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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 | Flow Visualization of Rhinoceros Beetle (Trypoxylus dichotomus) in Free Flight显示文摘 | Tien Van Truong Tuyen Quang Le Hieu Trung Tran Hoon Cheol Parka Kwang Joon Yoon Doyoung Byun | 2012 | Journal of Bionic Engineering2012,9,3: | 4 |
| 3 | Anti-inflammatory effects of fatty acids isolated from Chromolaena odorata显示文摘Objective:To identify inhibitors of nitric oxide production and NF-κB activity from Chromolaena odorata(C.odorata).Methods:The compounds isolated from the aerial parts of C.odorata by bioassay-guided fractionation were investigated for their inhibitory effects on the NO production and NF-κB activity in LPS-stimulated RAW264.7 cells.Results:Six fatty acids (S)-coriolic acid(1),(S)-coriolic acid methyl ester(2),(5)-15,16-didehydrocoriolic acid(3),(S)- 15,16-didehydrocoriolic acid methyl ester(4),linoleamide(5) and linolenamide(6) were isolated. All compounds inhibited the NO production at concentrations consistent with those required for NF-κB inhibition.Compound 2 was the most active with the IC50 values of 5.22 and 5.73μM. The addition of a double bond in the fatty chain decreased the inhibitory effects while the methyl esterification increased the activities.Conclusions:The fatty acid components in C.odorata with NF-κB inhibitory activity could explain the anti-inflammation property of this plant in traditional medicine.This study could also contribute to the better use of C.odorata for human health care. | Tran Thi Hong Hanh Dan Thi Thuy Hang Chau Van Minh Nguyen Tien Dat | 2011 | Asian Pacific Journal of Tropical Medicine2011,4,10: | 3 |
| 4 | 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 |
| 5 | Two- and Three-Dimensional Simulations of Beetle Hind Wing Flapping during Free Forward Flight显示文摘 | Tuyen Quang Le Tien Van Truong Hieu Trung Tran Soo Hyung Park Jin Hwan Ko Hoon Cheol Park Kwang Joon Yoon Doyoung Byun | 2013 | Journal of Bionic Engineering2013,10,3: | 2 |
| 6 | Assessing the test–retest repeatability of the V ietnamese version of the N ational E ye I nstitute 25‐item V isual F unction Q uestionnaire among bilateral cataract patients for a V ietnamese population显示文摘 | Kien Gia To Lynn Meuleners Huei‐Yang Chen Andy Lee Dung Van Do Dat Van Duong Tien Duy Phi Hoang Huy Tran Nguyen Do Nguyen | 2014 | Australasian Journal on Ageing2014,,: | 1 |
| 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 | A progressive clustering algorithmto group the XML data by structural and semanticsimilarity显示文摘 | Tran Tien Nayak Richi | 2007 | Int J of Pattern Recognition and ArtificialIntelligence2007,21,4: | 1 |
| 9 | Anti-inflammatory effects of alkaloid enriched extract from roots of Eurycoma longifolia Jack显示文摘Objective: To examine the in vitro and in vivo anti-inflammatory effects of the alkaloid enriched extract(ELA) from the roots of Eurycoma longifolia. Methods: The in vitro antiinflammatory effects of ELA were evaluated by examining its inhibitory activities against nitric oxide(NO) production and inducible nitric oxide synthase(iN OS) and cyclooxygenase2(COX-2) expressions in lipopolysaccharide(LPS)-stimulated RAW264.7 cells. The level of NO produced in the culture media was determined by Griess method. The i NOS and COX-2 protein expressions were analyzed by Western blot. The in vivo effect of ELA was evaluated on LPS-induced septic shock in mice model. Mice mortality was monitored for5 days after injection of LPS. The chemical contents of the ELA were determined by using various chromatographic and spectroscopic techniques. Results: The ELA was found to exhibit a significant anti-inflammatory effect in both in vitro and in vivo models. The results demonstrated that ELA dose-dependently inhibited LPS-induced NO production as well as the protein iN OS and COX-2 expressions. In the septic shock model, ELA dose-dependently protected mice from LPS-induced mortality. Further study on the isolated components of ELA indicated that 9,10-dimethoxycanthin-6-one may contribute significantly to the antiinflammatory effects of the extract. Conclusions: These results suggest that ELA exhibits the anti-inflammatory activity via suppression of pro-inflammatory mediators such as NO, iN OS,and COX-2 and protects mice from LPS-induced mortality in septic shock model. | Dao Thi Thanh Hien Tran Phi Long Tran Phuong Thao Jeong-Hyung Lee Duong Thu Trang Nguyen Thi Thu Minh Pham Van Cuong Do Thi Ngoc Lan Nguyen Hai Dang Nguyen Tien Dat | 2019 | Asian Pacific Journal of Tropical Biomedicine2019,9,1: | 1 |
| 10 | The Lower Paleolithic Site of Nui Do显示文摘 | Pham Van Kinh Luu Tran Tien | 1978 | Vietnamese Studies(Hanoi)1978,,: | 1 |
| 11 | A research on the energy efficiency operational indicator EEOI calculation tool on M/V NSU JUSTICE of VINIC transportation company,Vietnam显示文摘Nowadays,the development of science and technology brings the innovations and resolutions in aims with increasing the benefits and incomes for companies and producers.Additionally,the development of nation’s economic associates with environmental protection.In the field of shipping transportation,the increasing in a number of ships operates then International Maritime Organization IMO’s regulations become gradually more tightly about the environmental protection.EEOI-Energy Efficiency Operational Indicator is an operational measure tool for assessing the ship energy efficiency and CO 2 emission to the environment.Furthermore,the research status is about ships energy efficiency management also has the optimistic trends and more effective.In the world,there are a lot of ships energy efficiency researches in aim with enhancing the energy efficiency and environmental protection.For instance,the voyage optimization,increasing the propulsion efficiency of ships,reducing the resistances,etc.However,in Vietnam,there are a lot of shipping transportation companies with different types of ship but the number of research about ships energy efficiency management also restrict.Since this research was carried out and applied the energy efficiency measure tool of International Maritime Organization(IMO)for assessing all ships in Vietnam.The above workings were conducted by EEOI calculation tool for a certain ship with name M/V NSU JUSTICE 250,000 DWT of the VINIC Shipping Transportation Company,Vietnam. | Tien Anh Tran | 2017 | Journal of Ocean Engineering and Science2017,2,1: | 1 |
| 12 | First SHRIMP U–Pb zircon dating of granulites from the Kontum massif (Vietnam) and tectonothermal implications显示文摘 | Tran Ngoc Nam Yuji Sano Kentaro Terada Mitsuhiro Toriumi Phan Van Quynh Le Tien Dung | 2001 | Journal of Asian Earth Sciences2001,,1: | 1 |
| 13 | Ecological and behavioural risk factors of scrub typhus in central Vietnam:a case-control study显示文摘Background The risk factors for scrub typhus in Vietnam remain unknown.Scrub typhus caused by Orientia tsutsugamushi often presents as an undifferentiated febrile illness and remains under appreciated due to the limited availability of diagnostic tests.This tropical rickettsial illness is increasingly recognized as an important cause of non-malaria acute undifferentiated fever in Asia.This study aimed to investigate behavioural and ecological related risk factors of scrub typhus to prevent this potentially life-threatening disease in Vietnam.Methods We conducted a clinical hospital-based active surveillance study,and a retrospective residence-enrolment date-age-matched case–control study in Khanh Hoa province,Vietnam,from August 2018 to March 2020.Clinical examinations,polymerase chain reaction and enzyme-linked immunosorbent assay IgM tests were applied to define cases and controls.All enrolled participants filled out a questionnaire including demographic socio-economic status,personal behaviors/protective equipment,habitat connections,land use,and possible exposure to the vector.Multivariable conditional logistic regression was used to define the scrub typhus associated risk factors.Results We identified 44 confirmed cases and matched them with 152 controls.Among cases and controls,the largest age group was the 41–50 years old and males accounted for 61.4%and 42.8%,respectively.There were similarities in demographic characteristics between the two groups,with the exception of occupation.Several factors were significantly associated with acquisition of scrub typhus,including sitting/laying directly on household floor[adjusted OR(aOR)=4.9,95%CI:1.6–15.1,P=0.006],household with poor sanitation/conditions(aOR=7.9,95%CI:1.9–32.9,P=0.005),workplace environment with risk(aOR=3.0,95%CI:1.2–7.6,P=0.020),always observing mice around home(aOR=3.7,95%CI:1.4–9.9,P=0.008),and use of personal protective equipment in the field(aOR=0.4,95%CI:0.1–1.1,P=0.076).Conclusions Ecological and household hygiene-related factors were more associated with scrub typhus infection,than individual-level exposure activities in the hyper-endemic area.These findings support local education and allow people to protect themselves from scrub typhus,especially in areas with limitations in diagnostic capacity. | Hanh Thi Duc Tran Jan Hattendorf Hung Manh Do Thanh Tien Hoang Hang Thi Hai Hoang Hoa Ngoc Lam Mai Kim Huynh Lan Thi Hoang Vu Jakob Zinsstag Daniel Henry Paris Esther Schelling | 2021 | Infectious Diseases of Poverty2021,10,4: | 1 |
| 14 | Tongue swelling as a manifestation of tongue metastasis from pulmonary sarcomatoid carcinoma: A case report显示文摘BACKGROUND Sarcomatoid carcinoma is a rare subtype of non-small-cell lung cancer,commonly associated with locally advanced disease,early metastasis,and poor prognosis.Tongue metastasis from lung cancer is a rare condition that may occur in advanced stage of the disease.CASE SUMMARY The patient was a 70-year-old female with a history of resected pulmonary sarcomatoid carcinoma(PSC)who presented with subacute tongue swelling,imparting the clinical impression of a lingual abscess.However,histologic examination of the partial glossectomy revealed a high-grade,poorly differentiated spindle and epithelioid carcinoma consistent with metastatic PSC.CONCLUSION Although uncommon,clinicians should be cognizant of the possibility of a metastatic process to the tongue mimicking a benign or inflammatory process.A high index of suspicion for metastatic disease should be maintained when tongue swelling is observed in patients with a known history of PSC. | Meng-Ni Guo Anum Jalil Jie-Ying Liu Ruo-Yu Miao Tien Anh Tran Jian Guan | 2021 | World Journal of Clinical Oncology2021,12,4: | 1 |
| 15 | Magnetic lattices for ultracold atoms and degenerate quantum gases显示文摘We review recent developments in the use of magnetic lattices as a complementary tool to optical lattices for trapping periodic arrays of ultracold atoms and degenerate quantum gases. Recent advances include the realisation of Bose–Einstein condensation in multiple sites of a magnetic lattice of one-dimensional microtraps, the trapping of ultracold atoms in square and triangular magnetic lattices,and the fabrication of magnetic lattice structures with submicron period suitable for quantum tunnelling experiments.Finally, we describe a proposal to utilise long-range interacting Rydberg atoms in a large spacing magnetic lattice to create interactions between atoms on neighbouring sites. | Yibo Wang Prince Surendran Smitha Jose Tien Tran Ivan Herrera Shannon Whitlock Russell Mc Lean Andrei Sidorov Peter Hannaford | 2016 | Science Bulletin2016,61,14: | 1 |
| 16 | Characteristics of Suspended Particulate Matter and the Coastal Turbidity Maximum Areas of the Mekong River显示文摘 | Vu Duy Vinh Tran Anh Tu Tran Dinh Lan Nguyen Ngoc Tien | 2015 | Journal of Environmental Science and Engineering(A)2015,4,2: | 1 |
| 17 | Self-adaptive MAG welding can move into the industrial phase-the first industial application of MAG STT welding with laser monitoring of the joint 显示文摘 | Thong Tran Tien | 2007 | Welding International2007,21,10: | 1 |
| 18 | PROSPECTIVE RANDOMIZED CLINICAL TRIAL OF THE EFFECTS OF THREE MODERN ANTIRETROVIRAL THERAPIES ON CAROTID INTIMA-MEDIA THICKNESS IN HIV-INFECTED INDIVIDUALS (AIDS CLINICAL TRIALS GROUP STUDY A5260S)显示文摘 | James H. Stein Howard Hodis Todd Brown Heather J. Ribaudo Thuy Tien T. Tran Mingzhu Yan Elizabeth Lauer-Brodell Grace McComsey Michael P. Dube Robert L. Murphy Judith Currier | 2014 | Journal of the American College of Cardiology2014,,12: | 1 |
| 19 | Effects of local Joule heating during the field assisted sintering of ionic ceramics显示文摘 | Troy B. Holland Umberto Anselmi-Tamburini Dat V. Quach Tien B. Tran Amiya K. Mukherjee | 2012 | Journal of the European Ceramic Society2012,,14: | 1 |
| 20 | The impact of cataract surgery on depressive symptoms for bilateral cataract patients in Ho Chi Minh City, Vietnam显示文摘 | Kien Gia To Lynn B. Meuleners Michelle L. Fraser Dat Van Duong Dung Van Do Van-Anh Ngoc Huynh Tien Duy Phi Hoang Huy Tran Nguyen Do Nguyen | 2013 | International Psychogeriatrics2013,,: | 1 |