Journal articles: 'Long An (Vietnam : Province)'

1

Hicks, Natalie. "Organisational Adventures in District Government in Long An Province: Central Regulation Versus Local Initiative." European Journal of East Asian Studies 3, no. 2 (2004): 279–305. http://dx.doi.org/10.1163/1570061042780874.

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AbstractThis article explores the role of district government in agricultural development in Vietnam's Long An province from 1954 to the present. It argues that it is only in the reform era that the district has begun to realise its potential as a 'transmission belt' between the higher authorities and the grassroots. Under the South Vietnamese regime and in the pre-reform era of the Socialist Republic of Vietnam, local initiative was stifled as policy was dictated from on high by central government, with disastrous consequences. In the reform era, district officials have been joined by 'associates of the state', such as agricultural extension officers, to develop innovative 'local' approaches to agricultural development. This has led to increased prosperity but also rising inequality. While the central government has been more willing to allow local experimentation under reform, its influence and interests are still felt, even at the district level. Most scholars emphasise a sharp break between pre-1975 and post-1975 Vietnam. By contrast, this article highlights the way in which there are important elements of continuity both between regimes and between the pre-reform and post-reform eras.

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Mai, Pham Quynh. "ESTIMATE RESERVES OF BAMBOO BORER AND THEIR PARASITE CHARACTERISTICS ON BAMBOO IN SON LA, VIETNAM." Vietnam Journal of Science and Technology 54, no. 3 (June 16, 2016): 332. http://dx.doi.org/10.15625/0866-708x/54/3/7253.

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Vietnam's population has been increasing, will reach 100 million peoples in the near future. When the population increased, the amount of food from traditional sources can not afford. The study of insects as food supplement in this period is very necessary. The bamboo larvae of Omphisa fuscidentalis are used as food by local peoples in mountainous provinces in Northern Vietnam in the long time. The larvae are also used as good to purchase on the domestic market today. In this paper, we presented the results of studies on the infested rates of bamboo larvae on different bamboo species and some characteristics in their parasitic larval stage and estimated reserves of the larvae in the province of Son La.

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DO, TRUONG VAN, YI-GANG WEI, and FANG WEN. "Oreocharis caobangensis (Gesneriaceae), a new species from Cao Bang Province, northern Vietnam." Phytotaxa 302, no. 1 (March 28, 2017): 65. http://dx.doi.org/10.11646/phytotaxa.302.1.6.

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A new species of Oreocharis (Gesneriaceae) from Cao Bang province, northern Vietnam is described and illustrated. The new species, Oreocharis caobangensis, is most similar to O. lungshengensis, but it can be easily distinguished from the latter by its petioles densely brownish villous, lateral veins 6–8 pair on each leaf blade, bracts smaller (1.5–2 mm long), corolla outside pubescent and pistil glabrous, 18–20 mm long.

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NGUYEN, HOANG NGHIA, VAN THO NGUYEN, VIET LAM LE, VAN TIEN TRAN, and NGUYEN VIEN. "Dendrocalamus phuthoensis (Poaceae: Bambusoideae), a new species from Phu Tho province, Vietnam." Phytotaxa 296, no. 3 (February 20, 2017): 284. http://dx.doi.org/10.11646/phytotaxa.296.3.6.

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A new species of Dendrocalamus (Poaceae: Bambusoideae), D. phuthoensis, is described and illustrated from Phu Tho Province, Vietnam. This species is similar to D. longiligulatus, but differs by its culm sheath glabrous, culm sheath ligule 6–7 mm long, serrulate, young culms densely brown pubescent, florets 7–9, arranged in the pseudospikelet, palea 12–14 mm long, with 3 or 4 veins between keels and without veins on each wing.

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Williams, Mark, Toshifumi Komatsu, Gengo Tanaka, Nguyen Huu Hung, Jan Zalasiewicz, Thijs R. A. Vandenbroucke, Simon Wallis, and Vincent Perrier. "Upper Llandovery (Telychian) graptolites of the Oktavites spiralis Biozone from the Long Dai Formation, at Lam Thuy village, Quang Binh Province, central Vietnam." Canadian Journal of Earth Sciences 53, no. 7 (July 2016): 719–24. http://dx.doi.org/10.1139/cjes-2015-0153.

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A numerically small graptolite assemblage from the Long Dai Formation at Lam Thuy village, southwestern Le Thuy district, Quang Binh Province, central Vietnam, includes Oktavites spiralis (Geinitz). The relative abundance of this species in the assemblage, coupled to its occurrence with Oktavites bodentoerlensis Loydell, identifies the lower Silurian (Llandovery Series, Telychian Stage) spiralis graptolite Biozone. Identification of the new locality at Lam Thuy enhances the dataset of Silurian graptolite-bearing localities in central Vietnam and advertises the wide utility of graptolite assemblages for biostratigraphical correlation of lower Palaeozoic strata in northern and central Vietnam.

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TO, VAN QUANG, QUOC TOAN PHAN, and VAN BANG TRAN. "Description of Coeliccia bhriulieci sp. nov. (Odonata: Zygoptera: Platycnemididae) from central Vietnam." Zootaxa 4341, no. 2 (October 31, 2017): 279. http://dx.doi.org/10.11646/zootaxa.4341.2.9.

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Coeliccia bhriulieci sp. nov. (holotype male from Tay Giang district, Quang Nam province, central Vietnam, deposited in the Zoological collection of the Southern Institute of Ecology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam) is described based on male specimens. The new species is easily distinguished from other Coeliccia species in the Southeast Asian region by the combination of its blue abdominal tip, black anal appendages and structure of genital ligula with two long flagella extending from lateral corners of apical segment.

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KOSTERIN, OLEG E., and TOM KOMPIER. "Amphicnemis valentini sp. nov. from the Cardamom ecoregion in Cambodia and Vietnam (Odonata: Coenagrionidae)." Zootaxa 4429, no. 2 (June 6, 2018): 281. http://dx.doi.org/10.11646/zootaxa.4429.2.4.

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Amphicnemis valentini sp. nov. is described from the Ream Peninsula of Cambodia (holotype: Cambodia, Preah Sihanouk Province, Ream Peninsula, 10.52258 N 103.69556 E, RMNH) and Phú Quốc Island, Kien Giang Province of Vietnam, both in the Cardamom ecoregion. It is similar to A. gracilis Krüger, 1898, which occurs in Peninsular Malaysia and Sumatra, but differs from it by a long process on the male prothorax.

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Thung, Do Cong, Nguyen Dang Ngai, Dau Van Thao, Nguyen Van Sinh, and Dao Minh Dong. "Marine biodiversity in Ha Long bay and Cat Ba archipelago." Tạp chí Khoa học và Công nghệ biển 19, no. 3 (September 25, 2019): 363–69. http://dx.doi.org/10.15625/1859-3097/19/3/13174.

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Ha Long bay - Cat Ba island located in the Northeast of Vietnam, in the area of Ha Long city (Quang Ninh province) and Cat Hai island district (Hai Phong city) is the largest limestone island in Vietnam. Features of biodiversity include the seven typical ecosystems of tropical limestone islands, namely tropical rainforest ecosystem, cave ecosystem, mangrove ecosystem, tidal ecosystem, coral reef ecosystem, soft-bottom ecosystem. Ha Long - Cat Ba also represents a high level of species diversity with 4,622 species of plants and animals on land and in the sea. In particular, on land there are 2,464 species, accounting for 53.3% and under the sea there are 2158 species, accounting for 46.7%. Up to 16 species and 114 species have been recorded in the Vietnam Red List and in the IUCN List, respectively. Together with hundreds of rare and precious species at national and regional levels, there are species of global conservation value, demonstrating that Ha Long bay - Cat Ba archipelago can possibly be a world heritage site according to the criteria of biodiversity (ix and x criteria).

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TRINH-DANG, MAU, DOAN DANG PHAN, and VAN MINH VO. "A new rotifer species: Lecane langsenensis n. sp. (Rotifera: Monogononta) from Vietnam." Zootaxa 4615, no. 1 (June 12, 2019): 155. http://dx.doi.org/10.11646/zootaxa.4615.1.8.

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Lecane langsenensis n. sp. is described from two locations in Vietnam: Lang Sen Reserve, Long An Province, and the Huong River, Thua Thien Hue Province. It is distinguished from L. arcula, L. aculeata and L. superaculeata by its longer lorica, antero-lateral spine, and claws. Moreover, the size and shape of L. langsenensis, L. arcula, L. aculeata, and L. superaculeata were measured and compared. The results showed that these species are completely different.

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JENKINS, PAULINA D., ALEXEI V. ABRAMOV, VIATCHESLAV V. ROZHNOV, and OLGA V. MAKAROVA. "Description of two new species of white-toothed shrews belonging to the genus Crocidura (Soricomorpha: Soricidae) from Ngoc Linh Mountain, Vietnam." Zootaxa 1589, no. 1 (September 19, 2007): 57–68. http://dx.doi.org/10.11646/zootaxa.1589.1.5.

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Two new species of white-toothed shrews, Crocidura zaitsevi and C. sokolovi are described from Ngoc Linh Mountain (Kon Tum Province, Vietnam). Comparisons are provided with other species of Crocidura known to occur in Vietnam. Crocidura zaitsevi is very small in size, comparable only to C. kegoensis described from Central Vietnam and distinguished by its moderately long tail and cranial features. Crocidura sokolovi is similar in size to C. attenuata but differs in pelage colour, relatively longer tail, and cranial and dental features. Both new species are currently known only from Ngoc Linh Mountain.

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Thanh Tam, Vu Thi. "Occurrence of the genus Actus (Mononchida: Mylonchulidae) in Vietnam." TAP CHI SINH HOC 39, no. 3 (June 6, 2017): 264–69. http://dx.doi.org/10.15625/0866-7160/v39n3.9269.

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Two species of Actus, A. conoidus and A. salvadoricus, are recorded, described and illustrated for the first time from Vietnam. Actus conoidus was collected from Bach Long Vi Island, Quang Ninh Province; its measurements and features corresponded well with the type population from Manipur, India. Actus salvadoricus was found in the Na Hang preservation area, Tuyen Quang Province; its measurements and morphological features corresponded well with the type population from Ilopango, San Andres, Sonsonate and El Recreo, El Salvador, as well as those from Okinawa, Japan. Citation: Vu Thi Thanh Tam, 2017. Occurrence of the genus Actus (Mononchida: Mylonchulidae) in Vietnam. Tap chi Sinh hoc, 39(3): 264-269. DOI: 10.15625/0866-7160/v39n3.9269. *Corresponding author: vtam7572@yahoo.com Received 2 March 2017, accepted 20 August 2017

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12

VISLOBOKOV, NIKOLAY A., NORIYUKI TANAKA, ANDREY N. KUZNETSOV, EVGENIYA A. KUZMICHEVA, and MIKHAIL S. ROMANOV. "Peliosanthes longicoronata (Asparagaceae), a new species from central Vietnam." Phytotaxa 360, no. 3 (July 17, 2018): 296. http://dx.doi.org/10.11646/phytotaxa.360.3.11.

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Peliosanthes longicoronata is described and illustrated as a new species from central Vietnam (Ha Tinh Province, Vu Quang National Park). The new species has comparatively long staminal corona, that is mentioned in the specific epithet. The new species resembles P. teta, but differs in its solitary, upward-facing flowers and a white, tubular, distally incurved staminal corona.

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Poulos, Christine, Jui-Chen Yang, Carol Levin, Hoang Van Minh, Kim Bao Giang, and Diep Nguyen. "Mothers’ preferences and willingness to pay for HPV vaccines in Vinh Long Province, Vietnam." Social Science & Medicine 73, no. 2 (July 2011): 226–34. http://dx.doi.org/10.1016/j.socscimed.2011.05.029.

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Meiqari, Lana, Thi-Phuong-Lan Nguyen, Dirk Essink, Pamela Wright, and Fedde Scheele. "Strengthening human and physical infrastructure of primary healthcare settings to deliver hypertension care in Vietnam: a mixed-methods comparison of two provinces." Health Policy and Planning 35, no. 8 (July 1, 2020): 918–30. http://dx.doi.org/10.1093/heapol/czaa047.

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Abstract In Vietnam, the overall prevalence of hypertension (HTN) was 21%, with lower estimates for the prevalence of HTN awareness and treatment. The health systems, like other low- and middle-income countries, were designed to provide acute care for episodic conditions, rather than a chronic condition where patients need long-term care across time and disciplines. This article describes the delivery and organization of HTN care at primary healthcare (PHC) settings in both urban and rural areas at Hue Province of Central Vietnam in comparison with Thai Nguyen province in Northern Vietnam based on the infrastructure capacity and patients’ and providers’ perspectives and experiences We used mixed-methods design that included in-depth semi-structured interviews with patients and healthcare providers at purposively selected PHC facilities in two districts of each province and a modified version of the service availability and readiness assessment inventory at all PHC facilities. We found that HTN patients in both provinces can access healthcare services to diagnose, treat and control their HTN condition at the PHC level with a focus on district facilities. Health services in Hue have allowed commune health stations (CHSs) to provide routine monitoring and prescription refills for HTN patients while maintaining periodical visits to a higher level of care to monitor the stability of the disease. Such provision of care at CHSs remained restricted in Thai Nguyen. Further improvements are necessary for referral procedures, information system to allow for longitudinal follow-up across levels of care and defining a basic health insurance or benefits package, which meets patients’ preferences with a monthly timespan for prescription refills.

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ABRAMOV, ALEXEI V., ILYA G. MESCHERSKY, and VIATCHESLAV V. ROZHNOV. "On the taxonomic status of the harvest mouse Micromys minutus (Rodentia: Muridae) from Vietnam." Zootaxa 2199, no. 1 (August 17, 2009): 58–68. http://dx.doi.org/10.11646/zootaxa.2199.1.2.

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The taxonomic status of the harvest mouse Micromys minutus from Vietnam is re-evaluated. The mtDNA analysis shows that the harvest mice from Lao Cai Province of northern Vietnam belongs to a distinct phylogenetic lineage, previously known only from a haplotype from Chengdu, Sichuan Province, southern China (Yasuda et al. 2005). The mtDNA analysis shows a strong genetic divergence among this lineage and all the other known haplotypes of Micromys minutus (11.68% for cytochrome b gene sequences). Canonical discriminant analysis of cranial and dental data, as well as of some external characters, also separate the Vietnam – South China group (also including an Indian specimen) from other Palaearctic populations. The skull of southern populations is relatively large, with a longer and broader palatine. The dorsal pelage of the Vietnamese specimens is grey, tinged with brown in comparison with the red-brown dorsal colouration sharply contrasting with the white underside in the majority of Euro-Siberian adults. The harvest mice of the Vietnam – South China group are distinguished from the typical European ones by their rather long tail that is about 120% of the body length (82 to 95% in the Palaearctic populations). Both genetic and morphological data suggest the existence of a second Micromys species, occurring at least in North Vietnam and South China. The available name for this species is Micromys erythrotis (Blyth, 1856).

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VISLOBOKOV, NIKOLAY A., MAXIM S. NURALIEV, ANDREY N. KUZNETSOV, and SVETLANA P. KUZNETSOVA. "Aspidistra globosa (Asparagaceae, Nolinoideae), a new species with erect stem from southern Vietnam." Phytotaxa 282, no. 1 (October 26, 2016): 46. http://dx.doi.org/10.11646/phytotaxa.282.1.5.

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Aspidistra globosa is described and illustrated as a new species from southern Vietnam (Gia Lai province, Kon Ka Kinh National Park). The new species has long erect stem, which is a rare feature in the genus Aspidistra. Aspidistra globosa resembles A. khangii and A. locii in globoid perigone and erect stem, but differs in smaller flowers, color of perigone, position of anthers and orientation of flower.

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Quyen, Bui Thi Tu, Linh Thuy Nguyen, Vo Thi Viet Phuong, and Le Tu Hoang. "Quality of life in methadone maintenance treated patients in Long An, a southern province of Vietnam." Health Psychology Open 7, no. 2 (July 2020): 205510292095305. http://dx.doi.org/10.1177/2055102920953053.

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This cross-sectional study was conducted to identify the quality of life (QoL) and its related factors in methadone maintenance treatment (MMT) patients at four health facilities in Long An province, Vietnam in 2019. We interviewed 373 MMT patients using the WHOQOL-BREF measurement questionnaire and used their health records to collect some other data. The findings showed that the patients had a mean QoL score of 66.1 points. Factors associated with a higher QoL score included having employment, receiving support from relatives, and having health insurance. Therefore, it is recommended that patients should be assisted to participate in health insurance and supported by their relatives.

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Giang, Nguyen Van, Phan Thanh Nghi, and Nguyen Bich Hanh. "The First Record of Adult Spotted Sea Bass (Lateolabrax maculatus, McClelland, 1844) from the Coastal Waters of Quang Ninh Province, Vietnam." Vietnam Journal of Agricultural Sciences 4, no. 1 (June 18, 2021): 946–54. http://dx.doi.org/10.31817/vjas.2021.4.1.05.

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Spotted sea bass (Lateolabrax maculatus, McClelland, 1844) is a species belonging to the genus Lateolabrax (Lateolabracidae), and is characterized by the many distinct black spots on the bodies of mature fish. For the first time, six specimens have been recorded in Quang Ninh province. The specimens were collected from Luon Cave in Bai Tu Long National Park in May-June 2019. The new specimens collected from Quang Ninh, Vietnam are different from the recorded specimens from Japan, Korea, Taiwan, and China in terms of lateral line scales (LLS) as the samples collected in Quang Ninh, Vietnam have 94-97 scales and the samples collected from the other countries have 66-82 scales. Phylogenetic analysis of the 16S rDNA sequence confirmed that all of the samples collected in Quang Ninh, Vietnam belonged to the species of spotted sea bass.

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KOMADA, NATSUKI, SHUICHIRO TAGANE, NGUYEN VAN NGOC, HOANG THI BINH, HOANG THANH SON, HIRONORI TOYAMA, HIDETOSHI NAGAMASU, AKIYO NAIKI, and TETSUKAZU YAHARA. "Erythroxylum calyptratum (Erythroxylaceae), a new species from Mt. Fansipan, northern Vietnam." Phytotaxa 347, no. 4 (April 20, 2018): 279. http://dx.doi.org/10.11646/phytotaxa.347.4.4.

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Erythroxylum calyptratum, sp. nov. (Erythroxylaceae), from Mt. Fansipan, Hoang Lien National Park, Lao Cai Province, northern Vietnam, is newly described. The new species is characterized by thinly chartaceous leaves with 2–3 mm long petiole, 1–3 flowered inflorescences, downward facing white flowers, well-developed petal appendages (1/3–1/2 length of petals) and entirely free 3 styles. A description, illustrations, DNA barcodes of rbcL and matK and a key to the species of Erythroxylum in Indochina are provided.

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PHAM, DINH, MINH NGUYEN, THAI PHAM, PHUC LA, NGA HOANG, CAO PHAN, DANG HAI YEN, and HAO TRAN. "PRELIMINARY STUDY ON INVERTEBRATE BIODIVERSITY OF VOLCANIC CAVES IN KRONG NO, DAK NONG PROVINCE, VIETNAM." LIFE OF THE EARTH 42, no. 4 (November 25, 2020): 406–10. http://dx.doi.org/10.29003/m1769.0514-7468.2020_42_4/406-410.

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Survey on invertebrate biodiversity of volcanic caves in Krong No, Dak Nong province, Vietnam was carried in 2018 and 2019. The survey were done in 8 typical caves are Co cave (475 m long), C1 cave (402 m), C2 cave (402 m), C3 cave (716 m), C4 cave (251 m), C6 cave (180 m), C6.1 cave (293 m) and C7 cave (1066 m). The survey result recorded 41 species, 31 families of 5 classes, 13 orders of invertebrate at volcanic caves in Krong No. It is expected that 13 species will become new taxa, for example a scorpion of the Chaerilidae family, Chaerilus chubluk Lourenco, Tran & Pham, 2020 in the Co cave. The large and long caves with a complicated structure with many corners are more valuable in term of biological diversity than the small caves with a simple structure.

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Vislobokov, Nikolay Aleksandrovich. "Two new species of Aspidistra (Asparagaceae, Nolinoideae) from northern Vietnam: A. clausa and A. triradiata." Phytotaxa 207, no. 3 (May 11, 2015): 265. http://dx.doi.org/10.11646/phytotaxa.207.3.4.

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Aspidistra clausa and Aspidistra triradiata are described and illustrated as new species from northern Vietnam (Vinh Phuc province, Tam Dao National Park). Aspidistra clausa is similar to A. crassifila, but has narrower leaves (lamina 2.8–4.5 cm vs. 6–12 cm), perigone tube wide tubular vs. campanulate, appendages longer, stigma conical vs. mushroom-shaped. Aspidistra triradiata is similar to A. hainanensis, but flowers larger (1.8–2.4 cm long, Ø 1.8–2.8 cm vs. 1–1.2 cm long, Ø 1.3–1.5 cm), perigone urceolate, lobes with 4 verrucose keels, stigma with three purple radial lines.

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IDREES, MUHAMMAD, TRUONG VAN DO, and XIN-FEN GAO. "A new species of Eriobotrya (Rosaceae) from Con Dao National Park, southern Vietnam." Phytotaxa 365, no. 3 (August 23, 2018): 288. http://dx.doi.org/10.11646/phytotaxa.365.3.6.

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We describe a distinctive new species of Eriobotrya condaoensis (Rosaceae) from Con Dao National Park, Ba Ria-Vung Tau Province, southern Vietnam, based on both morphological and molecular evidences. The new species is characterized by leaf blade oblong-oblanceolate, 8–12 × 4–6 cm, leaf margins crenate, both surface glabrous, secondary veins 6–7 pairs, bracts apically dentate and persistent, flowers sessile and yellowish, hypanthium funnel-shaped and brown tomentose, petals elliptic and 6–7 × 4–5 mm long, styles 2, free at base and 5–6 mm long, and ovary glabrous. Morphological characters and phylogenetic analysis based on nrDNA ITS sequences confirmed the distinctiveness of this new species in the genus.

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Minh, Avtar, Kumar, Tran, Ty, Behera, and Kurasaki. "Groundwater Quality Assessment Using Fuzzy-AHP in An Giang Province of Vietnam." Geosciences 9, no. 8 (July 27, 2019): 330. http://dx.doi.org/10.3390/geosciences9080330.

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Along with rapid population growth in Vietnam, there is an increasing dependence on groundwater for various activities. An Giang province is known to be one of the agricultural intensification areas of The Vietnamese Mekong Delta (VMD). This study aimed to evaluate the spatiotemporal variation of groundwater quality for a period of ten years from 2009 to 2018 in An Giang. The weighted groundwater quality index (GWQI) was developed based on the fuzzy analytic hierarchy process (Fuzzy-AHP) for assigning weighted parameters. The results show that that shallow wells in the Northeast and Southeast regions of An Giang were mostly categorized under “bad water” quality with high arsenic (As) concentration over the years partly due to huge amounts of sediment deposition in monsoon season. Overall, the reason for the poor groundwater quality in An Giang was the combined effect of both natural and human activities. On the other hand, we detected high values of GWQI links with high As concentration in areas where people extract more groundwater for irrigation. Temporal variation of GWQI suggested that groundwater quality at eight wells has improved from 2009 to 2018 in the wet season as compared to the dry season. The reason behind the improvement of groundwater quality during wet season was the decrease in river discharge, which causes less deposition of suspended solids near the flood plains. Moreover, the filling of unused wells can reduce the movement of pollutants from unused wells to groundwater aquifers. Although there was not sufficient evidence to show the relationship between As and sediment concentration, the temporal reduction trend in river discharge and suspended solids was detected in An Giang. The understanding of groundwater quality can help policymakers protect and manage limited water resources in the long-term.

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REN, JIN-LONG, KAI WANG, TAO THIEN NGUYEN, CHUNG VAN HOANG, GUANG-HUI ZHONG, KE JIANG, PENG GUO, and JIA-TANG LI. "Taxonomic re-evaluation of the monotypic genus Pararhabdophis Bourret, 1934 (Squamata: Colubridae: Natricinae) with discovery of its type species, P. chapaensis, from China." Zootaxa 4486, no. 1 (September 26, 2018): 31. http://dx.doi.org/10.11646/zootaxa.4486.1.2.

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The Asian monotypic genus Pararhabdophis Bourret, 1934 has long been known from a single holotype of the type species Pararhabdophis chapaensis Bourret, 1934 only. The limited available information hampered the identification of the natricine species. On the basis of eight newly collected specimens of P. chapaensis from the type locality in Sa Pa, Lao Cai Province, Vietnam and from Pingbian, Yunnan Province in southwestern China, the taxonomic position of the genus Pararhabdophis was re-evaluated using both morphological and molecular datasets for the first time. Pararhabdophis chapaensis is nested within the genus Hebius Thompson, 1913 with strong support, and morphologically indistinguishable from the latter genus. As a consequence, we herein synonymize the genus Pararhabdophis with Hebius and discuss about the existing paraphyly of some Hebius species. In addition we report Hebius chapaensis for the first time from China and provide redescription and natural history data of this poorly known species. To facilitate future taxonomic work, an identification key to all known natricine genera from China and Vietnam is also provided.

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Thang, Nguyen Van, Go Sato, Akihiko Wakai, Hoang Viet Hung, Nguyen Duc Manh, Takashi Kimura, Takanari Yamasaki, et al. "Landslide Investigation Results in Sapa Town, Lao Cai Province, Vietnam in December 2019." Journal of Disaster Research 16, no. 4 (June 1, 2021): 547–55. http://dx.doi.org/10.20965/jdr.2021.p0547.

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Every year, especially in the rainy season, landslides occur quite often in Lao Cai – a northern mountainous province of Vietnam. Specifically, in the year 2019, several landslides were observed to occur near the Sapa Ancient Rock Field in Hau Thao commune, Sapa town, Lao Cai province. In December 2019, a landslide investigation was conducted to examine the mechanism and possible causes of the landslides. Besides that, as the landslide distribution in this area is still unclear, this study will also aim to show the landslide denseness in a 700 m × 700 m square map as well as survey results in 2019 of two main landslides in such map. According to the survey, the landslide is the main phenomenon of geomorphological development in this area, being a combination of multiple different landslides with varying sizes and dissimilar triggers. The first survey landslide is about 50 m wide and 350 m long and has still been going on in recent years, with annual horizontal displacement being around 0.8 m. Meanwhile, the second one is a typical flash-landslide caused by rainfall. Despite being quite small in scale, about 15 m × 40 m, its characteristics indicate a dangerous implication in the future. This information will be the basis for further ongoing studies.

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Long, Pham Van, Gaston Giuliani, Anthony E. Fallick, Andrian J. Boyce, and Vincent Pardieu. "Trace elements and oxygen isotopes of gem spinels in marble from the Luc Yen - An Phu areas, Yen Bai province, North Vietnam." VIETNAM JOURNAL OF EARTH SCIENCES 40, no. 2 (May 19, 2018): 165–77. http://dx.doi.org/10.15625/0866-7187/40/2/12241.

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Trace elements investigated by electron microprobe analysis (EMPA) have been combined with oxygen isotopic composition of pink, red and other colored spinels (blue, purple, brown, orange, lavender) hosted by marbles and found in placers from Luc Yen and An Phu deposits, Yen Bai province, North Vietnam. The deposits are those from Nuoc Ngap, Cong Troi, Bai Son and different placers from the An Phu area. Trace elements such as Fe-Zn-Cr-V in red and pink gem spinels permit to separate those from Cong Troi and those from the others deposits of the An Phu area. Spinels from Cong Troi have low to extremely low Zn (< 500 ppm) and high Fe contents (3,000 to 16,000 ppm) while those from An Phu area are Zn-rich (up to 11,000 ppm). Iron is the dominant element for the other colored spinels whereas Zn, Cr and V contents are extremely variable. The Bai Son blue spinel is Fe-rich (5,000 to 7,200 ppm) with some V (950 to 1,830 ppm), Cr (270 to 480 ppm), Co (240 to 400 ppm) and Ni (550 to 950 ppm). The O-isotope composition of the whole spinels ranges between 12.1 and 24.2‰ (n = 25). Within each deposit, the range of δ18O values for red, pink and colored spinels is usually similar. However, the red and pink spinels from An Phu present two distinct sets of δ18O values, respectively between 13.2 to 17.0‰ (n = 7) and 22.5< δ18O < 24.2 (n = 5). Those from Cong Troi are from 14.8 to 17.7‰ (n = 3) and their range overlaps that of An Phu. The use of O-isotopes is not useful for distinguishing between the deposits, but the low to extremely low Zn content of the Cong Trois spinels is a discriminant. The variation of δ18O values (12.1 <δ18O < 24.2‰) of the whole spinels indicates that the oxygen isotopic compositions of the metamorphic fluids were probably buffered by the local δ18O values of the impure host marbles.ReferencesChauviré B., Rondeau B., Fritsch E., Ressigeac Ph., Devidal J.-L., 2015. Blue spinel from the Luc Yen district of Vietnam. Gems & Gemology, 51, 2-17.D'Ippolito V., Andreozzi G.B., Hålenius H., Skogby H., Hametner K., Günther D., 2015. Colour mechanisms in spinel: cobalt and iron interplay for the blue colour. Physics and Chemistry of Minerals, 42, 431-439.Garnier V., 2003. Les gisements de rubis associés aux marbres de l’Asie Centrale et du Sud-est: genèse et caractérisation isotopique. PhD thesis INPL, Nancy, France, 373p.Garnier, V., Ohnenstetter, D., Giuliani, G., Maluski, H., Deloule, E., Phan Trong Trinh, Pham Van Long, Hoang Quang Vinh, 2005. Age and significance of ruby-bearing marbles from the Red River shear zone, northern Vietnam. The Canadian Mineralogist, 43, 1315-1329.Garnier V., Giuliani G., Ohnenstetter D., Fallick A.E., Dubessy J., Banks D., Hoang Quang Vinh, Lhomme Th., Maluski H., Pêcher A., Bakhsh K.A., Pham Van Long, Phan Trong Trinh, Schwarz D., 2008. Marble-hosted ruby deposits from central and Southeast Asia: towards a new genetic model. Ore Geology Reviews, 34, 169-191.Giuliani G., Fallick A.E., Garnier V., France-Lanord Ch., Ohnenstetter D., Schwarz D., 2005. Oxygen isotope composition as a tracer for the origins of rubies and sapphires. Geology, 33(4), 249-252.Giuliani G., Fallick A.E., Boyce A.J., Pardieu V., Pham Van Long, 2017. Pink and red spinels in marble: trace elements, oxygen isotopes, and sources. The Canadian Mineralogist, 55, 743-761.Hauzenberger C.A., Häeger T., Baumgartner L.P., Hofmeister W., 2001. High-grade metamorphism and stable isotope geochemistry of N-Vietnamese gem-bearing rocks. In: Proceedings of the Workshop on gems and minerals of Vietnam, Hanoi, 124-138.Hauzenberger C.A., Bagola C., Häeger T., Muellen C., Nguyen Ngoc Khoi, Le Thi Thu Huong, 2014. Mineralogy and petrology of the An Phu marble hosted spinel and corundum deposit, Luc Yen, N-Vietnam. In Proceedings of the 4th International Gem and Jewelry Conference, Chiang Mai, Thailand, 76-78.Kleišmantas A., Daukšyte A., 2016. The influence of Vietnam and Sri Lanka spinel mineral chemical elements on colour. Chemija, 27, 45-51.Kretz R., 1983. Symbols for rock-forming minerals. American Mineralogist, 68, 277-279.Le Thi Thu Huong, Häeger T., Hofmeister W., Hauzenberger C., Schwarz D., Pham Van Long, Wehmeister U., Nguyen Ngoc Khoi, Nguy Tuyet Nhung, 2012. Gemstones from Vietnam: An update. Gems & Gemology, 48, 158-176.Malsy A., Klemm L., 2010. Distinction of gem spinels from the Himalayan mountain belt. Chimia, 64(10), 741-746.Malsy A., Karampelas S., Schwarz D., Klemm L., Armbruster T., Tuan Do Anh, 2012. Orangey-red to orangey-pink gem spinels from a new deposit at Lang Chap (Tan Huong - Truc Lau), Vietnam. The Journal of Gemmology, 33, 19-27.Pham Van Long, Hoang Quang Vinh, Garnier V., Giuliani G., Ohnenstetter D., Lhomme,T., Schwarz D., Fallick A.E., Dubessy J., Phan Trong Trinh, 2004. Gem corundum deposits in Vietnam. Journal of Gemmology, 29, 129-147.Pham Van Long, Pardieu V., Giuliani G., Nguy Tuyet Nhung, Pham Thi Thanh Hien, Pham Duc Anh, Nguyen Ngoc Khoi, Hoang Quang Vinh, 2014. Gemmological characteristics of spinel from Luc Yen, Yen Bai. Journal of Geology, 340, 29-36.Pham Van Long, Pardieu V., Giuliani G., 2014. Update on gemstone mining in Luc Yen, Vietnam. Gems & Gemology, 49, 233-245.Pouchou J.L., Pichoir F., 1991. Quantitative analysis of homogeneous or stratified microvolumes applying "PAP" In Electron Probe Quantification (K.F.J. Heinrich & D.E. Newbury eds.). Plenum Press, New York, USA, 31-75.Valley J.W., 1986. Stable isotope geochemistry of metamorphic rocks. Reviews in Mineralogy, 16, 445-481.Yui T.F., Khin Zaw, Wu C.-M., 2008. A preliminary stable isotope study on Mogok ruby, Myanmar. Ore Geology Reviews, 34, 182-199.

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ANH, TRAN THI PHUONG, BUI HONG QUANG, MAXIM S. NURALIEV, KHANG SINH NGUYEN, and LEONID V. AVERYANOV. "Leptomischus anisophyllus (Argostemmateae: Rubiaceae), a new species from Vietnam." Phytotaxa 507, no. 2 (June 9, 2021): 198–204. http://dx.doi.org/10.11646/phytotaxa.507.2.8.

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Leptomischus anisophyllus, a new species of Rubiaceae, is described and illustrated, and its conservation status is discussed. The species was discovered in 2017 during a botanical survey of Pu Mat National Park (Nghe An Province, Central Vietnam). The new species is remarkable by its anisophylly, a rare feature in Leptomischus. Besides, Leptomischus anisophyllus differs from morphologically similar congeners by the following features: stems terete, pubescent when young, flowers distylous, corolla tube 10–15 mm long. An updated key to the Vietnamese species of Leptomischus is provided.

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Nguyen, Dang Hoi, Hung Cuong Dang, S. I. Kolesnikov, Trung Dung Ngo, and T. V, Minnikova. "PLANTS DIVERSITY AND FOREST STRUCTURE DIFFERENTIATION BY ELEVATION IN NGOC LINH MOUNTAIN RANGE, KON TUM PROVINCE, VIETNAM." Scientific Notes of V.I. Vernadsky Crimean Federal University. Biology. Chemistry 6(72), no. 2 (2020): 165–81. http://dx.doi.org/10.37279/2413-1725-2020-6-2-165-181.

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Ngoc Linh mountain range with Ngoc Linh peak of 2598m.a.s.l is an important part of forest ecosystems in Central – Highlands, Vietnam. Located on the complex terrain with stable and long-term geological components, the plant communities here contain the diversity and originality of the high mountains and contiguous areas between Central and Central Highlands Vietnam. The study area covers 65571 hectares, of which Ngoc Linh Nature Reserve covers about 40500 hectares, spread over medium and high mountain terrain. Strongly divided terrain has created the richness, diversity, and originality of ecosystems, especially the structure of natural vegetation. The article presents characteristics and differentiation of forest plantations in Ngoc Linh mountain area; study diversity, and conservation value of regional plant diversity resources; analyzing the characteristics and relationships of plants with geographical factors, especially the rules of elevation, slope, terrain direction, soil and drainage capacity of forest land. Comparison of similarities and differences with some other areas of the Central Highlands, especially the communities with the participation of coniferous plants. To implement the scientific content, various methods have been used. Among them are the main methods: Mapping method and Geographic Information Systems, Field survey methods and Phytogeography (Plant Geography) methods. The study results recorded 1128 species of vascular plants, belong to 627 genera, 175 families, 59 orders, 10 classes, 6 divisions. The flora of Ngoc Linh mountainous area fully converges the vascular plants of the plants in Vietnam, in which the species mainly focus on Magnoliophyta. This is the most diverse division with a total of 145 families, 571 genera and 1032 species, accounting for 82,39 % of families, 91,07 % of genera, and 91,48 % of species. The comparison results show that the proportion between sectors in the plants of Ngoc Linh and the plants of Vietnam has the same structure, with quite similar proportions of dominant species group. Accordingly, the absolute advantage of the Magnoliophyta is from 91.48 % and 92.62 % respectively. 80 rare and precious species have been identified in the IUCN Red List and Vietnam’s Red Data Book 2007. There are 189 endemic species of 135 genera of 66 families. In which there are 107 endemic species of Central Vietnam, the rest belong to Vietnam endemic. Some endemic species with high conservation significance is: Panax vietnamense, P. dalatensis, Quercus langbianensis. The rules of distribution according to elevation are shown in the structure of plant communities through species composition and canopy structure of the forest. Accordingly, plant communities have a high diversity with complex structures, including 3–4 layers. At 900 m.a.s.l elevation, in mixed forests, broadleaf trees form multi-dominant and diverse species. From 1000–1500 m.a.s.l, on the mountainside terrain, the dominant vegetation with P. kesiya in the emergent layer. High diversity in forest structure clearly manifests at 2000–2300 m.a.s.l. Plants are strongly differentiated; some places are multi-dominant, and some places are dominant with P. dalatensis. The most diversity of plants is concentrated at an elevation of 2000–2300 m.a.s.l and the number of the most canopy spread from 1500–2000 m.a.s.l. Gymnosperms, especially P. kesiya and P. dalatensis, participate in single dominant and codominance roles in mixed forest communities. There are differences in the distribution of major conifer species forming plant communities in Ngoc Linh mountain range compared to Chu Yang Sin National Park and Bidoup – Nui Ba National Park in Central and South – Central Highlands. Accordingly, in Ngoc Linh, P. dalatensis has a wider distribution area, higher dominance with a clear role in the formation of plant communities at elevations above 2000 m.a.s.l.

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Lý, Ngọc-Sâm, Danh-Hùng Nguyễn, Thị-Hương Lê, Minh-Hợi Trần, Ngọc-Đài Đỗ, Bá-Vương Trương, and Stephen Maciejewski. "Loxostigma puhoatense (Gesneriaceae), a new species from North Central Vietnam." PhytoKeys 151 (June 12, 2020): 49–57. http://dx.doi.org/10.3897/phytokeys.151.49473.

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Loxostigma puhoatense N.D. Do et al., sp. nov., a new species of Gesneriaceae, is described and illustrated from Pu Hoat Nature Reserve, Nghe An Province, Vietnam. This species is morphologically similar to L. dongxingensis and L. damingshanensis in the plant habit, indumentum system of vegetative and reproductive characters, shape of leaf blades, calyx, pistil but differs from the latter two by the abaxially reddish-purple leaf blade with pubescent along veins, lateral veins 11–19, shorter white to pale yellowish-white corolla (3.7–3.8 cm long) with purple-spotted and glabrous inside, longer abaxial stamens in 2–2.1 cm, shorter and densely glandular-puberulent ovary in 1–1.2 cm, and sparsely glandular-puberulent style. Data on distribution, ecology, phenology, and vernacular of the new species are provided.

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Trần Đức, Văn. "APPLICATION GIS AND REMOTE SENSINGTO ESTABLISH FLASH FLOOD HAZARD MAP IN TUYEN QUANG PROVINCE." SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY 7, no. 21 (July 29, 2021): 142–49. http://dx.doi.org/10.51453/2354-1431/2021/517.

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Tuyen Quang is one of the provinces at high risk of flash floods in the Northern Midlands and Mountains of Vietnam. In the rainy season, like other localities in the region, Tuyen Quang has a long, concentrated rainfall combined with steep hills and mountains, large divisions, many rivers, and streams; In addition, the thinning of the vegetation cover due to excessive exploitation of the forest by the local people causes flash floods to appear more and more. Applying GIS and remote sensing to establish a map of flash flood risk is a quantitative approach and high reliability. 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.

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Tong, Yi-Hua, Xi-Rong Zheng, You Yuan Zhang, Qiao-Mei Qin, Jing-Bo Ni, Tien Chinh Vu, and Nian-He Xia. "Schizostachyum dakrongense (Poaceae, Bambusoideae), a new species from Dakrong Nature Reserve, Vietnam." PhytoKeys 138 (January 10, 2020): 179–86. http://dx.doi.org/10.3897/phytokeys.138.39512.

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Schizostachyum dakrongense is a new species of woody bamboo from Dakrong Nature Reserve, Quang Tri Province, central Vietnam. It is closely related to S. hainanense but differs by its pseudospikelets having terminal rachilla segments with ciliate margin and 6 bracts; culm sheath with the base of the outer margin having a slight projection below its point of attachment at the node, as well as sheath blades usually less than half as long as the culm sheath proper; and leaf blades pale-puberulent and sparsely pilosulous on the abaxial surface. The new species is described and illustrated here.

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Cai, Zhuo-Yu, Yi-Hua Tong, Tien-Chinh Vu, Jing-Bo Ni, and Nian-He Xia. "Schizostachyum dakrongense (Poaceae, Bambusoideae), a new species from Dakrong Nature Reserve, Vietnam." PhytoKeys 138 (January 10, 2020): 179–86. http://dx.doi.org/10.3897/phytokeys.138.39623.

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Schizostachyum dakrongense is a new species of woody bamboo from Dakrong Nature Reserve, Quang Tri Province, central Vietnam. It is closely related to S. hainanense but differs by its pseudospikelets having terminal rachilla segments with ciliate margin and 6 bracts; culm sheath with the base of the outer margin having a slight projection below its point of attachment at the node, as well as sheath blades usually less than half as long as the culm sheath proper; and leaf blades pale-puberulent and sparsely pilosulous on the abaxial surface. The new species is described and illustrated here.

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Nguyen, Ha Hong, and Trung Thanh Nguyen. "Factors Affecting the Income of Vietnamese Peasants: A Case in Tra Vinh Province." Research in World Economy 10, no. 1 (June 9, 2019): 54. http://dx.doi.org/10.5430/rwe.v10n1p54.

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Studying the factors affecting the income of Vietnamese peasants: A case in Tra Vinh province, by data collection method of 170 peasants’ households in 4 districts: Cau Ngang, Cang Long, Chau Thanh and Tieu Can in Tra Vinh province, Vietnam. The authors use multivariate regression analysis method. The study has found the factors such as gender of households’s heads, ages of households’ heads, education levels, the number of family members, dependency rates, application of technical advances, production areas affecting the income of peasants in these areas. Since then, the study has implied a policy to improve the income of peasants. For example, it could be very important for us to focus on training science and technology in agriculture, diversify crops and livestock in agriculture, improve techniques and enhance education levels to increase income for peasants in Tra Vinh province in the future.

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Montesano, Michael J. "War Comes to Long An, the Classic We Hardly Know?" Journal of Vietnamese Studies 6, no. 1 (2011): 87–122. http://dx.doi.org/10.1525/vs.2011.6.1.87.

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First published in 1972, Jeffrey Race's War Comes to Long An has never gone out of print. It has now been republished in an updated and expanded edition. While highly regarded among Southeast Asianists as a classic account of communist success in winning control of a strategic province in the Mekong Delta from the government of the Republic of Vietnam, War Comes to Long An is also a work of innovative social science. Attention to the book's long ignored social science and to the rational-choice foundations of its analysis opens up new perspectives on the “Scott-Popkin debate.” It suggests the need for reconsideration of the value of rational-choice approaches to the study not only of Southeast Asian politics but also of the modern history of the region, to which War Comes to Long An speaks in previously overlooked ways.

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Pham, Mai Quynh. "Estimation of a longan stink bug, Tessaratoma papillosa in Son La Province, Vietnam." Journal of Vietnamese Environment 8, no. 2 (November 1, 2016): 129–34. http://dx.doi.org/10.13141/jve.vol8.no2.pp129-134.

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Many insects are considered as potential sources of food for humans because of their high content of protein, fat, minerals and vitamins. Tessaratoma papillosa Drury, a stink bug of longan tree has long been consumed by many people in Vietnam as a supplemental source of nutrition. This insect is one of the most severe pests of longan tree. The use of this insect as supplementary nutrient could actively reduce the pests on longans, contributing to increase productivity and quality of longan fruit. The aim of this paper is to estimate the volume of mature and young Tessaratoma papillosa on longan trees in Son La Province, Vietnam. Nhiều loài côn trùng được coi là nguồn thực phẩm tiềm năng của con người vì chúng có chứa hàm lượng cao protein, chất béo, chất khoáng và vitamin. Loài bọ xít nhãn Tessaratoma papillosa Drury, từ lâu đã được nhiều người dân ở Việt Nam sử dụng như là một nguồn thực phẩm bổ sung dinh dưỡng. Loài bọ xít nhãn là một trong những loài gây hại nghiêm trọng nhất đối với cây nhãn. Việc sử dụng loài côn trùng này không những bổ sung chất dinh dưỡng cho con người mà còn góp phần chủ động giảm loài sâu hại trên nhãn, góp phần tăng năng suất và chất lượng trái cây nhãn. Mục đích của bài viết này là để ước tính khối lượng trưởng thành và ấu trùng loài Tessaratoma papillosa trên cây nhãn ở tỉnh Sơn La, Việt Nam.

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Nguyen, Phan, and Lobo. "Debunking the Myth of Foreign Direct Investment Toward Long-Term Sustainability of a Developing Country: A Transaction Cost Analysis Approach." Sustainability 11, no. 17 (August 22, 2019): 4569. http://dx.doi.org/10.3390/su11174569.

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This study focuses on the relationship between foreign direct investment (FDI) and sustainability in a developing host country, i.e., Vietnam, using the transaction cost approach. Secondary panel data were obtained from 62 provinces in Vietnam for the period between the years of 2010 and 2016. The analysis of the data was performed using the fixed effects regression model, which yielded interesting and controversial findings. Essentially, it was demonstrated that the FDI made by enterprises and the subsequent employment that it generated had several positive and significant influences on the long-term sustainability of provinces in Vietnam. However, the downside was that the value of fixed assets and long-term investment of FDI projects in conjunction with the size of the provinces negatively influenced their long-term sustainability. The findings of this study have important academic and practical implications. We propose some policy changes that would considerably improve the efficacy and effectiveness of FDI. This, in turn, will certainly enhance the long-term sustainability of host countries, especially developing ones.

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NAZAROV, ROMAN, NIKOLAY A. POYARKOV, NIKOLAI L. ORLOV, TRUNG MY PHUNG, TAO THIEN NGUYEN, DUC MINH HOANG, and THOMAS ZIEGLER. "Two new cryptic species of the Cyrtodactylus irregularis complex (Squamata: Gekkonidae) from southern Vietnam." Zootaxa 3302, no. 1 (May 7, 2012): 1. http://dx.doi.org/10.11646/zootaxa.3302.1.1.

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We describe two new species of the Cyrtodactylus irregularis complex both based on phylogenetic analysis of 654 bp of COImtDNA gene and morphological analyses of voucher specimens from Binh Phuoc and Lam Dong provinces, southern Vietnam.Cyrtodactylus bugiamapensis sp. nov. is described from the monsoon tropical forests of Bu Gia Map National Park, BinhPhuoc Province, and is distinguished from the remaining representatives of the C. irregularis complex by a combination of thefollowing characters: (1) size medium, with a maximum SVL of 76.8 mm; (2) original tail relatively thin, longer than body; (3)presence of enlarged femoral scales without femoral pores; (4) preclocal groove lacking; (5) 36–46 longitudinal rows of ventralscales at midbody; (6) males with 7–11 precloacal pores in an angular continuous series; (7) absence of enlarged subcaudals;(8) dorsal pattern consisting of a dark neck band which can be medially divided, and irregular dark brown spots with brightwhite edges. Cyrtodactylus bidoupimontis sp. nov. is described from mountainous evergreen tropical forests of Bidoup – NuiBa National Park, Lam Dong Province, and is most similar to C. irregularis sensu stricto from which it is distinguished by acombination of the following characters: (1) absence of enlarged, strongly keeled conical tubercles on the dorsal tail-base; (2)presence of flat rounded smooth to weakly keeled dorsal tubercles; (3) pallid dorsal head surface pattern lacking distinct darkbrown irregular spots with light edges; and (4) elongated limbs. Phylogenetic analyses revealed the presence of a number ofcryptic allopatric species within the C. irregularis complex. Long geological history and complicated relief of the Lang Bianplateau and surrounding areas might have shaped the present diversity within the C. irregularis complex. COI DNA-barcoding appears to be a useful tool to reveal cryptic diversity within the genus Cyrtodactylus.

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Anh, Nguyen Quang Duc, Hitoshi Tanaka, Nguyen Xuan Tinh, and Nguyen Trung Viet. "Sand spit morphological evolution at tidal inlets by using satellite images analysis: Two case studies in Vietnam." Journal of Science and Technology in Civil Engineering (STCE) - NUCE 14, no. 2 (April 17, 2020): 17–27. http://dx.doi.org/10.31814/stce.nuce2020-14(2)-02.

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This paper presents the long-term morphological changes of the sand spits at the Ken Inlet in Ha Tinh Province and Phan Inlet in Binh Thuan Province, Vietnam. The analysis results show that the sand spit morphology at Ken Inlet was drastically changed before the completion of the Da Bac sluice gate construction in 1992, after that the sand spit elongation rate became stable at a rate of about 68 meters per year. Meanwhile, the sand spit at Phan Inlet was breached three times during the winter months of 1990-1991, 1998-1999 and 2014-2015. Moreover, the results of remote sensing image analysis also show that after the sand spit have been breached, it continued elongating at a relatively stable rate of 170÷200 meters per year. Based on the analytical model by Kraus (1999) for predicting the sand spit elongation, the estimated long-shore sediment transport rates of Phan Inlet and Ken Inlet are 145,000 m3/year and 133,500 m3/year, respectively. These longshore sediment transport rates are a main contribution for the sand spit elongation in these study areas. Keywords: sand spits; tidal Inlet; breaching; elongation; Landsat images; Google Earth images.

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Le, Trang Thi, Doan Dang Phan, Bao Dang Khoa Huynh, Van Tho Le, and Van Tu Nguyen. "Phytoplankton diversity and its relation to the physicochemical parameters in main water bodies of Vinh Long province, Vietnam." Journal of Vietnamese Environment 11, no. 2 (August 14, 2019): 83–90. http://dx.doi.org/10.13141/jve.vol11.no2.pp83-90.

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Phytoplankton samples were collected in 2016 during the dry and rainy seasons at nine sampling sites in Vinh Long province, Vietnam. Some basic environment parameters such as temperature, pH, dissolved oxygen, nitrate and phosphate were measured and a total of 209 phytoplankton species (six phyla, 96 genera) were identified. The phylum that had the greatest number of species was Bacillariophyta (82 species), followed by Chlorophyta (61 species), Cyanophyta (39 species), Euglenophyta (21 species), Chrysophyta (three species) and Dinophyta (three3 species). The phytoplankton density ranged from 4,128 to 123,029 cells/liter. The dominant algae recorded in the study area include Microcystis aeruginosa, Merismopedia glauca, Oscillatoria perornata, Jaaginema sp., Planktothrix agardhii, Coscinodiscus subtilis, Melosira granulata. In particular, Microcystis aeruginosa was the most density dominant species in the total number of sampling sites during the dry season survey, and this species was classified as a group producing toxins harmful to the environment. Surface water quality, according to QCVN 08: 2015/BTNMT was classified into Column A1 for pH, nitrate and Column B1 for dissolved oxygen, and Column B2 for phosphate. Phytoplankton community structure and environmental factors changed substantially between dry and rainy seasons. A Pearson (r) correlation coefficient was used for the relative analysis. The results indicated that the number of phytoplankton species were a significantly positive correlation with pH, dissolved oxygen and nitrate in the rainy season. The phytoplankton abundance was uncorrelated with environmental factors in both seasons. Các mẫu thực vật phù du được thu thập trong năm 2016 (mùa khô và mùa mưa) tại 9 vị trí ở tỉnh Vĩnh Long, Việt Nam. Một số thông số môi trường như nhiệt độ, pH, oxy hòa tan, nitrat và phốt phát được đo ngay tại hiện trường. Tổng cộng 209 loài thực vật phù du được ghi nhận (6 ngành, 96 chi). Số lượng loài cao nhất là tảo Silic (82 loài), kế đến là tảo Lục (61 loài), tảo Lam (39 loài), tảo Mắt (21 loài), tảo Vàng ánh (3 loài) và tảo Giáp (3 loài). Mật độ thực vật phù du dao động từ 4.128 đến 123.029 tế bào/ lít. Các loài ưu thế ghi nhận được ở khu vực nghiên cứu gồm có: Microcystis aeruginosa, Merismopedia glauca, Oscillatoria perornata, Jaaginema sp., Planktothrix agardhii; Coscinodiscus subtilis, Melosira granulata. Trong đó, loài Microcystis aeruginosa chiếm ưu thế nhiều nhất trên tổng số điểm thu mẫu trong đợt khảo sát mùa khô, đồng thời loài này được xếp vào nhóm sản sinh độc tố gây hại cho môi trường. Chất lượng nước mặt theo QCVN 08:2015/BTNMT được xếp vào loại A1 đối với thông số pH, nitrat và loại B1 đối với thông số oxy hòa tan, và loại B2 đối với phốt phát. Cấu trúc quần xã thực vât nổi và các yếu tố môi trường thay đổi đáng kể giữa mùa mưa và mừa khô. Hệ số tương quan Pearson (r) được dùng để phân tích. Kết quả cho thấy số lượng thực vật phù du có tương quan thuận với pH, oxy hòa tan và nitrat trong mùa mưa và có ý nghĩa về mặt thống kê. Mật độ của thực vật phù du không tương quan với các yếu tố môi trường trong cả hai mùa.

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Hieu, Nguyen, Hoang Thi Thu Huong, Luc Hens, Do Trung Hieu, Doan Thu Phuong, and Pham Xuan Canh. "Sustainable livelihoods development by utilization of geomorphological resources in the Bai Tu Long Bay, Quang Ninh Province, Vietnam." Environment, Development and Sustainability 20, no. 6 (June 29, 2017): 2463–85. http://dx.doi.org/10.1007/s10668-017-9999-4.

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Maclean, Ken. "In Search of Kilometer Zero: Digital Archives, Technological Revisionism, and the Sino-Vietnamese Border." Comparative Studies in Society and History 50, no. 4 (September 23, 2008): 862–94. http://dx.doi.org/10.1017/s0010417508000376.

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Bùi Minh Quốc left for the border in late 2001. His clandestine trip, which took nearly a month to complete on a 50cc Honda Cub motorcycle, retraced the perimeter of Việt Bắc, the name for the mountainous region that stretches across ten provinces in northeastern Vietnam. Quốc, a poet of considerable repute, documented the highpoints of the ride in verse. But the region’s rugged beauty, which holds a prominent place in official histories of the anti-colonial struggle against the French and those who collaborated with them, was not the real reason for his quest. Nor was the region’s more recent reincarnation as a socialist battleground during the Third Indochina War with the People’s Republic of China, a conflict that killed and wounded an estimated one hundred thousand people in the space of a month. Instead, Quốc’s self-appointed task was to find the current location of “Kilometer Zero” (Cấy số không) along the Sino-Vietnamese border—a difficult proposition since it appears nowhere on official maps of the country. Nonetheless, the toponym is commonly used to refer to the precise spot in Lạng Sơn Province where National Highway 1A, the only paved road to traverse the entire length of Vietnam, begins its long journey south.

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SAVINOV, IVAN A., MAXIM S. NURALIEV, ANDREY N. KUZNETSOV, SVETLANA P. KUZNETSOVA, HONG TRUONG LUU, HUU DANG TRAN, and HUU THANH LUONG. "Microtropis cerocarpa (Celastraceae), a new species from southern Vietnam." Phytotaxa 387, no. 2 (January 8, 2019): 140–48. http://dx.doi.org/10.11646/phytotaxa.387.2.6.

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Microtropis cerocarpa, a new species of Celastraceae, is described and illustrated. The species was discovered in 2012 during a botanical survey of the Chu Yang Sin National Park (Dak Lak province, southern Vietnam); additional collections were obtained there in 2018. Microtropis cerocarpa possesses dense glomerate sessile inflorescence with sessile flowers which allows placing this species into sect. Microtropis. Within this section it is most similar to M. obscurinervia, M. rhynchocarpa and M. wui. The new species differs from related species mainly by large thick leaves 23.5–39 cm long and 13–22 cm wide with very short petiole (subsessile) and cordate base, fruit with short rostrum of 1–2 mm long at apex, and immature fruit surface with a pronounced white wax coating in the form of granules. Microtropis cerocarpa is an easily recognized tree with remarkable robust habit and large leaves. A description of the vegetation in the area inhabited by M. cerocarpa is provided. The data on species diversity of Microtropis in Vietnam are summarized and an identification key is compiled.

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Nguyen, Yen Hoang Thi, Masayuki Ueno, Takashi Zaitsu, Toai Nguyen, and Yoko Kawaguchi. "Early Childhood Caries and Risk Factors in Vietnam." Journal of Clinical Pediatric Dentistry 42, no. 3 (January 1, 2018): 173–81. http://dx.doi.org/10.17796/1053-4628-42.3.2.

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Objective: To investigate caries prevalence and examine its relationship with socioeconomic status and oral health behavior of Vietnamese kindergarten children. Study design: The study was carried out on 1,028 children aged 2–5 years in six kindergartens in Thua Thien Hue province, Vietnam. Information about socioeconomics and oral health behaviors was collected through a self-administered questionnaire, and oral health status by clinical dental examination. Results: Clinical dental examination found that overall caries prevalence and mean dmft were 89.1% and 9.32. Caries prevalence and mean dmft increased greatly from two years to three years old, and gradually developed from three years to five years old. A logistic regression revealed that caries had an inverse relationship with mothers' educational level and a positive relationship with the habit of retaining food in the mouth for a long time in two-year-old children. Prolonged breastfeeding, more frequent sweets consumption, no thumb sucking habit, and higher modified debris index score were the risk factors for caries among three-to-five-year-old children. Conclusions: This study indicated a high prevalence of caries and related risk factors such as low mother's educational level and inappropriate oral health behavior among kindergarten children in Vietnam.

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Dang, Anh, Sidney Goldstein, and James McNally. "Internal Migration and Development in Vietnam." International Migration Review 31, no. 2 (June 1997): 312–37. http://dx.doi.org/10.1177/019791839703100203.

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This article is a step toward understanding the nature of the interrelationship between population movement and development as Vietnam continues to move toward intensive market reforms. Underutilized tabulations from the 1989 census and national statistical data on characteristics of provinces were explored to gain insights into the roles of development in interprovincial migration within a context of institutional intervention. The overall results of OLS regression indicate that more developed provinces attracted higher volumes of inmigrants, whereas less developed provinces produced more outmigrants, other things being equal. Most of the migrants, especially females, moved to more urbanized and industrialized areas, regardless of their origin home provinces. The government's organized population movements towards remote resettlement areas were costly from the view of the migrants. The study results suggest the importance of interpreting population movement in Vietnam within the broader context of its current transition to a market economy. Government key-policy deliberations must include careful attention to how migration relates to long-term national development.

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Gusev, Evgeniy Sergeevich. "A new species of the genus Mallomonas (Synurales, Chrysophyceae), Mallomonas fimbriata, sp. nov." Phytotaxa 195, no. 4 (January 30, 2015): 291. http://dx.doi.org/10.11646/phytotaxa.195.4.4.

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Mallomonas fimbriata, sp. nov. is described from bog pool, located in Cam Ranh Peninsula, Khanh Hoa Province, Central Vietnam. The description is based on silica-scale morphology studied by means of transmission and scanning electron microscopy. New species has 3 types of scales: oval body scales, caudal ones with robust, long, forward pointing spines and elongated, widened to distal part apical scales. Scales are thick, 3-layered, with inner reticulation. Mallomonas fimbriata and the similar M. fenestrata form a special group with unique features of scales structure close to the sections Retrorsae and Quadratae.

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Uetani, Miyuki, Masamine Jimba, Teruyuki Niimi, Nagato Natsume, Takeshi Katsuki, Le Thi Thanh Xuan, and Susumu Wakai. "Effects of a Long-Term Volunteer Surgical Program in a Developing Country: The Case in Vietnam from 1993 to 2003." Cleft Palate-Craniofacial Journal 43, no. 5 (September 2006): 616–19. http://dx.doi.org/10.1597/05-120.

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Objective: This study evaluates the activities of the Japanese Cleft Palate Foundation from 1993 to 2003 in southern Vietnam. Design: We assessed trends associated with patient age at first operation for primary lip repair and palate repair by using medical records of the patients. Participants: This study consisted of 790 patients with nonsyndromic cleft lip and/or palate (CL/P). Results: The median patient age for lip repair was reduced from 14.0 years in 1993 to 1.3 years by 2003. For palate repair, the median age was reduced from 13.5 years in 1993 to 5.0 years in 1999 through 2003. The age distributions of both lip and palate repair in the later years became smaller than the age distributions in 1993. The number of adult patients declined throughout the period. Conclusions: The Japanese Cleft Palate Foundation contributed to lowering the age at first operation for CL/P and to reducing the number of adult patients in Ben Tre province, southern Vietnam. However, appropriate supports will be necessary to maintain CL/P treatment and to improve locally supported health care for patients with CL/P.

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Chung, Truong Van. "The Conversion to Protestantism: A Challenge in Ethnic and Religious Life of Brahmanism Cham People in Ninh Thuan Province, Vietnam." Tattva - Journal of Philosophy 5, no. 2 (July 30, 2015): 87–100. http://dx.doi.org/10.12726/tjp.10.6.

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The Cham Balamon people in Vietnam are an ethnic group with long religious and cultural traditions, who give a great importance to preserving their own cultural identity through generations. However, in recent years there are many economic, cultural and social changes in the life of the Cham Balamon community. One of the significant changes in the spiritual life of this community is the conversion of belief from Hinduism to Christianity. We think that this is an outstanding problem that needs to be addressed by formal and comprehensive scientific research projects. We have dispatched several research groups to conduct field trips, deep interviews and sociological surveys on the spiritual life of the Cham Balamon community. This paper is the first step of those researches pointing out the problems and challenges to the Cham Balamon community in Ninh Thuan Province, Vietnam. These are cultural and belief conflicts among people in the community or even among family members. However, we would predict that the biggest challenge is the risk of losing cultural identities that the Cham Balamon community is facing today due to religious conversion

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Thanh Giao, Nguyen. "Investigating Pesticide Use and Management in King Orange (Citrus nobilis) Farming in Vung Liem District, Vinh Long Province, Vietnam." International Journal of Environment, Agriculture and Biotechnology 6, no. 1 (2021): 210–15. http://dx.doi.org/10.22161/ijeab.61.25.

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Ngo, Thi Phuong Lan, and Ngoc Tho Nguyen. "Continuity and Transformation of Rural Communal Temples in Vietnam: A Case Study of Tân Chánh Village, Long An Province." International Journal of Asia Pacific Studies 17, no. 2 (July 30, 2021): 249–82. http://dx.doi.org/10.21315/ijaps2021.17.2.10.

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Vietnamese communal temples (đình làng) were primarily established with two functions: (1) as a state-patronised institution to organise and control the village politically and culturally and (2) as a place of worship of village deities and meritorious predecessors. Both functions interact and complement each other – in many cases, the second serves as both a “means” and “technique” to deploy the first. However, nowadays the administrative role is no longer available; instead, the spiritual aspects are on the rise as a response to the increasing interaction of Buddhism, Caodaism, and folk beliefs as well as the impact of economic development and urban migration. Village elders learn to organise the temple into a communal socio-cultural institution, whereby cross-village temples have formed a cultural nexus of “power”. This study finds that while several transformed into the form of “temple of heroes”, Tân Chánh temple has been mobilised and transformed into a civic “religious and socio-cultural centre” at the grassroots level. The socio-economic background of the area has caused such transformation. While the practical demand for communication and emotional exchanges among village members vividly ensures the continuity of the temple’s tradition, the loss of direct state control paves the way for its transformation. Both continuity and transformation govern the current religious activities of Tân Chánh temple but there is always a challenge to compromise and integrate these two directions. However, the remaining function of god worship by which rituals are performed as “cultural agents” still binds the villagers together and gives them access to crossing boundaries.

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Nguyen, Duc Thien, Van Trung Tran, Van Tam Ngo, and Van Phi Ho. "A real-time flooding monitoring and warning system using LoRa technology in Kone and Ha Thanh river basin, Binh Dinh Province." Journal of Science, Quy Nhon University 14, no. 5 (October 29, 2020): 69–78. http://dx.doi.org/10.52111/qnjs.2021.14508.

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In the context of the recent climate change, flooding has been causing serious damages to the human lives and their properties in the world in general, Vietnam in particular, including Binh Dinh province. Therefore, it is pivotal for local governments to build up real-time flooding monitoring and warning systems supported by modern technologies. Addressing to this aim, in this paper, we will study and design a new flooding monitoring and warning system based on a combination of the Long Range (LoRa) teachnology and an open-source platform of Thingsboard. The proposed system allows collecting effectively and sufficiently data from different locations on rivers in a timely manner, thus supporting the early flooding prediction and forecast processes. A testbed of the proposed system is then deployed in the Kone and Ha Thanh river basin, Binh Dinh Province.

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Journal articles on the topic 'Long An (Vietnam : Province)'

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