Kim, Ho Chul;Jung, Wonsik;Lee, Kwonhee;Nam, Ki Chang
Journal of the Korea Academia-Industrial cooperation Society
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제16권6호
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pp.4021-4030
/
2015
Pulse wave is the physiological responses through the autonomic nervous system such as ECG. It is relatively convenient because it can measure the signal just by applying a sensor on a finger. So, it can be usefully employed in the field of U-Healthcare. The objects of this study are acquiring the PPG (Photoplethysmography) one of the way of measuring the pulse waves in non-invasive way using the CMOS image sensor on a smartphone camera, developing the portable system judging stressful or not, and confirming the applicability in the field of u-Healthcare. PPG was acquired by using image data from smartphone camera without separate sensors and analyzed. Also, with that image signal data, HRV (Heart Rate Variability) and stress index were offered users by just using smartphone without separate host equipment. In addition, the reliability and accuracy of acquired data were improved by developing additional hardware device. From these experiments, we can confirm that measuring heart rate through the PPG, and the stress index for analysis the stress degree using the image of a smartphone camera are possible. In this study, we used a smartphone camera, not commercialized product or standardized sensor, so it has low resolution than those of using commercialized external sensor. However, despite this disadvantage, it can be usefully employed as the u-Healthcare device because it can obtain the promising data by developing additional external device for improvement reliability of result and optimization algorithm.
Lauvahutanon, Sasipin;Shiozawa, Maho;Takahashi, Hidekazu;Iwasaki, Naohiko;Oki, Meiko;Finger, Werner J.;Arksornnukit, Mansuang
Restorative Dentistry and Endodontics
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제42권1호
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pp.9-18
/
2017
Objectives: This study evaluated color differences (${\Delta}Es$) and translucency parameter changes (${\Delta}TPs$) of various computer-aided design/computer-aided manufacturing (CAD/CAM) blocks after immersion in coffee. Materials and Methods: Eight CAD/CAM blocks and four restorative composite resins were evaluated. The CIE $L^{\ast}a^{\ast}b^{\ast}$ values of 2.0 mm thick disk-shaped specimens were measured using the spectrophotometer on white and black backgrounds (n = 6). The ${\Delta}Es$ and ${\Delta}TPs$ of one day, one week, and one month immersion in coffee or water were calculated. The values of each material were analyzed by two-way ANOVA and Tukey's multiple comparisons (${\alpha}=0.05$). The ${\Delta}Es$ after prophylaxis paste polishing of 1 month coffee immersion specimens, water sorption and solubility were also evaluated. Results: After one month in coffee, ${\Delta}Es$ of CAD/CAM composite resin blocks and restorative composites ranged from 1.6 to 3.7 and from 2.1 to 7.9, respectively, and ${\Delta}TPs$ decreased. The ANOVA of ${\Delta}Es$ and ${\Delta}TPs$ revealed significant differences in two main factors, immersion periods and media, and their interaction except for ${\Delta}Es$ of TEL (Telio CAD, Ivoclar Vivadent). The ${\Delta}Es$ significantly decreased after prophylaxis polishing except GRA (Gradia Block, GC). There was no significant correlation between ${\Delta}Es$ and water sorption or solubility in water. Conclusions: The ${\Delta}Es$ of CAD/CAM blocks after immersion in coffee varied among products and were comparable to those of restorative composite resins. The discoloration of CAD/CAM composite resin blocks could be effectively removed with prophylaxis paste polishing, while that of some restorative composites could not be removed.
Purpose: Many options are available for the incision and pocket selection in breast augmentation. Each method has its advantages and disadvantages. To leave an invisible operation scar and to achieve easier pocket dissection by the central location of the incision on the breast, we made a transareolar-perinipple incision. To overcome the disadvantages of the transareolar incision, originally advocated by Pitanguy in 1973, we modified the direction of incision line and dissection plane. Methods: To avoid the injury of 4th intercostal nerve responsible for nipple sensation, we made perinipple incision on the medial side of the nipple instead of trans-nipple incision and made the transareolar incision as 11-5 o'clock on the left side and 1-7 o'clock on the right side instead of 3-9 o'clock on both sides. To avoid the possible infection and breast feeding problem caused by the injury to the lactiferous duct, and the possible implant hernia caused by the incisions lying on a same plane of pocket dissection, we made a subcutaneous dissection just above the breast tissue medially down to the bottom of breast tissue and made a subglandular or subfascial pocket, which may avoid the injury of lactiferous duct and create different planes for skin incision and pocket dissection. Other advantages of the transareolar-perinipple incision include easier pocket dissection, less chance of hematoma, and as a result less postoperative pain because of the central location of the approach which allow finger dissection and meticulous bleeding control with direct vision, without any specialized instrument such as an endoscope or long mammary dissectors. As for pocket selection, we made dual pockets. We prefer subglandular or subfascial pocket. Also, we made a subpectoral pocket in the upper 1/4 of the pocket to add more volume on the upper part of the augmented breast, which can make aesthetically more desirable breasts in thin Asian women with small breasts. Possible disadvantages of our method are subclinical infection and scar widening, which could be overcome by meticulous operation techniques, antibiotic therapy, and intradermal tattooing. Results: From September, 2003 to August, 2005, 12 patients underwent breast augmentation using round smooth surface saline implants by our method. During the mean follow-up period of 13 months, there were no complications such as infection, hematoma, capsular contracture, and sensory change of nipple, and results were satisfactory. Conclusion: We suggest breast augmentation via transareolar-perinipple incision and dual pockets(subpectoral-subglandular or subfascial) as a valuable method in thin oriental women with small breasts.
Lee, Jang Hyun;Jang, Soo Won;Kim, Cheol Hann;Ahn, Hee Chang;Choi, Matthew Seung Suk
Archives of Plastic Surgery
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제36권5호
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pp.605-610
/
2009
Purpose: Substantial tissue necrosis after snake bites requiring coverage with flap surgery is extremely rare. In this article, we report 7 cases of soft tissue defects in the upper and the lower extremities caused by snake bites, which needed to be covered with flaps. Among the vast mass of publications on snake bites there has been no report that focuses on flap coverage of soft tissue defects due to snake bite sequelae. Methods: Seven cases of soft tissue defects with tendon, ligament, or bone exposure after snake bites were included. All patients were males without comorbidities, the average age was 35 years. All of them required coverage with a flap. In 6 cases, the defect was localized on the upper extremity, in one case the lesion was on the lower extremity. Local flaps were used in 6 cases, one case was covered with a free flap. The surgical procedures included one kite flap, one cross finger flap and digital nerve reconstruction with a sural nerve graft, one reverse proximal phalanx island flap, one groin flap, one adipofascial flap, one neurovascular island flap, and one anterolateral thigh free flap. The average interval from injury to flap surgery was 23.7 days. Results: All flaps survived without complication. All patients regained a good range of motion in the affected extremity. Donor site morbidities were not observed. The case with digital nerve reconstruction recovered a static two point discrimination of 7 mm. The patient with foot reconstruction can wear normal shoes without a debulking procedure. Conclusion: The majority of soft tissue affection after snake bites can be treated conservatively. Some severe cases, however, may require the coverage with flap surgery after radical debridement, especially, if there is exposure of tendon, bone or neurovascular structures. There is no doubt that definite coverage should be performed as soon as possible. But we also want to point out that this principle must not lead to a premature coverage. If the surgeon is not certain that the wound is free of necrotic tissue or remnants of venom, it is better to take enough time to get a proper wound before flap surgery in order to obtain a good functional and cosmetic result.
The purpose of this study was to evaluate effects of lumbar stabilizing exercise on the functional recovery and the range of motion of low back pain patients. The subjects were consisted of sixty patients who had non specific chronic low back pain(32 females. 28 males; mean aged 37.3) from 19 to 65 years of age(mean age : 37.3). All subjects randomly assigned to the lumbar stabilizing exercise group, the modalities treatment group, the manual treatment group. Lumbar stabilizing exercise group received manual treatment with lumbar stabilizing exercise for 30minutes, modalities treatment group received hot pack used thermal therapy for 20minutes and ICT used electrical therapy for 20minutes and US or MWD used deep thermal therapy for 15minutes, manual treatment group received modalities treatment with therapeutic massage for 10minutes and joint mobilization or manipulation for 10minutes per day and three times a week during 4 weeks period. The Multilevel Roland-Morris Disability Questionnaire(MR-MDQ) was used to measure functional disability level. Visual Analogue Scale(VAS) was used to measure subjective pain level. Remodified Schober test(RST) was used to measure forward flexion range of motion of lumbar segment. Finger-to-Floor test(F-T-FT) was used to measure forward flexion range of motion of full spine of low back pain patients. All measurements of each patients were measured at pre-treatment and 4 week post-treatment. The results of this study were summarized as follows : 1. The MR-MDQ of lumbar stabilizing exercise group, modalities treatment group, and manual treatment group was significantly reduced between pre-treatment and post-treatment(p<.05). 2. The VAS of lumbar stabilizing exercise group, modalities treatment group, and manual treatment group was significantly reduced between pre-treatment and post-treatment(p<.05). 3. The RST of lumbar stabilizing exercise group, modalities treatment group, and manual treatment group was significantly reduced between pre-treatment and post-treatment(p<.05). 4. The F-T-FT of lumbar stabilizing exercise group, modalities treatment group, and manual treatment group was significantly reduced between pre-treatment and post-treatment(p<.05). 5. The results of analyzed effects of MR-MDQ, RST, F-T-FT were significantly reduced (p<.05), but VAS wasn't significantly reduced(p>.05) between treatment type of lumbar stabilizing exercise group and modalities treatment group and manual treatment group according to pre-treatment and post-treatment. 6. The results of LSD post-hoc to find difference between treatment type of lumbar stabilizing exercise group and modalities treatment group and manual treatment group according to pre-treatment and post-treatment that MR-MDQ was significantly reduced stabilizing exercise group than modalities treatment group(p<.05), and VAS wasn't significantly reduced all treatment group(p>.05), and RST was significantly reduced stabilizing exercise group than modalities treatment group(p<.05), and F-T-FT was significantly reduced stabilizing exercise group than modalities treatment group and manual treatment group (p<.05).
Journal of Physiology & Pathology in Korean Medicine
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제20권6호
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pp.1431-1441
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2006
Following conclusions were drawn from the examination of the usage of semen persicae and fols carthami from the view of Hyungsang Medicine. Semen persicae is used to vitalize the blood flow and eliminate the blood stagnation of the whole body in ${\ulcorner}$Donguibogam${\lrcorner}$, and therefor it is used for the blood flow of the heptal meridian and sometimes the intestinal meridian. Flos carthami is applied to vitalize the blood flow, remove obstructions in meridians, eliminate the blood stagnations, and stop the pain in ${\ulcorner}$Donguibogam${\lrcorner}$, therefore used in such symptoms of blood flow of the heptal meridian as amenorrhea, spasm of muscles, and coldness of the genitals. Also is applied in those cases of exhaustion, perspiration, and in digestive remedies which belong to the symptoms of cardiac blood flow. And it is used for dryness of the skin in which case the blood should be developed and malaria for the elimination of the blood stagnation and production of new blood. The combination of semen persicae and flos carthami is applied to eliminate the blood stagnation and stimulate menstrual discharge in uterus, as well as in the cases of lumbago and stomachache due to blood stagnation, blood stasis, mass in the abdomen, and abdominal distention. This combination is also used for the eyes, ears, numbness, and paralysis of hands and feet for the purpose of making the flow of the meridian smooth, and for diabetes, dryness of the skin, malaria, anal itching and pain for the purpose of eliminating the mass and renewing the tissues. The combination is diversly used in the book of ${\ulcorner}$Special lectures on clinical cases${\lrcorner}$ for the aftereffects of traffic accident, constipation, diabetes, dryness of the skin, paralysis of hands and feet, numbness of finger of hand and foot, and especially used frequently with prescription of Yijintang and Samultang combined in the cases of numbness. The prescription is used in Hyungsang medicine when the uterus, the external appearance(axis), hands and feet, heart, and the stomach is not good for the vitalization of the flow of the 12 meridians. It was though difficult to find extinguishing differences between the two herbs in the clinical cases applied in the book of ${\ulcorner}$Special lectures on clinical cases${\lrcorner}$.
This study was performed to develop the molecular marker for sex determination of hare (Lepus coreanus) distributed in Korea which focused on sexual dimorphism between X and Y chromosomal homologous genes, zinc finger-X (ZFX) and -Y (ZFY). The intron 7 regions of ZFX and ZFY genes exhibited differential amplification patterns between male and female hares. The lengths of intron 7 region of ZFX and ZFY genes were 538 and 233-bp, respectively. Especially, the ZFX intron 7 contained a repetitive sequence identified as member of RNA-mediated transposable elements which was similar to CSINE2 commonly found in the rabbit genome. However, it was not present in intron 7 of ZFY gene. The molecular sex typing by polymerase chain reaction (PCR) was also carried out to determine the sex of hare based on difference in lengths between the intron 7 regions of ZFX and ZFY genes. All DNA samples tested had common band amplified from ZFX. However, the male hare DNAs had two distinct bands which amplified from ZFX and ZFY genes, respectively. The results from ZFX-ZFY PCR sex typing were identical to those from phenotypic investigation and from amplification patterns using male-specific sex determining region Y (SRY) gene as well. Finally, this study suggested that the sexual dimorphism between intron 7 regions of ZFX and ZFY could be useful genetic marker to determine sex of hare.
Sohn, Eun Jeong;Shin, Min Jea;Kim, Dae Won;Ahn, Eun Hee;Jo, Hyo Sang;Kim, Duk-Soo;Cho, Sung-Woo;Han, Kyu Hyung;Park, Jinseu;Eum, Won Sik;Hwang, Hyun Sook;Choi, Soo Young
Molecules and Cells
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제37권3호
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pp.226-233
/
2014
Excessive reactive oxygen species (ROS) generated from abnormal cellular process lead to various human diseases such as inflammation, ischemia, and Parkinson's disease (PD). Sensitive to apoptosis gene (SAG), a RING-FINGER protein, has anti-apoptotic activity and anti-oxidant activity. In this study, we investigate whether Tat-SAG, fused with a Tat domain, could protect SH-SY5Y neuroblastoma cells against 1-methyl-4-phenylpyridinium ($MPP^+$) and dopaminergic (DA) neurons in the substantia nigra (SN) against 1-methyl-4-phenyl-1,2,3,6-tetra-hydropyridine (MPTP) toxicity. Western blot and immunohistochemical analysis showed that, unlike SAG, Tat-SAG transduced efficiently into SH-SY5Y cells and into the brain, respectively. Tat-SAG remarkably suppressed ROS generation, DNA damage, and the progression of apoptosis, caused by $MPP^+$ in SH-SY5Y cells. Also, immunohistochemical data using a tyrosine hydroxylase antibody and cresyl violet staining demonstrated that Tat-SAG obviously protected DA neurons in the SN against MPTP toxicity in a PD mouse model. Tat-SAG-treated mice showed significant enhanced motor activities, compared to SAG- or Tat-treated mice. Therefore, our results suggest that Tat-SAG has potential as a therapeutic agent against ROS-related diseases such as PD.
Journal of the Korea Academia-Industrial cooperation Society
/
제13권8호
/
pp.3552-3560
/
2012
This study was conducted to find out the complaint rate of musculo-skeletal disorder and its related factors from male manufacturing workers at a nonferrous manufacturing industry. As for the research subjects, 302 workers selected from a nonferrous manufacturer located in Daejeon City, and as for the collection of data, a standardized anonymous questionnaire survey were conducted from May 1, 2011 to June 30, 2011. As a results, the complaint rate of musculo-skeletal disorders by each body part, the symptom of shoulders was 42.7%, the highest rate, followed by the waist, 36.8%, the neck and the hand/wrist/finger, 30.5% respectively, the leg and foot, 30.1% and arm/elbow, 20.9%. The complaint rate of musculo-skeletal disorder for the sociodemographic characteristics was significantly high as survey participants' age and BMI were low and in the group having low subjective health condition. The complaint rate of musculo-skeletal disorder for the health-related behavior characteristics was significantly high in the group having been absent from work due for diseases, in the group having received outpatient services, in the group having been hospitalized for treatment, in the group not having a regular exercise and in the group having insufficient sleeping hours. Finally, the complaint rate of musculo-skeletal disorder for the job-related characteristics was significantly high in the group suffering from the physical burden of their work, in the group working while bending at the waist and in the group carrying out repetitive tasks.
Journal of the Korea Institute of Information and Communication Engineering
/
제11권10호
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pp.1916-1923
/
2007
We have studied to obtain the SAW filter for the passband was formed on the Langasite substrate and was evaporated by Aluminum-Copper alloy and thin we performed computer-simulated by simulator. We cm fabricate that the block weighted type IDT as an input transducer of the filter and the withdrawal weighted type IDT as an output transducer of the filter from the results of our computer-simulation. Also, we have performed to obtain the properly design conditions about phase shift of the SAW filter for WCDMA. We have employed that the number of pairs of the input and output IDT are 50 pairs and the thickness and the width of reflector are $5000\;{\AA}$ and $3.6{\mu}m$ respectively. And we have employed that the distances from the hot electrode to the reflector are $2.0{\mu}m$, $2.4{\mu}m$ and the distance from the hot electrode to the ground is $1.5{\mu}m$ respectively. Frequency response of the fabricated SAW filter has the property that the center frequency is about 190MHz and bandwidth at the 3dB is probably 7,8MHz. And we could obtain that return loss is less then -18dB, ripple characteristics is probably 3dB and triple transit echo is less then -25dB after when we have matched impedance.
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