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Combination of Metal Shielding and Distance Estimation for Electromagnetic Compatibility Guarantee

Journal of Electromagnetic Analysis and Applications 2019年第9期11卷 135-147页

作者： Nguyen Duc truong Tran van Nghia Bui Duc Chinh Ho Quang Quy Standard Measurement Quality Department Hanoi Vietnam Faculty of Electronics and Telecommunications Electric Power University (EPU) Hanoi Vietnam Institute of Cryptographic Science and Technology Hanoi Vietnam Ho Chi Minh City University of Food Industry Ho Chi Minh City Vietnam

In this paper, a solution for electromagnetic compatibility guarantee based on the combination of metal shielding and circuit components distance estimation methods is presented. The electromagnetic noises generated from a working radio-electronic unit can expand into the space and act on other around radio-electronic units. An EMC guaranteed radio-electronic unit by the suitable technique method will not cause the electromagnetic noise to others. In opposition, it will not be under electromagnetic action from another one. Due to the power of electromagnetic noise, the metal shielding, distance estimation or other technique methods should be used to guarantee EMC. Every method has own advantage as so as weakness for detail radio-electronic unit, so it is necessary to choose a suitable method to guarantee EMC for them, the combination of metal shielding and distance estimation is a choice, for example. The proposed solution has been evaluated by using CST (Computer Simulation Technology) software and EMxpertEHX analyzer in oscillator circuit context. The simulated results on CST show that the proposed solution decreases the electromagnetic radiation about of 39.1 dB at frequency 500 MHz in comparison to results when nothing electromagnetic compatibility methods are not used. The experimental results on the oscillator circuit are presented. The electromagnetic radiation reduction of the oscillator circuit is about of (25 - 30) dB. In comparison to individual metal shielding and distance estimation methods, the effectiveness of the proposed solution for electromagnetic compatibility guarantee is significantly increased.

关键词： Electromagnetic Compatibility Electromagnetic Radiation Metal Shielding Distance Estimation

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The Construction and Application of Biosensor for Detection of Quorum Sensing in Pseudomonas Aeruginosa and Serratia Marcescens

The Construction and Application of Biosensor for Detection ...

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作者： truong Ngoc Tu张玉秀华东理工大学

学位级别：硕士

Quorum sensing （QS） is a phenomenon present in many gram-negative bacteria that allows bacterial communication and controlled expression of a large suite of genes through quorum sensing signals-N-acyl homoserin lactones （AHLs）. Generally, QS can occur between diverse species as well as within a single bacterial species, and can control a host of different processes, essentially serving as a simple communication network. A variety of different molecules can be used as signals. Common classes of signaling molecules are oligopeptides in gram-positive, AHL in gram-negative bacteria and a family of autoinducers known as autoinducers-2 in both gram-negative and gram-positive bacteria. Bacteria that use quorum sensing constantly produce and secrete certain signaling molecules-autoinducers or pheromones. These bacteria also have a receptor that can specifically detect the signaling molecule （called inducer）. When the inducer binds the receptor, it activates transcription of certain genes, including those for inducer synthesis. There is a low likelihood of a bacterium detecting its own secreted inducer. Thus, in order for gene transcription to be activated, the cell must encounter signaling molecules secreted by other cells in its environment. When only a few other bacteria of the same kind are in the vicinity, diffusion reduces the concentration of the inducer in the surrounding medium to almost zero, so the bacteria produce little inducer. However, as the population grows the concentration of the inducer passes a threshold, causing more inducer to be synthesized. This forms a positive feedback loop, and the receptor becomes fully activated. Activation of the receptor induces the up regulation of other specific genes, causing all of the cells to begin transcription at approximately the same time. This coordinated behavior of bacterial cells can be useful in a variety of situations. In this study, in order to investigate quorum sensing in Pseudomonas aeruginosa and S

关键词：生物传感器铜绿假单胞菌革兰氏阴性细菌

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中国和越南苔类植物新记录种--柏氏细鳞苔

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西北植物学报 2018年第1期38卷 183-186页

作者：韦玉梅唐启明 truong van Do 朱瑞良广西壮族自治区中国科学院广西植物研究所广西喀斯特植物保育与恢复生态学重点实验室广西桂林541006 越南国家自然博物馆维管束植物分类与多样性保育中心越南河内100803 华东师范大学生命科学学院上海200062

报道了采自中国广西和越南北部地区细鳞苔属新记录种——柏氏细鳞苔[Lejeunea patersonii(Steph.)Steph.]。该种的主要特征为侧叶顶端圆形或钝形,叶边缘具圆齿;腹叶小,远生,宽为茎的1~2倍;叶细胞角质层平滑,三角体不明显或中等大,中部... 详细信息

报道了采自中国广西和越南北部地区细鳞苔属新记录种——柏氏细鳞苔[Lejeunea patersonii(Steph.)Steph.]。该种的主要特征为侧叶顶端圆形或钝形,叶边缘具圆齿;腹叶小,远生,宽为茎的1~2倍;叶细胞角质层平滑,三角体不明显或中等大,中部球状加厚缺。该研究对柏氏细鳞苔与其相似种进行了细致的比较讨论,并对柏氏细鳞苔原有的地理分布信息进行了更正,重新确认了该种的地理分布。

关键词：柏氏细鳞苔细鳞苔科新记录种中国越南

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Improving shipboard electronics cooling system by optimizing the heat sinks configuration

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Journal of Ocean Engineering and Science 2022年第5期7卷 498-508页

作者： Hamid Maleki Mohammad Reza Safaei Arturo S.Leon Taseer Muhammad truong Khang Nguyen Department of Mechanical Engineering Isfahan University of TechnologyIsfahan 84156-83111Iran Department of Mechanical Engineering Florida International UniversityMiamiFL 33174USA Department of Medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan Mechanical Engineering Department Faculty of EngineeringKing Abdulaziz UniversityJeddahSaudi Arabia Department of Civil and Environmental Engineering Florida International UniversityMiamiFL 33174USA Department of Mathematics College of SciencesKing Khalid UniversityAbha 61413Saudi Arabia Division of Computational Physics Institute for Computational ScienceTon Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Electrical and Electronics Engineering Ton Duc Thang UniversityHo Chi Minh CityVietnam

With the increase of high-power electrical components in modern ships,especially fully electric ships with electric propulsion drive(EPD),the cooling of EPD electrical components has become particularly *** optimal configurations for heat sinks with high thermal efficiency plays an essential role in this regard.A new technique for improving the efficiency of heat sinks is the utilization of perforated *** study examined the effects of perforation geometry(shape and size)on laminar airflow flow and heat transfer characteristics over a perforated plate-fin heat ***-dimensional simulations were conducted using the finite-volume scheme based on the SIMPLE *** this research,the effects of perforation shape and size on various parameters,e.g.,total drag force,average Nusselt number,perforated fin efficiency(PFE),heat transfer performance enhancement(HTPE),and fin optimization factor(η)were *** results confirmed that at a specific heat transfer surface area for perforated fins,the highest efficiency is achieved by circular *** contrast,the square perforations due to geometric similarity to rectangular fins could reach the maximum ***,fins with square perforations could achieve the most optimal ***,results showed that for a constant perforations size,change in perforations shape improves HTPE,PFE,andηby more than 40%,45%,and 110%,***,by modifying perforations size for a specified shape,an increment of more than 35%,40%,and 150%is observed in HTPE,PFE,andη,respectively.

关键词： Forced convection Laminar flow Perforated fin Plate-fin heat sink Nusselt number

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钟冠报春苣苔(苦苣苔科)的分类鉴定

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广西植物 2020年第10期40卷 1393-1401页

作者：洪欣 KEENE Jeremy 单皖粤 DO van truong 温放安徽大学资源与环境工程学院中国合肥230601 广西喀斯特植物保育与恢复生态学重点实验室广西壮族自治区中国科学院广西植物研究所中国广西桂林541000 格伦威尔州立大学美国西弗吉尼亚州格伦威尔市越南国家自然博物馆越南科学技术研究院越南河内10072 中国科学院华南植物园植物资源保护与可持续利用重点实验室中国广州510650 中国科学院桂林植物园中国苦苣苔植物保育中心中国广西桂林541006

原唇柱苣苔属(Chirita Buch.-Ham. ex D. Don)为一个人为界定的属,2011年在分子系统学研究的基础上对该属及其近缘属开展了系统发育重建工作,其中绝大部分的原唇柱苣苔属唇柱苣苔组(*** C. B. Clark)的物种被并入了广义报春苣苔属(Primu... 详细信息

原唇柱苣苔属(Chirita Buch.-Ham. ex D. Don)为一个人为界定的属,2011年在分子系统学研究的基础上对该属及其近缘属开展了系统发育重建工作,其中绝大部分的原唇柱苣苔属唇柱苣苔组(*** C. B. Clark)的物种被并入了广义报春苣苔属(Primulina Hance)。然而,由于历史原因和早期经典分类学在研究方法上的局限性以及对现报春苣苔属部分物种的营养器官与生殖器官的认知不够,该属下一些物种的分类仍存在一些问题,亟待深入研究。比如,在对中国和越南分布的苦苣苔科植物开展研究的过程中,作者发现两个报春苣苔属的物种——广布于中国西南和华南直至中南半岛中部的钟冠报春苣苔[Primulina swinglei (Merr.) Mich. MÖller&A. Weber]命名人和原被认为是中国与广西特有种的疏花报春苣苔[P. laxiflora(W. T. Wang) Yin. Z. Wang]之间的鉴定存在分类学问题,需要进一步厘清两者之间的关系。该文对这两个物种进行了形态比较,同时通过对这两种植物的原始描述对比、植物标本检查、栽培观察以及野外实地观察,确定疏花报春苣苔是钟冠报春苣苔的异名。此外,还明确了钟冠报春苣苔的后选指定模式标本。

关键词：唇柱苣苔属后选模式指定新异名疏花报春苣苔分类学

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Research on Using IMRT Plan for Preoperative Rectal Cancer Patients

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2020年第4期9卷 165-177页

作者： Quang Bui Vinh Soai Dang Quoc Cuong Bui Xuan Toan Hoang van truong Vu Radiotherapy Department Hanoi Oncology Hospital Hanoi Vietnam Medicinal Supplies-Medical Physics Division Hanoi Oncology Hospital Hanoi Vietnam

Aims: Research the possibility of using IMRT for rectal cancer patients in preoperative radiotherapy. Methods and Material: The research object is the preoperative radiotherapy plan for rectal cancer patients. The research group made two plans (IMRT, 3DCRT) for each image series of 34 rectal cancer patients who have received preoperative radiotherapy in Hanoi Oncology Hospital;and then compared the dose distribution on PTV, bladder, intestine, femoral bones, the average MU, and QA results of two types of plan. Results: The 95% isodose line and 50% isodose of IMRT plan are closer than those of 3DCRT plan. The average dose of PTV in IMRT plan and 3DCRT plan are 5006 ± 23 cGy and 5036 ± 42 cGy, respectively. The HTCI and HI values of IMRT and 3D plan are 0.97 ± 0.026 and 5.37 ± 1.32;1.00 ± 0.003 and 7.08 ± 0.88. About the dose of organ at risk: The maximum dose, average dose on the right, left femoral head in the IMRT plan are less than those values in the 3DCRT plan (6.2 Gy, 6 Gy, 7.4 Gy, 9 Gy, respectively). The maximum dose and average dose on the bladder of the IMRT plan are smaller than those values of the 3DCRT plan (5.3 Gy, 1.5 times, respectively). The maximum dose and average dose of intestine in the IMRT plan was less than those values in the 3DCRT plan (4.3 Gy, 1.54 times, respectively). The MU number of IMRT plan is 1.5 times bigger than that of 3DCRT plan. Gamma index of IMRT plan is better than that of 3DCRT plan (99% compared with 97%). Conclusions: Using IMRT plan in preoperative radiotherapy for rectal cancer patients can still ensure covered PTV as well as the 3D PLAN. Furthermore, the dose of PTV in the IMRT plan is more uniform than those in the 3D plan, and the dose effect on the OAR surrounding PTV is much lower than when using the 3D plan. When IMRT plan were used to treat the preoperative rectal cancer patients, the LINAC took more time than when using 3DCRT plan.

关键词： Rectal Cancer Preoperative Radiotherapy IMRT HI HTCI Gamma Index

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The Model of Integration of Traditional Medicine with Modern Medicine in Hospitals of Traditional Medicine in Vietnam:Present Status and Prospective Plan

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Chinese Journal of Integrative Medicine 2008年第3期14卷 228-231页

作者： CHU Quoc truong National Hospital of Traditional Medicine HanoiVietnam

Vietnam has a 4000-year old traditional system of pharmaco-medicine which was founded during the Hung King era （2879-257 B.C.）. Vietnamese traditional medicine （TM） came from the society and was developed during the long years of living, working and struggling for existence among the Vietnamese people among 54 ethnic groups under extremely severe natural conditions, conflicts, and interaction with local neighboring nations such as China, Laos, Cambodia, india, etc. All of those form the foundations to shape the diversity, abundance and specialty of Vietnamese TM. Valuable experiences in TM have been transmitted from generation to generation, which is an important part of Vietnamese culture.

关键词： The Model of Integration of Traditional Medicine with Modern Medicine in Hospitals of Traditional Medicine in Vietnam TM

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A comparative study of Salvia miltiorrhiza Radix & Rhizoma raw material and granule products using chromatographic analysis and antioxidant activity

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Journal of Traditional Chinese Medical Sciences 2022年第3期9卷 311-320页

作者： Xian Zhou Valentina Razmovski-Naumovski Raynold Mendoza John truong Kelvin Chan NICM Health Research Institute Western Sydney UniversityWestmead2145Australia South West Sydney Clinical Campuses Faculty of Medicine&HealthUniversity of New South WalesSydneyNSW2170Australia School of Pharmacy and Biomolecular Sciences Liverpool John Moores UniversityLiverpoolL33AFUK

Objective: Granules of herbal extracts are a popular medicinal preparation consumed in traditional Chinese medicine clinical practice. However, their quality and efficacy evaluation are lacking. This study aimed to compare the quality and anti-oxidant activity of Dan Shen(Salvia miltiorrhiza Radix & Rhizoma)granule extracts with their herbal ***: Chromatographic method was used to determine the content of 7 marker compounds in the water extracts of the herb compared to that of 12 granule extracts. Agglomerative hierarchical clustering(AHC) and principal component analysis(PCA) distinguished the herbal and granule extracts based on the content of the marker compounds. The antioxidant activities of herbal and granule extracts were evaluated by 2, 2'-azino-bis(3-ethylbenz-thiazoline-6-sulfonic acid)(ABTS), organic chemical compound 2,2-diphenyl-1-picrylhydrazyl(DPPH) and ferric ion reducing antioxidant power(FRAP) ***: The herbal extracts group showed significantly higher contents of salvianolic acid B, sodium danshensu and cryptotanshinone compared with that of the granule group. This corresponded to significantly higher ABTS, DPPH and FRAP(P <.05) activities of the herbal extracts. The AHC and PCA analysis distinguished granule extracts from most herbal extracts predominantly by the content of salvianolic acid ***: The results confirm the need for the assessment of granule products so that healthcare practitioners and consumers are better informed of their quality and efficacy.

关键词： Dan Shen Granule Multivariate analysis Salvia miltiorrhiza Radix&rhizoma Ultra-performance liquid chromatography Antioxidant

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First Record of Sphenomorphus incognitus (Thompson, 1912) (Squamata: Scincidae) from Vietnam with Some Notes on Natural History

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Asian Herpetological Research 2012年第2期3卷 147-150页

作者： truong Quang NGUYEN Tung Thanh TRAN Tao Thien NGUYEN Wolfgang BHME Thomas ZIEGLER Institute of Ecology and Biological Resources Vietnam Academy of Science and Technology Present address: Department of Terrestrial Ecology Cologne Biocenter University of Cologne Vinh Phuc College of Education 4. Vietnam National Museum of Nature Vietnam Academy of Science and Technology 5. Zoologisches Forschungsmuseum Alexander Koenig 6. AG Zoologischer Garten Kln

Sphenomorphus incognitus is recorded for the first time outside of China. The new locality record is from the Tay Yen Tu Nature Reserve in Bac Giang Province, northeastern Vietnam at elevations between 200–450 m. Based on the newly collected specimens, we present an expanded description and provide data on the natural history of this species in northern Vietnam.

关键词： new record Sphenomorphus incognitus Tay Yen Tu Nature Reserve Bac Giang Province Vietnam

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Indications for and techniques of keratoplasty at Vietnam National Institute of Ophthalmology

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International Journal of Ophthalmology(English edition) 2016年第3期9卷 379-383页

作者： Pham Ngoc Dong truong Nhu Han Anthony J.Aldave Hoang Thi Minh Chau Vietnam National Institute of Ophthalmology HanoiVietnam Stein Eye Institute the University of California Los Angeles CA 90095-7003 USA

AIM： To report the indications for and techniques of corneal transplantation at Vietnam National Institute of Ophthalmology （VNIO） over a period of 12y （2002-2013）, METHODS： Records of patients who had undergone corneal transplantation at VNIO from January 1, 2002 to January 1, 2014 were reviewed to determine the indication for and type of corneal transplant performed. Patient age, gender, indication for corneal transplantation and surgical technique were recorded and analyzed. RESULTS： Corneal transplantation were underwent in 1390 eyes of 1278 patients with a mean age of 44.9±18.1y during the period under review. The most common indication was infectious corneal ulcer （n=670; 48.2%）, followed by corneal scar （n=333, 24.0% ）, corneal dystrophy （n=138, 9.9%） and failed graft （n=112, 8.1%）. Nearly all procedures performed were penetrating keratoplasty （n=1300, 93.5% ）, with a few lamellar keratoplasty procedures performed： lamellar keratoplasty （n=52, 3.7%）, Descemet＇s stripping automated endothelial keratoplasty （n =27, 1.9% ） and deep anterior lamellar keratoplasty （n =11, 0.8%）.CONCLUSION： While the most common indication for keratoplasty was infectious keratitis, nearly all indications for corneal transplantation were managed with penetrating keratoplasty, However, lamellar keratoplasty techniques, including deep anterior lamellar keratoplasty and Descemet＇s stripping automated endothelial keratoplasty, are being performed with increasing frequency for isolated stromal and endothelial disorders, respectively,

关键词： penetratingkeratoplasty, lamellarkeratoplasty endothelial keratoplasty indication for keratoplasty technique of keratoplasty

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