http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Kim, Sangho,Dao, Vinh Ai,Trinh, Thanh Thuy,Duy Phong, Pham,Park, Jinjoo,Thi Hanh Thu, Vu,Thuy Ngoc Thuy, Nguyen,Thi Thanh Giang, Ngo,Lee, Sunhwa,Yi, Junsin Institute of Physics 2019 Semiconductor science and technology Vol.34 No.6
<P>In this study, a recorded high open-circuit voltage (V<SUB>oc</SUB>) of 1.61 V and fill factor (FF) of 76.65% of a-Si:H p-i-n/heterojunction with intrinsic thin layer (HIT)-type multi-junction solar cells were achieved using grain size enlargement within the p-type <I>μ</I>c-Si:H layer in a p-type <I>μ</I>c-Si:H/n-type a-Si:H tunneling recombination junction (TRJ) layer. The p-type <I>μ</I>c-Si:H layer’s conductivity increased from 1.74?×?10<SUP>−4</SUP> to 0.1 S cm<SUP>−1</SUP> as the film’s crystallinity increased from 41.5% to 67.5%. The a-Si:H p-i-n/HIT-type multi-junction solar cells also benefited from the tuning up crystalline p-type <I>μ</I>c-Si:H layer, showing the increase of V<SUB>oc</SUB> and FF from 1.5 V and 49.88% to 1.61 V and 76.65%, respectively; while the short-circuit current density (9.38?±?0.2 mA cm<SUP>−2</SUP>) did not change significantly. These are the highest V<SUB>oc</SUB> and FF values achieved in a-Si:H p-i-n/HIT-type multi-junction solar cells, recently. From dark current-voltage analysis, it was deduced that the enhanced crystalline films could assist in suppressing carrier interference in the TRJ layer, thus reduces electric field distortion and mitigates recombination in the device. In summary, an enhanced crystalline p-type <I>μ</I>c-Si:H layer could be a viable option for ensuring an excellent TRJ layer, thus achieved high efficiency of inorganic/c-Si tandem solar cells. Using optimal condition with crystallinity of 74.1%, the photovoltaic parameters of the device yield V<SUB>oc</SUB>, J<SUB>sc</SUB> and FF of 1.51 V, 13.01 mA cm<SUP>−2</SUP> and 71.45%, which in turned giving an efficiency of 14.04% for a-SiGe:H p-i-n/HIT-type tandem solar cell.</P>
( Thuy Duong Nguyen ),( Boi An Tran ),( Ke Oanh Vu ),( Anh Son Nguyen ),( Anh Truc Trinh ),( Gia Vu Pham ),( Thi Xuan Hang To ),( Thanh Thao Phan ) 한국부식방식학회(구 한국부식학회) 2020 Corrosion Science and Technology Vol.19 No.2
This work examined the corrosion protection performance of benzoate loaded hydrotalcite/graphene oxide (HT/GO-BZ) for carbon steel. HT/GO-BZ was fabricated by the co-precipitation method and characterized by infrared spectroscopy, X-ray diffraction, and scanning electronic microscopy. The corrosion inhibition action of HT/GO-BZ on carbon steel in 0.1 M NaCl solution was evaluated by electrochemical measurements. The benzoate content in HT/GO-BZ was determined by UV-Vis spectroscopy. Subsequently, the effect of HT/GO-BZ on the corrosion resistance of the water-based epoxy coating was investigated by the salt spray test. The obtained results demonstrated the intercalation of benzoate and GO in the hydrotalcite structure. The benzoate content in HT/GO-BZ was about 16%. The polarization curves of the carbon steel electrode revealed anodic corrosion inhibition activity of HT/GO-BZ and the inhibition efficiency was about 95.2% at a concentration of 3g/L. The GO present in HT/GO-BZ enhanced the inhibition effect of HT-BZ. The presence of HT/GO-BZ improved the corrosion resistance of the waterborne epoxy coating.
Characterization of Ag-Doped p-Type SnO Thin Films Prepared by DC Magnetron Sputtering
Pham, Hoai Phuong,Thuy, Thanh Giang Le,Tran, Quang Trung,Nguyen, Hoang Hung,My Hoa, Huynh Tran,Thi Thu, Hoang,Cuong, Tran Viet Hindawi Limited 2017 Journal of nanomaterials Vol.2017 No.-
<P>Crystalline structure and optoelectrical properties of silver-doped tin monoxide thin films with different dopant concentrations prepared by DC magnetron sputtering are investigated. The X-ray diffraction patterns reveal that the tetragonal SnO phase exhibits preferred orientations along (101) and (110) planes. Our results indicate that replacing Sn<SUP>2+</SUP> in the SnO lattice with Ag<SUP>+</SUP> ions produces smaller-sized crystallites, which may lead to enhanced carrier scattering at grain boundaries. This causes a deterioration in the carrier mobility, even though the carrier concentration improves by two orders of magnitude due to doping. In addition, the Ag-doped SnO thin films show a p-type semiconductor behavior, with a direct optical gap and decreasing transmittance with increasing Ag dopant concentration.</P>
Application of Electrocoagulation for Printing Wastewater Treatment: From Laboratory to Pilot Scale
Thuy, Nguyen Thi,Hoan, Nguyen Xuan,Thanh, Dang Van,Khoa, Pham Minh,Tai, Nguyen Thanh,Hoang, Quang Huy,Huy, Nguyen Nhat The Korean Electrochemical Society 2021 Journal of electrochemical science and technology Vol.12 No.1
This study reports for the first time the application of electrocoagulation (EC) from laboratory to pilot scales for the treatment of printing wastewater, a hazardous waste whose treatment and disposal are strictly regulated. The wastewater was taken from three real printing companies with strongly varying characteristics. The treatment process was performed in the laboratory for operational optimization and then applied in the pilot scale. The weight loss of the electrode and the generation of sludge at both scales were compared. The results show that the raw wastewater should be diluted before EC treatment if its COD is higher than about 10,000 mg/L. Pilot scale removal efficiencies of COD and color were slightly lower compared to those obtained from the laboratory scale. At pilot scale, the effluent CODs removal efficiency was 81.9 - 88.9% (final concentration of 448 - 992 mg/L) and color removal efficiency was 95.8 - 98.6% (final level of 89 - 202 Pt-Co) which proved the feasibility of EC treatment as an effective pre-treatment method for printing wastewater as well as other high colored and hard-biodegradable wastewaters.
Pham, Tung Thanh,Nguyen, Tiep Tien,Pathak, Shiva,Regmi, Shobha,Nguyen, Hanh Thuy,Tran, Tuan Hiep,Yong, Chul Soon,Kim, Jong Oh,Park, Pil–,Hoon,Park, Min Hui,Bae, Young Kyung,Choi, Jeong Uk,Byun, IPC Science and Technology Press 2018 Biomaterials Vol.154 No.-
<P><B>Abstract</B></P> <P>This study aims to develop a novel surface modification technology to prolong the survival time of pancreatic islets in a xenogenic transplantation model, using 3,4–dihydroxyphenethylamine (DOPA) conjugated poly(lactide–co–glycolide)–poly(ethylene glycol) (PLGA–PEG) nanoparticles (DOPA–NPs) carrying immunosuppressant FK506 (FK506/DOPA–NPs). The functionalized DOPA–NPs formed a versatile coating layer for antigen camouflage without interfering the viability and functionality of islets. The coating layer effectively preserved the morphology and viability of islets in a co–culture condition with xenogenic lymphocytes for 7 days. Interestingly, the mean survival time of islets coated with FK506/DOPA–NPs was significantly higher as compared with that of islets coated with DOPA–NPs (without FK506) and control. This study demonstrated that the combination of surface camouflage and localized low dose of immunosuppressant could be an effective approach in prolonging the survival of transplanted islets. This newly developed platform might be useful for immobilizing various types of small molecules on therapeutic cells and biomaterial surface to improve the therapeutic efficacy in cell therapy and regenerative medicine.</P>
Pham, Tung Thanh,Nguyen, Hanh Thuy,Phung, Cao Dai,Pathak, Shiva,Regmi, Shobha,Ha, Dong-Ho,Kim, Jong Oh,Yong, Chul Soon,Kim, Sang Kyoon,Choi, Ji-Eun,Yook, Simmyung,Park, Jun-Beom,Jeong, Jee-Heon Elsevier 2019 Journal of industrial and engineering chemistry Vol.76 No.-
<P><B>Abstract</B></P> <P>Selective delivery of anti-cancer drugs to bone tumors remains an on-going developmental issue due to problems of drug availability and the physiological nature of bone. This study was undertaken to enhance accumulation of doxorubicin (DOX) in bone metastasis microenvironments using alendronate-functionalized graphene oxide nanosheets (NGO-ALs). In vivo biodistribution study showed NGO-ALs were retained for longer and at higher concentrations in bone tumor areas than non-functionalized NGOs. Our findings suggest that NGO-ALs could be used as a promising carrier to enhance antitumor effects and diminish the off-target effects of DOX for the treatment of bone metastasis.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Thu Thuy Thai,Anh Truc Trinh,Thi Thanh Tam Pham,Hoan Nguyen Xuan 한국부식방식학회 2023 Corrosion Science and Technology Vol.22 No.2
In this study, cobalt oxide (Co3O4) and cobalt-doped magnetite (CoFe2O4) nanoparticles were synthesizedby a hydrothermal method. They were then used as corrosion inhibitors for corrosion protection ofAA2024-T3 aluminum alloys. These obtained nanoparticles were characterized by x-ray diffraction, fieldemissionscanning electron microscopy, and Zeta potential measurements. Corrosion inhibition activities ofCo3O4 and CoFe2O4 nanoparticles were determined by performing electrochemical measurements for bareAA2024-T3 aluminum alloys in 0.05 M NaCl + 0.1 M Na2SO4 solution containing Co3O4 or CoFe2O4nanoparticles. Corrosion protection for AA2024-T3 aluminum alloys by a water-based epoxy with or withoutthe synthesized Co3O4 or CoFe2O4 nanoparticles was investigated by electrochemical impedance spectroscopyduring immersion in 0.1 M NaCl solution. The corrosion protection of epoxy coating depositedon the AA2024-T3 surface was improved by incorporating Co3O4 or CoFe2O4 nanoparticles in the coating. The corrosion protection performance of the epoxy coating containing CoFe2O4 was higher than that of theepoxy coating containing Co3O4.
Tung Thanh Pham,Hanh Thuy Nguyen,Cao Dai Phung,Shiva Pathak,Shobha Regmi,하동호,김종오,용철순,김상균,최지은,육심명,박준범,정지헌 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.76 No.-
Selective delivery of anti-cancer drugs to bone tumors remains an on-going developmental issue due toproblems of drug availability and the physiological nature of bone. This study was undertaken to enhanceaccumulation of doxorubicin (DOX) in bone metastasis microenvironments using alendronate-functionalized graphene oxide nanosheets (NGO-ALs). In vivo biodistribution study showed NGO-ALswere retained for longer and at higher concentrations in bone tumor areas than non-functionalizedNGOs. Ourfindings suggest that NGO-ALs could be used as a promising carrier to enhance antitumoreffects and diminish the off-target effects of DOX for the treatment of bone metastasis.