• Title/Summary/Keyword: Weighing system

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Rainfall-Runoff Analysis of a Rural Watershed (농촌유역의 강우-유출분석)

  • Kim, Ji-Yong;Park, Ki-Jung;Chung, Sang-Ok
    • Proceedings of the Korean Society of Agricultural Engineers Conference
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    • 2001.10a
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    • pp.93-98
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    • 2001
  • This study was performed to analyse the rainfall and the rainfall-runoff characteristics of a rural watershed. The Sangwha basin($105.9km^{2}$) in the Geum river system was selected for this study. The arithmetic mean method, the Thiessen's weighing method, and the isohyetal method were used to analyse areal rainfall distribution and the Huff's quartile method was used to analyse temporal rainfall distribution. In addition, daily runoff analyses were peformed using the DAWAST and tank model. In the model calibration, the data from June through November, 1999 were used. In the model calibration, the observed runoff depth was 513.7mm and runoff rate was 45.2%, and the DAWAST model simulated runoff depth was 608.6mm and runoff rate was 53.5%, and the tank model runoff depth was 596.5mm and runoff rate was 52.5%, respectively. In the model test, the data from June through November, 2000 were used. In the model test, the observed runoff depth was 1032.3mm and runoff rate was 72.5%, and the DAWAST model simulated runoff depth was 871.6mm and runoff rate was 61.3%, and the tank model runoff depth was 825.4mm and runoff rate was 58%, respectively. The DAWAST and tank model's $R^{2}$ and RMSE were 0.85, 3.61mm, and 0.85, 2.77mm in 1999, and 0.83, 5.73mm, and 0.87, 5.39mm in 2000, respectively. Both models predicted low flow runoff better than flood runoff.

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Childbearing women of twenty and under are at greater risk than those of twenty-five and over for compromised folate status

  • Kim, Hee-Ah;Choi, Jeong-Hwa;Lim, Hyeon-Sook
    • Nutrition Research and Practice
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    • v.1 no.4
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    • pp.254-259
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    • 2007
  • This study assessed folate intakes, folate concentrations in plasma and erythrocytes, plasma total homocysteine (tHcy) concentration, and urinary excretion of folate metabolites in Korean women with childbearing potential. A total of 23 women voluntarily participated in this study. Precise dietary intakes for 3 consecutive days were determined by weighing all foods consumed and folate intake was calculated using a computer-aided dietary analysis system. Folate concentration of plasma and erythrocytes was determined by a microbiological method. Plasma tHcy concentration was assayed using an HPLC analysis method. Urine excreted over the same period of time was collected and folate catabolites, para-aminobenzoylglutamate (pABG) and para-acetamidobenzoylglutamate (ApABG), were evaluated using a reverse-phase HPLC method after affinity chromatography. Young women of 20 and under were likely to consume less folate with low energy intake, had lower folate concentration in plasma and erythrocytes, and excreted a lesser amount of ApABG and total folate catabolites than women of 25 years and over. The results of this study confirmed that young Korean women with childbearing potential, especially those under 21 years of age, might be at risk for compromised folate status due to insufficient folate intakes from inadequate energy consumption.

Closure of Patent Ductus Arteriosus in a Maltese Dog Using Amplatz Canine Duct Occluder through Femoral Vein

  • Suh, Sang-Il;Yoon, Won-Kyoung;Kim, Tae-Jun;Choi, Ran;Hyun, Changbaig
    • Journal of Veterinary Clinics
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    • v.33 no.4
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    • pp.221-224
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    • 2016
  • An 8 month-old male Maltese (weighing 2.0 kg) was referred with loud heart murmur at routine physical exam in local animal clinic. Electrocardiogram found left ventricular hypertrophy pattern (4.5 mV R-wave). Diagnostic imaging studies revealed the elongation of left ventricle (LV) with classic triple bumps on the main pulmonary artery, aorta and left atrium on the ventrodorsal view of radiograph. Echocardiography revealed patent ductus arteriosus (PDA) duct and continuous turbulent shunt flow (maximal velocity 4.83 m/s) between the aorta and pulmonary artery with left to right direction. The PDA in this dog was successfully closed through femoral vein (transvenous approach) using a 5 mm Amplatz$^{(R)}$ Canine Duct Occluder. To the best of author's knowledge, this is the first case of PDA occlusion treated with Amplatz Canine Duct Occluder through femoral vein.

Intelligent Hexapod Mobile Robot using Image Processing and Sensor Fusion (영상처리와 센서융합을 활용한 지능형 6족 이동 로봇)

  • Lee, Sang-Mu;Kim, Sang-Hoon
    • Journal of Institute of Control, Robotics and Systems
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    • v.15 no.4
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    • pp.365-371
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    • 2009
  • A intelligent mobile hexapod robot with various types of sensors and wireless camera is introduced. We show this mobile robot can detect objects well by combining the results of active sensors and image processing algorithm. First, to detect objects, active sensors such as infrared rays sensors and supersonic waves sensors are employed together and calculates the distance in real time between the object and the robot using sensor's output. The difference between the measured value and calculated value is less than 5%. This paper suggests effective visual detecting system for moving objects with specified color and motion information. The proposed method includes the object extraction and definition process which uses color transformation and AWUPC computation to decide the existence of moving object. We add weighing values to each results from sensors and the camera. Final results are combined to only one value which represents the probability of an object in the limited distance. Sensor fusion technique improves the detection rate at least 7% higher than the technique using individual sensor.

Development of Benchmark Index of LoS for Asset Management of Water Treatment Facilities (정수시설 자산관리 LoS분석 벤치마크지수 개발)

  • Nam, Youngwook;Hyun, Inhwan;Lee, Chulsung;Chun, Mingyu;Kim, Mincheol;Kim, Dooil
    • Journal of Korean Society of Water and Wastewater
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    • v.29 no.6
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    • pp.667-683
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    • 2015
  • Since aged water treatment facilities could threaten the sustainable water supply, asset management system has been adopted for their systematic management. Level of Service(LoS) is one of critical components of asset management and could be quantified through benchmark index(BMI). Water supplier could estimate consumer's satisfaction and their performance through BMI to improve the LoS. We developed BMI for water treatment facilities from customer's satisfaction survey. BMI, represented with the Total Service Score(TSS), was assessed with water quality, water pressure, taste and odor, water rate, and service quality with weighing factors. BMI could, further, be used to assist the analysis of the life cycle cost to increase the unit of LoS.

The Study on Temperature Measurement of Warm Needling Using Stainless Steel Needle and Gold Needle (금침과 스테인레스침을 이용한 온침에서의 부위별 온도측정 연구)

  • Yeo, Sujung
    • Korean Journal of Acupuncture
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    • v.30 no.3
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    • pp.178-184
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    • 2013
  • Objectives : The warm needling technique is the method combining the effects of acupuncture needle with those of moxibustion. We need to standardize the characteristics of the warm needling technique, in order to get more systematic and objective results in operation and effects and then get more clinical abilities in these fields. Methods : In this study, using labview system on the warm needling technique, we measured and compared partial temperature changes according to the kind of needle. We studied relations of moxa cones of various sizes with the peak combustion temperature. Results and Conclusions: When we measured the warm needling's partial temperature, temperature measured at 1 and 2 cm below the head, according to the kind of needle, gold needle got the higher result on the peak than SS304 stainless steel needle. In the case of combustion of the moxa cones, cones weighing 0.4 g and 0.8 g, respectively, and the apex ignition method with gold needle showed the higher result than the apex ignition method with stainless steel needle, when we measured the effective stimulus time at 2 cm below the head and the mean temperature during the effective stimulus time. Although more research to standardize the characteristics of the warm needling technique will be needed, we suggest, according to these results, that warm needling of gold needle combined with moxa cone of 0.4 or 0.8 g is effective.

Analyzing Factors Influencing the Introduction of Smart Factory : Focusing on Type of Manager and Firm age (스마트 팩토리 도입에 영향을 미치는 요인 분석 : 경영인 유형과 업력을 중심으로)

  • Lee, Dasol;Boo, Jeman;Jung, Hunsik
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.43 no.2
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    • pp.110-119
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    • 2020
  • In order to provide priorities of the factors affecting the introduction of Smart Factory, This study reconstructed the factors and calculated the priorities through AHP (Analytic Hierarchy Process). The first layer of the hierarchy have 4 factors; productivity increase, brand image improve, marketing improve, cost reduction. The second layer of the hierarchy have 3 factors belong to the first layer, so the total number of second layer is 12. We divided the characteristics of enterprises into type of manager and age. The C.R. (consistency ratio) values of the respondents were found to be less than 0.1 and were judged to be a 'reasonable test'. As a result, the weights of the higher layer and the lower layer were obtained respectively, and then the weights of the higher layer and the weights of the lower layer were multiplied to obtain the total weights. Unlike previous studies that only surveyed factors that companies consider when introducing smart factory, (1) weighing and prioritizing factors were achieved. There are differences in priorities, (2) smart factory can be studied with the type of manager and firm age. When establishing policies, it is a practical implication (3) to assess its strategy not only for government officials but also for executives.

Immunosuppressive Effect of the Intraperitonially Injected Pine Needle Distillate in Mice

  • Chung, Young-Jin;Bae, Myung-Won;Chung, Kyeong-Soo
    • Preventive Nutrition and Food Science
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    • v.8 no.1
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    • pp.7-12
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    • 2003
  • This study examined the effect of pine needle distillate (Pinus densiflora Sieb. et Zucc) on the immune system and hematological parameters. C57BL/6 male mice weighing 20 ~21 g were divided into 3 groups and intraperitonially injected with either 200 $\mu$L of saline (control), 50% diluted (P50) or 100% pine needle distillate (P100) once a day for 24 days. At the end of the experiment, the mice were anesthetized by ether and peripheral blood was collected from the femoral artery and the spleen was excised. Spleen weight decreased significantly (p<0.001) in the pine needle groups compared to the control group. The blood was used for a complete blood count and flow cytometrical analysis after immunofluorescence staining. The pine needle distillate dose-dependently decreased the CD4$^{+}$/CD8 sup +/ ratio (p <0.05), and showed a tendency to increase the mean FSC (forward scatter) values of the CD8$^{+}$T cells, while decrease the values of the CD4$^{+}$T cells. There were no significant differences in WBC, RBC and platelet counts among the three groups, but hemoglobin and hemoglobin-related parameters and platelet volume increased and red blood cell volumes decreased with the administration of the pine needle distillate. These results suggest that the pine needle distillate may have immunosuppressive effects.

Improved Micrometric Properties of Pyridostigmine Bromide, a Highly Hygroscopic Drug, through Microenccapsulation (고인습성 약물인 피리도스티그민의 마이크로캅셀화에 의한 분체 특성의 개선)

  • Kim, Dae-Suk;Kim, In-Wha;Chung, Suk-Jae;Shim, Chang-Koo
    • Journal of Pharmaceutical Investigation
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    • v.32 no.1
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    • pp.41-45
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    • 2002
  • The purpose of this study is to microencapsulate a highly hygroscopic drug, pyridostigmine bromide (PB), with a waterproof wall material, in order to increase the flowability of the drug particles. Polyvinylacetaldiethylaminoacetate (AEA), Eugragit E and Eugragit RS were examined as the wall materials. Microcapsules containing PB were prepared by the evaporation technique in an acetone/liquid paraffin system using aluminum tristearate as a core material, and evaluated for drug encapsulation efficiency, surface morphology, particle size and drug dissolution. The encapsulation of PB in the wall material was almost complete. Among the wall materials examined, AEA exhibited the most excellency in shape, surface texture, flowability, size distribution of microcapsules. Above results suggest that AEA would be a potential wall material for microcapsulation of highly hygroscopic drugs, such as PB. Through microencapsulation with AEA, inconvenience of handling of PB powders encountered in the process of weighing and packing the powders to tableting die or capsule body could be greatly improved.

Experimental study on the discharge coefficients and cavitation of conical orifices (원추형 오리피스의 유출계수와 캐비테이션에 관한 실험적 연구)

  • Kim, Byeong-Chan;Yun, Byeong-Ok;Park, Bok-Chun;Jo, Nam-O;Ji, Dae-seong;Jeong, Baek-Sun;Park, Gyeong-Am
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.21 no.10
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    • pp.1371-1379
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    • 1997
  • The high pressure drop is frequently required in the by-pass line of the pump or of the heat exchanger in power plants. However, cavitation produced by a high pressure drop could damage the pipe and pump blades. Conical orifices are adopted to reduce cavitation due to high pressure drop. The discharge coefficients of conical orifice plates were measured by weighing method in the standard water flow system. The discharge coefficients were larger when the ratios of thickness of orifice edge to throat diameter were larger. The noise generated from a conical orifice due to cavitation was measured with a sound level meter and a hydrophone. With increasing the bore diameter of the orifice, the sound pressure level or the noise level due to cavitation became higher. The noise level was suddenly increased at the inception of cavitation.