• Korean Journal of Veterinary Research
• /
• v.8 no.2
• /
• pp.117-120
• /
• 1968

Normal value of serum proteins of cockerels and pullets was obtained by seperating serum proteins of 80(♂40, ♀40)immature domestic fowls for routine clinical application purpose, using paper and agar electrophoresis. The concentration count of serum proteins which were fractionated was determined by using densitometer and planimeter. The fractionation value of serum proteins (of cockerels and pullets was indicated in the table 1. The composition of serum proteins by paper and agar electrophoresis showed remarkable differences between cockerels and pullets, but only ${\beta}$-globulin could not found difference between them.

• 제어로봇시스템학회:학술대회논문집
• /
• 2001.10a
• /
• pp.97.3-97
• /
• 2001

An experimental study was performed to establish the validity of an on-line state estimator for a semibatch MMA-MA copolymerization reactor by using on-line densitometer and viscometer under two different operating conditions; one without additional solvent feed and the other with solvent fed additionally. A conventional extended Kalman filter (EKF) was used as the state estimator and the experiment was conducted for the purpose of application to the control of copolymer properties. Further analysis was made by using off-line measurement data for the mole fraction of MMA in the remaining monomers and the solid content. It was found that the EKF could provide a good estimate for the states of the copolymerzation system ...

• Asian-Australasian Journal of Animal Sciences
• /
• v.7 no.3
• /
• pp.405-411
• /
• 1994

Purified myofibrils were prepared from ante-mortem stress and control lots of Taiwan country chicken breast and thigh muscles at death and afler storage at $4^{\circ}C$ for 0, 1, 2, 3, and 7 days post-mortem. Sodium dodecyl sulfate polycrylamide gel electrophoresis (3.2%) and densitometer were used to examine the effect of ante-mortem stress and control storage of muscle on titin and nebulin. Results indicated that titin and nebulin were more rapidly degraded in the control and the ante-mortem stress light muscles than in the control and ante-mortem dark muscles of Taiwan country chicken. In contrast, nebulin was shown to be more resistance to degradation in the ante-mortem stress dark muscle than in the control light muscle.

• Journal of the Korean Graphic Arts Communication Society
• /
• v.24 no.2
• /
• pp.25-33
• /
• 2006

The reality of domestic prints neither possesses an objective standard of standard density nor a spectrophotometric method in regard to process ink. As a result, it creates a difficult communication between a designer and a Prepresser as to estimating the color of reproduction prints. There was an experiment on paper, ink, and printing company to obtain the standard point. The result shows that paper has minimum effect on color reproduction as opposed to ink and different printing companies, which had a great effect. The purpose of this paper is to confirm how different the color reproduction properties of prints are using densitometer and spectrophotometer for three different ink companies. The process color inks of three different companies were used under the same printing environment in this experiment.

• 제어로봇시스템학회:학술대회논문집
• /
• 1998.10a
• /
• pp.468-473
• /
• 1998

A mathematical model was developed for a continuous re-actor in which free radical polymerization of methyl methacrylate (MMA) occurred. Elementary reactions considered in this study were initiation, propagation, termination, and chain transfers to monomer and solvent. The reactor model took into account the density change of the reactor contents and the gel effect. A control system was designed for a continuous reactor using extended Kalman filter (EKF) based non-linear model predictive controller (NLMPC) to control the conversion and the weight average molecular weight of the polymer product. Control input variables were the jacket inlet temperature and the feed flow rate. For the purpose of validation of the control strategy, on-line digital control experiments were conducted with densitometer and viscometer for the measurement of the polymer properties. Despite the com-plex and nonlinear features of the polymerization reaction system, the EKF based NLMPC performed quite satisfactorily for the property control of the continuous polymerization reactor.

• 유체기계공업학회:학술대회논문집
• /
• 1999.12a
• /
• pp.118-122
• /
• 1999

Thermal mass flow meter was developed using principle of convective heat transfer. The advantage of thermal mass flow meter is measuring mass flow directly, therefore, it is not required to use densitometer or temperature/pressure and DP gages. The final accuracy of this thermal mass flow meter is $\pm1.0{\%}$ or better, reproducibility is $\pm0.2{\%}$, and the response time is 600 ms. The thermal mass flow meter was developed from a single point to multi-points (maximum is 9 points), and the number of points is determined according to desired accuracy and size of piping/duct. Since this thermal mass flow meter adopted microprocessor based design, it is intrinsically accurate, self-error detectable, and has self-diagnosis function. The applications of this thermal mass flow meter are for measurement and control of HVAC air flow, other gas flow, and liquid flow.

• Restorative Dentistry and Endodontics
• /
• v.25 no.4
• /
• pp.499-508
• /
• 2000

The purposes of this study were to evaluate the validity of 2 kinds of digital radiography techniques in evaluating the radiopacity comparison of restorative materials and to determine the relative radiopacities of several kinds of compomer and flow able resin using these techniques. After taking radiographs of an aluminum step wedge, con-elation of optical density calibration curves were evaluated between conventional radiography with transmission densitometer and CD-Dent digital radiography (storage phosphor system) and between conventional one and RVG$^{(R)}$ digital radiography (CCD system). Compomers such as Dyract$^{(R)}$ AP, Compoglass$^{(R)}$, and Dyract flow$^{(R)}$, and flowable resins such as Ultraseal-XT$^{(R)}$ plus$^{TM}$, Revolution$^{TM}$, Aeliteflo$^{TM}$ and Tetric-flow$^{(R)}$ were used. Five specimens of 5mm in diameter and 2 mm thick were fabricated with each material. Radiopacities of the materials were measured using the above radiographic techniques and compared. The results were as follows: 1. When the optical density calibration curves were compared, conventional radiography and both CD-Dent and RVG$^{(R)}$ digital radiographies showed very high inverse correlations (${\gamma}$=-0.95, ${\gamma}$=-0.98 ; p<0.05). 2. All the tested restorative materials showed levels of radiopacity the same as or greater than that of dentin (p<0.05), Radiopacities of Dyract$^{(R)}$ AP, Compoglass$^{(R)}$, and Tetric flow$^{(R)}$ were greater than those of Revolution$^{TM}$, Aeliteflo$^{TM}$, or dentin (p<0.05). 3. Radiopacities of Dyract$^{(R)}$ AP, Compoglass$^{(R)}$, and Tetric flow$^{(R)}$ were shown to be greater than that of enamel when conventional radiography and CD-Dent digital radiography were used (p<0.05). Radiopacity of Dyract flow$^{(R)}$ was shown to be greater than that of Enamel when conventional radiography was used (p<0.05).

• Journal of the Korean Society of Radiology
• /
• v.5 no.6
• /
• pp.363-367
• /
• 2011

Generally, the osteoporosis of a middle-aged women have been reported that was a high risk in underweight, but the obese women have feasible osteoporosis. Therefor, the subjects were 120 middle-aged women that were diagnosed with osteoporosis in the bone mineral densitometer (BMD), this study was done for the purpose of analyzing the relationship between osteoporosis and body mass index (BMI) of the middle-aged women. We were determined BMI which was less than 18.5 underweight, 18.5 to 22.9 normal, 23.0 to 24.9 overweight, 25.0 to 29.9 obesity and extremely obesity were more than 30. When we examined the BMI distribution of the subjects, it was 2 women (1.7%) for underweight, 18 women (15.0%) for normal, 19 women (15.8%) for overweight, 75 women (62.5%) for obesity and 6 women (5.0%) for extremely obesity. Also, the relationship between osteoporosis and BMI of the subjects, it was the osteoporosis in 13 cases out of 18 (72.2%) with normal, in 14 case out of 19 (73.7%) with overweight, in 63 case out of 75 (84%) with obesity, in 5 case out of 6 (83.3%) with extremely obesity, besides, the osteoporosis usually marks the highest in a BMI with obesity. In conclusion, the result of analyzing the relationship between osteoporosis and BMI, we found out that the osteoporosis of the middle-aged women was high risk with obesity, and that was mostly higher the osteopenia rather than osteoporosis.

• Korean Journal of Veterinary Research
• /
• v.22 no.2
• /
• pp.115-119
• /
• 1982

Total protein levels of 60 bovine bull sera were treasured with refractometer and the strum proteins were fractionated by cellulose acetate membrane electorphoresis and the relative amount of each fraction was measured with automatic scanning densitometer. The sixty bovine bulls consisted of 17 Charolais bulls, 28 Holstein bulls and 15 Korean bulls. Mean total serum protein level of the total bulls was $7.50{\pm}0.50(Mean{\pm}SD)$, with the mean of Charolais $7.04{\pm}0.37g/dl$, the mean of Holstein $7.62{\pm}0.40g/dl$ and the mean of Korean $7.81{\pm}0.43g/dl$. As barbital-calcium buffer was used in fractionating the bovine serum protein with cellulose acetate membrane, electric current of 0.4 mA per centimeter width of the membrane for an hour resulted in more clear separation between ${\alpha}_1$-globulin and ${\alpha}_2$-globulin than electric current of 0.6 or 1.0 mA for an hour. However ${\alpha}_1$-globulin and ${\alpha}_2$-globulin could not be measured separately with automatic scanning densitometer. Mean serum albumin level of total bulls was $3.54{\pm}0.42g/dl$, with the mean of Charolais $3.42{\pm}0.26g/dl$, the mean of Holstein $3.69{\pm}0.38g/dl$ and the mean of Korean $3.39{\pm}0.55g/dl$. Mean serum ${\alpha}$-globulin level of the total bulls was $0.62{\pm}0.14g/dl$, with the mean of Charolais $0.61{\pm}0.07g/dl$, the mean of Holstein $0.60{\pm}0.11g/dl$ and the mean of Korean $0.67{\pm}0.23g/dl$. Mean ${\beta}$-globulin level of the total bulls was $0.85{\pm}0.21g/dl$, with the mean of Charolais $0.74{\pm}0.11g/dl$, the mean of Holstein $0.83{\pm}0.14g/dl$ and the mean of Korean $1.02{\pm}0.30g/dl$. Mean serum ${\gamma}$-globulin level of the total bulls was $2.48{\pm}0.45g/dl$ with the mean of Charolais $2.27{\pm}0.37g/dl$, the mean of Holstein $2.48{\pm}0.44g/dl$ and the mean of Korean $2.72{\pm}0.47g/dl$.

• Journal of Periodontal and Implant Science
• /
• v.35 no.3
• /
• pp.649-659
• /
• 2005

The purpose of this study was to quantify and compare the level of MMP-1 in the healthy or inflamed gingival tissue of patients with or without type 2 diabetic mellitus. We investigated whether mean amount of MMP-1 was changed by chronic periodontitis and type 2 DM. Gingival tissue samples were obtained during periodontal surgery or tooth extraction. According to the patient's systemic condition & clinical criteria of gingiva, each gingival sample was divided into the three group. Group 1(n=8) was clinically healthy gingiva without bleeding and no evidence of bone resorption or periodontal pockets, obtained from systemically healthy 8 patients. Group 2(n=8) was inflamed gingiva from patients with chronic periodontitis. Group 3(n=8) was inflamed gingiva from patients with chronic periodontitis and type 2 diabetes. Tissue samples were prepared and analyzed by Western blotting. The quantitative analysis of MMP-1 was performed using a densitometer and statistically analyzed by ANOVA. MMP-1 was expressed in all samples and an increased MMP-1 level was observed in group 2 compared to group 1 and decreased MMP-1 level was found group 3 compared to group 2, but the differences among 3 groups were not statistically significant. In conclusion, this study demonstrated that MMP-1 levels of inflamed gingiva of systemically healthy patient(group 2) were higher than normal gingiva of systemically health patients and although the severity of gingival inflammation in group 2 and 3 were similar, MMP-1 expression was decreased in diabetic patients than systemically healthy periodontal patients.