• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2006년 추계학술발표대회 개요집
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• pp.32-34
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• 2006

• 대한조선학회논문집
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• 제45권1호
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• pp.87-92
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• 2008

In the load-carrying fillet weldments, which are common in ship structures, fatigue cracks can occur at the weld root, in addition to the weld toe. In particular, fatigue cracks originating from the weld root are difficult to detect and cause a significant reduction in the fatigue strength of a weldment. Therefore, it is important to note the fatigue failure mode of load-carrying fillet weldment. In this study, a series of fatigue test was carried out for the fatigue strength evaluation of longi-web connections that are typical kinds of the load-carrying fillet weldment.

• 동의생리병리학회지
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• 제28권1호
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• pp.59-62
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• 2014

Glucose uptake plays a pivotal role in maintaining whole body glucose homeostasis in adipocytes and skeletal muscles. In the present study we have shown that Fructus Piperis Longi Extracts (FPLE) can stimulate glucose uptake in OP9 adipocytes. The increasing effects of FPLE on glucose uptake were inhibited by compound C pretreatment, which means that the glucose uptake effects by FPLE were carried out by AMP-activated protein kinase (AMPK) activation. Further studies revealed that FPLE stimulated glucose transport occurs through a mechanism involving extracellular signal-regulated kinase (ERK1/2) activation.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2017년도 공동학술발표회
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• pp.133-133
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• 2017

• 대한조선학회논문집
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• 제45권1호
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• pp.81-86
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• 2008

Recently, a mesh-size insensitive structural stress definition that provides a stress state at weld toe with relatively larger mesh size compared to conventional approaches has been proposed. The structural stress definition is based on the elementary structural mechanics theory and provides an effective measure of a stress state in front of weld toe. In this study, as an experimental validation of structural stress method in obtaining the fatigue strength of weldments, a series of fatigue test has carried out for longi-web connections, which are representative of ship-like structures. Based on the result from this study, it is expected to develop a more precise fatigue strength evaluation technique and to reduce time and cost associated with the fatigue design of ship and offshore structures.

• 생약학회지
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• 제39권4호
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• pp.369-380
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• 2008

The essential oils from 73 aromatic herb drugs entered on Korean official formularies were tested for antibioticresistance inhibitory effect. When the oils were combined with ampicillin (Am) or amoxicillin (Amx) they showed significant inhibitory effects on the growth of multi-drug resistant Staphylococcus aureus SA2 in considerably low concentration. The most effective combination were oils from Magnoliae Flos or Piperis longi Fructus ($25{\mu}g/mL$)-Am or Amx ($4{\mu}g/mL$).

• 대한본초학회지
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• 제24권1호
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• pp.79-88
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• 2009

Objectives : It has been recently shown that Piperis Longi Fructus (PLF) is involved in the reduction of eosinophil recruitment and production of Th2 cytokines in vivo. However, the main therapeutic mechanisms of PLF remains a matter of considerable debate. To investigate the therapeutic mechanisms of PLF, we examined the influence of PLF on regulatory T cells number, IgE, histamine production in vivo and Th1/Th2 cytokine balance in vitro. Methods : All mice were immunized on two different days (21 days and 7 days before inhalational exposure) by i.p. injections of 0.2 $m\ell$ alum-precipitated Ag containing 100 ${\mu}g$ of OVA bound to 4 mg of aluminum hydroxide in PBS. Seven days after the second sensitization, mice were exposed to aerosolized ovalbumin for 30 min/day on 3 days/week for 12 weeks(at a flow rate of 250 L/min, 2.5％ ovalbumin in normal saline) and PLF (150 mg/kg) were orally administered 3 times a week for 8 weeks. Splenocytes from C57BL/6 mice at 8 weeks of age were stimulated with anti-CD3 (1 mg/ml) plus anti-CD28 (1 mg/ml) antibody for 48hrs. IL-4 and IFN-$\gamma$ in the culture supernatants were measured by ELISA Results : The suppressive effects of PLF on asthma model were demonstrated by the increase the number of regulatory T cells and by reducing IgE, histamine production in vivo and modulation of Th1/Th2 cytokine balance. Conclusions : These results indicate that PLF has a deep inhibitory effects on asthma model mice by increase the number of regulatory T cells, and by reducing IgE, histamine production.

• 대한한방부인과학회지
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• 제20권2호
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• pp.124-138
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• 2007

Purpose: This study was conducted to investigate the antimicrobial effects of the interior warming herbs on vaginal microbes. Methods: Staphylococcus aureus, Methicillin-resistant Staphylococcus aureus, Candida albicans and Gardnerella vaginalis were used for vaginitis-induced microbes. Lactobacillus gasseri, Streptococcus spp. and Escherichia coli HB101 were used for normal vaginal florae. And herbs for warming the interior (Zingiberis Rhizoma, Alpiniae Officinari Rhizoma, Aconiti Tuber, Anethi Fructus, Evodiae Fructus, Cinnamomi Cortex Spissus, Caryophylli Flos, Aconiti Tube, Zanthoxyli Pericarpium, Piperis Longi Fructus, Piperis Nigri Fructus) were used in this study. Antimicrobial activities were tested by the change of optical densities (OD) and colony test in vitro. Results: In the results of vaginitis-induced microbes, Anethi Fructus was decreased the OD values on MRSA and Gardnerella vaginalis and Aconiti Tuber was decreased on MRSA. There were no viable MRSA and Gardnerella vaginalis colony forming against Evodiae Fructus, Staphylococcus aureus and MRSA colony forming against Piperis Longi Fructus, Staphylococcus aureus colony forming against Piperis Nigri Fructus and MRSA colony forming against Zanthoxyli Pericarpium. In the results of normal vaginal florae, Zingiberis Rhizoma was decreased the OD values on Streptococcus spp. and all normal vaginal florae were showed viable colony forming against all experimental herbs. Conclusion: According to these results, we can suggest that some kinds of interior warming herbs have antimicrobial effects on vaginal microbes. So there might be needed to make furthermore studies to seek the herbs which have selective antimicrobial effect on pathologic vaginal microbes.

• 대한한의정보학회지
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• 제11권1호
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• pp.26-47
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• 2005

In this dissertation, I will focus on the channel entry, the effect, and the treatment throughout books of oriental medicine from ancient to modern in order to classify the medicines of the liver as main or supplementary organ. The results are as follows: 1. The kinds of the medicines of working of the liver(本臟) were 29, which were Amydae carapax(鱉甲), Chrysanthemi Flos(菊花), Cassiae Torae Semen(草決明), Plantaginis Semen(車前子), Scirpi Seu Sparganii(三稜), Ulmi Pasta Semen(蕪荑), Cinnamomi Cortex(肉桂), Fraxini Cortex(秦皮), Chaenomelis Fructus(木果), Corii Asini Colla(阿膠), Chuanxiong Rhizoma(川芎), Adenophorae Radix(沙蔘), Coicis Semen(薏苡仁), Acanthopanacis Cortex(五加皮), Zizyphi Spinosae Semen(酸棗仁), Picrorrhizae Rhizoma(胡黃連), Gentianae Radix(草龍膽), Citri Reticulatae Virdie Pericarpium(靑皮), Paeoniae Alba Radix(白芍藥), Paeoniae Rubra Radix(赤芍藥), Bupleuri Radix(柴胡), Peucedani Radix(前胡), Naturalis Indigo(靑黛), Citrus unshiu(橘葉), Rhinocerotis Cornu(犀角), Aucklandiae Radix(木香), Polygonati Odorati Rhizoma, Farfarae Flos(款冬花), Evodiae Fructus(吳茱萸), Citri Reticulatae Pericarpium(陳皮) . 2. The kinds of the medicines of working of other viscera(他臟) were 7, which were Astragaliadix(黃耆), Ginseng Radix(人蔘), pinelliae Rhizoma(半夏), Myristicae Semen, Euryales Semen, Arecae Semen, Piperis Longi Fructus. 3. Medicines, effected on the heart functioned through any other viscera are as follows: Arecae Semen works to treat Spleen Gi Entering the Liver(脾氣入肝), Piperis Longi Fructus, pinelliae Rhizoma(半夏), Euryales Semen and Myristicae Semen operate to treat Spleen Cold Entering the Liver(脾冷入肝), Astragali Radix(黃耆) and Ginseng Radix(人蔘) work to treat Spleen Vacuity Entering the Liver(脾虛入肝). In the study of concerning the medicines effected on the liver, It is considered that it dedicated to development of the medicines related to the disease of the liver and making efficient use of the medicines.

• 대한기계학회논문집
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• 제14권2호
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• pp.407-412
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• 1990

Elastic modulus of unidirectional short fiber composite has theoretically derived with the consideration of Poisson's ratios of matrix and fiber. Unidirectional short fiber composite is modeled as an aggregate of grains developed by Kerner. Under the assumption of extra strain at fiber ends, the strain distribution along the fiber's length is determined, and the elastic modulus is derived from this distribution. For the consideration of effects of Poisson's ratio, Kerner's results for particulate composites are adapted as boundary conditions. The effect of differences in Poisson's ratio of fiber and matrix on elastic modulus is studied. Proposed equation shows a good agreement with experimental data of Halpin and Tock, et al.