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China Report ASEAN 2021年第Z1期6卷 49-49页

作者： thoi hoang phuoc

A Vietnamese student describes his longing for Beijing A year has passed since I left Beijing. Did the autumn winds blow away my memories of the city? Has the snow frozen the group photos taken with my friends last year? I am missing you, Beijing. How have you been?Only four hours on a flight would take me to the largest city in my mind. The memories from my first landing in Beijing remain vivid.

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A LETTER HOME--A Vietnamese student describes his longing for Beijing

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China Report ASEAN 2021年第1期6卷 49-49页

作者： thoi hoang phuoc 不详

Ayear has passed since I left *** the autumn winds blow away my memories of the city?Has the snow frozen the group photos taken with my friends last year?I am missing you,*** have you been?Only four hours on a flight would take me to the largest city in my *** memories from my first landing in Beijing remain *** was September,and I thought Beijing would already have snow,so I wore a winter *** it was sunny and *** on the street seemed to think I had just returned from a trip to the *** was my first trip abroad,so everything was very fresh,but I also felt small and *** the trip from the airport to the school,I only exchanged a few words with the driver.I was closed off not only by inability to speak Chinese,but also due to an introverted *** has always been a little difficult for me to communicate with *** trees along the way gently swayed as if they were welcoming my arrival,and the journey seemed *** scenery outside the car window brought all kinds of emotions to my heart,and I started recalling voices from my family:Why spend four years of your youth away from us?Who will you turn to if you get in trouble?

关键词： airport outside Vietnam

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Green synthesis of three-dimensional magnesium ferrite/titanium dioxide/reduced graphene from Garcinia mangostana extract for crystal violet photodegradation and antibacterial activity

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Journal of Semiconductors 2023年第12期44卷 111-124页

作者： Tong hoang Lin Che Quang Cong Nguyen Thanh Hoai Nam hoang An Nguyen Duy Hai Ton That Buu thoi Le Nhat Binh hoang Le Minh Lam Thanh Ngan hoang Thuy Kim Ngan Du Chi Vi Ta Dang Khoa Nguyen Huu Hieu VNU-HCM Key Laboratory of Chemical Engineering and Petroleum Processing(Key CEPP Lab)Ho Chi Minh City University of Technology(HCMUT)268 Ly Thuong Kiet StreetDistrict 10Ho Chi Minh CityVietnam Faculty of Chemical Engineering Ho Chi Minh City University of Technology(HCMUT)268 Ly Thuong Kiet StreetDistrict 10Ho Chi Minh CityVietnam Vietnam National University Ho Chi Minh City(VNU-HCM) Linh Trung WardThu Duc CityVietnam

In this study,three-dimensional porous magnesium ferrite/titanium dioxide/reduced graphene oxide(Mg Fe_2O_(4)-GM/TiO_(2)/rGO(MGTG))was successfully synthesized via green and hydrothermal-supported co-precipitation methods using the extract of Garcinia mangostana(***)as a reducing *** characterization results indicate the successful formation of the nano/micro Mg Fe_(2)O_(4)(MFO)and TiO_(2) on the structure of the reduced graphene oxide(rGO),which can also act as efficient support,alleviating the agglomeration of the nano/micro MFO and TiO_(2).The synergic effects of the adsorption and photodegradation activity of the material were investigated according to the removal of crystal violet(CV)under ultraviolet *** effects of catalyst dosage,CV concentration,and p H on the CV removal efficiency of the MGTG were also *** to the results,the CV photodegradation of the MGTG-200 corresponded to the pseudo-first-order kinetic *** reusability of the material after 10 cycles also showed a removal efficiency of 92%.This happened because the materials can easily be recollected using external *** addition,according to the effects of different free radicals·O_(2)^(-),h^(+),and·OH on the photodegradation process,the photocatalysis mechanism of the MGTG was also thoroughly *** antibacterial efficiency of the MGTG was also evaluated according to the inhibition of the Gram-positive bacteria strain Staphylococcus aureus(***).Concurrently,the antibacterial mechanism of the fabricated material was also *** results confirm that the prepared material can be potentially employed in a wide range of applications,including wastewater treatment and antibacterial activity.

关键词： magnesium ferrite titanium dioxide reduced graphene oxide Garcinia mangostana photodegradation antibacterial

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