Labor efficiency has always been the critical point of any professions, It is particularly concerned in the construction industry where products are depended on workers’ contribution,and thus controlling labor productivity is always the target asked for managers. By work sampling method to assess labor productivity, the results showed that the average proportion of usefully working time was 81%. This study provided an overall vision for construction firms and direct labor managers about the real situation of labor resources in the construction field. From this, managers shall research to propose management methods as well as innovating methods to effectively exploit labor’s working time.

The study is aimed to fabricate the Pt/C and PtRu/C composite electrodes and to study their electrochemical properties in acidified methanol (MeOH) and ethanol (EtOH) electrolyte. The Pt and PtRu nanoparticles were synthesized from H2PtCl6 and RuCl3 solutions by co-precipitation method and were characterized by X-ray diffraction (XRD) and Field Emission Scanning Electronic Microcopy (FE-SEM). The cyclic voltammetry (CV) in the potential range of -0,3 - 1,6 V (vs Ag/AgCl) showed that the MeOH is more favorable than EtOH for the oxidation upon both Pt/C and PtRu/C. The oxidation of MeOH and EtOH is irreversible and incompleted. The results of chronoamperometry showed that the electrocatalytic activity of composite electrodes is better in MeOH than in EtOH.

This paper is aimed to propose a mix proportion design method for self-conmpacting concrete (SCC) based on the optimal ratio of aggregate to paste. The volume ratio between aggregates and paste in the mix proportion calculating by proposed method is suitable for all the requirements of SCC mix. It is easy to adjust amount of paste and aggregate to follow the requirements of SCC as well as other specific design requirements.

The study is aimed to assess the implementation of regulations on current supply status of rural domestic water, water quality and users’ opinions as baseline data to improve water supply activity in Tien Giang province. This study was carried out by collecting the secondary data of domestic water quality in rural zones of 30 water supply stations from 3 groups of enterprise, state-run and community from 2010 to 2014, as well as direct interviewing of 30 officers and 30 households of each group. The results showed that 30 water supply stations followed the guidelines of Circular 15/2006/TT-BYT issued by Ministry of Health. However, the implementation of these guidelines in the studied water supply stations was incomplete and could be listed as unsafe distance from sanitary structures, lack of backup power generators and water treatment systems construction. The results of water quality monitoring were fulfilled the Vietnamese standard of Minitrsy of Health (QCVN 02:2009/BYT) except arsenic and microorganism contents. The management and water supply activities from the state-run suppliers were better than the others. Nevertheless, the state-run suppliers have to construct water treatment systems to improve water quality in the near future.

This study detected the required parameters to segment the Landsat 8 satellite imageries at different levels for mapping Land Use/Land Cover (LULC). Firstly, Mutiresolution segmentation was used to segment the images into different levels. Two important parameters used to segment are Scale and Shape; of which different levels – 20, 30 and 40 for Scale; and 0.1, 0.2, 0.3 and 0.4 for Shape – were tested. Secondly, Nearest Neighbor classifier was applied on the segmented images to classify the whole area into 7 different types of LULC using training sites from field and available data. Finally, the classification results were validated using independent data based on the two criteria of Overall Accuracy and Kappa coefficient. The results show that the best result was found in case of using the Scale=40 and the Shape parameter=0,3 which gained the highest accuracy with Overall Accuracy was 81,9% and Kappa coefficient was 0,788.

Sixty-four outbreaks from An Giang Can Tho, Hau Giang, Vinh Long provinces were surveyed. Serum samples were collected from these outbreaks. Enzyme Linked Immuno Sorbent Assay (ELISA) was used to detect virus and viral antibodies from the samples.  The study results showed that: 30 out of 64 of outbreaks (46,9%) were antibody positive with Gumboro disease virus. Gumboro disease mostly happened in 21 – 42-day old chickens (59,0%), the incidence rate in over 42-day old chickens was low (28,0%). Free-ranging chickens had lower incidence rate of Gumboro disease (29,2%) than that of chickens in cage (60,00%) and that of half-free-ranging chickens (57,1%). The Noi chickens had better resistance to Gumboro disease than Luong Phuong and Tau Vang chickens.

This study was done to identify the prevalence, serotypes, and antibiotic susceptibility test of Actinobacillus pleuropneumoniae (APP) strains causing porcine pleuropneumonia in Ben Tre province. Isolation and identification of APP from 144 nasal swabs, 15 tonsil and 15 lung samples collected from pigs at any ages, at farms, households, and slaughterhouses by PCR method, antibiotic sensitivity testing by disk diffusion method. The rate of respiratory disease in swine in Bến Tre province was 11.52%. The rate of Actinobacillus spp. was 45.14% (65/144); APP was 24.62% (16/65). In 16 positive APP strains, there were 5 strains of serotype 4; 1 strains of serotype 6 and 10 strains of serotype 9, 11. The isolated APP strains were sensitive to amoxicillin/clavulanic acid (100%), tulathromycin (81.25%), gentamicin (68.75%); multi-resistante to at least 4 to 9 antibiotics including florfenicol, tetracycline, ampicillin, amoxicillin, bactrim, norfloxacin, neomycin, tobramycin, streptomycin.

The study was carried out to determine the incidence of canine parvovirus (CPV) infection in dogs from 2 months to 6 months with bloody diarrhea in the Veterinary Clinic of Can Tho University those had diarrhea by using the CPV – Ag Rapid test kit.  Result of diagnosis showed that 70 out of 159 dogs were positive with CPV antigen (44.03%). The proportion of infected dogs aged from 2 to less than 3 months of age (82.61%) had a higher incidence rate than those from 3 to less than 4 months of age (50%). There is no statistically significant difference in infectde rates in males and females. The incidence rate of domestic dogs and exotic dogs was 43,06% và 44,83%.respectively. The results also showed that dogs were vaccinated against CPV had infected rate much lower than that of unvaccinated dogs (2,90% vs 75,56%). The rate of recovery in dogs from CPV enteritis after fluid transfustion therapy combined with antibiotics was 84,29%.

Investigating immune response of common ducks and Muscovy ducks for H5N1 vaccine strain Re-6 by reaction hemagglutination inhibition (HI) showed that at 14 days of age before vaccination, common ducks and Muscovy ducks completely lacked protective antibodies. At 21 days after the first vaccination the common ducks and Muscovy ducks had protection rate of 68.18% (30/44) corresponding to the GMT value of 3.32 log2, and 60% (12/20) corresponding to the GMT value of 2.4 log2, respectively. At 30 days after the second vaccination the protection rate was 100% (44/44) corresponding to GMT value of 5 log2 for common ducks and was 75% (15/20) corresponding to the GMTvalue of 3.45 log2 for Muscovy ducks. At 60 days after the second vaccination, the protection rate was 93.18% (41/44) corresponding to the GMT value of 4.59 log2 for common ducks and was 70% (14/20) corresponding to the GMT value of 3.2 log2 for Muscovy ducks. The first vaccination was not enough antibodies to protect common ducks and Muscovy ducks. The immune response of the Muscovy ducks for H5N1 vaccine strain Re-6 was slower than that of the common ducks.

The aims of this study were to isolate and to select the potential thermotolerant ethanologenic yeasts for wine production from three-leaf cayratia (Cayratia trifolia L.) at high temperature. Fifty yeast isolates were obtained from 16 three-leaf cayratia samples collected from 4 provinces in Mekong Delta region, including Can Tho, Hau Giang, Vinh Long, and Tien Giang. Based on the major classification keys about morphology, physiology, and biochemistry of yeasts, these isolated yeasts characterized belong to three genera of Saccharomyces, Pichia, and Hanseniaspora. By the screening tests of thermo- and ethanol tolerance, twenty-three yeast isolates were selected for their thermotolerant ability (37-43oC) and ethanol tolerant capacity (9-12% v/v). In the experiment of wine fermentation from three-leaf cayratia at 37°C, the isolate Saccharomyces sp. HG1.3 was found to have the best fermentation ability with the ethanol concentration up to 9.9% (v/v).

The study was connducted to select the mycorrhizal fungal community enhancing the growth and development of maize (Zea mays L.) under the greenhouse condition. Seven VAM communities CĐ B4, CĐ B5, CĐ B6, CĐ B7, CĐ B8, CĐ B9, CĐ B10 from rhizosphere of maize were collected at the fields in Can Tho city. The number of spores from the VAM communities inoculated into maize were 25 spores/100 g dry soil under the greenhouse condition. Results from the field survey showed that more than 66% of roots were colonized by the VAM communities. There were three types of the root colonization including arbuscules, vecicles and fine fungal mycellium inside the root and Glomus, Acaulospora, Gigaspora and Entrophospora identified as well in the rhizosphere soil samples. The spore density of each community varied from 66 to 391 spores per 100 g dry soil. The results from the greenhouse experiment showed that maize plant grown in the treatment inoculated with CĐ B4, CĐ B7, CĐ B9 and CĐ B10 had more than 90% of root infected by VAM community and increased weight of corn from 48.89 to 57.22 g/tree in compared with the control treatment (41.40 g/tree). The research results identified the CĐ B4, CĐ B7, CĐ B9 and CĐ B10 which had the potential benefits to be applied in the maize field.

This study was conducted to investigate effects of selected soil chemical and biological characteristics affecting on the presence and the root infection of vesicular arbuscular mycorrhiza (VAM) in rhizosphere and maize (Zea maize L.) roots at Can Tho city. Twenty samples of rhizosphere soil and twenty samples of maize root were collected to analyze and evaluate the correlation of the root infection and the number of spores with the soil chemical and biological parameters. The results showed that more than 50% of roots were infected by VAM fungi, four genera of VAM spores were identified including Acaulospora, Entrophospora, Glomus, Gigaspora and three unidentified genera. The number of VAM spores was negatively correlated with the fungal density (r= -0,71*) and positively correlated with the number of spores of Glomus (r= 0,86*) and with soil pH (r= 0,77*) respectively. The percentage of root colonization was also positively correlated with bacterial density (r = 0,76*) and negatively correlated the with Pts (r= -0,71*) and Pdt (r = -0,78*) in soils. The results of this study indicated that the presence and the percent root infection of VAM fungi in maize were mainly affected by soil microbial density, soil pH and phosphorus contents in soil.

This study was conducted to assess the impact of industrial zones on the income of households whose land is acquired. Data from the study were collected from 126 households that land acquired for the construction of Hoa Phu and Binh Minh Industrial zone in Vinh Long province. Descriptive statistics, regression analysis was used in the study. Results of the study showed that significant changes in sources of livelihoods of communities after the land acquisition. Factors affecting the change in income of households whose land is acquired are age of households head, the education level of the households head, participation working in industrial zones, income from non-farm activities, rate of land acquisition, current land area. Several recommendations were proposed to stabilize the livelihood and increase incomes for residential communities whose land is acquired.

Peduncle dry rot disease was a new disease of sweet orange, causing loss of productivity. The disease samples were collected in Dong Thap province for observing symptoms, isolating pathogen and testing disease-causing ability by Koch’s postulates of 8 fungal isolates, the results showed that six out of eight isolates expressed ability to cause peduncle dry rot on sweet orange in garden condition and LVg-4 was isolate causing the highest disease incidence. The causal agent for peduncle dry rot disease was identified as Colletotrichum gloeosporioides by morphological characteristics and by sequencing the internal transcribed spacer regions of rRNA. The result obtained from this study will contribute for the next study on management of peduncle dry rot disease of sweet orange in Dong Thap province.

Extended-spectrum beta-lactamases(ESBLs)-producing Escherichia coli causes serious diseases in human and terestrial animals. A number of studies have recorded the presence of of ESBL producing E. coli, notably with high antibiotic resistance and especially sulfonamide resistance, in fish. Therefore, this study was conducted to determine the presence and distribution the sul genes (sul1, sul2, sul3) of ESBL producing E. coli in fish from different sites in the Mekong delta. A total of 60 ESBL producing E. coli isolates were used in this study. These strains were isolated from wild and cultured fish samples (Pangasianodon hypophthalmus and Oreochromis sp.) in An Giang, Vinh Long and Dong Thap provinces from 2015 to 2016. Results showed that: (i) the rate of ESBL producing E. coli resistance to sulfonamide antibiotic was at 98.3% with MIC >32µg/ml. This study recorded that ESBL producing E. coli simultaneously resistant to 8-9 types of antibiotics accounted for 66.7%; (ii) ESBL producing E. coli isolated from An Giang, Vinh Long and Dong Thap contained common sulfonamide resistance genes which included sul2 (35%), sul3 (10%), sul1 (5%) and some ESBL producing E. coli isolates contained two or three genes: sul1 and sul2 (25%), sul2 and sul3 (10%), sul1 and sul3 (2%), and sul1, sul2 and sul3 (12%). Escherichia coli sinh enzyme beta-lactamases phổ rộng (ESBL-E. coli) là loài vi khuẩn gây nhiều bệnh nguy hiểm cho người và những loài động vật trên cạn. Một số nghiên cứu đã ghi nhận ESBL-E. coli xuất hiện trên cá nuôi và cá tự nhiên, điều đáng quan tâm là tỉ lệ kháng thuốc của chúng rất cao, đặc biệt đối với nhóm sulfonamide. Vì vậy, nghiên cứu này được thực hiện nhằm xác định sự hiện diện và phân bố nhóm gen sul (sul1, sul2, sul3) của vi khuẩn ESBL-E. coli trên cá từ nhiều địa bàn khác nhau thuộc vùng Đồng bằng sông Cửu Long. Nghiên cứu sử dụng 60 chủng vi khuẩn phân lập được từ cá tự nhiên, và mẫu cá nuôi (Pangasianodon hypophthalmus và Oreochromis sp.) ở các tỉnh An Giang, Vĩnh Long và Đồng Tháp trong năm 2015 và năm 2016. Kết quả ghi nhận: (i) Tỉ lệ vi khuẩn ESBL-E.coli kháng kháng sinh nhóm sulfonamide chiếm 98,3% với giá trị MIC >32µg/ml; (ii) ESBL-E. coli phân lập từ các mẫu cá thu ở An Giang, Vĩnh Long và Đồng Tháp mang các gen kháng thuốc kháng sinh nhóm sulfonamide phổ biến là sul2 (35%), sul3 (10%), sul1 (5%) và một số chủng nhiễm kép 2, 3 gen là sul1 và sul2 (25%), sul2 và sul3 (10%), sul1 và sul3 (2%), sul1, sul2 và sul3 (12%).

The study was conducted to determine the price expected by tourists for home-made specialities in Phong Dien district, Can Tho city. Research data were collected from 353 domestic and international tourists. Using the method of determining the expected price, research results showed that the expected price of tourists for home-made specialities in Phong Dien district is relatively low compared to the actual price such as wine, cocoa and rice vermicelli, while the price expected by tourists for the rice paper is relatively suitable. At the same time, the research results indicated that international tourists are willing to pay for home-made specialities at higher prices than domestic ones. Since then, some recommendations were proposed to improve competitiveness, promote the consumption of home-made specialities in Phong Dien district, Can Tho city.

Dong Thap village’s communal houses retain the traces of worshiping beliefs of the local people in the past. The ranks of the gods were conferred and protected according to the secular style. Accordingly other gods - results from the needs of the localization of Vietnam people, the cultural exchange with the Chinese, the Campanagara, the Chenla - all gathered at the village communal houses to shetter and enjoy of ferings together with the main god - the Deity. After making a survey, this article presents basic introduction of gods being worshiped in the village communal houses, providing basis for the promotion of the local culture in planning, embellishing written evidence of the village communal houses in the morden time.

Van Giao village of Khmer community in Tinh Bien District, An Giang Province founded over 100 years, is a handicraft village of brocade products. It remains original and special characteristic of culture which attracts the large number of tourists, especially, international tourists in recent years. However, infrastructure, investment policy and human resourses are not sufficient in tourism activities. The potential value of the historial and cultural aspects of Van Giao village is neither exploited nor integrated effectively to raise the handicraft tourism. Opinions of the local stakeholders and tourists were collected through questionnaires to analyze the current situation and problems of Van Giao commune in tourism aspects leading to possible solutions for tourism development.

Assessment of the study program is considered a significant step in education quality assurance and a metric for position and prestige of a higher education institution (HEI) under international standards. There are internal or self-assessment conducted by HEIs and external assessment involving independent assessors and accreditors, both of which require opinions by external stakeholders. Since 2010, Can Tho University (CTU) has been surveying opinions from students graduating from study programs and employers of these students to ensure the objectivity of program evaluation. A similar practice for the Bachelor program in English Language (BPEL) in CTU, however, has not been found.  This report is based on the research involving 98 alumni of BPEL from cohort 36 to cohort 39 and 12 employers of BPEL graduates. The results analyzed and evaluated lay foundation for recommendations and proposals by the researchers toward the enhancement of training quality of the current and future BPEL to adequately meet the needs and demands from the labor market and to improve the prestige and employability of students completing the BPEL.

Responsibility accounting (RA)is one of the tools that is highly appreciated and indispensable by managers;however, measuring the influence of RA’s factors on firm performance is a controversal topic. The study about the influence of RA on firm performance in the Mekong Delta isaimedto propose some recommendationsfor better RA implementation to enhance firm’s performance. The data were collected from 122 firms through the questionnaires. The descriptive statistics, Cronbach Alpha testing, Exploratory Factor Analysis andMultiple Linear Regresstion were used in this study. The level of applying RA at firms in the Mekong Delta is pretty good. The results showed that the division of the organizational structure intoresponsibility centres,budgets, the existence of incentive systemcorrelated with the results of the responsibility centers and awareness of the manager have a positive effect, while administrative permissions and the distribution of costs and revenues to responsibility centers according to the center’s ability and validity have a negative effect on the firm performance. Some recommendations should be carried out to enhane the firm performance.

The research is aimed to discover and confirm the factors that affect the advertising avoidance and the relationship between advertising and brand awareness in video ads form on social network sites. The data was collected from 435 young clients aged 18 to 35 who are living and working in Ho Chi Minh City. Research models and scales are constructed from the advertising avoidance theory by Ducoffe (1995), Edwards et al. (2002), Cho and Cheon (2004) as well as reviewed basis on its relationship to brand awareness from the theory of Rafi et al. (2011), Bellman et al. (2009). The results showed that the advertising value (including entertainment value and information value) is the most adverse and strong impact to avoid. In addition, there is a positive correlation between negative experiences and advertising avoidance behavior. This research also pioneered and confirmed the negative relationship between advertising avoidance and consumer perception of the company brand name.

The study investigated factors affecting the quality of business registration services in Can Tho city. Based on a sample of 120 enterprises, the results from exploratory factor analysis and linear regression methods showed that seven factors impacting the quality of business registration services included empathy, service capabilities, reliability, responsiveness, tangibility, attitude, and transparence and accountability. This study provides policy implications, which may be a good reference for policy makers and service consultants to perform the administrative reform better as well as to enhance the quality of public administrative services in the future.

The study is aimed to identify unit cost of training in different undergraduate training programs in Can Tho University and to propose reasonable solutions in revenue-expense based on the university’s financial resources. This study revealed that the education cost varies among educational groups depending on on teaching staffs, number of students, and characteristics of specialization,… In the period of 2013-2015, the average unit cost  (in VND) was 9.03 million; of which, 61.9% was for education units and 38.1% was for supporting units. To improve financial balance with reasonable savings for further development of the university, some solutions were proposed relating to personnel-organization and financial management including those appropriate for increases in revenue and savings in expense.

The paper aims to show the state of economic structure change and assess the determinants of economic growth at Cantho city in the period of 2004-2015. Results showed that its economic growth in the peoriod was at high rate in which the industry and construction sector (sector II) was the engine of the growth. The economic structure change tended that the industry and construction sector and commercial and services (sector III) increasingly contributed to the economic growth of Cantho city while agricultural sector (sector I) was gradually decreased. Employment in agricultural sector tended to decrease. Using Cobb-Douglas model, the result showed that during the periods of 2006-2010 and 2011-2015, capital contribution in economic growth rate was 61,55% and 56,94% respectively; employment contribution was 14,74% and 17,62% respectively; and contribution of total factor productivity (TFP) was 23,71% and 25,44% respectively. In addition, results also showed that the efficiency of investment tended to decrease although the total amount of investment increased but capital stock for production was not proportionaly increased.

The study was conducted to analyze the value chain of Ha Chau Burmese grapes in Phong Dien district, Can Tho city. The research data were collected from 84 observations, including households, traders, granaries and retailers. The study applied the value chain approach of Kaplinsky & Morris (2001), the ValueLinks method of GTZ (2007), a set of tools for value chain analysis of Vo Thi Thanh Loc and Nguyen Phu Son (2013) and participation of chain actors. The results showed that the value chain of Ha Chau Burmese grapes is operated through four key market channels. Most of the output is mainly sold to fruit granaries (43.67%) and long distance traders (43.26%). In the key market channels, channel 1 and channel 2 are two channels that generated the highest value added (VA) as well as received the highest net value added (NVA). In the market channel of the retailers, the retailers are the agent which has generated the value added and received the highest net value added compared to the other agents. Based on such results, some solutions were proposed to improve the value chain of Ha Chau Burmese grapes in Phong Dien district, Can Tho city.

This study was conducted to evaluate factors influencing the effectiveness of agricultural cooperatives in An Giang province, thus suggesting measures to improve the efficiency of production and business activities of cooperatives agricultural in the coming time. Research results show that the efficiency of agricultural cooperatives' production and business activities is not high as only 55% of agricultural cooperatives are classified “strong”, and the rest (45%) is “medium / weak”. The research also pointed out that the agro-agro-cooperatives' shortage was low due to the low contribution of cooperative members on the average of 100,000 VND/ cooperative member; and the size of the land area managed by the cooperative is low (the cooperative members involved in the cooperative have little land area, the lowest is 0.2 ha). At the same time, the analysis of the regression results shows that the efficiency of production and business activities of agricultural cooperatives is influenced by the following factors: the year establishment of agricultural cooperatives, the capital source, the managerial level of management of cooperative management board, and the form service activities of agricultural cooperatives.

Many studies on tourism have shown that the competitiveness of a tourist destination is a combination of natural resources, human resources and technical resources, the policies and people of a destination shape the attraction of attracting visitors, satisfying the needs of visitors, and at the same time helping the destination to determine its position relative to the destination other competitors. In this study, the author collects information, analyzes and assessments of visitors on the factors determining the competitiveness of Bac Lieu tourism destinations including places of interest, infrastructure, information restaurants, hotels, entertainment, shopping... These factors are considered that important to satisfy the demand of visitors for a destination. Therefore, the study of the factors affecting the competitiveness is the key that determine the success of a destination.