• Journal of Welding and Joining
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• v.11 no.2
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• pp.53-61
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• 1993

One of the most interesting and promising steel groups considered for the rocket motor case, aircraft and aerospace component is the maraging(martensitic plus aging) nickel steel, developed by International Nickel Company in 1960. This material attains a very high strength with good fracture toughness by simple heat treatments which do not involve a quenching. Full strength can be obtained by "maraging" at 480.deg. for 3 hours for the 18% Ni maraging steel. The effect of heat treatments was considered on the residual stress field of 18% Ni maraging steel weldments. In experiments, various heat treatments such as stress relieve heat treatment, aging and solution heat treatment were carried out of the GTA weldments and the residual stresses were measured by using the hole drilling method. Whereas the conventional pattern of residual stress shows the stresses to be maximum along the weld centerline with tensile stress extending into the heat affected zone, the pattern in maraging steels shows the centerline stress to be compressive. After welding, a series of aging, solution heat treatment and solution heat treatment plus aging treatment were carried out and the residual stresses were measured to reveal that these heat treatments almost completely remove the welding residual stresses.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2010.06a
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• pp.34-34
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• 2010

We report on the influence of heat treatments on the electrical properties of ZnO films grown by molecular-beam epitaxy. We note that the electrical resistance of the ZnO films is significantly changed by the heat treatments: the electrical resistance increases with the increase of ambient temperature, but above a critical temperature the resistance decreases with the increase of temperature, irrespective of ambient gases. On the other hand, it is found that the large amount of photocurrent is generated in the ZnO films, exposed to white sources: the photocurrent decreases with the increase of the obtained resistance, and the current increases with the decrease of the resistance. Also, it is shown that the X-ray diffraction linewidth of the ZnO films is significantly decreased by the heat treatments. These indicate that the increase/decrease of the electrical resistance is ascribed to the annihilation/formation of the residual donor-type defects in the ZnO films by the heat treatments. It is suggested that the increase of the electrical resistance is due to the annihilation of Zni-complex defects, while the decrease of the electrical resistance is due to the formation of VO-complex defects.

• Journal of Ecology and Environment
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• v.29 no.2
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• pp.151-155
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• 2006

Root nodule biomass, and seedling biomass and growth were examined for 2-year-old Robinia pseudoacacia and Amorpha fruticosa seedlings following fertilization treatments. Organic fertilizer, solid combination fertilizer, and organic fertilizer plus solid combination fertilizer were used for the study. Root nodule biomass (g/plant) ranged from 3.00 to 7.06 for R. pseudoacacia and varied from 1.52 to 2.32 for A. fruticosa, respectively. In all treatments, root nodule biomass of R. pseudoacacia was significantly higher than those of A. fruticosa. Fertilization significantly increased root nodule biomass for only R. pseudoacacia, however, there were no significant differences in root nodule biomass among fertilization treatments. Root nodule biomass was not influenced by soil nitrogen (N) and phosphorous (P) concentrations following fertilization treatments. Seedling biomass (components and total) and growth (diameter at root collar and height) were strongly correlated with root nodule biomass for the two N fixing tree species.

• The Journal of Pediatrics of Korean Medicine
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• v.18 no.2
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• pp.93-106
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• 2004

Objective : The aim of this study is to investigate the effects of oriental medical treatments for neonates in the Postpartum care center. Methods : This clinical study was carried out with the 186 neonates who admitted to the Postpartum Care Center of Conmaul Oriental Medicine Hospital, from November, 2003 to May, 2004. The data of sex, delivery method, gestation age, birthweight, symptoms, herbal prescription, improved condition and other treatments was collected via the medical charts. Results : Among 186 newborn babies, 48 cases had diarrhea. We used Gwakhyangjeonggi-san for 31 cases, Bulwhangumjeongnggi-san for 5 cases, compound prescription of the two for 8 cases. The effect of treatment was excellent for 25 cases, good for 11 cases, not good for 8 cases. In fever, there were 39 cases. We used Gwakhyangjeonggi-san and venesection of blood for 17 cases, only venesection of blood for 20 cases, and only Gwakhyangjeongg-isan for 3 cases. The effect of treatment was excellent for 37 cases, good for 3 cases. In cold, there were 4 cases. We used Samsoum for 1 case, Socheongryong-tang for 3 cases. The effect of treatment was excellent for 2 cases, good for 1 case, not good for 1 case. Conclusions : This study shows oriental medical treatments like acupucture, herbal medicine, and venesection of blood for neonates have significant effects. we will need further prospective studies about effects of these oriental medical treatments.

• Asian-Australasian Journal of Animal Sciences
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• v.19 no.10
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• pp.1484-1489
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• 2006

This study was carried out to investigate the effect of high pressure and the addition of non-meat proteins on the physico-chemical and binding properties of restructured pork. Pressurizations were carried out at up to 200 MPa and non-meat proteins used as a binder were isolated soy protein (ISP), sodium caseinate (SC), whey protein concentrate (WPC) and egg white powder (EWP). The pH values of all treatments were affected by the level of pressure. $L^*$-value of all treatments increased significantly (p<0.05), while both $a^*$-value and $b^*$-value of all treatments showed a significant decrease (p<0.05) with increasing pressure level. Binders could contribute only additive effects on both pH and color of the treatments. It was found that high pressure improved the water binding capacities and binding strength of the treatments. Binders also improved the binding strength of restructured pork. However, SC and WPC had no effect on water binding properties under high pressure. These results indicate that the application of high pressure had more significant effect on restructuring meat than binders.

• The Journal of Korean Obstetrics and Gynecology
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• v.28 no.2
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• pp.174-182
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• 2015

Objectives : AMH (Anti-Müllerian Hormone) is considered a sensitive marker of ovarian reserve, and it tends to be included among basic fertility tests. This paper is to report four pregnancies which were achieved by subfertile women with low AMH level after Korean medical treatments. Methods : Four cases of pregnancy by subfertile women, aged 34 to 37, with low AMH level (0.04 to 0.76 ng/mL), after Korean medical treatments between July 2012 and May 2015, were analysed. The patients were diagnosed as Kidney deficiency (腎虛), Blood extravasation (瘀血) and/or Liver Qi stagnation (肝氣 鬱結). Herbal medicine, acupuncture, pharmacopuncture and moxibustion treatments were applied. Results : The four subfertile women with low AMH level achieved pregnancy after Korean medical treatments. Conclusions : The case report suggests that Korean medical treatment can be an effective option for subfertile women with low AMH level before Assisted Reproductive Technology.

• The Journal of Internal Korean Medicine
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• v.37 no.5
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• pp.876-884
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• 2016

Objective: To report a case of a patient with a psychosomatic disorder who complained of hyperventilation and was treated with oriental medical treatments and emotional freedom techniques (EFTs). Methods: The patient was diagnosed as having a psychosomatic disorder through an interview and several psychological tests, such as the house-tree-person (HTP) and the person in the rain (PITR) tests. We treated the patient with oriental medical treatments that included herbal medications, western medications, moxibustion, cupping, and EFT. Results: After the treatments, the clinical symptoms of the patient were improved. Conclusions: Oriental medical treatments and EFT may be effective treatments for psychosomatic disorders.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2000.05a
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• pp.833-836
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• 2000

The mechanical and thermal load. and thermal softening which is happened by the high temperature of die, in hot and warm forging, cause wear. heat checking and plastic deformation, etc. This study is for the effects of solid lubricants and surface treatments for warm forging die Because cooling effect and low friction are essential to the long lift of dies. optimal surface treatments and lubricants are very important to hot and warm forging Process. The heat that is generated by repeated forging processes. and its transfer are important factors to affect die life. The main factors, which affect die hardness and heat transfer, are surface treatments and lubricants, which are related to thermal diffusion coefficient and heat transfer coefficient, etc. For verifying these. experiments art performed for diffusion coefficient and heat transfer coefficient in various conditions - different initial billet temperatures and different loads. Carbonitriding and ionitriding are used as surface treatments. and oil- base and water-base graphite lubrirants are used. The effects of lubricant and surface treatment for warm forging die lift are explained by their thermal characteristics.

• International Journal of Concrete Structures and Materials
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• v.8 no.3
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• pp.185-199
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• 2014

As the national transportation infrastructure ages and deteriorates, many existing bridges require frequent and costly maintenance and repairs. The objective of this work was to synthesize new and existing types of beam end coatings and treatments that have been proven to extend the life of new and existing concrete and steel bridge beams. A comprehensive literature review, along with online surveys and phone interviews of State department of transportations (DOTs) and coating manufacturers was conducted to gather information about existing and recently developed technologies. The study revealed that while many promising coatings and treatments are offered on the market, there is a lack of readily available laboratory results that would enable direct comparison of the available methods. This finding applies in terms of the coatings' durability and the potential for extending the service life of existing bridges. Most of the interviewed State DOTs' personnel assessed the products listed in respective DOT's Qualified Products Lists as performing 'well'. However, there was significant variability between states in the type of the products used. Among the agencies contacted, none was able to suggest the most promising or advanced products, either for concrete or steel bridge beam end treatments. This suggests that comprehensive laboratory evaluation would be necessary for selecting the best available beam end treatments and coatings.

• Journal of Environmental Science International
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• v.23 no.1
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• pp.153-156
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• 2014

This study was conducted to evaluate the effects of sea urchin shell powder on nitrogen characteristics in poultry litter by assigning ninety 1-d-old male broiler chicks (Arbor Acres) to one of 3 treatments (control, 1% sea urchin shell powder, and 1% feed additives) in 3 replicates of 10 birds each. For all treatments, the overall dry matter contents were decreased (P < 0.05) as time increased, except for at 1 week. When compared with controls, the dietary sea urchin shell powder and feed additives for 0 and 3 weeks did influence their TN contents, but not for 1, 2 and 4 weeks. The treatments with sea urchin shell powder and feed additives had a significant (P < 0.05) influence on $NH_3$-N in poultry litter compared with controls. However, at 4 weeks, no marked differences were observed in $NH_3$-N contents among treatments. Treatments with 1% sea urchin shell powder might enhance the value of poultry litter as N fertilizer.