pengaruh konsentrasi kitosan terhadap karaktermembran kitosan. Penelitian ini bertujuan untuk mengkaji pengaruh konsentrasi kitosanterhadap permeabilitas, permselektivitas, dan modulus Young. Penelitian juga bertujuanuntuk mengetahui nilai Molecular Weight Cut-Off (MWCO) dan morfologi membrankitosan. Pembuatan larutan cetak membran digunakan dua komponen yaitu kitosansebagai polimer, dan asam asetat sebagai pelarut. Sintesis membran kitosan dilakukandengan teknik inversi fasa, yaitu dengan proses rendam endap. Pada larutan dope,digunakan kitosan dengan variasi konsentrasi 2%, 3%, 4%, 5% dan 6% (b/b).Karakterisasi membran meliputi uji permeabilitas, permselektivitas, MWCO, modulusYoung, dan analisis morfologi dengan Scanning Electron Microscope (SEM). Hasilpenelitian menunjukkan bahwa permeabilitas tertinggi dimiliki membran dengankonsentrasi larutan cetak 2% (b/b), sedangkan permselektivitas tertinggi dengankonsentrasi larutan cetak 6% (b/b), untuk nilai Molecular Weight Cut-Off nya adalah 50%,dan modulus Young tertinggi diperoleh dengan konsentrasi larutan cetak 2% (b/b).Analisis morfologi membran menunjukkan bahwa konsentrasi larutan cetak 5% (b/b)merupakan komposisi terbaik menghasilkan struktur membran dengan perbesaran poriyang teratur.Kata kunci : membran kitosan, permeabilitas, permselektifitas, MWCO, morfologi
PENGEMBANGAN BUKU AJAR KIMIA SMA/MA KELAS XI SEMESTER II DALAM UPAYA MENINGKATKAN HASIL BELAJAR DAN MENUMBUHKEMBANGKAN KARAKTER SISWA Mahmud, Mahmud; Sudrajat, Ajat; Napitupulu, Shofia Rija
JURNAL PENDIDIKAN KIMIA (JPKim) Vol 7, No 1 (2015): April 2015
Publisher : JURNAL PENDIDIKAN KIMIA (JPKim)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v7i1.5502

Abstract

AbstractThis study aims to develop of chemistry textbooks that used in Eleventh Grade of Senior high school of second semester based on 2013 curriculum to improve students’ achievement and develop students’ character. The samples of this study are SMAN 1 Lubuk Pakam, SMAN 2 Lubuk Pakam, Nusantara Senior High School, MAN Lubuk Pakam. The sample treatment is divided into two, experimental class and control class. The Data collection is done with objective tests, observation sheets during the learning process is done as well as a questionnaire to measure the evolving character at the end of learning. Data were analyzed using SPSS 19 with significance level 0.05. To determine difference in students’ achievement and students’ character by using Cooperative problem Based Learning. The effectiveness score of textbooks quality was 84.37 and KTSP textbook was 74.41. In addition, this research improves students’ achievement and character such as responsibility, creative, communicative and psychomotor. The students’gain achievement of the experiment class was 74.92 and the control class was 67.11. The effectiveness score of communicative character in experiments class was 78,08 and the controll class was 74.26, the creative character in experiment class was 78.28 and the controll class was 75.12, and the responsibility character in experiment class was 79.51 and the controll class was 75.30. The results of this study of indicate that the chemistry textbook was develop in this study can to to improve students’ Achievement and develop students’ character.Kata Kunci : Buku Ajar Kimia, Cooperative Problem Based Learning, Hasil Belajar, Tanggung Jawab, Kreativitas, Komunikatif, Psikomotorik
PEMBELAJARAN SENI MUSIK DENGAN MULTIMEDIA DALAM PENINGKAATAN MEMBACA NOT BALOK PADA SISWA KELAS VI SDN 3 TAMANWINANGUN TAHUN AJARAN 2013/2014 mahmud, mahmud
KALAM CENDEKIA PGSD KEBUMEN Vol 6, No 6 (2017): KALAM CANDEKIA PGSD KEBUMEN
Publisher : KALAM CENDEKIA PGSD KEBUMEN

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Abstract: Learning Music by Using Multimedia to Improve Reading Music Notation Sixth Grade Students Of SDN 3 Tamanwinangun in The Academic Year 2013/2014. The purpose of this study was to describe the use of multimedia in a musical note and the increasing of students’ability to read music notation. The research was conducted in three cycles with each cycle consisting of planning, action, observation, and reflection. The subjects were  students from the sixth graders of SDN. Sources of data used in this study were students, teachers, and observers . The validity of the data using triangulation techniques and triangulation of data collection techniques. The conclusion of this study is by using multimedia as prejected can improve  the sixth grader of SDN 3 Tamanwinangun students achievement in reading musical notation in the academic year 2013/2014. Key words : Multimedia , reading, musical notation Abstrak: Pembelajaran Seni Musik dengan Multimedia dalam Peningkaatan Membaca Not Balok  pada Siswa Kelas VI SDN 3 Tamanwinangun Tahun Ajaran 2013/2014. Tujuan penelitian ini adalah untuk Mendeskripsikan penggunaan multimedia dalam peningkatan membaca not balok dan mendeskripsikan peningkatkan kemampuan membaca not balok. Penelitian dilaksanakan dalam tiga siklus dengan tiap siklus terdiri dari perencanaan, tindakan, observasi, dan refleksi. Subjek penelitian ini adalah siswa kelas VI SD. Sumber data yang digunakan dalam penelitian ini adalah siswa, guru, dan observer. Validitas data menggunakan teknik triangulasi sumber dan triangulasi teknik pengumpulan data. Simpulan penelitian ini adalah pengggunaan multimedia yang dilaksanakan sesuai skenario dapat meningkatkan membaca notasi balok pada siswa kelas VI SD Negeri 3 Tamanwinangun tahun ajaran 2013/2014. Kata kunci: Multimedia, membaca, notasi balok
PURWARUPA PEMBELAJARAN MANDIRI SISTEM APLIKASI AKUNTANSI UMKM BERBASIS WEB DALAM PEMBERDAYAAN USAHA MASYARAKAT JAWA TENGAH Lestiawan, Heru; Mahmud, Mahmud
Techno.Com Vol 14, No 1 (2015): Februari 2015 (Hal. 1-78)
Publisher : LPPM Universitas Dian Nuswantoro

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Permasalahan mendasar dari pengelola UMKM adalah lemahnya pengetahuan tentang akuntansi dan pembuatan format laporan keuangan yang akuntabel. Selain itu salah satu kendala pelayanan di Balai Pelatihan Koperasi dan UMKM propinsi Jawa Tengah adalah waktu diklat yang membutuhkan waktu selama satu minggu sedangkan pelaku UMKM harus meninggalkan usahanya dan ini akan berdampak pada proses usahanya. Tujuan penelitian ini adalah merancang bangun purwarupa pembelajaran mandiri sistem aplikasi akuntansi UMKM berbasis web yang mendukung UMKM untuk meningkatkan usaha dan menghasilkan laporan keuangan yang memenuhi standar akuntansi yang dipersyaratkan oleh lembaga keuangan. Pembelajaran Mandiri Sistem Aplikasi Akuntansi berisi pembelajaran akuntansi dan aplikasi akuntansi UMKM yang dapat menyusun laporan keuangan yang akuntabel yang dapat dipelajari berbasis web sehingga dapat diakses kapanpun dalam rangka peningkatan usaha masyarakat Jawa Tengah. Hasil penelitian adalah dibangunnya software purwarupa  pembelajaran mandiri sistem aplikasi akuntansi berbasis web bagi UMKM. Software  pembelajaran mandiri sistem aplikasi akuntansi berbasis web ini, diharapkan memberikan kemudahan UMKM dalam mengelola berbagai sumber daya keuangan di UMKM yang bersangkutan, untuk lebih efektif, efisien, selain itu mempermudah pengendalian dan pembinaan terhadap UMKM Provinsi Jawa Tengah. Kata kunci: UMKM, aplikasi, akuntansi
Customary Right Compensation and Forest Villages Development Programs of Mangrove Company at Bintuni Bay Papua Barat Wahyudi, Wahyudi; Tokede, Max Jondudago; Mardiyadi, Zulfikar; Tampang, Ana; Mahmud, Mahmud
JURNAL MANAJEMEN HUTAN TROPIKA Vol 20, No 3 (2014)
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jmht.20.3.187

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Mangrove at Bintuni bay offers various services to indigenous communities from ecology, social, and economic. Mangrove also could be harvested accordingly to optimize contributions to indigenous communities welfares. This paper highlights implementation of customary right compensation (CRC), and Forest Villages Development programs (FVDP) of mangrove company at Bintuni Bay, Papua Barat. Company reports and documents related to CRC and FVDP from 1988 to June 2013 were reviewed and analyzed. Field works were conducted to examine the implementation of both programs at four villages of two districts. Sustained mangrove harvest for chipwood production in Bintuni bay for more than 25 years is the most outstanding achievement of mangrove utilization and management in Indonesia. Huge amount of expenditure have been spent out, and given to indigenous communities through the CRC and FVDP programs, respectively. These cover from economic, social, and environmental related programs, manufactured public facilities, scholarships, and others. However, the indigenous communities are remained poor, and failed of being self-sufficient community. It clearly impresses that the main goals to improve the welfare, prosperity of indigenous people are considerable failed. It is presumably that social culture systems, and subsistence agriculture practices contribute to the failing these programs. Mostly, forest communities in Papua are practicing subsistence agriculture, hunting, heavily relying on their surrounding natural resources, and spending all their cash or money instantly for consumption, not for saving, investments or even productive activities. Therefore, several program could be initiated to improve in achieving the CRC and FVDP missions, such as building capacity, providing counselors and strengthen local community governance, which could accelerate of being self-reliant community.Keywords: customary right compensation, forest villages development, mangrove, Bintuni Bay
THE STUDENTS’ PERCEPTION OF THE EFFECTIVENESS OF ENGLISH AND ARABIC TEACHING AND LEARNING AT THE LANGUAGE AND CULTURE CENTER OF STATE INSTITUTE FOR ISLAMIC STUDIES SHEKH NURJATI CIREBON Mahmud, Mahmud; Wiedarti, Pangesti
LingTera Vol 1, No 2: Oktober 2014
Publisher : LingTera

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This study aimed to explore the effectiveness of English and Arabic teaching and learning the Language and Culture Center (LCC) at the State Institute for Islamic Studies Shekh Nurjati Cirebon (SIIS SNJ) based on the students’ perception. The study is to find out students’ opinion toward English and Arabic teaching and learning process and provide beneficial information for the teaching system in the LCC. This study used descriptive survey approach. The subjects were the students of English and Arabic intensive program. The data were collected through the questionnaire The results of the study are as follows. First, the teaching quality indicator is categorized as fairly effective. Second, the generic skills indicator is categorized as less effective. Third, students’ motivation indica-tor is categorized as less effective. Fourth, learning resources is categorized as not effective. Fifth, the assessment appropriateness is categorized as fairly effective. Sixth, the students’ workload is catego-rized as less effective. Seventh, the curriculum content is categorized as less effective. Keywords: students’ perception, teaching and learning, effectiveness.
SIFAT FISIK TANAH DI BAWAH TEGAKAN MANGROVE DI DESA TUMPAPA KECAMATAN BALINGGI KABUPATEN PARIGI MOUTONG Mahmud, Mahmud; Wardah, Wardah; Toknok, Bau
Warta Rimba Vol 2, No 1 (2014)
Publisher : Warta Rimba

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Mangrove forest grows on transition of land and sea area which plants community grow on salty tolerance. Naturally properties of mangrove soil can be a standard on asessing its potency and productivity. The aim of this research was to investigate the physical properties of mangrove forest soil.The usage of  this research are to enrich knowledge about physical properties of mangrove forest soil and may be as an input on mangrove forest development. This research was conducted in mangrove forest of Tumpapa Village Balinggi District, Parigi Moutong Regency, as long as three months (September up to December 2013) by using descriptive method. Descriptive research is research that intends to create a description of situations or events in the field. The placement of sampling plots purposive sampling methode with one plot in each of mangrove forest zonation. Collected soil samples were analyzed of soil textures, colours, and permeabilities. This research results shown that the soil of zone that anytime flooded has dusty-clayey clay texture, upper layer has gray colour, bottom layer has black colour, and slow permeability; the soil of zone with moderate tide flooded has dusty clay texture, upper layer has black colour, bottom layer has brown colour, and moderate permeability; the soil of zone with high tide flooded has dusty clay texture, upper layer has brown colour, and moderate permeability; and soil of transition area has clay texture, upper layer has brown colour, sub layer has black colour, bottom layer has gray colour,and slow permeability. Keywords : Mangrove forest, physical soil properties, zonation
PENGARUH PENDIDIKAN KEPRAMUKAAN DALAM PEMBENTUKAN KARAKTER SISWA DI MTs. ALKHAIRAAT KALUKUBULA Mahmud, Mahmud
Katalogis Vol 5, No 6 (2017)
Publisher : Katalogis

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Formulation of the problem in this research is: "Is the scouting educational influence on the character formation of students in MTs. Alkhairaat Kalukubula? ". While the purpose of this study was to determine and analyze the effect on the formation of character scouting education students in MTs. Alkhairaat Kalukubula. This research is a descriptive study causal approach used surveys. The research sample as many as 52 students at MTs Alkhairaat Kalukubula using census where all the population sampled so that all members and scoutmaster who exercise regularly scouting in MTs Alkhairaat Kalukubula set as the primary data source research. Data were analyzed using simple linear regression analysis with the results showed that the educational scouting has an influence on the character formation of students in MTs. Alkhairaat Kalukubula. It is based on the results of statistical tests test-t, where t-count value is greater than t-table (7.474> 2.021) and a probability of 0.000 at significant level of 95% smaller than a 0.05 (p <0, 05). Means that Ho refused and Hi accepted.
The Effectiveness of Learning Tools of Applied Microbiology to Students Learning Outcomes and Softskill Hasruddin, Hasruddin; Mahmud, Mahmud
Prosiding Seminar Biologi Vol 12, No 1 (2015): Seminar Nasional XII Pendidikan Biologi
Publisher : Prodi Pendidikan Biologi FKIP UNS

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This research aims to determine the effectiveness of applied-microbiology learning tools in problem-based learning to college students learning outcomes and softskill. Limited test by using one group pretest-posttest design was implemented on biology students in FMIPA UNIMED (State University of Medan) with total of sample 32 peoples. The data were collected by test, questionnaire, and observation sheet which futher analyzed by descriptive statistics. The effectiveness of the learning tools for the acquisition of learning outcomes can be calculated using the percentage technique. The findings of this study revealed about 81.25% students learning outcomes categorized as very high and 18.75% included into high category. The process of formation of college student softskill were effective in improving communication skills, work in groups, initiative, difficult to give up, and able to complete the task perfectly.Keywords: Effectiveness, Applied Microbiology, Learning Outcome, Softskill
Co-Authors Abdul Ghofur Ahmad Kurnain, Ahmad Ajat Sudrajat Akhbar Akhbar AKHMAD RIZALI Ambar Kusumandari Ana Tampang Andi Andi Ayi Darmana, Ayi Badaruddin Mu’min, Badaruddin Bambang Nugroho Banin, Ahmad Bau Toknok Buana, Tjandra Budirianto, Heru Joko Chairul Abdi Chairul Irawan Danang Biyatmoko, Danang Deni Darmawan Dewi Rosalinda, Dewi Djuuna, Irnanda A. F. Eddiyanto Eddiyanto, Eddiyanto Ekasari, Fitri Elsa, Yumia Emmy Sri Mahreda Eva Rizka Octiana, Eva Rizka Farah Diena, Nurin Nisa Farich, Ahcmad Fauziyah Harahap Ferry Sobatnu, Ferry Fikri, Miftahul Fitriani, Fathma Forina, Nora Forina, Nora Gunawan Gunawan Hasbiyallah, Hasbiyallah Hasmin Hasmin, Hasmin HasruddiN HasruddiN Heru Joko Heru Lestiawan Herwati Nani, Herwati Iis Siti Jahro Isram, Mohamad Jamilah Jamilah Jaufillaili, Jaufillaili Lilik Damayanti, Lilik Lilis Suryani Masyithah, Husuwatul Max Jondudago Tokede Mijani Rahman, Mijani Mustalifah, Fitri Ria Muthia Elma Napitupulu, Shofia Rija Nunuk Supriyatno Nur baity Nuraeni, Anita Nurin Nisa Farah Diena Pangesti Wiedarti Pratiwi, Amalia Enggar Prayatni Soewondo Rahma, Aulia Rahmah, Dhiyaur Raissa Rosadi, Raissa Ramlan Silaban, Ramlan Rampun, Erdina L.A Rampun, Erdina Lulu Atika Randis Randis, Randis Rd. Indah Nirtha, Rd. Indah Rony Riduan, Rony Rosida, Putri Rusdiansyah, Achmad Sahid Susanto Setiarini, Asri Shofia Lubis, Shofia Sinaga, Grace Eunike Siregar, Erni Juliani Sudarmadji Sudarmadji Suprihanto Notodarmojo Taufiqur Rohman Tri Padmi UMAN SUHERMAN, UMAN Umi Baroroh Lili Utami Wahyudi Wahyudi Wardah Wardah Wunawarsih, Ima Astuty Zainuddin Muchtar ZulfahmiHb, ZulfahmiHb Zulfikar Mardiyadi