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One-step hydrothermal synthesis of Sn-doped α-Fe_(2)O_(3) nanoparticles for enhanced photocatalytic degradation of Congo red

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Journal of Semiconductors 2022年第12期43卷 22-31页

作者： van Nang Lam Thi Bich Vu Quang Dat Do Thi Thanh Xuan Le Tien Dai Nguyen T-Thanh-Bao Nguyen Hoang Tung Do Thi Tu Oanh Nguyen Department of Natural Sciences Hoa Lu UniversityNinh NhatNinh Binh CityViet Nam Institute of Theoretical and Applied Research Duy Tan UniversityHanoi 100000Viet Nam Faculty of Natural Sciences Duy Tan UniversityDa Nang 550000Vietnam Institute of Physics Vietnam Academy of Science and Technology10 Dao TanBa DinhHanoiVietnam Institute of Materials Science Vietnam Academy of Science and Technology18 Hoang Quoc VietCaugiayHanoiVietnam

We report on the synthesis of Sn-doped hematite nanoparticles(Sn-α-Fe_(2)O_(3) NPs)by the hydrothermal *** prepared Sn-α-Fe_(2)O_(3) NPs had a highly pure and well crystalline rhombohedral phase with an average particle size of 41.4 *** optical properties of as-synthesizedα-Fe_(2)O_(3) NPs show a higher bandgap energy(2.40-2.57 eV)than that of pure bulkα-Fe_(2)O_(3)(2.1 eV).By doping Sn intoα-Fe_(2)O_(3) NPs,the Sn-doped hematite was observed a redshift toward a long wavelength with in-creasing Sn concentration from 0%to 4.0%.The photocatalytic activity of Sn-dopedα-Fe_(2)O_(3) NPs was evaluated by Congo red(CR)dye *** degradation efficiency of CR dye using Sn-α-Fe_(2)O_(3) NPs catalyst is higher than that of pureα-Fe_(2)O_(3) *** highest degradation efficiency of CR dye was 97.8%using 2.5%Sn-dopedα-Fe_(2)O_(3) NPs catalyst under visible-light *** results suggest that the synthesized Sn-dopedα-Fe_(2)O_(3) nanoparticles might be a suitable approach to develop a photocatalytic degradation of toxic inorganic dye in wastewater.

关键词： α-Fe_(2)O_(3)nanoparticles Sn Congo red photocatalytic properties photodegradation

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Gate in the paris Ramparts

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新美术 2019年第3期 2-2页

作者： Vincent van Gogh

Engineering a light–matter strong coupling regime in perovskite-based plasmonic metasurface: quasi-bound state in the continuum and exceptional points

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Photonics Research 2020年第12期8卷 I0005-I0014页

作者： LERAN LU QUYNH LE-van LYDIE FERRIER EMMANUEL DROUARD CHRISTIAN SEASSAL HAI SON NGUYEN Universitéde Lyon Institut des Nanotechnologies de LyonINL/CNRSEcole Centrale de Lyon36 avenue Guy de Collongue69130 EcullyFrance College of Engineering and Computer Science VinUniversityHanoi 14000Vietnam Universitéde Lyon Institut des Nanotechnologies de LyonINL/CNRSINSA-Lyon7 avenue Jean Capelle69621 VilleurbanneFrance Institut Universitaire de France(IUF) ParisFrance

We present theoretically the formation of exciton–photon polaritons and exciton-surface plasmon polaritons in a perovskite-based subwavelength lattice on the metallic *** is shown that the later polaritons will be achieved as the perovskite layer is ultra-thin(<50 nm),while the co-existence of both polaritons will dominate,as the thickness of the perovskite metasurface approaches *** the two cases,the lower polaritonic branches consist of dark and bright modes corresponding to infinite and finite radiative quality factors,*** salient property in this work is that it allows one to obtain exceptional points(EPs)in momentum space with a four-fold enhancement of local density of states through engineering the perovskite *** findings show that the perovskite metasurface is an attractive and rich platform to make polaritonic devices,even with the presence of a lossy metallic layer.

关键词： surface. perovskite exceptional

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Effect of Combinations of Sucrose and Cryoprotectants on the Survival of Catfish Embryos （Pangasidae hypophthamus）

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Journal of Agricultural Science and Technology(B) 2013年第12期3卷 887-892页

作者： Nguyen Thi Hong Nguyen Thi Nhung Nguyen Thi Uoc Nguyen Trung Thanh Nguyen Thi Hiep Nguyen van Hanh Pham van Khanh Ha Thi Ngoc Nga Truong van Thuong Bui Xuan Nguyen Department of Embryo Biotechnology Institute of Biotechnology Vietnam Academy of Science and Technology 18-Hoang QuocViet Hanoi 8404 Vietnam Department of Environment and Pathology Research Institute for Aquaculture No. 2 Cai Be Tien Giang 8473 Vietnam Research Institute for Aquaculture No. 1 Dinh Bang Tu Son Bac Ninh 84241 Vietnam

Although cryopreservation of embryos has been used in most terrestrial animals, the application of this technique has not been succeeded for aquatic animals. In this study, the authors investigate the effect of different combinations of sucrose （SUC, C12H22OH） and cryoprotectants （CPAs） on the survival of the catfish embryos （Pangasidae hypophthalmus） at low temperatures （4, 0 and -20 ℃） for short-term storage. For this aim, embryos with somites and optic cups were exposed to different combinations of sucrose with methanol （SUC ＋ MeOH）, 1.2-propylene glycol （SUC ＋ PROH） and ethylene glycol （SUC ＋ EG） at four concentrations ratios：（1） 0.5 M SUC ＋ 0.5 M CPA; （2） 1 M SUC ＋ 0.5 M CPA; （3） 0.5 M SUC ＋ 1 M CPA; （4） 1 M SUC ＋ 1 M CPA for 40 min at 4, 0 and -20 ℃. Embryos kept in water at room temperature （RT）, 4, 0 and -20℃ were used as controls. The survival rate was expressed as a percentage of hatched embryos per total embryos treated. The results showed that the hatching rate declined significantly when embryos were stored in water at 0 ℃ and -20℃. For embryos at 0 ℃ storage, the highest survival rate （87.78%） was obtained with 1 M SUC ＋ 1 M MeOH combination while at -20 ℃, only embryos in the combined treatments of 0.5 M SUC ＋ 1 MEG and 0.5 M SUC ＋ 1 M PROH reached the hatching stage （40% and 83.33%, respectively）. In conclusion, the results showed that the catfish embryos are sensitive to sub-zero temperatures and the combined treatment of 0.5 M sucrose and 1 M propylene glycol can be used to protect catfish embryos from damages caused by low temperature （0 ℃ and -20 ℃）.

关键词： Catfish cryoprotectants embryos low temperature sucrose.

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东南亚断裂构造的演化(英文)

大地测量与地球动力学 2005年第1期25卷 51-60页

作者：高庭朝阮友宣黎文勇范南雄 Mai Xuan Bach Thai Anh Tuan 越南国家自然科学与技术中心地球物理研究所

本研究项目是采用诸如地质学解释、影像判读和地球物理探测等多种方法相结合进行的。在所得结果的基础上参考了越南国内外同行的一些资料编制了东南亚、越南及邻区的断裂构造图,其比例尺分别为1∶4百万和1∶1百万。分析所得结果... 详细信息

本研究项目是采用诸如地质学解释、影像判读和地球物理探测等多种方法相结合进行的。在所得结果的基础上参考了越南国内外同行的一些资料编制了东南亚、越南及邻区的断裂构造图,其比例尺分别为1∶4百万和1∶1百万。分析所得结果显示出东南亚断裂构造演化的下列情况: 1)在现今地质结构方面　东南亚是欧亚岩石圈板块的东南部分,由一条消减带围绕,这条消减带的伸展从 Myanmer开始,通过Nicobar,JavaTimor直到东菲律宾。东南亚被SongHong(即红河)断裂,ThreePagodas断裂和Hainam Natuna断裂等2级断裂系统分成3个微板块。 2)在早新生代,东南亚是分为5个微板块的。它们的分界断裂中有2个一级断裂(中央东海扩张带和Lupar Kuching消减带)和3个二级断裂(即上述3个)。 3)上述绝大多数二和三级断裂从晚新生代起活化且继承了从早新生代即已发生和发展了的二、三级断裂,但在某些条件下,运动方向却完全变成了相反,尤其是走滑运动的方向。我们的研究结果表明:在这一地区内,盆地、隆起、岩浆侵入、褶皱和局部断裂等构造的形成都取决于这些沿着一、二级走滑断裂的微板块运动。

关键词：断裂构造消减带走滑断裂走滑运动板块运动岩石圈演化东南亚中央继承

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Using Visual MODFLOW Model to Assess the Efficiency of Subsurface Barrier Wall for Groundwater Flow Regulation and Reduction of Saline Intrution

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Journal of Environmental Science and Engineering(A) 2021年第3期10卷 104-115页

作者： Nguyen Minh Khuyen Doan van Long Nguyen Tien Bach Tang Huu Dong Bui Cong Du Dang dinh Phuc Department of Water Resources Management Ministry of Natural Resources and EnvironmentHanoi 100000Vietnam Vietnam Association of Hyhrogeology Hanoi 100000Vietnam

Barrier walls effectively store water,regulate underground flows,improve exploitable reserves and prevent saltwater *** effectiveness of the underground barrier wall depends not only on the hydrogeological structure,the technical parameters of the wall but also on the layout scheme of the exploitation well *** results showed that in natural conditions,the ground water level upstream of the barrier wall rose in the presence of a barrier *** wells located downstream of high barrier walls,the water level *** amount of underground current flowing into the sea decreased,the annual average value of the whole region decreased was 316 m3/day and *** presence of a wall,both the water level and the amount of evaporation *** average increase in evaporation volume during the calculation period of ten thousand days with walls was 4.114 m3/*** in presence of a wall,the amount of water that can be exploited increases by the total amount of evaporation plus the decrease in discharge to the sea and is equal to 4,424 m3/*** the exploitation condition,if the water level in the presence of wall is kept as low as in the absence of wall,the exploitation flow will increase to about 4,400 m3/day and *** the calculated water level values when there is a wall and without a wall,we can see that if the exploitation flow in presence of a wall and in the absence of wall is the same,the water level drop at the calculated observation wells upstream of the wall will decrease from 0.21 m to 3.97 *** condition of effective exploitation of the wall depends on the mining *** exploitation scheme is reasonable,the exploitation flow of the wells does not exceed the allowable flow so as not to cause the drying of the aquifer at the location of the *** upstream area of the wall reflects quite clearly as the Total dissolved solids content in observation wells upstream of the wall at the end of the calculation time is significantly reduced c

关键词： Subsurface barrier wall store water regulate underground flows.

Rectifying jet breakup by electric forcing

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液滴(英文) 2023年第2期2卷 85-93页

作者： David van Assche Thomas Beneyton Jean-Christophe Baret CRPP UMR5031CNRSUniversitéde BordeauxPessacFrance Institut Universitaire de France ParisFrance

The high-throughput production of monodisperse droplets is paramount in most of the applications in droplet *** a flow-focusing junction,a straightforward way to increase droplet production rate is to increase the flow ***,at a critical flow velocity,the droplet monodispersity breaks down due to a transition from the dripping to the jetting *** a result,a much more polydisperse droplet population is *** change from monodisperse to polydisperse droplet production emerges from the intrinsic properties of the instabilities of *** the jetting regime,droplet pinch-off is governed by a convective instability which amplifies random noise when traveling down the jet leading to an irregular *** show that with the use of an amplitude-modulated electric signal,we select the breakup frequency of the *** the perturbation frequency close to the natural breakup frequency of the jet,we increase the monodispersity of the droplet *** method is applicable to droplet production at a high throughput,that is,beyond the dripping to jetting threshold,including an active control since the frequency,and hence droplet sizes,are determined by the forcing frequency.

关键词： disperse regime hence

sTREM-1 is a specific biomarker of TREM-1 pathway activation

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Cellular & Molecular Immunology 2021年第8期18卷 2054-2056页

作者： Lucie Jolly Kévin Carrasco Margarita Salcedo-Magguilli Jean-Jacques Garaud Simon Lambden Tom van der Poll Alexandre Mebazaa Pierre-François Laterre Sebastien Gibot Amir Boufenzer Marc Derive Inotrem Vandœuvre-lès-NancyFrance Division of Infectious Diseases Amsterdam University Medical CentersUniversity of AmsterdamAmsterdamThe Netherlands Intensive Care Unit Saint Louis-Lariboisière-Fernand Widal University HospitalAssistance Publique Hôpitaux de Parisand Universitéde ParisInserm MASCOTParisFrance Intensive Care Unit UniversitéCatholique de LouvainLouvain-la-NeuveBelgium Intensive Care Unit CHRU de Nancyand Universitéde LorraineNancyFrance

TREM-1(triggering receptor expressed on myeloid cells-1)is a transmembrane receptor expressed by innate immune cells,including endothelial cells and ***-1 is a crucial mediator of septic shock that acts by synergizing with Toll-like receptors(TLRs)to amplify the inflammatory responses to pathogens,thus promoting sepsis-induced immune dysregulation and organ dysfunction[1,2,3].

关键词： immune myeloid activation

Geochronology and isotope analysis of the Late Paleozoic to Mesozoic granitoids from northeastern Vietnam and implications for the evolution of the South China block

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Geochronology and isotope analysis of the Late Paleozoic to ...