Academia Journal of Biology
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Study on conditions of hydrolysis green seaweed Chaetomorpha limum by enzyme and application of inbioethanol production
Academia Journal of Biology - Tập 38 Số 2 - 2016
Chaetomorpha linum seaweed composes a high carbohydrate content, various types of polysaccharides, with 38% cellulose in material. In our paper, the material from Ch. linum was treated by enzyme L Visocozyme and we found optimized hydrolysis conditions, vis. enzyme concentration: 0.85 ml/g (42.5 IU/g), time: 33 hours, temperature: 50oC, and pH: 5.2. The hydrolysis results of Ch. linum were: 50.3 g......
Preliminary study of some development stages of the reproductive organs of Aegiceras corniculatum (L.) Blanco naturally growing in the coastal areas of north Vietnam
Academia Journal of Biology - Tập 27 Số 3 - Trang 33-38 - 2014
Aegiceras corniculatum (L.) Blanco (Myrsinaceae) is a mangrove species living in tropical and sub-tropical estuarine coastal areas, bearing many features of adaption to the environmental conditions, especially the reproductive organs. This paper presents the time of formation and development of buds, seeds and propagules. It takes about 10 months in total for seeds to form the propagules, to devel......
Study bioaccumulation of heavy metals Lead (Pb) and Cadmium (cd) in two bivalvia species (Anadara subcrenata Lischke and Meretrix meretrix Linnaeus) from estuarine in Da Nang city
Academia Journal of Biology - Tập 31 Số 3 - 2014
Bioindicators are species used to monitor the health of an environment or ecosystem. They are any biological species or group of species whose function, population, or status can be used to determine ecosystem or environmental integrity. Bioindicators can tell us about the cumulative effects of different pollutants in the ecosystem and about how long a problem may have been present, which physical......
#Bioaccumulation #Bivalvia #Anadara subcrenata #Meretrix meretrix #heavy metal
Taxonomical study of the euphorbiaceae family at the Yok Don national park, Dak Lak province
Academia Journal of Biology - Tập 29 Số 3 - 2014
During the time to study on Euphorbiaceae at the Yokdon national park, Daclac province, 27 species belonging to 16 genera, 14 tribes and 4 subfamilies have been analyzed and identified. Among them, 24 species had been fully indentified while the remainders were still unidentified and maybe new for the Vietnam flora. Phyllanthoideae is the most rich subfamily with 6 tribes, 8 genera and 15 species.......
Evaluation of salt tolerance (NaCl) and compatibility of bael [Aegle marmelos (L.) Corr.] as rootstock of citrus trees
Academia Journal of Biology - Tập 32 Số 1 - 2012
Bael [Aegle marmelos (L). Corr], family Rutaceae, was grown much more in Soc Trang and Tra Vinh provinces where Khmer peoples have been living. Bael had capacity to adapt a wide range of habitat from arid to mesophytic conditions. Bael could be grown in many types of soils. It was hypothesized that Bael was able to tolerate salinity (NaCl) or not. Up to now, any articles in relation with this prob......
Borthwickia W. W. Smith (Capparaceae Juss.) a new genus for the flora of Vietnam
Academia Journal of Biology - Tập 30 Số 4 - Trang 57-59 - 2014
The genus Borthwickia (Capparaceae) was described and published by W. W. Smith in 1911, with Borthwickia trifoliata W. W. Smith as the unique species. The distribution of this genus has been known in Burma and China (Yunnan). During the study of Capparaceae specimens and documents, we have found that Borthwickia distributed also in Vietnam, with specimens of the species B. trifolia W. W. Smith col......
Species composition of amphibians and reptiles in the Yen Tu mountain area, Bac Giang province
Academia Journal of Biology - Tập 28 Số 4 - 2014
The reptile and amphibian fauna of the Yentu mountain area, Bacgiang province is very rich in species composition, with 101 herptile species belonging to 5 orders, 25 families. Among them, 41 amphibian species (about 25.3% of total species of Vietnam) belonging to 8 families, 3 orders and 58 reptilian species (about 20.27% of total species of Vietnam) belonging to 17 families, 2 orders, were recor......
The first representatives of velvety and sclerotioid polypores with rhizomorphs of a newly-recorded genera in national park of Cat Tien, south Vietnam: Lignosus sacer (Fr.) Ryv. & Laccocephalum hartmannii (Cooke) Nunez & Ryv.
Academia Journal of Biology - Tập 30 Số 3 - Trang 95-99 - 2014
1. The first representative of sclerotioid polypores with rhizomorphs of a newly-recorded genus in Vietnam - Type species Lignosus sacer (Fr.) Ryv. was recorded to enlarge it’ distribution from tropical Africa (Sierra Leone to Kenya) to South Africa to South East Asia. Morphological characters of Lignosus sacer (Fr.) Ryv. are quite similar to L. rhinocerus (Cooke) Ryv., which is commonly found in......
Species diversity assessment for rodents (Rodentia) in Hoang Lien national park, Sapa, Lao Cai, Vietnam
Academia Journal of Biology - Tập 38 Số 4 - 2016
22 rodent species were collected in 5,644 traplights in 22 transects in Hoang Lien National Park during two years (2014-2015). Some were common to include Niviventer confucianus, N. fulvescens, N. bukit and Tamiops sp., but many species such as Ratufa bicolor, Petaurista sp., Callosciurus sp., Dremomys sp. Hytrix sp., Typhlomys chapensis were rare to be collected. There varied the number of specie......
#habitats #Hoang Lien national park #relative abundance #rodents #species conservation
Chemical composition of the essential oil of Calocedrus macrolepis Kurz from Ha Giang province
Academia Journal of Biology - Tập 33 Số 2 - 2012
The stem oil of Calocedrus macrolepis Kurz collected from Ha Giang province, Vietnam, in May 2008 was isolated by steam distillation to give oil yield 0.15% and analyzed by Capillary GC and GC/MS. Thirty eight components have been identified accounting more than 78.7% of the oil respectively. The major constituents of this oil appeared to be benzoic acid (23.3%) and dodecan-7 ol (14.6%). Less pred......
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