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A 35 years old male patient presented with a chop wound in posterior neck between C2 and C3 interspace. After initial resuscitation this patient was put for surgery and general anesthesia was induced in left lateral position. Our experience suggested that a proper size ILMA (intubating laryngeal mask airway) is useful in managing difficult airway in left lateral position. Blind intubation attempt via ILMA is generally successful. We recommend routine use of ILMA as a backup plan in managing anticipated difficult intubation in nonconventional position. Contribution/ Originality
A systemic approach with appropriate alternatives is the key behind successful management of anticipated difficult airway. Often this scenario is further complicated by emergence nature of surgery and nonconventional positioning. This paper documents successful use of ILMA in these cases as a suitable alternative. Medical Sciences » International Journal of Medical and Health Sciences Research » Month: 07-2014 Issue: 7
An Assessment of the Level of Awareness of Climate Change and Variability among Rural Farmers in Taraba State, Nigeria
Research Article
Author(s):
Journal: International Journal of Sustainable Agricultural Research
Previous studies on climate change in Taraba State concentrated on the evidence of climate change in the state, awareness of climate change among students of tertiary institutions in the state and farmers perception and adaptation to climate change in northern Taraba. There is need to have a state wide research that examines climate change awareness and perception among rural farmers in Taraba State. This will greatly reduce the failures in measures to develop a state wide effective monitoring, adaptation and mitigation measures to climate change in the study state. Questionnaires were used to solicit for information from the famers in twelve LGAs of the state. The question ranges from the farmers knowledge of climate change, and how this has affected them over the years. The farmers were asked what they think about the trend of rainfall variables such as total rainfall, onset, cessation, length of rainy season and changes in temperature in the last 10 – 20 years in their area. The farmers were also asked what they think about the trend of incidence of flooding and dry spell in their areas and how this has affected them. Despite the farmers’ awareness and adaptation to climate change in the state, lack of information and capital hinders them from getting the necessary resources and technologies that facilitate adapting to climate change. Contribution/ Originality
This study provides recent information on the level of awareness of climate change and variability among rural farmers in Taraba state and current adaption measures employed by the farmers. This will help policy makers to integrate the local knowledge into scientific knowledge in fashioning out effective and sustainable policies on climate change adaptation. Agricultural Sciences » International Journal of Sustainable Agricultural Research » Month: 09-2014 Issue: 3
The Effect of Synchronous and Asynchronous Peer Feedback on Translation Students’ Vocabulary
Research Article
Author(s):
Journal: International Journal of Education and Practice
This paper examined an experimental study of (a) synchronous peer feedback in reading comprehension classes among Translation students developing their vocabulary knowledge at Islamic Azad University, Abadan Branch. Two classes were treated under the control and experimental conditions. Participants included 90 English as foreign language (EFL) students who were selected among 120 learners based on a researcher-made vocabulary achievement test. Then they were divided into two equal experimental and control groups. To the experimental group, synchronous peer feedback techniques via internet was started in which the students learnt how to submit their own vocabulary exercises and check their classmates’ feedback in asynchronous mode. For the control group, the feedback mode was offline through which they evaluating the same synchronous photocopied passages and sharing with their classmates within the class. After 10 consecutive sessions in a full semester, the students were tested on their post-test on vocabulary achievement on ten units covered throughout the treatment period. The performance of the two groups was compared through using an Independent Samples t-test statistical analysis. The control group who worked on peer feedback asynchronously outperformed the experimental group who dealt with group peer feedback synchronously (p<0.05). Contribution/ Originality
Urban water provision system in Ghana covers 70 percent of the resident population but it is estimated that only 40 per cent of residents connected to the supply system have regular supplies. The Ghana Water Company Limited (GWCL) which is responsible for production, distribution of potable water, billing and revenue collection from consumers is beset with many challenges. It faces several management challenges manifested in poor service delivery in terms of quantity and quality, poor cost recovery, weak capacity for operation and maintenance and poor financial management. This state of affairs has compelled the Government of Ghana to initiate reforms of the water sector including reengineering of the systems and possible Private Sector Participation in urban water provision. Presently, government has started physical expansion works in the water sector of many cities in Ghana. But not much has been done on the management system and its effect on water provision. The contention is that without effective management the expansion and reengineering works will not have sustainable effect on urban water provision. Given this scenario, Cape Coast, capital of Central region was chosen as case study on the management dimension of urban water provision. The institutional management assessment revealed that the GWCL as a quasi-state institution has limited autonomy for effective operation. This has culminated in poor performance and negative public image. The staff of the company admitted its poor service delivery and financial management. They are of the opinion that public-private partnership investment would improve the situation. However, consumers are unwilling to accept private investors’ participation in water provision due to the general perception that partnership will increase water tariffs. Contribution/ Originality
Development of genetically improved high yielding genotypes urges the knowledge on nature and magnitude of variability present in the available germplasm. Characterization and association among yield components and their direct and indirect effects on the seed yield of 100 sunflower germplasm introduced from U.S. National Plant Germplasm System (NPGS) were investigated using a simple lattice design during 2012/13 cropping season. The ANOVA results showed significant differences (P<0.05) in all the traits studied among the sunflower germplasm. Out of 100 genotype, 38 were found to be distinctive on the basis of studied traits, two genotypes (PI265499, PI650655) were classed individually while the remaining genotypes were distributed into five clusters. The phenotypic and genotypic variances, correlation, heritability and genetic advances were estimated for grain yield and yield related traits. The highest genotypic and phenotypic variances were observed for plant height (PH), seed yield (YLD), and days to flower (DF) while the lowest were observed for hundred seed weight (HSW), head diameter (HD) and oil content % (OC %). The highest genotypic coefficient of variance was recorded for YLD (31.03) followed by PH (26.20) and OC % (23.74). Broad sense heritability ranged from 63.71 (HSW) to 90.98 (PH). High genetic advance were observed for PH (10013.01), YLD (2227.01), DF (1853.00), and days to mature (DM) (1560.47) indicating the prevalence of additive gene action for inheritance of these traits. Spearman’s coefficient of rank correlation analysis revealed that HD (0.57121**), HSW (0.49039**), DM (0.53312**), DF (0.24103*) and PH (0.5491**) had maximum direct effect resulted positively and significantly (P<0.01) correlated with YLD. These traits can be used to improve the grain yield of sunflower. Contribution/ Originality
This study is one of very few studies which have investigated the genetic, phenotypic and environmental variances of sunflower germplasm collection from various sources of origin. The outputs of this study help breeders for easy selection and promotion of germplasms for further study and extrapolation of genes of superior characters in yield improvement. Agricultural Sciences » Current Research in Agricultural Sciences » Month: 09-2014 Issue: 3
Effect of Disc and Tilt Angles of Disc Plough on Tractor Performance under Clay Soil
Research Article
Author(s):
Journal: Current Research in Agricultural Sciences
The three- bottom, fully mounted disc plough (DP) is widely used as a primary tillage implement in the irrigated sector in Middle and Northern Sudan. In the DP, two angles (tilt and disc) affect tractor performance and ploughing quality. This research was conducted at the Demonstration Farm of the Faculty of Agriculture, University of Khartoum to study the effect of two disc angles (43o and 45o) and three tilt angles (15 o, 20o and 25o) on tractor effective field capacity, rear wheel slippage, fuel consumption, ploughing depth and width of cut. Soil of experimental area was clay loam. The experiment was arranged in a split-plot design and replicated three times. Disc angles were assigned to the main plots whereas tilt angles were distributed in the subplots. Tractor forward speed was maintained at the most commonly used ploughing speed (9 km/h). Effective field capacity was increased by 16% with the decrease of disc angle, while the width of cut, was decreased by 15%. The decrease of tilt angle improved penetration of discs into the soil, the highest ploughing depth was recorded for the tilt angle o15 with the disc angle o45, which consequently led to an increase of both rear wheel slippage and fuel consumption rate. Contribution/ Originality
This paper contributes in the existing literature by providing data and information concern with field capacities, field efficiency and fuel consumption using different disc and tilt angles on tractor performance in the clay soils of Shambat in Sudan Agricultural Sciences » Current Research in Agricultural Sciences » Month: 09-2014 Issue: 3
The Effectiveness of Repeated Shoot Tip Culture on Pathogens Load Reduction in Different Local Potato Genotypes in Malawi
Research Article
Author(s):
Journal: The International Journal of Biotechnology
Potato production in Malawi still remains low, estimated at 11t/ha as compared to the potential 40t/ha due to disease infection resulting from seed recycling. Shoot tip culture in vitro is one of the tissue culture techniques that can potentially eliminate pathogens from infected plantlets. A study was therefore carried out to evaluate the effectiveness of repeated shoot tip culture on pathogen load reduction of some selected local potato genotypes grown in Malawi. A factorial experiment was laid out in a Completely Randomized Design (CRD) in which five genotypes including Magalabada, Rosita, Simoki, Usiwawatha and Violet were evaluated. Results showed that the mother stock tubers for all genotypes were infected with multiple pathogens at different incidences and intensities. PVY had an incidence of 100% with a low intensity in all genotypes. PVX had an incidence of 100% in Rosita and Magalabada, 80% in Usiwawatha and Violet and 60% in Simoki and their intensity was very high. The incidence for PVM was 80% in Usiwawatha, 60% in Violet, 10% in Rosita and Magalabada and 3% in Simoki; and their intensity was high. The incidence for PVS was 60% for Rosita, Magalabada and Usiwawatha, 18% for Violet and 10% for simoki; with a very high intensity. PVA incidence was 100% for Usiwawatha, 60% for Violet, 18% for Rosita and Simoki, and 5% for Magalabada; with a very low intensity. PLRV incidence was 10% for all genotypes and had a very low intensity. Traces of Bacterial wilt in low intensities were detected. Potato plantlets obtained after repeated sub-culturing of over six times resulted in reduced pathogen load at (P?0.05) for the different pathogens. The chance of reducing the pathogen load in the different genotypes was relatively high at (P?0.05). Contribution/ Originality
This study contributes in the existing literature of tissue culture technique by providing a less expensive tool for the developing nations’ attainment of food security; since repeated sub-culturing can reduce and/eliminate pathogens load in potato (Solanum tuberosum L) due to the cells undifferentiation principle, for enhanced yield and quality. Biological Sciences » The International Journal of Biotechnology » Month: 07-2014 Issue: 7
A Socio-Economical Perspective for a Holistic Management of Temporary Watersheds in Central Mexico Based on a Simple Mathematical Model for Decision-Makers
Research Article
Author(s):
Journal: International Journal of Natural Sciences Research
This paper deals with the development of a new holistic math model to manage watersheds in Central Mexico. Hydrological resources in this medium-dry North-American region supply water to more than 49 million people. In addition, this region is considered as one of the most eco-diverse regions in the world. However, the high population density exerts great pressure on water resources in the area, leading to the edge of extinction to most of its biodiversity. Many mathematical models for estimating environmental flows have been developed, yet no model is truly holistic, even integrated, by not taking into account a variable of extreme importance to the ecological functioning of the watershed, its marked seasonal nature (temporality). Due to this lack of information on how to manage temporary rivers, most managers use conventional indices to estimate environmental flows or at best, use the standard Integrated River Basin Management model developed by http://wwf.panda.org/about_our_earth/about_freshwater/rivers/irbm/ [1] though it is only for rivers with permanent flow. The aim of this paper is to present a reflection on the management of temporary flows, presenting a mathematical model that helps decision makers in their operation programs. The holism of the third culture is taken as the paradigm framework to build the model. It should be noted that an important aspect of the model is its simplicity, since it is to be used by people with little knowledge in mathematics and thus easy to take, and common to all the rivers of the region data. Contribution/ Originality
•Seasonality of watersheds is an important factor as a source of biodiversity.
•Regulated rivers can be modeled as seasonal rivers.
•The proposed model presents diagnostic and control indicators easy to measure.
•This is the first model that really promotes a holistic management for seasonal basins.
A field experiment was conducted in the Sudan to study the extent of variability in grain yield and yield components of ten sorghum (Sorghum bicolor L. ( Moench) genotypesat three environments: Shendi (season, 2005/06), Shambat (season, 2005/06) and Shambat (season, 2006/07). A split- plot design with four replications was used. Two levels of water treatments were used, namely, irrigation every 10 days and every 21 days (drought stress condition). The main plots were allocated for water treatments and the sub plots for genotypes. Data on five characters, namely seed yield/plant, number of seeds/head, 1000-seed weight, seed yield (kg/ha) and harvest index, were collected. Genotypic and phenotypic correlations between different traits were determined. Grain yield exhibited strong positive phenotypic and genotypic correlations with its components. Significant positive associations were detected between performance of the evaluated genotypes under normal irrigation at Shendi and under water stress at Shamba tseasons (2005/06-2006/07) for number of seeds/head and 1000-seed weight. On the other hand, negative correlations were obtained between the performances at Shendi and Shambat (2006/07) under normal irrigation for seed yield/plant. Generally, these relations influenced the degree of associations between these traits and with the other traits in these environments. Contribution/ Originality
This study contributes in the existing literature by providing data and information concern with interrelationships among grain yield and some of its components in ten grain sorghum (Sorghum bicolor L. (Moench) genotypes under normal irrigation and water stress conditions in three different environments of Sudan Agricultural Sciences » International Journal of Sustainable Agricultural Research » Month: 09-2014 Issue: 3
Understanding Stakeholder’s Perceptions on Practice of Nature-Based Sports in A Portuguese Natural Park
Nature recreation and tourism in protected areas (PA) can play an important role in the development of local communities and in regional or national economies. This effect depends on sound management and, facing limited resources, collaboration between different interested parties. This study was developed in a Portuguese Natural Park and focuses on the Nature Based Sport activities developed within the scope of recreation and tourism. Perceptions and opinions of five stakeholders were taken into account, as baseline information on the components of the PA management. A qualitative approach based on semi structured interviews has been used. Results allowed improving the understanding on some existing problems in the studied PA as well as to define important actions and changes to be taken into account in short to medium term. Contribution/ Originality
This study contributes to the literature in that it addresses issues associated with management of nature-based sports, under the viewpoint of institutions, a less common aspect in the investigative panorama which usually focuses on visitors perceptions. This seems to be an important approach if we are trying to begin a new recreation management approach (e.g. collaborative). Business & Management » Journal of Tourism Management Research » Month: 12-2014 Issue: 2
Mechanisms of the Decline in Reproductive Fitness with Age in the Moth Spodoptera Litura
Research Article
Author(s):
Journal: International Research Journal of Insect Sciences
Although several hypotheses have been proposed, the mechanisms underlying the decline in reproduction of insects with age remain unclear. In this study, the effect of aging on the reproductive performance of both sexes was studied in Spodoptera litura. Aging in both sexes significantly reduced reproductive fitness. Female aging had a significantly stronger effect than male aging on fecundity and fertility. This study clearly demonstrates that oviposition by virgin females is an important contributor to the decline in female fecundity with delayed mating. However, the reduction in fecundity in females mated late relative to females mated early was much greater than (almost three times) the number of eggs laid by virgin females before mating. What accounts for this additional loss in fecundity? To answer this question, egg production, oosorption, mating frequency and longevity in both sexes were analysed. The results suggest that S. litura females may emerge with extra nutrient reserves that can be allocated to adult survival and egg production; delayed mating may cause females to allocate more resources towards survival, leaving less for egg production after mating relative to females mated young. This mechanism is likely the key cause of the decline in fecundity due to aging. In addition, the fertility rate was significantly influenced by female, but not male, age at mating, suggesting that senescence degraded egg quality but not sperm quality. The results of this study also showed that the mating frequency of moth pairs was negatively correlated with male age at mating, which is likely the primary mechanism underlying the negative effects of male aging on female reproductive success. Contribution/ Originality
Globally, gastric cancer has been acknowledged as a disease of public health concern because of its related morbidity, deaths and influence on multiple dimensions of the quality of life of the patient and their family members. The objective of this article is to systematically review the published literature on the potential risk factors of gastric cancer, and eventually suggest range of interventions to eventually minimize the prevalence of gastric cancer. An extensive search of all materials related to the topic was made using library sources including Pubmed, Medline, World Health Organization website and Google scholar searches for one month. Keywords used in the search include Gastric cancer, health, and Helicobacter pylori. Multiple ranges of factors have been attributed to the causation of gastric cancer in heterogeneous settings. To counter the consequences of gastric cancer, there is a crucial need to develop and implement a public health strategy to enable early detection of the cancer. In conclusion, in the global aim to reduce the burden of gastric cancer, the need of the hour is to formulate comprehensive & cost-effective strategies well supported by intensified awareness campaigns and strengthening of the health care delivery system. Contribution/ Originality
This study explores the potential risk factors of gastric cancer, and suggests multiple interventions to minimize the prevalence of gastric cancer on a global scale. Medical Sciences » Cancers Review » Month: 06-2014 Issue: 1
Olfactory Response of an Assassin Bug, Rhynocoris Longifrons (Insecta: Hemiptera: Reduviidae) To the Hexane Extracts of Different Agricultural Insect Pests
Research Article
Author(s):
Journal: International Research Journal of Insect Sciences
The predator-prey interaction of five prey species with the assassin bug, Rhynocoris longifrons (Stål) (Hemiptera: Reduviidae) was assessed in a Y-shaped olfactometer and the prey preference was assessed in six-arm olfactometer provided with the bodyextracts in hexane. Although R. longifrons responded to all the hexane extracts of testedinsect pests, R. longifrons showed maximum response to the lepidopterans Spodoptera litura (F.) (6.67±1.18 min), Helicoverpa armigera (Hübner) (5.17±0.89 min) and Achaea janata (L.) (4.42±1.04 min) followed by the coleopteran Mylabris indica (Thunberg) (3.00±0.82 min) and the least response to the hemipteran Dysdercus cingulatus (F.) (2.42±0.76 min).Thus, the present study clearly reveals the order of the host preference of R. longifrons to the tested hexane extracts of the taxonomically diverse insect pests. Contribution/ Originality
This paper contributes the first hand information on the allelochemical interaction of Rhynocoris longifrons with its prey species Spodoptera litura, Helicoverpa armigera, Achea janata, Dysdercus cingulatus and Mylabris indica and reveals its prey preference. It also enables one to employ R. longifrons as a biocontrol agent against these insect pests. Agricultural Sciences » International Research Journal of Insect Sciences » Month: 03-2014 Issue: 1
Study on Adaptability of Released Midland Maize Varieties around South Ari Woreda, South Omo Zone, Southern Nation Nationality Peoples Region, Ethiopia
Research Article
Author(s):
Journal: Current Research in Agricultural Sciences
Ten released maize varieties were tasted at two sites in randomized complete block design with three replication during 2013 cropping season. The experiment was carried out to test the adaptability of improved mid-altitude maize varieties and identify and select the best high yielding variety/ies for the target area. ANOVA revealed significant differences (p<0.05 and 0.01) between varieties for grain yield at both sites and six characters studied (biomass, plant height, ear length, tassel length and northern corn leaf blight). The significance of varieties difference indicates the presence of variability for each of the characters among the tested entries. The mean grain yield at both sites ranged from 71.7 qt/ha for BH545 to 108.71qt/ha for BH670. Shapi (84.38qt/ha) site was low yielding location than Gumter site (92.31qt/ha). Varieties BH660, BH540, BH140, Gibe -2 and BH670 had high mean grain yield and had good mean performance for yield related traits (biomass, ear length and tassel size), except BH540 that sowed high susceptible to northern corn leaf blight. Variety Gibe-2 is open pollinated; possible for farmers to recycle seed up to five year and also it had relatively high mean grain yield, moderate tolerant to northern corn leaf blight and it was the shortest one. Therefore; Gibe -2 would be highly recommended to growing farmers in the studied area and its vicinity, next the two hybrids; BH540 and BH140 would be recommended from yield point of view with great care of disease especially northern corn leaf blight. Further study should be carried out with disease management and improved varieties to improve maize production with increased yield and biomass production. Contribution/ Originality
A digital camera was used to photograph images around the Sheldonian Theatre, which is a semicircular building located in central Oxford, UK. Close-up images included a color chart for lightness and chromatic calibration across images taken between 10:00 and 13:00 in the spring in order to obtain comparative brightness levels for vertical limestone surfaces around this historical building. A digital light (Lux) meter was also employed in this study to capture variations in incoming sunlight onto building walls at ground-level. The outdoor integrated digital photography and image processing (O-IDIP) method was used, focusing on orientational effects on the lightness and coloration of surfaces. Images in Lab Color were calibrated based on a 3-point (black-white and green-red) procedure. The results convey the brightest surfaces on average to be west-facing. Conversely, the most variation in the means was evident on the east-facing side of the building and lowest on the west wall. These variances convey the effects of piecemeal maintenance of the building, so that on the same wall the lowest and greatest values of calibrated % Mean L appear. Soiling patterns are affected by microclimatic effects, with wind-driven rain in Oxford coming predominantly from the southwest, affecting buildings differently at the regional to local scale. This means that south- and west-facing walls may be relatively more rainwashed than north- and east-facing walls, which could complicate the results as a confounding variable acting on the degree of soiling and surface brightness. However, Lux meter readings helped to clarify this complication, showing the least illumination on west- and south-facing building walls. The study, hence, contributes to disentangling between and elucidating outdoor lighting conditions and soiling patterns imposed by microclimatic effects on vertical (limestone) surfaces, such as this historical building exterior, where the brightest illuminated surfaces are not west-and south-facing, but rather east- and north-facing. It thereby quantifies the extent of brightness ranges in soiling patterns created by rainwashing (exposure versus sheltering) effects. Finally, the 3-point calibration procedure now integrates chroma as well as brightness and contrast adjustments, allowing for the outdoor measurement of areal chromatic change on building exteriors. The building walls in this study are mainly Slightly Dark and only a minority are actually classifiable as Dark. Contribution/ Originality
This study contributions to the quantification of building soiling in polluted (urban) environments. Rather than using point-source measurements, the O-IDIP allows for the areal quantification of color. Its application allows for the differentiation of microclimatic effects on outdoor lighting (orientational effects) and surface brightness and coloration. Engineering » Journal of Building Construction, Planning and Materials Research » Month: 03-2014 Issue: 1
Philosophical Texts on Travels: Chronicles and Testimonies of Travellers
The present essay review explores the role played by travels to form cultures as well as the use of travel writing in the social science. Over centuries, intellectuals rested their reflections on the testimonies of travels as they have been formulated by other travelers. Whether medieval or pre-industrial travel experiences were used to delineate the epistemology of the whole social sciences in Europe, the viewpoint of tourist is neglected as naïve or subject to the lack of objectivity. Why travels now are not taken into consideration for the epistemologists?. Are modern tourists more naïve or enrooted in a great variety of prejudices? Are ancient travellers very different to tourists? Contribution/ Originality
This study contributes in the existing literature adding a new point of entry in the history of travels, which have been employed by social sciences to construct their epistemological objects. Additionally, if the ancient traveler’s chronicles were used as historical sources today, why tourist-based experience is trivialized as liable source of research is an interesting issue which deserves to be discussed. Business & Management » Journal of Tourism Management Research » Month: 12-2014 Issue: 2
Landau-Pekar Bipolaron in Singlet and Triplet States
Research Article
Author(s):
Journal: Review of Advances in Physics Theories and Applications
We give an overview of studies a bipolaron stability by variational method. For bipolaron formations, a relation is established between the variational principle and the virial theorem optimizing the electronic wave functions. We present a large number of qualitative and quantitative arguments, which indicate that the Landau-Pekar bipolaron is an axially-symmetrical formation. Much attention is paid to the analysis of the influence of the Coulomb electron-electron correlations on the stability of a large bipolaron. In detail we analyzed the criteria for determining the optimal wave functions. It is established that a step-by-step increase in the flexibility of the electronic wave function due to the electron correlations does not stabilize a one-center bipolaron. We show after into account of electron-electron correlations a singlet bipolaron retains spatial axially-symmetrical. At the same time, the electron-excited triplet states of Landau-Pekar bipolaron have spherical symmetry. The results of Kasirina and Lakhno are based on the one-center bipolaron model are incorrect. Presented evidence that the correct application of the variational method and correct account of electron-electron correlations only increase the binding energy of the bipolaron but symmetry of Hartree-Fock approximation can not change. We adduce proofs which point to methodological errors of one-center bipolaron model as well as arising from their calculations incorrect physical consequences. As illustrated in this review the axially symmetric Landau-Pekar bipolaron can correctly interpret the experimentally detected spectroscopic data. Contribution/ Originality
We have established mathematically that the spatial symmetry of the singlet bipolaron Landau-Pekar is axial-symmetric. At the same time, triplet states of the bipolaron are spherically symmetric formations. Increasing the flexibility of the wave function does not change the spatial symmetry of the bipolaron. Knowledge of the bipolaron symmetry allows to correctly interpret experiment. Engineering » Review of Advances in Physics Theories and Applications » Month: 06-2014 Issue: 1
Transesterification of Caso With Low Amount of Free Fatty Acids and Its Optimization
Research Article
Author(s):
Journal: Review of Energy Technologies and Policy Research
This study revealed the application of ANN as a tool for optimization of transesterification of Chrysophyllum albidium seed oil (CASO) to Chrysophyllum albidium oil biodiesel (CAOB). 30 experimental runs were generated and used to determine the effects of four reaction variables namely reaction temperature, reaction time, catalyst amount and methanol/oil molar ratio on CAOB yield. It was noted that the highest observed yield obtained in this study was 89.30% (w/w) at the following variable conditions; reaction temperature 60 oC, catalyst amount of 0.7 (wt. %), reaction time of 50 (min) and methanol/oil molar ratio of 5. The coefficient of determination R2 and the adj. R2 were found to be 0.99919 and 0.998439, respectively. The root mean square error (RMSE) of 0.14261 was obtained. Meanwhile, the qualities and fuel properties of CAOB produced were found to be within the ASTM D6751 and DIN EN 14214 biodiesel standards. The fatty acid profile of the CAOB revealed that CAOB is highly unsaturated (78.505%). Hence, the study established that CASO is a good alternative seed oils for fuel production which are renewable, cheap and environmental friendly. Contribution/ Originality
This study is one of very few studies which have investigated the use of CASO to produced biofuel. Energy & Environmental Sciences » Review of Energy Technologies and Policy Research » Month: 06-2014 Issue: 1
Energy Trading and Congestion Management Using Real and Reactive Power Rescheduling and Load Curtailment
Research Article
Author(s):
Journal: Review of Energy Technologies and Policy Research
Congestion is termed as the operating condition in which there is not enough transmission capacity to implement all the desired transactions. This paper deals with the power trading in electricity market to ensure regular supply at competitive rates with multi congestion case. Bidding process of 75 Indian bus systems is analyzed. It is shown that how can congestion cost can be addressed through active & reactive power rescheduling and load curtailment with transmission line constraints. With rescheduling of generation the congestion is removed with some congestion cost. Contribution/ Originality
The paper’s primary contribution is to find MCP and LMP for Pool based transaction. The Congestion so addressed by the real and reactive power rescheduling bids of generators. The revised rates for MCP and LMP are calculated. It is obtained that the congestion is relieved in problem under study. Energy & Environmental Sciences » Review of Energy Technologies and Policy Research » Month: 12-2014 Issue: 2
Religiosity, Paranormal Beliefs, and Psychopathological Symptoms in Two Ethnic Samples
This study was carried out to determine the influence of religiosity and paranormal beliefs on the development of psychopathological symptoms among groups of people from two different ethnic origin. A survey research was adopted using a purposive sampling method to draw the sample from Igbo and Yoruba ethnic groups. The sample consisted of two hundred and four respondents with the age range of 14 and 65 years. 101 were females and 103 were males; 6 traditional, 66 Islamic and 132 Christian religious adherents. 98 Igbo and 106 Yoruba all with minimum educational qualification of Junior Secondary School Certificate responded to Religious Affiliation Scale (Omoluabi, 1995), Revised Paranormal Belief Scale (Tobacyk, 1988) and General Health Questionnaire (Goldberg, 1978). Analysis of Variance, Independent t-test, and Multiple Regression were used to analyse the data and results indicated that paranormal beliefs significantly influenced only anxiety dimension of psychopathology but do not influence other dimension. No significant effect of religiosity was discovered on any dimension of psychopathology. There was a significant difference between Igbo and Yoruba on Paranormal Beliefs, depression and anxiety dimensions of psychopathology but no significant difference was discovered on religiosity. It was concluded that paranormal beliefs partially influence psychopathology but religious beliefs do not have any influence on psychopathology in this study. Contribution/ Originality
It originates new formula which stipulates that therapeutic attempt on health should consider the beliefs and norms of the people since these variables are interwoven. Social Sciences » Humanities and Social Sciences Letters » Month: 12-2014 Issue: 4
Abstract