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Tuyen Quang province
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Alocasia odora is a common plant species in Viet Nam. A phytochemical investigation of the ethyl acetate extract (EtOAc) of A. odora rhizomes collected in Tuyen Quang province led to the isolation and determination of five compounds, including three alkaloids, alocasin A, hyrtiosin B, hyrtiosulawesine (3), one mono-phenol, phydroxycinamic acid, and one fatty acid, myristic acid.
7p
viamancio
04-06-2024
4
0
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From propolis of Lepidotrigona ventralis stingless bee collected in Tuyen Quang province, eight compounds were isolated and determined as lantanolic acid, moronic acid, (+)-eudesmin, (+)-yangambin, (+)-syringaresinol, (+)-pinoresinol, dihydroconiferyl alcohol and vanillin using NMR and MS spectral data. Compounds 1 and 2 showed significant cytotoxicity against HepG-2 cancer cell line with IC50 values of 25.84±0.48 and 39.92±1.14 ug/mL, respectively.
6p
dianmotminh02
03-05-2024
2
1
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Giáo trình được biên soạn dựa trên một số tài liệu tiếng Anh chuyên ngành dành cho du lịch của các tác giả trong và ngoài nước theo hướng chọn lựa những nội dung quan trọng và cần thiết đáp ứng được các yêu cầu đặt ra trong chương trình đào tạo của nhà trường và nhu cầu sử dụng tiếng Anh sau khi ra trường của học sinh, sinh viên theo học chuyên ngành Quản lý và kinh doanh du lịch. Mời các bạn cùng tham khảo!
90p
boghoado08
05-02-2024
9
2
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To describe the current status of dental caries and gingivitis among ethnic minority students at boarding secondary schools in Tuyen Quang province in 2017. Methods: A cross-sectional descriptive study on 1,665 ethnic minority students at 6 boarding secondary schools in Tuyen Quang Province.
10p
vikissinger
21-12-2023
5
3
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The study "Experience in production cost accounting and lessons learned for manufacturing enterprises in Tuyen Quang" generalizes some theoretical basis issues on production cost accounting, discuss production cost accounting in some typical enterprises, assesses and proposes some recommendations for the implementation production cost accounting in manufacturing enterprises in Tuyen Quang province.
8p
nhanchienthien
25-07-2023
5
2
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The study surveyed 90 grapefruit farms in Phuc Ninh commune, Yen Son district, Tuyen Quang province and adopted a number of economic research methods to evaluate and analyze factors affecting the economic efficiency of grapefruit production. The results of the study show that grapefruit is a fruit tree with high economic value, a key crop, contributing to income growth, poverty reduction for people in Phuc Ninh commune.
11p
viharry
15-12-2022
8
3
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In recent years, the number of ChiemHoa buffaloes has decreased gradually and tends to be inbreeding and seriously degraded. The evaluation and effective using of ChiemHoa buffaloes genetic resourses help improve the quality of ChiemHoa buffalo population. The study evaluated the genetic characteristics of 10 ChiemHoa male buffaloes for breeding in Tuyen Quang and Mountainous Animal Husbandry Research and Development Center (Song Cong, Thai Nguyen province) from 2019-2021 by 8 microsatellite markers, CSSM057, CSSM029, ILST033, RM099, CSSM022, BMC1013, ETH003, CSSM038.
8p
vihennessey
26-09-2022
6
2
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We report six new provincial records of the genus Limnonectes based on a new amphibian collection from Vietnam: L. dabanus from Ninh Thuan and Khanh Hoa Provinces, L. kiziriani from Kon Tum Province, L. limborgi from Quang Ninh and Kon Tum provinces, L. nguyenorum from Tuyen Quang Province, L. poilani from Ninh Thuan and Khanh Hoa Provinces, and L. quangninhensis from Bac Giang Province.
8p
viellenkullman
13-05-2022
11
1
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This paper mentions the prevalence risk of dropping out among ethnic minority students at Minh Quang high school, Chiem Hoa district, Tuyen Quang province. The data are collected based on the scale of student engagement in school (SEI) of 234 students in the study area. The result shows that 17.9% of students intended to drop out in the previous semesters.
9p
viindranooyi
07-05-2022
20
1
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This study examines the roles of crop boom (orange) in biodiversity conservation in Cham Chu Nature Reserve, Tuyen Quang province in the Northern Limestone Mountain Region of Vietnam. The results indicatedthat the local policy on orange development in Tuyen Quang since 2000 has made positive contributions to both local livelihood improvements and biodiversity conservation
13p
meyerowitz
25-12-2021
14
0
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Organic agricultural production has been taking place in many countries around the world with a strong shift from traditional agriculture to sustainable agriculture in order to create high-value agricultural products with food safety, environmental protection and climate change adaptation. Organic agricultural production is considered as the natural farming with strict control of irrigation water, unpolluted soil and no use of chemical fertilizers, pesticides, herbicides, growth stimulants and plant varieties, livestock and materials derived from genetically modified organisms.
7p
vimichaeldell
04-12-2021
21
1
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Aims and objectives of the study: This study is designed with an aim to improve students‟ writing performance of English by applying genre-based approach to teach writing skill to students.
56p
closefriend09
16-11-2021
21
1
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Theloderma albopunctatum (Liu & Hu, 1962) was recorded for the first time from Cham Chu Nature Reserve in Tuyen Quang Province, Northern Vietnam. In addition, we provide tadpole description of this species based on four tadpole specimens, which were collected from Tuyen Quang Province.
8p
vibigates
23-10-2021
8
1
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This article has established a flash flood hazard map at a scale of 1/100,000 in Tuyen Quang province. In the map database, districts with a high risk of flash flood were identified, including Na Hang, Chiem Hoa, Ham Yen, and Lam Binh, the average flash flood hazard level included districts: Yen Son, Son Duong; Tuyen Quang city has a low risk of flash floods.
8p
viaespa2711
31-07-2021
31
5
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The objectives were: To describe the situation of HIV infection and risk behaviours of infection among injecting drug user in three provinces: Hoa Binh, Bac Kan, Tuyen Quang (2009-2010). To evaluate the effectiveness of comprehensive intervention model to prevent HIV transmission among injecting drug users (2011-2013).
28p
petsematary
02-06-2021
28
3
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From the methanol extract of dried powders of Hedyotis diffusa Willd. (Rubiaceae) plant growing in Tuyen Quang Province, three compounds were isolated and identified: B-sitosterol, daucosterol and ursolic acid. Their structures were confirmed by various spectral methods (IR, NMR, MS, 1H-NMR, 13C-NMR, etc.) and by comparison with those of references.
5p
larachdumlanat127
20-12-2020
27
2
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Two species of the genus Miconchus, viz. M. dahousiensis and M. baeticus, were recorded for the first time in Vietnam. The two collected species from Tuyen Quang, Ha Giang and Bac Can Provinces were redescribed and illustrated.
8p
angicungduoc7
09-09-2020
32
2
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Located in Tuyen Quang and Ha Giang Provinces, the Cham Chu Nature reserve (NR) has diverse plant ecosystem types, and its the flora is rich in species. However, the pteridophyte flora of Tuyen Quang and Ha Giang Provinces has not been so far generally studied. This study presented results of three biotic surveys conducted on Cham Chu mountains and adjacent sites surveys in 2018–2019. A total of 123 plant specimens gathered and analyzed. With 84 plant species of 43 genera belonging to 23 families recorded. The family Polypodiaceae is the richest with 8 genera and 12 species.
15p
12120609
23-03-2020
16
1
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This study assessesthe IKEA linkage model, with a particular focus on its economic, social and environmental impacts. FromSeptember 2016 to March 2017, report authors conducted interviews with (i) representatives of IKEA in Vietnam, (ii) wood processing companies responsible for manufacturing products (generally, furtniture) for IKEA, (iii) Chain of Custody (CoC)sawmills processing FSC-certified material from households to the wood processing companies, and (iv) plantation households in Quang Tri, Yen Bai, and Tuyen Quang provinces that supply the FSC-certified timber.
40p
nguaconbaynhay2
07-01-2020
24
1
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The Tonkin Snub-nosed Monkey Rhinopithecus avunculus is among the World’s 25 most endangered primates. At present, the species is found only in few forest areas in Ha Giang and Tuyen Quang Provinces, north-east Vietnam with a total number not exceeding 250 individuals.
8p
viaphrodite2711
15-10-2019
13
1
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