Analisys Of Dust Levels And Masks USAge Behavior On Respiratory Disorder Complaints Of Rice Milling Workers

Background: The Impementation of occupational safety and health at home industry in Ponorogo is not yet optimal, one of them is rice milling industry which produces rice dust during the production process. Dust levels that exceeds the threshold limit value may cause respiratory disoder complaints. The use of masks that conform with standard is one of way to reduce dust exposure to workers. The objective of this research is to analyze the dust level and masks USAge behavior on respiratory disorder complaints of rice milling workers in Gegeran Village, Sukorejo, Ponorogo. Methods: This research used the observational analytical method with the cross-sectional design. Its population was 23 workers. The samples of research were taken by using the total sampling technique. Measurement of dust level used high volume sampler. Measurement of masks USAge behavior and respiratory disorder complaints used questionnaire. Data analysis used Lambda test in SPSS program version 24. Result: Dust levels of rice milling indoor and outdoor exceeds the threshold limit values, each of them is 598,3 mg/m3 and 11,08 mg/m3. Score of use mask behavior is 72,5%. Rice milling workers that have respiratory disorder complaints is 19 workers (83%). The result of Lambda test shows that there is no significant correlation between dust levels and masks USAge behavior with respiratory disorder complaints. Conclusion: Dust levels and masks USAge behavior has no significant correlation to respiratory disorder complaints of rice milling workers in Gegeran Village, Sukorejo, Ponorogo

LAPORAN PELAKSANAAN KULIAH KERJA NYATA REGULER UNIVERSITAS AHMAD DAHLAN PERIODE LIV TAHUN AKADEMIK 2016/2017 Unit II.A.3 Desa : Getasan Kecamatan : Getasan Kabupaten/ Kota : Semarang Propinsi : Jawa Tengah

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Variation of Heartwood Proportion and Wood Colour From Fast Grown 5-Year-Old Teak

The heartwood percentage and wood colour of Fast plantation grown teak destined for harvest at 5 years of age were characterized using automatic image processing 'ImageJ' routines and CieLab's colour system with the following coefficients: L for lightness, a* for redness and b* for yellowness. Analyses were conducted on material from different dry and wet sites. Comparison with 6-year old plantation from a dry site was conducted to study differences arising in older trees. Analyses of variation of those properties between and within different tree diameter classes were also conducted. The results showed that brightness, redness and yellowness values of 5-year old teak trees were 60.7, 10.7 and 23.1, respectively. Tree clone had a more dominant effect on wood colour and heartwood proportion than site, thus if specific colour preferences are needed of plantation trees, clone selection is important. The drier site produced larger proportions of heartwood in trees, as well as a more attractive figure. The trees produced heartwood proportions of 20% and 14% from the dry and wet sites respectively. On average, these 5 year old teak trees already produced 18% heartwood. Faster tree growth (larger diameter) appeared to have produced significantly larger heartwood proportions. Radially, the palest colour (the highest L but the lowest a*b* parameters) occurred in an area between heartwood and sapwood indicating the presence of a transition zone in all the tree samples