1431. Effects of Substrate Variation on Methane and Carbon-Dioxide Production in a Biogas Plant | ||
Abdul Malek, Dr. Md. Akramul Alam and Shahab Uddin | ||
Abstract | Pdf | Category : Engineering | Sub Category : Civil Engineering |
Effects of Substrate Variation on Methane and Carbon-Dioxide Production in a Biogas Plant
The study has attempted to observe three models of biogas system using twenty liter plastic containers as digesters with Cow Dung (CD) and Poultry Droppings (PYD) organic wastes. The cow dung and poultry dropping were mixed separately with water in a ratio of 1:1 (v/v) and the slurry was properly stirred. Thereafter Treatments A, B, C, D and E were prepared using previously made slurry with the following specific proportions as (100% CD + 0% PYD), (75% CD + 25% PYD), (50% CD + 50% PYD), (25% CD + 75% PYD) and (0% CD + 100% CD). Three replicates were carried out for each sample. The plant consists of the fermentation chamber, the inlet and outlet pipe, the gas pipe and the stirrer. The samples were tested for methane and carbon dioxide productions along with pH and Temperature for 31days. Treatment D which is a mixture of (25% cow dung and 75% poultry droppings) produced more methane than the rest of the treatments. 96.08%. The cumulative methane yields of treatments D, A, C, E and B were 96.08%, 83.16%, 72.3%, 46.9% and 36.04% respectively. The order of both methane and carbon dioxide productions production was 25% CD + 75% PYD > 100% CD + 0% PYD > 50% CD + 50% PYD > 0% CD + 100% PYD > 75% CD + 25% PYD.The study revealed further that the mixture of Cow Dung and Poultry Droppings as waste was great potentials for generation of biogas and its use should be encourage due to its early retention time and high volume of biogas yields than other organic waste. Also in this study, it was found that temperature variation, pH and some of the factors that affected the volume yield of biogas production.The main objectives of this study were to evaluate the variation of methane and carbon-dioxide production from Cow Dung and Poultry Droppings both individually and combined as substrates and also to find out the suitable substrates composition for biogas production.
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1432. Empirical Investigation of Macro Economic Factors with GDP “A case of Pakistan” | ||
Muhammad Asif | ||
Abstract | Pdf | Category : Management | Sub Category : Finance |
Empirical Investigation of Macro Economic Factors with GDP “A case of Pakistan”
Gross demotic product known as GDP are affected by multi factors. Some factors affect it positive and some hold a negative relation with GDP. Each variable has its own importance and our study will discuss the effect of inflation and interest rate on GDP. Some theorists have found that these variables are inversely proportional to growth of an economy while other researchers have found a direct association among them. In Pakistan these studies are very critical, because economic growth in Pakistan has not been up to the mark for last few years. A continuous increase in the Interest rates and inflation has been observed. Godwin (2007) defines real gross domestic product (GDP) increases when economic growth increases. Gyimah-Brempong (1989) found that the military expenses adversely affect the growth of economy. Sub-Saharan African countries using a simultaneous-equations model for the military expenditure effect the economic growth. Khilji and Mahmood (1997) proposed that the GDP growth has negative relation with defence expenses.
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1433. Entrepreneurship and Business Ethics | ||
Ali Reza Rostami, Moosa mohamadi, Mostafa Emami and Mansoor Khaksar | ||
Abstract | Pdf | Category : Business and Law | Sub Category : International Business |
Entrepreneurship and Business Ethics
Interest in entrepreneurship has heightened in recent years, especially in business schools. Much of this interest is driven by student demand for courses in entrepreneurship, either because of genuine interest in the subject, or because students see entrepreneurship education as a useful hedge given uncertain corporate careers This paper reports a study of the importance of religious faith to entrepreneurs and the relationship of that faith to their ethical judgments. The importance of religious faith to entrepreneurs was similar to the importance of religious faith to other business respondents. Literature offers numerous definitions of ethics.Crane and Matten (2004, p.8) define business ethics as ‘‘the study of business situations, activities, and ecisions where issues of right and wrong are dressed’’. Based on Jones‘s definition of ethical decisions (Jones, 1991, cited in Chau and Siu, 2000) ,Entrepreneurs who identified religious interests as being of high importance, and also entrepreneurs who were highly orthodox in their faith, expressed more sensitive ethical judgments on at least five of sixteen ethical issues than did entrepreneurs who indicated that religious interests were of low or no importance.
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1434. Essay of poultry manures hygienisation and amendment value improving in South Benin | ||
Mêdessou Armande Boko, Honoré Sourou Bankolé, Claude Ahouangninou, Placide Cledjo and Dominique Coco Kodjo Sohounhloue | ||
Abstract | Pdf | Category : Life Sciences | Sub Category : Bio Technology |
Essay of poultry manures hygienisation and amendment value improving in South Benin
Poultry manures are widely used in market gardening in South Benin. Several studies have shown that the use of raw poultry manures in market gardening has an impact on both the microbiological and chemical quality of the vegetables produced. Therefore, the hygienisation of these manures, through various composting processes, is necessary. The main objective of this research is to study the efficiency of aerobic composting and the anaerobic digestion of poultry manures in terms of reduction of pathogenic microbial load. To do this, poultry manure collected on a target farm in southern Benin was treated according to the two composting processes. Samples of the raw manure and humus obtained after composting were collected and analyzed in the laboratory for the count of the pathogenic flora. The quantum of Escherichia coli decreased by more than 90 % at the end of both processes, but aerobic composting was more effective than anaerobic digestion. On the other hand, there was a proliferation of coagulase-positive Staphylococcus and Clostridium perfringens whose quanta increased considerably at the end of the two processes, which can be justified by several factors whose redox potential of these two particular bacteria, conditions of the composting process and the hygiene of post-composting operations.
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1435. Evaluation of appropriate rangeland indicators in rangeland health of Fars province, Iran | ||
A.Khoshkhahad, S. H. Habibian and H. Gharedaghi | ||
Abstract | Pdf | Category : Agricultural Sciences | Sub Category : Agriculture |
Evaluation of appropriate rangeland indicators in rangeland health of Fars province, Iran
Rangeland ecosystems are dynamic and will change in the occurrence turbulences and will degrade if cross the threshold of rangeland health. We can judge on the effects of management activities by determination of rangeland health features. In this study using 17 ecological indicators, including rill, water flow pattern, Pedestal, bare ground, gully, wind-scoured, litter movement, soil surface resistance to erosion, soil surface loss or degradation, plant community composition and distribution relative to infiltration and runoff and, compaction layer, structural and functional groups, plant mortality, litter amount, annual production, invasive plants and reproductive capability of perennial plants for determination of three characteristics of rangeland ecosystems (soil and habitat stability, hydrological functions and health of living organisms). The main objective of this study is applying this concept in the area of Cheshme Anjir. Indicators were studied in three ecosystems characteristic expressed in five evaluation class and deviation degree of rangeland health features with reference area. The results showed that the key habitat in term of sustainability of soil and habitat in slight to moderate, hydrologic function slight to moderate, organisms’ health slight to moderate while critical habitat in term of soil sustainability and habitat in relatively extreme, hydrologic function in extreme and organism health located in extreme class.
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1436. Evaluation of Baobab Multi-nutrient Block Concentrate as a Dietary Supplement for Enhancing Milk Production and Quality in Red Sokoto Goats | ||
Okunlola D. O, Ojo T.Y and Fasola A.A | ||
Abstract | Pdf | Category : Life Sciences | Sub Category : Bio Technology |
Evaluation of Baobab Multi-nutrient Block Concentrate as a Dietary Supplement for Enhancing Milk Production and Quality in Red Sokoto Goats
Baobab Multi-nutrient Block Concentrate (BMBC) as dietary supplement for enhancing milk production and quality in Red Sokoto goats (RSG) was evaluated. The formulation consists of Baobab pulp and seed 25%, wheat offal 25% palm kernel cake (PKC) 20%, Urea 5 %; salt 5%; molasses 10% and cement 10%, respectively, Sixteen (16) lactating RSG previously crossed with South Africa Boer bucks were randomly selected, balanced for weight and grouped into 2 comprising of Eight (8) animals each. Group A were allowed access to BMBC (- BMBC), while Group B were allowed access to BMBC (+BMBC). Panicum maximum was fed on zero grazing at 4% of individual animals’ body weight. Daily milk yield and samples were taken to analyze for Total solids, Crude protein, Fat and Ash and selected minerals (Ca, K, Mg, Na and P). The results were significantly affected (P<0.05). Milk yield for RSG +BMBC ranged from 398.75 – 428.50g/day with mean average of 412.69g/day ahead of RSG – BMBC with value range of 312.75 – 335g/day; with mean average of 324.12g/day. Milk composition (%) values for RSG +BMBC were 18.50, 6.05, 5.75, 0.98 and 5.72, RSG – BMBC 12.05, 3.58, 3.30, 0.82 and 4.35 for total solids, protein, fat, ash and lactose, respectively. Mineral values(mg/g) recorded for Ca, K, Mg, Na and P in RSG+BMBC were 250.00, 342.50, 88.45, 92.86 and 96.95, compared to RSG – BMBC with 231.00, 330.00, 75.53, 84.13 and 91.10, respectively. This results showed that BMBC enhanced the yield and composition and mineral values of lactating RSG.
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1437. Experimental investigations and finite element analysis of debonding behaviour of steel fibre reinforced epoxy | ||
Satnam Singh, Prince, Pardeep Kumar and Rohit Kumar | ||
Abstract | Pdf | Category : Engineering | Sub Category : Mechanical Engineering |
Experimental investigations and finite element analysis of debonding behaviour of steel fibre reinforced epoxy
The mechanical advantage of using composite is high strength to weight ratios which increases their capabilities for aerospace, structural and automobile applications. The epoxy-coated reinforcement (ECR) has gained mainstream acceptance to extend the useful life of highway structures. The volume fraction of reinforcement affects the overall strength a composite and the orientation of fibers in matrix plays a significant role in determining the debonding behavior. The present work focuses on the determination of compressive strength and debonding behavior of steel reinforced epoxy composite with different orientation angles of fibers. The results revealed that among different orientations of fibers, reinforcement at 0° angles shows maximum compressive strength and least debonding than 45° and 90° angle of reinforcement.
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1438. Exploration of a Digital Technology Adoption Among Indigenous People in Guyana | ||
Volda Elliott | ||
Abstract | Pdf | Category : Educational Research | Sub Category : Educational Technology |
Exploration of a Digital Technology Adoption Among Indigenous People in Guyana
Training is a vital in crystallizing acceptable technological classroom practices. The purpose of this basic qualitative study was to discover the perceptions of Indigenous Amerindian preservice teachers about the adoption of digital technology in the classroom. Rogers’s diffusion of innovation theory and David and Venkatesh technology of acceptance model served as theoretical precepts to understand indigenous Amerindian preservice teachers’ perceptions about the use of digital technology, perceived barriers, and the coping and adopting mechanism throughout their pedagogical practices. Ten indigenous Amerindian preservice teachers participated in this qualitative study. Semistructured, interviews were the primary data collection tool. Open coding was used to generate themes, and analyzed emergent coding. The findings of this indicated that the rate of adoption of digital technology could accelerate if (a) training is strategic, (b) reduction of institutional barriers, and (c) professional practices are aligned for educational growth. Indigenous Amerindian preservice teachers may be served well to acquire the skills and overcome the technological barriers to better prepare learners beyond the classroom. Even though internet access would facilitate indigenous Amerindians in Guyana to develop technology literacy skills and access educational resources, some preservice teachers have a low rate of technology adoption in the classroom. This study may contribute to knowledge to the field of digital technology and furthers understanding of pedagogical practices. The findings may contribute to positive social change in that professional development centers can improve skills that provide flexible learning for IAPT to integrate digital technology beyond the classroom. and serve as a catalyst to promote growth by capacity building.
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1439. Factors Influencing on Economic Development of Somalia | ||
Abdifatah Ahmed Ali and Aaron L. Mukhongo | ||
Abstract | Pdf | Category : Management | Sub Category : Finance |
Factors Influencing on Economic Development of Somalia
Somalia is a country that has experienced excessive amounts of political instability during the past decade. Somalia, like most other countries in Africa, was colonized by European nations during the late 1800s (Roth, Somalia a country in turmoil , 2004). According to United nation Development Program (UNDP), the prolonged fighting in Somalia led to massive loss of property, lives and destruction of the society (UNDP 2008). Political instability contributed to massive suffering and poverty in Somalia, there has been massive unemployment and migration of people from the country. The study guided by the following objectives, to find out whether quality education affects economic development of Somalia, to ascertain how the gross domestic product affects economic development of Somalia, to determine the extent to which investments affects economic development. This study was descriptive in nature and it will utilize cross-sectional data collected through a standard questionnaire. This study will be conducted in Mogadishu City, the capital of Somalia. The target populations of this study will be114348 residents of Hodan District (UNFPA, 2014). In order to provide valid estimates, 384 respondents will be selected with Simple random sampling and only those present at that time will be chosen. The findings it shows that quality education plays a significant role in the economic development of the country. The study showed that a large percentage of the respondents in Somalia agree that it through offering quality education to the people of Somalia that productivity of the country will improve and economic development. The correlation analysis between the independent variable indicated strong relationship between the independent variables. This indicates that the independent variables were significant enough to impact the dependent variable. There is a strong relation between higher GDP and good quality education indicated by 57.8 percent. The relationship between Higher GDP and Savings is the only way we can increase economic growth indicated by 51.9 was significant enough to influence the dependent variable. The government of Somalia should strive for education quality improvement through renovating the teacher education and training system, improving teachers' quality and teacher status, reform and adaptation of curriculum at all levels The study established that savings and investment is the only way a country can increase economic growth, for any country to achieve economic growth there must be significant savings first.Investment means an increase in capital spending, e.g. buying new machines, building bigger factories and education. For example, investing in skills and education can increase labor productivity. Investment in new technology and capital can increase the productive capacity of the economy.
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1440. Fish Farming Management Practices as Determinants of Fish Yield in Kakamega County, Kenya | ||
Akwanyi, O. William, Wakhungu W. Jacob and Obiri, F. John | ||
Abstract | Pdf | Category : Agricultural Sciences | Sub Category : Aquaculture |
Fish Farming Management Practices as Determinants of Fish Yield in Kakamega County, Kenya
This study established the association between fish farming management practices and fish yield in Kakamega County, Kenya. The results were that fish farmers who record the highest fish harvest of over 400 Kgs of fish output per 300 m2 fishpond are those who check water quality at their ponds and apply corrective measures; and those who get their fingerlings from accredited sources. The success of fish farming as an economic livelihood activity in Kakamega County depends on the proper application and appropriate implementation of fish farming management practices. These include management of water and management of the production units through appropriate stocking, feeding and record keeping.
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