Distribution characteristics

Stingless bees are distributed in tropical and subtropical regions. There are over 16,000 species of stingless bees around the world, among which, 42 species are from Asia (Kerr & Maule, 1964). In this study, the biological characteristics of Tetrigonilla collina, as a representative for Southeast Asian stingless bees, were observed and recorded.

10p vibecca 01-10-2024 3 2   Download

To describe patients' clinical and paraclinical characteristics with closed distal radius fractures and evaluate the surgical outcomes of distal radius fracture fixation using locking plates at the 108 Military Central Hospital.

5p vibecca 01-10-2024 2 2   Download

Microplastics present in high density in coastal marine environments have been reported by many published works worldwide. Microplastic presence poses a major threat to all organisms that come into direct contact with them in the aquatic environment because they are non-biodegradable and adsorbable to some toxic substances.

8p vikwong 29-09-2024 2 1   Download

Although Cryptococcal infection is worldwide distribution, it is more seen in the immunocompromised patients. Cryptococcus neoformans is the most common central neurvous system fungal pathogen in HIV infected patients. In this paper we present an immunocompromised HIV infected case of C. neoformans meningitis with clinical features and imaging characteristics by MR image.

4p vifaye 20-09-2024 9 1   Download

The Red River Delta (RRD) is the second largest delta in Vietnam and is a significant economic zone in the country, encompassing important cities and economic zones. Geologically, the delta consists of clay layers distributed all over its area, which strongly impact the foundation designs of the infrastructure system (e.g., highways, industrial parks, harbors).

17p vifaye 20-09-2024 4 1   Download

This study has established and calibrated a three-dimensional system model with a combination of hydraulics-waves and suspended sediment transport with measured data in the study area. Based on the calculated scenarios for the flood and the dry seasons, the results show the occurrence of MTZs in the riparian zone of the Mekong river with typical suspended sediment concentrations (SSC) ranging from 0.04–1.0 kg/m3 dry season and 0.2–1.1 kg/m3 flood season.

18p dianmotminh02 03-05-2024 5 2   Download

In this work, the free vibration analysis of Timoshenko microbeams made of the Functionally Graded Material (FGM) on the Winkler–Paternak elastic foundation based on the Modified Coupled Stress Theory (MCST) is investigated. Material characteristics of the beam vary throughout the thickness according to the power distribution and are estimated though Mori–Tanaka, Hashin–Shtrikman and Voigt homogenization techniques.

13p dianmotminh02 03-05-2024 9 3   Download

Transtensional faults are well developed in the S Block of the South Asia area, which have an important impact on the hydrocarbon accumulation. However, the transtensional fault structure is very complex. Based on drilling and seismic data interpretation results, faults are divided into three typical types in the Lower Cretaceous, which can help to understand the complex fault system. The main faults are distributed in the NNW-SSE direction and parallel arrangement with dextral strike-slip shear characteristics, which determines the development of the tectonic belt.

17p tanmocphong 29-01-2022 7 1   Download

Kestanbol geothermal field is located in northwestern Turkey and is one of the highest temperature geothermal fields in the Biga Peninsula. In this study, one geothermal well, two geothermal springs, and two cold springs were monitored for one year in Kestanbol geothermal field to determine hydrogeochemical and isotopic characteristics. Additionally, any possible relationship between seismic activity and variations in the hydrochemistry of geothermal water was investigated.

22p tanmocphong 29-01-2022 17 1   Download

The tectonic and structural properties of Erzurum and its surroundings have been investigated by evaluating the seismotectonic b - value, magnetic anomaly, edge detection analysis (total horizontal derivative (THDR) and tilt angle (TA)), Curie Point Depth (CPD), P-wave velocity (Vp), and Vp / Vs (S - wave velocity) ratio and by imaging the regional distributions of these parameters. For this purpose, all parameters have been combined to be able to reveal the new useful results on the study region and are presented for different locations and depths.

24p tanmocphong 29-01-2022 26 2   Download

Researching objectives: Describing some biological characteristics and distribution of Zingiber and Hedychium species from north-central Vietnam; determining the essential oil chemical composition; antimicrobial and antimosquito larvae activities of essential oils of some Zingiber and Hedychium species from north-central Vietnam.

27p beloveinhouse01 15-08-2021 28 5   Download

Thesis objectives: Evaluating the distribution of morphological characteristics, building a distribution map of the population of P. trimera and some species of the genus Paramignya; determining the genetic relationship of the P. trimera population by SSR markers; identification of DNA barcodes for identification of P. trimera; developed the protocol of in vitro micropropagation of P. trimera collected in Khanh Hoa, Vietnam.

27p beloveinhouse01 15-08-2021 20 4   Download

Immediate objective: Identification of the seaweed species composition and its distribution characteristics; evaluation of economic potential seaweed species to establish and manage its exploitation and conservation areas in Phu Yen province.

25p beloveinhouse01 15-08-2021 29 3   Download

By reviewing worldwide literature, this paper aimed to systematically collate available information about the species Cunninghamia lanceolata. Based on the findings of the review, including the species’ floral characteristics; updated distribution; historical knowledge and heritage; growth and factors influencing its forests; soil nutrition and microbes; carbon storage; wood; and chemicals and essential oils, we have identified issues for consideration regarding the use of this species for big timber production in Vietnam.

11p chauchaungayxua12 09-07-2021 9 1   Download

Evaluating characteristics of beta-lactam resistance and distribution of genes encoding beta-lactamase of Escherichia coli and Klebsiella pneumoniae causing bloodstream infections at 108 Military Central Hospital (from October 2014 to march 2016).

27p kequaidan12 03-06-2021 21 4   Download

Aim of the research: The project is aimed to yield the composition and distribution of solitary wasps of the family Sphecidae in several provinces of the northwest part of Vietnam, new species to science and new species to Vietnam, and addition of some new biological, ecological, and behavioral characteristics of the mud dauber wasp S. madraspatanum. These results will be scientific base to next studies on the family Sphecida in the future.

26p extraenglish 24-05-2021 15 2   Download

The project is aimed to yield the composition and distribution of solitary wasps of the family Sphecidae in several provinces of the northwest part of Vietnam, new species to science and new species to Vietnam, and addition of some new biological, ecological, and behavioral characteristics of the mud dauber wasp S. madraspatanum. These results will be scientific base to next studies on the family Sphecida in the future.

26p capheviahe27 23-02-2021 19 3   Download

In this article, by analyzing bio-climatic characteristics of Phu Tho Province and comparing tea plant eco-biological requirements, the adaptability assessment of bioclimatic conditions of Phu Tho has been made.

10p larachdumlanat127 20-12-2020 8 2   Download

At a temperature of 300 K, both Ni and Cu atoms are crystallized into the face-centered cubic (FCC) and the hexagonal close-packed (HCP) phases, respectively. The mechanical characteristics of the sample at 300 K were also analyzed in detail through the determination of elastic modulus, number of atoms, and void distribution during the tensile process.

8p tamynhan5 10-12-2020 15 3   Download

Oribatid mites (Acari: Oribatida) are one of the most numerous and dominant groups of soil inhabitants that play an important role during soil formation and its biological processes. The paper presents a full list of oribatid mites known of Vietnam (excluding Astigmata) based on the collected and identified species as well as on literature records since 1967 to 2019.

71p koxih_kothogmih5 04-09-2020 19 2   Download