OPTIMALISASI PENGOLAHAN AIR LIMBAH INDUSTRI BATIK MENGGUNAKAN INTEGRASI BIOFILTER DAN CONSTRUCTED WETLANDS SEBAGAI SUMBER DAYA AIR TERBARUKAN

Abstrak Air limbah yang dihasilkan selama proses produksi batik mengandung bahan kimia beracun dan sulit terurai yang dapat menyebabkan meningkatnya BOD, COD, TSS, pH maupun logam berat. Air limbah yang dihasilkan dari batik atau industri tekstil umumnya merupakan senyawa organik yang sulit terurai, yang dapat menyebabkan pencemaran lingkungan, terutama dari lingkungan akuatik. Effluent dari industri batik pada proses boiling tidak memenuhi baku mutu yang telah ditetapkan oleh Permen LH RI No. 5 Tahun 2014. Sistem pengolahan air limbah alami seperti constructed wetlands (CWs) dan biological sand filter menjadi alternatif yang relevan dalam mengolah air limbah karena efisiensinya, biayanya maupun pengoperasiannya. Penelitian ini bertujuan untuk mengolah air limbah industri batik menggunakan integrasi biofilter dan CWs. Penelitian dilakukan dengan membuat skala kecil dari alat integrasi biofilter dan constructed wetlands yang kemudian dilakukan uji coba kinerja alat dengan mengalirkan sampel air limbah industri batik. Hasil penelitian menunjukkan efisiensi penurunan untuk masing-masing parameter COD, TSS, dan minyak & lemak sebesar 72,67-86,67%; 95,85-98,18%; dan 79,47-90,04%. Hasil penelitian menunjukkan bahwa air hasil pengolahan limbah industri batik masih melebihi baku mutu yang telah ditetapkan sehingga air hasil pengolahan tidak diperbolehkan untuk dibuang ke badan air. Air hasil pengolahan juga tidak dapat diperuntukkan oleh masyarakat karena tidak memenuhi kriteria mutu air pada kelas air yang ditetapkan. Penelitian lebih lanjut diperlukan untuk pemanfaatan air hasil pengolahan sebagai air bahan bangunan. Kata Kunci: limbah industri batik, boiling, biofilter, constructed wetlands Abstract Wastewater produced during the batik production process contains toxic and non-biodegradable chemicals resulting in high BOD, COD, TSS, pH and heavy metals. Wastewater generated from batik or textile industries is generally a non-biodegradable organic compound, which can cause environmental pollution, especially of the aquatic environment. Effluent from the batik industry during the boiling process did not meet the standard for discharged effluent in accordance with the Minister of Environment Regulation No.5 of 2014. Natural wastewater treatment systems such as constructed wetlands and biological sand filters are becoming an increasingly relevant alternative for treating wastewater due to its efficiency, low establishment costs and low operation and management requirements. This research aims to treat batik industry wastewater by using biofilter and CWs integration. The research was conducted by making a small scale from the biofilter and constructed wetlands integration, then tested by flowing samples of batik industry wastewater. The results indicated removal efficiency for each parameter of COD, TSS, and fat & oil amounts 72.67-86.67%; 95.85-98.18%; and 79.47-90.04%. The results showed that the treated water from batik industry waste processing still exceeds meet the standard for discharged effluent so that the treated water is not allowed to be discharged into water bodies. The treated water also cannot be used by the community because it does not meet the water quality criteria for the specified water class. Further research is needed for the utilization of treated water as building materials. Keywords: batik industry wastewater, boiling, biofilter, constructed wetland

Effect Combination of HIIT with Recovery Model on VO2max Quality and Monitoring of Heart-Rate Recovery

This study aims to analyze the effect of differences resulting from the combination of HIIT with recovery models in active and passive forms on the quality of VO2max and monitoring of heart-rate recovery. This study was designed using a quasi-experimental design, and 30 participants participated voluntarily in the study which was further divided into three groups: HIIT-PP experiment (n:10; Age: 21.0±0.82; Weight: 67.2±13.6; Height: 1.68±0.07), HIIT-PP experiment (n=10; Age: 21.1±1.20; Weight: 64.9±6.07; Height: 1.68±0.04), and control group (n=10; Age: 21.09±1.29; Weight: 69.3±5.46; Height 1.69±0.05). This research instrument uses Multistage Fitness Test (MFT) and Heart-Rate Monitoring. The procedure for analyzing the statistical research data used the Analysis of Variance (ANOVA) test with a p-value <0.05. The results showed that the parameter differences between the experimental and control groups significantly improved the quality of VO2max and monitoring of heart-rate recovery (HRM, and HRR 2min, 5min, 10min). This study can conclude that using HIIT with recovery models in passive forms for eight weeks resulted in a change in the quality of VO2max and monitoring of heart rate recovery

The use of QR code on educational domain: a research and development on teaching material

The study aims at designing and developing QR code-based teaching materials for the theory and the practice session of the course Table Tennis that might be easily and readily accessed and learned in order to improve the motivation and the basic skills in playing table tennis. Therefore, the nature of the study is research and development. Within the research and development, the researcher has adopted the 4D model proposed by Thiagarajan et al. The stages in the 4D model consist of Define, Design, Develop and Disseminate. In brief, the data that have been gathered within the study are as follows: (1) in the needs analysis, 79.20% of the total students that have been surveyed  state that they agree with the development of QR code-based teaching materials for the course Table Tennis; (2) in the development stage that has gone through the validation test by 3 evaluators, the learning media expert states that the product has been 75.00% valid, the material expert states that the product has been 85.20% ready and the linguistic expert states that the product has been 75.00% valid; and (3) within the experiment test, the validity has been 77.01%. Therefore, it might be concluded that the QR code-based teaching materials are already feasible and ready for implementation.The study aims at designing and developing QR code-based teaching materials for the theory and the practice session of the course Table Tennis that might be easily and readily accessed and learned in order to improve the motivation and the basic skills in playing table tennis. Therefore, the nature of the study is research and development. Within the research and development, the researcher has adopted the 4D model proposed by Thiagarajan et al. The stages in the 4D model consist of Define, Design, Develop and Disseminate. In brief, the data that have been gathered within the study are as follows: (1) in the needs analysis, 79.20% of the total students that have been surveyed  state that they agree with the development of QR code-based teaching materials for the course Table Tennis; (2) in the development stage that has gone through the validation test by 3 evaluators, the learning media expert states that the product has been 75.00% valid, the material expert states that the product has been 85.20% ready and the linguistic expert states that the product has been 75.00% valid; and (3) within the experiment test, the validity has been 77.01%. Therefore, it might be concluded that the QR code-based teaching materials are already feasible and ready for implementation

Pengembangan Model Pembelajaran Melompat Melalui Permainan Lompat Cermin untuk Siswa Sekolah Dasar

Penelitian bertujuan untuk mengembangkan model pembelajaran gerak dasar melompat yang menarik dan variatif yaitu melalui permainan lompat cermin yang sesuai dengan dengan karakteristik gerak dasar melompat yang mengacu pada teknik pelaksanaan dan prinsip-prinsipnya. Berdasarkan data awal yang diperoleh melalui pengamatan menunjukkan bahwa perlu adanya dilakukan penelitian lebih mendalam. Penelitian pengembangan model pembelajaran ini mengikuti langkah-langkah yang digunakan oleh Gall & Borg ll yang dikutip oleh Ramadan yang dimodifikasi oleh peneliti karena pertimbangan waktu dan biaya. Secara ringkas data yang diperoleh dari evaluasi ahli pembelajaran diperoleh hasil 81,25%, dari evaluasi ahli pendidikan jasmani diperoleh hasil 91,67%, evaluasi ahli permainan lompat cermin diperoleh hasil 87,50%. Uji coba kelompok kecil diperoleh data 69,27%, dari uji coba kelompok besar diperoleh data bahwa 82,29% maka dapat disimpulkan bahwa model pembelajaran hasil pengembangan dapat digunakan

PENGEMBANGAN BUKU AJAR ATLETIK BERBASIS PENELITIAN MATAKULIAH ATLETIK

Penelitian ini bertujuan untuk mengembangkan sebuah buku ajar berbasis penelitian untuk mata kuliah teori dan praktek atetik bagi mahasiswa program studi pendidikan jasmani kesehatan dan rekreasi. metode yang digunakan dalam penelitian ini adalah metode penelitian pengembangan (research and development) dari brog dan gall. pengembangan ini menghasilkan suatu produk berupa buku ajar berbasis penelitian pada mata kuliah teori dan praktek atletik. hasil analisi data penelitian  ini berupa, penilaian ahli isi (mata kuliah atletik) dengan hasil persentase yaitu 82,54%, ahli bahasa dengan hasil persentase yaitu 77,50%, hasil validasi ahli media pembelajaran dengan persentase yaitu 80,35%, hasil penilaian uji coba tahap I (kelompok kecil) dengan persentase 77,74%, hasil penilaian uji coba tahap II (kelompok besar) dengan persentase 81,38%, hasil penilaian uji lapangan dengan persentase 90,05% yang berarti buku ajar ini sudah layak digunakan sebagai bahan ajar matakuliah teori dan praktek atletik I bagi mahasiswa IKIP Budi Utomo Malang

Comparison of Risk Organ Distribution with Target Volume Size Variations Using Rapid ARC and IMRT Techniques for Case of Lung Cancer

This study aims to know how big the difference between dose distribution Rapid Arc and IMRT technique and gains on PTV dose 95%. This research is a descriptive qualitative research data obtained from Phantom to take three the size of the volume of the tumor is seen from the organs at risk of Medulla spinalis, heart, healthy and the lung from the results of the data processing and then analyzed the distribution of the received dose organs at risk. Data analysis is done using the Software eclipse. The result show received dose between flashes IMRT technique and Rapid arc technique on the size of the volume of cancer 250 cm3, 500 cm3, 750 cm3 on the part of the heart and the lungs, Rapid arc provides better radiation dose compared with IMRT but only the medulla spinalis get higher doses but still below the maximum dose organ and gains received on PTV dose 95% with the technique of Rapid Arc higher than IMRT technique

Validity and Reliability of Futsal Coach Competency Evaluation Instruments

Background: The study of the futsal coach competency evaluation instrument was done because there was no any existed instrument used to measure the futsal coach competence. Objective: This research aims to determine the validity and reliability of the futsal coach competency evaluation instrument. Method: the validation and reliability instruments were determined using three quantitative methods in the main phases or steps, which are expertly judged (content validation), theory test (logical validation) and data test (construct validation). The research was done by distributing questionnaires via a google form. Result: The instrument validity data is based on the average score of the research subjects assessment. Media experts scored 90.71%, 89.5% and 93.3% in 3 aspects. While material experts scored 87.69%, 85.38%, and 96.15% in 5 aspects. The KMO and MSA factors analysis test covers four competencies results: personality 0.893, social 0.884, intellectual 0.886 coachings 0.782. The instrument is valid based on the value range of 0.517-0.954. The instrument’s reliability, divided into four competencies, is reliable because the Cronbach alpha score is higher than 0.7. Conclusion: The findings of this study brings a new insight that the coach’s competence needs to be measured using appropriate, valid and reliable instruments. The results in this study are a competency evaluation instrument consisted of 4 competencies (personality, social, intellectual and coaching). This research will certainly provide a positive point to evaluate the competencies owned by futsal coaches

PENGARUH LATIHAN LARI 12 MENIT DAN LARI BOLAK BALIK TERHADAP PENINGKATAN DAYA TAHAN VO2 max

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh latihan lari 12 menit dan lari bolak balik terhadap peningkatan daya tahan VO2. Hasil data dari penelitian dianalisis dengan menggunakan teknik analisis varian satu jalur atau one way anova dengan taraf signifikansi 0,05. Dari uji tersebut diperoleh Fhitung sebesar 8,385< 4,41 Ftabel pada hasil pretest dan posttest kelompok X1 dan diperoleh Fhitung sebesar 5,831< 4,41 Ftabel pada hasil pretest dan posttest kelompok X1, kemudian untuk kelompok kontrol diperoleh Fhitung sebesar 0,00039< 4,41 dan untuk selisih kelompok X1 dengan kelompok kontrol diperoleh Fhitung sebesar 112,71 > 4,20 Ftabel dan selisih kelompok X2 dengan kelompok kontrol diperoleh Fhitung sebesar 73,14 > 4,20 Ftabel. Perolehan tersebut merujuk pada hasil penelitian yang diperoleh. Kesimpulan ada pengaruh signifikan antara latihan lari 12 menit dan lari bolak balik dengan latihan konvensional terhadap peningkatan daya tahan pemain

Primary school physical education management: Profiles and predictors in Central Java

Effective management allows teachers to see and handle student learning problems. This study aimed to determine the physical education management of elementary school teachers in Central Java and its predictors. This research is quantitative with data description and correlation. Using purposive sampling, the total number of respondents was 50 physical education teachers at the elementary level in Central Java. The data was processed using descriptive statistics, data normality, and correlation. The subjects studied had a minimum teaching experience of 1 year. Data collection techniques include instruments and observation by physical education teachers. The instruments included planning, implementation, and evaluation of physical education management. The questionnaire uses a scale of 1-4. In terms of age and length of teaching, researchers used correlation analysis. Correlation data were processed using SPSS Version 21. The management of physical education in Central Java is in the "good" category. Physical education management includes planning, implementation, and evaluation. Length of teaching and age are not predictors in physical education management. Most physical education teachers are linear and have at least a bachelor's degree. Further studies are needed involving many teachers and other variables to determine predictors. The results of this study contribute consideration, support, and contribution of ideas to stakeholders to improve the quality of physical education. The role of management is crucial in enhancing teachers’ ability to achieve educational goals in general.     &nbsp