Profil Pencemaran Udara Kawasan Perkotaan Yogyakarta: Studi Kasus di Kawasan Malioboro, Kridosono, dan UGM Yogyakarta

Suparwoko, Suparwoko; Firdaus, Feris

doi:10.20885/logika.vol4.iss2.art6

Cited by 11 publications

(8 citation statements)

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“…Forecasting is predicting something that has not yet happened [4]. Forecasting aims to predict the future value of a time series 𝑥 𝑛+𝑚 , 𝑚 = 1,2, .…”

Section: Forecastingmentioning

confidence: 99%

Forecasting Using Sarima and Bayesian Structural Time Series Method for Range Seasonal Time

RIZAL,

Sri Utami Zuliana

2023

icdsos

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Data containing seasonal patterns, the SARIMA and Bayesian Structural Time Series methods, are time series methods that can be used on this type of data. This research aims to determine the steps of the SARIMA model and Bayesian Structural Time Series, applying the SARIMA model and Structural Bayesians Time Series, get the forecasting results of the SARIMA model and Bayesian Structural Time Series with MAPE measurements. The research method used is a quantitative method applied to data on the number of PT KAI train passengers in the Java region for 2006-2019. The results of this research show that the best model for forecasting the number of PT KAI train passengers in the Java region in 2006-2019 is SARIMA (2,1,0)(0,1,2)[12] with a MAPE value of 4.77% compared to the Bayesian method structural time series [12] namely 5.25%.

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“…Forecasting is predicting something that has not yet happened [4]. Forecasting aims to predict the future value of a time series 𝑥 𝑛+𝑚 , 𝑚 = 1,2, .…”

Section: Forecastingmentioning

confidence: 99%

Forecasting Using Sarima and Bayesian Structural Time Series Method for Range Seasonal Time

RIZAL,

Sri Utami Zuliana

2023

icdsos

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“…Dampak timbal (Pb) yang bisa memicu timbulnya gangguan kesehatan seperti penurunan kecerdasan anak dan kemampuan akademik dan bisa mempengaruhi kualitas bangsa Indonesia di masa depan. Timbal (Pb) telah menyebabkan hipertensi pada 20% orang dewasa dan juga pada 29% anak-anak karena timbal (Pb) terakumulasi dalam darah (Suparwoko & Firdaus, 2007). Timbal adalah racun lingkungan yang persisten, yang secara alami ada di lingkungan; kegiatan antropogenik telah meningkatkan beban lingkungan dan membuat populasi berisiko karena berbagai sumber paparan.…”

Section: Institute For Health Metrics and Evaluation (Ihme) Memperkir...unclassified

Aktivitas Antioksidan Kulit Jeruk Pacitan (Citrus sinensis L.) Terhadap Kadar SGOT dan SGPT Rattus norvegicus Dengan Paparan Logam Berat Timbal (Pb)

Kunsah

Samsudin

2022

J. Pharm. Sci. Clin. Res.

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Timbal merupakan logam yang bersifat toksik apabila terakumulasi di dalam tubuh dalam jumlah tertentu. Timbal masuk ke dalam sirkulasi darah dan beresiko menyebabkan kerusakan hati dimana dapat dilihat dengan pemeriksaan SGOT dan SGPT. Pada kondisi stres oksidatif dapat mengakibatkan terjadinya kerusakan sel hati sehingga tubuh memerlukan antioksidan eksogen, yang bisa didapatkan dari ekstrak kulit jeruk pacitan. Tujuan penelitian adalah untuk mengetahui pengaruh pemberian Ekstrak kulit jeruk pacitan pada kadar SGOT dan SGPT Rattus norvegicus wistar yang diinduksi dengan menggunakan timbal asetat. Metode penelitian ini adalah quasi experimental dengan rancangan post test only control group design. Sampel dibagi menjadi 5 kelompok yaitu Kelompok (G1) Rattus norvegicus diberi ransum pakan standar dan aquadest; (G2) diberikan Pb asetat peroral 30 mg/kgBB/hari, (G3) diberikan Pb asetat peroral 30 mg/kgBB/hari dan ekstrak kulit jeruk pacitan dosis 100 mg/kgBB/hari; (G4) diberikan Pb asetat peroral 30 mg/kgBB/hari dan ekstrak kulit jeruk pacitan dosis 200 mg/kgBB/hari; (G5) diberikan 30 mg/kgBB/hari dan ekstrak kulit jeruk pacitan dosis 300 mg/kgBB/hari. Penelitian telah mendapatkan surat keterangan layak etik No.EA/KEPK-Poltekkes_Sby/V/2022. Hasil penelitian berupa besar prosentase penurunan kadar SGOT dari kelompok G2 dengan kelompok perlakuan G3, G4 dan G5 yaitu 16%, 33%, dan 57%. Sedangkan untuk hasil penurunan kadar SGPT dari kelompok G2 dengan kelompok perlakuan G3, G4 dan G5 yaitu 25%, 34%, 46%. Kesimpulan ekstrak kulit jeruk pacitan memberikan pengaruh yang signifikan terhadap kadar SGOT dan SGPT pada Rattus norvegicus yang diinduksi PbCH3COO dengan nilai signifikasi < 0,005.

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“…Walaupun bukan satu -satunya sumber, baik sumber alamiah (natural) maupun sumber yang berasal dari aktivitas manusia (kegiatan antropogenik), konsentrasi logam timbal Pb di udara, khususnya di perkotaan sebagian besar berasal dari gas buang kendaraan bermotor. (Suparwoko, 2007). Bahan bakar kendaraan bermotor khususnya premium yang banyak digunakan, menggunakan Timbal (Pb) untuk menaikkan bilangan Oktan.…”

Section: Pendahuluanunclassified

Preliminary Measurement of Pb Concentration in the Jawi River Region City of Pontianak

Winardi

2015

JBA

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Pb concentration in the air mostly come from motor vehicle exhaust. There is a correlation between the levels of activity of motor vehicles with Pb concentration in the air. Research which is a combination of field and laboratory research is seeing Pb concentrations in the air at Jalan H. Rais A. Rahman, Sei Jawi Dalam Pontianak which is one of the areas with the densest vehicle activity in Pontianak, in different variations and then compared with the standard quality. This study consists of three variations, namely variations days (Monday till Sunday); variations in time (morning, afternoon, evening); height variation (1 m, 1.5 m, 2 m) were determined on the day and the maximum time to see the horizontal dispersion concentration of Pb in the air. With comparative and tabulation method and sought the maximum Pb concentration in time, the day and altitude. Based on the research results, obtained maximum Pb concentration in the morning and the minimum in the afternoon, except on Friday and Saturday, where the concentration of Pb afternoon more than the concentration in the afternoon. At the time of maximum Pb concentration morning on Monday and the minimum on Sunday. Tests were carried out on Monday morning, said that a Pb concentrated at a height of ± 1.5 meters from the ground is 4.130 ppm.

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Profil Pencemaran Udara Kawasan Perkotaan Yogyakarta: Studi Kasus di Kawasan Malioboro, Kridosono, dan UGM Yogyakarta

Cited by 11 publications

References 0 publications

Forecasting Using Sarima and Bayesian Structural Time Series Method for Range Seasonal Time

Forecasting Using Sarima and Bayesian Structural Time Series Method for Range Seasonal Time

Aktivitas Antioksidan Kulit Jeruk Pacitan (Citrus sinensis L.) Terhadap Kadar SGOT dan SGPT Rattus norvegicus Dengan Paparan Logam Berat Timbal (Pb)

Preliminary Measurement of Pb Concentration in the Jawi River Region City of Pontianak

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