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Ohba K.,Livera J.R.J.,Seneviratne R.W.,Serjmyadag D.,Shimada K.,Fukushima M.,Han Kyu-Ho,Lee Chi-Ho,Sekikawa M. Korean Society for Food Science of Animal Resource 2006 한국축산식품학회지 Vol.26 No.1
The aim of this study was to determine the best processing conditions for producing of dried lean pork as a ready-to-serve product without using large-scale machines. Lean pork sausage was produced using 1.27% sodium chloride, 0.075% sodium polyphosphate, 0.06% sodium ascorbate, 0.075% sodium pyrophosphate, 0.009% sodium nitrite, 0.009% dextrin, 0.11% sodium glutamate and 1.4% spice mixture. The most appropriate slice thickness for drying was examined by slicing the sausage at a 0.5, 1 and 2 cm thickness. The drying temperatures were determined by drying the sausage slices at 35, 48 and $68^{\circ}$. The total drying period was for 12 hr, In order to examine the ability of this process to sterilize the pork, the raw meat materials were inoculated with Escherichia coli (E. coli). The optimal conditions for producing lean pork sausages were a 2 cm slice thickness and drying temperature of $68^{\circ}C$ for 12 hr, The moisture content water activity, color, hardness and pH were measured in the dried product. The product had a moisture content of 47.5% and a water activity of 0.93. There was a 47.7% percentage reduction in moisture. The dried product tested negative for E. coli even though the raw meat materials been inoculated with E. coli.
K.Ohba,R.C.J.Livera,R.W.Seneviratne,D.Serjmyadag,K.Shimada,M.Fukushima,Kyu Ho Han,Chi Ho Lee,M.Selilawa 한국축산식품학회 2006 한국축산식품학회지 Vol.26 No.1
The aim of this study was to determine the best processing conditions for producing of dried lean pork as a ready-to-serve product without using large-scale machines. Lean pork sausage was produced using 1.27% sodium chloride, 0.075% sodium polyphosphate, 0.06% sodium ascorbate, 0.075% sodium pyrophosphate, 0.009% sodium nitrite, 0.009% dextrin, 0.11% sodium glutamate and 1.4% spice mixture. The most appropriate slice thickness for drying was examined by slicing the sausage at a 0.5, 1 and 2 cm thickness. The drying temperatures were determined by drying the sausage slices at 35, 48 and 68 ℃. The total drying period was for 12 hr. In order to examine the ability of this process to sterilize the pork, the raw meat materials were inoculated with Escherichia coli (E. coli). The optimal conditions for producing lean pork sausages were a 2 cm slice thickness and drying temperature of 68 ℃ for 12 hr. The moisture content, water activity, color, hardness and pH were measured in the dried product. The product had a moisture content of 47.5% and a water activity of 0.93. There was a 47.7% percentage reduction in moisture. The dried product tested negative for E. coli even though the raw meat materials been inoculated with E. coli.
Kim, K.-H.,Wasano, N.,Ohba, M. 동의대학교 기초과학연구소 1999 基礎科學硏究論文集 Vol.9 No.1
Four Lepidoptera-specific reference strains of Bacillus thuringiensis, belonging to serovars sumiyoshiensis(H3a:3d), fukuokaensis(H3a:3d:3e), darmstadiensis(H10a:10b) and japonensis(H23), which produce spherical parasporal inclusions, were examined for comparative characterization of δ-endotoxins. SDS-PAGE profiles of the alkali-solubilized parasporal inclusions revealed the presence of single major protein bands of 130 kDa in the four strains. Chymotrypsin and trypsin treatment of the proteins gave profiles different from those of the strains HD-1(serovar kurstaki, H3a:3b:3c) and T84Al(serovar sotto, H4a:4b). Also, minor variations were observed in proteolysis profiles among the four strains. The LC_50 values of purified parasporal inclusions for the silkworm(Bombyx mori) larvae were 7·35, 6·45, 3·08 and 2·63 ㎍ g^-1 diet, respectively, showing that their toxicity levels were 5-15 times lower than that of the strain HD-1 (0·49㎍ g^-1 diet). Analysis by immunodiffusion and immunoblotting with polyclonal antisera revealed that parasporal inclusion proteins of the four strains are highly related, whereas they shared few or no common anitgens with those of the strains HD-1, T84Al and Buibui(serovar japonensis).
( Toshiaki Suzuki ),( Reina Ohba ),( Ei Kataoka ),( Yui Kudo ),( Akira Zeniya ),( Daisuke Segawa ),( Keisuke Oikawa ),( Masaru Odashima ),( Taiji Saga ),( Tomoyuki Kuramitsu ),( Hideaki Sasahara ),( K 대한소화기기능성질환·운동학회 2022 Journal of Neurogastroenterology and Motility (JNM Vol.28 No.1
Background/Aims Gastric acid secretion is suspected to be a pivotal contributor to the pathogenesis of functional dyspepsia. The present study investigates the potential association of the gastric acid secretion estimated by measuring serum pepsinogen with therapeutic responsiveness to the prokinetic drug acotiamide. Methods Dyspeptic patients consulting participating clinics from October 2017 to March 2019 were prospectively enrolled in the study. The dyspeptic symptoms were classified into postprandial distress syndrome (PDS) and epigastric pain syndrome (EPS). Gastric acid secretion levels were estimated by the Helicobacter pylori infection status and serum pepsinogen using established criteria and classified into hypo-, normo-, and hyper-secretion. Each patient was then administered 100 mg acotiamide thrice daily for 4 weeks, and the response rate to the treatment was evaluated using the overall treatment efficacy scale. Results Of the 86 enrolled patients, 56 (65.1%) and 26 (30.2%) were classified into PDS and EPS, respectively. The estimated gastric acid secretion was not significantly different between PDS and EPS. The response rates were 66.0% for PDS and 73.1% for EPS, showing no significant difference. While the response rates were stable, ranging from 61.0% to 75.0% regardless of the estimated gastric acid secretion level among subjects with PDF, the rates were significantly lower in hyper-secretors than in non-hyper-secretors among subjects with EPS (42.0% vs 83.0%, P = 0.046). Conclusion Although acotiamide is effective for treating EPS as well as PDS overall, the efficacy is somewhat limited in EPS with gastric acid hypersecretion, with gastric acid suppressants, such as proton pump inhibitors, being more suitable. (J Neurogastroenterol Motil 2022;28:53-61)
Lau, T.F.S.,Ohba, N.,Arikawa, K.,Meyer-Rochow, V.B. Korean Society of Applied Entomology 2007 Journal of Asia-Pacific Entomology Vol.10 No.1
The eyes of male and female Rhagophthalmus ohbai are of very different sizes and possess approximately 3000 and 35 facets, respectively. In the male eye one can distinguish a smaller dorsal region with 500 facets and a larger ventral one with ca. 1800. Ultrastructural differences between them have been described earlier in this journal (Lau and Meyer-Rochow, 2006). Electrophysiological recordings from the two eye areas have now revealed that the ventral region is maximally sensitive to light of 600 nm wavelength, while the dorsal eye region responds maximally to light of 540-560 nm wavelengths. In the dorsal eye region sensitivity to UV-radiation at around 360 nm wavelength, being twice as high as that of the ventral eye region, amounted to ca. one quarter of peak wavelength sensitivity. The regional differences in spectral sensitivity seem to be a reflection of the different tasks of the two eye regions: looking downward to see the yellow light emitted by a female, sensitivity towards longer wavelengths would be advantageous, but looking upward into the twilight sky, sensitivity to shorter wavelength would be a more appropriate adaptation.
Study on the surface pressure distribution of cubes in cross-wind arrays
Lim, H.-C.,Tsukamoto, K.,Ohba, M.,Mizutani, K. Elsevier Scientific Pub. Co 2014 Journal of wind engineering and industrial aerodyn Vol.133 No.-
In this study, effects of the gap on equal-spaced cubical bodies (150mmx150mmx150mm) placed in a turbulent boundary layer were investigated inside an atmospheric boundary layer wind tunnel. This study includes various measurements of surface-pressure distribution around a building in close proximity to surrounding obstacles. In addition, we examined the surface-pressure variation with cube distances (G) at 75mm (0.5h), 150mm (1h), 225mm (1.5h) and ~ (i.e., a single cube). The experiments conducted included some boundary layer wind tunnel tests with Hot Wire Anemometry (HWA) and mean and fluctuating surface-pressure measurements around a set of cubes aligned in parallel. The tunnel tests were carried out at two different Reynolds numbers (Re=4.6x10<SUP>4</SUP> and 6.7x10<SUP>4</SUP>), based on wind velocity U<SUB>h</SUB> (4.5m/s and 7.3m/s) at a cube height h. On analyzing the results, we discovered that the gap effect of surrounding models has a significant influence on the pressure variation around the central model. The overall surface-pressure coefficient around the central structure was generally found to increase as the gap (G) between the structures was increased.