• Title/Summary/Keyword: dry scale

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Investigation on Optimal Aeration Rate for Minimizing Odor Emission during Composting of Poultry Manure with Sawdust (계분톱밥 퇴비화시 악취발생의 최소화를 위한 적정 공기주입을 구명)

  • Kang, Hang-Won;Park, Hyang-Mee;Ko, Jee-Yeon;Lee, Jae-Saeng;Kim, Min-Tae;Kang, Ui-Gum;Lee, Dong-Chang;Moon, Huhn-Pal
    • Korean Journal of Environmental Agriculture
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    • v.20 no.4
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    • pp.225-231
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    • 2001
  • This study was conducted to find out the optimal aeration rates for minimizing odor emission and for increasing biological activities during composting of livestock manure in the enclosed bench-scale reactor system. It was treated with the mixture of poultry manure and sawdust controlled the initial water content of 60%, then aerated continuously at four different aeration rates (0.1, 0.2, 0.4 and 0.6 L/min/kg dry-solids). The average emitted concentration of ammonia in 0.6 L/min/kg dry-solids during composting reached the level of 40% in comparison with that of 0.2 L/min/kg dry-solids. In cases of sulfur compounds such as hydrogen sulfide, methylmercaptan and ethylmercaptan, their concentrations decreased with increasing aeration rates and the emission time was shortened. But they didn't detect in the treatment of 0.6 L/min/kg dry-solids. The biological activity for composting showed a trend of increasing as aeration rates increased. The treatment of 0.6 L/min/kg dry-solids gave the highest biological activity and the best compost quality.

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Fabrication of a silicon pressure sensor for measuring low pressure using ICP-RIE (ICP-RIE를 이용한 저압용 실리콘 압력센서 제작)

  • Lee, Young-Tae;Takao, Hidekuni;Ishida, Makoto
    • Journal of Sensor Science and Technology
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    • v.16 no.2
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    • pp.126-131
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    • 2007
  • In this paper, we fabricated piezoresistive pressure sensor with dry etching technology which used ICP-RIE (inductively coupled plasma reactive ion etching) and etching delay technology which used SOI (silicon-on-insulator). Structure of the fabricated pressure sensor shows a square diaphragm connected to a frame which was vertically fabricated by dry etching process and a single-element four-terminal gauge arranged at diaphragm edge. Sensitivity of the fabricated sensor was about 3.5 mV/V kPa at 1 kPa full-scale. Measurable resolution of the sensor was not exceeding 20 Pa. The nonlinearity of the fabricated pressure sensor was less than 0.5 %F.S.O. at 1 kPa full-scale.

Evaluation of Compressibility of Rock Fill Materials by Large-Scale Oedometer Tests (대형 오이도미터 시험을 통한 Rockfill 재료의 압축성 평가)

  • Kim, Bum-Joo;Shin, Dong-Hoon;Jeon, Je-Sung;Lim, Jeong-Yeul
    • Proceedings of the Korean Geotechical Society Conference
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    • 2005.03a
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    • pp.627-632
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    • 2005
  • In this study, a series of large-scale oedometer tests was performed to investigate the compressibility of rock fill materials. The testing samples were prepared to have three different grain size distributions and for each distribution, exist in two different states(dried and saturated). The test results indicated that particle breakages occurred mainly for the particles larger than 4.75mm in size and increased with increasing grain sizes. Also, it was found that, for a dry sample as it became well-graged, its compressibility decreased and accordingly, its tangent constrained modulus increased. A comparion between the samples in dry and saturated states revealed that compressibility of the materials increases with increasing water content. The values of tangent constrained modulus calculated for the tested dry samples were larger by about 10 to 20%, on average, than those for the saturated samples.

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A Case Study of a Taeeumin Patient with Advanced Parkinson's Disease Having Orthostatic Hypotension (기립성 저혈압이 있는 진행된 파킨슨병 태음인 환자 치험 1례)

  • Lee, Mi-Suk;Park, Yu-Gyeong;Bae, Na-Young
    • Journal of Sasang Constitutional Medicine
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    • v.28 no.2
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    • pp.193-204
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    • 2016
  • Objectives This case study is about a Taeeumin patient with advanced Parkinson's disease identified as Dry-heat (Joyeol) pattern. In this study, we report significant improvement of non-motor and motor symptoms after treatment with Cheongsimyeonja-tang.Methods The patient was identified as Taeeumin Dry-heat (Joyeol) pattern and treated with Cheongsimyeonja-tang and acupuncture. The Unified Parkinson Disease Rating Scale (UPDRS) was used to assess the overall functions of the patient. And the global assessment scale (GAS) was used to assess the improvements of dizziness, bradykinesia and tremor after the treatment.Result and Conclusion The UPDRS total score decreased from 138 points to 86 points after 5 weeks treatment. And symptoms of dizziness caused by hypotension, bradykinesia, and tremor showed significant improvement in GAS after the treatment. Furthermore, sleep disturbance and constipation were reported to be improved after the treatment. In conclusion, this study shows that Sasang constitutional medicine can be effective treatment for Taeeumin patient with advanced Parkinson's disease having orthostatic hypotension.

The Comparison Study between Different Interventions for Treating Acute Ankle Sprain - Using Dry Needle, Bee Venom Acupuncture, Hwangryunhaedoktang Herbal Acupuncture - (급성기 족관절 염좌 환자에 대한 치료방법에 따른 효과 비교 연구 - 체침, 봉약침, 황련해독탕 약침액을 통해 -)

  • Kang, In;Moon, Ja-Young;Lim, Myung-Jang;Cho, Jae-Hee;Lee, Hyo-Eun
    • Journal of Acupuncture Research
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    • v.25 no.5
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    • pp.89-95
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    • 2008
  • Objectives : This study was aimed at comparing clinical effectiveness among dry needle, Bee Venom Acupuncture, Hwangryunhaedoktang Herbal Acupuncture for treating acute ankle sprain. Methods : The subjects in this study were sixty patients with lateral ankle pain who came to Jaseng Hospital of Oriental medicine from Oct. 28. 2007 to Jul. 14. 2008. Among them, the number of patients after 3 session of each treatment was 17 with dry needle, 18 with Bee Venom Acupuncture, 17 with Hwangryunhaedoktang Herbal Acupuncture, and they were evaluated with Numerical Rating Scale(NRS), and Ankle-Hindfoot Scale(AHS) before and after every session of treatment. Results : 1. Each group had significant decrease in NRS(P<0.05) and increase in AHS score(P>0.05) after 3 session of each treatment. 2. There was no significant difference among 3 groups after 3 session of each treatment. Conclusions : When treating patients with acute ankle pain, Acupuncture, Bee Venom Acupuncture, Hwangryunhaedoktang Herbal Acupuncture each has clinical effect.

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Spray Characteristic of Pressure-Swirl Nozzles Used in Small Scale Burner (기존 소형버너용 압력-선회노즐의 분무특성)

  • Lee, D.H.;Wang, W.W.;No, S.Y.
    • Journal of ILASS-Korea
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    • v.8 no.3
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    • pp.27-32
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    • 2003
  • It is important to improve the efficiency of the existing small scale burner which used in agricultural product dry system and gardening dry system. In order to economize fuel Consumption and decrease the exhaust emission especially $CO_2$, the better design for the small scale burner is needed. Spray characteristics are the essential element for the design. Macroscopic spray characteristics such as spray angle and breakup length were measured. SMD which is contained the Microscopic spray characteristics was measured too. SMD was measured at 8mm, I2mm, I6mm downstream of the nozzle tip for both Hago and Danfoss nozzles by the Malvern Particle Sizer.

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HEAT REMOVAL TEST USING A HALF SCALE STORAGE CASK

  • Bang, K.S.;Lee, J.C.;Seo, K.S.;Cho, C.H.;Lee, S.J.;Kim, J.M.
    • Nuclear Engineering and Technology
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    • v.39 no.2
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    • pp.143-148
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    • 2007
  • Spent nuclear fuel generated at nuclear power plants must be safely stored during interim storage periods. A dry storage cask to safely store the spent nuclear fuel should be able to adequately emit the decay heat from the spent nuclear fuel. Therefore, heat removal tests using a half scale dry storage cask have been performed to estimate the heat transfer characteristics of a dry storage cask under normal, off-normal, and accident conditions. In the normal condition, the heat transfer rate to an ambient atmosphere by convective air through a passive heat removal system reached 83%. Accordingly, the passive heat removal system is designed well and works adequately. In the off-normal condition, the influence of a half blockage in the inlet on the temperature appears minimal. In the accident condition, the temperature rose for 12 hours after the accident, but the temperature rise steadied after 36 hours.

A Case Report of Sjögren's Syndrome with Influenza A Virus Infection Treated with Korean Medicine (A형 독감을 동반한 쇼그렌 증후군 환자에 대한 한의치료 1례)

  • Lee, Gi-hyang;Jeon, Sang-woo;Kang, Sei-young
    • The Journal of Internal Korean Medicine
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    • v.40 no.5
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    • pp.1007-1013
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    • 2019
  • Objectives: The purpose of this study was to report the treatment of a patient suffering from $Sj{\ddot{o}}gren^{\prime}s$ Syndrome with influenza A virus infection with Korean medicine. Methods: We used herbal medicine, acupuncture, and moxibustion to treat a patient during hospitalization. We observed the changes in symptoms using the European League against Rheumatism $Sj{\ddot{o}}gren^{\prime}s$ Syndrome Patient Reports Index (ESSPRI) and a visual analogue scale (VAS). Results: After treatment for 17 days, the patient's symptoms showed improvement in joint pain, dry eye, and dry mouth. The ESSPRI score was decreased from 10 to 5.3. The VAS for dry mouth and dry eye were decreased from 10 to 6 and from 10 to 5, respectively. Conclusion: This clinical case study suggests that Korean medicine treatment that includes Insamyangyoung-tang-gami could be effective in the treatment of $Sj{\ddot{o}}gren^{\prime}s$ Syndrome.

Three Cases of Post-Covid-19 Dry Cough Treated with Maekmundong-tang (COVID-19 이후 후유장애로 발생한 마른기침에 대한 맥문동탕 치험 3례)

  • Yeong-seo Lee;Da-jung Ha;Kyoung-min Kim
    • The Journal of Internal Korean Medicine
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    • v.43 no.6
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    • pp.1208-1218
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    • 2022
  • Objective: The purpose of this study was to report three cases of post-COVID-19 dry cough that persisted even after taking Western medicine but was successfully treated with Maekmundong-tang. Methods: Three patients who were treated with Maekmundong-tang from March to June 2022 were selected from patients who visited Dong-Eui University Korean Medicine Hospital with post-Covid-19 dry cough. Jeil Maekmundong-tang Ext. granules were used to improve the cough. The effect of the treatment was evaluated using a visual analog scale, cough symptom score, and cough assessment test. Results: After the treatment, Cases 1, 2, and 3 showed decreases from 90 to 30, 65 to 0, and 70 to 20, respectively, for the visual analog scale score, decreases from 9 to 3, 5 to 0, and 5 to 3, respectively, for the cough symptom score, and decreases from 20 to 4, 9 to 1, and 8 to 3, respectively, for the cough assessment test score. Conclusion: Maekmundong-tang provided an effective improvement in the post-COVID-19 dry cough that persisted even after taking Western medicine.

Application of Soil Washing Technology to the Soil Contaminated by Heavy Metals (중금속에 의해 오염된 토양에 대한 토양세척기법의 적용성 연구)

  • 정동철;이지희;최상일
    • Journal of Korea Soil Environment Society
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    • v.2 no.2
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    • pp.53-60
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    • 1997
  • A series of batch and lab-scale pilot tests were conducted to optimize the design parameters for the application of soil washing techniques to the soil contaminated by heavy metals. Cu, Pb, and Zn were selected as target heavy metals. The concentrations of Cu, Pb, and Zn were 500mg/kg dry soil, 1, 000mg/kg dry soil, and 500mg/kg dry soil, respectively. Citric acid and oxalic acid were used for the extractants. In the batch tests, the extraction efficiencies for Cu, Pb, and Zn were 79%, 72%, 72%, respectively. The proper extractant concentration and dilution ratio(weight/volume) for Cu and Pb were turned to be citric acid 50mM and 1:5, respectively. The extraction efficiencies were enhanced with the addition of 1~2% OA-5 or SDS. From pilot scale tests for Pb, first stage and second stage of soil washing resulted in the extraction efficiency of 59% and 78%, respectively.

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