Hue University Journal of Science: Natural Science
2615-9678
Cơ quản chủ quản: N/A
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In vitro antioxidant activity and Content of compounds from Curculigo orchioides rhizome
- 2020
Curculigo orchioides Gaertn. is used in traditional medicine in Vietnam. Its
antioxidant potential was evaluated through DPPH radical scavenging and the
total antioxidant capacity method. The data resulted from DPPH radical
scavenging activity indicate that Curculigo orchioides display high activity
with a low IC50 value (22.78μg/mL), approximately 1.5 times less than that of
curcumin (34.34 μg/mL...
#Curculigo orchioides #antioxidant activity #polysaccharide #saponin – triterpenoids #total phenolic content #total flavonoid content.
Chemical composition and acetylcholinesterase inhibitory activity of essential oil from rhizomes of Distichochlamys benenica
- 2020
Twenty-seven constituents were identified by using GC/MS, representing 99.57% of
the rhizome oil of Distichochlamys benenica. The major constituents of the
essential oil are 1,8-cineole (54.39%), β-pinene (7.50%), (E)-citral (7.26%),
and (Z)-citral (6.79%). The rhizome essential oil has anti-acetylcholinesterase
activity with an IC50 value of 136.63 ± 2.70 mg/mL.
#Zingiberaceae #Distichochlamys benenica #essential oil #acetylcholinesterase #1 #8-cineole
NEW RECORDS AND AN UPDATED CHECKLIST OF AMPHIBIANS (AMPHIBIA) FROM PHU YEN PROVINCE, VIETNAM
Tập 126 Số 1B - Trang 81-94 - 2017
Abstract. We herein provide an updated checklist of 33 amphibian species from
Phu Yen Province, Vietnam. Eight of them are reported for the first time from
this province, namely Ophryophryne gerti, O. hansi, Xenophrys major,
Glyphoglossus molossus, Kaloula indochinensis, Microhyla berdmorei, M.
nanapollexa, and Amolops spinapectoralis. Additional data of morphological
characters of afore mentioned...
Effect of Dzyaloshinskii–Moriya interaction on Heisenberg antiferromagnetic spin chain in a longitudinal magnetic field
Tập 130 Số 1D - Trang 31-38 - 2021
Using functional integral method for the Heisenberg antiferromagnetic spin chain
with the added Dzyaloshinskii-Moriya Interaction in the presence of the
longitudinal magnetic field, we find out expression for free energy of the spin
chain via spin fluctuations, from which quantities characterize the
antiferromagnetic order and phase transition such as staggered and total
magnetizations derived. Fr...
#antiferromagnetic spin chain #Dzyaloshinskii–Moriya interaction #transverse spin fluctuations #functional integral method
Effect of plant density and foliar fertilizer spray on growth and yield of netted melon (Cucumis melo L.) ‘Inthanon RZ’
Tập 130 Số 1B - Trang 27-34 - 2021
The cultivation of netted melon is becoming popular in vegetable farms in
Vietnam. The netted melon cultivar ‘Inthanon RZ’ was evaluated for its growth
ability, yield, fruit quality, and economic efficiency when treated with
densities of 38,000 and 33,000 plants/ha and four foliar fertilizer sprays:
Biotic foliar AMINO ACID 1000, NPK NUTRI-GOLD 29-10-10 + 3 MgO + TE, NPK
HAI-CHYODA 14-17-12 + 12 S...
#Biotic foliar #Inthanon RZ #melon #plant density #Biotic fl #Biotic foliar #Inthanon RZ #Melon #Plant density
ẢNH HƯỞNG CỦA MÔI TRƯỜNG NUÔI CẤY LÊN KHẢ NĂNG SINH TRƯỞNG CỦA CALLUS CÂY BÁCH BỆNH (Eurycoma longifolia Jack)
Tập 128 Số 1E - Trang 69-76 - 2019
Cây bách bệnh (Eurycoma longifolia Jack) thuộc chi Eurycoma, là một trong những
cây thuốc phổ biến ở Đông Nam Á. Trong nghiên cứu này, chúng tôi đã đánh giá khả
năng sinh trưởng của callus cây bách bệnh dưới ảnh hưởng của các chất điều hòa
sinh trưởng khác nhau nhằm tạo nguyên liệu để sản xuất eurycomanone sau này. Kết
quả nghiên cứu cho thấy phối hợp nhiều chất điều hòa sinh trưởng cho hiệu quả
c...
Effects of different nutrient solutions on growth and flower quality of gerbera (Gerbera jamesonii) grown in hydroponic close system
Tập 130 Số 1D - Trang 47-54 - 2021
The nutrient solution is the decisive factor for the growth and development of
hydroponic plants. This study was conducted to determine the effect of five
nutrient solutions, namely, Hoagland, Knop, Hydro Umat F, BKFAST, and Bio-Life,
on the growth and development of gerbera (Gerbera jamesonii) in the hydroponic
system. The results show that Hydro Umat F is the most suitable solution for
planting ...
#Gerbera jamesonii #hydroponic system #nutrient solution
CHITIN LIQUID CRYSTAL- DERIVED SPONGE- LIKE AEROGEL
Tập 127 Số 1A - Trang 83-93 - 2018
Abstract: Chitin nanocrystals in anisotropic liquid crystals have been used as a
colloidal precursor to fabricate hydrogels and aerogels. Native chitin
nanofibrils are deacetylated and hydrolyzed to generate rod-shaped chitin
nanocrystals that are dispersible in water to form colloidal aqueous
suspensions. Chitin nanocolloids self-organize into anisotropic liquid crystals
that can solidify into la...
#Natural Sciences
Synthesis of FexZn1-xCr2O4 brown ceramic pigment by starch-assisted sol-gel process
Tập 128 Số 1B - Trang 13-19 - 2019
In the present paper, the ceramic pigments FexZn1-xCr2O4 (x = 0 ¸ 1) were
synthesized with the starch-assisted sol-gel method. The resulting pigments were
characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM),
and CIE L*a*b* color measurement. The results show that FexZn1-xCr2O4 pigments
form at sintering temperature of 1100 OC for 60 minutes. The ACr2O4 spinel (A:
Zn, Fe...
#Brown pigments #spinel #sol-gel method
Non-classical properties and generation schemes of superposition of multiple-photon-added two-mode squeezed vacuum state
Tập 130 Số 1B - Trang 5-12 - 2021
In this paper, we study some non-classical properties and propose the generation
schemes of the superposition of multiple-photon-added two-mode squeezed vacuum
state (SMPA-TMSVS). Based on the Wigner function, we clarify that this state
is a non-Gaussian state, while the original two-mode squeezed vacuum state
(TMSVS) is a Gaussian state. Besides, the SMPA-TMSVS is sum squeezing, as well
as diff...
#Photon-added two-mode squeezed vacuum state #Wigner function #sum squeezing #difference squeezing #generation scheme