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All Journal AGRIVITA, Journal of Agricultural Science The Indonesian Journal of Gastroenterology, Hepatology and Digestive Endoscopy
Fumiaki Kitahara
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Agriculture, Biological Sciences & Forestry Medicine & Pharmacology

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Examination of Bamboo Measurement Method for Biomass Estimation in the Paung Laung Reserve Forest, Myanmar Kitahara, Fumiaki; Sato, Tamotsu; Win, Billy Ne; Takao, Gen; Win, Tun Tun; Maung, Kyaw Win
AGRIVITA, Journal of Agricultural Science Vol 41, No 1 (2019)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v40i3.2009

Abstract

The objective of this study was to investigate a method of measuring bamboo diameter at breast height (DBH) for biomass estimation using Monte Carlo sampling. The data for this study were collected in Paung Laung Reserve Forest, Myanmar. The research developed two different methods for determining required sampling numbers based on changes in the coefficient of variation (CV) with the sampling ratio and sampling size using 37 plots of bamboo. These sampling numbers were derived from the sampling ratio with a CV less than 10 % and the stability of the CV. The error ratios of the two results between measured and estimated bamboo biomass were 6.0 % and 6.9 %. It will be necessary to assess the balance between the estimation accuracy and survey time for carbon stock estimation of bamboo, which is indispensable for an accurate forest carbon accounting in Myanmar.
Life Style Factors Influencing Serum Pepsinogen Levels in Healthy Japanese: A Prospective Study Murdani Abdullah; Fumiaki Kitahara; Tadashi Sato; Yuichiro Kojima; Abdul Aziz Rani; Masayuki A. Fujino
The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy VOLUME 4, NUMBER 1, April 2003
Publisher : The Indonesian Society for Digestive Endoscopy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24871/4120036-10

Abstract

Background: Gastric cancer mass screening using serum pepsinogen has been recognized and several advantages of this methods over photofluorography have been shown by previous study. Aims: To determine the factors influence the serum pepsinogen levels in healthy subjects. Subjects Methods: One thousand and one hundred fourteen subjects who were screened for gastric cancer as part of a periodic health check. Blood samples were taken after fasting and stored below –20 ° C, until pepsinogen levels were assayed. Results: The subjects consist of 338 males (mean age 52.6+14.0) and 776 females (mean age 49.0+11.9). Age ranges from 19 to 81 years. The overall prevalence of chronic atrophic gastritis using a criterion PG I £ 70 hg/ml and PG I/II ratio £ 3.0 was 21.99 % in 1996 and 23.97 % in 2000. Bivariate analysis revealed a significant association between age, more salt consumption, fish favorable over meat and less than three time meal intake covariates with the lowering of PG I/II ratio. Smoking, drinking, BMI, weight and gender did not affect the changes of PG I/II ratio. Conclusion: Age and more salt consumption covariates have a strongest association with the decreased of PG I/II by multivariate analysis. Keywords: pepsinogen, dietary, drinking, smoking, atrophic gastritis
Co-Authors Abdul Aziz Rani Abdul Aziz Rani Masayuki A. Fujino Maung, Kyaw Win Murdani Abdullah Murdani Abdullah Sato, Tamotsu Tadashi Sato Takao, Gen Win, Billy Ne Win, Tun Tun Yuichiro Kojima