• Journal of Powder Materials
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• v.25 no.4
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• pp.340-345
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• 2018

Additive manufacturing by electron beam melting is an affordable process for fabricating near net shaped parts of titanium and its alloys. 3D additive-manufactured parts have various kinds of voids, lack of fusion, etc., and they may affect crack initiation and propagation. Post process is necessary to eliminate or minimize these defects. Hot isostatic pressing (HIP) is the main method, which is expensive. The objective of this paper is to achieve an optimum and simple post heat treatment process without the HIP process. Various post heat treatments are conducted for the 3D-printed Ti-6Al-4V specimen below and above the beta transus temperature ($996^{\circ}C$). The as-fabricated EBM Ti-6Al-4V alloy has an ${\alpha}^{\prime}$-martensite structure and transforms into the ${\alpha}+{\beta}$ duplex phase during the post heat treatment. The fatigue strength of the as-fabricated specimen is 400 MPa. The post heat treatment at $1000^{\circ}C/30min/AC$ increases the fatigue strength to 420 MPa. By post heat treatment, the interior pore size and the pore volume fraction are reduced and this can increase the fatigue limit.

• The Journal of Korean Physical Therapy
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• v.16 no.4
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• pp.226-234
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• 2004

The purpose of this study was to evaluate effects of neural mobilization on the grip strength. Subjects were consist of 28 people who had no disorder of upper extremity from 19 to 29 years of age(mean age: 21.86) during 7 day from March 22, 2004 to 30 day. All Subjects received Neural mobilization of upper extremity for 15 minutes during 7 days. Digital grip strength dynamometer was used to measure grip strength. All measurements of each patients were measured at pre-treatment and 7 days post-treatment. The results of this study were summarized as follows : 1. The grip strength wasn't significantly increased between pre-treatment and post-treatment at 1 days(p .05). 2. The grip strength was significantly increased between pre-treatment and post-treatment at 7 days(p .05). 3. The results of analyzed effects of neural mobilization on the grip strength between pre-treatment and post-treatment that wasn't significantly increased at 1days(p.05) but significantly increased at 7days(p .05).

• Journal of the Korean Society of Clothing and Textiles
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• v.36 no.12
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• pp.1310-1317
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• 2012

This study examines the possibilities to improve natural dyestuff's (Pinux$^{TM}$) dyeability and colorfastness for C/R (Cotton/Rayon (40/60)) and W/T (Wool/Tencel (10/90)) knitted fabrics in cationizing and smectiting for pre-treatment, simultaneous-treatment and post-treatment process sequences; as well as various other treatment methods. The sample dyeability showed the strongest K/S value in the order of smectite (S) < cationization + smectite (C+S) < cationization (C); however, the K/S value showed a low level in the simultaneoustreatment method of smectite. Colorfastness to washing improved in the order of C < C+S < S, and after the smectite post-treatment process, C/R improved from Grade 1 to Grade 4 and W/T improved from Grade 1-2 to Grade 4. Colorfastness to perspiration generally improved in the same order as the colorfastness to washing and after the smectite post-treatment process C/R, W/T sample's acidic and alkaline colorfastness to perspiration improved greatly. As for the colorfastness to rubbing, the addition of smectite in the simultaneous-treatment and post-treatment processes resulted in improved wet-colorfastness; however, smectite showed less effect on the colorfastness to light compared to other colorfastness ratings.

• Journal of Oriental Neuropsychiatry
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• v.32 no.3
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• pp.235-245
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• 2021

Objectives: To provide clinical evidence of pharmacopuncture treatment for post-stroke depression by reviewing randomized controlled trials on Traditional Chinese medicine pharmacopuncture for post-stroke depression. Methods: Randomized controlled trials on pharmacopuncture treatment for post-stroke depression were searched from the China National Knowledge Infrastructure (CNKI). Literature searches of English and Chinese databases were performed. Selected literature was assessed with the Jadad scale. Results: Twelve papers were selected from 20 studies. The following results were obtained: 1) Pharmacopuncture was used for post-stroke depression; 2) Dengzhan-Xixin was the most used injection medicine for post-stroke depression; 3) BaiHui (GV20) was the most used in pharmacopuncture treatment; 4) Based on the Hamilton Depression Rating Scale (HAMD), it was confirmed that all studies using pharmacopunture had significant efficacy. Conclusions: For the treatment of post-stroke depression, Dengzhans-Xixin was commonly used as an injectable medication. Additional research studies on pharmacopuncture including its practical use are needed.

• Journal of the Korean institute of surface engineering
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• v.48 no.6
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• pp.269-274
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• 2015

In this experiment, post-nitriding treatment was performed at $400^{\circ}C$ on AISI 316 stainless steel which was plasma carburized previously at $430^{\circ}C$ for 15 hours. Plasma nitriding was implemented on AISI 316 stainless steel at various gas compositions (25% $N_2$, 50% $N_2$ and 75% $N_2$) for 4 hours. Additionally, during post nitriding Ar gas was used with $H_2$ and $N_2$ to observe the improvement of surface properties. After treatment, the behavior of the hybrid layer was investigated by optical microscopy, X-ray diffraction, and micro-hardness testing. Potentiodynamic polarization test was also used to evaluate the corrosion resistance of the samples. Meanwhile, it was found that the surface hardness increased with increasing the nitrogen gas content. Also small percentage of Ar gas was introduced in the post nitriding process which improved the hardness of the hardened layer but reduced the corrosion resistance compared with the carburized sample. The experiment revealed that AISI 316L stainless steel showed better hardness and excellent corrosion resistance compared with the carburized sample, when 75% $N_2$ gas was used during the post nitriding treatment. Also addition of Ar gas during post nitriding treatment degraded the corrosion resistance of the sample compared with the carburized sample.

• Journal of Korean Neurosurgical Society
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• v.38 no.3
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• pp.211-214
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• 2005

Objective : Post-traumatic hydrocephalus is a complication of head injury and can present with several different clinical symptoms. However, the developing factors of post-traumatic hydrocephalus and treatment are still not well known. The authors design the study to focus on incidence, causing diseases and treatment of post-traumatic hydrocephalus. Methods : The 789patients of traumatic head injury followed by admission treatment over 7days from Jan. 1997 to Dec. 2001, were divided shunt group and shunt free group. We analyzed age, sex, causing diseases, developing time of hydrocephalus and effects of shunt operation in post-traumatic hydrocephalus. Results : The incidence of post-traumatic hydrocephalus for requiring shunt was 9.2% [64cases]. Chronic hydrocephalus which developed after 14days of injury was higher incidence [51cases]. We found following variables were significantly related to shunt-dependent hydrocephalus : low GCS score at admission, initial CT finding of traumatic subarachnoid hemorrhage and intracerebral hemorrhage [including intraventricular hemorrhage]. The effect of shunt operation was not related with the spinal pressure, but had statistically significant correlation with the response of lumbar drainage. Conclusion : We conclude that development of hydrocephalus after head trauma is related to low GCS score, intracerebral hemorrhage [including intraventricular hemorrhage] and subarachnoid hemorrhage. The effect of preoperative lumbar drainage has a significant role in predicting the result of shunt operation in patient with post-traumatic hydrocephalus.

• Journal of Korean Medicine Rehabilitation
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• v.28 no.1
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• pp.145-152
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• 2018

Post-stroke spasticity is a common complication that can be deleterious to the daily living function and quality of life of stroke survivor. This case report was conducted to introduce the use of miniscalpel-acupuncture as a novel method for the treatment of post-stroke spasticiy in three patients with chronic stroke. Patients received miniscalpel-acpuncuture treatment for 4~7 session. The flexor digitorum brevis, pronator teres, pronator quadratus, brachioradialis, tibialis posterior, gastrocnemius on the affected side were needled. The main outcome were the Modified Ashworth Scale (MAS) muscle spasticity score and the range of motion. The evaluation indices were measured after the initiation of treatment and after treatment. After miniscalpel-acupuncture session, three patients improved as indicated in the MAS grade and range of motion. This retrospective case report presents miniscalpel-acupuncture as a potentially effective approach in Korean medicine rehabilitation treatment of post-stroke spasticity. Further research is needed to confirm these findings.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1999.11a
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• pp.566-569
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• 1999

The blue emitting BAM Phosphor Particles with various compositions were Prepared by the spray Pyrolysis. The effect of composition on the morphology of BAM particles was Investigated. In the case of BaMgAl$_{10}$ /O$_{22}$ : Eu$^{2+}$, the morphology of particles with sphericity and non-aggregation characteristics disappeared after post-treatment at 1400 $^{\circ}C$ for 3 hrs. On the other hand, the ocher composition particles except BaMgAl$_{10}$ /O$_{22}$ : Eu$^{2+}$ maintained their original morphology after post-treatment, even if the particles were prepared at low temperatures in the spray pryrolysis. The BAM particles with MgAl$_{2}$/O$_4$as intermediate material at low post-treatment temperature had high thermal stability and maintained sphericity of particles after post-treatment. All the samples had main omission peak at 450 nm, which corresponds to blue emission. The optimum post-treatment temperature of BAM:Eu$^{2+}$ particles for the maximum PL(photoluminescence) intensity in the spray pylolysis was 1200 $^{\circ}C$ because of high crystallinity, Phase-Purity, and good morphology.ology.

• The Journal of Internal Korean Medicine
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• v.44 no.5
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• pp.837-845
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• 2023

The purpose of this study is to investigate the efficacy of using Korean medicine treatment with post-concussion syndrome. We primarily treated the patient's post-concussion syndrome during hospitalization (22.04-22.11.11) with Korean medicine treatments (herbal medicine, acupuncture, and Chuna therapy). The KHIT-6 and Numeric Rating Scale were used to assess symptom (headache, dizziness, and nausea) changes. Following treatment, the patient's KHIT-6 and Numeric Rating Scale scores decreased. This study suggests that Korean medicine may be effective in the treatment of post-concussion syndrome.

• Journal of Sasang Constitutional Medicine
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• v.35 no.4
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• pp.105-115
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• 2023

Objectives Post-herpetic neuralgia(PHN) is one of the common complications in patients diagnosed with herpes zoster. The purpose of this case study is to suggest the effect of Galgunhaegui-tang and korean medicine treatment for post-herpetic neuralgia patient. Methods A 62-year-old Herpes Zoster patient suffered from rash with post-herpectic neuralgia was identified as Taeeumin Gansuyolriyolbyong. The patient's chief complaint was assessed by counting the number of oral analgesics taken and using Visual Analog Scale(VAS) score. The patient was treated with Galgunhaegui-tang and Korean medicine treatment. Results After 9 days of admission treatment including Galgunhaegui-tang, VAS of PHN was decreased from 7.5 to 4 and the number of taking oral analgesic was decreased from 2 to 1. Conclusions This case study indicates that Galgunhaegui-tang and Korean medicine treatment may improve the pain of PHN.