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博茨瓦纳的社交媒体和中小企业促进战略

博茨瓦纳的社交媒体和中小企业促进战略

作者： JOE,LEO ebenezer 华中师范大学

学位级别：硕士

Science and technology change the way traditional marketing use to be *** shift in paradigm and strategies is a result of technological *** the most important transformation is the booming of using social media for *** media is currently used as marketing tools among large companies as well as small and medium *** integration of traditional marketing system into integrated marketing communication provides a new approach in market especially as a result of social media adoption in business among many *** media is still a hot topic among many researches due to its wide covering of being used in various disciplines such as economics,trade,media relations and *** researches concentrated on researching on the benefits of social media in the marketing discipline but neglecting the important part of how those benefit can be *** past researches show recognition of social media benefits such as widening new market,increasing customer interaction as well as impacting consumer purchase behavior and increasing desire and ***,strategies on how to achieve these have not been *** study aims at unveiling the promotion strategies of Botswana SMEs based on social *** study focuses on analysis effective strategies to be used in social media for promotional *** also deals on identifying challenges facing adoption of the strategies and its *** past researches based on dealing with individual or large business,neglecting the perspective of small and medium sized enterprises（SMEs）.This research deals with identifying strategies of promotions in social media by considering SMEs approach rather than individual or customer-oriented *** to lack of insufficient literature with deep explanation and empirical data on appropriate strategies needed for SME promotion in Botswana,this study is empirically done to close the *** considering the environments

关键词：中小企业社交媒体购买行为晋级策略

Insights into Pneumococcal Pathogenesis and Antibiotic Resistance

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Advances in Microbiology 2014年第10期4卷 627-643页

作者： Eric S. Donkor ebenezer V. Badoe Department of Child Health College of Health Sciences University of Ghana Medical School Accra Ghana Department of Microbiology College of Health Sciences University of Ghana Medical School Accra Ghana

Since its discovery in 1891, the pneumococcus has been one of the most extensively studied microbes, and was involved in several historical findings such as the discovery of genetic material that was later shown to be DNA. The pneumococcus is part of the normal bacterial flora of the nasopharynx, but can on occasions progress to sterile sites of the body and cause invasive diseases. There are about one million new invasive pneumococcal infections every year, majority of which occur in the developing world where children <5 years are most affected. The burden of pneumococcal disease is further heightened by the increasing prevalence of multidrug resistance of the organism. The pneumococcus remains a pathogen of immense public health significance and understanding its biology, particularly the pathogenesis and antibiotic resistance is crucial to controlling pneumococcal disease.

关键词： Pneumococcus Antibiotic Resistance Virulence Penicillin Genome

Relationship between Physico-Chemical Parameters and the Population Distribution of Fresh Water Snails in Amassoma Community and Niger Delta University Campuses,Bayelsa State,Nigeria

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Research in Ecology 2022年第1期4卷 1-6页

作者： Amawulu ebenezer Akpoebiere O.Mercy Ekwuribe Department of Biological Sciences Niger Delta UniversityWilberforce IslandBayelsa StateNigeria

Evaluating the presence of fresh water snails in a location is germane in establishing a snail-borne disease control *** purpose of the study was to see how physicochemical parameters influenced the population distribution of four fresh water snails(Lymnaea natalensis,Bulinus globosus,Biomphalaria pfeiffer,and Melanoides spp.)in the Amassoma community and Niger Delta University between March,2021 and May *** were gathered by plucking and scooping them by *** was identified using standard pictorial *** of the water of the snail habitat were measured using standard in-situ apparatus across eight sites Physico chemical measured were temperature,pH,conductivity,BOD,turbidity,salinity,and alkalinity.A total of 258 snails were gathered from the eight(8)different *** all sites,Lymnaea natalensis was more *** globosus,Biomphalaria pfeiffer,and Melanoides *** among the other snails *** had negative correlation with pH,conductivity,BOD,and alkalinity and a positive correlation with salinity and *** had a positive relationship with pH,salinity,and conductivity and a negative correlation with temperature,turbidity,BOD,and *** had a positive correlation with temperature,pH,salinity,turbidity,and alkalinity Melanoides had positive correlations with Temperature,pH,salinity,BOD,and alkalinity and a negative correlation with turbidity and *** was correlation between snails and *** presence of these snails suggests that the Amassoma village and Niger Delta University campuses are potential hotspots for a variety of snail-borne diseases.

关键词： Physico-chemical parameters Population distribution Fresh-water snail Amassoma community Niger Delta University

Comparative Evaluation of Thermogravimetric and Refractive Index Techniques in Determining Biodiesel Yield

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Journal of Sustainable Bioenergy Systems 2020年第1期10卷 30-42页

作者： Sirui Li ebenezer Miezah Kwofie Michael Ngadi Department of Bioresource Engineering McGill University Ste-Anne-de-Bellevue QC Canada

Biodiesel is a clean and renewable resource that consists of mono-alkyl esters of long chain fatty acid, which could be obtained from the transesterification reaction of vegetable oils and animal fats with alcohols and catalysts. Biodiesel yield has typically been determined using expensive and laborious techniques. The attempt of this study was to examine the potential of quantifying the biodiesel conversion in real time using refractive index in transesterification process of canola oil with methanol and KOH. Biodiesel yields at five different mixing intensities and reaction times were measured using a refractometer. The measured results were then compared with analytical data obtained from thermogravimetric analysis (TGA) technique over a temperature range of 25℃ - 600℃. Experimental results indicated that the FAME conversions at different mixing intensity and reaction time measured from refractometer correlated well to the relative weight losses from TGA method with R2 = 0.93 (p ≤ 0.05);however, the refractometer may over-estimate the biodiesel yield when the reaction rate was too low. Overall, the refractometer technique is cheaper and easier to manage and could provide a reliable prediction of biodiesel yield in real time.

关键词： FAME Thermogravimetric Analysis Refractive Index Mixing Real-Time Monitor

基于生物炭基的臭氧催化氧化与超滤联用处理染料的研究

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基于生物炭基的臭氧催化氧化与超滤联用处理染料的研究

作者： Sackey ebenezer Ampofo 浙江科技学院

学位级别：硕士

Textile industries result in the production of a large amount of wastewater with a robust and persistent *** the textile industries,Azo dyes are primarily used,which have become harmful to the *** Red 46（BR 46）dye is an industrial dye used as a model compound for Azo dyes,which have been identified as one of the most problematic dyes in industrial *** is a clear sign that Azo dye removal from wastewater,such as BR 46,is a pressing issue that must be *** methods,such as coagulation,membrane separation,adsorption and advanced oxidation,etc.,have been reported and used to treat dye wastewater,and the prospect of different procedures has been ***,it is essential to seek a suitable process to control dye wastewater *** this study,ozonation,biochar,and ultrafiltration（UF）membrane were used to treatment BR *** removal rates of BR 46 by ozone,biochar,UF membrane,or their combined processes were investigated,and membrane flux variation was *** study was conducted to investigate biochar samples derived from bamboo and rice straw for adsorbing Basic Red 46（BR 46）from aqueous solutions using batch ***（B）and rice straw（R）were pyrolyzed at 500 and 700℃（B500,B700,R500,and R700）.Experimental data of BR 46 adsorption on B500,B700,R500,and R700 well-fitted pseudo-second-order kinetic model（R2＞0.99）.After 24 hours,the dye and biochars had almost reached adsorption equilibrium,with R500 and R700 having higher adsorption efficiency than B500 and *** solution’s p H largely influenced the surface charge of biochars,which resulted in the variation of adsorption capacities of BR *** the increase of p H values,the adsorption capacities increase with a maximum occurring at a p H of *** adsorption isotherms indicated that the adsorption of BR 46 on B500,B700,R500,and R700 better fitted the Langmuir model than the Freundlich ***,adsorption capacity increased with an incr

关键词： Biochar Ozonation UF membrane Catalyst Dye

Cyanide Contents of Leaves of Commonly Consumed Cassava Varieties from Three Geographical Regions of Ghana

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Journal of Food Science and Engineering 2013年第12期3卷 648-656页

作者： William Opoku-Nkoom ebenezer Asibey-Berko Anna Lartey Department of Nutrition and Food Science University of Ghana Legon Accra 233 Ghana

Consuming a cyanogenic plant is an etiological factor to the persistence of iodine deficiency in the post salt iodization phase. Ghana, notably the Northern belt, still reports of iodine deficiency after 14 years of mandatory consumption of iodized salt by an Act of Parliament. The study aimed at determining the cyanide contents of leaves of commonly consumed cassava varieties in Ghana and investigating the effects of some environmental factors on cyanide content. Three communities each from Southern, Middle and Northern Ghana served as the study sites from where young, non-diseased and fully-spread cassava leaves were sampled from plants of commonly consumed cassava varieties. Cyanide was analyzed by the standard color^metric method based on the chloramine-T/pyridine-barbituric acid protocol （4500-CN E）. Cassava leaves from Northern Ghana had significantly higher mean cyanide content （177.22 ± 20.82 ppm） than those from Middle （130.83± 33.00 ppm） and Southern Ghana （127.24 ± 37.54 ppm）（P 〈 0.001）. Two-factor ANOVA showed significantly higher adverse environmental effects on cyanide contents of leaves of unimproved cassava varieties than improved ones （R2 = 0.627, P = 0.023）. From multiple regression analysis, temperature was the most significant environmental factor explaining 33% of the variability in cyanide content （R2 = 0.331, P = 0.002）, followed by altitude （R2 = 0.106, P = 0.049） and rainfall （R2 = 0.084, P = 0.062）. The high cyanide contents of cassava leaves from Northern Ghana, due principally to the high atmospheric temperature, may be a contributory factor to the high prevalence of goiter and the persistence of iodine deficiency in that geographic region.

关键词： Cassava leaves cyanide content iodine deficiency Ghana.

Impact of mergers on the corporate performance of acquirer and target companies in India

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Journal of Modern Accounting and Auditing 2009年第11期5卷 55-64页

作者： Murugesan Selvam Manivannan Babu Gunasekaran ＆dhumathi Bennet ebenezer Department of Commerce and Financial Studies Bharathidasan University Tamil Nadu 620024 India

Mergers and acquisitions become the major force in the changing environment. The policy of liberalization, decontrol and globalization of the economy has exposed the corporate sector to domestic and global competition. It is true that there is little scope for companies to learn from their past experience. Therefore, to determine the success of a merger, it is to be ascertained if there is financial gain from mergers. It is very important to study the liquidity performance of those companies to test whether those companies have sufficient liquid assets to meet its current obligations. The present study is limited to a sample of companies which underwent merger in the same industry during the period of 2002-2005 listed in one of the Indian stock exchange namely Bombay Stock Exchange. It is proposed to compare the liquidity performance of the thirteen sample acquirer and target companies before and after the period of mergers by using ratio analysis and t-test during the study period of three years. The study found that the shareholders of the acquirer companies increased their liquidity performance after the merger event.

关键词： merger acquirer target financial performance

Determination of Potential Landfill Site in Tarkwa Area Using Multi-Criteria GIS, Geophysical and Geotechnical Evaluation

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Journal of Geoscience and Environment Protection 2018年第10期6卷 1-27页

作者： Asare Asante-Annor Samuel Asare Konadu ebenezer Ansah Geological Engineering Department University of Mines and Technology Tarkwa Ghana

A 24-acre land at Aboso serves as the site where municipal solid waste from Tarkwa and its environs are openly dumped. Evaluation of the suitability of this existing landfill site for the construction of an engineered landfill was determined. Reconnaissance survey, structural mapping, determination of depth to groundwater, geotechnical site investigation as well as socio-economic indicators showed that the existing landfill site is not suitable for an engineered landfill construction. A multi-criteria GIS model was used to select an alternative suitable area for the construction of an engineered landfill. The multicriteria GIS modelling identified fourteen (14) suitable areas for the siting of landfill in the Tarkwa area. A site located in Domeabra was chosen due to its proximity to the neighbouring communities of Tarkwa, Nsuta and Aboso. The suitability of the proposed site in Domeabra was assessed using geotechnical and geophysical methods. The geotechnical methods included the testing of soil properties such as moisture content, particle size distribution, Atterberg limit, bulk density, specific gravity, and compactibility. The soils at Domeabra site are predominantly gravel and sand, well graded with gradual increase in clay content with depth and good moisture content (less than 30%). The gravel and sandy soils have good to excellent shear strength and work ability. The soils in Domeabra have suitable dry density (1.3 - 2.1 Mg/m3), bulk density (1.7 - 2.5 Mg/m3) and specific gravity (2.2 - 2.9) for landfill construction. The geophysical method involved the use of seismic refraction tomography. The geophysical survey showed that the site is made up of four layers namely the top soil (0.5 - 2 m), weathered material (5 - 15 m), saturated material (10 - 15 m) and fresh rock. The water table occurs at a depth of 12 to 15 m. The proposed area in Domeabra based on the geophysical and geotechnical investigations is suitable for the construction of engineered landfill.

关键词： Landfill Site Multi-Criteria GIS Seismic Refraction Tomography Geotechnical Site Investigation Tarkwa Area

基于区块链的分布式物联网设备身份认证机制研究

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物联网学报 2020年第2期4卷 70-77页

作者：谭琛陈美娟 Amuah ebenezer Ackah 南京邮电大学通信与信息工程学院江苏南京210003

为了解决物联网集中式平台在设备身份认证过程中兼容性低、抗攻击能力弱等问题,提出了一种基于区块链的分布式物联网设备身份认证架构。将数字身份等信息存入新型区块数据结构中,并根据密码学相关知识提出了分布式物联网设备身份认证机... 详细信息

为了解决物联网集中式平台在设备身份认证过程中兼容性低、抗攻击能力弱等问题,提出了一种基于区块链的分布式物联网设备身份认证架构。将数字身份等信息存入新型区块数据结构中,并根据密码学相关知识提出了分布式物联网设备身份认证机制,设计了设备数字证书颁发和身份认证的详细流程。从各实体间的权力约束、设备隐私性保护、抵御攻击能力等方面对所提机制进行了安全性分析,并对比分析了安全属性、计算开销和存储开销3个方面的性能。结果表明,所提出的身份认证机制可以抵御多种恶意攻击,能够实现高度安全的分布式物联网身份认证,并且在性能方面具有一定优势。

关键词：区块链物联网分布式身份认证密码学