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| 1 | Behavior of noncircular tunnels excavated in stratified rock masses-Case of underground coal mines显示文摘The amount of tunnels excavated along stratified/sedimentary rock masses in Quangninh coal mine area,Vietnam, is gradually increasing. Rock mass in Quangninh is characterized by beddings between rock layers. The behavior of stratified rock masses surrounding the tunnels depends on both the intact rock and the beddings between rock layers. The main characteristics of stratified rock masses that need to be considered are their heterogeneity and anisotropy. Depending on the dip angle of rock layers, movements and failure zones developed surrounding the tunnels can be asymmetrical over the vertical axis of tunnel. This asymmetry causes adverse behaviors of the tunnel structures. The objective of this study is to highlight convergences and yielded zones developed in rock masses surrounding noncircular tunnels in Quangninh coal mine area using a finite element method. The presence of bedding joints is explicitly simulated. The numerical results indicated that with the increase in dip angle of bedding joints, the stress asymmetry over the tunnel vertical axis increases. It gradually leads to an asymmetry of the failure zone surrounding the tunnel. An increase of rock mass quality means a decrease of rock mass sensitivity to the discontinuities. In addition,a dip angle of the bedding joints of approximately 45° could be considered as the critical angle at which the rock mass mechanism changes between sliding and bending. | Ngoc Anh Do Daniel Dias Van Diep Dinh Tien Tung Tran Van Canh Dao Viet Doan Dao Phuc Nhan Nguyen | 2019 | Journal of Rock Mechanics and Geotechnical Engineering2019，11，1： | 9 |
| 2 | 曝气结合投加微生物法去除河水氨氮效果研究显示文摘指出了传统河道曝气技术能在短时间内提高水体溶解氧浓度、消除河道黑臭状态,在河道水质改善方面具有一定的可行性和优越性。基于此,尝试将投加微生物工程菌法与河道曝气技术有机结合,研发了去除河水中COD和NH_3-N的长期效果更好的组合工艺。以新河支流水生态修复项目为例,研究表明:投加微生物工程菌法与河道曝气技术对水去除COD、NH_3-N与增加微生物群落的效果显著。 | Tang Van Tai Tran Ngoc Binh Nguyen Nhu Anh PhanThi Hong Nhung | 2017 | 绿色科技2017，19，6： | 8 |
| 3 | Stem cell-based therapy for human diseases显示文摘Recent advancements in stem cell technology open a new door for patients suffering from diseases and disorders that have yet to be treated.Stem cell-based therapy,including human pluripotent stem cells(hPsCs)and multipotent mesenchymal stem cells(MSCs),has recently emerged as a key player in regenerative medicine.hPSCs are defined as self-renewable cell types conferring the ability to differentiate into various cellular phenotypes of the human body,including three germ layers.MsCs are multipotent progenitor cells possessing self-renewal ability(limited in vitro)and differentiation potential into mesenchymal lineages,according to the International Society for Cell and Gene Therapy(ISCT).This review provides an update on recent clinical applications using either hPSCs or MSCs derived from bone marrow(BM),adipose tissue(AT),or the umbilical cord(UC)for the treatment of human diseases,including neurological disorders,pulmonary dysfunctions,metabolic/endocrine-related diseases,reproductive disorders,skin burns,and cardiovascular conditions.Moreover,we discuss our own clinical trial experiences on targeted therapies using MsCs in a clinical setting,and we propose and discuss the MSC tissue origin concept and how MSC origin may contribute to the role of MSCs in downstream applications,with the ultimate objective of facilitating translational research in regenerative medicine into clinical applications.The mechanisms discussed here support the proposed hypothesis that BM-MSCs are potentially good candidates for brain and spinal cord injury treatment,AT-MSCs are potentially good candidates for reproductive disorder treatment and skin regeneration,and UC-MsCs are potentially good candidates for pulmonary disease and acute respiratory distress svndrometreatment. | Duc M.Hoang Phuong T.Pham Trung Q.Bach Anh T.L.Ngo Quyen T.Nguyen Trang T.K.Phan Giang H.Nguyen Phuong T.T.Le Van T.Hoang Nicholas R.Forsyth Michael Heke Liem Thanh Nguyen | 2022 | Signal Transduction and Targeted Therapy2022，7，9： | 7 |
| 4 | Numerical analysis of plasma arc physical characteristics under additional constraint of keyhole显示文摘The physical characteristics of a plasma arc affect the stability of the keyhole and weld pool directly during keyhole plasma arc welding(KPAW). There will be significant change for these characteristics because of the interaction between the keyhole weld pool and plasma arc after penetration. Therefore, in order to obtain the temperature field, flow field, and arc pressure of a plasma arc under the reaction of the keyhole, the physical model of a plasma arc with a pre-set keyhole was established. In addition, the tungsten and base metal were established into the calculated domain, which can reflect the effect of plasma arc to weld pool further. Based on magneto hydrodynamics and Maxwell equations, a two-dimensional steady state mathematical model was established. Considering the heat production of anode and cathode, the distribution of temperature field, flow field, welding current density, and plasma arc pressure were solved out by the finite difference method. From the calculated results, it is found that the plasma arc was compressed a second time by the keyhole. This additional constraint results in an obvious rise of the plasma arc pressure and flow velocity at the minimum diameter place of the keyhole, while the temperature field is impacted slightly. Finally, the observational and metallographic experiments are conducted, and the shapes of plasma arc and fusion line agree with the simulated results generally. | 徐斌 蒋凡 陈树君 田中学 田代真一 Nguyen Van Anh | 2018 | Chinese Physics B2018，27，3： | 4 |
| 5 | Structural and luminescent properties of (Eu,Tb) PO_4·H_2O nanorods/nanowires prepared by microwave technique显示文摘Nanowires/nanorods of europium/terbium orthophosphate monohydrate with Eu3+ concentration of 6,11,and 20 at.% were prepared by microwave synthesis method.The effects of Eu3+ doping concentration on structure,morphology and optical properties of nanoma-terials were also investigated.The results showed that,for all studied Eu3+ doping concentrations,a single-crystalline phase of rhabdo-phane-type(Eu,Tb) PO4·H2O nanowires/nanorods was obtained by using microwave heating of an aqueous solution of terbium(III) nitrate,europium(III) nitrate and NH4H2PO4 with pH=2.The length and width of these nanowires/nanorods ranged from 150 to 300 nm and from 10 to 50 nm,respectively.The evidence of energy transfer from Tb3+ to Eu3+ due to the energy overlap between the donor Tb3+ and the acceptor Eu3+ was observed obviously via a significant enhancement in the luminescent intensity of Eu3+. | Nguyen Thanh Huong Nguyen Duc Van Dinh Manh Tien Do Khanh Tung Nguyen Thanh Binh Tran Kim Anh Le Quoc Minh | 2011 | Journal of Rare Earths2011，29，12： | 2 |
| 6 | Upconversion luminescence of Gd2O3:Er3+and Gd2O3:Er3+/silica nanophosphors fabricated by EDTA combustion method显示文摘Gd2O3:Er^3+nanophosphors were fabricated by the combustion method in presence of Na2 ethylene diamine tetra acetic acid(EDTA-Na2)as fuel at not high temperature(≤350℃)within a very short time of 5 min.The added concentration of Er^3+ions in Gd2O3 matrix was changed from 0.5 mol%to 5.0 mol%.The X-ray diffraction pattern of samples indicates the monoclinic structure of Gd2O3:Er^3+.The morphology and chemical composition analysis of the Gd2O3:Er^3+samples are characterized by a field emission scanning electron microscope(FESEM)and a Fourier-transform infrared spectrometer(FTIR).The photoluminescence(PL),photo luminescence excitation(PLE)and upconversion(UC)at room temperature of the prepared materials with different concentrations of Er^3+were investigated.The PL of Gd2O3:Er^3+nanomaterials are shown in visible at 545,594,623,648,688 nm under excitation at 275 nm.The emission bands from transitions of Er^3+from 2P3/2 to 4F9/2 are observed,UC luminescent spectra of the Gd2O3:Er^3+/silica nanocomposites under 976 nm excitation show the bands at 548 and 670 nm.The influence of excitation power at 980 nm for transitions were measured and calculated.The results indicate that the upconversion process of Gd2O3:Er^3+/silica is two photons absorption mechanism.The low temperature dependence of UC luminescent intensities of the main bands of Gd2O3:Er^3+was investigated towards development of a nanotemperature sensor in the range of 10-300 K. | Le Quoc Minh Tran Kim Anh Nguyen Duy Hung Pham Thi Minh Chau Nguyen Thi Quy Hai Ho Van Tuyen Vu Thi Thai Ha Vu Duc Tu Wieslaw Strek | 2019 | Journal of Rare Earths2019，37，11： | 2 |
| 7 | Ecoregional variations of aboveground biomass and stand structure in evergreen broadleaved forests显示文摘Biotic and abiotic factors control aboveground biomass(AGB)and the structure of forest ecosystems.This study analyses the variation of AGB and stand structure of evergreen broadleaved forests among six ecoregions of Vietnam.A data set of 1731-ha plots from 52 locations in undisturbed old-growth forests was developed.The results indicate that basal area and AGB are closely correlated with annual precipitation,but not with annual temperature,evaporation or hours of sunshine.Basal area and AGB are positively correlated with trees>30 cm DBH.Most areas surveyed(52.6%)in these old-growth forests had AGB of 100–200 Mg ha^-1;5.2%had AGB of 400–500 Mg ha^-1,and 0.6%had AGB of>800 Mg ha^-1.Seventy percent of the areas surveyed had stand densities of 300–600 ind.ha^-1,and 64%had basal areas of 20–40 m^2 ha^-1.Precipitation is an important factor influencing the AGB of old-growth,evergreen broadleaved forests in Vietnam.Disturbances causing the loss of large-diameter trees(e.g.,>100 cm DBH)affects AGB but may not seriously affect stand density. | Tran Van Do Mamoru Yamamoto Osamu Kozan Vo Dai Hai Phung Dinh Trung Nguyen Toan Thang Lai Thanh Hai Vu Thanh Nam Trieu Thai Hung Hoang Van Thang Tran Duc Manh Cao Chi Khiem Vu Tien Lam Nguyen Quang Hung Tran Hoang Quy Pham Quang Tuyen Trinh Ngoc Bon Nguyen Thi Thu Phuong Ninh Viet Khuong Nguyen Van Tuan Dang Thi Hai Ha Tran Hai Long Dang Van Thuyet Dang Thinh Trieu Nguyen Van Thinh Tran Anh Hai Duong Quang Trung Nguyen Van Bich Dinh Hai Dang Pham Tien Dung Nguyen Huy Hoang Le Thi Hanh Phan Minh Quang Nguyen Thi Thuy Huong Hoang Thanh Son Nguyen Thanh Son Nguyen Thi Van Anh Nguyen Thi Hoai Anh Pham Dinh Sam Hoang Thi Nhung Hoang Van Thanh Nguyen Huu Thinh Tran Hong Van Ho Trung Luong Bui Kieu Hung | 2020 | Journal of Forestry Research2020，31，5： | 1 |
| 8 | Experimental alcohol-related peripheral neuropathy- role of in- s ulin/IGF resistance 显示文摘 | Van Anh Nguyen Tran Le Tong M | 2012 | J Nutrients2012，4，8： | 1 |
| 9 | 城市湖泊生态改造设计显示文摘转通湖泊驳岸技术是使用混凝土和浆砌石材料来建造硬质直立式驳岸结构为达到固土目标,但是硬化混凝土驳岸系统已经破坏了湖泊水生态和自然景观。湖泊生态化改造是通过土木工程结合生态技术,强化湖泊的自身防止污染功能,同时提高了湖泊生态多样性及水体自能力[1]。该研究通过调研越南荣市气候、环境特点与南湖污染现状,提出了湖泊驳岸生态化改造设计方案。 | Tang Van Tai Tran Ngoc Binh Nguyen Nhu Anh Phan Hong Nhung | 2016 | 安徽农学通报2016，22，23： | 1 |
| 10 | Study of vertically ascending flight of a hawkmoth model显示文摘This paper provides insight into the wing kinematics,the power requirement and the dynamic stability characteristics of a hawkmoth model in vertically ascending flight.The wing kinematics of the hawkmoth model is obtained based on the minimum required power assumption.The optimization process is conducted using genetic and simplex algorithms that are coupled with an artificial neural network to rapidly predict the aerodynamic force and required power.The training data for the neural network are generated from an unsteady vortex-lattice method.Compared to hover,the results in this study show the larger flapping frequency and the smaller rotation amplitude of the hawkmoth wing kinematics in ascending flight.Additionally,more power is required when the ascending speed increases.While conducting a dynamic modal analysis based on a cycle-average approach,the certain effect of the ascending speed on the modal structures of the hawkmoth model was observed. | Anh Tuan Nguyen Vu Dan Thanh Le The Hung Tran V.N.Due Van Binh Phung | 2020 | Acta Mechanica Sinica2020，36，5： | 1 |
| 11 | Cytochemical features of shrimp haemocytes 显示文摘 | Hose J E Martin G G Van Anh Nguyen J L | 1987 | Biological Bulletin1987，173，： | 1 |
| 12 | Cytochemical features of shrimp haemocytes 显示文摘 | Hose J E Martin G G van Anh Nguyen J L | 1987 | Biol Bull1987，173，： | 1 |
| 13 | Inhibitors of osteoclastogenesis from Lawsonia inermis leaves显示文摘 | Nguyen Xuan Cuong Nguyen Xuan Nhiem Nguyen Phuong Thao Nguyen Hoai Nam Nguyen Tien Dat Hoang Le Tuan Anh Le Mai Huong Phan Van Kiem Chau Van Minh Ji-Hee Won Won-Yoon Chung Young Ho Kim | 2010 | Bioorganic & Medicinal Chemistry Letters2010，，16： | 1 |
| 14 | Contamination of groundwater and risk assessment for arsenic exposure in Ha Nam province,Vietnam显示文摘 | Van Anh Nguyen Sunbaek Bang Pham Hung Viet | 2009 | Environment International2009，35，： | 1 |
| 15 | Compensation of Zn substitution and secondary phase controls effective mass and weighted mobility in In and Ga co-doped ZnO material显示文摘Conductivity s and thermal conductivity k are directly related to carrier concentration while Seebeck coefficient S is inversely proportional to carrier concentration.Therefore,improving thermoelectric(TE)performance is challenging.Here,the first-time analysis of secondary phase-controlled TE performance in terms of density-of-state effective mass m*d,weighted mobility mw and quality factor B is discussed in ZnO system.The results show that the secondary spinel phase Ga2O_(3)(ZnO)9 not only impacts on k but also on s and S at high temperature,while the effect of carrier concentration seem to be dominant at low temperature.For the high-spinel-segregation sample,a compensation of dopant atoms from the spinel to substitutional sites in the ZnO matrix at high temperature leads to a low decreased rate of temperaturedependent m*d.The compensation process also induces a band sharpening,a small mw reduction,and a large B enhancement.As a result,In and Ga co-doped ZnO bulk with the highest spinel segregation achieves the greatest PF improvement by 112.8%,owing to enhanced Seebeck coefficient by 110%as compared to the good Zn-substitution sample. | Oanh Kieu Truong Le Anh Tuan Thanh Pham Ngoc Kim Pham Trang Huyen Cao Pham Truong Huu Nguyen Dung Van Hoang Hanh Kieu Thi Ta Dai Cao Truong Hoa Thi Lai Thuy Dieu Thi Ung Vinh Cao Tran Thang Bach Phan | 2021 | Journal of Materiomics2021，7，4： | 0 |
| 16 | First Records of Megophrys daweimontis Rao and Yang, 1997 and Amolops vitreus(Bain, Stuart and Orlov, 2006)(Anura: Megophryidae, Ranidae) from Vietnam显示文摘Two amphibian species, Megophrys daweimontis and Amolops vitreus, are recorded for the first time from Vietnam, on the basis of a new amphibian collection from Dien Bien and Son La provinces. In addition, acoustic analysis of A. vitreus is also provided based on the advertisement calls recorded in Muong Nhe Nature Reserve of Dien Bien Province, Vietnam. | Dzung Trung LE Anh Van PHAM Son Hung Lan NGUYEN Thomas ZIEGLER Truong Quang NGUYEN | 2015 | Asian Herpetological Research2015，6，1： | 0 |
| 17 | 垂直绿化综合效应研究显示文摘除了美观上的效果,垂直绿化缓解热岛效应,减少水土流失,防尘减噪,节能环保,延长建筑寿命等作用也被越来越多的人意识到,有关垂直绿化各方面定性的研究也不断得到开展。以南京的三种墙面绿化形式—攀援式墙面绿化、铺贴式墙面绿化和组合移动式墙面绿化作为研究对象,通过测定垂直绿化的降温、减噪和心理效应探讨垂直绿化对建筑环境的综合影响。 | Tang Van Tai Tran Ngoc Binh Nguyen Nhu Anh Phan Hong Nhung | 2017 | 黑龙江生态工程职业学院学报2017，30，4： | 0 |
| 18 | Applied Biofloc Technology for Target Species in the Mekong Delta in Vietnam: A Review显示文摘 | Nguyen Van Hoa Ta Van Phuong Tran Ngoc Hai Chau Tai Tao Le Quoc Viet Nguyen Thi Hong Van Huynh Thanh Toi Tran Huu Le Vo Nam Son Pham Quoc Anh Duy | 2017 | Journal of Environmental Science and Engineering(B)2017，6，4： | 0 |
| 19 | Gravitationally lensed extended sources: the case of QSO RXJ0911显示文摘After a brief reminder of the mechanism of gravitational lensing of extended sources, the particular case of the host galaxy of QSO RXJ0911, a high redshift (z~2.8) quadruply imaged quasar, is explored. The non linearity of the problem, together with the proximity of the source to a cusp of the lens inner caustic, has important consequences on the dependence of the image appearance on the size and shape of the source. Their expected main features and their interpretation in terms of source extension and shape are investigated in a spirit of simplicity and in preparation for the analysis of high sensitivity and spatial resolution images that will soon be within reach with the completion of the Atacama Large Millimeter/submillimeter Array (ALMA). In particular, the information on source size carried by relative image brightness is discussed. Extension of the results to other types of quadruply imaged quasars is briefly considered. | Do Thi Hoai Pham Tuyet Nhung Pham Tuan Anh Frederic Boone Pierre Darriulat Pham Ngoc Diep Pham Ngoc Dong Nguyen Van Hiep Nguyen Thi Thao | 2013 | Research in Astronomy and Astrophysics2013，13，7： | 0 |
| 20 | STRONG CONVERGENCE OF AN INERTIAL EXTRAGRADIENT METHOD WITH AN ADAPTIVE NONDECREASING STEP SIZE FOR SOLVING VARIATIONAL INEQUALITIES显示文摘In this work,we investigate a classical pseudomonotone and Lipschitz continuous variational inequality in the setting of Hilbert space,and present a projection-type approximation method for solving this problem.Our method requires only to compute one projection onto the feasible set per iteration and without any linesearch procedure or additional projections as well as does not need to the prior knowledge of the Lipschitz constant and the sequentially weakly continuity of the variational inequality mapping.A strong convergence is established for the proposed method to a solution of a variational inequality problem under certain mild assumptions.Finally,we give some numerical experiments illustrating the performance of the proposed method for variational inequality problems. | Nguyen Xuan LINH Duong Viet THONG Prasit CHOLAMJIAK Pham Anh TUAN Luong Van LONG | 2022 | Acta Mathematica Scientia2022，42，2： | 0 |
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