http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Naichuan Su(Naichuan Su ),Sana Harroui(Sana Harroui ),Fred Rozema(Fred Rozema ),Stefan Listl(Stefan Listl ),Jan de Lange(Jan de Lange ),Geert J.M.G. van der Heijden(Geert J.M.G. van der Heijden ) 대한구강악안면외과학회 2023 대한구강악안면외과학회지 Vol.49 No.1
The current study aimed to explore the types and frequencies of uncommon complications associated with third molar extractions based on a scoping review of case reports and case series. The study used an electronic literature search based on PubMed and Embase up to March 31, 2020, with an update performed on October 22, 2021. Any case reports and case series that reported complications associated with third molar extractions were included. The types of complications were grouped and the main symptoms of each type of complication were summarized. A total of 51 types of uncommon complications were identified in 248 patients from 186 studies. Most types of complications were post-operative. In the craniofacial and cervical regions, the most frequent complications included iatrogenic displacement of the molars or root fragments in the craniofacial area, late mandibular fracture, and subcutaneous emphysema. In other regions, the most frequent complications include pneumomediastinum, pneumorrhachis, pneumothorax, and pneumopericardium. Of the patients, 37 patients had life-threatening uncommon complications and 20 patients had long-term/irreversible uncommon complications associated with third molar extractions. In conclusion, a variety of uncommon complications associated with third molar extractions were identified. Most complications occurred in the craniofacial and cervical regions and were mild and transient.
Anti-inflammatory compounds from Ampelopsis cantoniensis.
Van Thu, Nguyen,Cuong, To Dao,Hung, Tran Manh,Van Luong, Hoang,Woo, Mi Hee,Choi, Jae Su,Lee, Jeong-Hyung,Kim, Jeong Ah,Min, Byung Sun Natural Product Communications 2015 Natural product communications Vol.10 No.3
<P>Many natural products have been shown to have an inhibitory effect on nitric oxide (NO), and are used as chemotherapy agents for inflammation disease. The current study was designed to evaluate the anti-inflammatory activity of chemical components from the leaves of Ampelopsis cantoniensis. Sixteen compounds (1-16) were isolated and identified. Phloretin (5) and 5,7,3',5'-tetrahydroxyflavanone (16) inhibited nitric oxide (NO) production with IC50 values of 5.2, and 18.5 μM, respectively. The inhibitory effect of compounds 5 and 16 were accompanied by dose-dependent decreases in LPS-induced nitric oxide synthase (iNOS) in RAW 264.7 cells, respectively. This study investigated the significant anti-inflammatory properties of isolated compounds from the leaves of A. cantoniensis for the first time. The findings demonstrate that A. cantoniensis could be used beneficially in the treatment of inflammation disease.</P>
An Integrated Design of Planar Three-dimensional Magnetometers Powered by Novel Flux Guides
Van Su Luong 한국자기학회 2020 Journal of Magnetics Vol.25 No.3
This paper presents a new framework for integrating a planar three-dimensional (3D) magnetometer, featuring high accuracy and reduced size. Sensing elements in this design are magnetoresistance (GMR) sensors, which generally exhibit good in-plane sensitivity but limiting performance when working out-of-plane. Therefore, to improve the out-of-plane sensing ability of the GMR sensors, we design a flux guide (FG) to redirect the out-of-plane magnetic field component to the sensitive plane of the sensors. In doing so, a Ni-Zn cubic FG, combined with a full-bridge of GMR, is exploited for z-sensing axis detection. The cross-detection minimization of in-plane magnetic fields is optimized by an FG rotated by 45o in the x-y axes. Moreover, for boosting the planar sensitivity, two half-bridge GMRs are incorporated into a cross-shaped flux concentrator, working as a fullbridge sensor. The performance of the proposed design is simulated, as well as estimated the sensing features.
QRD-based Blind Detection for Orthogonal Space-Time Block Codes
Van-Su Pham,Minh-Tuan Le,Linh Mai,Jae-young Lee,S.M. Humayun Kabir,Giwan Yoon 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
This work presents a simplified QR decomposition based (QRD-based) blind decoding for Orthogonal Space-Time Block Codes (OSTBCs) with M-ary Phase Shift Keying (M-PSK) modulation constellation. By applying the proposed matrix partition, the blind detection problem becomes simpler. In addition, with the aid of QRD, the proposed detection requires a remarkably low complexity while maintaining a reasonable low Bit-error-rate (BER).
Pham Van-Su,Le Minh-Tuan,Mai Linh,Yoon Gi-Wan The Korea Institute of Information and Commucation 2006 Journal of information and communication convergen Vol.4 No.2
This work presents a low complexity maximum-likelihood decoder for signal detection in VBLAST-STBC system, which employs non-square O-STBC code rate 3/4. Stacking received symbols from different symbol duration and applying QR decomposition result in the special format of upper triangular matrix R so that the proposed decoder is able to provide not only ML-like BER performance but also very low computational load. The low computational load and ML-like BER performance properties of the proposed decoder are verified by computer simulations.
Pham, Van-Su,Le, Minh-Tuan,Mai, Linh,Kabir, S.M.Humayun,Yoon, Gi-Wan The Korea Institute of Information and Commucation 2008 Journal of information and communication convergen Vol.6 No.2
In the blind Maximum-likelihood (ML) detection for Orthogonal Space-Time Block Codes (OSTBC), the problem of ambiguity in determining the symbols has been a great concern. A possible solution to this problem is to apply semi-blind ML detection, i.e. the blind ML decoding with pilot symbols or training sequence. In order to increase the performance, the number of pilot symbols or length of training sequence should be increased. Unfortunately, this leads to a significantly decrease in system spectral efficiency. This work presents an approach to resolve the aforementioned issue by introducing a new method for constructing transmitted information symbols, in which transmitting information symbols drawn form different modulation constellations. Therefore, the ambiguity can be easily eliminated. In addition, computer simulation is implemented to verify the performance of the proposed approach.
Le, Van Phan,Nguyen, Tung,Park, Jong-Hyeon,Kim, Su-Mi,Ko, Young-Joon,Lee, Hyang-Sim,Nguyen, Van Cam,Mai, Thuy Duong,Do, Thi Hoa,Cho, In-Soo,Lee, Kwang-Nyeong Elsevier 2010 Veterinary microbiology Vol.145 No.3
<P><B>Abstract</B></P><P>Six field foot-and-mouth disease viruses (FMDVs), including four serotype O and two serotype Asia 1 strains, were collected from endemic outbreaks in 2005, 2006, and 2007 from four different provinces in Vietnam. The viruses were isolated and genetically characterized for their complete genomic sequences. The genetic analysis based on the complete genomic coding sequences revealed that the four serotype O FMDVs were related to each other, sharing 95.2% nucleotide (nt) identity and 97.5–97.6% amino acid (aa) identity. Genetic analysis and a phylogenetic tree, based on the VP1 gene of FMDV, showed that the four present Vietnamese serotype O strains have a high level of identity with other serotype O representatives of the Mya-98 lineage of the Southeast Asian (SEA) topotype. The four viruses were all clustered into the Mya-98 lineage of the SEA topotype, sharing 92.3–95.6% nt and 93.4–96.7% aa identity. This finding of the Mya-98 lineage was different from previous reports that the Vietnamese serotype O strains belonged to the Cam-94 lineage of the SEA topotype and two other topotypes, Middle East-South Asia (ME-SA) and Cathay. For the two serotype Asia 1 FMDVs, the genetic analysis based on the complete genomic coding sequences as well as on the VP1 gene revealed that they belonged to two genogroups, IV and V. Of note, the As1/VN/QT03/2007 strain of genogroup V, isolated in 2007, was very closely related to the pandemic Asia 1 strain which caused FMD outbreaks in China (Asia1/WHN/CHA/06, FJ906802) and Mongolia (Asia1/MOG/05, EF614458) in 2005, sharing 99.0–99.3% nt and 99.5–100% aa identity. In contrast, the second strain As1/VN/LC04/2005 of genogroup IV, isolated in 2005, was closely related to all referenced Vietnamese serotype Asia 1 strains found in the GenBank databases, sharing 86.4–100% nt and 90.9–100% aa identity with each. This study is the first description of the full-length genomic sequence of Vietnamese FMDV serotypes O and Asia 1 and may provide the evidence of the concurrent circulation of different serotypes and subtypes of FMDV in recent years in Vietnam.</P>