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In our other published study, a Rhodaminederived Schiff base (RS) was used as a fluorescent chemosensor for detection of Hg(II) ions in water media. The fee RS is non-fluorescent compound. The reaction between Hg(II) ions and RS to form HgRS(H2O) complex led to the ring-opening of spirolactam in RS and gave rise to an obviously enhanced fluor...

8 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 909 | Lượt tải: 0

Co-feeding of bio-oil with conventional feeds into refinery units (e.g. FCC) has potential for partial replacement of fossil feeds by renewable and sustainable resources in the short-term. It not only takes the advantage of the mature technologies but also reduces the capital costs due to the use of available existing infrastructure of petrol...

9 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 959 | Lượt tải: 0

p today, computational chemistry has evolved into a powerful tool to be used to study in many areas. In this review, the computational quantum chemical methods based on B3LYP functional have been applied to determine the bond dissociation enthalpies of a variety of substituted benzenes derivatives. In searching for suitable methods to be use...

13 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 855 | Lượt tải: 0

NR nanocomposites with two kinds of nanofillers: organic (nanocellulose) and inorganic (silica, nanoclay) were introduced. They may be prepared by mean of all methods for polymer nanocomposite preparation. However, the most promising for industrial use are mixing in latex and melt compounding technique. The most important in NR nanocomposite...

16 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 860 | Lượt tải: 0

In Ha Hoa district, the weight of manure generated depended on the amount of feed per day. The average manure discharge was 0.99 kg/day (including manure generated by piglets) and 1.3 kg/day (excluding manure generated by piglets). The total of pig manure generated in the whole district of Ha Hoa was 80.7 ton/day. For the households with less th...

11 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 869 | Lượt tải: 0

After 7 days burned, all three treated groups were found to be not different by the external morphology. From day 7 to day 12, the morphology of 3 treatment groups was changed. The area of the wound had significant changes, especially in group treatment by nCur-CP that decreased from 82.2 ± 17.35 mm2to 12.2 ± 4.9 mm2 (p < 0.05). After 20 days of...

10 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 952 | Lượt tải: 0

The MnAC samples were successfully prepared via magnetic stirring and ultrasonic stirring methods. The resulted samples are amorphous structure with 32~42% MnO2 loading. The magnetic stirring prepared sample has spherical particles while ultrasonic stirring sample has mixed spherical and rod-like particle. The introducing of manganese oxide resu...

12 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 1008 | Lượt tải: 0

MgHAp coatings have been successfully synthesized on 316L SS substrate by the electrodeposition method. The optimal conditions were chosen to deposite MgHAp coatings. The obtained MgHAp has single phase crystals of HAp, fibrous shape and the content of 0.2 wt% Mg and 1.2 wt% Na similar to natural bone which could be improved mechanical prope...

6 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 741 | Lượt tải: 0

Using combined chromatographic and spectroscopic methods, three flavonols including 5,7,3’,4’- tetramethylquercetin (1), 3’-hydroxy-3,5,7,4’- tetramethoxyflavone (2), and 3,5-dihydroxy-7,3',4'- trimethoxyflavone (3) were isolated and structurally identified from the methanol extract of the aerial parts of O. stamineus Benth. All of the isolat...

5 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 965 | Lượt tải: 0

Three-component-oxide CaO-CuO-CeO2 was successfully fabricated via the sol-gel method. XRD result showed the single phase of CeO2 when the contents of Cu and Ca was kept below 15 and 7.5 mol.%, respectively. The material fabricated at aging temperature of 70 oC, calcination at 600 oC for 30 min possessed the highest phenol conversion (96.3 %...

7 trang | Chia sẻ: honghp95 | Ngày: 01/12/2020 | Lượt xem: 738 | Lượt tải: 0