• Journal of the Korea Organic Resources Recycling Association
• /
• v.3 no.1
• /
• pp.35-42
• /
• 1995

To evaluate the stability of the compost made from food wastes, which were treated in the fermenting tank for 96 hours and then composted additionally in the static pile, physico-chemical properties and phytotoxicities were investigated. When food wastes were treated in the fermenting tank for 96 hours at $55{\sim}60^{\circ}C$, there is the effect of decreasing about 60% of total weight and improving the storage and the handling. However, it is impossible to make the matured compost in the fermenting tank within 2~3 days, which is the operating condition recommended by manufacturers. To use compost in the agricultural field, after treating food wastes in the fermenting tank for 2~3 days, it needs to compost additionally in the staic pile under the suitable fermenting condition over 6 weeks.

• Journal of the Korea Organic Resources Recycling Association
• /
• v.3 no.1
• /
• pp.3-11
• /
• 1995

This study was conducted to estimate the stabilization degree of compost which made from Korean food wastes. To make the compost, food wastes were mixed with dried paper sludge, sawdust and the rotten wood waste which had cultivated mushrooms, and then mixture was composted in $1.1m^3$ of chamber which installed with the blower for maintaining the aerobic condition. Y value, EC and pH were changed remarkably for the early stage of composting. These changes showed that the compost of food wastes could be stabilized within 30~35 days and that the substrate, food wastes, can be easily used as energy source for microorganisms. Although these phyico-chemical properties indicated that food wastes could be composted within 30 days during the composting, the temperature of pile maintained over $50^{\circ}C$ for 80 days, and C/N ratio decreased gradually for over 50 days. In conclusion, more than 50 days were required to stabilize the compost of food wastes.

• Journal of The Korean Society of Inherited Metabolic disease
• /
• v.14 no.1
• /
• pp.60-65
• /
• 2014

Smith-Lemli-Opitz syndrome (SLOS) is an autosomal recessive disease caused by a defect in cholesterol biosynthesis. This mutation encodes 7-dehydrocholesterol reductase (DHCR7), which is located on chromosome 11q13. It is characterized by typical facial appearances, microcephaly, small up-turned nose, cleft palate, syndactyly, and is correlated with cardiac, gastrointestinal and genital malformations. There may also be mental retardation, behavioral problems and growth retardation. It causes a broad spectrum of effects, ranging from a mild disorder of learning and behavior to a lethal malformation. There are four reports of Smith-Lemli-Opitz syndrome in Korean children. Here, we describe a two months old female with microcephaly, toe syndactyly and a cleft soft palate who was diagnosed as SLOS with c. 1054 C>T (p.R352W) and c.907G>A (p. G303R) mutations.

• Archives of Reconstructive Microsurgery
• /
• v.3 no.1
• /
• pp.90-96
• /
• 1994

The rectus abdominis muscle is versatile alone or as a musculocutaneous flap and useful for defects of moderate size requiring well vascularized tissue in the extremities. The muscle is long, thin and thus well suites for the hand, anterior tibial and ankle defects. The anatomical location makes dissection convenient for the working teams simultaneously in the same field. Authors have performed rectus abdominis free muscle transplantation in 10 cased to fit defects or cavities in the lower extremities at Chonbuk National University Hospital from June 1992 through August 1994. The results were as follows: 1. 7 cases of the 10 were exposed lower extremities from the vehicle trauma and rectus abdominis free muscles were transplanted at average of the 40th hospital day. 2. In chronic osteomyelitis, saucerization and parenteral antibiotics infusion therapy were combined with in 2 cases. 3. 9 of 10 cases were in complete success except 1 case, 67-yrs-old female, who was sustained the high-energery motor vehicle trauma. 4. Split thickness skin graft was performed on the well-grown surface of the rectus abdominis muscle in the extremities at the 4th postoperative week and taken well without any complications.

• Korean Journal of Veterinary Research
• /
• v.27 no.1
• /
• pp.19-25
• /
• 1987

To validate the comparision of proximal and distal large intestinal motility, the amplitude and frequency of spontaneous motility, the effect of acetylcholine, the effect of atropine on the response of acetylcholine, the effect of histamine and the effect of pyrilamine and cimetidine on the response of histamine were investigated in rabbit. The results were summarized as follows: 1. The amplitude of spontaneous motility was more powerful on the proximal large intestine than that of the distal large intestine, but the frequency of spontaneous motility was similar on the both proximal and distal large intestine in rabbit. 2. Acetylcholine caused the contraction of proximal and distal large intestine, and the contractile response were increased between the concentration of acetylcholne $10^{-9}$ and $5{\times}10^{-6}M$ and $10^{-7}$ and $10^{-4}M$ on the proximal and distal large intestine, respectively, with dose-dependent manner in rabbit. 3. The contractile response induced by acetylcholine was completely blocked by the post-treatment with cholinergic receptor blocker, atropine $10^{-6}M$. 4. Histamine caused the contraction of proximal and distal large intestine and the contractile response were increased between the concentration of histamine $10^{-9}$ and $5{\times}10^{-5}M$ and $10^{-5}$ and $10^{-3}M$ on the proximal and distal large intestine, respectively, with dose-depend ent manner in rabbit. 5. The contractile response induced by histamine was completely blocked by the pretreatment with $H_1$-receptor blocker, pyrilamine $10^{-6}M$, but not blocked by the pretreatment with $H_2$-receptor blocker, cimetidine $10^{-6}M$.

• Korean Journal of Veterinary Research
• /
• v.53 no.1
• /
• pp.37-42
• /
• 2013

Mesenchymal stem cells (MSCs) have ability to differentiate into multi-lineage cells, which confer a great promise for regenerative medicine to the cells. The aim of this study was to establish a method for isolation and characterization of adipose tissue-derived MSC (pAD-MSC) and bone marrow-derived MSC (pBM-MSC) in pigs. Isolated cells from all tissues were positive for CD29, CD44, CD90 and CD105, but negative for hematopoietic stem cell associated markers, CD45. In addition, the cells expressed the transcription factors, such as Oct4, Sox2, and Nanog by RT-PCR. pAD-MSC and pBM-MSC at early passage successfully differentiated into chondrocytes, osteocytes and adipocytes. Collectively, pig AD-MSC and BM-MSC with multipotency were optimized in our study.

• Analytical Science and Technology
• /
• v.23 no.4
• /
• pp.331-346
• /
• 2010

Perfluorinated compounds have characteristics of resistance to heat, acidic, basic conditions and also resist water, oil, grease, pollutant. Futhermore they are used by various industrial material, nowadays, they produced in large scale for indutrial and commercial areas. However, they also resist metabolizing and degrading in environmental system (plant, animal, even human body). Moreover, in animal's bodies, PFCs can be accumulated in organ (eg; liver) and lead to liver cell necrosis even oncogenesis. Perfluorinated compounds are newly registered as new persistent organic pollutants (POPs) on Stockholm convention in 2009. Therefore necessity for analytical methodology for determination of PFCs in various environmental samples is even more increased. This study discussed sample preparation and instrumental conditions for the analysis of PFCs in environmental and biota samples.

• Applied Biological Chemistry
• /
• v.35 no.1
• /
• pp.1-5
• /
• 1992

The concentrations of tocopherols and lipids, and compositions of fatty acids in the seeds of thirteen pulse plants, which are used for the raw materials of our traditional food as well as for the typical nutrients in Korea, were analyzed by HPLC and GC. The beans showed great differences of the tocopherol concentrations from 4.74 to 44.05 mg/100g, which were in the order of ${\gamma}->{\delta}->{\alpha}-tocopherol$ with the exception of the order of ${\delta}->{\gamma}->{\alpha}-tocopherol$ in jeock sodu and gal sodu of azuki bean. The contents of lipids were also remarkably different as 0.53 to 20.96%. Especially, the beans having from 15.78 to 20.96% of lipid contents showed high composition ratios of unsaturated fatty acid between 85.6 to 88.2%, of which the contents of linoleic acid were the highest as 56.0 to 58.6% of the total fatty acids, and also showed comparatively high concentrations of tocopherols as 23.2 to 44.05 mg/100g. There were significantly positive correlation between ${\gamma}-tocopherol$ and unsaturated fatty acids.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2007.04a
• /
• pp.63-66
• /
• 2007

This study investigates the fire resistance properties of high strength concrete, around 60MPa class, designed with various admixture types and fiber content. Test showed that the increase of fiber content decreased the fluidity and slightly inclined the air content of fresh concrete. However, the fiber content in concrete did not affect the compressive strength. For the addition of admixture, specimens adding the shrinkage-reducing-agent (SR) indicated the strength value at 70MPa, which is followed by incorporating silica fume (SF) at 66MPa, the combination of expansive admixture (EA) and SR at 63MPa, only EA at 59MPa, blast furnace slag (BS) at 58MPa and fly ash (FA) at 50MPa in an order. After completing the fire test, all specimens adding 0.05vol.% of polypropylene fiber exhibited protection of spatting, except for the specimens incorporating loft of SF and incorporating 20% of SF with only SR and the combination of EP and SRA, respectively. Therefore the most effective result of this study was shown in the specimens incorporating love of FA and 30% of BS and incorporating 20% of SF with 5 % of EA. It is expected that this test results will be crucial references in near future to develope the spatting resistance method of high strength concrete.

• Journal of The Korean Dental Society of Anesthesiology
• /
• v.4 no.2 s.7
• /
• pp.90-95
• /
• 2004

Background: Sevoflurane, a rotatively new inhalational anesthetic. has non-pungent odor and is less reluctant to pediatric patients. The purpose of this study is to examine the feasibility of sevoflurane in inhalational sedation instead of the nitrous oxide for short and simple dental treatments in pediatric patients. Patients and Methods: Fifteen healthy children, whose dental treatment was abandoned due to their little or no cooperation, were selected with their caregivers' written permission. Deep sedation was induced and maintained with oxygen and 1-5% sevoflufane via specially designed nasal mask. Blood pressure, heart rate, oxygen saturation, and electrocardiogram were monitored at 3-nin interval. A dental anesthesiologist, who was independent of dental treatments, was wholly responsible for the sedation procedure. Post-sedation complications and operator's and caregiver's acceptability of this type of inhalational sedation were also investigated. Results: The systolic and diastolic blood pressure, heart rate, and oxygen saturation was significantly depressed during the deep sedation using sevoflurane (P < 0.05). No severe post-sedation complications were found, however, bradycardia was reported in 3 patients. Almost all the operators and caregivers answered that they would adapt this sedation procedure again if possible. Conclusion: In this study, inhalational deep sedation using sevoflurane for dental treatments was found to be very useful. Furthermore, the application of sevoflurane to conscious sedation for pediatric and adult dental patients should be added.