Articles
<![CDATA[Immobilizing Chitosan-Stabilized Palladium Nanoclusters on Titanium Dioxide and Their Catalytic Hydrogenation Properties ]]>
<![CDATA[Adlim Adlim]]>
<![CDATA[ Jurnal Matematika & Sains Vol 11, No 4 (2006) ]]>
Publisher : <![CDATA[Institut Teknologi Bandung ]]>
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<![CDATA[Four methods of immobilization of palladium nanoparticles stabilized by chitosan on the surface of titanium have been conducted. The immobilization techniques were denoted with catalysts symbols of [Pd0-chi-TiO2], [Pd0-chi]-TiO2, [Pd0-chi]-TiO2 - cross and Pd0-[chi-TiO2]. Pd0[chi-TiO2] that was prepared by wet impregnation of palladium ions on the surface of titanium-coated chitosan and palladium ions were reduced by refluxing in methanol, produced palladium nano particles catalyst with high catalytic activities compared with those prepared with other methods. The catalytic activity for conversion of nitrobenzene to aniline at 30 oC and 1 atm followed the trend of Pd0-[chi-TiO2] > [Pd0-chi-TiO2] > [Pd0-chi]-TiO2 > [Pd0-chi]-TiO2 - cross. Most of the palladium metal particles in Pd0-[chi-TiO2] were exposed and dispersed with average size of 7.3 nm, while without chitosan, the particles were larger, aggregated and had of low catalytic activity.]]>
<![CDATA[Pengembangan Handout Berbasis Kontekstual pada Materi Faktor-faktor yang Mempengaruhi Laju Reaksi untuk SMA/MA Kelas XI IPA ]]>
<![CDATA[Salfrika, Trio]]>;
<![CDATA[Adlim, .]]>;
<![CDATA[Hanum, Latifah]]>
<![CDATA[ Jurnal Ilmiah Mahasiswa Pendidikan Kimia Vol 1, No 1 (2016): Jurnal Ilmiah Mahasiswa Pendidikan Kimia ]]>
Publisher : <![CDATA[Jurnal Ilmiah Mahasiswa Pendidikan Kimia ]]>
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<![CDATA[ABSTRAKTelah dilakukan penelitian dengan judul Pengembangan Handout Berbasis Kontekstual pada Materi Faktor-faktor yang Mempengaruhi Laju Reaksi untuk SMA/MA Kelas XI IPA. Penelitian ini bertujuan untuk menghasilkan bahan ajar handout berbasis kontekstual pada materi faktor-faktor yang mempengaruhi laju reaksi serta menguji tingkat validitas, aktivitas siswa dan kelayakan dari bahan ajar yang dihasilkan. Jenis penelitian yang digunakan adalah penelitian dan pengembangan yaitu penelitian yang digunakan untuk menghasilkan suatu produk tertentu dan menguji keefektifan produk tersebut. Model pengembangan yang digunakan dalam penelitian ini yaitu ADDIE (analyze, design, development, implentation, evaluation). Teknik pengumpulan data diperoleh dari angket validasi bahan ajar, angket observasi dan angket uji kelayakan. Persentase kelayakan bahan ajar yang diperoleh dari angket validasi sebesar 76,66% (layak). Aktivitas siswa saat uji coba penerapan bahan ajar yaitu 88,75% (sangat baik). Persentase rata-rata yang diperoleh dari angket respon siswa adalah sebesar 86,15% dengan kriteria sangat layak. Angket respon guru kimia kelas XI IPA terhadap bahan ajar yaitu 94,67% (sangat layak). Hal ini dapat disimpulkan bahwa bahan ajar handout berbasis kontekstual pada materi faktor-faktor yang mempengaruhi laju reaksi yang dikembangkan bersifat berdaya guna efektif di sekolah uji coba. Kata Kunci: handout, kontekstual, laju raksi ]]>
<![CDATA[THE DEVELOPMENT OF STUDENTS WORKSHEET BASED ON MULTIPLE INTELLIGENCES FOR THE SOURCE OF MATERIALS FOR COLLOID ]]>
<![CDATA[Syafra, Sitti Nur]]>;
<![CDATA[Haji, Abdul Gani]]>;
<![CDATA[Adlim, Adlim]]>;
<![CDATA[Amsal, Azhar]]>
<![CDATA[ Unnes Science Education Journal Vol 7 No 3 (2018): December 2018 ]]>
Publisher : <![CDATA[Department of Integrated Science, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang in Collaboration with Perkumpulan Pendidikan IPA Indonesia ]]>
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DOI: 10.15294/usej.v7i3.13874
<![CDATA[This research was aimed to generate student worksheet based on multiple intelligences (MI) for the sub-chapter of colloid for 11th-grade students. This research used R & D model referred to Borg & Gall. This research follow ten stages of analysis, namely (1) checking of needs; (2) planning; (3) initial development of worksheet's draft; (4) preliminary field testing; (5) main product revision; (6) main field testing; (7) operational product revision; (8) operational field testing; (9) final product revision; (10) implementation and dissemination. The feasibility of student worksheet was reviewed from 5 aspects, content conformity, MI components, linguistic, physical appearance and student worksheet equipment. The average score of quality assessment result by expert validator on product quality was 3.43, with very good category. The percentage of high school chemistry teachers' response in the preliminary field testing, main field testing and operational field testing were 78.89; 83.06 and 86.85 respectively. The student of Inshafuddin High School Banda Aceh responded positively to the student worksheet based on multiple intelligences of the colloid topic with the percentage 88.33. Developed student worksheet based on MI for colloid topics was feasibly applied for learning.]]>
<![CDATA[THE DEVELOPMENT OF STUDENTS WORKSHEET BASED ON MULTIPLE INTELLIGENCES FOR THE SOURCE OF MATERIALS FOR COLLOID ]]>
<![CDATA[Syafra, Sitti Nur]]>;
<![CDATA[Haji, Abdul Gani]]>;
<![CDATA[Adlim, Adlim]]>;
<![CDATA[Amsal, Azhar]]>
<![CDATA[ Unnes Science Education Journal Vol 7 No 3 (2018): December 2018 ]]>
Publisher : <![CDATA[Department of Integrated Science, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang in Collaboration with Perkumpulan Pendidikan IPA Indonesia ]]>
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DOI: 10.15294/usej.v7i3.13874
<![CDATA[This research was aimed to generate student worksheet based on multiple intelligences (MI) for the sub-chapter of colloid for 11th-grade students. This research used R & D model referred to Borg & Gall. This research follow ten stages of analysis, namely (1) checking of needs; (2) planning; (3) initial development of worksheet's draft; (4) preliminary field testing; (5) main product revision; (6) main field testing; (7) operational product revision; (8) operational field testing; (9) final product revision; (10) implementation and dissemination. The feasibility of student worksheet was reviewed from 5 aspects, content conformity, MI components, linguistic, physical appearance and student worksheet equipment. The average score of quality assessment result by expert validator on product quality was 3.43, with very good category. The percentage of high school chemistry teachers' response in the preliminary field testing, main field testing and operational field testing were 78.89; 83.06 and 86.85 respectively. The student of Inshafuddin High School Banda Aceh responded positively to the student worksheet based on multiple intelligences of the colloid topic with the percentage 88.33. Developed student worksheet based on MI for colloid topics was feasibly applied for learning.]]>
<![CDATA[Adjustment of In-Depth Interview and Focus Group Discussion Guidelines for Disaster Victims Evacuation Model Development with Corona Virus Disease 2019 Pandemic ]]>
<![CDATA[Muhammad, Muhammad]]>;
<![CDATA[Kamil, Hajjul]]>;
<![CDATA[Adlim, Adlim]]>;
<![CDATA[Irwandi, Irwandi]]>
<![CDATA[ International Conference on Multidisciplinary Research Vol 4, No 1 (2021): ICMR ]]>
Publisher : <![CDATA[Universitas Serambi Mekkah ]]>
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DOI: 10.32672/pic-mr.v4i1.3769
<![CDATA[In developing the disaster victim evacuation (DVE) model, we started with exploratory study is needed to identify the related variables. The exploratory studies are in the form of qualitative and quantitative research. In this qualitative study conducted agent-based in the nursing perspective. To conduct this research, guidelines are needed that are in accordance with the actual situation, such as the global COVID-19 pandemic. Although many articles have been published regarding in-depth interview (II) and Focus Group Discussion (FGD) guidelines, all of them have to be readjusted according to the situation. This adjustment is important to do minimize problems that arise in the data collection process, such as the emergence of new clusters during pandemic of the Covid 19. This study aims to provide a detailed standard in the implementation of the data collection process using the II & FGD method for the DVE Model development and in accordance with pandemic conditions.This literature review study begins with article search and identification of scientific articles. Before the scientific articles are synthesized, a variable identification process is carried out through 2 stages, namely identification to sort articles according to variables and article selection for research main reference needs and references for discussion.. The results of this study are in the form of qualitative research guidelines presented in the form of standard data collection methods using II & FGD. In this article, we recommend aligning the II & FGD guidelines with the development of information technology in exploring Agent-based information. Keywords: In-depth Interview, FGD, disaster & Model]]>
<![CDATA[Implementasi Model Pembelajaran Berbasis Masalah pada Materi Titrasi Asam Basa untuk Meningkatkan Keterampilan Generik Sains Mahasiswa Program Studi Pendidikan Kimia ]]>
<![CDATA[Hayatuz Zakiyah]]>;
<![CDATA[Adlim Adlim]]>;
<![CDATA[Abdul Halim]]>
<![CDATA[ Lantanida Journal Vol 2, No 1 (2014) ]]>
Publisher : <![CDATA[UIN AR-RANIRY ]]>
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DOI: 10.22373/lj.v2i1.668
<![CDATA[This study was a pre-experimental study through one group pretest-posttest design. The objective of the study was to see whether there was an increase in generic science skills of students with problem-based learning model in the group activities. The subjects were the chemistry students of 2nd semester in Teacher Training and Education Faculty of Unsyiah. The data collection was conducted by using the instruments such as group activity and multiple choice of generic science skill. The data of group activities was processed from the observation scores while the pretest and posttest were processed by using the average of N-Gain. Based on the data analysis, there were significant differences in the pretest and posttest results KGS after the application of PBL teaching model. Referring to the N-Gain, an increase of KGS occured in all indicators. The highest increase was found in indirect observation while the lowest in logic inference. In indirect observation and cause-effect law, the consistent logic framework gained an increase in the medium category.]]>
<![CDATA[PENERAPAN PRESENTASI MEDIA PREZI PADA MATERI SISTEM SARAF MANUSIA TERHADAP KETERAMPILAN BERFIKIR KRITIS SISWA KELAS XI SMA NEGERI 2 BUKIT ]]>
<![CDATA[Aotar Aotar]]>;
<![CDATA[Adlim Adlim]]>;
<![CDATA[Safrida Safrida]]>
<![CDATA[ Jurnal Edubio Tropika Vol 3, No 2 (2015): Jurnal EduBio Tropika ]]>
Publisher : <![CDATA[Jurnal Edubio Tropika ]]>
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<![CDATA[Tujuan penelitian ini adalah untuk mengetahui peningkatan hasil belajar keterampilan berfikir kritis siswa setelah penerapan media prezi pada proses pembelajaran materi sistem saraf manusia. Penelitian inimenggunakan metode eksperimen dengan desain penelitian Pretest-Posttest dan control grup design. Penelitian ini dilaksanakan adalah pada 2 kelas yaitu kelas XI-IPA1 dengan jumlah 24 orang sebagai kelas eksperimen dan kelas XI-IPA2 dengan jumlah siswa 24 orang sebagai kelas kontrol. Sebelum dilaksanakan proses pembelajaran dilakukan pretest baik kelas kontrol maupun kelas eksperimen. Pada proses belajar mengajar (treatment) media presentasi prezi hanya pada kelas eksperimen, pembelajaran dilakukan masing-masing sebanyak tiga kali pertemuan kemudian diberikan postes. Data peningkatan hasil belajar berupa gain ternormalisasi (N-Gain). Perbedaan rata-rata N-Gain kelas eksperimen dan kelas control dianalisis dengan Independent sample t-test. Hasil penelitian menunjukkan bahwa terdapat perbedaan yang signifikan pada keterampilan berpikir kritis siswa setelah penerapan media prezipada proses pembelajaran materi sistem saraf manusia. Dapat disimpulkan bahwa pemanfaatan media prezi pada materi sistem saraf manusia dapat meningkatkan keterampilan berfikir kritis siswa.]]>
<![CDATA[PEMANFAATAN RESIN KITOSAN-AMIN UNTUK RECOVERY EMAS DARI LIMBAH PENGOLAHAN EMAS ]]>
<![CDATA[M. Nasir]]>;
<![CDATA[Adlim Adlim]]>;
<![CDATA[Ibnu Khaldun]]>;
<![CDATA[M. Ali Zulfikar]]>
<![CDATA[ Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 4, No 2 (2012): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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<![CDATA[Chitosan as a material of biological origin has recently been used for recovery of metal ions. This research aims to synthesize kitosan resin resulted by the reaction of kitosan with etilendamin. In the present work chitosan was cross-linked with glutardialdehyde and subsequently treated with epichlorohydrine and ethylene diamine. The resins CR-amine was found to contain 22.7% water content, and were insoluble in organic solvents as well as in mineral and organic acids. The concentration values of the active sites on the resins are reported. The higher concentration of active sites of CR-amine 6.01 mmol/g indicates that the “en” moieties are covalently bonded to the cross-linked resin. Several chemical modification methods were tried in increasing the uptake capacity of cross-linked chitosan bead. Among them, aminated chitosan beads formed through the chemical reaction using ethylenediamine showed the highest uptake capacity for gold ions. Uptake capacity of aminated chitosan beads was increased to about 0.8 mmol Au3+ g-1 dry mass compared to that before modification. The increase of amine groups was confirmed by IR spectrum and measurement of amine concentration and surface condition on aminated chitosan bead was also confirmed by SEM.]]>
<![CDATA[Enhancing the Solubility of Indrapuri Clay (Local “Kieserite”Fertilizer) ]]>
<![CDATA[M. Adlim]]>;
<![CDATA[Zarlaida Fitri]]>;
<![CDATA[. Sulastri]]>;
<![CDATA[Ratu Fazlia Inda Rahmayani]]>;
<![CDATA[Yuliza Laini]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 2 (2012): Engineering ]]>
Publisher : <![CDATA[Syiah Kuala University ]]>
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<![CDATA[Study on enhancing the solubility of clay containing magnesium of localproduction (Indrapuri) has been conducted. The clay is commercially available and named as “kieserite” produced by local companies. The sample was taken randomly from fertilizer shops and analysed with AAS and XRF methods. XRF data of local kieserite showed the dominated chemical content; MgO(33.19%); SiO2(33.11%); CaO(1.90%);Al2O3 (5.77%) and Fe2O3(6.32%). The MgO content is higher than that of magnesium sulphate monohydrate (CAS No.: 14168-73-1) which is only 28%. The concentration of soluble magnesium ions of local kieserite naturally soluble was 0.0186% which is very low compared with the soluble magnesium of magnesium sulphate monohydrate (CAS No.:14168-73-1) which is 25%. The Enhancing the magnesium solubility was done by soaking the local kieseriteinto 0.1-0.5M HNO3 before neutralized with NH4OH or mixing the local kieserite with in alluvial, entisol, red-yellow-podsolik (RYP) soils with and without addition of 0.1-0.5M of (NH4)2SO4. The amount of dissolved magnesium of kieserite was found morein entisol soil than the other type of soils. The concentration increased up between 0.59-1.00% along with the incrementof (NH4)2SO4 concentration (0.1-0.5 M). Both in entisol soil and in 0.1 M of (NH4)2SO4, the dissolved magnesium ion increased up to 0.825% but decreased at higher concentration of (NH4)2SO4]]>
<![CDATA[Preparations of chemical sensors for simple formalin detection in contaminated food (A model for final project works for pre-service teachers in chemistry subject) ]]>
<![CDATA[M. Adlim]]>;
<![CDATA[. Hasan]]>;
<![CDATA[Zarlaida Fitri]]>;
<![CDATA[Yulida Amri]]>;
<![CDATA[Martina Sari]]>;
<![CDATA[Saiful Mahya]]>
<![CDATA[ Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 2 (2011): Engineering ]]>
Publisher : <![CDATA[Syiah Kuala University ]]>
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<![CDATA[Teaching chemistry must include some learning skills in scientific works. The students must have experience conducting small research in chemistry to train them the scientific methods. Some chemistry projects have been carried out by the students of teaching training college (FKIP) as called pre-service teachers in chemistry subject. The students were given research problem that is how to formulate a simple sensor for detection of formalin in contaminated food. The students were asked to review literature on the composition and analysis technique of formalin. The students wrote the research proposal and presented their proposal in front of four reviewers before they start conducting research. The project of formalin sensor preparation was started with studies of the active reagent composition in liquids phase, immobilizing the active reagent in soft media, and following with studies of the sensor sensitivity toward formalin contamination in food. The Schiff Fuchsine (SF) and NASH methods for aldehyde determination were chosen as the basic theory for formalin determination. Schiff Fuchsine (SF) in diluted sulfuric acid solution was kept overnight before use. The media for holding of the reagent was cotton coated with chitosan, then it was pasted in tacon foil, this sensor was called forpastrip (student project-1). It could detect formalin as low as 2% (v/v) of formalin or equivalent with 0,8% of formaldehyde in contaminated food and the expired date was 10 weeks. The forpastrips was tested on food and the chemical interference was also studied (student project-2). Another project was also carried by replacing the cotton with synthetic felt and this formula was recorded as student project-3. The SF reagent immobilized in synthetic felt coated by chitosan was inserted into narrow-plastic straws. The sensitivity of this sensor increased and the detection limit as low as 0.25% (v/v) of formalin in contaminated food and the expired date was more than 12 weeks. The forth project was replacing SF with NASH reagent immobilized in cotton coated by chitosan and inserted in narrow-plastic straws. The detection limit was 0.015% (v/v) of formalin in contaminated food. All Sensors were still effective to detect formalin in sample although the sample contained of sugar, salt, fat and protein as the impurity. The research findings were written by students in their final report (script, like a thesis) after approved by the two supervisors. They students then presented their research in comprehensive exam in front of reviewers before they were graduated. Having interviews with students, they claimed that they have experience in conducting research, have followed all scientific methods. They said the research theme is very interesting, simple, contextual and it might be applied in high schoo]]>
