New records and updated list of species in Gobiidae in the Hoi estuary of Ma River, Thanh Hoa province, Vietnam

Fieldwork in the Hoi estuary area of the Ma River has recorded nine species of Gobiidae. Three of these species are recorded for the first time in the study area, including Acentrogobius caninus (Valenciennes, 1837), Glossogobius olivaceus (Temminck & Schlegel, 1845), and Oxyurichthys papuensis (Valenciennes, 1837). We update the list of gobiid species in the Hoi estuary; it now includes 18 species

Drought stress - related functional characterization of transcription factor GmNAC085 in soybean

Studies on soybean GmNAC085 transcription factor revealed that the gene expression in plants was induced by water shortage treatments and its overexpression in the model plant Arabidopsis displayed improved plant tolerance characteristics towards drought stress. In this study, we continued analyzing the biological functions of GmNAC085 using transgenic soybean system overexpressing GmNAC085 gene, by targeting at a number of plant physiological features and biochemical activities in response to limited water growing condition. Compared to the wild-type, the transgenic line demonstrated that it possessed stress tolerance characters, including enhanced elongation of taproot, minimized reduction of shoot growth, lower intracellular H2O2 content and stronger peroxidase enzyme activity under drought condition. The results of this study therefore suggest the transgenic plants had better drought tolerance and the GmNAC085 plays important role in aiding plants to cope with water deficit condition, probably via regulating the growth of roots and shoots, and activities of reactive-oxygen-species- scavenging enzymes

INVESTIGATING THE EXPERIENCES OF STUDENTS WITH DISABILITIES WITH E-LEARNING DURING THE COVID-19 PANDEMIC IN VIETNAMESE HIGHER EDUCATION

This study uses a mixed-methods approach to investigate the experiences of Vietnamese university students with disabilities (visual/mobility impairments) with e-learning as a consequence of emergency remote teaching during the COVID-19 pandemic. An analysis of the ideas of 20 surveyed students with disabilities at eight universities in Ho Chi Minh City and six students interviewed afterward shows that students can change their study habits to adapt to e-learning and to enjoy this model of learning. However, the participants revealed that they also want to experience face-to-face learning so that they can interact with their lecturers and peers more effectively and in more diverse ways, as well as assimilate lectures more easily. Furthermore, the research shows that various adjustments should be made by system designers, universities, and lecturers to make e-learning friendlier to disabled students. The recommended adjustments include designing easy-to-use learning tools and platforms, providing lecturers with the necessary tools and facilities to design lessons appropriate for all students, providing psychological and technical support for disabled students, choosing user-friendly learning applications and platforms, providing students with suitable learning resources, and modifying testing and assessment methods

The 3-3-1 Model with Arbitrarily Charged Leptons

The gauge  model based on $\mathrm{SU}(3)_C\otimes \mathrm{SU}(3)_L\otimes \mathrm{U}(1)_X$  group with arbitrarily electric charged exotic leptons is presented. The mass eigenvalues and eigenstates for  neutral gauge bosons are presented in the general form. We show that in the 3-3-1 models, there always exists triple Higgs self-coupling. The lepton number operator is also presented

NEW RECORDS OF DOPASIA GRACILIS (SQUAMATA: ANGUIDAE) IN BACH MA NATIONAL PARK, THUA THIEN-HUE PROVINCE

This article describes the morphological characteristics of Dopasia gracilis (Gray, 1845) from Bach Ma National Park, Thua Thien-Hue province. The number of specimens in Bach Ma is bigger compared to description of Smith in 1935, and also Nguyen et al. in 2011. In Vietnam, D. gracilis has been reported from the following provinces: Cao Bang, Yen Bai, Ha Giang, Quang Binh, Quang Ngai and Gia Lai. So, in Bach Ma National Park it is the first record of this species distribution.NOI ÎNREGISTRĂRI ALE DOPASIA GRACILIS (SQUAMATA: ANGUIDAE) ÎN PARCUL NAȚIONAL BACH MA, PROVINCIA THUA THIEN-HUEÎn articol sunt descrise caracteristicile morfologice ale speciei Dopasia gracilis (Gray, 1845) din Parcul Național Bach Ma, provincia Thua Thien-Hue. Numărul specimenelor din Bach Ma este cu mult mai mare în comparație cu descrierea elaborată de Smith în 1935 şi de Nguyen et al. în 2011. În Vietnam, D. gracilis a fost raportat în următoarele provincii: Cao Bang, Yen Bai, Ha Giang, Quang Binh, Quang Ngai și Gia Lai. Deci, în Parcul Naţional Bach Ma distribuția acestei specii este înregistrată pentru prima dată.</p

Phenomenology of the Reduced Minimal 3-3-1 Model

The detailed analysis of the gauge model based on $\mathrm{SU}(3)_C\otimes \mathrm{SU}(3)_L \otimes \mathrm{U}(1)_X$ group with minimal content of lepton and Higgs is presented. It is shown that with just two Higgs triplets, all fermions and gauge bosons can get correct   masses. The advantage of the model under consideration is that a huge number of free parameters is reduced, and the model's predictiveness is much improved

Synthesis of gelatin stabilized gold nanoparticles with seed particles enlargement by gamma Co-60 irradiation

Gold nanoparticles (AuNPs) with size from 13 to ~36 nm were synthesized by γ-irradiation method using gelatin as stabilizer. The AuNPs with controllable size were prepared using various concentration of Au3+ from 0.5 to 2 mM and seed particle enlargement with different ratios of [Au3+]/[Auo] up to 50. Maximum absorption wavelength (λmax) was measured by UV-Vis spectroscopy, and particle size was determined from TEM images. Results showed that the size of AuNPs increased with the Au3+ concentration. The seed enlargement approach is efficient to control the size of AuNPs. The value of λmax shifted from 527.5 nm (seed particles) to 537.5 nm, and the size of AuNPs increased from 13 nm (seed particles) to ~36 nm for concentration ratio of [Au3+]/[Auo] up to 40. Thus, γ-irradiation method is favorable for production of AuNPs with controllable size and high purity. The AuNPs/gelatin synthesized by γ-irradiation with the advantages of environmental friendly and mass production process may be potentially promising for applications in medicines, cosmetics and in other fields as well. Keywords. Gold, Nanoparticles, Gelatin, γ-irradiation