• Title/Summary/Keyword: treatment time

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A Study on SCr420HB Helical Gear Deformative Simulation by Heat Treatment Quenching Method (열처리 냉각방식 변화에 따른 SCr420HB 헬리컬 기어 시뮬레이션 적용에 관한 연구)

  • Byun, J.H.;Byun, S.D.;Yi, C.H.
    • Journal of the Korean Society for Heat Treatment
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    • v.28 no.1
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    • pp.24-31
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    • 2015
  • In this study, a simulation was used to derive an optimal process of heat treatment with carburizing, and compared the derived result with SCr420HB helical gear in heat treatment with carburized quenching process about a change of the quenching method. The optimal carburizing process time is derived by the simulation with the theoretical time. The process has been performed by oil quenching and salt quenching method. Through the comparison of the results from the simulation(Hardness, effective case depth hardened by carburizing treatment and deformation) and the actual process, analyzed the error value of each quenching. And it verified the applicability of the simulation.

Effects of Heat Treatment on the Dietary Fiber Contents of Soybean sprout and Spinach (가열처리에 의한 콩나물과 시금치의 식이섬유 함량변화)

  • Lee, Eun-Young;Kim, Young-A
    • Korean journal of food and cookery science
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    • v.10 no.4
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    • pp.381-385
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    • 1994
  • The dietary fiber contents of soybean sprout and spinach were changed by heat treatment. Before heat treatment, soybean sprout and spinach had larger amount of insoluble dietary fiber than soluble, and similar proportions of insoluble v/s soluble dietary fibers. After heat treatment, the value of insoluble dietary fiber of soybean sprout and spinach was increased significantly, except for microwave heating short time treatment. It is believed that the increment of insoluble dietary fiber is due to Maillard reaction products and resistant starch after heat treatment. The change of soluble dietary fiber contents of soybean sprout and spinach were not consistent in heat treatment. It is supposed that some soluble dietary fiber was destroyed by heat treatment, and some insoluble dietary fiber was hydrolysed or destroyed to be soluble. Total dietary fiber of soybean sprout and spinach was significantly incereased by all heat treatment, except for microwave heating short time of spinach.

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Property Variations of ZnO-based MOS Capacitor with Preparation Conditions (ZnO를 사용한 MOS 커패시터의 제작 조건에 따른 특성 변화)

  • Nam, H.G.;Tang, W.M.
    • Journal of the Semiconductor & Display Technology
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    • v.9 no.3
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    • pp.75-78
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    • 2010
  • In this study we investigated the electrical properties of ZnO-based MOS capacitor with $HfO_2$ as the gate dielectric. MIM capacitor, which uses either $HfO_2$ or $Al_2O_3$ as the dielectric layer, is also studied to understand the dependency of the dielectrics on the preparation conditions. It was found that thinner $HfO_2$ films yield better electrical properties, namely lower leakage current and higher breakdown electric field. These properties were observed to deteriorate when subsequently annealed. Capacitance in the depletion region of MOS capacitor was found to increase with UV ozone treatment time up to 60min. However, when the treatment time was extended to 120min, the trend is reversed. The 'threshold voltage' was also observed to positively shift with UV ozone treatment time up to 60min. The shift apparently saturated for longer treatment.

An Experimental Study on the Effects of Aebaegeum Applicable to the Treatment of Epistaxis (鼻出血에 應用되는 艾柏飮의 效能에 關한 實驗的 硏究)

  • Hong, Ik-Pyo;Chae, Byeong-Yun
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.3 no.1
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    • pp.1-15
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    • 1990
  • Aebaegeum has been widely used in the treatment of epistaxis, as based on Oriental Medical 1iteratures. In order to investigate experimentally the clinical effects of Aebaegeum, hemostatic time, plasma recalcification time and prothrombin time of hypoprothrombinemia induced by warfarin injection, action on isolated ileum, action on blood vessel, action on blood pressure and respiration and action on heart were observed. The result of the studies were obtained as follows: 1. Hemostatic time of vein ruptured mice was significantly shortened. 2. Plasma recalification time and prothrombin time of hypoprothrombinemic rats induced by warfarin injection were significantly shortened. 3. Spontaneous mobilities in the isolated ileum of mice were significantly suppressed, and contraction by acetylcholine chloride and barium chloride were inhibited. 4. Dilatation of blood vessel and downing of blood pressure of rabbit were noted. 5. Contraction of heart in the original position and isolated heart of frog were significantly shortened. According to the above result, it is expected that Aebaegeum can be widely applicable to the treatment of epistaxis.

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Consideration of the benefits of using a high current accelerator in BNCT

  • Cho, Ilsung;Min, Sun-Hong;Park, Chawon;Kim, Minho;Lee, Kyo Chul;Lee, Yong Jin;Hong, Bong Hwan;Lim, Sang Moo
    • Journal of Radiopharmaceuticals and Molecular Probes
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    • v.6 no.1
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    • pp.10-19
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    • 2020
  • Boron Neutron Capture Therapy (BNCT) has the advantage of selectively removing cancer cells ingesting boron compounds. In this study, the benefits for treatment time and boron compound injection dose were compared between current neutron sources and a high current neutron sources to be developed in near future. The time-activity curve (TAC) of GBM (Glioblastoma) for one bolus injection was obtained by applying modified 3 compartment model. The treatment time was determined for an accelerator-based neutron sources at the present time and a high current accelerator based neutron source to be developed in the near future. In the case of the double amount of IAEA-recommended neutron flux, the treatment time was shortened to 15 minutes. In the case of high current accelerators, which are five times the amount of IAEA-recommended neutron flux, the irradiation time is within 5 minutes. The use of a high current accelerator based neutron source in BNCT is advantageous in terms of treatment time. In addition, it can increase the efficiency of use of neutrons and reduce the boron compound injection dose to patients, thus reducing pharmacological toxicity.

Effects of Weight Control by Behavior Modification and Aerobic Exercise (행동수정 프로그램과 에어로빅 운동의 시점별 체중조절 효과 비교)

  • 박종성;정승교
    • Korean Journal of Health Education and Promotion
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    • v.12 no.2
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    • pp.62-72
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    • 1995
  • We studied the effects of behavior modification and aerobic exercise on body weight, degree of obesity, % body fat, triceps skinfold thickness, blood pressure and eating behavior among overweight middle school girls. 15 girls participated in the behavior modification program by joining 60-90 minute group session weekly. The aerobic exercise program was given to 13 girls 3 times per week with 60 minutes each time. The data were obtained before treatment, after 4 and 8 weeks after treatment. In analyzing the data, repeated measures ANOVA were adopted. The results were as follows ; 1. For the changes of body weight between 2 groups, body weight of behavior modification groups decreased significantly than these of aerobic exercise group at 4 and 8 weeks after treatment, 2. For the changes of degree of obesity between 2 groups, there were no significant differences over time, 3. The analysis of change of % body fat did not reveal significant differences between 2 groups over time, 4. The changes of triceps skinfold thickness were significant differences between 2 groups over time, 5. For the changes of systolic blood pressure between 2 groups, there were significant differences over time. At 4 weeks after treatment, systolic blood pressure of behavior modification group decreased significantly than these of aerobic exercise group. 6. The changes of diastolic blood pressure were significant differences between 2 groups over time.

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A Clinical Study of Collaboration between Western and Korean Medicine for the Treatment of Peripheral Facial Palsy in a Korean Medicine Hospital

  • Kim, Jaewon;Kim, Yongsuk
    • Journal of Acupuncture Research
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    • v.37 no.3
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    • pp.161-166
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    • 2020
  • Background: The purpose of this study was to investigate the characteristics and direction of treatment for peripheral facial palsy (PFP) based on medical collaboration between Western and Korean medicine departments. Methods: There were 195 outpatients with PFP identified retrospectively by examining electronic medical records. These patients were treated with Korean and Western medicine from January 1st, 2018 to December 31st, 2018 at the Kyung Hee University hospital. Records were analyzed according to the patients' demographic characteristics and clinical features of the collaborative combined treatment. Results: According to the collaborative treatment pathway, the number of patients consulted from Western medicine departments was more than consulted from Korean department for the first time. The time taken by the Western medicine departments to consult with the patients at the Korean center for the first time was 14.9 days from the onset of symptoms. Acupuncture was the most frequently used Korean medicine treatment. The total treatment period for Korean medicine sessions and intervals were 91.9 days, 23 times and 3.6 days, respectively. When the Korean medicine center consulted with Western medicine departments, the time taken until the first consultation was 8.5 days from the onset of symptoms. Medication was the most used treatment, prescribed after 3.1 days. The most frequently used clinical test was an electromyogram, and this was performed after 20.5 days. The total treatment period, sessions and intervals were 21.2 days, 2.8 times and 5 days, respectively. Conclusion: The clinical status of collaborative treatment for PFP was determined including the timing and interval of consultation according to treatments.

A Clinical Report on 35 Inpatients with Facial Paralysis Effects of Early Oriental Medicine Treatment on House-Brackmann Grade in Bell's Palsy (벨마비 입원환자 35례에 대한 임상보고 조기 한방치료가 벨마비에서 House-Brackmann grade에 미치는 영향을 중심으로)

  • Yang, Hyun-Ju;Joo, Hyun-A;Baek, Sang-Chul;Park, Jin-Soo;Hong, Seok-Hoon
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.24 no.3
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    • pp.108-118
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    • 2011
  • Objective : This study was designed to evaluate the influence of time from onset of Bell's palsy until commenced Oriental medicine therapy on Bell's palsy. Methods : We investigated 35 cases of patients with peripheral facial palsy who visited Wonkwang University Oriental Hospital from 10th, December 2010 to 31st August, 2011 and classified them as time from onset of Bell's palsy until commenced Oriental medicine therapy. Time from onset of Bell's palsy until commenced Oriental medicine therapy of Group A was within 3 days. Group B was from 4 days to 8 days. We evaluate the treatment effect of each group by House-Brackmann grade before treatment and 1,3 week treatment. Results : 1. There was a statistical difference in period from onset of Bell's palsy until commenced Oriental medicine therapy between Group A and Group B. 2. There was a statistical difference after 1 week treatment in Group B. 3. There was a statistical difference after 3 weeks treatment in both Group A and B.3. After 3 week treatment, there was statistical significant difference in decreased value of House-Brackmann grade between Group A and Group B. Group A showed more recovery compared with Group B. Conclusions : 1. These results suggest that early oriental medicine treatment could be more effective in recovery of Bell's palsy. 2. Further studies will be required to identify the beneficial effect of early oriental medicine treatment in bell's palsy.

Efficacy of Thermal Therapies in Masseter Area - Thermographic Study - (악안면부에 대한 수종 온냉요법시의 체열변화에 관한 비교연구)

  • Sun-Ho Kim;Jung-Pyo Hong;Eui-Hwan Hwang
    • Journal of Oral Medicine and Pain
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    • v.20 no.2
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    • pp.307-315
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    • 1995
  • The purpose of this study was to assess the efficacy of several thermal therapies using ice pack, moist-hot pack and ultrasound, separately and concomitantly and to obtain the background information on the vascular changes after thermophysical therapies. The author had used 15 healthy subjects were examined and the subjects were divide into 5 groups : ice pack, moist-hot pack, ultrasound, ice pack and moist-hot pack, ice pack and ultrasound. Observation were made immediate before and 0,5,10,20,30,45,60,90 minutes after treatment. Thermography was performed in an Agema 870 thermovisio with 0.1$^{\circ}C$ difference of gradual temperature shift. The results were as follows : 1. Using ice pack only, the surface temperature of the masseter region was increased lapse of time, and most remarkably 90 minutes after the treatment. 2. Using moist-hot pack only, the surface temperature of the region was remarkably increased immediately after the treatment, but decreased lapse of time. 3. Using moist-hot pack with ice pack, the surface temperature of the face was remarkably increased immediately after the treatment, and decreased lapse of time, Hyperthermia was maintained for a longer time as compared with the group of moist-hot pack only. 4. Using ultrasound only, the surface temperature of the region was increased gradually, and most remarkably 30 minutes after the treatment, but decreased in the course of time. 5. Using ultrasound combined with ice pack, the surface temperature of the region was gradually decreased until 30 minutes after the treatment, and decrease to some extend at 45 minute. And then a gradual increase observed over the remaining period of the experiment. 6. Hyperthermia were maintained for a long time in the groups using ice pack combined with moist-hot pack and ultrasound as compared with the other groups. Our data suggest that ice pack can promote the efficacy of other thermal therapies.

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The Effects of the Application Time of Buprofezin 25% WP on the Density of the Brown Planthopper(Nilaparvata lugens Stal) (Buprofezin 25% WP의 처리시기와 벼멸구(Nilaparvata lugens Stal) 밀도억제효과)

  • 배윤환;이준호;현재선
    • Korean journal of applied entomology
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    • v.31 no.4
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    • pp.551-559
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    • 1992
  • These studies were conducted to investigate the biological effects of buprofezin 25% WP on the adult of the brown planthopper (BPH) and its control effects on the BPH population, when buprofezin was treated on different days after the introduction of the BPH adult to the potted rice. Also age structures of the BPH population at the time of buprofezin treatment were observed. The results were as follows: Buprofezin (7.0 g a.i./l0 a) could reduce the longevity and fecundity of the newly emerged female but did not affect the biology of older female, and it did not affect the biology of the male. The larval densities at the time of buprofezin treatment was reduced to nearly zero after treatment. The higher the residual effect and the proportion of larvae at the time of buprofezin treatment were, the higher its con¬trol effect on the BPH population was. In case of buprofezin 7.0 g a.i./l0a treatment, the time interval of treatment that could show the highest control effect was about 10 days (from 18 days after the adult introduction to the adult emergence days of next generation).

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