ANALISIS SECARA BIOKIMIA METHANYL YELLOW PADA TAHU YANG BEREDAR DI PASAR TRADISIONAL KODYA BANDUNG

Tahu merupakan pangan yang popular di masyarakat Indonesia. Kepopuleran tahu tidak hanya terbatas karena rasanya enak, tetapi juga mudah untuk membuatnya dan dapat diolah menjadi berbagai bentuk masakan serta harganya murah. Tahu juga mengandung zat gizi yang penting, seperti lemak, vitamin, dan mineral dalam jumlah yang cukup tinggi. Akan tetapi, masih segar dalam ingatan kita peristiwa penyalahgunaan boraks dan formalin sebagai bahan pengawet makanan. Selain itu, bahan pewarna tekstil dan kulit dipakai untuk mewarnai bahan pangan. Akibatnya banyak masyarakat menjadi ragu-ragu menyantap makanan basah seperti, mie, tahu, ayam, ikan, bakso dan jenis makanan dalam kemasan lainnya. Maka pada kesempatan ini penulis ingin mengetahui dan membahas “Analisis Secara Biokimia Methanyl Yellow Pada Tahu Yang Beredar Di Pasar Tradisional Kodya Bandung”. Tujuan dari penelitian ini, yaitu untuk mendapatkan informasi apakah tahu yang diperjualbelikan di pasar Tradisional Kodya Bandung mengandung Methanyl Yellow sebagai bahan pewarna. Penelitian ini bersifat penelitian deskriptif. Populasi yang digunakan dalam penelitian ini adalah tahu kuning yang di peroleh dari lima wilayah yang ada di Bandung (Barat, Timur, Selatan, Utara dan Tengah) . Penelitian mengenai uji kandungan zat pewarna Methanyl Yellow pada tahu dengan menggunakan metode Spot Test, yaitu tahu dititrasi dengan empat macam larutan yang berbeda, diantaranya HCL pekat, H2SO4 pekat, NaOH 10%, dan NH4OH 10%. Hasil penelitian tahu yang telah dititrasi dapat diketahui bahwa seluruh tahu sebanyak 30 sampel yang diambil dari lima wilayah tidak terdapat Methanyl Yellow. Berdasarkan hasil pemeriksaan diperoleh hasil perhitungan persentase dari pewarna Methanyl Yellow ternyata 100% dari tiga puluh sampel tahu negatif mengandung Methanyl Yellow. Maka disarankan agar perlu dilakukan penelitian lebih lanjut mengenai zat pewarna sintetis lainnya, mengenai bahan tambahan pangan yang lainnya

PEMBELAJARAN STEM (SCIENCE TECHNOLOGY ENGINEERING AND MATHEMATICS) DALAM MENINGKATKAN KREATIVITAS CALON GURU PENDIDIKAN MATEMATIKA DI ERA 4.0

Pendidikan 4.0 merupakan pendidikan yang bercirikan pemanfaatan teknologi digital dalam proses pembelajaran atau dikenal dengan sistem siber (cyber system). Tujuan penelitian ini yaitu 1) menganalisis pembelajaran STEM (science, technology, engineering and mathematics) dalam meningkatkan kemampuan keterampilan kreatif mahasiswa pendidikan matematika, 2) mengetahui seberapa besar pembelajaran STEM (science, technology, engineering and mathematics) mampu meningkatkan kemampuan keterampilan kreatif mahasiswa pendidikan matematika. Penelitian ini didesain sebagai penelitian pra eksperimen. Desain penelitian one case study. Kelompoknya satu dalam arti, subjek yang mengambil atau mengontrak 1 mata Kuliah. Dalam hal ini subjeknya berasal dari Prodi Pendidikan Matematika yang mengontrak Mata Kuliah Aljabar Matriks. Kelas A terdiri dari 35 orang dan Kelas B terdiri dari 26 orang. Kaitannya dengan teknologi dalam pembelajaran STEM, pembelajaran dilakukan dengan menggunakan ICT yaitu program maple. Analisis data yang digunakan adalah analisis data pretest, postest, dan N-Gain. Masing-masing di analisis statistika deskriptinya, kemudian di analisis statistika inferensialnya untuk melihat signifikansi kategori peningkatan masing-masing kelas. Pembelajaran STEM secara deskriptif mampu peningkatan kemampuan kreatif dengan kategori sedang di Kelas A dan kategori tinggi di Kelas B, meskipun tidak meningkat secara signifikan. Tidak terdapat perbedaan peningkatan yang signifikan kemampuan kreatif antara kelas A dan B, karena mempunyai nilai rata-rata peningkatan yang hampir sama

RELATED KNOWLEDGE OF DIARRHEA IN INFANTS WITH ASI EXCLUSIVE BREASTFEEDING BEHAVIOR IN WEST JAVA

This study was conducted based on the data given is the province of West Java provincial government with the highest number of infant deaths in Indonesia since 2006. Although statistically Infant Mortality Rate ( IMR ) in West Java is still smaller when compared to some other provinces but when seen from the number of population, especially the number of babies born each year, the number of infant deaths in West Java categorized as high even in Indonesia is the highest average average of 800 deaths annually. The purpose of this study wanted to test the potential of breast milk in inhibiting the growth of bacteria that cause diarrhea in infants in a laboratory scale . In the future, the results of this study as a reference for the formulation of policy making use of exclusive breastfeeding for nursing mothers in order to make the formulation of policy to reduce the infant mortality rate in West Java Province. The method is used in addition to in vitro laboratorium on plate using the Kirby - Bauer disc or methods also use a survey method to a location by using a questionnaire instrument / questionnaire. Population taken as many as six ( 6 ) districts that include high infant mortality rate is the district of Bogor, Sukabumi district, Cianjur district, Karawang regency, district and county majalengka West Bandung. Samples were taken every kabipaten many as 15-20 people so that the number of respondents by about 100 people. The data were processed using correlation analysis between knowledge, attitude, cleanliness, and diarrheal diseases the number of infant deaths. The results turned out to be no significant relationship between knowledge, attitude, cleanliness, and diarrheal diseases the number of infant deaths is equal 25,26%. That is received and rejected, ha ho there was no relationship between knowledge of diarrhea with the granting exclusive breast-fed t count ( = 1,30 smaller than t table = 2,36 )

Efektivitas Pemanfaatan Aplikasi 3D (Vet & Skeleton Anatomy) Sistem Rangka Berbasis Android Untuk Meningkatkan Hasil Belajar Mahasiswa

Penelitian ini bertujuan untuk mengetahui efektifitas penggunaan aplikasi 3D (vet & skeleton anatomy) sistem rangka berbasis android untuk meningkatkan hasil belajar mahasiswa calon guru Biologi. Metode penelitian yang digunakan yaitu pre-experimental dengan the one group pretest-posttest design. Subjek penelitian ini yaitu 23 mahasiswa semester II disalah satu universitas swasta di Bandung yang diberikan pretest kemudian setelah diberikan perlakukan dilakukan posttest. Berdasarkan hasil analisis data diperoleh skor pretest sebesar 54.174 dan skor posttest sebesar 94.783 yang menunjukkan bahwa terjadi peningkatan hasil belajar mahasiswa pada materi sistem rangka. Selain itu juga diperoleh skor N-gain sebesar 0.849 yang menunjukkan bahwa peningkatan yang terjadi termasuk pada kategori tinggi. Pemanfaatan teknologi dalam pembelajaran yang semakin berkembang dapat memberikan pengaruh yang signifikan terhadap potensi dan hasil belajar mahasiswa karena dapat memberikan kemudahan bagi pengguna baik individu maupun kelompok dalam mengakses materi yang diberikan diberikan tanpa dibatasi ruang dan waktu

Efektivitas Pemanfaatan Aplikasi 3D (Vet & Skeleton Anatomy) Sistem Rangka Berbasis Android Untuk Meningkatkan Hasil Belajar Mahasiswa

Penelitian ini bertujuan untuk mengetahui efektifitas penggunaan aplikasi 3D (vet & skeleton anatomy) sistem rangka berbasis android untuk meningkatkan hasil belajar mahasiswa calon guru Biologi. Metode penelitian yang digunakan yaitu pre-experimental dengan the one group pretest-posttest design. Subjek penelitian ini yaitu 23 mahasiswa semester II disalah satu universitas swasta di Bandung yang diberikan pretest kemudian setelah diberikan perlakukan dilakukan posttest. Berdasarkan hasil analisis data diperoleh skor pretest sebesar 54.174 dan skor posttest sebesar 94.783 yang menunjukkan bahwa terjadi peningkatan hasil belajar mahasiswa pada materi sistem rangka. Selain itu juga diperoleh skor N-gain sebesar 0.849 yang menunjukkan bahwa peningkatan yang terjadi termasuk pada kategori tinggi. Pemanfaatan teknologi dalam pembelajaran yang semakin berkembang dapat memberikan pengaruh yang signifikan terhadap potensi dan hasil belajar mahasiswa karena dapat memberikan kemudahan bagi pengguna baik individu maupun kelompok dalam mengakses materi yang diberikan diberikan tanpa dibatasi ruang dan waktu

Potensi Ekstrak Lengkuas (Alpinia Purpurata K. Schum) Sebagai Fungisida Terhadap Jamur Alternaria Sp. Pada Tanaman Jeruk

Alternaria sp. is one the causess of diseases that attack citrus crops. Pest and diseases control efforts by farmers more often use pesticide synthesis. This study aims to determine the inhibition of mushroom growth and other benefits of galangal extract as a natural fungicide and determine the optimum concentration of galangan extract inhibiting the growth mushroom of Alternaria sp.. The method used was experimental, testing conducted by growing mycelium mushroom Alternaria sp. on a PDA that has been mixed with extract of galangal in according to the respective concentrations and analyze growth response by measuring the diameter. The best results indicated by the treatments 60% that control the growth of mushrooms with deaths amounted to 79%. This shown that galangal extract is able to control the growth of Alternaria sp. at concentrations 60% compared to a concentration of 20%, 30%, 40% and 50% because the active compounds at concentrations that are 60% higher, so galangal extract diffuse into the cell the growing of mushrooms and may cause disruption the growth mushrooms Alternaria sp.. The higher concentration of extract given, the ability to controlling the growth mushroom of Alternaria sp. the better. The utilization of galangal material is done as an alternative fungicide in the control of plant diseases that are eco friendly

DETERMINATION OF DEOXYGENATION RATE OF URBAN RIVER USING MODIFICATION METHODS FOR CITEPUS RIVER WATER, BANDUNG, INDONESIA

River water quality modeling needs appropriate and suitable coefficients especially in application for specific river like urban river. Aim: This study aims to determine the value of the coefficient with a short term duration and a variable test time span.  Several ways and methods of determining the rate of deoxygenation are developed according to the characteristics of the river and the environment. Modification method was applied in this research in which the test time span was unequal. The river chosen in this study is the Citepus River, Bandung, Indonesia representing an urban river in a tropical country. Methodology and Results: Sampling was carried out in the dry season. The laboratory analysis method used in determining the rate of deoxygenation uses the Slope Method of data from the short term incubation, which is ten days. The results showed that the Thomas Slope method's deoxygenation rate (K1) was 0.095 per day in the upstream segment, 0.917 per day in the middle segment, and 0.180 per day in the downstream segment. While the Ultimate BOD (La) value is 46.95 mg/l in the upstream segment, 38.70 mg/l in the middle segment, and 37.60 mg/l in the downstream segment. Conclusion, significance, and impact of study: The results of this study show that the value of the deoxygenation rate is similar to the theoretical surface water conditions. However, in the upstream segment, there is still a low deoxygenation rate value due to non-optimal activity of microorganisms. This findings will be very useful both in water quality modeling and river management

THE IMPLEMENTATION OF STUDENT WORKSHEET MODEL IN ASSESSING TEACHER QUALITY BASED ON CURRICULUM 2013

The research is a part of a three-year research; it was the implementation stage of the complete research. It employed Educational Research and Development (R&D) design, which was modified in several features. The main objective of the research was to produce a comprehensive student worksheet which focuses on scientific project referring to the implementation of Curriculum 2013. The instruments used in the research were cognitive skill test, scientific attitude scale, observation sheet and interview. The implementation stage of the research utilized inquiry-based worksheet that was integrated with Animal Physiology subject, problem-based-learning (PBL) worksheet which was associated with Animal Ecology course, and project-based learning (PjBL) worksheet which was merged with Biotechnology subject. The research involved 60 students of Biology Education Department of Unpas from academic year 2013-2014. 30 of them were the control group and the rests were experimental group. The research shows that there is a difference in terms of students’ cognitive skill of the two groups. The cognitive skill of students in control group has an average of 2,47 (fair) and that of the experimental group is 3,56 (very good). The analysis on scientific attitude scale also shows a difference in terms of students’ affective skill: the control group’s average on this aspect is 2,70 and experiment group’s is 3,56 (very good). Assessment on students’ psycho-motor skill also presents similar trend as the control group’s average is 2,67 (good) and that of experiment group is 3,83 (very good). The averages differences of the observed skills are supported by the data from statistical average comparison test–with the level of significance of α = 0,05–which shows that the differences are significant. From the statistical data, it can be concluded that the model of learning which employs LKS is potential to provide students real experiences of scientific processes in the future, namely observation process that is problem-solving oriented. The ability to do the process in various projects can improve students thinking, which later leads to better attitudes

Portraying Teachers’ Academic Writing Ability as the First Step to Sustainable Teachers’ Professionalism Development

This study is the first stage of a longitudinal study on teacher professional development, particularly in writing scientific papers. From the researchers’ experience as trainers in teacher development program, it was found that most teachers found it difficult to write scientific writings. Hence, this study was attempted to investigate series of observations was done to analyze teachers’ difficulties in making academic writing, with questionnaires as the data collection instrument. Conducted in 2014, 44 respondents–7 male and 37 female teachers from Bandung and Cimahi–were given questionnaires and 42 respondents submitted the questionnaires back. From the questionnaires it was found that teachers’ knowledge in writing academic writing was 20.7%, teachers’ attitude towards academic writing was 15.5%, teachers’ motivation in making academic writing was 15.5%, teachers’ motivation in joining academic writing training was 56%, and teachers’ skill in writing academic paper was 7.8%. From the data, the researchers tried to collect further data on teachers’ relatively low knowledge, attitude and skills in academic writings in order to make training model to improve those aspects. The data served as the basis for conducting further research employing research and development (R & D) methods on making a teacher training model focusing in academic writing for teachers in Bandung and Cimahi that have already been in colom for six years as an attempt to sustainably develop teachers’ professional competence

KEMAMPUAN KOLABORASI SISWA MELALUI MODEL PROJECT BASED LEARNING MENGGUNAKAN ZOOM PADA MATERI EKOSISTEM

Students' collaboration capability is ability in cooperate to solve problem that doing by more than two person at once. Students' collaboration capability is one of the skills that must be possessed by students in learning on society era. Objective research is to see an improvement collaboration through model 'project based learning' using zoom in ecosystem theory.The method used in this research is an experiment with a pre-experimental design in the form of a One-shot Case Study. The population in this study were students of class X IPA  in one of the senior high school in Bandung district, who were purposively sampled. The instrument used to measure students collaboration capability in the form of non-test consisting of an initial observation sheet and a final observation sheet. Data analysis was carried out through descriptive statistics and inferential statistics. The results of the study show that before being given learning through a project based learning model using zoom (Pra-PjBL) average students score is 2.4 (level 1), while the average score after learning (Post-PjBL) is 3.3 (level 3), (average increase is 0.9). The T test results obtained sig (2-tailed) which is equal to 0.00 < 0.05, so that the hypothesis h0 is rejected while ha is accepted. Thus, it can be concluded that there is an improving student collaboration ability through project based learning model using zoom on ecosystem materials.Kata Kunci : Ekosistem, Kolaborasi, Project based learning, Zoo