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Additional records of the genus acropimpla townes (hymenoptera: ichneumonidae: pimplinae) from Viet Nam and an updated key to speciesDISCUSSION In neighboring countries of Vietnam, 16 species of Acropimpla have been known from China (He et al., 1996; Liu et al., 2010; Liu & He, 2013), whereas nine species have recently recorded from Thailand (Varga & Reshchikov, 2015), one species was reported from Laos (Gupta & Tikar 1976) and no one is known from Cambodia. Our new reco...
8 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 8 | Lượt tải: 0
Growth performance of hydrangea macrophylla ‘glowing embers’ on culture medium with different macro - Element concentrations and culture conditionsRegarding the net photosynthetic rate (Pn), Pn of PM treatment was remarkably low and almost constant from day 21 to day 42; whereas, Pn of PA treatment increased dramatically during this culture period (Fig. 7). The low net photosynthetic rate of the plants grown in vitro photomixotrophically might be due to low activity of rubisco (Gourt ...
11 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 6 | Lượt tải: 0
Đánh giá khả năng phân hủy Naphthalene và Pyrene của một số chủng vi khuẩn tía quang hợp tạo màng sinh họcBên cạnh đó, hiệu suất phân hủy pyrene của các chủng cũng rất tốt đều đạt trên 81%. Chủng PY2 có khả năng phân hủy pyrene cao nhất với hiệu suất lên tới 89,02% với nồng độ ban đầu là 250 ppm. Kết quả này cho thấy hiệu suất phân hủy pyrene của biofilm do các chủng VKTQH này tạo ra cao hơn nhiều so với các chủng vi khuẩn hiếu khí (Deng et al.,...
10 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 5 | Lượt tải: 0
The freshwater copepod genus mesocyclops (copepoda, cyclopoida, cyclopidae) in Viet NamFrom above comparison, the identification of M. leuckarti collected in Vietnam might be incorrect. This could be due to the quality limitation of microscope when Dang Ngoc Thanh et al. (1980) did this work. This kind of misidentifications has also been found in Shen and Tai (1979) for Mesocyclops species in China as reported by Guo (2000). T...
16 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 5 | Lượt tải: 0
Sponge’s biodiversity in the limestone islands in Viet Nam seaDistribution on different types of substrates Sponge is distributed over 6 types of bottom matter: Sand bottom, sand + gravel + rock, coral reef, mud + sand, clinging to organisms and other substrates. The analysis results showed that the highest number of sponge belongs to the coral reef bottom (48 species); the sand - gravel - rock bottom ...
9 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 6 | Lượt tải: 0
Intracellular reactive oxygen species scavenging effect of fucosterol isolated from the brown alga Sargassum crassifolium in Viet NamIntracellular ROS scavenging activity The intracellular ROS scavenging activity of test compound was evaluated by the fluorescence intensity resulting from converting reaction of DCFH-DA to fluorescent compound DCF. The effect of fucosterol on ROS level in H2O2 treated cells in comparison to negative control (DMSO 10%) was observed under fl...
8 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 5 | Lượt tải: 0
Secondary metabolites produced by marine actinomycetestreptomycessp G246Compound 7 was isolated as a white solid. Its ESI mass spectrum showed the pseudomolecular ion [M+H]+ at m/z 284. The 1H-NMR spectrum of 7 displayed signals of one singlet aromatic proton at δH 7.92(1H, s, H-8), a anomeric proton at δH 5.69 (1H, d, J = 6.0 Hz, H-1′) and a set of 5 protons of ribofuranose sugar moiety at ranging from δH3.52 to δH4...
8 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 8 | Lượt tải: 0
Effects of alcohol extract from defatted soybean meal on bile acid level, digestive enzyme activity and nutrient digestibility of pompano (trachinotus blochii)Cholecystokinin (CCK) has been known to stimulate release of exocrine pancreatic enzymes in yellowtail (Kofuji et al., 2007; Murashita et al., 2007, 2008), and also to contract the gallbladder to release bile juice in Atlantic salmon (Einarsson et al., 1997), rainbow trout (Aldman et al., 1992) and yellowtail (Murashita et al., 2007). The i...
11 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 7 | Lượt tải: 0
Distribution characteristics of temperature, salinity, chlorophyll-A, and sound speed in the Da Nang and Quy Nhon watersIn Quy Nhon transect, it is clearly seen that the sound velocity tends to fall gradually from the surface to the bottom and descends from the offshore to nearshore regions corresponding todepth. At the depth of about 40 m (station QN- 1, figure 5b) in the offshore area, there is a zone in which the sound velocity reaches the maximum value (1,...
6 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 7 | Lượt tải: 0
The DNA barcoding data and genetic distance of leaf beetles (coleoptera, chrysomelidae) in Viet NamDISCUSSION DNA barcoding is a useful tool for identifying species, providing information on specimens in different regions on the world. In this study, 16 DNA barcoding sequences of nine species examined in this work were recorded for the first time from Vietnam and five species Aulacophora mouhoti, Aspidimorpha dorsata, Chiridopsis bowring...
7 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 6 | Lượt tải: 0
