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Hepatoma Research 2020年第8期6卷 36-45页

作者： bui quang bieu Nguyen Dinh Chau Nguyen Xuan Kien Le Van Thanh Vu Van quang Thai Doan Ky Nguyen Tien Thinh Mai Hong Bang Department of Radiation Oncology and Radiosurgery Military Central Hospital 108Hanoi 100000Vietnam Department of Hepatobiliary and Pancreatic Surgery Military Central Hospital 108Hanoi 100000Vietnam Department of Gastroenterology and Hepatobiliary Military Central Hospital 108Hanoi 100000Vietnam.

Liver transplant(LT)is the curative treatment for patients with hepatocellular carcinoma(HCC).Bridge therapies are local treatments given to patients on the LT waitlist,to prevent tumor progression and to reduce the dropout *** presentation:We reported a 40-year-old man diagnosed with Barcenola-Clinic Liver Cancer BCLC intermediate stage HCC and Child-Pugh A5 hepatitis B virus cirrhosis who underwent combined bridge therapies to ***,the patient received transarterial chemoembolization(TACE)for two times and showed a partial *** he underwent stereotactic body radiation therapy(SBRT)with a total dose of 45 Gy in 3 *** months later,the tumor size and serum protein induced by Vitamin K absence or antagonists-II,alpha fetoprotein levels decreased *** June 2019 a suitable donor was found and his LT was successfully ***:We propose that a combination of TACE and SBRT was feasible as bridge therapy for HCC patients on the LT waitlist.

关键词： Transarterial chemoembolization stereotactic body radiation therapy bridge therapy hepatocellular carcinoma liver transplant

Photocatalytic degradation of antibiotic sulfamethizole by visible light activated perovskite LaZnO_(3)

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Journal of Environmental Sciences 2024年第10期144卷 212-224页

作者： bui The Huy XCuong Nguyen Vu Khac Hoang bui Nguyen Ngoc Tri Iqra Rabani Nhu Hoa Thi Tran quang Viet Ly Hai Bang Truong Major of Biomedical Engineering Division of Smart HealthcareCollege of Information Technology and ConvergencePukyong National UniversityBusan 48513Korea Center for Advanced Chemistry Institute of Research and DevelopmentDuy Tan UniversityDa Nang 550000Viet Nam Faculty of Environmental and Chemical Engineering Duy Tan UniversityDa Nang 550000Viet Nam Department of Environment and Energy Sejong UniversitySeoul 05006Korea Lab of Computational Chemistry and Modelling Department of ChemistryFaculty of Natural SciencesQuy Nhon UniversityQuy NhonViet Nam Department of Nanotechnology and Advanced Materials Engineering Sejong UniversitySeoul 05006Korea Faculty of Materials Science and Technology University of ScienceHo Chi Minh City 700000Viet Nam Vietnam National University Ho Chi Minh City 700000Viet Nam Department of Environmental Engineering Seoul National University of Science and TechnologySeoul 01811Korea Optical Materials Research Group Science and Technology Advanced InstituteVan Lang UniversityHo Chi Minh CityViet Nam Faculty of Applied Technology School of TechnologyVan Lang UniversityHo Chi Minh CityViet Nam

In thiswork,the perovskite LaZnO_(3) was synthesized via sol-gel method and applied for photocatalytic treatment of sulfamethizole(SMZ)antibiotics under visible light *** was almost completely degraded(99.2%±0.3%)within 4 hr by photocatalyst LaZnO3 at the optimal dosage of 1.1 g/L,with amineralization proportion of 58.7%±0.4%.The efficient performance of LaZnO_(3) can be attributed to itswide-range light absorption and the appropriate energy band edge levels,which facilitate the formation of active agents such as·O_(2)^(−),h^(+),and·*** integration of RP-HPLC/Q-TOF-MS and DFT-based computational techniques revealed three degradation pathways of SMZ,which were initiated by the deamination reaction at the aniline ring,the breakdown of the sulfonamidemoieties,and a process known as Smile-type rearrangement and SO2 *** toxicity of SMZ and the intermediateswere analyzed by quantitative structure activity relationship(QSAR),indicating the effectiveness of LaZnO_(3)-based photocatalysis in preventing secondary pollution of the intermediates to the ecosystem during the degradation *** visible-light-activated photocatalyst LaZnO_(3) exhibited efficient performance in the occurrence of inorganic anions and maintained high durability across multiple recycling tests,making it a promising candidate for practical antibiotic treatment.

关键词： Perovskite Antibiotics Photocatalysis Density functional theory Toxicity

Novel Soft ComputingModel for Predicting Blast-Induced Ground Vibration in Open-Pit Mines Based on the Bagging and Sibling of Extra Trees Models

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Computer Modeling in Engineering & Sciences 2023年第3期134卷 2227-2246页

作者： quang-Hieu Tran Hoang Nguyen Xuan-Nam bui Department of Surface Mining Mining FacultyHanoi University of Mining and GeologyHanoi100000Vietnam Innovations for Sustainable and Responsible Mining(ISRM)Research Group Hanoi University of Mining and GeologyHanoi100000Vietnam

This study considered and predicted blast-induced ground vibration(PPV)in open-pit mines using bagging and sibling techniques under the rigorous combination of machine learning ***,four machine learning algorithms,including support vector regression(SVR),extra trees(ExTree),K-nearest neighbors(KNN),and decision tree regression(DTR),were used as the base models for the purposes of combination and PPV initial *** bagging regressor(BA)was then applied to combine these base models with the efforts of variance reduction,overfitting elimination,and generating more robust predictive models,abbreviated as BA-ExTree,BAKNN,BA-SVR,and *** is emphasized that the ExTree model has not been considered for predicting blastinduced ground vibration before,and the bagging of ExTree is an innovation aiming to improve the accuracy of the inherently ExTree model,as *** addition,two empirical models(i.e.,USBM and Ambraseys)were also treated and compared with the bagging models to gain a comprehensive *** this aim,we collected 300 blasting events with different parameters at the Sin Quyen copper mine(Vietnam),and the produced PPV values were also *** were then compiled as the dataset to develop the PPV predictive *** results revealed that the bagging models provided better performance than the empirical models,except for the BA-DTR *** those,the BA-ExTree is the best model with the highest accuracy(i.e.,88.8%).Whereas,the empirical models only provided the accuracy from 73.6%–76%.The details of comparisons and assessments were also presented in this study.

关键词： Mine blasting blast-induced ground vibration environmentally friendly blasting peak particle velocity bagging extra trees

Seroprotection after hepatitis B vaccination amongst infants aged between 12 and 24 months in Ho Chi Minh City, Vietnam

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Asian Pacific Journal of Tropical Medicine 2020年第7期13卷 295-300页

作者： Giao Huynh quang Vinh bui Ngoc Lan Nguyen Le An Pham Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Department of Pediatrics University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Department of Microbiology and Parasitology University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Center for training of Family Medicine University of Medicine and Pharmacy at Ho Chi Minh City Vietnam

Objective:To assess levels of HBs Ab amongst infants who received hepatitis B vaccine in the Expanded Program on Immunization in ***:A cross-sectional study was carried out at 16 community health centers from February 2016 to July *** infants were tested for HBs Ab and HBs *** questionnaires were used to collect relevant information about the demographics of the parents/caregivers and their infants after physical ***:A total of 199 eligible infants were selected with a mean age of(17.3±4.5)*** antibody levels with HBs Ab≥10 m IU/m L were detected in 68.3%of *** these,antibody levels from 10 to 99 m IU/m L were 48.5%of those tested and antibody levels≥100 ml U/m L were recorded as 51.5%.No cases were recorded of being infected with hepatitis B *** rate of positive HBs Ab level in those who were not wasting and≥18 months old was less than that among those who were<18 months old(OR 0.49,95%CI:0.26-0.92,P<0.05)while the infants with wasting and<18 months were less likely to be positive HBs Ab than those who were not wasting and of the same age group(OR 0.15,95%CI:0.04-0.55,P<0.05).Conclusions:Seroprotection against hepatitis B virus was low in the infants tested(at 68.3%),which suggests that the hepatitis B vaccine should be administered with one additional dose for infants between 12 and 24 months of age,particularly those with wasting.

关键词： Hepatitis B virus Hepatitis B Vaccine Vaccination Expanded Program on Immunization

Buckling Analysis of FG Porous Truncated Conical Shells Resting on Elastic Foundations in the Framework of the Shear Deformation Theory

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Advances in Applied Mathematics and Mechanics 2022年第1期14卷 218-247页

作者： Le Kha Hoa bui Gia Phi Do quang Chan Dang Van Hieu Military Academy of Logistics HanoiVietnam Department of Technical Fundamental University of Transport Technology54 Trieu Khuc9 Thanh XuanHanoiVietnam Department of Mechanical Engineering and Mechatronics PHENIKAA UniversityHanoi 12116Vietnam PHENIKAA Research and Technology Institute(PRATI) A&A Green Phoenix Group JSCNo.167 Hoang NganTrung HoaCau GiayHanoi 11313Vietnam Thainguyen University of Technology ThainguyenVietnam

In this article,an analytical method is proposed to analyze of the linear buckling behavior of the FG porous truncated conical shells subjected to a uniform axial compressive load and resting on the Pasternak elastic *** material properties including Young’s modulus,shear modulus and density are assumed to vary in the thickness *** types of FG porous distributions including symmetric porosity distribution,non-symmetric porosity and uniform porosity distribution are *** governing equations of the FG porous truncated conical shells are obtained by using the first-order shear deformation theory(FSDT).With the help of the Galerkin method,the expressions for critical buckling loads are obtained in closed *** reliability of the obtained results is verified by comparing the present solutions with the published ***,the numerical results show the effects of shell characteristics,porosity distribution,porosity coefficient,and elastic foundation on the critical buckling load.

关键词： Buckling truncated conical shells first order shear deformation theory porous materials elastic foundations

How knowledge of hepatitis B disease and vaccine influences vaccination practices among parents in Ho Chi Minh City, Vietnam

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Asian Pacific Journal of Tropical Medicine 2021年第3期14卷 122-127页

作者： Giao Huynh Le An Pham Thien Thuan Tran Ngoc Nga Cao Thi Ngoc Han Nguyen quang Vinh bui Faculty of Public Health University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Center for Training of Family Medicine University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Department of Infectious Diseases University of Medicine and Pharmacy at Ho Chi Minh CityVietnam Infection Control Department University Medical Center at Ho Chi Minh CityVietnam Department of Pediatrics University of Medicine and Pharmacy at Ho Chi Minh CityVietnam

Objective:To assess the influences of the knowledge of parents about hepatitis B virus(HBV)infection and the benefit of HBV vaccination on the practice of HBV vaccination among ***:A prospective cross-sectional study recruited parents whose children,aged 12-24 months,received HBV vaccination at Commune Health Centers(CHCs)in Ho Chi Minh City from Feb.2016 to *** were interviewed using a questionnaire that included 11-item binary knowledge questions and checked their children’s vaccination ***:A total of 768 parents had a mean age of(30.8±5.1)*** mean knowledge score of the 11-item questions was(7.0±2.4).The knowledge score was positively associated with full and timely HBV *** addition,children who received complete and timely HBV vaccination were significantly more likely to live in rural areas(Adjusted OR 4.02,95%CI 2.79-5.79,P<0.001).Also,children whose parents received vaccination information from health care providers,and had knowledge about HBV risk,had a higher rate of full and timely HBV vaccination(Adjusted OR 1.60,95%CI 1.13-2.29,and Adjusted OR 1.47,95%CI 1.01-2.13,P all<0.05).Conclusions:Parents possessed a great deal of incorrect knowledge about *** health education from health care providers should target parents living in specific locations and focus on the benefits of HBV vaccine.

关键词： Knowledge Hepatitis Health Belief Model Vaccination Questionnaire

Hybrid model to optimize object-based land cover classification by meta-heuristic algorithm:an example for supporting urban management in Ha Noi,Viet Nam

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International Journal of Digital Earth 2019年第10期12卷 1118-1132页

作者： quang-Thanh bui Manh Pham Van Nguyen Thi Thuy Hang Quoc-Huy Nguyen Nguyen Xuan Linh Pham Minh Hai Tran Anh Tuan Pham Van Cu Center for Applied Research in Remote sensing and GIS(CARGIS) VNU University of ScienceHa NoiViet Nam VNU University of Science Ha NoiViet Nam Vietnam Institute of Geodesy and Cartography Ha NoiViet Nam Ministry of Education and Training Ha NoiViet Nam

This study proposed a novel object-based hybrid classification model named GMNN that combines Grasshopper Optimization Algorithm(GOA)and the multiple-class Neural network(MNN)for urban pattern detection in Hanoi,*** bands of SPOT 7 image and derivable NDVI,NDWI were used to generate image segments with associated attributes by PCI Geomatics *** segments were classified into four urban surface types(namely water,impervious surface,vegetation and bare soil)by the proposed ***,three training and validation datasets of different sizes were used to verify the robustness of this *** all tests,the overall accuracies of the classification were approximately 87%,and the Area under Receiver Operating Characteristic curves for each land cover type was ***,the performance of this model was examined by comparing several statistical indicators with common benchmark *** results showed that GMNN out-performed established methods in all comparable *** results suggested that our hybrid model was successfully deployed in the study area and could be used as an alternative classification method for urban land cover *** a broader sense,classification methods will be enriched with the active and fast-growing contribution of metaheuristic algorithms.

关键词： Urban remote sensing object-based classification neural network grasshopper optimization algorithm

基于基因表达编程和粒子群优化鲁棒混合计算模型的深部地下矿井岩爆分类

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土木与环境工程学报（中英文） 2023年第2期45卷 21-38页

作者： TRAN quang-Hieu bui Xuan-Nam NGUYEN Hoang Department of Surface Mining Mining Faculty/Innovations for Sustainable and Responsible Mining(ISRM)Research GroupHanoi University of Mining and GeologyHanoi 100000Vietnam

在深部地下采矿中,岩爆因具有许多不利影响(如对人员、设备、隧道/地下矿山工作面和开采周期等的影响)而被视为不确定性风险。由于其不确定性的特征,对岩爆趋势的准确预测和分类具有一定难度,且已有研究成果较少。提出一种基于基因表达... 详细信息

在深部地下采矿中,岩爆因具有许多不利影响(如对人员、设备、隧道/地下矿山工作面和开采周期等的影响)而被视为不确定性风险。由于其不确定性的特征,对岩爆趋势的准确预测和分类具有一定难度,且已有研究成果较少。提出一种基于基因表达编程(GEP)和粒子群优化(PSO)的鲁棒混合计算模型GEP-PSO,用于预测和分类深部开口的岩爆趋势,提高了预测和分类的准确性。在建立GEP-PSO模型的过程中,评估GEP模型中不同数量的基因(1~4)和连接功能(例如,加法、提取、乘法和除法)。收集246次岩爆发生的地质和施工因素,用于建立岩爆分类的GEP-PSO模型;应用处理数据集缺失值的技术改进数据集的属性;用相关矩阵选取潜在输入参数的特征;建立13个混合GEP-PSO模型,得到各模型的精度。结果表明:在GEP结构中具有3个基因和乘法连接函数的GEP-PSO模型具有最高的准确度(80.49%)。将获得的最佳GEP-PSO模型的结果与基于相同数据集开发的各种已有模型进行比较,结果表明,选择的GEP-PSO模型结果优于已有模型,表明提出的GEP-PSO模型在岩爆等级的预测和分类方面的准确性显著提高,可以应用于深开挖工程中,以准确预测和评估岩爆敏感性。

关键词：岩爆 GEP-PSO模型地下采矿深开挖风险评估

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中越贸易对越南经济增长的影响研究

中越贸易对越南经济增长的影响研究

作者： bui QUOC quang（裴国光）湖南大学

学位级别：硕士

随着全球经济一体化的快速发展,不同区域之间开展对外贸易,从而促进区域内经济增长,已经成为世界经济发展的趋势之一。几乎所有国家的对外贸易都是其经济组成的重要部分,也是促进国家经济发展的重要推手。越南作为中国重要的进出口国家... 详细信息

随着全球经济一体化的快速发展,不同区域之间开展对外贸易,从而促进区域内经济增长,已经成为世界经济发展的趋势之一。几乎所有国家的对外贸易都是其经济组成的重要部分,也是促进国家经济发展的重要推手。越南作为中国重要的进出口国家之一,中越之间的贸易对于越南经济发展具有十分重要的促进作用。中越开展对外贸易,不仅能够有效的平衡越南不同地区经济差异,增加就业人口,也能够通过双边贸易关系,弥补越南经济的不足之处,满足越南国内消费。为此,研究中越贸易及其对越南经济增长的影响,对于促进越南经济的平稳有序发展具有重要作用。本文基于国际贸易的相关经济学理论,在国内外已有相关研究的基础上,实证研究中越贸易对于越南经济增长的影响。通过中越贸易现状分析可以看出,目前中越贸易存在越南出口产品缺乏竞争力、双方进出口口岸的基础条件落后、中越边境依旧存在小规模走私活动等问题。在进一步结合中越两国2001-2020年贸易进出口额等数据,并结合越南居民消费支出、GDP以及政府相应支出作为衡量越南经济发展的变量,运用计量经济方法建立回归模型,研究中越两国之间的双边贸易对越南经济增长的影响程度及方向。实证结果表明:越南面向中国的进、出口贸易,对该国的经济增长具有正向促进作用。相较于进口贸易,出口贸易对越南经济增长的贡献作用更大。具体地,进口贸易每增加1%,越南GDP将会出现0.1848%的增长;而出口每增加1%,该国的GDP增幅将达到0.7207%。在机制分析与实证研究的基础上,文章提出需要引导中国跨国公司参与越南投资、提升越南出口中国货物品质、调整越南产业机构及贸易结构、改善边境贸易问题等政策建议。

关键词：中越贸易越南经济增长越南对外贸易

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