Judul: Analysis of Relationship of Rice Milling Dust Exposure to Lung Function Capacity of Workers at UD.Nurmadinah.
Abstrak: Penelitian ini dilakukan untuk menganalisis hubungan paparan debu penggilingan padi terhadap kapasitas fungsi paru pekerja di UD.Nurmadinah dan mengukur jumlah pekerja yang terpapar debu di atas NAB maupun di bawah NAB, serta kondisi kapasitas fungsi paru pekerja.Metode penelitian menggunakan analisis deskriptif, dengan tahap observasi, studi pustaka dan pengujian. Pada penelitian ini digunakan uji analitik Univariat, Bivariate dan Crosstab dengan Chi-Square. Metode kualitatif berupa wawancara dan kuesioner digunakan untuk memperjelas dan memperdalam hasil penelitian kuantitatif. Diperoleh debu total ruangan (TSP) 0,769 mg/m³ yang berarti kadar debu total masih dibawah NAB < 3,0 mg/m³. Hasil uji Chi- square dengan α : 0,05 dari 9 faktor variable bebas (usia ,masa kerja, IMT dan status gizi, riwayat penyakit paru, konsumsi rokok, penggunaan dan pengaruh APD masker, dan paparan debu) terdapat 3 faktor yang terbukti berpengaruh terhadap kapasitas fungsi paru yaitu IMT dan status gizi dengan P= 0,049, riwayat penyakit paru dengan P= 0,005, dan pengaruh penggunaan APD dengan P= 0,028., This research was conducted to analyse the Relationship of rice milling dust exposure to lung function capacity of workers at UD.Nurmadinah and to measure the number of workers exposed to dust above and below the NAV and the condition of the workers' lung function capacity. The research method used is descriptive analysis, with the observation stage. , literature study and testing. In this study, Univariate, Bivariate, and Crosstab analytical tests were used with Chi-Square. Qualitative methods in the form of interviews and questionnaires were used to clarify and deepen the results of quantitative research. Total indoor dust (TSP) is 0,769 mg/m, which means the total dust content is still below NAV < 3,0 mg/m³. Chi-square test results with: 0,05 of 9 independent variable factors (age, years of service, BMI and nutritional status, history of lung disease, cigarette consumption, use and effect of PPE masks, and exposure to dust) 3 factors proved to have an effect on functional capacity lung disease, namely BMI and nutritional status with P = 0,049, history of lung disease with P = 0,005, and the effect of using PPE with P = 0,028.
Keyword: Dust Exposure, Dust Management, Lung Capacity, TLV

Judul: Analisis Kebisingan dan Dampak Lingkungan pada Proses Penggilingan Padi (Studi Kasus Penggilingan Padi Saluyu Situ Gede, Bogor Barat)
Abstrak: Rice mill process is one of the factors to increase the rice quality. Indonesia is one of the big rice producers in the world, it couldn't be imagined the noise if every single village has the rice mill enterprise. The purpose of this research is to analyse level and noise dissemination pattern in the rice mill, analyze maximum duration in the room based on noise threshold based on labor standard, analyze and measure noise in the surrounding of the rice mill area, as well as control the noise and analyze employee hearing deterioration. Data is collected by doing direct measurement in the field and interview towards 2 respondents. The result obtained is the highest noise in the place that is often passed by rice mill employee in the area near the diesel machine sized 105 dB, in the husker operation area sized 90 dB and in the polisher operation area sized 92 dB. Maximum time limit of being near to the diesel machine is safe and continued based on DEPNAKER RI standard with a noise level of 105 dB is 30 minutes, in husker operation area with a noise level of 90 dB is 4 hours and in polisher operation area with a noise level of 92 dB is 3 hours. Noise measurement result in a resident's house terrace is 65 dB and the noise level in PAUD class room is 58 dB. Technical design for the noise control by using barrier as a sound-damper building is designed for the resident's house and PAUD because the noise passes standard level of the allowed noise. For barrier design that has been made 180 cm high, noise reduction has estimated for 22%. Audiometric test result for 2 employees that work on rice mill is, for the respondent 1 with 45 years old has right ear got a medium deaf and the left ear got serious deaf and respondent 2 with 38 years old has both ears got minor deaf.
Keyword: audiometrict test, environmental noise, room noise, ricemill

Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology