• Journal of Korean Neurosurgical Society
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• v.29 no.10
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• pp.1389-1395
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• 2000

A case report of a post-traumatic syringomyelia in a 29-year old male, developed 15 years after an L1 burst fracture, is presented. On preoperative MRI, the syrinx extended cephalad above the fracture site through the whole thoracic and cervical cord. Serial myelo-CT was performed to evaluate the dynamics of CSF. It was managed by lysis of the arachnoid adhesions, syringosubarachnoid shunt, and expansile duraplasty. After surgery, the patient's symptoms improved, and marked decrease of the syrinx was seen on postoperative MRI. The pathophysiology, the role of preoperative diagnostic methods especially serial myelo-CT, and the contmporary management modalities for posttraumatic syringomyelia is reviewed along with the pertinent literature.

• Membrane Journal
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• v.6 no.2
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• pp.109-116
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• 1996

This work is a fundamental study for applying hybrid process coupling adsorption with microfiltration to waste-water treatment. Phenol was separated by adsorption on powdered activated carbon, adsorbed phenol with activated carbon was separated by microfiltration. As the particle size in suspension increased, filtration resistance decreased, and effect of particle concentration on resistance was less pronounced. The rate of uptake was greatly dependent on the degree of phenol loading. For a smaller amounts of activated carbon, the change of permeate concentration before break point and phenol loading with time were steeper than in the case of large amounts. Permeate concentration before break point decreased with decreasing particle size, this could be due to the increase of outer surface of particle and film mass transfer coefficient.

• Korean Chemical Engineering Research
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• v.47 no.4
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• pp.410-417
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• 2009

Carbon dioxide was absorbed into GMA solution in a stirred flat cell using mesoporous catalyst Imidazole-CP-MS41, which was synthesized by CP-MCM41 with imidazole. Experiments were carried out at a batch-type absorber with different conditions, varying reaction temperature, concentration of GMA, solvent but maintaining 50 rpm of agitation speed and 2 g of catalyst. Absorption rate of $CO_2$ was used to obtain the kinetics based on the film theory using zwitterion mechanism with 2 elementary reaction and the kinetics were correlated with the solubility parameter of the solvents.

• Journal of Physiology & Pathology in Korean Medicine
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• v.16 no.6
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• pp.1302-1307
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• 2002

We experienced a case of patient of incomplete spinal cord injury following slipping off his clothes. He had complications : both leg paresisㆍboth arm weaknessㆍurine disturbanceㆍboth leg & arm sensory disorder . We could treat these complications with the methods of medical treatments ; acupunctureㆍmoxa therapyㆍherb-medicationㆍelectro-acupuncture & muscle exercises. We obtained results that motor grade and muscle atrophy were improved.

• Applied Chemistry for Engineering
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• v.3 no.1
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• pp.119-129
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• 1992

The rates of mass transfer with the alkaline hydrolysis of ethyl acetate and n-butyl acetate were measured by using a modified Lewis cell. The rates of mass transfer with chemical reaction were independent of the speed of agitation, and the reaction enhancement factors were independent of the ionic strength. The second order reaction rate constants of ethyl acetate and n-butyl acetate could be obtained from an approximate solution of a diffusion equation by film theory, and their values were $0.041m^3/kg\;mol{\cdot}s$ and $0.338m^3/kgmol{\cdot}s$, respectively.

• Applied Chemistry for Engineering
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• v.5 no.1
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• pp.149-159
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• 1994

The kinetics and equilibrium of metal extraction by benzamidoxime and phenylacetamidoxime-chloroform were investigated to apply amidoxime to metal extraction as chelating agent. The overall extraction constant extraction mechanism and selective extraction of copper were examined from the relation among extraction ratio, hydrogen ion concentration and extractant concentration. The experimental rate equation of copper extraction coincided with the theoretical rate equation and was expressed as $R_o=k{\overline{C}}_{HRo}(C_{Mo}/C_{Ho})^{1/2}$. The chemical species extracted was found to the type of ${\overline{CuR_2}}$.

• Investigative Magnetic Resonance Imaging
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• v.17 no.4
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• pp.308-311
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• 2013

Deep sylvian meningioma is a rare form of meningiomas. So far, only 4 cases including the present one have been reported in South Korea. A 43-year-old man without any previous medical history presented to our hospital with seizure. There was a rim enhancing mass in the right deep sylvian fissure without dural attachment on magnetic resonance images. Surgical resection of the mass revealed the lesion to be a meningioma in this patient.

• Archives of Plastic Surgery
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• v.32 no.6
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• pp.744-752
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• 2005

Many craniofacial and neurosurgical procedures rely on cranial bone as a bone graft. In the majority of instances, the bone heals and gives good results. But we found that if either the dura or the pericranium were missing adjacent to the cranial bone, bone absorption would be increased. We studied a single animal model, investigating the contribution of the dura and the pericranium in the process of cranial bone absorption. The animals were divided into four groups of each five animals depending on the differential blockade of the dura and/or the pericranium by silastic sheet. Bilateral $100-mm^2$, parietal bone flaps were harvested from mature rabbits. Animals were humanely killed after 12 weeks, and histomorphometric analysis was performed. The volume maintenance is as follows; Group I; 89.0%, Group II; 80.0%, Group III; 63.3%, Group IV; 52.4%. The weight maintenance; Group I; 87.1%, Group II; 79.4%, Group III; 61.6%, Group IV; 51.1%. The histological contribution of living bone; Group I; 92.9%, Group II; 85.6%, Group III; 71.1%, Group IV; 56.2%. Significantly increased bone absorption occurred in Group II, III, IV compared with Group I. Conclusions are: 1. Cranial bone absorption is effected by both the dura and the pericranium. 2. The dura is more important than the pericranium in preventing cranial bone absorption. 3. The dura to be the source of central cranial bone and the pericranium to be the source of peripheral cranial bone.

• The Korean Journal of Pain
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• v.1 no.1
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• pp.87-90
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• 1988

In recent years the use of epidural opiates has increased and although this method of pain relief has shown good results in clinical practice It is still subject to certain drawbacks, the most serious of which appears to be delayed respiratory depression. Since ketamine administered systemically is unlikely to produce respiratory depression it seemed worthwhile to investigate the possibility of exploiting the potent analgesic property to ketamine by its epidural administration. The analgesic effect of ketamine 4 mg, administered epidural space, was evaluated. The duration of pain relief varied from less than 3 hours in 20% to over 24 hours in 30% of the cases. In 62.5% of the cases pain relief exceeded 6 hours. There was no evidence of respiratory depression, and there no postoperative neurologic sequelae. The present results indicated the need for further studies to compare the efficacy and safety of epidural ketamine with the response to epidural opioids for the relief of postoperative pain.

• Applied Chemistry for Engineering
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• v.4 no.1
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• pp.103-112
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• 1993

The rates of overall mass transfer of n-butyl acetate in the alkaline hydrolysis of n-butyl acetate were measured by using a mechanically agitated vessel in order to get the relationship between the mass transfer rates and experimental variables. The interfacial area between liquid-liquid heterogeneous phases could be obtained by comparing the theoretical values of reaction enhancement factor from an approximated solution of a diffusion equation based on the film theory with the experimental data.