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Yoon, Chang-Mann,Indiragandhi, Pandiyan,Anandham, Rangasamy,Cho, Soo-Won,Sa, Tong-Min,Kim, Gil-Hah The Korean Society for Applied Biological Chemistr 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.4
Investigations of the diversity of bacteria in acaricide resistant and susceptible populations from the whole mite extracts of twospotted spider mite-Tetranychus urticae were made using 8 different bacterial growth media and identified through 16S rRNA gene sequence analysis. The pyridaben resistant population was diversified with six genera including Chryseobacterium, Sphingomonas, Acidovorax, Herbaspirillum, Janthinobacterium, and Xenophilus, whereas the acequinocyl resistant population was associated with Bacillus, Pasteurella, Staphylococcus, Enterobacter, and Pseudomonas. The fenpropathrin resistant population harbored only two phylotypes (Pantoea and Pseudomonas). Citrobacter, Enterobacter, and Pantoea were recovered from the susceptible population. No correlation was observed between bacterial density and bacterial diversity. Of the 8 different growth media, R2A supported a greater number of cultivable bacterial phylotypes followed by Luria Bertani and brain heart infusion agar. This study suggests that knowledge of the diversity of bacterial phylotypes present in host insect pest species may be useful for developing biological approaches in insect-microbe interaction.
Repellent Efficacy of Caraway and Grapefruit Oils for Sitophilus oryzae (Coleoptera: Curculionidae)
Yoon, Chang-Mann,Kang, Shin-Ho,Jang, Sun-Ah,Kim, Young-Jae,Kim, Gil-Hah Korean Society of Applied Entomology 2007 Journal of Asia-Pacific Entomology Vol.10 No.3
This study examined the repellent efficacy of six essential oils extracted from caraway, clary sage, grapefruit, strawberry, thyme white, ylangylang, and their related volatile constituents against the adult rice weevil, Sitophilus oryzae using an olfactometer. The caraway and grapefruit oil showed the highest repellent efficacy against the rice weevil at a dose of $10{\mu}{\ell}$. Gas Chromatography-Mass Spectrophotometer analysis revealed caraway oil to be rich in carvone and limonene, and grapefruit oil to be rich in limonene, ${\beta}-myrcene\;and\;{\alpha}-pinene$. When the monoterpene was mixed in equal parts with the caraway and grapefruit essential oils, carvone with limonene in caraway oil demonstrated the highest repellent efficacy (96.7%). Limonene with ${\alpha}-pinene\;and\;{\beta}-myrcene$ in grapefruit showed strong repellent efficacy (86.4%) with synergistic effects on the S. oryzae. A mixture of caraway and grapefruit oils, as well as carvone and limonene, can be potent repellents that may be useful for controlling S. oryzae.
Chang Mann Yoon,Pandiyan Indiragandhi,Rangasamy Anandham,Soo Won Cho,Tong Min Sa,Gil Hah Kim 한국응용생명화학회 2010 Journal of Applied Biological Chemistry (J. Appl. Vol.53 No.4
Investigations of the diversity of bacteria in acaricide resistant and susceptible populations from the whole mite extracts of twospotted spider mite-Tetranychus urticae were made using 8 different bacterial growth media and identified through 16S rRNA gen
( Chang Mann Yoon ),( Pandiyan Indiragandhi ),( Rangasamy Anandham ),( Soo Won Cho ),( Tong Min Sa ),( Gil Hah Kim ) 한국응용생명화학회 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.4
Investigations of the diversity of bacteria in acaricide resistant and susceptible populations from the whole mite extracts of twospotted spider mite-Tetranychus urticae were made using 8 different bacterial growth media and identified through 16S rRNA gene sequence analysis. The pyridaben resistant population was diversified with six genera including Chryseobacterium, Sphingomonas, Acidovorax, Herbaspirillum, Janthinobacterium, and Xenophilus, whereas the acequinocyl resistant population was associated with Bacillus, Pasteurella, Staphylococcus, Enterobacter, and Pseudomonas. The fenpropathrin resistant population harbored only two phylotypes (Pantoea and Pseudomonas). Citrobacter, Enterobacter, and Pantoea were recovered from the susceptible population. No correlation was observed between bacterial density and bacterial diversity. Of the 8 different growth media, R2A supported a greater number of cultivable bacterial phylotypes followed by Luria Bertani and brain heart infusion agar. This study suggests that knowledge of the diversity of bacterial phylotypes present in host insect pest species may be useful for developing biological approaches in insect-microbe interaction.
Oral manifestation and root canal therapy of the patient with mucopolysaccharidosis
Yoon, Ji-Hye,Lee, Hyo-Il,Jang, Ji-Hyun,Choi, Sung-Hyeon,Chang, Hoon-Sang,Hwang, Yun-Chan,Hwang, In-Nam,Lee, Bin-Na,Oh, Won-Mann The Korean Academy of Conservative Dentistry 2019 Restorative Dentistry & Endodontics Vol.44 No.2
Mucopolysaccharidosis (MPS) is an inherited metabolic disorder caused by a deficiency in enzymes that participate in the degradation of glycosaminoglycans (GAGs) such as heparin sulfate and dermatan sulfate. Left untreated, patients show progressive mental and physical deterioration due to deposition of GAGs in organs. Death often occurs due to cardiac or respiratory failure before patients reach their early twenties. MPS has several oral and dental manifestations. An enlarged head, short neck, and open mouth associated with a large tongue are major characteristics of MPS patients. Dental complications can be severe, including unerupted dentition, dentigerous cyst-like follicles, malocclusions, condylar defects, and gingival hyperplasia. A 21-year-old female patient with MPS was described in this article, with special emphasis on oral manifestations and dental treatment.
Yoon, Seok-Mann,Shim, Jai-Joon,Kim, Sung-Ho,Chang, Jae-Chil The Korean Neurosurgical Society 2012 Journal of Korean neurosurgical society Vol.51 No.3
The treatment of bilateral vertebral artery dissecting aneurysms (VADAs) presenting with subarachnoid hemorrhage (SAH) is still challenging. The authors report a rare case of bilateral VADA treated with coil trapping of ruptured VADA and covered stents implantation after multiple unsuccessful stent assisted coiling of the contralateral unruptured VADA. A 44-year-old woman was admitted to our hospital because of severe headache and sudden stuporous consciousness. Brain CT showed thick SAH and intraventricular hemorrhage. Cerebral angiography demonstrated bilateral VADA. Based on the SAH pattern and aneurysm configurations, the right VADA was considered ruptured. This was trapped with endovascular coils without difficulty. One month later, the contralateral unruptured VADA was protected using a stent-within-a-stent technique, but marked enlargement of the left VADA was detected by 8-months follow-up angiography. Subsequently two times coil packing for pseudosacs resulted in near complete occlusion of left VADA. However, it continued to grow. Covered stents graft below the posterior inferior cerebellar artery (PICA) origin and a coronary stent implantation across the origin of the PICA resulted in near complete obliteration of the VADA. Covered stent graft can be used as a last therapeutic option for the management of VADA, which requires absolute preservation of VA flow.
Pandiyan Indiragandhi,Chang Mann Yoon,Jeong Oh Yang,Soo Won Cho,Tong Min Sa,Gil Hah Kim 한국응용생명화학회 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.5
Whiteflies are sap-sucking insects belonging to the hemipteran order. They are well known for their menace to agriculture, as pests and vectors, and are reported for their bacterial and Rickettsia association in B biotype. In the present investigation, cul
Kyung-Bong Yoon,Sung-Wan Ahn,Chang Mann Ko 대한생리학회-대한약리학회 2004 The Korean Journal of Physiology & Pharmacology Vol.8 No.2
Voltage-sensitive release mechanism was pharmacologically dissected from the Ca<SUP>2</SUP>-induced Ca<SUP>2</SUP> release in the SR Ca<SUP>2</SUP> release in the rat ventricular myocytes patch-clamped in a whole-cell mode. SR Ca<SUP>2</SUP> release process was monitored by using forward-mode Na<SUP></SUP>-Ca<SUP>2</SUP> exchange after restriction of the interactions between Ca<SUP>2</SUP> from SR and Na<SUP></SUP>-Ca<SUP>2</SUP> exchange within micro-domains with heavy cytosolic Ca<SUP>2</SUP> buffering with 10 mM BAPTA. During stimulation every 10 s with a pulse roughly mimicking action potential, the initial outward current gradually turned into a huge inward current of 12.9⁑0.5 pA/pF. From the inward current, two different inward I<SUB>NCX</SUB>s were identified. One was 10 μM ryanodine-sensitive, constituting 14.2⁑2.3%. It was completely blocked by CdCl<SUB>2</SUB> (0.1 mM and 0.5 mM) and by Na<SUP></SUP>-depletion. The other was identified by 5 mM NiCl<SUB>2</SUB> after suppression of I<SUB>CaL</SUB> and ryanodine receptor, constituting 14.8⁑1.6%. This latter was blocked by either 10 mM caffeine-induced SR Ca<SUP>2</SUP>-depletion or 1 mM tetracaine. IV-relationships illustrated that the latter was activated until the peak in 30∼35 mV lower voltages than the former. Overall, it was concluded that the SR Ca<SUP>2</SUP> release process in the rat ventricular myocytes is mediated by the voltage-sensitive release mechanism in addition to the Ca<SUP>2</SUP>-induced-Ca<SUP>2</SUP> release.
윤석만(Seok Mann Yoon),안덕용(Deog Yong Ahn),이창수(Chang Soo Lee),백재승(Jae Sung Paek),신찬영(Chan Young Shin),이병로(Byong Ro Lee) 대한설비공학회 2017 대한설비공학회 학술발표대회논문집 Vol.2017 No.6
본 연구는 농업에 지역난방을 연계하여 활용함을 목적으로 테스트베드를 구축하고 운영하여 실증자료를 확보하는 것이다. 지역난방은 주로 밀집된 도시를 중심으로 운영되고 있으므로 열공급망 인근 근교농업에 활용되는 것이 합리적이다. 근교농업의 대표적인 것으로서 원예재배를 들 수 있으며, 테스트베드로써 동양난 재배 온실을 선정하였다. 선정된 온실의 전체규모는 약 5,000m2에 해당하며, 온실온도를 22 ~ 25 ℃ 정도로 유지하여 열사용량이 비교적 많은 편이다. 한편, 최근 지역난방은 신재생에너지와 연계성을 고려하고 다단 열이용까지 고려하여 공급온도를 낮추는 경향이 있다. 따라서 지역난방 공급관 및 회수관으로부터 열공급이 가능하도록 시스템을 구성하여 혼합관(공급관과 회수관) 및 회수관 단독 열공급으로 운영하였으며, 운영자료를 분석하였다. 대부분의 기간 동안 열공급은 목표온도 달성이 가능하였으며 회수관 단독 공급의 경우, 일부기간 계절에 따라 지역난방 회수온도가 과도하게 낮은 기간에 대해서는 추가적인 검토가 필요하다. 또한 테스트베드 구축 운영결과로부터의 최대 열부하값과 최대 열부하분석이 지역/온실/작물별에 의한 값과 유사한 결과를 보이는 것을 확인할 수 있었다.