• Preventive Nutrition and Food Science
• /
• v.12 no.1
• /
• pp.40-45
• /
• 2007

The effects of drying methods on the physicochemical properties of chaga (Inonotus obliquus) mushroom powder were investigated. Scanning electron micrograph revealed that freeze drying produced smaller particle- sized samples which in turn resulted in higher porosity than did vacuum and hot-air drying. Samples prepared by freeze drying showed a significantly higher L*-value as compared with those prepared by hot-air drying and vacuum drying (p<0.05). The lightness (L*-value) significantly decreased with increasing relative humidity and storage temperature regardless of drying method (p<0.05). The yellowness (b*-value) increased significantly with increasing relative humidity (p<0.05). Browning index was significantly lower in samples prepared by freeze drying (p<0.05) but not significantly different between samples dried by hot-air and vacuum drying. Freeze dried sample exhibited a significantly higher degree of rehydration than other samples (p<0.05) probably due to the small particle size. Water solubility of the freeze dried sample was higher than those of the other methods while swelling ratio of the same sample appeared to be lower than those of others. Freeze dried chaga mushroom powder contained significantly lower amount of total phenolics and total sugar as compared to other samples (p<0.05).

• Magazine of the Korean Society of Agricultural Engineers
• /
• v.36 no.3
• /
• pp.74-83
• /
• 1994

A series of isotropic consolidation tests, undrained and drained triaxial compression tests was carried out to investigate the physical characteristics and behaviours of marine silty sands collected from the western coast of Korea. This study also included a theoretical development of the constitutive equation to evaluate stress-strain relationship and volume change of silty sands. The results and main conclusions of the study are summarized as follows; 1. Isotropic compression and swelling index are linearly decreased with an increase in relative density. 2. Both undrained shear strengh and elastic modulus are increased with an increase in relative density and confining pressure. 3. Internal friction angles obtained from drained and undrained compression tests of the soils are proportional to relative density. 4. The phenomenon of dilatancy of each sample is less profound when confining stress is increased but more profound when relative density is increased. 5. The slope of critical state lines is 1.78 for Saemangum, 1.70 for Siewha and 1.26 for Sukmoon sands. 6. In this study, Drucker-Praper type criterion is used and hardening function of Cap model is modified by hyperbolic fuction. This will improve a lack of physical meaning of hardening parameters in conventional Cap model. 7. A newly developed constitutive equation to the forementioned silty sands and checked its applicability. This is in good agreement with the measured data.

• Polymer(Korea)
• /
• v.28 no.4
• /
• pp.352-359
• /
• 2004

Membrane technology was used for the optical resolution of the various racemic compounds such as tryptophan, tyrosine and phenylalanine, using enantioselective membranes prepared from sodium alginate (SA) and glutaraldehyde as a membrane material and crosslinking agent, respectively, The chemical structure of the membranes was characterized with FT-IR spectrophotometry and 3D molecular structure modeling study was done to figure out the optical resolution mechanism through the membrane. Effects of degree of crosslinking, feed concentration, operating pressure and different kinds of feed solution on the membrane performances were studied. As results, it was found that with increasing degree of crosslinking and membrane thickness, and decrease in the concentration of the feed solution and smaller size of solutes, the enantinselectivity of the membrane was improved. When the sodium alginate membranes with 80% of swelling index and 79${\mu}{\textrm}{m}$ of thickness were used, 77% of enantiomeric excess was obtained.

• Journal of Korean Medicine Rehabilitation
• /
• v.32 no.3
• /
• pp.161-169
• /
• 2022

A 50-year-old Korean male tour guide without any medical or family history complained of left knee pain. After receiving umbilical cord blood injection treatment, the pain gradually worsened. After being diagnosed with septic arthritis in the left knee, arthroscopic lavage, debridement, antibiotic treatment, and routine rehabilitation therapy were performed, but the symptoms persisted. In the hospital, acupuncture, pharmacopuncture, acupotomy, Chuna manual therapy, and cupping therapy were performed in addition to the usual treatment for 59 days. To evaluate the patient's improvement, the numeric rating scale, EuroQol 5-dimension, pain disability index, and Lysholm knee scoring system were used. After treatment, the symptoms improved in all assessment tools, swelling, and range of motion of the joint. Through this study, it was found that complex Korean medical therapies may be effective for postoperative ankylosis in septic arthritis of the knee, and further studies are needed to clarify the therapeutic effect.

• Geomechanics and Engineering
• /
• v.33 no.6
• /
• pp.625-633
• /
• 2023

The volume changes associated with moisture or suction variation in expansive soils are of geotechnical and geoenvironmental design concern. These changes can impact the performance of infrastructure projects and lightweight structures. Assessment of unsaturated function for these materials leads to better interpretation and understanding, as well as providing accurate and economic design. In this study, expansive soils from different regions of Saudi Arabia were studied for their basic properties including gradation, plasticity and shrinkage, swelling, and consolidation characteristics. The unsaturated soil functions of saturated water content, air-entry values, and residual states were determined by conducting the tests for the entire soil water characteristic curves (SWCC) using different techniques. An attempt has been made to provide a prediction model for unsaturated properties based on the basic properties of these soils. Once the profile of SWCC has been predicted the time and cost for many tests can be saved. These predictions can be utilized in practice for the application of unsaturated soil mechanics on geotechnical and geoenvironmental projects.

• Journal of Korean Medicine Rehabilitation
• /
• v.33 no.3
• /
• pp.79-96
• /
• 2023

Objectives This study was designed to review the effect of Jakyakkamchobuja-tang on rat model with rheumatoid arthritis. Methods We used seven databases (PubMed, EMBASE, Cochrane CENTRAL, China National Knowledge Infrastructure, Oriental Medicine Advanced Searching Integrated System, Korean studies Information Service System, National Digital Science Library) from their inception to May 2023 without language restrictions. Systematic Review Centre for Laboratory Animal Experimentation's tool was used to evaluate the risk of bias. RevMan software (V5.4) was used for the meta-analysis. Results Five studies were selected following our inclusion criteria. The arthritis index decreased significantly (standardized mean difference=-2.06; 95% confidence interval=-3.07 to -1.04; p<0.0001) in Jakyakkamchobuja-tang group. Also, serum cytokines in serum and paw swelling degree decreased in Jakyakkamchobuja-tang group. Conclusions Jakyakkamchobuja-tang may be effective in treating rheumatoid arthritis. Although there is a limitation that the design of drug dosage varies between papers, it can be expected to be applied as an alternative to Western medicine, and it is believed to contribute to the standardization of herbal treatment for rheumatoid arthritis.

• Journal of Acupuncture Research
• /
• v.41 no.2
• /
• pp.129-134
• /
• 2024

Knee osteoarthritis (KOA) is a prevalent degenerative joint disease causing significant pain and dysfunction. This case report presents the use of electromagnetic acupuncture utilizing a Whata 153 device generating a magnetic field to enhance acupuncture stimulation for the treatment of KOA. A 69-year-old female diagnosed with KOA experienced a reduction in pain (numerical rating scale score from 7 to 4), improved gait, and decreased stiffness and swelling after daily electromagnetic acupuncture treatments during hospitalization. In addition, the Korean Western Ontario and McMaster Universities Osteoarthritis Index scoreimproved from 20 to 14, and the patient rated her overall improvement as "significantly improved" on the patient's global impression of change scale. Although these findings suggest potential benefits of electromagnetic acupuncture for KOA, the case report design limits its generalizability. More controlled trials are warranted to confirm the efficacy and safety of electromagnetic acupuncture as a treatment of KOA.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
• /
• v.37 no.3
• /
• pp.73-83
• /
• 2024

Objectives : The purpose of this study is to report the case of contact dermatitis on the burn lesion treated with Korean medicine treatment including Bangpoongtongseongsan gagam, Jaeumganghwatang gagam and pharmacopuncture. Methods : A 28-year-old female patient had complaints of erythema, swelling, pruritus, exudate due to contact dermatitis caused by the band used to treat the left forearm burn lesion from February 10, 2024. The patient visited Dong-Eui Korean medicine university hospital on February 19, 2024, and we treated this patient with herbal medicine, pharmacopuncture, and western medicine. The effects of treatments were evaluated by photo comparision, visual analogue scale(VAS), dermatology life quality index(DLQI) and sleep disorder score. Results : After treatment, the patient's symptoms improved. VAS of pruritus was decreased from 9 to 0, DLQI was decreased 25 to 0 and sleep disorder score was decreased 7 to 0. Conclusions : The results suggest the Korean medicine treatment including herbal medicine and pharmacopuncture could be effective in treating patient with contact dermatitis.

• Korean Journal of Food Science and Technology
• /
• v.38 no.2
• /
• pp.273-278
• /
• 2006

Effects of dietary fat and tomato on immune functions were investigated using BALB/c mice. Sixty male BALB/c mice weighing 16-17g were divided into two dietary groups. Control group was fed experimental chow (AIN-76 purified diet) supplemented with saturated fat (beef tallow) and unsaturated fat (safflower oil) at 5% level (weight basis), while treatment group was fed chow added with 0.5% (dry matter basis) of tomato (moisture content 95%) for 10 weeks. Organ weights, delayed-type hypersensitivity test, plaque-forming cell test, agglutination test, differential white cell count, and histological examination were performed at 4th, 7th, and 10th week after dietary treatment. Weight of spleen and spleen index of tomato group increased with increasing experimental period. Thymus index of tomato group was significantly higher than that of control group at 7 and 10 weeks (p<0.05). In delayed hypersensitivity test at 4th, 7th, and 10th week after dietary treatment, tomato group showed more significant increase in footpad swelling reaction 24 hr after challenge than control group (p<0.05). In plaque-forming cell test, tomato group fed 7 weeks increased more significantly than control group, while no significant difference was found between two groups at 10 weeks. Agglutination test decreased with increasing experimental period; tomato group at 10 weeks was higher than control group in antibody response to SRBC. In tomato group, Iympocyte percentage was slightly higher than that of control group, and spleen tissue showed active immune reaction caused by severe proliferation of white pulp.

• Journal of Soil and Groundwater Environment
• /
• v.16 no.4
• /
• pp.1-9
• /
• 2011

Bentonite has been generally used as vertical cutoff barrier material and reported to have several problems regarding its low workability, drying shrinkage cracking by particle cohesion, and ineffective waterproof ability under sea water condition. In this study, the particle sealant, the furnace slag coated by the mixture of bentonite, sepiolite and guargum, was developed to compensate these weak points and the hydraulic conductivity of the particle sealant was evaluated. Drying shrinkage cracking and swelling index was estimated to find the optimal mixing ratio of bentonite, sepiolite and guargum. The hydraulic conductivity of the particle sealants having different amount of sealant (bentonite-sepioliteguargum mixture) coating the furnace slag was estimated using the rigid wall permeameter and flexible wall permeameter. The results showed that drying shrinkage cracking was not found in the bentonite-sepiolite mixture with 20% sepiolite contents and the results from free swelling tests for the sealant having 1 : 0.025, 1 : 0.05 and 1 : 0.075 of weight ratios of bentonite-sepiolite mixture and guargum under simulated sea water condition were higher than those for the bentonitesepiolite mixture without guargum under tap water condition. These three sealants were coated on the furnace slag with 50% and 60% of sealant in the particle sealant and the hydraulic conductivity was estimated. In the cases of the particle sealants having 20% sepiolite in the bentonite-sepiolite mixture and 1 : 0.075 weight ratio of the bentonite-sepiolite mixture and guargum, the hydraulic conductivity from the rigid wall permeameter was below $1.0{\times}10^{-7}$ cm/sec under simulated sea water condition. The hydraulic conductivity of the particle sealant having $1.0{\times}10^{-6}$~$1.0{\times}10^{-7}$ cm/sec by the rigid wall permeameter was estimated using the flexible wall permeameter and found to be below $1.0{\times}10^{-7}$ cm/sec.