Introduction: CAD/CAM restorations of deep cavities are the challenges faced by intraoral-scanner... more Introduction: CAD/CAM restorations of deep cavities are the challenges faced by intraoral-scanner (IOS) for accurate 3D data acquisition. This study aimed to evaluate the influence of cavity depth on the accuracy of intraoral digital impressions. Methods: Three different mesio-occlusal class II inlay cavities on first maxillary molars were designed and 3D-printed with respective proximal box's height of 1, 2 and 3mm (group 1, 2, 3 respectively), each of which was scanned 10 times using an IOS. The reference scans of inlay cavities were obtained by an industrial scanner. Data were 3D superimposed with reference impression for trueness (n=10) and intergroup superimposed (n=45) for precision. Outcome variables for value of trueness were mean average deviation (mm), minimum/maximum average deviation (mm) and unacceptable/total elements distribution ratio (%), and for value of precision was mean average deviation (mm). Results: The 1mm-depth group resulted in the best trueness and precision significantly. For the trueness, there were significant differences between 3 groups with each other, the lowest deviation was for group 1 (21μm) statistically, followed by group 2 (24μm), group 3 (26μm). For the precision, group 1 showed the lowest scattered images statistically (mean deviation 4.7μm), then group 2, 3 (6μm and 13.8μm respectively). The deviated areas were located mostly at gingival walls of the cavity. Conclusion: The deeper the cavity, the less accurate the digital impressions, which may raise clinical concerns. It suggests the cavity elevation with resin composite might optimize the 3D acquisition of IOS to ensure the fitness of CAD-CAM restorations.
Epileptic seizure is a neurological condition caused by short and unexpectedly occurring electric... more Epileptic seizure is a neurological condition caused by short and unexpectedly occurring electrical disruptions in the brain. It is estimated that roughly 60 million individuals worldwide have had an epileptic seizure. Experiencing an epileptic seizure can have serious consequences for the patient. Automatic seizure detection on electroencephalogram (EEG) recordings is essential due to the irregular and unpredictable nature of seizures. By thoroughly analyzing EEG records, neurophysiologists can discover important information and patterns, and proper and timely treatments can be provided for the patients. This research presents a novel machine learning-based approach for detecting epileptic seizures in EEG signals. A public EEG dataset from the University of Bonn was used to validate the approach. Meaningful statistical features were extracted from the original data using discrete wavelet transform analysis, then the relevant features were selected using feature selection based on t...
SummaryBackgroundNanocovax is a recombinant severe acute respiratory syndrome coronavirus 2 subun... more SummaryBackgroundNanocovax is a recombinant severe acute respiratory syndrome coronavirus 2 subunit vaccine composed of full-length prefusion stabilized recombinant SARS-CoV-2 spike glycoproteins (S-2P) and aluminum hydroxide adjuvant. In a Phase 1 and 2 studies, (NCT04683484) the vaccine was found to be safe and induce a robust immune response in healthy adult participants.MethodsWe conducted a multicenter, randomized, double-blind, placebo-controlled study to evaluate the safety, immunogenicity, and protective efficacy of the Nanocovax vaccine against Covid-19 in approximately 13,007 volunteers aged 18 years and over. The immunogenicity was assessed based on Anti-S IgG antibody response, surrogate virus neutralization, wild-type SARS-CoV-2 neutralization and the types of helper T-cell response by intracellular staining (ICS) for interferon gamma (IFNg) and interleukin-4 (IL-4). The vaccine efficacy (VE) was calculated basing on serologically confirmed cases of Covid-19.FindingsUp ...
The genus Goniurosaurus (tiger geckos) currently consists of 23 species distributed in China, Jap... more The genus Goniurosaurus (tiger geckos) currently consists of 23 species distributed in China, Japan and Vietnam. Several species complexes and recent discoveries of cryptic species pose challenges to the species identification, which is crucial to effectively implement the recent listing of the species from China and Vietnam in CITES Appendix II and the species from Japan in CITES Appendix III. Based on the results of our field work in northern Vietnam and data compiled from literature, we herein provide a taxonomic review of the genus Goniurosaurus. Our phylogenetic analyses showed that all recorded populations of tiger geckos from Vietnam, which were found to be monophyletic with low intra-specific genetic divergences, are assigned to one of the four species: G. catbaensis, G. huuliensis, G. lichtenfelderi or G. luii. Both genetic and morphological analyses confirm that the species from China and Vietnam can be split into three major groups. Based on the newly collected data, we p...
Tạp chí Khoa học Kỹ thuật Mỏ- Địa chất, Dec 31, 2021
The aim of this study is to use four types of biochar modified AgNO3 from coffee grounds includin... more The aim of this study is to use four types of biochar modified AgNO3 from coffee grounds including CF5 (600°C/1.5h), CF6 (600°C/3h), CF7 (700°C/1.5h), and CF8 (700°C/3h) for the treatment of organic contaminants and microorganism in the seafood-processing wastewater. The results showed that the materials had the porous structure and the diameter of the pores corresponded to the crystal plane. The carbon content in the four samples reached over 90%. In addition, four samples observed the presence of Ag with the weight percentage varying from 0.06 to 0.09%. The adsorption capacities for pollutants by the four materials at different times were different. After the adsorption time, the COD value was still from 1.6 to 5.2 times higher than the limited value of the Vietnamese Standard QCVN 11:2015/MONRE-National technical regulation on the effluent of aquatic products processing industry. The three remaining parameters: TSS, ammonium (NH4 +), and microorganism met the standard limit value requirement of QCVN 11:2015. The TSS contents decreased with the lowest adsorption efficiency in CF5 sample (68.87%) and the highest value in CF8 sample (99.21%); NH4 + content decreased respectively from 385.14 mg/L to 19.97; 15.55; 21.5 and 19.16 mg/L (CF5-CF8) with the efficiency over 94% after 2h adsorption. The removal capacity of coliform in CF7 sample is the highest value of 640 MPN/100 mL with the efficiency of 98.61% while the lowest one obtained in CF5 sample with 4.300 MPN/100 mL and the efficiency of 90.65%.
ABSTRACTBackgroundNanocovax is a recombinant severe acute respiratory syndrome coronavirus 2 subu... more ABSTRACTBackgroundNanocovax is a recombinant severe acute respiratory syndrome coronavirus 2 subunit vaccine composed of full-length prefusion stabilized recombinant SARS-CoV-2 spike glycoproteins (S-2P) and aluminum hydroxide adjuvant.MethodsWe conducted a dose-escalation, open label trial (phase 1) and a randomized, double-blind, placebo-controlled trial (phase 2) to evaluate the safety and immunogenicity of the Nanocovax vaccine (in 25 microgram (mcg), 50 mcg, and 75 mcg doses, aluminum hydroxide adjuvanted). In phase 1, 60 participants received two intramuscular injection of the vaccine following dose-escalation procedure. The primary outcomes were reactogenicity and laboratory tests to evaluate the vaccine safety. In phase 2 which involved in 560 healthy adults, the primary outcomes are vaccine safety; and anti-S IgG antibody response. Secondary outcomes were surrogate virus neutralization, wild-type SARS-CoV-2 neutralization, and T-cell responses by intracellular staining (ICS) for interferon gamma (IFNg). We performed primary analyses at day 35 and day 42.ResultsFor phase 1 study, no serious adverse events (SAE) were observed for all 60 participants. Most adverse events (AE) were grade 1 and disappeared shortly after injection. For phase 2 study, after randomization, 480 participants were assigned to receive the vaccine with adjuvant, and 80 participants were assigned to receive placebo. Reactogenicity was absent or mild in the majority of participants and of short duration (mean, ≤3 days). Unsolicited adverse events were mild in most participants. There were no serious adverse events related to Nanocovax. Regarding the immunogenicity, Nanocovax induced robust anti-S antibody responses. There was no statistical difference in antibody responses among dose strengths on Day 42, in terms of anti S-IgG level and neutralizing antibody titer.ConclusionsUp to 42 days, Nanocovax vaccine was safe, well tolerated and induced robust immune responses. We propose using Nanocovax 25 mcg for Phase 3 to evaluate the vaccine efficacy. (Research funded by Nanogen Pharmaceutical Biotechnology JSC., and the Ministry of Science and Technology of Vietnam;ClinicalTrials.govnumber,NCT04683484.)
Vietnam has been extensively affected by floods, suffering heavy losses in human life and propert... more Vietnam has been extensively affected by floods, suffering heavy losses in human life and property. While the Vietnamese government has focused on structural measures of flood defence such as levees and early warning systems, the country still lacks flood risk assessment methodologies and frameworks at local and national levels. In response to this gap, this study developed a flood risk assessment framework that uses historical flood mark data and a high-resolution digital elevation model to create an inundation map, then combined this map with exposure and vulnerability data to develop a holistic flood risk assessment map. The case study is the October 2010 flood event in Quang Binh province, which caused 74 deaths, 210 injuries, 188,628 flooded properties, 9019 ha of submerged and damaged agricultural land, and widespread damages to canals, levees, and roads. The final flood risk map showed a total inundation area of 64,348 ha, in which 8.3% area of low risk, 16.3% area of medium ...
Science & Technology Development Journal - Science of The Earth & Environment, 2020
In this study, the approach of a sustainable livelihood framework following the guidance of the D... more In this study, the approach of a sustainable livelihood framework following the guidance of the Department for International Development (DFID) is used to assess the livelihoods of people in rural areas of Tan Phuoc district, Tien Giang province. This is one of the acid sulphate soil areas of the Mekong Delta. Sustainable livelihood framework according to Department for International Development in the study will consider the assets of Tan Phuoc district people to ensure livelihoods including human capital, physical capital, financial capital, natural capital, and social capital. The results show that most of the capital for developing livelihoods of people in this area is poor (natural capital, human capital, social capital, financial capital), only physical capital is considered to meet the current development needs. They are the basis for proposing development orientations for Tan Phuoc district in the future, including socio-economic development, labor quality improvement and th...
Natural forests in Vietnam have experienced rapid declines in the last 70 years, as a result of 2... more Natural forests in Vietnam have experienced rapid declines in the last 70 years, as a result of 25 degradation from logging and conversion of natural forests to timber and rubber plantations. 26 Degradation of natural forests leads to loss of biodiversity and ecosystem services, impacting the livelihoods of surrounding communities. Efforts to address ongoing loss of natural forests, through 28 mechanisms such as Reduced Emissions from Deforestation and Degradation (REDD+), require an 29 understanding of the links between forest degradation and the livelihoods of local communities, which 30 have rarely been studied in Vietnam. We combined information from livelihood surveys, remote 31 sensing and forest inventories around a protected natural forest area in North Central Vietnam. For 32 forest-adjacent communities, we found natural forests contributed an average of 28% of total 33 household income with plantation forests contributing an additional 15%. Although officially 34 prohibited, logging contributed more than half of the total income derived from natural forests. 35 Analysis of Landsat images over the period 1990 to 2014 combined with forest inventory data, 36 demonstrates selective logging was leading to ongoing degradation of natural forests resulting in loss 37 of 3.3±0.8 Mg biomass ha-1 yr-1 across the protected area. This is equivalent to 1.5% yr-1 of total forest 38 biomass, with rates as high as 3% yr-1 in degraded and easily accessible parts of the protected area. 39 We estimate that preventing illegal logging would incur local opportunity costs of USD $4.10±0.90 40 per Mg CO 2 , similar to previous estimates for tropical forest protected areas and substantially less 41 than the opportunity costs in timber or agricultural concessions. Our analysis suggests activities to 42 reduce forest degradation in protected areas are likely to be financially viable through Vietnam's 43 REDD+ program.
Forest degradation in the tropics is generating large carbon (C) emissions. In tropical Asia, log... more Forest degradation in the tropics is generating large carbon (C) emissions. In tropical Asia, logging is the main driver of forest degradation. For effective implementation of REDD+ projects in logged forests in Southeast Asia, the impacts of logging on forest C stocks need to be assessed. Here, we assess C stocks in logged lowland forests in central Vietnam and explore correlations between logging intensity, soil, topography and living aboveground carbon (AGC) stocks. We present an approach to estimate historical logging intensities for the prevalent situation when complete records on logging history are unavailable. Landsat analysis and participatory mapping were used to quantify the density of historical disturbances, used as a proxy of logging intensities in the area. Carbon in AGC, dead wood, belowground carbon (BGC) and soil (SOC) was measured in twenty-four 0.25 ha plots that vary in logging intensity, and data on recent logging, soil properties, elevation and slope were also collected. Heavily logged forests stored only half the amount of AGC of stems ≥10 cm dbh as lightly logged forests, mainly due to a reduction in the number of large (≥60 cm dbh) trees. Carbon in AGC of small trees (5-10 cm dbh), dead wood and BGC comprised only small fractions of total C stocks, while SOC in the topsoil of 0-30 cm depth stored 50% of total C stocks. Combining logging intensities with soil and topographic data showed that logging intensity was the main factor explaining the variability in AGC. Our research shows large reductions in AGC in medium and heavily logged forests. It highlights the critical importance of conserving big trees to maintain high forest C stocks and accounting for SOC in total C stock estimates.
The recent results of the LHC search for electroweak production of supersymmetric (SUSY) particle... more The recent results of the LHC search for electroweak production of supersymmetric (SUSY) particles at √ s = 13 TeV have shown improved lower limits for their masses. In addition, the projected experiment E989 will be able to measure the muon anomalous magnetic moment precisely so that the experimental uncertainty can be reduced by a factor of four. It was pointed out that if the center value of the muon g − 2 remains unchanged the deviation between the standard model (SM) prediction and the experimental value will be as large as 7.0σ. Such a large deviation will be solid evidence for new physics beyond the SM. Motivated by these results, we investigate the minimal SUSY extension of the SM with universal gaugino masses at the grand unified scale in the light of the muon g − 2 and the updated LHC constraints. The squarks are assumed to be heavy and decoupled from physics at low energy scales to resemble the SM-like Higgs boson mass of 125 GeV and other bounds for squark masses at the LHC. We have pinned down allowed windows for the lightest neutralino and the smuon masses as well as other input parameters relevant to the light SUSY sector. The expected results of the E989 experiment play a crucial role in narrowing these windows. The viability of the model for small mass regions can be tested at the LHC Run 3 and the High Luminosity LHC in the near future.
Journal of the American College of Cardiology, 2019
CLINICAL INFORMATION Patient Initials or Identifier Number. 180243623BM Relevant Clinical History... more CLINICAL INFORMATION Patient Initials or Identifier Number. 180243623BM Relevant Clinical History and Physical Exam. Female, 68-year-old admitted due to severe chest pain, have ongoing chest pain despite optimal medical treatment. BP on the admission of 150/90 mmHg. Physical examination did not show any significant abnormal signs/ symptoms. Relevant Test Results Prior to Catheterization. Echocardiography revealed good LVEF, without any abnormal wall motion. Blood test shows mildly elevated but consistent hsTnT, proBNP was nearly normal. Kidney function was normal. Relevant Catheterization Findings. The previous angiogram showed long calcified and severe stenosis of pLAD and mLAD (99%), moderated stenosis of pRCA and a mild stenosis of LCX.
To evaluate the efficacy and safety of Nit-Occlud Lê VSD Coil versus Duct Occluders for percutane... more To evaluate the efficacy and safety of Nit-Occlud Lê VSD Coil versus Duct Occluders for percutaneous closure of perimembranous ventricular septal defect (pmVSD). VSD closure using conventional pmVSD occluders has been largely abandoned because of an unacceptable high rate of complete heart block (CHB). The advantages of Duct Occluders and VSD Coil are supposed to reduce the drawbacks of previous devices, especially CHB complications. Patients underwent percutaneous pmVSD closure were divided into Coil group (using VSD Coil, n = 71) and DO group (using Duct Occluders, n = 315). Patient demographics, clinical presentations, echocardiography measurements, procedure details and follow-up data were collected. The procedure success rate was high in both DO group (95.6%) and Coil group (97.2%, P = .53). The closure rate immediately after procedure in the DO group was higher than that in the Coil group (76.8% vs. 58.0%, P < .01). After 6 months, the closure rate was not significantly dif...
Science & Technology Development Journal - Science of The Earth & Environment, 2017
The purpose of this article is to develop a framework of a tool for supporting the rapid Cleaner ... more The purpose of this article is to develop a framework of a tool for supporting the rapid Cleaner production assessment (CPA) coupling to Energy savings (ES) for the industries. On the basis of the integration of the methods such as Best available techniques (BAT), analysis of technology scheme, material and energy balances etc, this study develops a framework of a tool for rapid assessment comprising of 3 modules: “Input of data”, “Material and energy balances” and “Assessment of potentials for cleaner production and energy savings”. In a case study, a rapid assessment tool for Cleaner production coupling to Energy savings is developed for the metal production industry. The results obtained from the case study shows that the data from material and energy balances are presented fully in the illustrated technology process, and the objects subjected to improvement are identified. There are 150 objects and/or positions needing improvement in which 16 are involved with thermal processess...
Introduction: CAD/CAM restorations of deep cavities are the challenges faced by intraoral-scanner... more Introduction: CAD/CAM restorations of deep cavities are the challenges faced by intraoral-scanner (IOS) for accurate 3D data acquisition. This study aimed to evaluate the influence of cavity depth on the accuracy of intraoral digital impressions. Methods: Three different mesio-occlusal class II inlay cavities on first maxillary molars were designed and 3D-printed with respective proximal box's height of 1, 2 and 3mm (group 1, 2, 3 respectively), each of which was scanned 10 times using an IOS. The reference scans of inlay cavities were obtained by an industrial scanner. Data were 3D superimposed with reference impression for trueness (n=10) and intergroup superimposed (n=45) for precision. Outcome variables for value of trueness were mean average deviation (mm), minimum/maximum average deviation (mm) and unacceptable/total elements distribution ratio (%), and for value of precision was mean average deviation (mm). Results: The 1mm-depth group resulted in the best trueness and precision significantly. For the trueness, there were significant differences between 3 groups with each other, the lowest deviation was for group 1 (21μm) statistically, followed by group 2 (24μm), group 3 (26μm). For the precision, group 1 showed the lowest scattered images statistically (mean deviation 4.7μm), then group 2, 3 (6μm and 13.8μm respectively). The deviated areas were located mostly at gingival walls of the cavity. Conclusion: The deeper the cavity, the less accurate the digital impressions, which may raise clinical concerns. It suggests the cavity elevation with resin composite might optimize the 3D acquisition of IOS to ensure the fitness of CAD-CAM restorations.
Epileptic seizure is a neurological condition caused by short and unexpectedly occurring electric... more Epileptic seizure is a neurological condition caused by short and unexpectedly occurring electrical disruptions in the brain. It is estimated that roughly 60 million individuals worldwide have had an epileptic seizure. Experiencing an epileptic seizure can have serious consequences for the patient. Automatic seizure detection on electroencephalogram (EEG) recordings is essential due to the irregular and unpredictable nature of seizures. By thoroughly analyzing EEG records, neurophysiologists can discover important information and patterns, and proper and timely treatments can be provided for the patients. This research presents a novel machine learning-based approach for detecting epileptic seizures in EEG signals. A public EEG dataset from the University of Bonn was used to validate the approach. Meaningful statistical features were extracted from the original data using discrete wavelet transform analysis, then the relevant features were selected using feature selection based on t...
SummaryBackgroundNanocovax is a recombinant severe acute respiratory syndrome coronavirus 2 subun... more SummaryBackgroundNanocovax is a recombinant severe acute respiratory syndrome coronavirus 2 subunit vaccine composed of full-length prefusion stabilized recombinant SARS-CoV-2 spike glycoproteins (S-2P) and aluminum hydroxide adjuvant. In a Phase 1 and 2 studies, (NCT04683484) the vaccine was found to be safe and induce a robust immune response in healthy adult participants.MethodsWe conducted a multicenter, randomized, double-blind, placebo-controlled study to evaluate the safety, immunogenicity, and protective efficacy of the Nanocovax vaccine against Covid-19 in approximately 13,007 volunteers aged 18 years and over. The immunogenicity was assessed based on Anti-S IgG antibody response, surrogate virus neutralization, wild-type SARS-CoV-2 neutralization and the types of helper T-cell response by intracellular staining (ICS) for interferon gamma (IFNg) and interleukin-4 (IL-4). The vaccine efficacy (VE) was calculated basing on serologically confirmed cases of Covid-19.FindingsUp ...
The genus Goniurosaurus (tiger geckos) currently consists of 23 species distributed in China, Jap... more The genus Goniurosaurus (tiger geckos) currently consists of 23 species distributed in China, Japan and Vietnam. Several species complexes and recent discoveries of cryptic species pose challenges to the species identification, which is crucial to effectively implement the recent listing of the species from China and Vietnam in CITES Appendix II and the species from Japan in CITES Appendix III. Based on the results of our field work in northern Vietnam and data compiled from literature, we herein provide a taxonomic review of the genus Goniurosaurus. Our phylogenetic analyses showed that all recorded populations of tiger geckos from Vietnam, which were found to be monophyletic with low intra-specific genetic divergences, are assigned to one of the four species: G. catbaensis, G. huuliensis, G. lichtenfelderi or G. luii. Both genetic and morphological analyses confirm that the species from China and Vietnam can be split into three major groups. Based on the newly collected data, we p...
Tạp chí Khoa học Kỹ thuật Mỏ- Địa chất, Dec 31, 2021
The aim of this study is to use four types of biochar modified AgNO3 from coffee grounds includin... more The aim of this study is to use four types of biochar modified AgNO3 from coffee grounds including CF5 (600°C/1.5h), CF6 (600°C/3h), CF7 (700°C/1.5h), and CF8 (700°C/3h) for the treatment of organic contaminants and microorganism in the seafood-processing wastewater. The results showed that the materials had the porous structure and the diameter of the pores corresponded to the crystal plane. The carbon content in the four samples reached over 90%. In addition, four samples observed the presence of Ag with the weight percentage varying from 0.06 to 0.09%. The adsorption capacities for pollutants by the four materials at different times were different. After the adsorption time, the COD value was still from 1.6 to 5.2 times higher than the limited value of the Vietnamese Standard QCVN 11:2015/MONRE-National technical regulation on the effluent of aquatic products processing industry. The three remaining parameters: TSS, ammonium (NH4 +), and microorganism met the standard limit value requirement of QCVN 11:2015. The TSS contents decreased with the lowest adsorption efficiency in CF5 sample (68.87%) and the highest value in CF8 sample (99.21%); NH4 + content decreased respectively from 385.14 mg/L to 19.97; 15.55; 21.5 and 19.16 mg/L (CF5-CF8) with the efficiency over 94% after 2h adsorption. The removal capacity of coliform in CF7 sample is the highest value of 640 MPN/100 mL with the efficiency of 98.61% while the lowest one obtained in CF5 sample with 4.300 MPN/100 mL and the efficiency of 90.65%.
ABSTRACTBackgroundNanocovax is a recombinant severe acute respiratory syndrome coronavirus 2 subu... more ABSTRACTBackgroundNanocovax is a recombinant severe acute respiratory syndrome coronavirus 2 subunit vaccine composed of full-length prefusion stabilized recombinant SARS-CoV-2 spike glycoproteins (S-2P) and aluminum hydroxide adjuvant.MethodsWe conducted a dose-escalation, open label trial (phase 1) and a randomized, double-blind, placebo-controlled trial (phase 2) to evaluate the safety and immunogenicity of the Nanocovax vaccine (in 25 microgram (mcg), 50 mcg, and 75 mcg doses, aluminum hydroxide adjuvanted). In phase 1, 60 participants received two intramuscular injection of the vaccine following dose-escalation procedure. The primary outcomes were reactogenicity and laboratory tests to evaluate the vaccine safety. In phase 2 which involved in 560 healthy adults, the primary outcomes are vaccine safety; and anti-S IgG antibody response. Secondary outcomes were surrogate virus neutralization, wild-type SARS-CoV-2 neutralization, and T-cell responses by intracellular staining (ICS) for interferon gamma (IFNg). We performed primary analyses at day 35 and day 42.ResultsFor phase 1 study, no serious adverse events (SAE) were observed for all 60 participants. Most adverse events (AE) were grade 1 and disappeared shortly after injection. For phase 2 study, after randomization, 480 participants were assigned to receive the vaccine with adjuvant, and 80 participants were assigned to receive placebo. Reactogenicity was absent or mild in the majority of participants and of short duration (mean, ≤3 days). Unsolicited adverse events were mild in most participants. There were no serious adverse events related to Nanocovax. Regarding the immunogenicity, Nanocovax induced robust anti-S antibody responses. There was no statistical difference in antibody responses among dose strengths on Day 42, in terms of anti S-IgG level and neutralizing antibody titer.ConclusionsUp to 42 days, Nanocovax vaccine was safe, well tolerated and induced robust immune responses. We propose using Nanocovax 25 mcg for Phase 3 to evaluate the vaccine efficacy. (Research funded by Nanogen Pharmaceutical Biotechnology JSC., and the Ministry of Science and Technology of Vietnam;ClinicalTrials.govnumber,NCT04683484.)
Vietnam has been extensively affected by floods, suffering heavy losses in human life and propert... more Vietnam has been extensively affected by floods, suffering heavy losses in human life and property. While the Vietnamese government has focused on structural measures of flood defence such as levees and early warning systems, the country still lacks flood risk assessment methodologies and frameworks at local and national levels. In response to this gap, this study developed a flood risk assessment framework that uses historical flood mark data and a high-resolution digital elevation model to create an inundation map, then combined this map with exposure and vulnerability data to develop a holistic flood risk assessment map. The case study is the October 2010 flood event in Quang Binh province, which caused 74 deaths, 210 injuries, 188,628 flooded properties, 9019 ha of submerged and damaged agricultural land, and widespread damages to canals, levees, and roads. The final flood risk map showed a total inundation area of 64,348 ha, in which 8.3% area of low risk, 16.3% area of medium ...
Science & Technology Development Journal - Science of The Earth & Environment, 2020
In this study, the approach of a sustainable livelihood framework following the guidance of the D... more In this study, the approach of a sustainable livelihood framework following the guidance of the Department for International Development (DFID) is used to assess the livelihoods of people in rural areas of Tan Phuoc district, Tien Giang province. This is one of the acid sulphate soil areas of the Mekong Delta. Sustainable livelihood framework according to Department for International Development in the study will consider the assets of Tan Phuoc district people to ensure livelihoods including human capital, physical capital, financial capital, natural capital, and social capital. The results show that most of the capital for developing livelihoods of people in this area is poor (natural capital, human capital, social capital, financial capital), only physical capital is considered to meet the current development needs. They are the basis for proposing development orientations for Tan Phuoc district in the future, including socio-economic development, labor quality improvement and th...
Natural forests in Vietnam have experienced rapid declines in the last 70 years, as a result of 2... more Natural forests in Vietnam have experienced rapid declines in the last 70 years, as a result of 25 degradation from logging and conversion of natural forests to timber and rubber plantations. 26 Degradation of natural forests leads to loss of biodiversity and ecosystem services, impacting the livelihoods of surrounding communities. Efforts to address ongoing loss of natural forests, through 28 mechanisms such as Reduced Emissions from Deforestation and Degradation (REDD+), require an 29 understanding of the links between forest degradation and the livelihoods of local communities, which 30 have rarely been studied in Vietnam. We combined information from livelihood surveys, remote 31 sensing and forest inventories around a protected natural forest area in North Central Vietnam. For 32 forest-adjacent communities, we found natural forests contributed an average of 28% of total 33 household income with plantation forests contributing an additional 15%. Although officially 34 prohibited, logging contributed more than half of the total income derived from natural forests. 35 Analysis of Landsat images over the period 1990 to 2014 combined with forest inventory data, 36 demonstrates selective logging was leading to ongoing degradation of natural forests resulting in loss 37 of 3.3±0.8 Mg biomass ha-1 yr-1 across the protected area. This is equivalent to 1.5% yr-1 of total forest 38 biomass, with rates as high as 3% yr-1 in degraded and easily accessible parts of the protected area. 39 We estimate that preventing illegal logging would incur local opportunity costs of USD $4.10±0.90 40 per Mg CO 2 , similar to previous estimates for tropical forest protected areas and substantially less 41 than the opportunity costs in timber or agricultural concessions. Our analysis suggests activities to 42 reduce forest degradation in protected areas are likely to be financially viable through Vietnam's 43 REDD+ program.
Forest degradation in the tropics is generating large carbon (C) emissions. In tropical Asia, log... more Forest degradation in the tropics is generating large carbon (C) emissions. In tropical Asia, logging is the main driver of forest degradation. For effective implementation of REDD+ projects in logged forests in Southeast Asia, the impacts of logging on forest C stocks need to be assessed. Here, we assess C stocks in logged lowland forests in central Vietnam and explore correlations between logging intensity, soil, topography and living aboveground carbon (AGC) stocks. We present an approach to estimate historical logging intensities for the prevalent situation when complete records on logging history are unavailable. Landsat analysis and participatory mapping were used to quantify the density of historical disturbances, used as a proxy of logging intensities in the area. Carbon in AGC, dead wood, belowground carbon (BGC) and soil (SOC) was measured in twenty-four 0.25 ha plots that vary in logging intensity, and data on recent logging, soil properties, elevation and slope were also collected. Heavily logged forests stored only half the amount of AGC of stems ≥10 cm dbh as lightly logged forests, mainly due to a reduction in the number of large (≥60 cm dbh) trees. Carbon in AGC of small trees (5-10 cm dbh), dead wood and BGC comprised only small fractions of total C stocks, while SOC in the topsoil of 0-30 cm depth stored 50% of total C stocks. Combining logging intensities with soil and topographic data showed that logging intensity was the main factor explaining the variability in AGC. Our research shows large reductions in AGC in medium and heavily logged forests. It highlights the critical importance of conserving big trees to maintain high forest C stocks and accounting for SOC in total C stock estimates.
The recent results of the LHC search for electroweak production of supersymmetric (SUSY) particle... more The recent results of the LHC search for electroweak production of supersymmetric (SUSY) particles at √ s = 13 TeV have shown improved lower limits for their masses. In addition, the projected experiment E989 will be able to measure the muon anomalous magnetic moment precisely so that the experimental uncertainty can be reduced by a factor of four. It was pointed out that if the center value of the muon g − 2 remains unchanged the deviation between the standard model (SM) prediction and the experimental value will be as large as 7.0σ. Such a large deviation will be solid evidence for new physics beyond the SM. Motivated by these results, we investigate the minimal SUSY extension of the SM with universal gaugino masses at the grand unified scale in the light of the muon g − 2 and the updated LHC constraints. The squarks are assumed to be heavy and decoupled from physics at low energy scales to resemble the SM-like Higgs boson mass of 125 GeV and other bounds for squark masses at the LHC. We have pinned down allowed windows for the lightest neutralino and the smuon masses as well as other input parameters relevant to the light SUSY sector. The expected results of the E989 experiment play a crucial role in narrowing these windows. The viability of the model for small mass regions can be tested at the LHC Run 3 and the High Luminosity LHC in the near future.
Journal of the American College of Cardiology, 2019
CLINICAL INFORMATION Patient Initials or Identifier Number. 180243623BM Relevant Clinical History... more CLINICAL INFORMATION Patient Initials or Identifier Number. 180243623BM Relevant Clinical History and Physical Exam. Female, 68-year-old admitted due to severe chest pain, have ongoing chest pain despite optimal medical treatment. BP on the admission of 150/90 mmHg. Physical examination did not show any significant abnormal signs/ symptoms. Relevant Test Results Prior to Catheterization. Echocardiography revealed good LVEF, without any abnormal wall motion. Blood test shows mildly elevated but consistent hsTnT, proBNP was nearly normal. Kidney function was normal. Relevant Catheterization Findings. The previous angiogram showed long calcified and severe stenosis of pLAD and mLAD (99%), moderated stenosis of pRCA and a mild stenosis of LCX.
To evaluate the efficacy and safety of Nit-Occlud Lê VSD Coil versus Duct Occluders for percutane... more To evaluate the efficacy and safety of Nit-Occlud Lê VSD Coil versus Duct Occluders for percutaneous closure of perimembranous ventricular septal defect (pmVSD). VSD closure using conventional pmVSD occluders has been largely abandoned because of an unacceptable high rate of complete heart block (CHB). The advantages of Duct Occluders and VSD Coil are supposed to reduce the drawbacks of previous devices, especially CHB complications. Patients underwent percutaneous pmVSD closure were divided into Coil group (using VSD Coil, n = 71) and DO group (using Duct Occluders, n = 315). Patient demographics, clinical presentations, echocardiography measurements, procedure details and follow-up data were collected. The procedure success rate was high in both DO group (95.6%) and Coil group (97.2%, P = .53). The closure rate immediately after procedure in the DO group was higher than that in the Coil group (76.8% vs. 58.0%, P < .01). After 6 months, the closure rate was not significantly dif...
Science & Technology Development Journal - Science of The Earth & Environment, 2017
The purpose of this article is to develop a framework of a tool for supporting the rapid Cleaner ... more The purpose of this article is to develop a framework of a tool for supporting the rapid Cleaner production assessment (CPA) coupling to Energy savings (ES) for the industries. On the basis of the integration of the methods such as Best available techniques (BAT), analysis of technology scheme, material and energy balances etc, this study develops a framework of a tool for rapid assessment comprising of 3 modules: “Input of data”, “Material and energy balances” and “Assessment of potentials for cleaner production and energy savings”. In a case study, a rapid assessment tool for Cleaner production coupling to Energy savings is developed for the metal production industry. The results obtained from the case study shows that the data from material and energy balances are presented fully in the illustrated technology process, and the objects subjected to improvement are identified. There are 150 objects and/or positions needing improvement in which 16 are involved with thermal processess...
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