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Pembuatan Film Selulosa dari Nata de Pina Iskandar, Iskandar; Zaki, Muhammad; Mulyati, Sri; Fathanah, Umi; Sari, Indah; Juchairawati, Juchairawati
Jurnal Rekayasa Kimia & Lingkungan Vol 7, No 3 (2010): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Preparation of cellulose film from nata de pina, a product of pinapple fermentation, using acetobacter xylinum was done at room temperature for 15 days. The aim of the research is to investigate the effect of sugar concentration and pH on film quality. The fermentation run at sugar concentration of 0, 5, 7.5, 10 and 12.5% and at pH of 3, 5 and 7. Results show that the best nata de pina was obtained at sugar concentration of 10% and pH 5. At these conditions, maximum nata precipitates rendemen was 26,80%, with a moisture content of 80,55%, and the thickness of 3,30 cm. The product nata then can be used to produce cellulose film. The characteristic of the produced film were 8,20 Kgf/mm2 and 11,71% for maximum tensile strength and elongation, respectively.Keywords: acetobacter xylinum, film, nata de pina, selulosa
Penguasaan mahasiswa prodi pendidikan matematika FKIP Unsam terhadap materi integral Zaki, Muhammad; Rahayu, Riska
Math Didactic: Jurnal Pendidikan Matematika Vol 3 No 2 (2017)
Publisher : STKIP PGRI Banjarmasin

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penelitian ini bertujuan untuk mengungkapkan sejauh mana penguasaan mahasiswa Prodi Pendidikan Matematika FKIP UNSAM terhadap materi Integral dengan cara memberikan seperangkat tes yang berisi sejumlah soal tertulis. Kemudian juga untuk menentukan alternatif pembelajaran agar mahasiswa Prodi Pendidikan Matematika angkatan berikutnya mampu menguasai dan tidak mengulangi kesalahan yang sama. Penelitian ini berbentuk deskriptif dengan pendekatan kuantitatif. Penelitian  ini dilakukan  di  Prodi  Pendidikan  Matematika FKIP Universitas Samudra untuk satu unit kelas Mahasiswa Prodi Pendidikan Matematika semester genap Tahun Ajaran 2016/2017 yang berjumlah 25 orang. Secara umum penguasaan mahasiswa Prodi Pendidikan Matematika FKIP UNSAM terhadap soal teknik pengintegralan masih rendah. Persentase skor rata-rata terhadap skor maksimal ideal yang dapat dicapai oleh mahasiswa masing dibawah 50%, yaitu 53,12 (53,12 %). persentase mahasiswa  didominasi pada klasifikasi kurang menguasai dan tidak menguasai.
PENGARUH KUALITAS PELAYANAN TERHADAP KEPUASAN PELANGGAN PADA PERUSAHAAN DAERAH AIR MINUM (PDAM) TIRTA MON PASE KABUPATEN ACEH UTARA Affandi, Herri; Zaki, Muhammad; Azmeri, Azmeri
Jurnal Teknik Sipil Vol 6, No 3 (2017): Volume 6, Nomor 3, Mei 2017
Publisher : Department of Civil Engineering, Syiah Kuala University

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Abstract: This study aims to analyze service quality factors that most influence on customer satisfaction, analyzing the impact of service quality on customer satisfaction partially and simultaneously, and to analyze the relationship between service quality to customer satisfaction at PDAM Tirta Mon Pase partially. This research was conducted by a questionnaire survey on customers active and non-active from the taps located on the IPA Geudong, WTP Deep Well, WTP Cot Girek, WTP Ocean, WTP Krueng Pase, WTP Glee Trade, WTP Lhoksukon 1, WTP Lhoksukon 2, and WTP Sawang 2. The results showed that service quality factors that most influence on customer satisfaction PDAM Tirta Mon Pase is showing seriousness, with a regression coefficient of 0.154. Factors partially quality of service that has an influence on customer satisfaction PDAM Tirta Mon Pase is a factor trustworthy, responsive factors, and factors indicate the seriousness with tcount > ttable and sig. < 0.05. Service quality factors simultaneously all have an influence on customer satisfaction PDAM Tirta Mon Pase with a value of Fcount > Ftable and sig. < 0.05 is 166.677 > 2.26 and 0.000 < 0.05. The relationship between service quality to customer satisfaction PDAM Tirta Mon Pase for service factors are real, trustworthy factors, and factors may ensure having high relationship partially with Pearson correlation coefficient values between 0.600 to 0.799, while the factor responsive and demonstrates its seriousness factor has very high correlation partially with Pearson correlation coefficient values between 0.800 to 1.000. Abstrak: Penelitian ini bertujuan untuk menganalisis faktor kualitas pelayanan yang paling berpengaruh terhadap kepuasan pelanggan, menganalisis pengaruh kualitas pelayanan terhadap kepuasan pelanggan secara parsial dan secara simultan, serta menganalisis hubungan antara kualitas pelayanan terhadap kepuasan pelanggan pada PDAM Tirta Mon Pase secara parsial. Penelitian ini dilakukan dengan survei kuesioner pada pelanggan aktif dan non aktif dari PDAM yang bertempat pada IPA Geudong, IPA Sumur Dalam, IPA Cot Girek, IPA Samudera, IPA Krueng Pase, IPA Glee Dagang, IPA Lhoksukon 1, IPA Lhoksukon 2, dan IPA Sawang 2. Hasil penelitian menunjukkan bahwa faktor kualitas pelayanan yang paling berpengaruh terhadap kepuasan pelanggan PDAM Tirta Mon Pase adalah menunjukkan kesungguhan, dengan nilai koefisien regresi sebesar 0,154. Faktor-faktor kualitas pelayanan secara parsial yang mempunyai pengaruh terhadap kepuasan pelanggan PDAM Tirta Mon Pase adalah faktor dapat dipercaya, faktor bersikap tanggap, dan faktor menunjukkan kesungguhan dengan nilai thitung > ttabel dan sig. < 0,05. Faktor-faktor kualitas pelayanan secara simultan semuanya mempunyai pengaruh terhadap kepuasan pelanggan PDAM Tirta Mon Pase dengan nilai Fhitung > Ftabel dan sig. < 0,05 yaitu 166,677 > 2,26 dan 0,000 < 0,05. Hubungan antara kualitas pelayanan terhadap kepuasan pelanggan PDAM Tirta Mon Pase untuk faktor pelayanan bersifat nyata, faktor dapat dipercaya, dan faktor dapat menjamin mempunyai hubungan yang tinggi secara parsial dengan nilai koefisien korelasi Pearson antara 0,600-0,799, sementara faktor bersikap tanggap dan faktor menunjukkan kesungguhan mempunyai hubungan yang sangat tinggi secara parsial dengan nilai koefisien korelasi Pearson antara 0,800-1,000.
PENGEMBANGAN PERANGKAT ASESMEN KINERJA DALAM PEMBELAJARAN MATEMATIKA SUB POKOK BAHASAN MELUKIS SEGITIGA PADA SISWA KELAS VII SMP NEGERI 2 SURABAYA Zaki, Muhammad
Jurnal Ilmiah AdMathEdu Vol 2, No 2 (2012): Desember
Publisher : Universitas Ahmad Dahlan

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Paper and pencil test has been said to have failed to provide a robust indication of student’s competence achievement. NCTM for instance maintains that a practical math assessment is needed for such a purpose. To measure students’ performance requires an alternative assessment instrument. An instrument which is not depending on a mere writing test alone (paper and pencil test), as underlined in KTSP. KTSP is a class-based assessment, which also calls for a throughout assessment through which students are asked to demonstrate their learned competence in more ways than one. As an alternative assessment, Performance assessment is too a class based assessment, consisting of two difference parts namely performance and rubric task. The former is referred to those open questions which necessitate students to solve them by showing the process (performance) of how they are done while the latter sets the guideline for grading and scoring student’s performance, based on assessment criteria which has been earlier prepared. Performance assessment is undertaken to particularly review and assess students’ tasks using which teachers could comprehend and collect thorough information regarding students’ knowledge of math, math strategies and communication. This research has been carried out to intentionally measure how math achievement of secondary school students’ has met its learning goal especially in sub-topics of triangle drawing using performance assessment. The data for this research were collected at SMP Negeri 2 Surabaya. This topic was purposely selected and deemed appropriate to comprehend students ability as it requires them to show their best ability to use anchor  and  ruler as well as how they appropriately follow steps in the process. The research question is how software development processes and results of performance assessment in mathematics learning in class VII students of SMP Negeri 2 Surabaya?. Based on the research questions above, then the purpose of this study was to describe the development and yield performance assessment tools in learning mathematics for class VII students of SMP Negeri 2 Surabaya. Subjects tested in this study is that VII H grade students represented by six students and VII B grade students as subjects for the implementation of performance assessment instrument. To answer the research questions above, this study was designed to study the development in accordance with fase model of development on the Plomp. This study used the instrument in the form of task performance, assessment rubrics, guidelines for student interviews and questionnaires. Data collection techniques used in this study is to provide the task performance, questionnaires, and interviews. The research found that the development of assessment performance instrument using  plomp development model on the sub-topic of triangle drawing will require five different phases, namely 1) initial investigation, 2). Planning, construction realization, test, evaluation and revision, and 5) implementation. Using plomp development model, a set of task performance assessment was produced in relation to triangle drawing sub-topic. it was stated that this task performance assessment:  (1) is Valid under in the view of the experts, (2) that the difficulty level of assessment task was low. The same is too found in rubric assessment.(3) that  the students could entirely complete performance tasks: the responses given by students are fully in accordance with what it is asked in performance tasks. (4) the students and the teachers have both agreed that the rubric could be well utilized for assessment purposes  (5) objective, the students relatively score similar result out of two assessment undertaken and therefore it is safe to argue that  rubric was an objective assessment. (6). Performance Assessment is seen as effective in that (a) rubric has indeed improved students performance (b) rubric paves the ways and render positive feed-backs  to effective learning due to : the students ability level  resulting from performance assessment are at Tuntas Category, and students responses to performance assessment were at positive category. (7) Reliable, the students score similar performance assessment results during the second test and as such it is concluded that rubric is has successfully produced a reliable assessment instrument. Key Words:  assesment, performance assessment, performance task, rubric
The Vertical Profile Of Nitrate in Pinang Dalam Oxbow Lake Buluh China Village Siak Hulu Sub District Kampar District Riau Province Zaki, Muhammad; Siagian, Madju; Simarmata, Asmika Harnalin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

This research has been done in Pinang Dalam Oxbow Lake from Maret 2014. Thisresearch aims to understand the vertical profile of nitrate in Pinang Dalam oxbow lake. Theresearch used survey method. Sample were taken in three stations, namely station 1, station 2 andstation 3. Sampling vertical based transparency, at surface, 2,5 secchi disk, and in the bottom.The parameters of water quality measured nitrate, phosphate, temperature, transparancy, depth,pH, free carbon dioxide (CO) and dissolved oxygen (DO). The result shown nitrate range 0,020- 0,337 mg/L, phosphate 0,037 – 0,710 mg/L, temperature 28,3-28,7 oC, transparancy 27,3-28,5cm, depth 145-302 cm, pH 5, free carbon dioxide 5,33 - 9,32 mg/L, and dissolved oxygen 2,40- 6,83 mg/L. The vertical profile of nitrate showed increased with the increment of depth. Theparameters of water quality were observed still support the aquatic organisms.Keywords : nitrate, the vertical profile, Pinang Dalam Oxbow
Uptake of Mercury Ion in a Wetland Plant, Canna Sp. Suhendrayatna, .; Marlina, Henny; Zaki, Muhammad; Elvitriana, .
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering
Publisher : Syiah Kuala University

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Canna Sp. is one of the plants that can live in conditions of wetland cultivated in freshwater courses, which often serve as recipients for domestic and other sorts of wastewater. In the context of its life ability, this study deals to investigate the capacity of Canna Sp. in uptake toxic heavy metal mercury from a wetland system. Canna Sp. was cultivated in a polybag contained wastewater for a couple months to reach acclimatization. The wastewater contained mercury ions in different concentrations of 1.2; 0.96 and 0.36 mg-Hg/L. Each polybags contained five stems of Canna Sp. Control media (contain no mercury in media) were also prepared for these treatments. During 14 days of the experiment, the atmospheric air and water temperature (30+3 oC is optimum) were maintained and every five days, length of stems, concentration of mercury ion in water phase, and its tissue were analyzed. The concentration of mercury in shoots, leaves, and roots were analyzed by Atomic Absorption Spectrophotometer, Shimadzu AA 6300 after destructed using TCLP method. Results showed that Canna Sp. has resistant a survival on water phase containing mercury and it inhibits the growth of Canna Sp. in the log phase. The highest mercury ion uptake by Canna Sp. occurred in the root (1.16 – 1.34 mg-Hg/kg) compared to the leaves (0.05 – 0.33 mg-Hg/kg) and the shoots (0.29-0.69 mg-Hg/kg). These results reached to the conclusion that Canna Sp. has a potential for mercury phytoremediation application in a wetland system.
Preliminary study on the adsorption of lead (II) ions from aqueous solution with breadfruid’s bark (Artocarpus altilis) by un-modified and modified with citric acid Mairiza, Lia; Zaki, Muhammad; Nurhayati, .; Juliyanti, Evi
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 2 (2011): Engineering
Publisher : Syiah Kuala University

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The adsorption of lead(II) ions from aqueous solution with breadfruit’s bark by unmodified and modified with citric acid was investigated. The results by using adsorbent dosage 20 g/L indicated the   adsorption efficiency was up to 99%, and the best result is obtained about 99,963% when adsorbate is  conducted with modified bark for 90 minutes. The adsorption behavior by modified bark followed the Langmuir isotherm model and the Freundlich isotherm model for modified bark. The maximum adsorption capacity of lead(II) ions are 34,98 mg adsorbate/g adsorbent for unmodified bark when contact time is 60             minutes. The influence of contact time showed that adsorption reached the equilibrium rapidly. A batch adsorption model followed the pseudo second order kinetic.
PERLINDUNGAN ANAK DALAM PERSPEKTIF ISLAM Zaki, Muhammad
Asas Vol 6, No 2 (2014): Juli 2014
Publisher : IAIN RADEN INTAN LAMPUNG

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Islam memandang anak sebagai karunia yang mahal harganya yang berstatus suci. Karunia yang mahal ini sebagai amanah yang harus dijaga dan dilindungi oleh orang tua khususnya, karena anak sebagai aset orang tua dan aset bangsa. Islam telah memberikan perhatian yang besar terhadap perlindungan anak-anak. Perlindungan dalam Islam meliputi fisik, psikis, intelektual, moral, ekonomi, dan lainnya. Hal ini dijabarkan dalam bentuk memenuhi semua hak-haknya, menjamin kebutuhan sandang dan pangannya, menjaga nama baik dan martabatnya, menjaga kesehatannya, memilihkan teman bergaul yang baik, menghindarkan dari  kekerasan, dan lain-lain.
METODE PEMAHAMAN DAN PENGAMALAN HADITS JAMAAH TABLIGH Zaki, Muhammad
Ijtimaiyya: Jurnal Pengembangan Masyarakat Islam Vol 8, No 2 (2015): Ijtimaiyya: Jurnal Pengembangan Masyarakat Islam
Publisher : Ijtimaiyya: Jurnal Pengembangan Masyarakat Islam

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There are clear differences in meaning of the Prophetictraditions (hadith) among the Islamic scholars. Accordingto scholars of Hadith (muhaddits), everyting that comesfrom the Prophet, in the form of words, deeds, taqrir,physical and non-physical, since before his apostleshipand after it, is a Hadith or Sunnah, which should befollowed. As for the scholars of fiqh (fuqaha), hadith islimited on words, deeds, and taqrir taht only has a legalimplications. The deeds of the Prophet which isperformed for the basic needs as human beings, thedeeds that was done by accident, physical form, are nothadith. Among Muslims, Tablighi Jamaat is thecommunity that tends to the defination the scholars ofhadith, so they practices and strives for such outwardappearance of the Prophet. Tablighi Jamaat are generallytextual. It can be seen from the practice of the sunnahsthat related to worship, manners or appearance, such ashow to dress, wearing a cap and turban, siwak,lengthening the beard and shaving the mustache, eatingand drinking, and others. For them, the Prophet was sentas an example for humanity, so that everything thatcomes from him should be followed
Studi penentuan lokasi budidaya kerapu menggunakan keramba jaring apung di perairan Timur Simeulue Purnawan, Syahrul; Zaki, Muhammad; Asnawi, T.M.; Setiawan, Ichsan
DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Vol 4, No 1 (2015): APRIL 2015
Publisher : Faculty of Marine and Fisheries, Syiah Kuala University

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Abstract. Groupers are of considerable economic value in southeast Asia.  Cage culture is considered as the proper technology to maximize the sustainable biomass production in a unit area. This research assesses a site selection approach for net-cage grouper mariculture in the eastern coastal area of Simeulue Island, namely Sambai, Kuta Batu and Pulau Bengkalak. Data collection focused on 7 biophysical site capability parameters i.e.: current flow, temperature, water clarity, bottom depth, pH, salinity, dissolved oxygen. Suitability analysis identified all stations was categorized as a very appropriate and appropriate conditions for the fish cage location.Keywords: grouper; mariculture; fish cage; SimeulueAbstrak. Kerapu merupakan komoditas unggulan dan memiliki permintaan pasar yang tinggi di daerah Asia Tenggara. Keramba jaring apung (KJA) dianggap sebagai teknologi yang tepat untuk meningkatkan biomassa budidaya di suatu wilayah. Penelitian ini bertujuan untuk mengkaji kesesuaian lokasi penempatan KJA di wilayah pesisir timur Pulau Simeulue yaitu Sambai, Kuta Batu dan Pulau Bengkalak. Kajian data difokuskan pada tujuh parameter biofisik yaitu arus, suhu, kecerahan, kedalaman perairan, pH, salinitas, dan oksigen terlarut. Analisis kelayakan menunjukkan seluruh stasiun dikategorikan sebagai layak dan sangat layak untuk lokasi budidaya KJA.Kata kunci: Kerapu; marikultur;  KJA; Simeulue