A role of wild bird population in the transmission of parasitic flatworms (platyhelminthes: cestoidea and trematodea) in Vietnam’s forestSpecies similarity of wild avian populations containing parasitic flatworms Analysis of the distribution of bird populations containing flatworms according to three national parks showed that they decreased in the following order: Xuan Son > Tam Dao > Cat Ba. They were found 46.97% > 28.79% > 24.24% of a total of sixty-six bird specimens, respe...
9 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 60 | Lượt tải: 0
The conservation status of bats (Mammalia: Chiroptera) in Cat Ba national park, northern Viet NamOf the species listed in the Table 1, the taxonomic status of five species (Aselliscus dongbacanus, Hipposideros gentilis, Hipposideros grandis, Miniopterus magnater, Murina harrisoni) is updated following recent assessments. In previous plublications, these species were respectively listed as Aselliscus stoliczkanus, Hipposideros pomona, Hippo...
7 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 54 | Lượt tải: 0
Growth inhibitory activities of the rhizome crude extract of curcuma longa on the human pathogenic fungus mucor circinelloidesThe PIDGs evaluation represents the percentage of growth of inhibition of M. circinelloides upon exposure with the C. longa extract compared to the negative control; and the RIZDs evaluation represents the relative inhibitory ability of the extract on M. circinelloides compared to amphotericin B 400 μg/mL (100%). In a solid medium, M. circinell...
10 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 61 | Lượt tải: 0
Synthesis of some propargylamines via A³ coupling reactionResults and discussion In order to find a condition that is appropriate to our case, the A3 model reaction was carried out with 30 mol% of each catalyst in different solvents or solvent free at 110C or at boiling point of the solvent, Scheme 1, Table 1, [15]. Anhydrous FeCl3 (entry 2) seemed to be more effective than the hydrate form of FeCl3 ...
6 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 125 | Lượt tải: 0
Hyers-Ulam stability for nonlocal differential equationsDefinition 3.2. Equation (1.1) is called Hyers-Ulam stable, with respect to s defined on J, if there exists a real number C > 0 such that for each ǫ > 0 and for every mild solution v of (3.1), there is a mild solution u of (1.1) with kv(t) − u(t)k ≤ Cǫs(t, ν), ∀t ∈ [0, T ], for some ν ∈ R. Definition 3.3. Equation (1.1) is called generalized H...
7 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 43 | Lượt tải: 0
Generation of rnai plasmid corresponding to the m1l1 gene (ID 140500) belonging to myosin class i in the fungus mucor circinelloidesConfirmation of RNAi plasmids using restriction enzymes Plasmids pAT151 and pAT152 (Figure 3) were isolated to check their structure. Both of those plasmids were checked by digestion using two different restriction enzymes, XhoI and PstI (Figure 4). As expectation, recombinant plasmids generate 2 bands (9,5kb and 1,2kb) when digested by XhoI; ...
6 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 45 | Lượt tải: 0
Effect of plant extracts from eupatorium fortunei turcz on the growth of phytoplankton communities in natural water samples collected from Hoan Kiem and Lang lakesOver the last two decades, as an alternative to synthetic algicidal agents, natural compounds have been tested for controlling harmful algae in aquatic systems [20]. The test of plant extracts to control bloom of toxic microalgae in natural water samples was also researched by many authors [8, 9, 12, 13]. In 2007, Jancular et al. [8] tested the ...
10 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 63 | Lượt tải: 0
Synthesis and structures of yttrium(III) complexes containing 2-Naphthoyltrifluoroacetone, benzoyltrifluoroacetone and n,n-dimethyl-n’-(9-methylanthracenyl)ethylenediamine ligandThe structure of the C3, C4 complexs reveal a coordination number of eight for central metal ion, in which Y(III) are bonded to six oxygen atoms from three TFPB ligands and two nitrogen atoms from the AnMe2 ligand. The bond lengths of Y1-O are 2.27−2.35 Å. The bond lengths of Y(III) with two nitrogen atoms of AnMe2 N are 2.55 Å and 2.61 Å. The O...
8 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 43 | Lượt tải: 0
Hướng dẫn học sinh vận dụng phương pháp nghiên cứu khoa học thực hiện đề tài “Nghiên cứu phân bố sinh học của thuốc transferrin mang gadolini bằng phương pháp khối phổ plasma cao tần cảm ứng (icp-Ms)”Kết luận Thông qua việc tổ chức hướng dẫn HS tham gia NCKH về kết quả khoa học, đề tài nghiên cứu đã thành công trong việc tổng hợp mô hình thuốc Lz-Tf nhằm chữa nhiễm khuẩn trong não cùng với việc xây dựng được bản đồ phân bố của nó sau khi tiêm vào chuột. Các kết quả nghiên cứu chỉ ra rằng, thuốc Gd2Lz-Tf có độ bền cao trong cả quá trình bảo ...
11 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 74 | Lượt tải: 0
Chemical constituents of ethyl acetate extract from taxus wallichiana zucc (taxaceae) leaves collected in Ha Giang provinceCompound 2 was obtained from ethyl acetate extract of Taxus wallichiana leaves. Its molecular formula was identified as C29H50O based on its pseudo molecular ion peak [M-H2O+H]+ from ESI-MS, together with 1H- and 13C NMR data. The 1H NMR spectrum of 2 shows the presence of two methyl singlets at H 0.68, and 1.01 ppm; three methyl doublets that...
6 trang | Chia sẻ: hachi492 | Ngày: 25/02/2022 | Lượt xem: 40 | Lượt tải: 0
