• Computers and Concrete
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• v.10 no.4
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• pp.349-360
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• 2012

In this paper, compressive strength, water permeability and abrasion resistance of concretes containing high volume fine fly ash (FFA) and fine ground palm oil fuel ash (GPA) were studied. Portland cement type I was replaced with FFA and GPA at dosages up to 70% by weight of binder. Ground river sand (GRS) was also used to replace Portland cement in order to indicate the level of filler effect. Results indicated that FFA was slightly more reactive than GPA. The replacement of 40-70% of FFA produced concretes with compressive strength, permeability and abrasion resistance comparable to those of normal concretes. The incorporation of GPA slightly reduced the performances of concretes as compared to those of FFA concretes. The reduction of Portland cement was partly compensated by the increase in pozzolanic activity of the fine fly ash and palm oil fuel ash and thus enabled the large replacement levels.

• Proceedings of the Korea Concrete Institute Conference
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• 2006.11a
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• pp.949-952
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• 2006

An understanding of rheological property on cement paste is one of the important factor to design concrete such as High-fluidity Concrete (HFC) for a specific application. The HFC is a specially proportioned hydraulic cement concrete that enables the fresh concrete to flow easily into the forms and around the reinforcement and prestressing steel without vibration and segregation. Use of this type of concrete for the concrete building construction, manufacture of precast, prestressed bridge elements provides the benefits of increased rate of production and safety, reduced labor needs, and lower noise levels. This paper presents the performance of rheological properties of cement paste incorporating domestic high-water-reduced-admixture (HWRA) for an Ultra-high-fluidity concrete (UHFC). Investigation was carried out on cement pastes with combinations of various dosages of HWRA and water/cement ratios.

• Biomolecules & Therapeutics
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• v.9 no.2
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• pp.140-142
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• 2001

This study was performed to evaluate an single dose oral toxicity of a new hepatotherapeutic agent GODEX (HEPADIF-S) in Sprague-Dawley rats. Male and female rats were administered dosages of 5, 2.5, 1.25 ,0.625, 0.3125, and 0 g/kg B.W. of GODEX, respectively. After single oral administration of GODEX to rats, we observed them daily for 2 weeks. GODEX slid not induce any toxic signs in the mortalities, clinical signs, body weight changes, and gross necropsy findings of rats. Based on these results, it is concluded that GODEX may have no side effect and its LD$_{50}$ value may be over 5 g/kg B.W, in rats.s.

• Biomolecules & Therapeutics
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• v.10 no.4
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• pp.258-267
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• 2002

In this study the general pharmacological profiles of AS6 on the central nervous system, cardiovascular and the other organs were investigated. The dosages given were 0, 250, 500 and 1000 mg/kg and drugs were orally administered. The animals used for this study were mice, rats and guinea pigs. Significant increases (p<0.01) in the charcoal transport capacity were observed at the high dose of 1000 mg/kg and significant increases in retardation of pain threshold were observed in the test using acetic acid in all dosed animals. However, AS6 showed no noticeable effects on general behavior, motor coordination, spontaneous locomotor activity, hexobarbital-induced sleep time, body temperature, analgesic activity in the test using hot plate method and anticonvulsant activity. Furthermore no noticeable effects were observed in cardiovascular functions in the isolated rat heart, contraction and relaxation of the smooth muscle in the isolated guinea ileum, gastric secretion and renal function.

• Journal of Sericultural and Entomological Science
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• v.32 no.1
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• pp.38-43
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• 1990

Effects of topical application of 100, 200 and 300ng/$m\ell$ of 3-indole butyric acid (3IBA) on larval parameters were studied in polyvoltine Pure Mysore breed of B. mori. Each concentration was administered independently, at 36h to III, IV ＆ V instars, at 48h to IV ＆ V instars, and at 72h to V instar larvae. Of the various dosages used, the repeated applications of loons of 3-IBA at 36h to III, IV ＆ V instars resulted in a significant increase in larval weight, silk gland weight, cocoon shell weight and fecundity and a significant decrease in larval duration and cocooning percentage when compared with the corresponding parameters of the untreated controls.

• Nuclear Engineering and Technology
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• v.53 no.6
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• pp.2019-2024
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• 2021

For evaluating the radiological safety of dismantled concrete, the process of disposal and recycling of the radioactive concrete generated during the dismantling of Kori Unit 1 is analyzed. Four scenarios are derived based on the analysis of the concrete recycling and disposal process, and the potential exposure to the workers and public during this process are calculated. VISIPLAN and RESRAD code are used for evaluating the dosages received by the workers and public in the following four scenarios: concrete inspection, transport of concrete by the truck driver, driving on a recycled concrete road, and public living near the landfilled concrete waste. Two worker exposure scenarios in the processing of concrete and two public exposure scenarios in recycling and disposal are considered; in all the scenarios, the exposure dose does not exceed the annual dose limit for each representative.

• Journal of Dental Anesthesia and Pain Medicine
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• v.22 no.6
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• pp.419-426
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• 2022

Topical anesthetics are routinely used in dental practice for various purposes. They are usually available at higher dosages and have serious potential adverse reactions, such as seizures, anaphylaxis, and acquired methemoglobinemia. To date, the scope of application of herbal plants and their extracts, which have medicinal properties, has been elaborated in the field of dentistry. The growing interest in herbal medication can be attributed to the increased safety profile of herbal agents, in contrast to synthetic preparations that have a higher risk of systemic complications. Herbal preparations can induce topical anesthesia with minimal side effects. Recently, many studies have reported the use of topical herbal preparations. The current review aimed to evaluate data from various articles comparing the capacity of herbal topical anesthetic formulations and conventional synthetic anesthetics in reducing pain perception when used as local anesthesia before dental procedures.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.233-234
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• 2021

This study proposed a condensation prediction method for mortar mixed with super retardant using the additive temperature method. As a result, it is believed that the condensation prediction using the additive temperature method is highly plausible.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2014.05a
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• pp.140-141
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• 2014

Nowadays, as to increased the workability of the press concrete and decrease the cracking, the fiber-reinforced admixture has been widely used. As the low adhesion force between the paste and fiber-reinforced admixture, it was considered as could not be used in the structure. Even more, as the loss of flowability and the exposure of the fiber, further study is needed. In this study, as the different environment and position of the building, the dosages of the fiber-reinforced admixture has also been changed. The fundamental properties and cracking of fiber-reinforced concrete have been tested.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2014.05a
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• pp.144-145
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• 2014

Nowadays, as to increased the workability of the press concrete and decrease the cracking, the fiber-reinforced admixture has been widely used. As the low adhesion force between the paste and fiber-reinforced admixture, it was considered as could not be used in the structure. Even more, as the loss of flowability and the exposure of the fiber, further study is needed. In this study, as the different environment and position of the building, the dosages of the fiber-reinforced admixture has also been changed. The fundamental properties and cracking of fiber-reinforced concrete have been tested.