Vietnam National University of Forestry (VNUF) was established according to the Decision No.127/CP dated on August 19, 1964 by the Prime Minister of Vietnam.Currently, there are over 16.000 students, including undergraduate and graduate, following 22 disciplines of undergraduate level, 6 majors of master level, and 4 majors of doctorate level.The main campus of VNUF is located in Xuan Mai Town, Chuong My District, Hanoi Capital. The second campus (established in 01/2008) is located in Trang Bom Town, Dong Nai Province..
The dhole Cuon alpinus was historically one of the most widespread large carnivores in Asia, but it has declined across its range as a result of habitat loss, hunting and prey depletion. There are few recent confirmed records of the species in Vietnam, and it has been reported as possibly extirpated. Here, we report a new camera-trap record of a dhole in Pu Hoat Nature Reserve, in Nghe An province, north-central Vietnam. To our knowledge, this is the first confirmed record of the dhole in Vietnam in > 20 years. We are unable to determine whether the record represents a vagrant animal or a remnant population. However, this new record should be viewed in the wider context of the species' decline across Vietnam. During 2014-2024, in addition to our study, 3,231 camera-traps were set in 1,657 stations across 31 sites that would have been within the species' historical range but the dhole was not recorded. We conclude that, despite this new record, the species is likely extirpated across most protected areas in Vietnam.
Background: Common bean (Phaseolus vulgaris L.) is an important leguminous vegetable crop but the lack of high yielding and stable varieties is the major constraint. Exploring genetic variability is essential for crop improvement programs. Considering this, the present study focused on assessing genetic variability and associations between yield and its contributing traits to enhance production efficiency. Methods: A two year experiment was carried out at the experimental farm of the Novosibirsk State Agrarian University during the cropping season of 2023 and 2024 to find out the genetic variability parameters, path coefficient and correlation studies in twenty six common bean genotypes. Result: The results revealed high variability among the tested genotypes. The values of phenotypic coefficient of variation (PCV) were greater as compared to the genotypic coefficient of variation (GCV) for all the traits. High heritability along with GAM% ( greater than 20%) was observed for number of nodes per stem (NNS), number of pods per plant (NPP), number of seeds per pod (NSP), seed yield per plant (SYP), hundred seed weight (HSW) and pod width (PL). Seed yield per plant (SYP) had positive genotypic and phenotypic correlation with DF (rg = 0.34 and rp = 0.34), NPP (rg = 0.64 and rp = 0.75), HSW (rg = 0.62 and rp = 0.7) and PL (rg = 0.35 and rp = 0.4). Positive direct effect on seed yield per plant (SYP) was exhibited by traits viz., number of pods per plant (NPP), hundred seed weight (HSW) and days to 50% flowering (DF) in path coefficient analysis.
Interspecific relationships among plants represent fundamental structural and quantitative attributes that critically influence the formation, organization, and evolutionary dynamics of plant communities. The analysis of these relationships provides essential theoretical foundations and methodological tools for deciphering the mechanisms of community stability and succession, as well as for informing ecological restoration and reconstruction practices. However, the specific mechanisms through which community stability emerges in tropical forest ecosystems remain inadequately elucidated. This study investigated patterns of interspecific association and correlation, as well as community stability, in evergreen and semi-deciduous forests within the Nui Cau-Dau Tieng Protection Forest in southern Vietnam. Using data from 27 systematically surveyed sample plots, each covering 0.1 ha and containing a total of 2475 individual trees, an integrated analytical approach was applied. This approach incorporated the variance ratio method, chi-square tests, Pearson and Spearman correlation analyses, and Godron’s method. The findings revealed a significantly higher proportion of positive interspecific associations in the evergreen forest (68.33
Traditional wood adhesives are mainly derived from non-renewable fossil resources, raising sustainability concerns. As a sustainable alternative, biomass-based adhesives have attracted attention due to their biodegradability and renewability; however, their poor water resistance and limited bond strength restrict broader applications. In this study, a bio-based plywood adhesive was developed from sorbitol and citric acid (CA) via esterification and characterized using FTIR, TGA/DTG, and SEM. The effects of sorbitol-to-citric acid (Sor:CA) molar ratio and reaction time on curing behavior and adhesive performance were evaluated. Increasing the Sor:CA molar ratio was more effective in enhancing the shear strength and water resistance of plywood than extending the reaction time. At a Sor:CA molar ratio of 1:3 and a reaction time of 60 min, the dry and wet shear strengths best satisfied the standard requirement (>= 0.7 MPa, GB/T 9846-2015), suggesting that this fully bio-based adhesive may be a viable option for sustainable industrial applications.
