Evaluation of plant growth regulators on root formation of semihardwood and hardwood cuttings of Sarcandra glabra (Thunb.) Nakai

The aim of this study is to evaluate the effects of three types of plant growth regulators (α- naphthyl acetic acid, indole-3-acetic acid and β-indol butyric acid) on the root formation of the semihardwood and hardwood cuttings of Sarcandra glabra (Thunb.) Nakai. The effects of plant growth regulators on root formation were evaluated based on living percentage, rooting percentage, secondary rooting percentage, and the number and the length of roots. The results showed that the best root growth regulator was β-IBA. The overall effective concentrations of growth regulators were 1.0 and 1.5%. The living percentage of the semihardwood cuttings was lower than that of the hardwood cuttings. However, the root growth parameters of the semihardwood cuttings were better than those of the hardwood cuttings.

Updated molecular phylogenetic data for Opisthorchis spp. (Trematoda: Opisthorchioidea) from ducks in Vietnam

Background: An opisthorchiid liver fluke was recently reported from ducks (Anas platyrhynchos) in Binh Dinh Province of Central Vietnam, and referred to as "Opisthorchis viverrini-like". This species uses common cyprinoid fishes as second intermediate hosts as does Opisthorchis viverrini, with which it is sympatric in this province. In this study, we refer to the liver fluke from ducks as "Opisthorchis sp. BD2013", and provide new sequence data from the mitochondrial (mt) genome and the nuclear ribosomal transcription unit. A phylogenetic analysis was conducted to clarify the basal taxonomic position of this species from ducks within the genus Opisthorchis (Digenea: Opisthorchiidae). Methods: Adults and eggs of liver flukes were collected from ducks, metacercariae from fishes (Puntius brevis, Rasbora aurotaenia, Esomus metallicus) and cercariae from snails (Bithynia funiculata) in different localities in Binh Dinh Province. From four developmental life stage samples (adults, eggs, metacercariae and cercariae), the complete cytochrome b (cob), nicotinamide dehydrogenase subunit 1 (nad1) and cytochrome c oxidase subunit 1 (cox1) genes, and near-complete 18S and partial 28S ribosomal DNA (rDNA) sequences were obtained by PCR-coupled sequencing. The alignments of nucleotide sequences of concatenated cob + nad1 + cox1, and of concatenated 18S + 28S were separately subjected to phylogenetic analyses. Homologous sequences from other trematode species were included in each alignment. Results: Phylogenetic trees were inferred from concatenated (cob + nad1 + cox1) nucleotide sequences and combined 18S + 28S nucleotide sequences of five Opisthorchis sp. BD2013 samples and additional reference taxa. Both trees demonstrated the anticipated clustering of taxa within the superfamily Opisthorchioidea, the paraphyly of the genus Opisthorchis and the sister-species relationship of Opisthorchis sp. BD2013 with O. viverrini. Conclusions: While it is likely that Opisthorchis sp. BD2013 is distinct from O. viverrini, it is clearly a sister taxon of O. viverrini within the limited number of Opisthorchis species for which appropriate sequence data are available. The new sequences provided here will assist the diagnosis and the taxonomic clarification of the opisthorchiid species

Industrial Clustering Policy and Economic Restructuring in Vietnam

This paper reviews the industrial agglomeration and evaluates the industrial clustering policy in Vietnam. Base on the Kuchiki flowchart on the building of industrial clustering policy for developing countries, the authors suggest a policy framework for Vietnam

Industrial Clustering Policy and Economic Restructuring in Vietnam

This paper reviews the industrial agglomeration and evaluates the industrial clustering policy in Vietnam. Base on the Kuchiki flowchart on the building of industrial clustering policy for developing countries, the authors suggest a policy framework for Vietnam

The Current Status of Secondary School Teacher’s Perception of Happiness in Nam Dinh Province during the Implementation Period of the 2018 General Education Program

In the current context of a major revolution in the Vietnamese education system, teachers’ perception of happiness makes an important criterion in evaluating effectiveness of the changes made to educational programs. The initial investigation of the positive effects of this renovation was conducted on the scale of Nam Dinh province and the results show multidimensional sources of information. In addition to positive information, there is still information that raises many questions for leaders to pay attention to. The outcome of the investigation suggests the evaluation of “The job is meaningful” is 3.10 out of 5 points, which is the lowest in assessment criteria. Meanwhile, the rates for “Completely disbelieve” and “Slightly disbelieve” in happiness of their profession in the future take up a large proportion (24.4%). However, other criteria namely “Being satisfied with current position” and “Feeling motivated with the job” received higher evaluation scores, respectively 4.05/5 points and 4.11/5 points. Via the results of the research, the author is looking forward to appropriate actions taken by the Ministry of Education and Training of Vietnam with a view to enhancing the perception of happiness among teachers

ASSESSMENT OF THE POTENTIAL FOR DEVELOPMENT OF AGRITOURISM IN BINH DINH PROVINCE, VIETNAM

This study evaluates the potential for agritourism development in Binh Dinh Province, Central Vietnam. The analytical hierarchical process is used to determine the weights of four factors with 25 measurement criteria to assess agritourism potential. The research results show that Binh Dinh Province has great agritourism potential based on four evaluation factors, including (1) local agricultural tourism resources, (2) the trend for agritourism development and the agritourism market, (3) the local community’s willingness, and (4) the supporting activities of the local government. In particular, the local agricultural tourism resources factor received the highest score, followed by the local community’s willingness and the supporting activities of the local government. The trend for agritourism development and the agritourism market was rated the lowest. Therefore, Binh Dinh has viable opportunities to encourage the growth of agritourism to improve farmers’ livelihoodsDu lịch nông nghiệp đem lại nhiều cơ hội cho phát triển kinh tế cũng như đa dạng hóa các loại hình du lịch và cải thiện đời sống sinh kế của người dân. Nghiên cứu sử dụng phương pháp phân tích thứ bậc (AHP) để tính các trọng số của các tiêu chí đánh giá tiềm năng phát triển du lịch nông nghiệp tại các huyện, thị xã phía bắc tỉnh Bình Định. Tiếp theo, kết quả mô hình hóa sơ đồ mạng cho thấy cả 4 địa phương An Lão, Hoài Ân, Phù Mỹ, thị xã Hoài Nhơn đều được đánh giá ở mức điểm cao về tiềm năng phát triển du lịch nông nghiệp trên các khía cạnh tài nguyên du lịch, xu hướng phát triển du lịch, sự ủng hộ của người dân địa phương và sự quan tâm của chính quyền địa phương. Tuy nhiên, yếu tố xu hướng phát triển thị trường du lịch nông nghiệp được đánh giá ở mức điểm thấp hơn. Điều này cũng xuất phát từ việc phát triển du lịch nông nghiệp tại các huyện, thị xã phía Bắc tỉnh Bình Định cũng mới bắt đầu nhận được sự quan tâm trong vài năm gần đây, số lượt khách tham quan các huyện, thị xã phía Bắc tỉnh Bình Định còn ít so với tiềm năng du lịch của địa bàn

An optimized HRM method for diagnosis of G6PD deficiency in kinh Vietnamese via viangchan mutation

With Glucose-6-phosphate dehydrogenase (G6PD) deficiency being the most common enzyme disorder in human, there have been 184 discovered point mutations and several methods that have been applied for diagnosing this disease. However, these techniques often pose several major problems such as being time-consuming, low sensitivity and high cost. Recently, the High Resolution Melting (HRM) has been studied and proven to be effective for DNA genotyping, mutation scanning and sequence matching. Therefore, HRM has been chosen for diagnosing G6PD deficiency via Viangchan mutation in this study. In this study, a total of 56 dried blood spot samples (including six control samples which were known the exact genotype by sequencing and fifty unknown samples) were collected and extracted DNA by using QIAamp DNA Blood Mini Kit. Primers for HRM analysis were designed through by the Umelt software. Then HRM optimization was carried out for annealing temperature of primers (Ta) and MgCl2 concentration on six control samples. The optimized HRM protocol with 2.5 μM of MgCl2 and Ta at 62oC was applied for fifty G6PD samples and then comparing with ARMS-PCR genotyping results for the validation process. In the final step, genotyping results were confirmed by sequencing. In a results, both sensitivity and specificity of this technique reached 100%. Based on these favorable outcomes, this study has successfully optimized the HRM conditions for diagnosing fifty G6PD samples. It was such an essential precondition that showed HRM could be applied for other types of G6PD through other types of mutations such as Canton mutation or continues to be developed for HRM-Multiplex reactions

Entanglement of a Scattered Single Photon and an Exciton

A single photon which is initially uncorrelated with an exciton will evolve to be entangled with the exciton on their continuous kinetic variables in the process of resonant scattering. We find the relations between the entanglement and their physical control parameters, which indicates that high entanglement can be reached by changing specific parameters of exciton

TỐI ƯU HÓA ĐIỀU KIỆN NUÔI CẤY VÀ KHẢO SÁT KHẢ NĂNG PHÂN HỦY DIBENZOFURAN VÀ NAPHTHALENE CỦA CHỦNG VI KHUẨN Paenibacillus naphthalenovorans 4B1

The pollution of polycyclic aromatic hydrocarbon compounds caused by herbicide residues contaminated with dioxin from the war and other wastes from industrial activities has left severe consequences to human health and the environment. Bioremediation using microorganisms capable of decomposing pollutant compounds exhibits more advantages than physicochemical treatment methods as it is highly efficient, economically feasible, sustainable, and eco-friendly. In this study, Paenibacillus naphthalenovorans strain 4B1, isolated from dioxin-contaminated soil in Vietnam, was optimized the culture conditions and evaluated its abilities to degrade dibenzofuran and naphthalene. The results revealed that strain 4B1 showed the best growth on mineral salts medium supplemented with dibenzofuran 1250 mg/L or naphthalene 750 mg/L, pH 7.0, incubated at 45°C and 180 rpm with a cell density of 9,42 × 107 và 5,6 × 107 CFU/mL, respectively. Gas chromatography analysis of the substrate concentrations indicated that strain 4B1 could degrade 79.76% of 1250 mg/L dibenzofuran and 83.03% of 750 mg/L naphthalene after 72 hours of incubation at optimal conditions. These results make Paenibacillus naphthalenovorans 4B1 a potential candidate for application in bioremediation of environments contaminated with polycyclic aromatic hydrocarbon compounds.Ô nhiễm các hợp chất hydrocarbon thơm đa vòng gây ra do dư lượng chất độc chiến tranh hoặc từ chất thải của các hoạt động công nghiệp đã để lại nhiều hậu quả nghiêm trọng cho sức khỏe con người và môi trường sinh thái. Phương pháp phục hồi sinh học sử dụng các vi sinh vật có khả năng phân hủy các hợp chất ô nhiễm cho thấy hiệu quả xử lý cao, chi phí thấp, bền vững và thân thiện với môi trường hơn so với các phương pháp lý hóa thông thường. Trong nghiên cứu này, chủng vi khuẩn Paenibacillus naphthalenovorans 4B1, phân lập từ đất nhiễm dioxin, được nghiên cứu tối ưu hóa các điều kiện nuôi cấy và đánh giá khả năng phân hủy các hợp chất dibenzofuran và naphthalene. Kết quả nghiên cứu cho thấy chủng vi khuẩn này sinh trưởng tốt nhất trên môi trường muối khoáng bổ sung 1250 mg/L dibenzofuran hoặc 750 mg/L naphthalene, pH 7,0, nuôi cấy ở nhiệt độ 45°C và tốc độ khuấy trộn 180 vòng/phút với mật độ tế bào lần lượt là 9,42 × 107 và 5,6 × 107 CFU/mL. Phân tích sắc ký khí hàm lượng cơ chất còn lại trong môi trường nuôi cấy cho thấy chủng 4B1 có khả năng phân hủy dibenzofuran và naphthalene với hiệu suất lần lượt là 79,76% và 83,03% sau 72 giờ nuôi cấy. Kết quả này là cơ sở cho việc ứng dụng chủng vi khuẩn Paenibacillus naphthalenovorans 4B1 trong nghiên cứu xử lý các môi trường bị ô nhiễm các hợp chất hydrocarbon thơm đa vòng

Microwave-Assisted Synthesis of Acetophenone (per- O

Thirteen new substituted acetophenone (2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-thiosemicarbazones (3) were synthesized by reaction of 2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl thiosemicarbazide (1) and substituted acetophenones (2). The reaction was performed using microwave-assisted method. The compounds (3) have remarkable antibacterial and antifungal activities against Escherichia coli, Staphylococcus epidermidis and Candida albicans