• Applied Biological Chemistry
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• v.6
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• pp.57-59
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• 1965

According to the result of the observations on the effect of the reagents, $CuSO_4{\cdot}5H_2O$, $ZnSO_4{\cdot}7H_2O$ $MnSO_4{\cdot}4H_2O$, $HgCl_2$, upon the mycelial growth of psalliota campestris $HgCl_2$ showed the strongest effect on checking the mycelial growth $(,.008{\sim}0.01%)$ $CuSO_4{\cdot}5H_2O(0.030%)$, $ZnSO_4{\cdot}7H_2O(0.080%)$, came next and the $MnSO_4{\cdot}4H_2O(0.100%)$ was the weakest. Writer also found that showed the promoting effect of the mycelial growth in appropriate Concentration (at $0.015%\;CuSO_4{\cdot}5H_2O$, $0.030%ZnSO_4{\cdot}7H_2O$).

• The Journal of Korean Medicine
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• v.18 no.1
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• pp.344-356
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• 1997

This experiment was performed in order to study the clinical effect of Sojadodamgangkitang on the pulmonary injury caused by $SO_2$. Healthy adult male rats weighing about 250g were divided into 4 groups-the Normal group, the Control group, the group of Sojadodamgangkitang administration for 5 days after $SO_2$ gas exposure(Sample I), and the group of Sojadodamgangkitang administration for 10 days before and for 5days after $SO_2$ gas exposure(Sample II). The results were obtained as. follows; 1. In comparison with Control group, Sample I and Sample II were revealed significant effect on the total number of leucocyte. 2. In comparison with Control group, Sample I and Sample II were revealed significant effect on. the erythrocyte sedimentation rate. 3. In the effect on the lung weight, Sample I and Sample II were revealed significantly. 4. In the effect on the lung TBA level, only Sample II was revealed significantly. 5. In the effect on the tracheal glycoprotein level, Sample I and Sample II were revealed significantly. According to above results, Sojadodamgangkitang had significant effect on the pulmonary injury caused by $SO_2$ in rats.

• Journal of the Korean Ceramic Society
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• v.20 no.4
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• pp.297-304
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• 1983

In this study a Comparative investigation of the effect of $K_2SO_4$ and $CaSO_4$ on the formation of calcium silicate was made. $K_2SO_4$ had little effect on C3S formation. More than 4.0wt% of CaSO4 hindered the reaction of $C_2S$ and CaO so $C_3S$ formation was restrained by forming the reaction rim around $C_2S$ Particles. And activation energy for $C_3S$ formation was calculated around to be 40kcal/mol irespective of the amount of $K_2SO_4$.

• Journal of Soil and Groundwater Environment
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• v.8 no.3
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• pp.23-29
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• 2003

Setschenow constants of six alkali and alkaline earth metal-based electrolytes (i.e., NaCl, KCl, CaCl$_2$, K$_2$SO$_4$, Na$_2$SO$_4$, NaClO$_4$) for three polycyclic aromatic hydrocarbons (PAHs) (i.e., naphthalene, pyrene, and perylene) were investigated to evaluate the influence of a variety of inorganic salts on the aqueous solubility of PAHs. Inorganic salts showed a wide range of K$\_$s/ values (L/mol), ranging from 0.1108 (NaClO$_4$) to 0.6680 (Na$_2$SO$_4$) for naphthalene, 0.1071 (NaClO$_4$) to 0.7355 (Na$_2$SO$_4$) for pyrene, and 0.1526 (NaClO$_4$) to 0.8136 (Na$_2$SO$_4$) for perylene. In general, the salting out effect of metal cations decreased in the order of Ca$\^$2+/>Na$\^$+/>K$\^$+/. The effect of SO$_4$$\^$2-/>Cl$\^$-/>ClO4$\^$-/ was observed for anions of inorganic salts. The K$\_$s/ values decreased in the order of perylene>pyrene>naphthalene for K$_2$SO$_4$. However, the order of decreasing salting out effect for NaCl, KCl, CaCl$_2$, and NaClO$_4$ was perylene>naphthalene>pyrene. Hydration free energy of the 1:1 and 2:1 alkali and alkaline earth metal-based inorganic salts solution was observed to have a meaningful correlation with Setschenow constants. Thermodynamic interactions between PAH molecules and salt solution can be of importance in determining the magnitude of salting out effect for PAHs at a given salt solution.

• Advances in environmental research
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• v.3 no.4
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• pp.355-365
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• 2014

The present study has been performed on one year old tree saplings of Azadirachta indica (L.), Cassia siamea (L.), Dalbergia sissoo (Roxb.), Eucalyptus rostrata (L.), Mangifera indica (L.) and Schyzygium cumini (L.) in order to assess the effect of exposure of $SO_2-NO_2$, alone and combination of two gases. Tree saplings have been exposed to an average of $495{\mu}g\;m^{-3}$ $SO_2$ and $105{\mu}g\;m^{-3}$ $NO_2$ for 40 d at the rate of $4hd^{-1}$ during 10:00 am to 01:00 pm in OTC. Total chlorophyll, specific leaf area (SLA), nitrate reductase (NR) activity, foliar protein, free proline content and free amino acids (AAs) of foliage have been the plant parameters, taken into consideration to evaluate the effect of gaseous exposure. Exposure of two gases has caused reduction in total chlorophyll content (P < 0.05, 0.01). Physiological and biochemical process has been seemed to be altered noticeable due to the combined effect of $SO_2+NO_2$ followed by $SO_2$ alone (P < 0.05, 0.01). $NO_2$ mediated stress has produced, stimulatory and inhibitory responses in tree saplings. Results reveal that tree saplings have been attempted to absorb the $NO_2$ through N assimilation pathway. E. rostrata, C. siamea have been emerged as moderate tolerant to $SO_2$ mediated stress followed by A. indica. Response pattern of S. cumini, M. indica and D. sissoo set them as good indicators of $SO_2-NO_2$ exposure. Effects of two gases on tree saplings have been found to be synergistic.

• Journal of the Korean Ceramic Society
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• v.21 no.3
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• pp.221-230
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• 1984

In this study an investigation was made to determine optimum ratio between $SO_3$, MgO and $K_2O$ that maximizes $C_2S$ formation in Clinkering reaction Using response surface analysis method. It was proved that 1) Residual $K_2O$ int he clinker should be converted to $K_2SO_4$ because $K_2SO_4$ has less effect on the burnability than $K_2O$, 2) Optimum ratio if $SO_3$/K2O is 1.5, 3) Optimun balance between $CaSO_4$ and MgO is to be adjusted to such a level that w/o SO3=0.7(w/o MgO-2).4) In case of lack of $K_2O$ free CaO was minimized when $K_2SO_4$=2.3w/o and MgO=1.5w/o but if remaining $K_2O$ was 2w/o free CaI was minimized in the level that $K_2SO_4$=2.3w/o and MgO =1.5 w/o but if remaining $K_2O$ was 2 w/o free CaO was minimized in the level that $K_2SO_4$=4.5w/o and MgO =3.0 w/o.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.22 no.8
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• pp.1111-1120
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• 1998

Spray Drying Absorber(SDA) system, where the combustion product gas is mixed with atomized limestone-slurry droplets and then the chemical reaction of $SO_2$ with alkaline components of the liquid droplets forms sulfates, has been widely used to eliminate $SO_2$ gas from coal fired power plants and waste incinerators. Liquid atomization is necessary because it can maximize the reaction efficiency by increasing the total surface area and dispersion angle of the alkaline components. First, numerical calculations using FLUENT are carried out to investigate $SO_2$ concentration distribution and thus to calculate $SO_2$ removal efficiency. So to attain the optimized spray conditions, then an electrostatic spraying system is set up and spray visualization is performed to show the effect of an electric field on overall droplet size. Next, the effect of an electric field on the concentrations of $SO_2$ is experimentally examined. Field strength is varied from -10 kV to 10 kV and configurations of conduction charging and induction charging are utilized. Consequently, the electrostatic removal efficiency of 501 increases about 30% with the applied voltage of ${\pm}10kV$ but is independent of polarity of the applied voltage. It Is also found that the conduction charging configuration results in higher efficiency of $SO_2$ removal that the induction charging configuration. Finally, the effect of slurry temperature on $SO_2$ removal is studied. The temperature influences on the electrostatic removal efficiency of $SO_2$.

• The Korea Journal of Herbology
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• v.27 no.3
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• pp.23-29
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• 2012

Objective : Sanguisorbae Radix(SO). that belong to Rosaceae is widely distributed in Asia including Korea, Japan and China. It has been used as traditional medicine from old times as a treatment for anti-inflammatory drugs. This study was designed to investigate the effects of n-BuOH fractions of SO on anti-oxidant effect and anti-microbial effect on $Streptococcus$ $mutans$ ($S.$ $mutans$). Methods : The anti-microbial effect of $n$-BuOH fractions of SO. was assessed by the paper disk diffusion method and anti-oxidant effect was assessed by the DPPH radical scavenging effect, Superoxide anion radical scavenging effect and SOD like ability. Results : DPPH radical scavenging of the $n$-BuOH fraction from SO in 50 ug/mL was shown to be Fr-2 (89.9%), Fr-3 (88.7%), Fr-4 (76.3%), Fr-1 (59.4%), Fr-5 (56.2%). Superoxside anion radical scavenging activity of the n-BuOH fraction from SO. in 50 ug/mL for Fr-3 was shown to be 78%. SOD-like activity of n-BuOH fraction from the SO in 1000 ug/mL for Fr-3 were shown to be 76.1% respectively. The $n$-BuOH fraction from the SO had high anti-microbial effect on $S.$ $mutans$. Conclusion : As a result, the $n$-BuOH fraction from SO. has good anti-microbial and anti-oxidant effects in a concentration-dependent manner.

• Journal of the Korean Ceramic Society
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• v.31 no.12
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• pp.1417-1422
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• 1994

Effect of MgO, CaSO4, and CaF2 addition on the formation of clinker minerals in portland cement have been investigated by measuring the amounts of free-CaO and C3S in the fired specimens and analyzing the Mg and S concentration in C3S and C2S. It was found that CaSO4 inhibited C3S formation but MgO addition offset this effect of CaSO4. MgO addition also enhanced the mineralizing effect of CaSO4+CaF2, resulting in the acceleration of C3S formation. It was suggested that Mg might inhibit the formation of sulphate compounds rim around C2S and thus C2S+CaOlongrightarrowC3S reaction was facilitated.

• The Journal of Korean Medicine
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• v.15 no.2 s.28
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• pp.173-183
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• 1994

The results about effects of Maecmoondongtang on the pulmonary function of $SO_2$ exposed rats were summerized as follows: 1. Maecmoondongtang reavealed significant effect on decrease of the lung weight in pulmomary edema of rats. 2. Maecmoondongtang reavealed very significant effect on decrease of the TBA value of lung. 3. It was recognized Maecmoondongtang had signiftcant effect on decrease of glycoprotein contents in trachea. 4. It was recognized maecmoondongtang had significant effect on decrease of mucos area in tracheal epithelium. 5. Maecmoondongtang had effects on recovery of the cillia cells of tracheal epithelium and inhibition of mucous secretion. According to the above result. it was recognized Gamimaecdongtang had significant effect on decrease of lung weight in pulmonary edema. the TBA value. glycoprotein contents in trachea. and mucous area in tracheal epithelium. and recovery of the cillia cells of tracheal epithelium. and inhibition of mucous secretion. So I think we can take advantage of this medicine very usefully for treatment of pulmonary edema. pheumonia. acute and chronic bronchitis etc.