WorldWideScience
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Factors Affecting Biodiesel Production  

Directory of Open Access Journals (Sweden)

Full Text Available Biodiesel is a renewable alternate fuel to diesel engines that could be partially orfully replace or reduce the use of petroleum diesel fuel. Biodiesel can be produced fromplant and animal fats through transesterification reaction. The transesterification reaction isaffected by molar ratio of alcohol, presence of water and Free Fatty Acid content, reactiontemperature, catalyst concentration and agitation speed. This review paper discuss aboutthe factors involved in transesterification reaction.

M.Mathiyazhagan

2011-06-01

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Factors Affecting Sugarcane Production in Pakistan  

Directory of Open Access Journals (Sweden)

Full Text Available This study was undertaken to identify the factors affecting sugarcane production in Pakistan. Data were collected from 387 sugarcane growers from Sindh, Punjab and NWFP province. Data were collected during the period 2007-08. The study reveals that the costs of inputs of sugarcane i.e. urea, DAP, FYM, land preparation, seed and its application, weeding and cost of irrigation were the important factors which influenced on the returns of sugarcane growers. The effectiveness was examined by using the Cobb-Douglas production function; MVP and allocative efficiency were calculated. The coefficient of multiple determinations R2 was 0.9249, which indicated that 92% variation in the cost of inputs was explained by all explanatory variables and the adjusted R2 was 92%. The F-value was 666.94 and was highly significant at 5% level of significance, indicating that the regression model was well fitted. The high prices of inputs, low price of output, delay in payments and lack of scientific knowledge were the major problems in sugarcane production. In order to enhance the productivity of sugarcane in the country, government should solve the identified problems to increase the income of sugarcane growers.

Adnan Nazir

2013-05-01

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Factors Affecting Milk Production in Buffaloes: A Case Study  

OpenAIRE

This study quantified the effect of major factors affecting the milk production in buffaloes. The important factors considered for the estimation of milk production included the value of dry fodder, the value of green fodder, the value of concentrate, number of lactations and the value of labour hours. A production function for milk was estimated by employing Ordinary Least Square (OLS) regression. In the estimated model among all the relevant variables, green fodder, lactation number and lab...

Maqsood Hussain, Abdul Ghafoor And Abdul Saboor

2010-01-01

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Factors affecting the estimate of primary production from space  

Science.gov (United States)

Remote sensing of primary production in the euphotic zone has been based mostly on visible-band and water-leaving radiance measured with the coastal zone color scanner. There are some robust, simple relationships for calculating integral production based on surface measurements, but they also require knowledge for photoadaptive parameters such as maximum photosynthesis which currently cannot be obtained from spave. A 17,000-station data set is used to show that space-based estimates of maximum photosynthesis could improve predictions of psi, the water column light utiliztion index, which is an important term in many primary productivity models. Temperature is also examined as a factor for predicting hydrographic structure and primary production. A simple model is used to relate temperature and maximum photosynthesis; the model incorporates (1) the positive relationship between maximum photosynthesis and temperature and (2) the strongly negative relationship between temperature and nitrate in the ocean (which directly affects maximum growth rates via nitrogen limitation). Since these two factors relate to carbon and nitrogen, 'balanced carbon/nitrogen assimilation' was calculated using the Redfield ratio, It is expected that the relationship between maximum balanced carbon assimilation versus temperature is concave-down, with the peak dependent on nitrate uptake kinetics, temperature-nitrate relationships,a nd the carbon chlorophyll ration. These predictions were compared with the sea truth data. The minimum turnover time for nitrate was also calculated using this approach. Lastly, sea surface temperature gradients were used to predict the slope of isotherms (a proxy for the slope of isopycnals in many waters). Sea truth data show that at size scales of several hundred kilometers, surface temperature gradients can provide information on the slope of isotherms in the top 200 m of the water column. This is directly relevant to the supply of nutrients into the surface mixed layer, which is useful for predicting integral biomass and primary production.

Balch, W. M.; Byrne, C. F.

1994-01-01

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Knowledge Elecitation for Factors Affecting Taskforce Productivity using a Questionnaire  

CERN Document Server

In this paper we present the process of Knowledge Elicitation through a structured questionnaire technique. This is an effort to depict a problem domain as Investigation of factors affecting taskforce productivity. The problem has to be solved using the expert system technology. This problem is the very first step how to acquire knowledge from the domain experts. Knowledge Elicitation is one of the difficult tasks in knowledge base formation which is a key component of expert system. The questionnaire was distributed among 105 different domain experts of Public and Private Organizations (i.e. Education Institutions, Industries and Research etc) in Pakistan. A total 61 responses from these experts were received. All the experts were well qualified, highly experienced and has been remained the members for selection committees a number of times for different posts. Facts acquired were analyzed from which knowledge was extracted and elicited. A standard shape was given to the questionnaire for further research as...

Sohail, Muhammad

2009-01-01

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A Content Analysis of Factors Affecting New Product Development Process  

OpenAIRE

The objective of this study is to review the international marketing literature on new product development process and compare the changes in the important factors in the process with the changes in the management approaches. For this purpose, the articles in three international marketing journals were selected and “new product development” and “new product performance” were searched for in the abstracts. After grouping the variables in the process, they were compared with the perspec...

Eda Atilgan-Inan; Aslihan Buyukkupcu; Serkan Akinci

2010-01-01

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A Content Analysis of Factors Affecting New Product Development Process  

Directory of Open Access Journals (Sweden)

Full Text Available The objective of this study is to review the international marketing literature on new product development process and compare the changes in the important factors in the process with the changes in the management approaches. For this purpose, the articles in three international marketing journals were selected and “new product development” and “new product performance” were searched for in the abstracts. After grouping the variables in the process, they were compared with the perspectives of management in the related periods. The results indicated that organizational factors have always been important for new product development process, which is in line with the nature of the innovation process. But the emphasis on internal factors has increased in the 21st century which is congruent with the change in management perspective foregrounding resource based view. The study differs from the similar literature review studies on the point that it deals with the topic from international marketing perspective. Therefore, R&D and other marketing studies are not included in the review and the study proposes the important factors from international firms’ point of view.

Eda Atilgan-Inan

2010-07-01

8

Factors Affecting the Production of Vietnamese Tones: A Study of American Learners  

Science.gov (United States)

This study investigates factors that affect the accuracy of tone production by American students of Vietnamese as a second language (L2). Nine hypotheses are examined, each of which isolates a factor expected to affect production accuracy: (a) task type, (b) the position of a tone in a clause, (c) discourse distance between a model provided by a…

Nguyen, Hanh thi; Macken, Marlys A.

2008-01-01

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An important affecting factor in biodiesel production : intensity of mixing  

Energy Technology Data Exchange (ETDEWEB)

In 2003, the Worldwide Fuel Charter recommended a blend of 5 per cent biodiesel in petroleum diesel fuel in recognition of biodiesel's significantly lower exhaust emissions. This paper examines physical factors in the mixing of neat canola oil for biodiesel production, concluding that an increased knowledge of the mixing can influence the transesterification process. Mixing is an important element in optimising reaction conditions, process design and kinetics. The effects of stirring speeds in the initial and latter stages of reaction are documented, with results suggesting that the enhancement of mixing intensity in initial stages dramatically accelerate transesterification reaction. Mixing intensity in the latter stages had no effects, indicating that high mixing intensity in initial stages and low mixing in subsequent stages accelerate alkali-catalyzed transesterification lipids. 10 refs., 3 tabs.

Yan, G.; Leung, D.Y.C. [Hong Kong Univ. (Hong Kong). Dept. of Mechanical Engineering

2004-08-01

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Factors affecting organic acid production by sourdough (San Francisco) bacteria.  

Science.gov (United States)

Previous workers from this laboratory observed considerable variation in the proportions of acetic and lactic acids produced in pure broth culture as compared to consistently high proportions of acetic acid produced in the sourdough and flour suspension systems. In the latter the proportion of acetic acid was always in the range of 20 to 35% of the total, whereas in pure broth culture frequently less than 5% acetic acid was produced. In the natural environment, the sourdough bacteria, tentatively identified as lactobacilli, coexist with a yeast, Saccharomyces exiguus, and this study was undertaken to determine whether this yeast or flour ingredients including glucose or other factors were involved in this variable production of acetic acid. The proportion of acetic acid produced in broth culture on maltose, the preferred carbohydrate source, was found to depend almost entirely on the degree of aeration. Essentially anaerobic conditions, as obtained by thorough evacuation and flushing with CO(2) or N(2), resulted in very low (5% or less) proportions of acetic acid. Aerobic conditions, achieved by continuous shaking in cotton-plugged flasks, yielded high levels (23 to 39% of the total) of acetic acid. Similar effects of aeration were observed with glucose as the substrate, although growth was considerably slower, or in nonsterile flour suspension systems. It is theorized that, under aerobic conditions, the reduced pyridine nucleotides generated in the dissimilation of carbohydrate are oxidized directly by molecular oxygen, thereby becoming unavailable for the reduction of the acetyl phosphate intermediate to ethyl alcohol, the usual product of anaerobic dissimilation of glucose by heterofermentative lactic acid bacteria. Comparative studies with known strains of homo- and heterofermentative lactobacilli showed similar effects of aeration only on the heterofermentative strains, lending additional support to the tentative grouping by previous workers from this laboratory of the sourdough bacteria with the heterofermentative lactobacilli. PMID:5042265

Ng, H

1972-06-01

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ASSESMENT OF FACTORS AFFECTING THE PRODUCTIVITY OF AMBER CHARKHA AND ERGONOMIC EVALUATION OF WORKERS  

OpenAIRE

Increasing demands of the cotton fabrics, now a day has made it necessary to increase the production of cotton fabrics. To increase the production it is necessary to study the factors affecting the performance of the women workers working on Amber charkha. Most of the Amber charkha in rural areas are hand operated (i.e. they runwith the help of human energy input). There are various medical, technical and environmental factors which affect the productivity of women workers working on Amber ch...

Thakre, G. V.; Patil, S. G.; Agrawal, D. N.

2011-01-01

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Some factors affecting tannase production by Aspergillus niger Van Tieghem  

Scientific Electronic Library Online (English)

Full Text Available SciELO Brazil | Language: English Abstract in english One variable at a time procedure was used to evaluate the effect of qualitative variables on the production of tannase from Aspergillus niger Van Tieghem. These variables including: fermentation technique, agitation condition, tannins source, adding carbohydrates incorporation with tannic acid, nitr [...] ogen source type and divalent cations. Submerged fermentation under intermittent shaking gave the highest total tannase activity. Maximum extracellular tannase activity (305 units/ 50 mL) was attained in medium containing tannic acid as tannins source and sodium nitrate as nitrogen source at 30 ºC for 96 h. All added carbohydrates showed significant adverse effects on the production of tannase. All tested divalent cations significantly decreased tannase production. Moreover, split plot design was carried out to study the effect of fermentation temperature and fermentation time on tannase production. The results indicated maximum tannase production (312.7 units/50 mL) at 35 ºC for 96 h. In other words, increasing fermentation temperature from 30 ºC to 35 ºC resulted in increasing tannase production.

Hamada A., Aboubakr; Malak A., El-Sahn; Amr A., El-Banna.

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Ranking factors affecting the productivity of human resources using MADM techniques  

OpenAIRE

For improving and efficient uses of various resources such as labor, capital, materials, energy and information, productivity is the purpose of all economic and industrial organizations and service enterprises. The human factor is the main strategic resource and the realization axis of productivity for each type of organization. Therefore the factors affecting the productivity, depends on suitable conditions for labor. This study is performed to identification and prioritization the factors a...

Shekari, G. A.; Khayat Moghadam, S.; Adeleh Hakimzadeh; Salahshour, S.; Keifi, A. K.

2012-01-01

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Some factors affecting rabbit production under egyptian environment  

International Nuclear Information System (INIS)

The present work was carried out in the rabbit of the department of animal production, faculty of agriculture, Zagazig University, Zagazig, Egypt, Blood biochemical analysis and hormonal assay were conducted in tracer bio climatology Unit., Department of radiobiology, nuclear research centre, Atomic Energy Authority, Cairo, Egypt. Eighty male New Zealand white (NZW) and 80 male californian (Cal) rabbits aged 5-6 weeks were used. The animals were housed in rabbit building, naturally ventilated. Rabbits cages were provided with automatic nipple drinkers and drinking and drinking water ad libitum.Rabbits were fed ad libitum on balanced growing pelted rabbit ration. 21 tabs.,13 figs.,158 refs

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Factors affecting future crude oil production in South East Asia  

International Nuclear Information System (INIS)

In the face of booming regional demand, crude oil production in the South East Asian region will decline from a 1996 peak of 5.7 million barrels a day to 3.5 million barrels a day in 2005 unless major new exploration investments are undertaken. The current fiscal terms for such investment will not attract continued significant funds to the region given the low crude price outlook, tough competitive global environment for the upstream industry, and the emergence of more attractive fiscal terms in politically and commercially stable countries with proven prospectivity. There is evidence from the emerging trend toward fiscal terms softening and differentiation around risk in some countries, that the commercial reality is becoming accepted. It remains to be seen if the various national political, bureaucratic and industry constituencies guiding these decisions within the region can respond decisively to mitigate the growing crude import dependency. (author). 2 tabs

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Factors affecting industrial wood, material production yield in Turkey’s natural beech forests  

Directory of Open Access Journals (Sweden)

Full Text Available The objectives of the present study are to determine the most important factors affecting industrial wood material production yield in natural oriental beech forests in Turkey using a multifaceted approach and to help entrepreneurs consider these factors to develop more sensitive and realistic production plans. In Günye Forest Management in Bart?n province of the West Black Sea Region of Turkey, 41 production units were chosen as the study area. The 1277 ha study area was included in the 2007 and 2010 production management plan. The general state of the stand, natural stand structure, and production methods and tools are the factors thought most strongly affect industrial wood material production yield; 26 variables representing these factors were evaluated in the study. Through multidimensional statistical analyses, including main components, factor and regression  analysis, we found that the most important factors affecting production yield were fertility, aspect of land, skidding method, stand structure, skidding distance, growing stock, transportation and harmful abiotic factors. Production units were divided into three groups based on yield rates and the 26 variables, using discriminate analysis. From the results of the study, a sample model can be developed to help forest managers predict and plan annual industrial wood production more sensitively and realistically.

Atilla Atik

2014-07-01

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Ranking factors affecting the productivity of human resources using MADM techniques  

Directory of Open Access Journals (Sweden)

Full Text Available For improving and efficient uses of various resources such as labor, capital, materials, energy and information, productivity is the purpose of all economic and industrial organizations and service enterprises. The human factor is the main strategic resource and the realization axis of productivity for each type of organization. Therefore the factors affecting the productivity, depends on suitable conditions for labor. This study is performed to identification and prioritization the factors affecting the productivity of human resources in Khorasan Razavi Gas Company. The objective of this research is an applied and the data collection methods and conclusions are descriptive - survey. Statistical sample size by using Cochran's formula is considered equal to 120. To perform this study with the Delphi method, we identify the factors affecting the productivity of human resources in Khorasan Razavi Gas Company and by using MADM techniques, prioritization of these factors has been done. Also Team Expert Choice2000 software have used for analysis. Research results show that factors affecting the productivity of human resources in Khorasan Razavi Gas Company in order of importance are: Health aspects, leadership style, motivational factors, organizational commitment, work experience, general and applied education, demographic characteristics, physical environment within the organization, external environment and competitive spirit.

G. A. Shekari

2012-12-01

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ASSESMENT OF FACTORS AFFECTING THE PRODUCTIVITY OF AMBER CHARKHA AND ERGONOMIC EVALUATION OF WORKERS  

Directory of Open Access Journals (Sweden)

Full Text Available Increasing demands of the cotton fabrics, now a day has made it necessary to increase the production of cotton fabrics. To increase the production it is necessary to study the factors affecting the performance of the women workers working on Amber charkha. Most of the Amber charkha in rural areas are hand operated (i.e. they runwith the help of human energy input. There are various medical, technical and environmental factors which affect the productivity of women workers working on Amber charkha. This paper discusses some of those factors which are responsible for this. The various factors that are affecting the productivity are health factors,sitting posture, working environment, raw material properties, and man machine system. Each of these factors plays an important role in the overall performance of the women workers. Analysis is carried out by comparing the actual readings with the standard norms available in the literature. The detailed project work is carried out to study the different factors affecting the productivity of Amber charkha. The basic necessity of this study is to provide comfortable sitting arrangement and good working environment which would help the workers for achieving better productivity with work satisfaction.

G. V. THAKRE

2011-11-01

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Applying total interpretive structural modeling to study factors affecting construction labour productivity  

Directory of Open Access Journals (Sweden)

Full Text Available Construction sector has always been dependent on manpower. Most of the activities carried out on any construction site are labour intensive. Since productivity of any project depends directly on productivity of labour, it is a prime responsibility of the employer to enhance labour productivity. Measures to improve the same depend on analysis of positive and negative factors affecting productivity. Major attention should be given to factors that decrease the productivity of labour. Factor analysis thus is an integral part of any study aiming to improve productivity.  Interpretive structural modeling is a methodology for identifying and summarizing relationships among factors which define an issue or problem. It provides a means to arrange the factors in an order as per their complexity. This study attempts to use the latest version of interpretive structural modeling i.e. total interpretive structural modeling to analyze factors negatively affecting construction labour productivity. It establishes interpretive relationship among these factors facilitating improvement in the overall productivity of construction site.

Sayali Shrikrishna Sandbhor

2014-03-01

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Analysis of Key Factors Affecting Ethanol Production by Saccharomyces cerevisiae IFST-072011  

OpenAIRE

Ethanol production by Saccharomyces cerevisiae is affected not only by fermentation conditions (temperature, pH and sugar concentration) but also by the intrinsic factors e.g., culture medium, dissolved O2, immobilization and other micronutrients. In order to investigate the influence of key factors on ethanol production by S. cerevisiae, a laboratory strain S. cerevisiae IFST-072011 was used in this study. Several fermentation runs were carried out varying temperature, pH, sugar concen...

Monzur Morshed Ahmed; Md. Abdul Quayum; Md. Fakruddin; Naiyyum Choudhury

2012-01-01

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Factors Affecting Exocellular Polysaccharide Production by Lactobacillus delbrueckii subsp. bulgaricus Grown in a Chemically Defined Medium†  

OpenAIRE

We developed a chemically defined medium (CDM) containing lactose or glucose as the carbon source that supports growth and exopolysaccharide (EPS) production of two strains of Lactobacillus delbrueckii subsp. bulgaricus. The factors found to affect EPS production in this medium were oxygen, pH, temperature, and medium constituents, such as orotic acid and the carbon source. EPS production was greatest during the stationary phase. Composition analysis of EPS isolated at different growth phases...

Petry, Sandrine; Furlan, Sylviane; Crepeau, Marie-jeanne; Cerning, Jutta; Desmazeaud, Michel

2000-01-01

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Main factors that affect the economic efficiency of broiler breeder production  

Scientific Electronic Library Online (English)

Full Text Available This study aimed at identifying the factors that affect the economic efficiency of broiler breeder production using the analysis of stochastic profit frontier function. Data were collected in 48 broiler breeder farms contracted by a commercial company located in southwestern Paraná, Brazil. The coll [...] ected data refer to the last batch of fertile eggs that was delivered to the company, between January, 2008, and July, 2009. The following parameters were evaluated: production of hatching eggs per hen (number of eggs/hen), hatchability (hatch %), feed intake per hatching egg (g feed/ egg), production scale (number of birds/batch), farmer's experience in production activities, and labor type. Factors, such as area of occupied land, electricity costs, and invested capital were also evaluated. Results showed that the cost of electricity, as well as area of occupied land, production scale, and feed intake per hatching egg significantly affect the economic efficiency of the broiler breeder farms in Southwestern Paraná, Brazil.

EH, Carvalho; JB, Zilli; AS, Mendes; GM, Morello; DV, Bonamigo.

2015-03-01

23

Affecting Factors and Security System of Food Production - A Case Study of Mingshan County  

Directory of Open Access Journals (Sweden)

Full Text Available The Grey Relational Analysis of food production has been established based on the data of grain production in Mingshan County, Sichuan province, collected from 2003 to 2008. According to the Relational Grade, factors that affect the County’s input on grain production and the degree of their influence have been analyzed. The conclusion is that unit grain yield, sown area of grain, and rural labor force is important factors affecting the county’s food production. Thus many advices were proposed, like giving priority to food security, strictly implementing farmland protection system, increasing grain yield through the improvement of per capita output, and improving preferential policies relating to grain production.

Lin zheng

2012-01-01

24

Factors affecting industrial wood, material production yield in Turkey’s natural beech forests  

OpenAIRE

The objectives of the present study are to determine the most important factors affecting industrial wood material production yield in natural oriental beech forests in Turkey using a multifaceted approach and to help entrepreneurs consider these factors to develop more sensitive and realistic production plans. In Günye Forest Management in Bart?n province of the West Black Sea Region of Turkey, 41 production units were chosen as the study area. The 1277 ha study area was included in t...

Atilla Atik; Bülent Y?lmaz

2014-01-01

25

Factors that Affect Student Motivation in a Dairy Products Elective Course  

Science.gov (United States)

Student motivation is influenced by instructional approach. Motivation is a function of initiating and sustaining goal-directed behavior. The objective of this study was to identify factors (positive and negative) that affect motivation in a junior-level dairy products elective course. Student attitudes were surveyed each year half-way through the…

Ismail, Baraem; Hayes, Kirby

2005-01-01

26

Factors affecting phaeomelanin production by a melanin-producing (mel) mutant of Vibrio cholerae.  

OpenAIRE

In a previous study we isolated melanin-producing (mel) mutants of Vibrio cholerae and demonstrated that production of melanin during growth on solid media was stimulated by L-tyrosine and L-cysteine. In the studies reported here we analyzed factors that affected melanin production in liquid media and determined the abilities of radioactively labeled amino acids to serve as precursors for the formation of melanin by V. cholerae. Radioactivity from L-cysteine and from L-tyrosine was preferenti...

Ivins, B. E.; Holmes, R. K.

1981-01-01

27

Factors affecting Small-Scale Coffee Production in Githunguri District, Kenya  

Directory of Open Access Journals (Sweden)

Full Text Available This study was carried out to determine the factors affecting small scale coffee production in Kenya. The establishments under study were small-scale coffee farms in Githunguri District.It was to determine whether marketing factors, finances, government policies and physical and human resources affect coffee production in Githunguri District. Primary sources included use of questionnaires, observation and interviews. Secondary sources included desk research, library research on journals, text books and factory publications. The target population was over 700,000 small-scale coffee producers in Kenya out of which the accessible population of 10,000 producers drawn from Githunguri District in Kiambu County was selected which a sample size of 120 respondents was sampled. Stratified sampling technique was employed to compare views among coffee producers from the various coffee societies in the area. Data analysis was both qualitative and quantitative using descriptive statistics. Data presentation was in form of tables to help interpret findings and generate conclusions that aided solutions to identified problems. The research established that marketing factors, finances, government policies and physical and human resources greatly affected coffee production. The study recommended that the government should encourage coffee production by formulating favorable marketing factors and other policies and provide finances to small scale coffee producers. Producers on the other hand should strive to provide conducive working environment to their workers so as to sustain them in their farms. This will help to improve coffee yields and quality.

Margaret Njeri Gathura

2013-09-01

28

Factors affecting the water holding capacity of red meat products: a review of recent research advances.  

Science.gov (United States)

The water holding capacity of meat products is a very important quality attribute which has an influence on product yield, which in turn has economic implications, but is also important in terms of eating quality. A number of pre-and post-mortem factors influence the water holding capacity (WHC) of meat. During the growth and development of meat animals, genotype and animal diet are important due to their direct influence on muscle characteristics. In the immediate pre-slaughter period, stresses on the animal such as fasting, and different stunning methods are likely to influence meat WHC. In the post-slaughter period chilling, ageing, injecting non-meat ingredients, as well as tumbling have important influences on WHC. Furthermore, cooking and cooling procedures for the final meat products can also affect the WHC of the product, in particular the cooking and the cooling methods, the heating and the cooling rate, the cooking temperature, and the endpoint temperature. This paper provides an overview of recent research on important intrinsic and extrinsic factors that affect the WHC of beef, pork, and lamb products, and reveals explanations and solutions to some of the critical problems related to WHC and product quality. PMID:18274969

Cheng, Qiaofen; Sun, Da-Wen

2008-02-01

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Factors Affecting Pheromone Production by the Pepper Weevil, Anthonomus eugenii Cano (Coleoptera: Curculionidae and Collection Efficiency  

Directory of Open Access Journals (Sweden)

Full Text Available Several factors affecting pheromone production by male pepper weevils, Anthonomus eugenii Cano (Coleoptera: Curculionidae as well as collection efficiency were investigated. Factors studied included: porous polymer adsorbents (Tenax versus Super Q, male age, time of day, male density, and male diet. Super Q was found to be a superior adsorbent for the male-produced alcohols and geranic acid as well as the plant-produced E-?-ocimene. Pheromone production increased with male age up to about age 15 days old and then tapered off. Male pepper weevils produced the highest amount of pheromone between noon and 2 pm (i.e., 4 to 6 h after “lights on” and were producing ca. 800 ng/h during this period. Thereafter, pheromone production decreased and was extremely low during the scotophase (i.e., ca. 12 ng/h. Male pepper weevil density had a significant effect on both release rate and pheromone composition. Pheromone production on a per male basis was highest for individual males and the percentage of geranic acid in the blend was lowest for individual males. Male pepper weevils produced only extremely low amounts of pheromone when feeding on artificial diet; however, they produced very high amounts when on fresh peppers. Together, this information will be useful in designing better attractant lures for pepper weevils.

Fred J. Eller

2014-11-01

30

Factors affecting remote handling productivity during installation of the ITER-like wall at JET  

International Nuclear Information System (INIS)

Highlights: ? The paper describes the challenges to achieve the installation of the ILW beryllium sliced wall. ? Examines the factual difference between estimated remote handling in-vessel durations and those achieved, with a view to quantifying the typical disparity between the two. ? The paper will elaborate and highlight the contributing factors. This offers an opportunity to provide provenance for availability estimates of devices such as ITER and DEMO. ? The paper will identify and describe the factors influencing the ratio between estimated versus the actual durations for remote handling operations. -- Abstract: Remote handling operations at JET have encountered many challenges to achieve the installation of the ILW beryllium sliced wall during the Enhanced Performance stage 2 (EP2) shutdown of JET. This was a demanding and challenging activity which was based on the experience gained from a period of over 15 years (20,000 h operations) of JET In-Vessel remote handling operations. This paper describes the difference between estimated remote handling in-vessel durations and those actually achieved with a view to quantifying the typical disparity between them. There are many factors that affect productivity of the remote handling operations and it is important to accommodate these either in the design of the component or within the production of the operational procedures with a view to minimise all impact on the final task duration. Some factors that affect the efficiency are outside the control of the design and operational procedures. These are unforeseen anomalies that were encountered during the removal, naked wall survey and installation of the components. Recoveries from these anomalies are extremely challenging and need to be addressed efficiently in order to minimise the impact on the shutdown duration and prevent optimised panned activities from becoming inefficient by fragmentation

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Factors Affecting sex pheromone production in female cotton leaf worm moth, Spodoptera littoralis (boisd.)  

International Nuclear Information System (INIS)

Factors influencing sex pheromone production in the cotton leaf worm female moth with emphasis on gamma radiation were investigated. To determine the effect of age on sex pheromone production, ether extracts of the female abdominal tips were prepared from virgin females of various ages in a concentration of 0.01 FE/mu L. Each female extract was tested against 1-2 days-old males. The obtained results indicated that virgin females could secrete sex pheromone early at the beginning of their life. The pheromone production increased rapidly to reach its maximum on the second day. To study the effect of daytime on sex pheromone production, the ether extracts of 1-2 days old virgin female abdominal tips were prepared at 3 hour-intervals, throughout the photo phase and scotophase in a concentration of 0.01 FE/mu L. The obtained results indicated that pheromone production showed a minimum concentration at mid-day during the photo phase. It then increased to a moderate concentration from 7:0 p.m. to 10:0 p.m. and reached its maximum titer at almost mid-night. The obtained data on the effect of gamma irradiation indicated that irradiation of 3 and 6-day-old female pupae with doses of 60 and 120 Gy, respectively caused a reduction of 28.1 and 27.3 % in male response, respectively, to female sex pheromone extracts. When full-grown female pupae were irradiated with 200 and 350 Gy, a reduction of 15.6 and 75% in male response, respectively, was reached. Thus, an irradiation dose of 350 Gy applied to full-grown female pupae could severely affect pheromone production of the emerging female moths

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Factors Affecting Alternate Rice-Fish Production of Mymensingh District in Bangladesh  

OpenAIRE

Cobb-Douglas production function has been used to measure the effect of various factors on alternate rice-fish production. The chosen factors were of fingerlings cost, cost of cow dung, cost of rice bran, cost of oil cake, cost of lime, cost of urea cost of human labour and cost of netting for fish production and for rice production the factors were human labour, animal labour. Cow dung, urea, TSP, MP, seed and irrigation cost. It was found that except cost of rice bran and lime for fish prod...

Rabbani M.G.; Hossain, M. I.; Islam, M. S.; Hossain, T. M. B.; Mannan, M. A.

2004-01-01

33

Factors Affecting Knowledge Production in Open and Distance Learning in Zimbabwe. Case of Zimbabwe Open University  

Directory of Open Access Journals (Sweden)

Full Text Available Zimbabwe Open University has been in existence for over a decade and is the only institution offering open and distance learning in Zimbabwe. The institution when it started had the highest enrolment which was higher than four conventional state universities combined. Currently the university is on the enrolment decline. This is contrary to the fact that distance education is spreading to almost all areas of education and training worldwide. It is also against the background that the Government is channeling many resources towards the establishment of a fully integrated distance learning system which involves the development of course materials and providing student support and instruction. This exhibits negative forces acting against knowledge production as less and fewer graduates are produced. Therefore the purpose of this paper was be to examine the key factors affecting open and distance learning in Zimbabwe. A descriptive survey design was adopted in form of a structured questionnaire which was used to collect data from 70 undergraduates, and 20 students post graduates. Also an interview guide was developed to carry out interviews to 10 staff members consisting of 2 Regional Directors, 2 Regional administrators, and 6 lecturers. Descriptive statistical analysis was a basic one which involves finding frequency of factors and converts them to percentages. This method was able to reduce lots of data into simpler summaries to present easily.

Tawanda Dzama

2012-11-01

34

Optimization of factors affecting the production of biodiesel from crude palm kernel oil and ethanol  

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Full Text Available Biodiesel, an alternative diesel fuel made from renewable sources such as vegetable oils and animal fats, has been identified by government to play a key role in the socio-economic development of Ghana. The utilization of biodiesel is expected to be about 10% of the total liquid fuel mix of the country by the year 2020. Despite this great potential and the numerous sources from which biodiesel could be developed in Ghana, studies on the sources of biodiesel and their properties as a substitute for fossil diesel have tended to be limited to Jatropha oil. This paper, however, reports the parameters that influences the production of biodiesel from palm kernel oil, one of the vegetable oils obtained from oil palm which is the highest vegetable oil source in Ghana. The parameters studied are; mass ratio of ethanol to oil, reaction temperature, catalyst concentration, and reaction time using completely randomized 24 factorial design. Results indicated that ethanol to oil mass ratio, catalyst concentration and reaction time were the most important factors affecting the ethyl ester yield. There was also an interaction effect between catalyst and time and ethanol- oil ratio and time on the yield. Accordingly, the optimal conditions for the production of ethyl esters from crude palm kernel oil were determined as; 1:5 mass ratio of ethanol to oil, 1% catalyst concentration by weight of oil, 90 minutes reaction time at a temperature of 30 oC.

David K. Kuwornoo, Julius C. Ahiekpor

2010-07-01

35

Optimization of factors affecting the production of biodiesel from crude palm kernel oil and ethanol  

Energy Technology Data Exchange (ETDEWEB)

Biodiesel, an alternative diesel fuel made from renewable sources such as vegetable oils and animal fats, has been identified by government to play a key role in the socio-economic development of Ghana. The utilization of biodiesel is expected to be about 10% of the total liquid fuel mix of the country by the year 2020. Despite this great potential and the numerous sources from which biodiesel could be developed in Ghana, studies on the sources of biodiesel and their properties as a substitute for fossil diesel have tended to be limited to Jatropha oil. This paper, however, reports the parameters that influences the production of biodiesel from palm kernel oil, one of the vegetable oils obtained from oil palm which is the highest vegetable oil source in Ghana. The parameters studied are; mass ratio of ethanol to oil, reaction temperature, catalyst concentration, and reaction time using completely randomized 24 factorial design. Results indicated that ethanol to oil mass ratio, catalyst concentration and reaction time were the most important factors affecting the ethyl ester yield. There was also an interaction effect between catalyst and time and ethanol- oil ratio and time on the yield. Accordingly, the optimal conditions for the production of ethyl esters from crude palm kernel oil were determined as; 1:5 mass ratio of ethanol to oil, 1% catalyst concentration by weight of oil, 90 minutes reaction time at a temperature of 30 deg C.

Kuwornoo, David. K. [Faculty of Chemical and Materials Engineering, Kwame Nkrumah University of Science and Technology (KNUST), Private Mail Bag, Kumasi (Ghana); Ahiekpor, Julius C. [Chemical Engineering Department, Kumasi Polytechnic, P.O. Box 854, Kumasi (Ghana)

2010-07-01

36

Advanced Glycation End-Products affect transcription factors regulating insulin gene expression  

Energy Technology Data Exchange (ETDEWEB)

Advanced Glycation End-Products (AGEs) are generated by the covalent interaction of reducing sugars with proteins, lipids or nucleic acids. AGEs are implicated in diabetic complications and pancreatic {beta}-cell dysfunction. We previously demonstrated that exposure of the pancreatic islet cell line HIT-T15 to high concentrations of AGEs leads to a significant decrease of insulin secretion and content. Insulin gene transcription is positively regulated by the beta cell specific transcription factor PDX-1 (Pancreatic and Duodenal Homeobox-1). On the contrary, the forkhead transcription factor FoxO1 inhibits PDX-1 gene transcription. Activity of FoxO1 is regulated by post-translational modifications: phosphorylation deactivates FoxO1, and acetylation prevents FoxO1 ubiquitination. In this work we investigated whether AGEs affect expression and subcellular localization of PDX-1 and FoxO1. HIT-T15 cells were cultured for 5 days in presence of AGEs. Cells were then lysed and processed for subcellular fractionation. We determined intracellular insulin content, then we assessed the expression and subcellular localization of PDX-1, FoxO1, phosphoFoxO1 and acetylFoxO1. As expected intracellular insulin content was lower in HIT-T15 cells cultured with AGEs. The results showed that AGEs decreased expression and nuclear localization of PDX-1, reduced phosphorylation of FoxO1, and increased expression and acetylation of FoxO1. These results suggest that AGEs decrease insulin content unbalancing transcription factors regulating insulin gene expression.

Puddu, A., E-mail: alep100@hotmail.com [Department of Internal Medicine and Medical Specialties, Viale Benedetto XV 6, 16132 Genova (Italy); Storace, D.; Odetti, P.; Viviani, G.L. [Department of Internal Medicine and Medical Specialties, Viale Benedetto XV 6, 16132 Genova (Italy)

2010-04-23

37

Advanced Glycation End-Products affect transcription factors regulating insulin gene expression  

International Nuclear Information System (INIS)

Advanced Glycation End-Products (AGEs) are generated by the covalent interaction of reducing sugars with proteins, lipids or nucleic acids. AGEs are implicated in diabetic complications and pancreatic ?-cell dysfunction. We previously demonstrated that exposure of the pancreatic islet cell line HIT-T15 to high concentrations of AGEs leads to a significant decrease of insulin secretion and content. Insulin gene transcription is positively regulated by the beta cell specific transcription factor PDX-1 (Pancreatic and Duodenal Homeobox-1). On the contrary, the forkhead transcription factor FoxO1 inhibits PDX-1 gene transcription. Activity of FoxO1 is regulated by post-translational modifications: phosphorylation deactivates FoxO1, and acetylation prevents FoxO1 ubiquitination. In this work we investigated whether AGEs affect expression and subcellular localization of PDX-1 and FoxO1. HIT-T15 cells were cultured for 5 days in presence of AGEs. Cells were then lysed and processed for subcellular fractionation. We determined intracellular insulin content, then we assessed the expression and subcellular localization of PDX-1, FoxO1, phosphoFoxO1 and acetylFoxO1. As expected intracellular insulin content was lower in HIT-T15 cells cultured with AGEs. The results showed that AGEs decreased expression and nuclear localization of PDX-1, reduced phosphorylation of FoxO1, and increased expression and acetylation of FoxO1. These results suggest that AGEs decrease insulin content unbalancing transcription factors regulating insulin gene expression.

38

Cassava sector development in Cameroon: Production and marketing factors affecting price  

OpenAIRE

Regular and available supply is the prerequisite of an effective and efficient commercialization process. Using multivariate regression analysis on field data, this research appraises the production and marketing factors that influence cassava market price. The production factors include cultivated area, planting material, yield, and farmers’ field schools; while farmers access to a paved road, having a telephone, the transportation costs of fresh roots, the level of root perishability, and...

Elise Stephanie Meyo Mvodo; Dapeng Liang

2012-01-01

39

Analyzing factors Affecting Consumers’ Attitude & Intention to Purchase Counterfeit products of luxury Brands In clothing Industry  

Directory of Open Access Journals (Sweden)

Full Text Available One of the world trends growing alarmingly is Producing, distributing & Consuming counterfeit goods of Credible & luxury brands & one of the industries facing this crisis increasingly is clothing industry. Based on this, the present study aims to analyze & identify factors influencing Consumers’ attitude toward counterfeit products & intention to purchase such products in clothing industry that has been done in Sari, Mazandaran. And in it, these Factors effect on attitude toward counterfeit products & then the impact of attitude toward counterfeit products on intention to buy such products have been measured. The study method is a Survey type & in order to collect study data, a questionnaire designed with a combination of different available resources in literature has been used. To achieve the study goals, 384 individuals who purchased counterfeit products intentionally were chosen from Sari. To analyze data & test hypotheses, Study model & questionnaire, Cronbach's alpha coefficient tests, Structural Equations Modeling (SEM, Confirmatory Factorial Analysis (CFA & one-way Variance analysis (ANONA have been applied & two Software Packages SPSS & LISREL were used. Through reviewing the literature available & analyzing experts’ views, generally, 11 variables have been identified: Personal gratification, Value consciousness, Price–quality inference, Social Effect, Brand prestige, Brand Loyalty, Ethical Issues, Risk averseness, Subjective norm, perceived risk, Brand consciousness, as the influencing factors on attitude toward counterfeit products. Study Findings have indicated that the factors as Personal gratification, Value consciousness, Price–quality inference, Social Effect, Ethical Issues, Subjective norm, perceived risk, Brand consciousness, have meaningful effect on attitude to counterfeit products & the impact of Brand prestige, Brand Loyalty, Risk averseness, was not meaningfull on view about counterfeit products. Besides, the findings have shown that attitude toward counterfeit products has a meaningful effect on intention to purchase such products.

Abdolhamid Ebrahimi

2012-01-01

40

Demographic and Academic Factors Affecting Research Productivity at the University of KwaZulu-Natal  

Science.gov (United States)

Research output affects both the strength and funding of universities. Accordingly university academic staff members are under pressure to be active and productive in research. Though all academics have research interest, all are not producing research output which is accredited by the Department of Education (DOE). We analyzed the demographic and…

North, D.; Zewotir, T.; Murray, M.

2011-01-01

41

Exploration of Lexical-Semantic Factors Affecting Stress Production in Derived Words  

Science.gov (United States)

Purpose: This study examined whether lexical frequency, semantic knowledge, or sentence context affect children's production of primary stress in derived words with stress-changing suffixes (e.g., "-ity"). Method: Thirty children (M[subscript age] = 9;1 [years;months]) produced a limited set of high-frequency (HF) and low-frequency (LF) derived…

Jarmulowicz, Linda; Taran, Valentina L.

2007-01-01

42

Factors Affecting Kenya Alpine Dairy Goat Milk Production in Nyeri Region  

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Full Text Available In Kenya use of exotic dairy goats in breeding programmes for smallholder production systems has become popular, but information on the milk production is scarce. A study was carried out to assess the milk yield of dairy goats reared in high potential and semi arid areas of Nyeri County. This involved 190 smallholder farmers rearing Alphine dairy goats in Nyeri County and registered with Dairy Goat association of Kenya (DGAK. Which formed 100% sampling of the population under study. The grade, feeding practices and age of the dairy goats were evaluated. The dairy goat average milk production was 1.90 litres per day, with the appendix grade in Kieni East giving the highest production of 2.69 liters per day while foundation grade in Mukurweini gave the lowest, 0.98 litres per day. The higher milk production in Kieni East, which is a semi arid area, was noted to be due to good feeding practices where 43% of the farmers used concentrates during milking and also 48% supplemented the feed with minerals. In the high potential area of Mukurweini none of the farmers used mineral supplements with only 5% using concentrates during milking. The age of the dam significantly affected the average milk production, with the onset of production being the age of 2.0 years, reaching the peak at the age of 6.5 years. Kieni East, gave the highest production of 4.2 litres at the age of 6 years. The results demonstrated that the low-input farming conditions affected the Alphine goats milk production.

Mburu Monica

2014-07-01

43

Factors affecting productivity and the role of customer relationship management: A case study of home appliance manufacturing  

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Full Text Available In today's competitive world, productivity- as a core source of production - is the most important target of the organization. Experimental studies in developed industrial countries prove that productivity improvements resulted from development of management systems play a more important role in production than physical increases in labor and capital factors. This paper, while focusing on productivity from a CRM perspective, employs a European Organizational Excellence Model framework to identify factors affecting productivity and the role of CRM systems. We perform an empirical study for a case study of home appliance manufacturing and using a questionnaire computed present status and compared with desired status of CRM components such as customer leadership, strategy, skill and motivation of labor work, effective use of information technology and process management.

Saeed Mirzamohammadi

2012-01-01

44

Bibliometric approach of factors affecting scientific productivity in environmental sciences and ecology.  

Science.gov (United States)

Different academic bibliometric studies have measured the influence of economic, political and linguistic factors in the academic output of countries. Separate analysis in different fields can reveal specific incentive factors. Our study proves that the Environmental Performance Index, computed by Yale University, is highly significant (p<0.01) for the productivity of research and development activities in environmental sciences and ecology. The control variables like education financing, publishing of ISI Thomson domestic journals and the English language are also significant. The methodology uses Ordinary Least Squares multiple regressions with convincing results (R(2)=0.752). The relative positions of the 92 countries in the sample are also discussed. We draw up a ranking of the countries' concern for the environment, considering evenly the scientific productivity and the environment quality. We notice huge differences concerning the number of inhabitants and population income between the countries that dominate the classification and those occupying the last positions. PMID:23425795

Dragos, Cristian Mihai; Dragos, Simona Laura

2013-04-01

45

Factors affecting plasmid production in Escherichia coli from a resource allocation standpoint  

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Full Text Available Abstract Background Plasmids are being reconsidered as viable vector alternatives to viruses for gene therapies and vaccines because they are safer, non-toxic, and simpler to produce. Accordingly, there has been renewed interest in the production of plasmid DNA itself as the therapeutic end-product of a bioprocess. Improvement to the best current yields and productivities of such emerging processes would help ensure economic feasibility on the industrial scale. Our goal, therefore, was to develop a stoichiometric model of Escherichia coli metabolism in order to (1 determine its maximum theoretical plasmid-producing capacity, and to (2 identify factors that significantly impact plasmid production. Results Such a model was developed for the production of a high copy plasmid under conditions of batch aerobic growth on glucose minimal medium. The objective of the model was to maximize plasmid production. By employing certain constraints and examining the resulting flux distributions, several factors were determined that significantly impact plasmid yield. Acetate production and constitutive expression of the plasmid's antibiotic resistance marker exert negative effects, while low pyruvate kinase (Pyk flux and the generation of NADPH by transhydrogenase activity offer positive effects. The highest theoretical yield (592 mg/g resulted under conditions of no marker or acetate production, nil Pyk flux, and the maximum allowable transhydrogenase activity. For comparison, when these four fluxes were constrained to wild-type values, yields on the order of tens of mg/g resulted, which are on par with the best experimental yields reported to date. Conclusion These results suggest that specific plasmid yields can theoretically reach 12 times their current experimental maximum (51 mg/g. Moreover, they imply that abolishing Pyk activity and/or transhydrogenase up-regulation would be useful strategies to implement when designing host strains for plasmid production; mutations that reduce acetate production would also be advantageous. The results further suggest that using some other means for plasmid selection than antibiotic resistance, or at least weakening the marker's expression, would be beneficial because it would allow more precursor metabolites, energy, and reducing power to be put toward plasmid production. Thus far, the impact of eliminating Pyk activity has been explored experimentally, with significantly higher plasmid yields resulting.

Cunningham Drew S

2009-05-01

46

Factors affecting the work productivity of Oraon agricultural laborers of Jalpaiguri district, West Bengal.  

Science.gov (United States)

In developing countries like India, where the incidence of protein-calorie malnutrition is high and mechanization is at a minimum, human labor provides much of the power for physical activity. This study presents anthropometric measurements, somatotypes, food intakes, energy expenditures, and work outputs of Oraon agricultural laborers of the Jalpaiguri district, West Bengal, in an attempt to identify the factors that predict high work productivity. Specifically, this study investigates 1) the relationship between morphological variation (anthropometric measurements and somatotype) and work productivity, 2) the nature and extent of the relationship between nutritional status and work productivity, and 3) the best predictor variables of work output. Classification of groups on the basis of median values of work output show that in the aggregate, the high productive groups are significantly younger than low-productive groups in both sexes. Before age-adjustment, the high productive groups show higher mean values of a few body dimensions, though these differ by sex, and both males and females exhibit a normal range of blood pressure and pulse rate values. Mean values of grip strength and back strength are higher in high-output men and women. Mean values of both food intake and energy expenditure are also higher among men in high-output groups, with only food intake higher in high-output women. However, after eliminating the effects of age, the differences between low-productive groups and high-productive groups in most of the variables are not significant. Productivity predictors in males consist of age, food intake and chest girth (inhalation). Females, on the other hand, show age and grip strength (left) as work output predictors. PMID:11842402

Roy, Subrata K

2002-03-01

47

PREDICTING OF THE FACTORS AFFECTING CONSUMER BEHAVIOR THE CHOICE OF ORGANIC PRODUCTS BY LOGIT REGRESSION ANALYSIS  

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Full Text Available The purpose of this study is to determine consumer behavior towards organic products in Samsun city center and to determine the factors affacting their preferences of organic products. The study was interviewed with 478 consumers living the city center of Samsun. Ad?yaman Üniversitesi Sosyal Bilimler Enstitüsü Dergisi, Y?l: 5, Say?: 10, Aral?k 2012130According of the findings, ease of accesibility of organic products, spouse’s educational level, paying extra for the organic produce, aware of food health benefits, considering the harmful effects of conventional produce, having complete knowledge of organic farming and one unit increase household number income to result increase consumption of organic produce. Consumers were not aware of the certification and control process. As a result, easy of accesibility of organic produces in the supermarkets need to be improved.

Selma KARABA?

2012-01-01

48

Factors Affecting Pasture and Meat Production Imbalance in Fars Province: A Case Study of Koohnamak Pastures in Darab  

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Full Text Available In the process of agricultural development, sustainability of pasture utilization to ensure sustained production of meat and dairy products has become increasingly important. This article aims to study factors affecting pasture and meat production imbalances in Fars province. For this purpose, the transcendental production function was used. Data was collected by using two stage cluster random sampling from 71 producers. The results revealed that present method of pasture utilization is not compatible with increasing live animal meat production objective. To optimize pasture utilization, the pasture users should be advised to stop overgrazing. In addition, the results indicated that increasing livestock and pasture mismanagement causes damage to pastures and consequently would decrease meat production in the long-run.

A. Shirvanian

2008-10-01

49

Evaluation of Factors Affecting Polyhydroxyalkanoates Production by Comamonas sp. EB172 Using Central Composite Design  

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Full Text Available Aims: Statistical approach, central composite design (CCD was used to investigate the complex interaction among temperature (25-37 °C, initial medium pH (5-9, inoculum size (4-10 % (v/v, concentration of (NH42SO4 (0-1 g/L and concentration of mixed organic acids (5-10 g/L in the production of polyhydroxyalkanoates by Comamonas sp. EB172.Methodology and Results: Mixed organic acids derived from anaerobically treated palm oil mill effluent (POME containing acetic:propionic:butyric (ratio of 3:1:1 were used as carbon source in the batch culture of Comamonas sp. EB172 to produce polyhydoxyalkanoates (PHAs. The analysis of variance (ANOVA showed that all five factors were significantly important in the batch fermentation by shake flask with a P value of less than 0.001. The optimal temperature, initial medium pH, inoculum size, concentration of (NH42SO4 and concentration of mixed organic acids were 30 °C, 7.04, 4.0 % (v/v, 0.01 g/L and 5.05 g/L respectively.Conclusion, significance and impact of study: Optimization of the production medium containing mixed organic acids has improved the PHA production for more than 2 folds. Under optimal condition in the shake flask fermentation, the predicted growth is 2.98 g/L of dry cell weight (DCW with 47.07 wt % of PHA content. The highest yield of PHA was 0.28 g of PHA per g mixed organic acids.

Noor Azman Mohd Johar

2012-09-01

50

Abiotic and biotic factors affect efficacy of chlorfenapyr for control of stored-product insect pests.  

Science.gov (United States)

Laboratory bioassays were conducted to assess pyrole chlorfenapyr as a potential grain protectant against adults of Rhyzopertha dominica, Sitophilus oryzae, Prostephanus truncatus, Tribolium confusum, and Liposcelis bostrychophila. Factors such as dose (0.01, 0.1, 0.5, 1, 5, and 10 ppm), exposure interval (7 and 14 days), temperature (20, 25, and 30°C), relative humidity (RH; 55 and 75%), and commodity (wheat, maize, barley, and paddy rice) were evaluated. Progeny production was assessed after 74 days of exposure. For L. bostrychophila and T. confusum the increase of dose increased mortality. After 7 or 14 days of exposure, mortality was low at doses of ? 1 ppm and did not exceed 23 or 36%, respectively, for L. bostrychophila or 13 or 58%, respectively, for T. confusum. After 14 days of exposure, mortality of S. oryzae at 30°C and 75% RH was 82.2%. Mortality of P. truncatus was considerably higher than that of the other species. At 0.5 ppm, mortality exceeded 81% after 7 days of exposure and 91% after 14 days of exposure. Progeny production of L. bostrychophila was extremely high. Very few progeny were found for T. confusum. For S. oryzae, offspring emergence was high, except at 20°C and 55% RH. For P. truncatus, progeny production in the treated maize was not avoided, even at 10 ppm. In the case of S. oryzae, at 0.1 ppm and after 14 days of exposure, mortality in wheat was higher than in the other three commodities. For R. dominica, mortality was low at 0.1 and 1 ppm for paddy rice but reached 74.4% in barley after 14 days of exposure. For T. confusum, mortality was low at 0.1 and 1 ppm in all commodities. For progeny production counts, for S. oryzae or R. dominica, adult emergence was higher in paddy rice than in the other three commodities. Finally, overall T. confusum progeny was low. Chlorfenapyr efficacy varied remarkably among the combinations tested, and it may be a viable grain protectant in combination with other insecticides. PMID:21819655

Kavallieratos, Nickolas G; Athanassiou, Christos G; Hatzikonstantinou, Ann N; Kavallieratou, Helen N

2011-08-01

51

Factors Affecting the Biomass and Lipid Production from Chlorella sp. TISTR 8990 under Mixotrophic Culture  

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Full Text Available Effects of media compositions on biomass and lipid accumulation of the isolate Chlorella sp. TISTR 8990 were investigated under a Plackett-Burman experimental design with mixotrophic cultivation conditions. Under this experimental design there were 15 different runs with ten factors-yeast extract, KH2PO4, MgSO4, FeSO4, MnCl2, CuSO4, Na2MoO4, H3BO3, ZnSO4 and pH. Cultures were grown mixotrophically under 16 h light and 8 h dark regime at 30 ºC for a period of 7 days. During the light regime, the light intensity at the surface of the vessels and agitation speed were set to 67.5 µmol photons m-2s-1 and 150 rpm, respectively. Initial cell concentration was set to an absorbance (A540 of 0.5. For high biomass production (2.2 g/L, run no. 6, the most effective and significant factors were yeast extract, KH2PO4, FeSO4 and ZnSO4 at concentrations 0.3 g/L, 0.3 g/L, 3 mg/L and 0.3 mg/L, respectively. Whereas for high lipid accumulation (19.59 %DCW, run no. 2, these were KH2PO4, pH and yeast extract, at a level of 1.7 g/L, 6.0 and 0.1 g/L, respectively. No significant factors were obtained for higher lipid content. The best treatment for biomass and lipid content was run no. 6, whose medium formula consisted of 0.3 g/L yeast extract, 1.7 g/L KH2PO4, 1.7 g/L MgSO4, 1 mg/L FeSO4, 0.9 mg/L MnCl2, and pH 7.0, together with fixed concentrations of glucose, NaHCO3 and KNO3 at 5 g/L, 0.05 g/L and 0.5 g/L, respectively.

Mohammad Ariful HAQUE

2012-12-01

52

Population dynamics of dechlorinators and factors affecting the level and products of PCB dechlorination in sediments  

Energy Technology Data Exchange (ETDEWEB)

Microbial dechlorination of polychlorinated biphenyls (PCBs) often stops although a significant number of removable chlorines remain. To determine the reason for the cessation, we investigated the limitation of organic carbon, PCB bioavailability, and inhibition by metabolic products. Enrichment with carbon sources did not induce additional chlorination, indicating the plateau was not due to depletion of organic carbon. The bioavailability was not limiting, since a subcritical micelle concentration of the surfactant, which enhanced desorption without inhibiting dechlorinating microorganisms, failed to lower the plateau. Neither was it due to accumulation of metabolites, since no additional dechlorination was detected when plateau sediments were incubated with fresh medium. Similarly, dechlorination was not inhibited in freshly spiked sediment slurries. Dechlorination ended up at the same level with nearly identical congener profiles, regardless of treatment. These results indicate that cessation of dechlorination was due to the accumulation of daughter congeners, which cannot be used as electron acceptors by microbes. To determine whether the decreasing availability affected the microorganisms, we determined the population dynamics of dechlorinators using the most probable number technique. The growth dynamics of the dechlorinators mirrored the time course of dechlorination. It started when the population increased by two orders of magnitude. Once dechlorination stopped the dechlorinating population also began to decrease. When dechlorinators were inoculated into PCB-free sediments, the population decreased over time. The decrease of the population as dechlorination ceased confirms that the diminishing availability of congeners was the reason for the incomplete dechlorination. Recent findings have shown that a second phase of dechlorination of certain congeners can occur after a long lag. 45 refs., 8 figs.

Kim, J.S.; Sokol, R.C.; Liu, X.; Bethoney, C.M.; Rhee, G.Y. [State Univ. of New York and New York State Department of Health, Albany, NY (United States)

1996-12-31

53

A Review on Factors Affecting Drying Process of Pistachio and Their Impact on Product’s Quality  

Directory of Open Access Journals (Sweden)

Full Text Available

This review is focusing on the parameters affecting the quality of pistachio during hot-air drying process. Accordingly,
the various common existing processing methods are reviewed extensively using the current literature to investigate the
latest developments in this regard. The findings revealed that both of the type of method used as well as the parameters
controlling the drying rate, have different impacts on final product’s quality.
The study concluded that the sun drying method has the best final quality as well as to lowest energy cost. This study
provides a guide for the food technologist to the select the optimum method by which the best quality can be produced and
minimum energy can be spent.

K. A. Abbas

2010-02-01

54

Factors affecting plasmid production in Escherichia coli from a resource allocation standpoint  

OpenAIRE

Abstract Background Plasmids are being reconsidered as viable vector alternatives to viruses for gene therapies and vaccines because they are safer, non-toxic, and simpler to produce. Accordingly, there has been renewed interest in the production of plasmid DNA itself as the therapeutic end-product of a bioprocess. Improvement to the best current yields and productivities of such emerging processes would help ensure economic feasibility on the industrial scale. Our goal, therefore, was to dev...

Cunningham Drew S; Koepsel Richard R; Ataai Mohammad M; Domach Michael M

2009-01-01

55

Factors affecting the production of lactulose by Lactobacillus acidophilus NRRL 4495 ?-galactosidase and its biological activity  

OpenAIRE

Aim: Production of lactulose and other oligosaccharides by Lactobacillus acidophilus NRRL 4495 â-galactosidase andtheir biological activity. Methodology and Results: The transgalactosylation activity of Lactobacillus acidophilus NRRL 4495 B-galactosidase was investigated under different conditions for synthesis of lactulose and oligosaccharides. The synthesis was optimized with respect to pH; time; enzyme concentration and substrates ratio (lactose: fructose). Maximum production forlactulose...

Abou-romia, R.; Ismail, S. A. E.; Helmy, W. A.; El-mohamady, Y.; Hashem, A. M.

2013-01-01

56

Factors affecting process temperature and biogas production in small-scale rural biogas digesters in winter in northern Vietnam  

DEFF Research Database (Denmark)

This study investigated the main factors influencing digester temperature and methods to reduce heat losses during the cold season in the subtropics. Four composite digesters (two insulated and two uninsulated) were buried underground to measure their internal temperature (°C) at a depth of 140 cm and 180 cm, biogas production and methane (CH4) concentration in biogas from August to February. In parallel the temperature of the air (100 cm above ground), in the slurry mixing tank and in the soil (10, 100, 140, and 180 cm depth) was measured by thermocouple. The influent amount was measured daily and the influent chemical composition was measured monthly during the whole experimental period. Seasonal variations in air temperature significantly affected the temperature in the soil, mixing tank and digester. Consequently, biogas production, which is temperature dependent, was influenced by the season. The main factors determining the internal temperature in the digesters were insulation with Styrofoam, air temperature and temperature of slurry in the mixing tank. Biogas production is low due to the cold climate conditions in winter in Northern Vietnam, but the study proved that storing slurry in the mixing tank until its temperature peak at around 14:00 h will increase the temperature in the digester and thus increase potential biogas production. Algorithms are provided linking digester temperature to the temperature of slurry in the mixing tank. © 2014 by Asian-Australasian Journal of Animal Sciences.

Cuong, Pham Hung; Vu, C.C.

2014-01-01

57

Factors affecting the fermentative production of a lysozyme-binding antibody fragment in Escherichia coli.  

Science.gov (United States)

Fed-batch fermentation for production of a single-chain Fv antibody fragment (scFv) expressed as a recombinant periplastic protein from Escherichia coli was investigated. A high cell density of 50 g dry cell weight per liter was routinely achieved in a 14-L vessel by controlled exponential feeding of glucose to impose a constant specific growth rate. Following biomass accumulation, induction of the tac promoter by addition of IPTG was accompaied by a linear feed of yeast extract. The concentration of yeast extract feed was found to be highly influential upon both concentration and location of active product. Although scFv fragments were specifically targeted to the periplasmic space, at yeast extract feed rates of 0.72 g/h the final location was largely extracellular (68% to 79%). Total concentrations (extracellular + periplasmic) were of the order of 5 to 8 mg/L. A ten-fold increase in yeast extract supply increased total scFv concentration to almost 200 mg/L and 78% of this yield was retained in the periplasm. Control of such leakage of the recombinant product is fundamental to process design of downstream operations for product recovery. PMID:18634062

Harrison, J S; Keshavarz-Moore, E; Dunnill, P; Berry, M J; Fellinger, A; Frenken, L

1997-03-20

58

Factors affecting the production of lactulose by Lactobacillus acidophilus NRRL 4495 ?-galactosidase and its biological activity  

Directory of Open Access Journals (Sweden)

Full Text Available Aim: Production of lactulose and other oligosaccharides by Lactobacillus acidophilus NRRL 4495 â-galactosidase andtheir biological activity. Methodology and Results: The transgalactosylation activity of Lactobacillus acidophilus NRRL 4495 B-galactosidase was investigated under different conditions for synthesis of lactulose and oligosaccharides. The synthesis was optimized with respect to pH; time; enzyme concentration and substrates ratio (lactose: fructose. Maximum production forlactulose was found to be 25 g/L at pH 6.6 with 40: 20% (w/v lactose to fructose, respectively and enzyme concentration 4 IU/mL after 7 h. With respect to the other oligosaccharides the maximum yield (19 .68 g/L was obtained under the same conditions but with enzyme concentration 2 IU/mL and after 10 h. As a new pharmaceutical application the produced lactulose and oligosaccharide and their sulfated derivative were found to have fibrinolytic activity, but theyfailed to act as anticoagulant. Conclusion significance and impact of study: the research leads to increase the production of lactulose and other oligosaccharides with a significant yield and discovered a new pharmaceutical application for all the products.

Abou-Romia, R.

2013-01-01

59

Exopolysaccharides Production by Pleurotus pulmonarius: Factors Affecting Formation and Their Structures  

Directory of Open Access Journals (Sweden)

Full Text Available The optimization of exopolysaccharides (EPS produced by Pleurotus pulmonarius was carried out. Malt extract at 1.5 % (w/v showed the highest EPS production after 10 days of submerged incubation and initial pH 5.5. 5.5% (w/v glucose and 0.4% (w/v potassium nitrate as sole carbon and nitrogen sources were the best stimulators for EPS production respectively. Suitable incubation temperature was found to be 30°C. At the end of these series of experiments we have obtained (280 mg/100 ml of EPS. The physicochemical characterization of EPS was studied and the structure was confirmed by the infrared spectroscopic analysis (IR.

Mahmoud M. Nour El-Dein

2004-01-01

60

Factors affecting the production of 4-ethylphenol by the yeast Dekkera bruxellensis in enological conditions  

OpenAIRE

The conversion of p-coumaric acid into 4-ethylphenol was studied in Dekkera bruxellensis ISA 1791 under defined conditions in synthetic media. The production of 4-ethylphenol occurred roughly between mid-exponential growth phase and the beginning of the stationary phase. This behaviour was observed when glucose was the only energy and carbon source, the conversion rate being close to 90%. Ethanol, as the single energy source, yielded conversion rates close to 80% while in the presenc...

Malfeito-ferreira, Manuel; Loureiro, Virgilio; Dias, L.; Pereira-da-silva, S.; Tavares, M.

2003-01-01

61

Factors affecting productivity of research-based pharmaceutical companies following mergers and acquisitions  

OpenAIRE

This paper analyzes the impact of mergers and acquisitions (M&A) activities in research-based pharmaceutical companies, specifically the impact of R&D expenditure, profitability, and sales revenue on firms’ productivity, R&D intensity, in pharmaceutical industries following M&A activities. The model was estimated using annual data, gathered from seven large research-based pharmaceutical companies pre and post-M&A, during the period 2003 until 2010. The regression analysis method uses a fixe...

Tjandrawinata, Raymond R.; Simanjuntak, Destrina Grace

2012-01-01

62

Evaluation of Factors Affecting Polyhydroxyalkanoates Production by Comamonas sp. EB172 Using Central Composite Design  

OpenAIRE

Aims: Statistical approach, central composite design (CCD) was used to investigate the complex interaction among temperature (25-37 °C), initial medium pH (5-9), inoculum size (4-10 % (v/v)), concentration of (NH4)2SO4 (0-1 g/L) and concentration of mixed organic acids (5-10 g/L) in the production of polyhydroxyalkanoates by Comamonas sp. EB172.Methodology and Results: Mixed organic acids derived from anaerobically treated palm oil mill effluent (POME) containing acetic:propionic:butyric (ra...

Noor Azman Mohd Johar; Mohd Ali Hassan,; Mohd Rafein Zakaria; Phang Lai Yee; Yoshihito Shirai,; Hidayah Ariffin

2012-01-01

63

Factors affecting mosquito production from stormwater drains and catch basins in two Florida cities.  

Science.gov (United States)

Mosquito production from drains and catch basins in the cities of Vero Beach and Key West, FL were monitored from May 2004 through August 2005. A total of 48,787 mosquitoes were captured during the study. Of these, over 99% belonged to two species, Culex nigripalpus Theobald (2,630) and Culex quinquefasciatus Say (45,946). Other species collected included Culex restuans Theobald, Culex salinarius Coquillett, Aedes aegypti (L.), Aedes albopictus (Skuse), and Uranotaenia lowii Theobald. Significantly greater numbers of Cx. nigripalpus were collected at Vero Beach than at Key West, but no significant differences in numbers of Cx. quinquefasciatus and in total numbers of mosquitoes between the two cities were evident. Rainfall, salinity, type of structure, structure setting, and presence or absence of predators or competitors influenced the numbers of mosquitoes collected and/or the frequency of positive, negative, dry, or flooded samples. PMID:17249351

Rey, Jorge R; O'Meara, George F; O'Connell, Sheila M; Cutwa-Francis, Michele M

2006-12-01

64

A geostatistical synthesis study of factors affecting gross primary productivity in various ecosystems of North America  

Science.gov (United States)

A coupled Bayesian model selection and geostatistical regression modeling approach is adopted for empirical analysis of gross primary productivity (GPP) at six AmeriFlux sites, including the Kennedy Space Center Scrub Oak, Vaira Ranch, Tonzi Ranch, Blodgett Forest, Morgan Monroe State Forest, and Harvard Forest sites. The analysis is performed at a continuum of temporal scales ranging from daily to monthly, for a period of seven years. A total of 10 covariates representing environmental stimuli and indices of plant physiology are considered in explaining variations in GPP. Similarly to other statistical methods, the presented approach estimates regression coefficients and uncertainties associated with the covariates in a selected regression model. Unlike traditional regression methods, however, the approach also estimates the uncertainty associated with the selection of a single "best" model of GPP. In addition, the approach provides an enhanced understanding of how the importance of specific covariates changes with the examined timescale (i.e. temporal resolution). An examination of changes in the importance of specific covariates across timescales reveals thresholds above or below which covariates become important in explaining GPP. Results indicate that most sites (especially those with a stronger seasonal cycle) exhibit at least one prominent scaling threshold between the daily and 20-day temporal scales. This demonstrates that environmental variables that explain GPP at synoptic scales are different from those that capture its seasonality. At shorter time scales, radiation, temperature, and vapor pressure deficit exert the most significant influence on GPP at most examined sites. At coarser time scales, however, the importance of these covariates in explaining GPP declines. Overall, unique best models are identified at most sites at the daily scale, whereas multiple competing models are identified at longer time scales.

Yadav, V.; Mueller, K. L.; Dragoni, D.; Michalak, A. M.

2010-09-01

65

A geostatistical synthesis study of factors affecting gross primary productivity in various ecosystems of North America  

Directory of Open Access Journals (Sweden)

Full Text Available A coupled Bayesian model selection and geostatistical regression modeling approach is adopted for empirical analysis of gross primary productivity (GPP at six AmeriFlux sites, including the Kennedy Space Center Scrub Oak, Vaira Ranch, Tonzi Ranch, Blodgett Forest, Morgan Monroe State Forest, and Harvard Forest sites. The analysis is performed at a continuum of temporal scales ranging from daily to monthly, for a period of seven years. A total of 10 covariates representing environmental stimuli and indices of plant physiology are considered in explaining variations in GPP. Similarly to other statistical methods, the presented approach estimates regression coefficients and uncertainties associated with the covariates in a selected regression model. Unlike traditional regression methods, however, the approach also estimates the uncertainty associated with the selection of a single "best" model of GPP. In addition, the approach provides an enhanced understanding of how the importance of specific covariates changes with the examined timescale (i.e. temporal resolution. An examination of changes in the importance of specific covariates across timescales reveals thresholds above or below which covariates become important in explaining GPP. Results indicate that most sites (especially those with a stronger seasonal cycle exhibit at least one prominent scaling threshold between the daily and 20-day temporal scales. This demonstrates that environmental variables that explain GPP at synoptic scales are different from those that capture its seasonality. At shorter time scales, radiation, temperature, and vapor pressure deficit exert the most significant influence on GPP at most examined sites. At coarser time scales, however, the importance of these covariates in explaining GPP declines. Overall, unique best models are identified at most sites at the daily scale, whereas multiple competing models are identified at longer time scales.

V. Yadav

2010-09-01

66

A geostatistical synthesis study of factors affecting gross primary productivity in various ecosystems of North America  

Directory of Open Access Journals (Sweden)

Full Text Available A coupled Bayesian model selection and geostatistical regression modeling approach is adopted for empirical analysis of gross primary productivity (GPP at six AmeriFlux sites, including the Kennedy Space Center Scrub Oak, Vaira Ranch, Tonzi Ranch, Blodgett Forest, Morgan Monroe State Forest, and Harvard Forest sites. The analysis is performed at a continuum of temporal scales ranging from daily to monthly, for a period of seven years. A total of 10 covariates representing environmental stimuli and indices of plant physiology are considered in explaining variations in GPP. Similar to other statistical methods, the proposed approach estimates regression coefficients and uncertainties associated with the covariates in a selected regression model. However, unlike traditional regression methods, the presented approach also estimates the uncertainty associated with the selection of a single "best" model of GPP. In addition, the approach provides an enhanced understanding of how the importance of specific covariates changes with temporal resolutions. An examination of trends in the importance of specific covariates reveals scaling thresholds above or below which covariates become significant in explaining GPP. Results indicate that most sites (especially those with a stronger seasonal cycle exhibit at least one prominent scaling threshold between daily to 20-day temporal scale. This demonstrates that environmental variables that explain GPP at synoptic scales are different from those that capture its seasonality. At shorter time scales, radiation, temperature, and vapor pressure deficit exert most significant influence on GPP at most examined sites. However, at coarser time scales, the importance of these covariates in explaining GPP declines. Overall, unique best models are identified at most sites at the daily scale, whereas multiple competing models are identified at larger time scales. In addition, the selected models are able to explain a larger fraction of the observed variability for sites exhibiting strong seasonality.

V. Yadav

2010-02-01

67

Some Factors Affecting the Production of Carotenoids by Rhodotorula glutinis var. glutinis  

Directory of Open Access Journals (Sweden)

Full Text Available A new yeast strain isolated from pin cushion flower (Scabiosa atropurpura in our laboratory was selected from 200 yeast isolates as carotenoids producer and identified as Rhodotorula glutinis var. glutinis. The selected isolate was grown in synthetic medium to study the effect of carbon to nitrogen ratio, sources of nitrogen and carbon, mineral salts and incubation temperature on carotenoids production. The results indicated the following optimal conditions: carbon to nitrogen ratio of 5, ammonium sulphate as nitrogen source, sucrose as carbon source, presence of zinc sulphate in the medium and cultivation temperature of 25?C. The studied factors affected the dry biomass as well as the proportion of carotenoids and consequently the colour of pellets of the yeast. The yeast strain was grown under the optimal conditions to study the changes occurring in the medium and the pellets during carotenoids production for 6 days. Carotenoids production started after the first day of incubation and most of the carotenoids content in the yeast cells was produced during stationary phase. The highest cellular (861 ?g?g–1 and volumetric (1.9 mg?L–1 carotenoids content were ob- tained after 5 days of growth.

Amr A. El-Banna

2012-01-01

68

Factors Affecting Students' Performance  

OpenAIRE

Determinants of students' performance have been the subject of ongoing debate among educators, academics, and policy makers. There have been many studies that sought to examine this issue and their findings point out to hard work, previous schooling, parents’ education, family income and self motivation as factors that have a significant effect on the students GPA. Most of those studies have focused on students' performance in the U.S. and Europe. However, since cultural differences may...

Harb, Nasri; El-shaarawi, Ahmed

2006-01-01

69

Production of bromoform and dibromomethane by Giant Kelp: Factors affecting release and comparison to anthropogenic bromine sources  

Science.gov (United States)

Macrocystis pyrifera (Giant Kelp), a dominant macroalgal species in southern California, produced 171 ng per g fresh wt (gfwt) per day of CHBr3 and 48 ng gfwt-1 d-1 of CH2Br2 during laboratory incubations of whole blades. Comparable rates were measured during in situ incubations of intact fronds. Release of CHBr3 and CH2Br2 by M. pyrifera was affected by light and algal photosynthetic activity, suggesting that environmental factors influencing kelp physiology can affect halomethane release to the atmosphere. Data from H2O2 additions suggest that brominated methane production during darkness is limited by bromide oxidant supply. A bromine budget constructed for a region of southern California indicated that bromine emitted from the use of CH3Br as a fumigant (1 x 108 g Br yr-1) dominates macroalgal sources (3 x 106 g Br yr-1). Global projections, however, suggest that combined emissions of marine algae (including microalgae) contribute substantial amounts of bromine to the global cycle, perhaps on the same order of magnitude as anthropogenic sources.

Goodwin, K.D.; North, W.J.; Lidstrom, M.E.

1998-01-01

70

Factors affecting productivity and the role of customer relationship management: A case study of home appliance manufacturing  

OpenAIRE

In today's competitive world, productivity- as a core source of production - is the most important target of the organization. Experimental studies in developed industrial countries prove that productivity improvements resulted from development of management systems play a more important role in production than physical increases in labor and capital factors. This paper, while focusing on productivity from a CRM perspective, employs a European Organizational Excellence Model framework to iden...

Saeed Mirzamohammadi; Forough Basirat Fard

2012-01-01

71

ANALYSIS OF THE FACTORS AFFECTING THE AVERAGE  

Directory of Open Access Journals (Sweden)

Full Text Available Productivity in agriculture most relevantly and concisely expresses the economic efficiency of using the factors of production. Labour productivity is affected by a considerable number of variables (including the relationship system and interdependence between factors, which differ in each economic sector and influence it, giving rise to a series of technical, economic and organizational idiosyncrasies. The purpose of this paper is to analyse the underlying factors of the average work productivity in agriculture, forestry and fishing. The analysis will take into account the data concerning the economically active population and the gross added value in agriculture, forestry and fishing in Romania during 2008-2011. The distribution of the average work productivity per factors affecting it is conducted by means of the u-substitution method.

Carmen BOGHEAN

2013-12-01

72

Reproductive status following artificial insemination and factors affecting conception rate in dairy cows in smallholder production systems  

International Nuclear Information System (INIS)

A survey was conducted to evaluate the reproductive status following artificial insemination (AI) and factors affecting conception rate (CR) in dairy cows under the smallholder production system, using the concentration of progesterone (P4) in milk samples taken on the day of AI (Sample 1), day 10-12 after AI (Sample 2) and day 22-24 after AI (Sample 3). The survey involved 115 cows in 33 farms. A follow-up study was carried out on four farms with interventions to improve record keeping, feed supplementation, heat detection and timely pregnancy diagnosis. Based on Sample 1 (n = 115), 93% of the cows had low P4 and were likely to have been in or close to oestrus at AI. Based on Samples 1 and 2 (n = 107), 85% of the cows had ovulatory oestrus. Based on all three samples (n = 59), 54.2% of the cows appeared to have conceived, 18.6% had either non-fertilization or early embryonic mortality and 18.6% had late embryonic mortality, luteal cyst or a persistent corpus luteum. The incidence of AI on pregnant animals was 1.7% and on those in doubtful reproductive status was 6.8%. The overall CR was 35.5% from 121 inseminations done on 115 cows. Mean intervals from calving to first AI (n = 77) and to conception (n = 43) were 90.7 and 113.6 days, respectively. The effects of level of milk production, lactation state and site of semen deposition on CR were significant (p 0.05) but CR tended to be lower in first parity cows and in cows with excessive body condition. The CR was also lower in farms that practice AI only in the afternoon, in farms where relatively less time was spent on dairy activities and in those farms practicing grazing and supplementation with concentrate only, as compared to those providing additional roughage supplementation. CR tended to be higher when AI was carried out by technicians with longer formal training. The survey showed that there was a high occurrence of ovulatory oestrus in cows under the smallholder production system but the CR obtained was low. This result can be attributed to factors related to the cow, nutrition, management and AI procedures. The interventions done on four farms resulted in shorter intervals from calving to first AI and conception, lower number of services per conception and higher CR, when compared with findings from the survey. (author)

73

Enterococcus faecium isolated from Lombo, a Portuguese traditional meat product: characterisation of antibacterial compounds and factors affecting bacteriocin production.  

Science.gov (United States)

Strain ST211CH, identified as a strain of Enterococcus faecium, isolated from Lombo produced a bacteriocin that inhibited the growth of Enterococcus spp., Listeria spp., Klebsiella spp., Lactobacillus spp., Pseudomonas spp., Staphylococcus spp. and Streptococcus spp. The mode of action of the bacteriocin named as bacteriocin ST211Ch was bactericidal against Enterococcus faecalis ATCC19443. As determined by Tricine-SDS-PAGE, the approximate molecular mass of the bacteriocin was 8.0 kDa. Loss in antimicrobial activity was recorded after treatment with proteolytic enzymes. Maximum activity of bacteriocin ST211Ch was measured in broth cultures of E. faecium strain ST211Ch after 24 h; thereafter, the activity was reduced. Bacteriocin ST211Ch remained active after exposure to various temperatures and pHs, as well as to Triton X-100, Tween-80, Tween-20, sodium dodecyl sulfate, NaCl, urea and EDTA. Effect of media components on production of bacteriocin ST211Ch was also studied. On the basis of PCR reactions targeting different bacteriocin genes, i.e. enterocins, curvacins and sakacins, no evidences for the presence of these genes in the total DNA of E. faecium strain ST211Ch was obtained. The bacterium most probably produced a bacteriocin different from those mentioned above. Based on the antimicrobial spectrum, stability and mode of action of bacteriocin ST211CH, E. faecium strain ST211Ch might be considered as a potential candidate with beneficial properties for use in biopreservation to control food spoilage bacteria. PMID:23234731

Todorov, S D; Favaro, L; Gibbs, P; Vaz-Velho, M

2012-12-01

74

Factors affecting the formation of disinfection by-products during chlorination and chloramination of secondary effluent for the production of high quality recycled water.  

Science.gov (United States)

During the production of high quality recycled water by reverse osmosis membrane filtration secondary effluent must be disinfected to limit biofouling on the membrane surface. Advanced Water Treatment Plants in South East Queensland, Australia use disinfectant contact times ranging from 30 min up to 24 h. Disinfectants such as chlorine and chloramines react with effluent organic matter to generate disinfection by-products (DBPs) which could be potentially hazardous to human health if the water is destined for supplementing public water supplies. In this context, secondary effluents are of concern because of their high total organic carbon content which can act as DBP precursors. Also, effluent organic matter may form different DBPs to those formed from natural organic matter during conventional drinking water treatment, either in quantity, identity or simply in the abundance of different DBPs relative to each other. It cannot be assumed per se with certainty that DBP formation will be affected in the same way by operational changes as in drinking water production. Response surface modelling has been employed in this study at the bench scale to investigate the effect of reaction time (0-24 h), pH (5.5-8.5), temperature (23-35 °C), disinfection strategy (chlorine vs chloramines used prior to membrane treatment) and the interaction between these different parameters on DBP formation during disinfection of secondary effluent. The concentration of halogenated DBPs formed during the first 24 h of reaction with the different disinfectants followed the order chlorination > in line-formed monochloramine > pre-formed monochloramine. Contact time with chlorine was the major influencing factor on DBP formation during chlorination, except for the bromine-containing trihalomethanes and dibromoacetonitrile for which pH was more significant. Chlorination at high pH led to an increased formation of chloral hydrate, trichloronitromethane, dibromoacetonitrile and the four trihalomethanes while the opposite effect was observed for the other targeted DBPs. Temperature was identified as the least influencing parameter compared to pH and reaction time for all DBPs in all the disinfection strategies, except for the formation of chloral hydrate where pH and temperature had a similar significance and bromoform that was similarly affected by temperature and reaction time. Chloramines employed at pH 8.5 reduced the concentration of all studied DBPs compared to pH 5.5. Furthermore, reaction time was the most significant factor for trichloronitromethane, chloroform, trichloroacetonitrile, dichloroacetonitrile and bromochloroacetonitrile formation while pH was the most influencing factor affecting the formation of the remaining DBPs. PMID:24095593

Doederer, Katrin; Gernjak, Wolfgang; Weinberg, Howard S; Farré, Maria José

2014-01-01

75

Analysis of Factors Affecting on Risk Management of Wheat Production Among Wheat Farmers (Razavieh Region, Khorasan-E-Razavi Province, Iran  

Directory of Open Access Journals (Sweden)

Full Text Available The main purpose of this study was to analyze the Factors Affecting on risk management in wheat production among farmers of Razavieh region (Khorasan-E-Razavi province, Iran. Statistical population of the study was 1520 farmers that they had water cultivation. By using of stratified proportional random sampling 156 respondents were selected from 8 villages. For the calculation of the risk-aversion coefficient degree among farmers, the Safety First Rule model was used. The findings revealed that the dominant respondents (65% were risk-averse. The results of exploratory factorial analysis showed that five factors determined about 74.267 % from total variance for wheat farmers' risk management that consist of: economy & marketing management factor, planting management factor, harvest management factor, infrastructure management of farming and risk-sharing management factor. From among of the above mentioned factors, the most important factor of risk management in study region was factor of economy & marketing management

V. Sarani

2011-12-01

76

Factors affecting vegetable stand establishment  

Directory of Open Access Journals (Sweden)

Full Text Available Several factors can influence stand establishment in vegetable crop production. Environmental conditions such as soil physical characteristics, temperature and moisture, various cultural practices, and diseases may all be limiting factors in establishing maximum stands and achieving the highest possible yields. Measures taken to increase stands include soil improvements, implementing cultural practices, and use of chemical and biological seed treatments. Combining seed treatments and cultural/tillage practices to minimize environmental constraints can lead to maximum stands and yields in the production of high quality vegetable crops.

Grassbaugh E. M.

1998-01-01

77

Factors affecting farmers networking decisions  

OpenAIRE

This paper analyses farmers' decisions to carry out transactions by using three different types of networks: input supply cooperatives, processing and/or marketing cooperatives, and producers associations. We use arguments from economic sociology and new institutional economics to define the main factors affecting farmers' networking decisions, namely relational, asset and location specificity. We applied a multivariate probit (MVP) model to a sample of 15,368 Italian farmers recorded in the ...

Pascucci, S.

2011-01-01

78

A Study of Factors Affecting on Men’s Skin Care ProductsPurchasing, Particularly in Karlstad, Sweden  

OpenAIRE

This study examines in some depth the influences of marketing mix, social factors, emergence of the metrosexual, evolution of femininity and masculinity, self-esteem and customer decision making on the male consumer behavior in purchasing skin care products in Sweden, particular in Karlstad. In do so, the theories of masculinity and femininity, customer behavior theory, customer decision making’s theory, theory of metrosexual and theory of the four Ps in marketing mix strategy are employed ...

Surakiatpinyo, Jiraporn; Moungkhem, Chanintorn

2010-01-01

79

The level of fertilizer use in sunflower production and the factors affecting the level of fertilizer use. A case study of Tokat province - Turkey  

International Nuclear Information System (INIS)

In this study, the factors affecting the amount of fertilizer used in sunflower production have been investigated. Average sunflower production area was determined as 21.91 da and sunflower was grown in irrigated conditions. Average plant nutrients was 20.92 kg N/da, 14.33 kg P2O5/da, and 2.22 kg K2O/da. As a result of the study, it has been determined that farmers used excess fertilizer in sunflower production. In addition, in the use of plant nutrients, the factors such as farm size, sources of fertilizer, irrigation possibilities, credit use situation, and the quality of land were statistically significant contrary to the factors such as land usage situation, educational level of farmers and deciding on fertilization. Refs. 6 (author)

80

Dietary factors affecting polyphenol bioavailability.  

Science.gov (United States)

While many epidemiological studies have associated the consumption of polyphenols within fruits and vegetables with a decreased risk of developing several chronic diseases, intervention studies have generally not confirmed these beneficial effects. The reasons for this discrepancy are not fully understood but include potential differences in dosing, interaction with the food matrix, and differences in polyphenol bioavailability. In addition to endogenous factors such as microbiota and digestive enzymes, the food matrix can also considerably affect bioaccessibility, uptake, and further metabolism of polyphenols. While dietary fiber (such as hemicellulose), divalent minerals, and viscous and protein-rich meals are likely to cause detrimental effects on polyphenol bioaccessibility, digestible carbohydrates, dietary lipids (especially for hydrophobic polyphenols, e.g., curcumin), and additional antioxidants may enhance polyphenol availability. Following epithelial uptake, polyphenols such as flavonoids may reduce phase II metabolism and excretion, enhancing polyphenol bioavailability. Furthermore, polyphenols may act synergistically due to their influence on efflux transporters such as p-glycoprotein. In order to understand polyphenol bioactivity, increased knowledge of the factors affecting polyphenol bioavailability, including dietary factors, is paramount. PMID:24828476

Bohn, Torsten

2014-07-01

81

Hydrolysis and redox factors affecting analysis of common phenolic marker compounds in botanical extracts and finished products.  

Science.gov (United States)

Many of the marker compounds analyzed in herbal products are redox-active phenolic molecules, which are commonly found in plants as components of glycosides and starch polymers. Variability in degree of sample hydrolysis can occur due to differences in water content, pH, and temperature. Sonication versus shaking during extraction can also influence hydrolysis and oxidation of sensitive compounds. Some traditional botanical extract marker compounds are esters and glycosides of phenolics such as echinacoside from Echinacea while others are free phenolics, such as quercetin from glycosides in Ginkgo. Optimizing hydrolysis conditions maximizes free quercetin levels, but lowers echinacoside levels. Furthermore, acidic hydrolysis conditions mimic stomach conditions encountered by oral supplements and protect resulting free phenolics from oxidation. Oxidative degradation of botanical phenolic markers can be initiated by light, sonication, oxygen, basic pH conditions, heat, redox-active solvents, and formulation additives. Some phenolic markers reversibly cycle through multiple oxidation states creating a formula-specific equilibrium of oxidation states. Finished product formulations that include easily oxidized phenolics, carbonates, phosphates, and transition metals affect sample hydrolysis degree and redox equilibria, and quantitation. By recognizing and controlling hydrolysis and oxidation variables, more accurate and rugged methods can be developed allowing for improved botanical standardization and finished product analysis. PMID:11048854

Baugh, S; Ignelzi, S

2000-01-01

82

Factors Affecting Hydrogen Production from Cassava Wastewater by a Co-Culture of Anaerobic Sludge and Rhodospirillum rubrum  

Directory of Open Access Journals (Sweden)

Full Text Available Series of batch experiments were used to investigate the effects of environmental factors i.e., total nitrogen and total phosphorus concentrations, initial pH, illumination pattern and stirring conditions on hydrogen production from cassava wastewater by a co-culture of anaerobic sludge and Rhodospirillum rubrum. The maximum of the hydrogen yield of 150.46 and 340.19 mL g-COD-1 was obtained at the total nitrogen and total phosphorus concentrations of 0.2 and 0.04 M, respectively. An effect of initial pH was investigated at COD:N:P ratio of 100:10:1. Results indicated that an optimum initial pH for hydrogen production was pH 7 with a high hydrogen yield of 158.78 mL g-COD-1 was obtained. No significantly different (p<0.05 in the effect of illumination pattern (24 h of light and 12 h dark/light cycle on hydrogen production were observed under continuous-illumination and periodic-illumination with hydrogen yield of 131.84 and 126.92 mL g-COD-1, respectively. Therefore, a periodic-illumination was applicable in hydrogen fermentation due to its cost-effective. Hydrogen fermentation with a stirring at 100 rpm provided more effective hydrogen production (164.83 mL g-COD-1 than static-fermentation (93.93 mL g-COD-1. The major soluble products from hydrogen fermentation were acetic and butyric acids, in the ranges of 28.33-48.30 and 35.23-66.07%, respectively, confirming an ability of a co-culture to produce hydrogen from cassava wastewater.

Alissara Reungsang

2007-01-01

83

Preharvest factors affecting fruit quality and safety  

OpenAIRE

Quality of fruit and vegetables is defined at harvest, and postharvest technologies only ensure that the rate at which products’ quality decline is minimized. Fruit growers are faced with the problem of producing enough quantities to be profitable but also to produce with high intrinsic quality. For consumers, flavor and safety are the most important characteristics of quality. The main factors that affect flavor quality are the genotype (cultivars/rootstocks), maturity at harve...

Oliveira, Cristina Moniz

2010-01-01

84

A review of factors affecting productivity of bald eagles in the Great Lakes region: implications for recovery.  

Science.gov (United States)

The bald eagle (Haliaeetus leucocephalus) population in North America declined greatly after World War II due primarily to the eggshell thinning effects of p,p'-DDE, a biodegradation product of DDT. After the banning of DDT in the United States and Canada during the early 1970s, the bald eagle population started to increase. However, this population recovery has not been uniform. Eagles nesting along the shorelines of the North American Great Lakes and rivers open to spawning runs of anadromous fishes from the Great Lakes still exhibit impaired reproduction. We have explored both ecological and toxicological factors that would limit reproduction of bald eagles in the Great Lakes region. Based on our studies, the most critical factors influencing eagle populations are concentrations of environmental toxicants. While there might be some continuing effects of DDE, total PCBs and most importantly 2,3,7,8-tetrachlordibenzo-p-dioxin equivalents (TCDD-EQ) in fishes from the Great Lakes and rivers open to spawning runs of anadromous fishes from the Great Lakes currently represent a significant hazard to bald eagles living along these shorelines or near these rivers and are most likely related to the impaired reproduction in bald eagles living there. PMID:7556024

Bowerman, W W; Giesy, J P; Best, D A; Kramer, V J

1995-01-01

85

Genetic Factors in Rhizobium Affecting the Symbiotic Carbon Costs of N2 Fixation and Host Plant Biomass Production  

DEFF Research Database (Denmark)

The effect of genetic factors in Rhizobium on host plant biomass production and on the carbon costs of N2 fixation in pea root nodules was studied. Nine strains of Rhizobium leguminosarum were constructed, each containing one of three symbiotic plasmids in combination with one of three different genomic backgrounds. The resulting strains were tested in symbiosis with plants of Pisum sativum using a flow-through apparatus in which nodule nitrogenase activity and respiration were measured simultaneously under steady state conditions. Nodules formed by strains containing the background of JI6015 had the lowest carbon costs of N2 fixation (7.10–8.10 ?mol C/?mol N2), but shoot dry weight of those plants was also smaller than that of plants nodulated by strains with the background of B151 or JI8400. Nodules formed by these two strain types had carbon costs of N2 fixation varying between 11.26 and 13.95 ?mol C/?mol N2. The effect of symbiotic plasmids on the carbon costs was relatively small. A time-course experiment demonstrated that nodules formed by a strain derived from JI6015 were delayed in the onset of nitrogenase activity and had a lower rate of activity compared to nodules induced by a strain with the background of B151. The relationship between nitrogenase activity, carbon costs of N2 fixation and host plant biomass production is discussed.

SkØt, L.; Hirsch, P. R.

1986-01-01

86

Environmental Factors Affecting Production, Release, and Field Populations of Conidia of Alternaria alternata, the Cause of Brown Spot of Citrus.  

Science.gov (United States)

ABSTRACT Alternaria brown spot, caused by Alternaria alternata pv. citri, affects many tangerines and their hybrids, causing loss of immature leaves and fruit and reducing the marketability of the remaining fruit. Conidial production of A. alternata was greatest on mature leaves moistened and maintained at near 100% relative humidity (RH) for 24 h, whereas leaves that had been soaked or maintained at moderate RH produced few conidia. Conidial release from filter paper cultures and infected leaves was studied in a computer-controlled environmental chamber. Release of large numbers of conidia was triggered from both substrates by sudden drops in RH or by simulated rainfall events. Vibration induced release of low numbers of conidia, but red/infrared irradiation had no effect. In field studies from 1994 to 1996, air sampling with a 7-day recording volumetric spore trap indicated that conidia were present throughout the year with periodic large peaks. The number of conidia captured was not closely related to rainfall amounts or average wind speed, but was weakly related to the duration of leaf wetness. Likewise, disease severity on trap plants placed in the field weekly during 1995 to 1996 was not closely related to conidial numbers or rainfall amounts, but was weakly related to leaf wetness duration. Sufficient inoculum appears to be available to allow infection to occur throughout the year whenever susceptible host tissue and moisture are available. PMID:18944857

Timmer, L W; Solel, Z; Gottwald, T R; Ibañez, A M; Zitko, S E

1998-11-01

87

Factors affecting patient dose in diagnostic radiology  

International Nuclear Information System (INIS)

The report, Factors Affecting Patient Dose in Diagnostic Radiology is divided into three main sections. Part one is introductory and covers the basic principles of x-ray production and image formation. It includes discussion of x-ray generators and x-ray tubes, radiation properties and units, specification and measurement of x-ray beams, methods of patient dose measurement, radiation effects, radiation protection philosophy and finally the essentials of imaging systems. Part two examines factors affecting the x-ray output of x-ray machines and the characteristics of x-ray beams. These include the influence of heat ratings, kVp, waveform, exposure timer, filtration, focus-film distance, beam intensity distribution, x-ray tube age and focal spot size. Part three examines x-ray machine, equipment and patient factors which affect the dose received by individual patients. The factors considered include justification of examinations, choice of examination method, film/screen combinations, kVp, mAs, focus-film distance, collimation and field size, exposure time, projection, scatter, generator calibration errors, waveform, filtration, film processing and patient size. The patient dose implications of fluoroscopy systems, CT scanners, special procedures and mammography are also discussed. The report concludes with a brief discussion of patient dose levels in New Zealand and dose optimisation. 104 refs., 32 figs., 27 tabs

88

Factors affecting the production of biomass by a nitrogen-fixing blue-green alga in outdoor culture  

Energy Technology Data Exchange (ETDEWEB)

The effectiveness of an aeration-shaking (air-lift) system for outdoor biomass photoproduction by the N2-fixing filamentous blue-green alga Anabaena variabilis was evaluated and the influence of relevant fractors on the productivity of the system was assessed. Air at a flow rate of 60 liters per liter of cell suspension per h was enough, by itself, to promote adequate turbulence and to supply the gaseous nutrients (CO/sub 2/ and N2) needed for maximal productivity. The addition of either or both, CO/sub 2/ and combined nitrogen (as KNO/sub 3/ or NH/sub 4/Cl), did not result in any increase in productivity. In summer and winter, optimal cell density for a suspension depth of 25 cm was 0.2-0.3 g (dry weight) per liter and 0.1-0.2 g (dry weight) per liter respectively. Reciprocally, optimal suspension depth for a cell density of 0.2 g (dry weight) per liter was 20-25 cm in summer and below 15 cm in winter. Optimal values for pH and temperature were 8.2-8.4 and 30-35 degrees C, respectively. Under optimal conditions, mean productivity values were about 13 g (dry weight)/square m per day in summer and 6 g (dry weight)/square m per day in winter. Net protein content of A. variabilis cells was higher than 50%, and nitrogen accounted for 10% of the dry biomass. From the productivity and nitrogen content data, the N2 fixation rate in outdoor cultures of A. variabilis can be estimated to be higher than 1 g N/square m per day, i.e. more than 3 t N per hectare per year when values are extrapolated both in time and area. (Refs. 18).

Fontes, A.G.; Vargas, M.A.; Moreno, J.; Guerrero, G.M.; Losada, M.

1987-01-01

89

An analysis of the factors affecting the level of fertilizer use in crop production. A case study of Tokat - Turkey  

International Nuclear Information System (INIS)

In this study, socio-economic factors (size of land, number of irrigation, age of farmers, educational level of farmers, soil analysis, and extension services) to be effected to the level of fertilizer use have been investigated. It has been determined that socio-economic factors have an important effect on fertilizer use in tomatoes growing. However, their effects on fertilization in wheat and sugar beet growing is limited due to traditional and contract farming. And also, there is no effect of extension services in the region on the level of fertilizer use in all crops. The quantity of fertilizer used was 51.64 kg/da in sugar beet, 18.20 kg/da in wheat (dry), 19.03 kg/da in wheat (irrigated) and 73.77 kg/da in tomatoes growing. Refs. 5 (author)

90

Some Factors Affecting the Production of Carotenoids by Rhodotorula glutinis var. glutinis  

OpenAIRE

A new yeast strain isolated from pin cushion flower (Scabiosa atropurpura) in our laboratory was selected from 200 yeast isolates as carotenoids producer and identified as Rhodotorula glutinis var. glutinis. The selected isolate was grown in synthetic medium to study the effect of carbon to nitrogen ratio, sources of nitrogen and carbon, mineral salts and incubation temperature on carotenoids production. The results indicated the following optimal conditions: carbon to nitrogen ratio of 5, am...

El-banna, Amr A.; Abd El-razek, Amal M.; El-mahdy, Ahmed R.

2012-01-01

91

SUBTASK 1.7 EVALUATION OF KEY FACTORS AFFECTING SUCCESSFUL OIL PRODUCTION IN THE BAKKEN FORMATION, NORTH DAKOTA PHASE II  

Energy Technology Data Exchange (ETDEWEB)

Production from the Bakken and Three Forks Formations continues to trend upward as forecasts predict significant production of oil from unconventional resources nationwide. As the U.S. Geological Survey reevaluates the 3.65 billion bbl technically recoverable estimate of 2008, technological advancements continue to unlock greater unconventional oil resources, and new discoveries continue within North Dakota. It is expected that the play will continue to expand to the southwest, newly develop in the northeastern and northwestern corners of the basin in North Dakota, and fully develop in between. Although not all wells are economical, the economic success rate has been near 75% with more than 90% of wells finding oil. Currently, only about 15% of the play has been drilled, and recovery rates are less than 5%, providing a significant future of wells to be drilled and untouched hydrocarbons to be pursued through improved stimulation practices or enhanced oil recovery. This study provides the technical characterizations that are necessary to improve knowledge, provide characterization, validate generalizations, and provide insight relative to hydrocarbon recovery in the Bakken and Three Forks Formations. Oil-saturated rock charged from the Bakken shales and prospective Three Forks can be produced given appropriate stimulation treatments. Highly concentrated fracture stimulations with ceramic- and sand-based proppants appear to be providing the best success for areas outside the Parshall and Sanish Fields. Targeting of specific lithologies can influence production from both natural and induced fracture conductivity. Porosity and permeability are low, but various lithofacies units within the formation are highly saturated and, when targeted with appropriate technology, release highly economical quantities of hydrocarbons.

Darren D. Schmidt; Steven A. Smith; James A. Sorensen; Damion J. Knudsen; John A. Harju; Edward N. Steadman

2011-10-31

92

FACTORS AFFECTING THE POST LARVAL PRODUCTION OF MACROBRACHIUM ROSENBERGII (DE MAN BY USING DIFFERENT TYPES OF FEEDS  

Directory of Open Access Journals (Sweden)

Full Text Available In the present study was conducted to know the importance of for the effects of different types of feed on larval survival of Macrobrachium rosenbergii.  In this experiment total nine tanks are selected and were divided, placed under three experiments (Viz. E1, E2, and E3 each having three replicates. The feshly hatched out larvae (Zoea were collected and stocked in three different treatment tanks. The larvae were stoked in E1 (Artemia nauplii and egg custard, E2 (Artemia nauplii only and E3 (Freeze dried (Cyclop-eeze only.  The survival rate of postlarvae found to vary from 5 to 40%. Highest rate of survival was recorded for the treatment of E1 (31.5- 40.2 % and the lowest survival was recorded in E3 (3.0- 5.2 %. Such variations was occurred due to higher nutritive and growth promoting value of egg custard. The result obtained from the present study indicated that rearing of freshwater prawn larvae by improved management techniques can be considered economically viable and acceptable. So the production of post larvae of prawn was increased significantly by using Artemia nauplii and egg custard as larval diet.

Shailender M*, Krishna PV, Suresh Babu CH

2013-01-01

93

Column: Factors Affecting Data Decay  

Directory of Open Access Journals (Sweden)

Full Text Available In nuclear physics, the phrase decay rate is used to denote the rate that atoms and other particles spontaneously decompose. Uranium-235 famously decays into a variety of daughter isotopes including Thorium and Neptunium, which themselves decay to others. Decay rates are widely observed and wildly different depending on many factors, both internal and external. U-235 has a half-life of 703,800,000 years, for example, while free neutrons have a half-life of 611 seconds and neutrons in an atomic nucleus are stable.We posit that data in computer systems also experiences some kind of statistical decay process and thus also has a discernible decay rate. Like atomic decay, data decay fluctuates wildly. But unlike atomic decay, data decay rates are the result of so many different interplaying processes that we currently do not understand them well enough to come up with quantifiable numbers. Nevertheless, we believe that it is useful to discuss some of the factors that impact the data decay rate, for these factors frequently determine whether useful data about a subject can be recovered by forensic investigation.(see PDF for full column

Kevin Fairbanks

2012-06-01

94

Teratogenic factors affect transcription factor expression.  

Science.gov (United States)

Chemical compounds are produced every day, many with adverse effects on human health, and hence it is vital to predict the risks to humans simply, rapidly, and accurately. Teratogens have a serious impact on fetal development. This has been studied mainly by phenotypic analysis of experimental animals. However, since phenotypes can vary within different species, we established a new evaluation system based on our recent finding that teratogens influence Hox gene expression in mice. Similarly to the Hox gene expression changes, the expression patterns of several transcription factors involved in development, including the Dlx, Irx, Sall, and T-box families, were altered after 6 h of exposure to retinoic acid (RA) or 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). The expression changes in Dlx4, Dlx6, Irx5, Sall2, Sall3, Sall4, Tbx10, and Tbx22 were linked to teratogen-induced phenotypes, and our results indicate that expression changes in developmental transcription factors can help to predict teratogenic risk. PMID:23649242

Kojima, Takuya; Asano, Shinya; Takahashi, Naoki

2013-01-01

95

Factors affecting dosimetry in pregnancy  

International Nuclear Information System (INIS)

It is apparent the fetal radiation dose depends upon many factors, one of the most significant in the last half of pregnancy being placental transfer which can vary with the nuclide, compound, species and gestational age; and must be investigated for each material. The difficulty of obtaining human data almost forces us to rely on animal data which currently are sparse. The experimental methods have varied, and few nuclides have been investigated. More biological data must be accumulated before the radiation dose to the fetus from the many radionuclides in our modern world can adequately be defined

96

Critical Factors that Affecting Efficiency of Solar Cells  

OpenAIRE

A solar cell or photovoltaic cell is a device which generates electricity directly from visible light. However, their efficiency is fairly low. So, the solar cell costs expensive according to other energy resources products. Several factors affect solar cell efficiency. This paper presents the most important factors that affecting efficiency of solar cells. These effects are cell temperature, MPPT (maximum power point tracking) and energy conversion efficiency. The changing of these factors i...

Furkan Dincer; Mehmet Emin Meral

2010-01-01

97

Critical Factors that Affecting Efficiency of Solar Cells  

Directory of Open Access Journals (Sweden)

Full Text Available A solar cell or photovoltaic cell is a device which generates electricity directly from visible light. However, their efficiency is fairly low. So, the solar cell costs expensive according to other energy resources products. Several factors affect solar cell efficiency. This paper presents the most important factors that affecting efficiency of solar cells. These effects are cell temperature, MPPT (maximum power point tracking and energy conversion efficiency. The changing of these factors improves solar cell efficiency for more reliable applications.

Furkan Dincer

2010-05-01

98

Factors Affecting the Nucleosynthesis of CALCIUM-48  

Science.gov (United States)

Factors affecting the synthesis of 48Ca in stellar environments are discussed. These factors include the entropy of the matter which is being processed and the neutron richness of the matter. The production of 48Ca depends highly on the entropy of the expanding matter. High entropy environments produce little 48Ca, while low entropy environments produce abundant 48Ca. This suggests that Type Ia supernovae are responsible for 48Ca production. The abundance of 48Ca in an expansion is set by the evolution of a quasiequilibrium (QSE) cluster of nuclei during the expansion. The QSE cluster is composed of nuclei heavier than 48Ca for high entropy expansions. In low entropy expansions the nuclei in the cluster are lighter and 48Ca acts as an abundance post. The effect of changing reaction rates on the abundance of 48Ca is explored. The QSE around 48Ca minimizes these effects, holding them to less than 5%. The 'alpha process' is also discussed. The effects of eliminating alpha captures for nuclei with Z>28 and Z>12 in expansions are shown. Alpha captures for Z>28 are not important for setting abundances; those for 12<= Z<=28 are important, however. This suggests that the 'alpha process' has been misnamed. A shifting QSE can account for observations which have been attributed to the alpha process.

Krishnan, Tracy Dawn

99

Examining the Factors Affecting Student Dropout  

Directory of Open Access Journals (Sweden)

Full Text Available This study examined the factors affecting student dropouts in an online certificate program. In this research, a combination of quantitative and qualitative methods was used. Online Course Dropout Survey was developed and used to determine which factors affect student attrition from the program. The dropout survey was sent by e-mail to 98 students who had dropped the program. Twenty-six students returned the survey. The findings show that the most important factor affecting student retention is finding sufficient time to study. Having personal problems and affordability of the program took second and third place.

Fethi Ahmet INAN

2006-07-01

100

ENVIRONMENTAL FACTORS AFFECTING BREAST CANCER SUSCEPTIBILITY  

Science.gov (United States)

Environmental Factors Affecting Breast Cancer Susceptibility Suzanne. E. Fenton US EPA, ORD, MD-67 NHEERL, Reproductive Toxicology Division, Research Triangle Park, NC 27711. Breast cancer is still the most common malignancy afflicting women in the Western world. Alt...

101

Economic and Cultural Factors Affecting University Excellence  

Science.gov (United States)

Purpose: The ranking of top universities in the world has generated increased interest in the factors that enhance university performance. The purpose of this paper is to identify economic and cultural factors that affect the number of top ranking universities in each country. Design/methodology/approach: This paper first identifies the number of…

Jabnoun, Naceur

2009-01-01

102

A Survey on Factors Affecting on Consumer’s Potential Willingness to Pay for Organic Products in Iran (A Case Study)  

OpenAIRE

This study determined factors influencing on consumer’s potential willingness to pay for organic products in Iran. Data collected with filling 240 questionnaires in 2006 from Mashhad’s households and analyzed using Tobit model. Results showed that product appearance and measure of consumers’ information is effective on willingness to pay for organic products. In addition, consumers’ anxieties from chemical residue in nutrition have positive effect on willingn...

Ghorbani, M.; Hamraz, S.

2009-01-01

103

The factors affecting the recarburization process indicators  

OpenAIRE

The article presents the factors affecting the carburizing rates obtained (rate and efficiency) during the process of melting cast iron. The analysis includes the recarburizer type (anthracite, natural and synthetic graphite, petroleum coke) and particle size. Further factors considered in work are the methods of recarburization (recarburizer introduction to a solid charge and on the surface of the metal bath) and the parameters of the melt (temperature and chemical composition). The analysis...

Janerka, K.; Szajnar, J.; Jezierski, J.; Bartocha, D.

2011-01-01

104

Physical factors affecting the electrically assisted thermal bitumen recovery  

Energy Technology Data Exchange (ETDEWEB)

In the heavy oil industry, thermal processes are used to enhance oil recovery by increasing the reservoir temperature which results in better oil mobility. Low frequency heating (LFH) is a technology using electrical conductivity of connate water to propagate current between electrodes, thus generating heat in the reservoir through the Joule effect. During the preheating and production periods, many physical factors may affect the LFH process and the aim of this study was to determine which factors affect the process and how, using a particular pattern of electrodes. Simulations were conducted using the CMG Stars reservoir simulator under different configurations, conditions and parameters. Important physical properties and operational conditions affecting the LFH process were determined and results showed that convection heat, bulk electrical conductivity and power distribution can be improved by salt water circulation. This paper highlighted the physical factors affecting LFH efficiency and these findings will be useful for future process design.

Bogdanov, I.I.; Torres, J.-A.; Kamp, A.M. [CHLOE, University of Pau (France); Corre, B. [CSTJF, Total (France)

2011-07-01

105

An experiment on the factors affecting simple reaction time  

OpenAIRE

Reaction time is considered as an important measure that affects performance of an individual both in business and private life. Especially, reaction time, which can be defined as a period of time being required for giving appropriate responses to the perceived stimuli, is an important factor in terms of efficiency of organization and also health and safety at work. Moreover, reaction time is regarded as an important factor in product design. In this study, an experiment is designed to reveal...

Hale Akkocao?lu; Burcu Kaya; Ufuk Türen

2013-01-01

106

Factors affecting the performance of professional nurses in Namibia  

OpenAIRE

Background: Professional nurses play a vital role in the provision of health care globally. The performance of health care workers, including professional nurses, link closely to the productivity and quality of care provision within health care organisations. It was important to identify factors influencing the performance of professional nurses if the quality of health care delivery was to improved.Objectives: The aim of the present study was to identify factors affecting the performance of ...

Awases, Magdalene H.; Bezuidenhout, Marthie C.; Roos, Janetta H.

2013-01-01

107

How Employee Turnover Affects Productivity  

DEFF Research Database (Denmark)

Research on employee turnover suggests that turnover results in negative organization-level outcomes. This paper provides a firm-level analysis of the impact of the in- and outflows of human resources on productivity and how the presence of organizational slack resources moderates the effects of employee turnover. Drawing on a unique longitudinal dataset of 2,926 Danish manufacturing firms that combine individual-level data with firm-level data, the paper shows that job turnover has a substantial negative effect on total productivity but that the firm’s size, its capital intensity, and its age moderate this effect so that the negative consequences of employee turnover are less severe for larger, older and capital intensive firms. These moderating variables indicate the presence of slack resources in the firm, and thus that the accumulation of slack reduces the efficiency losses from employee turnover.

Eriksen, Bo

108

The factors affecting the recarburization process indicators  

Directory of Open Access Journals (Sweden)

Full Text Available The article presents the factors affecting the carburizing rates obtained (rate and efficiency during the process of melting cast iron. The analysis includes the recarburizer type (anthracite, natural and synthetic graphite, petroleum coke and particle size. Further factors considered in work are the methods of recarburization (recarburizer introduction to a solid charge and on the surface of the metal bath and the parameters of the melt (temperature and chemical composition. The analysis was based on experiments performed, the calculation results of computer simulations and literature data.

K. Janerka

2011-07-01

109

Factors affecting rectal temperature in infancy.  

OpenAIRE

The recordings of 1197 overnight rectal temperatures from infants of up to 24 weeks of age have been analysed with respect to 12 variables, including a number of risk factors for sudden infant death syndrome. Multivariable regression was used to identify if parental smoking, bottle feeding, sleeping position, and birth weight affect the overnight rectal temperature of infants. The rectal temperature, averaged over the period from three to five hours after the infants were put to bed, correlat...

Tuffnell, C. S.; Petersen, S. A.; Wailoo, M. P.

1995-01-01

110

Experimental factors affecting white strobe pulse frequency  

Energy Technology Data Exchange (ETDEWEB)

Changes made to the standard strobe compositions used as a baseline, and the resultant effects in intensity, duration and pulse frequency are described. The changes involved variations in particle sizes and mix ratios in order to cause performance changes in the original pyrotechnic strobe composition. Several factors, such as binder material, binder percentage, the addition of sulfur or antimony trisulfide and sulfates were found to affect strobe frequency. Technical data, photographic and videotape evidence of burning characteristics are highlighted. 3 refs., 7 figs.

Domanico, J. A. [Edgewood Chemical Biological Center (United States)

2000-04-01

111

EXPLORE SIGNIFICANT FACTORS TO AFFECT CUSTOMER INVOLVEMENT  

OpenAIRE

Although literature review supported the concept that customer loyalty, brand equity and perceived risk are significant factors to affect customer involvement, very limited studies have extensively examined the relationship among those variables. This research applied quantitative study to comprehensively explore the relationship between customer loyalty, brand equity, perceived risk and customer involvement for consumers. The population for this research was identified as consumers having th...

Yu-Jia Hu

2012-01-01

112

Factors Affecting E-Service Satisfaction  

OpenAIRE

User satisfaction is an important predictor of online consumer behavior and the success of a web-based system. If customers are satisfied with the services received through the online system, it is likely they will keep using the system. To examine factors affecting user satisfaction with e-services, a questionnaire was distributed to a random sample of (615) students out of (5918) at Petra University in Jordan to explore their perceptions. Regression analysis was conducted to test the hypoth...

Mohammed Mufaddy Al-Kasasbeh; Subhasish Dasgupta; Abeer Hmoud AL-Faouri

2011-01-01

113

FACTORS AFFECTING THE SPORT RELATED CONSUMER EXPENDITURES  

OpenAIRE

In recent years there has been a significant change in the importance given to economic and social role of sport related economic activities since sport has changed to a much broader concept involving sport clubs, associations, organizations and businesses where the implementation of carefully designed marketing strategies became vital for success. This study aims to explore the factors affecting the sport related consumer expenditures. Empirical results were obtained by means of a questionna...

Candemi?r, Aykan; Zalluhog?lu, Ali Erhan

2012-01-01

114

Which Factors Affect Adolescent Food Preferences?  

Directory of Open Access Journals (Sweden)

Full Text Available Hunger, extreme desire to eat a certain food, taste, price, and convenience are among the main There are various factors that affect food preferences. Hunger, extreme desire to eat a certain food, taste, price, and convenience are among the main factors affecting food preferences. Additionally, general nutritional habits, family, friends, commercials, and availability of the food are also important for food preferences. Also, past experiences with foods are related to preferring or rejecting some foods. Socializing more with increasing age causes change in the food preferences of adolescents. Unhealthy nutrition habits form as a result of the adolescents consuming fast foods, spending time with their friends outside the house, and consuming more ready-made foods. Current developments in the food industry result in an increase in variety and consumption of snacks such as cookies, chocolate, chips, and crackers in adolescents. Considering all these, in this rewiev article, environmental and personal factors affecting food preferences have been investigated. (Jo­ur­nal of Cur­rent Pe­di­at­rics 2013; 11: 121-7

Seray Kabaran

2013-12-01

115

Factors affecting the microstructure of porous ceramics  

OpenAIRE

In this study, porous ceramics were produced by using two methods: the polymeric sponge and foam method. Astudy of the effect of viscosity on the characteristics of the final product produced using the polymeric sponge method revealed that the microstructure of porous ceramics is highly affected by the viscosity of the slurry. The optimal ratio between porosity and the strength of the porous material was achieved by subsequently repeating the immersing and drying processes. Astudy of the poro...

DUSAN TRIPKOVIC; VESNA RADOJEVIC; RADOSLAV ALEKSIC

2006-01-01

116

Factors Affecting Rural Facilitators’ Role: Iran  

Directory of Open Access Journals (Sweden)

Full Text Available This study aimed to examine key factors affecting rural female facilitators’ role in participatory rural developmentin Tehran Province. Since the researchers intended to have abetter insight into the facilitators’ role and employ inquiry as alearning forum for bringing about changes for all participants,they preferred to use a case study based upon an appreciativeinquiry method. The study divided the factors affecting thefacilitators’ role into two main categories: driving factors andpreventing factors. The former are: two-way communication,election of rural eligible facilitators, participation, sense ofresponsibility, and the latter are: cultural and tribal fanaticism,lack of permanent female extension workers and frequentmanagement changes. Appreciative inquiry as a positive modeof action research could facilitate the process of education andcommunication for all stakeholders. We suggested that thereshould be a shift from the extension as a knowledge transfer tofacilitation as people’s own knowledge creation. This studyshowed that appreciative inquiry could facilitate the process ofchange and gender-awareness. This research method couldalso facilitate mutual communication between the rural facilitatorsand extension workers.

Mohammad Bagher Kamali

2011-03-01

117

From Perceptions to Practice: Factors Affecting Recast  

Directory of Open Access Journals (Sweden)

Full Text Available This review study was motivated by a debate about the role of recast in L2 learning. Recast is the most frequent type of feedback but probably the least effective one. While some researchers have criticized it as inefficient, others have supported it as an unobtrusive type of feedback especially useful during interactive activities. This review of studies on recast helps pinpoint the factors contributing to the effectiveness of recast. In this regard, two factors were found to have a determining role; saliency and learners’ proficiency level. Saliency concerns the noticeability of recast by learners. Different factors affect saliency including shortness of recast, added-stress on the erroneous part, number of corrections, and the focus of recast. On the other hand, the results of studies confirm the role of proficiency. In other words, proficient learners are more likely to notice their errors using recast even when it is insalient.

Sajjad Sepehrinia

2011-08-01

118

Factors affecting thermally simulated HAZ microstructures  

Energy Technology Data Exchange (ETDEWEB)

Thermal simulation of heat affected zones (HAZs) by resistance heating has found widespread application in weldability assessment and steel development programs. This is due to two main reasons: Firstly, using thermal simulation it is possible to reproduce a relatively large area of the HAZ microstructure of interest which can then be assessed by mechanical tests without the influence of neighboring microstructures. Secondly, the method represents a relatively cheap and quick alternative to the production of real welds with microstructures being reproducible from one specimen to the next. Although it is widely recognized that thermal simulation will never reproduce exactly the same microstructures as found in real weld HAZs, very little is still known about how thermally simulated and real weld HAZ microstructures compare. In the present work microstructural features of thermally simulated and real weld HAZs produced on two different offshore steels have therefore been compared. The grain coarsened heat affected zone (GCHAZ) and the intercritically reheated grain coarsened heat affected zone (ICGCHAZ) have been assessed. Both types of microstructures usually receive high attention in weldability studies due to their potential risk of producing low toughness values. The GCHAZ has been examined in terms of packet size and hardness whereas for the ICGCHAZ the interest was focused on the formation of second phase product during the second thermal cycle. The findings of this examination are discussed with respect to implications of the use of HAZ thermal simulation in steel comparison and mechanical testing programs.

Cardinal, N. [British Steel, Rotherham (United Kingdom). Welding and Engineering Metallurgy Dept.

1996-12-01

119

Factors affecting academic leadership in dermatology.  

Science.gov (United States)

Although prior studies have examined methods by which to recruit and retain academic dermatologists, few have examined factors that are important for developing academic leaders in dermatology. This study sought to examine characteristics of dermatology residency programs that affect the odds of producing department or division chairs/chiefs and program directors (PDs). Data regarding program size, faculty, grants, alumni residency program attended, lectures, and publications for all accredited US dermatology residency programs were collected. Of the 103 programs examined, 46% had graduated at least 1 chair/chief, and 53% had graduated at least 1 PD. Results emphasize that faculty guidance and research may represent modifiable factors by which a dermatology residency program can increase its graduation of academic leaders. PMID:25750963

Martires, Kathryn J; Aquino, Lisa L; Wu, Jashin J

2015-02-01

120

Factors affecting the placental transfer of actinides  

International Nuclear Information System (INIS)

The primary goal of this paper is to consider factors that affect the availability and transport of actinides from maternal blood, through the placenta, to the conceptus. These factors, of particular importance in scaling results from animals to man, include the route and temporal pattern of administration, the mass and physicochemical state of material administered, metabolism of the pregnant animal and fetal organs or tissue, and species-specific changes in placental structure relative to stage of gestation at exposure. Preliminary concepts for descriptive and kinetic models are proposed to integrate these results, to identify additional information required for developing more comprehensive models, and to provide a basis for scaling to human pregnancies for purposes of radiation dosimetry

121

Reappraising factors affecting mourning dove perch coos  

Science.gov (United States)

Results confirmed pairing as the primary factor influencing perch-cooing rates of wild mourning doves (Zenaida macroura). Marked unmated males cooed at substantially higher rates (6.2x) than mated males, had greater probability of cooing (2.3x) during 3-minute periods, and continued cooing longer each morning than mated males. Population density was not a major factor affecting cooing. Unmated males cooed more frequently in the presence of other cooing doves (P < 0.05) than when alone, but the number of additional doves above 1 was unimportant. Cooing rates of both mated and unmated males on areas with dissimilar dove densities were not significantly different. Within limits of standard call-count procedure, weather exerted no detectable influence on cooing.

Sayre, M.W.; Atkinson, R.D.; Baskett, T.S.; Haas, G.H.

1978-01-01

122

Economic Factors Affecting Diversified Farming Systems  

Directory of Open Access Journals (Sweden)

Full Text Available In response to a shift toward specialization and mechanization during the 20th century, there has been momentum on the part of a vocal contingent of consumers, producers, researchers, and policy makers who call for a transition toward a new model of agriculture. This model employs fewer synthetic inputs, incorporates practices which enhance biodiversity and environmental services at local, regional, and global scales, and takes into account the social implications of production practices, market dynamics, and product mixes. Within this vision, diversified farming systems (DFS have emerged as a model that incorporates functional biodiversity at multiple temporal and spatial scales to maintain ecosystem services critical to agricultural production. Our aim is to provide an economists' perspective on the factors which make diversified farming systems (DFS economically attractive, or not-so-attractive, to farmers, and to discuss the potential for and roadblocks to widespread adoption. We focus on how a range of existing and emerging factors drive profitability and adoption of DFS. We believe that, in order for DFS to thrive, a number of structural changes are needed. These include: 1 public and private investment in the development of low-cost, practical technologies that reduce the costs of production in DFS, 2 support for and coordination of evolving markets for ecosystem services and products from DFS and 3 the elimination of subsidies and crop insurance programs that perpetuate the unsustainable production of staple crops. We suggest that subsidies and funding be directed, instead, toward points 1 and 2, as well as toward incentives for consumption of nutritious food.

Maria S. Bowman

2013-03-01

123

AN OVERVIEW ON FACTORS AFFECTING GLOBAL HRM  

Directory of Open Access Journals (Sweden)

Full Text Available The mounting economic interdependence of countries globally through rising volume and multiplicity of cross border transactions in goods and services and international capital flows, and also through the more rapid and prevalent diffusion of technology had influences organizations that compete for customers with high expectations for performance, quality, and cost. The globe trade and industry order is changing speedily. Evolutionary transformations are taking place at revolutionary speed, principally pressed by strong external forces, arising out of a desire to rising competitiveness and competence. The organizations of world are no longer defined by national boundaries. Globalization also put forth stress on the Human Resource Management (HRM function to adjust to changing organizational needs, add greater value and hence, HRM is especially involved with those employees who are working across national boundaries in multinational or global enterprises. Functioning on an international level entails that the assumption of a universality of HR policies and practices and the faith in to administer in one best way has become indefensible. Aglobal organization wishes a worldwide HRM system that features decision making from a global point of view, managers from across national boundaries, and thoughts contributed by people from a diversity of cultures. The participants from different countries and cultures contribute ideas from a position of equality, rather than the home country's culture dominating. Organizations that function in more than one country must be acquainted with the countries that are not identical and differ in terms of many factors. This present research paper is an attempt to reviews major factors affecting HRM. The intention of this study is to examine the challenges/factors affecting the role of HRM.

G. G. Gondane

2014-09-01

124

Factors Affecting Electricity Demand in Jordan  

Directory of Open Access Journals (Sweden)

Full Text Available 1 The paper examines the relationship between electricity demand and climate/non-climate related factors using statistical regression analysis. 2 It focuses on the environmental, demographic, policy (energy pricing and technological factors as the main factors affecting the consumption pattern in Jordan. 3 The paper also presents the variations occurred in the electricity demand over the period 1994-2008. The variations that are observed during the period of study are: Shifting of the peak load occurrence from evening to morning period, Modification in the annual daily load curve especially in winter season, Variation in relationship between space temperature and demand especially in winter, and dramatic increase in electric generation after year 2003. The shift in peak load from evening to morning period is mainly due to technological factor as a result of wide use of the air conditions in houses, services and government offices for cooling in summer instead of ordinary air fans. The variations in consumption pattern between 2000 and 2007 are mainly associated with economic, social and demographic factors. The high demand at lower space temperature is governed by introducing new appliances for heating in winter as a result of low electricity pricing comparing with gasoline price. The dramatic increase in electric generation after 2003 is probably due to demographic factors as a result of high growth of population after the Gulf war II. 4 The correlation between the daily maximum loads in morning and evening periods with the differential temperature (?T above 20?C threshold in summer and below 15?C threshold in winter, shows pronounced changes in 2007 compared with year 2000. The regression tests show that a decrease of 1?C below 15?C threshold in winter 1 increases the morning demand by only 2 MW/?C in 2000 and 16.7 MW/?C in 2007, 2 decreases the evening peak by ?2.6 MW/1?C in 2000 and increases the evening peak by 22.9 MW/1?C in 2007. Results show that the demographic, technological, environmental and national energy pricing factors play a vital rule in consumption pattern in Jordan. Moreover, the paper reveals that planners and decision makers should be careful when applying new tariff in the developing countries such as Jordan.

Mohammad Awad Momani

2013-01-01

125

An experiment on the factors affecting simple reaction time  

Directory of Open Access Journals (Sweden)

Full Text Available Reaction time is considered as an important measure that affects performance of an individual both in business and private life. Especially, reaction time, which can be defined as a period of time being required for giving appropriate responses to the perceived stimuli, is an important factor in terms of efficiency of organization and also health and safety at work. Moreover, reaction time is regarded as an important factor in product design. In this study, an experiment is designed to reveal the factors that affect simple reaction time and the effects of (discrete / continuous variables such as age, height, weight, gender, sight defects, smoking and alcohol use, regular habits of sports and academic achievement on reaction time of individuals are investigated, and the findings are interpreted.

Hale Akkocao?lu

2013-10-01

126

Factors affecting sporoplasm release in Kudoa septempunctata.  

Science.gov (United States)

The myxosporean parasite Kudoa septempunctata has been isolated from cultured olive flounder (Paralichthys olivaceus) and was recently identified as a cause of food poisoning in humans. Since the sporoplasm plays an important role in causing diarrhea by invading intestinal cells, the specific factors affecting the release of sporoplasm from spores should be determined. Thus, we investigated the effect of digestive and serum enzymes, fetal bovine serum (FBS), temperature, and the role of glucose in cell culture media on the release of sporoplasm. Sporoplasm release was observed in the groups treated with FBS and media containing glucose. In addition, 1,10-phenanthroline inhibited the release of sporoplasm in the FBS medium. These results indicate that K. septempunctata uses glucose for releasing its sporoplasm and that zinc or metalloprotease is related to the release mechanism. The present study provides important information for the development of agents to prevent sporoplasm release and the consequent food poisoning caused by K. septempunctata. PMID:25563617

Shin, Sang Phil; Zenke, Kosuke; Yokoyama, Hiroshi; Yoshinaga, Tomoyoshi

2015-02-01

127

Factors affecting passive monitoring of radon  

International Nuclear Information System (INIS)

In recent years, increasing cancer has been expressed as a possible health hazards associated with long-term exposures to a large population at a low level of radon in the environment. Because radon is ubiquitous nuclide, nation-wide monitoring is necessary to determine lung cancer risk. For such purpose, passive sampling methods with track etch detector or charcoal adsorption collector may have the advantage in lower cost and convenience. The charcoal adsorption collector is considered in this study. Various factors may significantly affect the charcoal adsorption mechanism on its practical application. Moisture effects are discussed here as having major impact on radon collection by charcoal. Set of equations are presented in this report to describe adsorption of radon including moisture effects. (author) 61 refs

128

EXPLORE SIGNIFICANT FACTORS TO AFFECT CUSTOMER INVOLVEMENT  

Directory of Open Access Journals (Sweden)

Full Text Available Although literature review supported the concept that customer loyalty, brand equity and perceived risk are significant factors to affect customer involvement, very limited studies have extensively examined the relationship among those variables. This research applied quantitative study to comprehensively explore the relationship between customer loyalty, brand equity, perceived risk and customer involvement for consumers. The population for this research was identified as consumers having the shopping experience for digital camera. The findings supported the hypothesis that customer loyalty, brand equity and perceived risk have significant and positive relationship to customer involvement. The findings identified the predictors of customer loyalty, brand equity and perceived risk on the customer involvement and generated the recommendations for corporate operations and future scholar studies.

Yu-Jia Hu

2012-01-01

129

Factors Affecting E-Service Satisfaction  

Directory of Open Access Journals (Sweden)

Full Text Available User satisfaction is an important predictor of online consumer behavior and the success of a web-based system. If customers are satisfied with the services received through the online system, it is likely they will keep using the system. To examine factors affecting user satisfaction with e-services, a questionnaire was distributed to a random sample of (615 students out of (5918 at Petra University in Jordan to explore their perceptions. Regression analysis was conducted to test the hypotheses. The results indicated that website design, navigation, and personalization were found to be predictors of e-service satisfaction. The results of this study provide a comprehensive set of implications for practitioners and researchers. This study shows how the website design, navigation, and personalization play a crucial role in the overall evaluation of e-service satisfaction. Management of universities need to be aware that a bad experience with website design, navigation, and personalization can affect satisfaction, if a student has a bad experience regarding interactivity, customization, or website design, then a student might make an overall e-service judgment even before a transaction can take place. If customers believe that an organization’s website is hard to use, poorly designed, and doesn’t take into consideration distinguished services for each user, then customers are likely to move to other organizations’ websites.

Mohammed Mufaddy Al-Kasasbeh

2011-03-01

130

Factors affecting hydrocarbon removal by air stripping  

International Nuclear Information System (INIS)

This paper includes an overview of the theory of air stripping design considerations and the factors affecting stripper performance. Effects of temperature, contaminant characteristics, stripping tower geometry and air/water ratios on removal performance are discussed. The discussion includes treatment of groundwater contaminated with petroleum hydrocarbons and chlorinated solvents such as TCE and PCE. Control of VOC emissions from air strippers has become a major concern in recent years, due to more stringent restrictions on air quality in many areas. This paper includes an overview of available technology to control air emissions (including activated carbon adsorption, catalytic oxidation and steam stripping) and the effects of air emission control on overall efficiency of the treatment process. The paper includes an overview of the relative performance of various packing materials for air strippers and explains the relative advantages and disadvantages of comparative packing materials. Field conditions affecting selection of packing materials are also discussed. Practical guidelines for the design of air stripping systems are presented, as well as actual case studies of full-scale air stripping projects

131

Factors affecting seismic response of submarine slopes  

Directory of Open Access Journals (Sweden)

Full Text Available The response of submerged slopes on the continental shelf to seismic or storm loading has become an important element in the risk assessment for offshore structures and 'local' tsunami hazards worldwide. The geological profile of these slopes typically includes normally consolidated to lightly overconsolidated soft cohesive soils with layer thickness ranging from a few meters to hundreds of meters. The factor of safety obtained from pseudo-static analyses is not always a useful measure for evaluating the slope response, since values less than one do not necessarily imply slope failure with large movements of the soil mass. This paper addresses the relative importance of different factors affecting the response of submerged slopes during seismic loading. The analyses use a dynamic finite element code which includes a constitutive law describing the anisotropic stress-strain-strength behavior of normally consolidated to lightly overconsolidated clays. The model also incorporates anisotropic hardening to describe the effect of different shear strain and stress histories as well as bounding surface principles to provide realistic descriptions of the accumulation of the plastic strains and excess pore pressure during successive loading cycles. The paper presents results from parametric site response analyses on slope geometry and layering, soil material parameters, and input ground motion characteristics. The predicted maximum shear strains, permanent deformations, displacement time histories and maximum excess pore pressure development provide insight of slope performance during a seismic event.

G. Biscontin

2006-01-01

132

Factors affecting excretory behavior of pigs.  

Science.gov (United States)

A 2(4) factorial experiment with six pens per treatment was conducted to examine the factors affecting the excretory behavior of growing-finishing pigs. The factors investigated were partition type (open or closed), pig density (9 or 14 pigs/pen, size: 2 m x 4.5 m), position of nipple drinker in the pen (back wall of the pen or side in front of slatted area), and prior experience of pigs (training or no training). A total of 1,104 pigs at a weight interval of 28.4 +/- .2 to 91.4 +/- .4 kg were used in this study. Pen cleanliness was assessed by a dung scoring system, and growth rate was determined over the growing-finishing period. Partition type, nipple drinker position, or prior training of pigs had no effect on growth rate. Stocking pigs at 14 pigs/pen reduced growth rate (P effect between pen partition and pig density as well as an interaction among pen partition, pig density, and water position (P < .05). PMID:8071169

Hacker, R R; Ogilvie, J R; Morrison, W D; Kains, F

1994-06-01

133

FACTORS AFFECTING PHARMACOKINETIC DISPOSITION OF DRUGS  

Directory of Open Access Journals (Sweden)

Full Text Available Absorption of drugs from the gastrointestinal tract is a complex process the variability of which is influenced by many physicochemical and physiologic factors. The two most important physicochemical factors that affect both the extent and the rate of absorption are lipophilicity and solubility. The rate and extent of absorption are governed by the solubility, permeability and stability of the drug, with solubility being a pH-dependent parameter for weak acids and bases. The gastrointestinal tract can be viewed as discrete sections with a variety of differential local pH environments ranging from the acidic stomach to the more basic small intestine. The multiple peaking, double peaking or secondary peaking phenomena can occur in the disposition of a variety of xenobiotics during drug development (the pre-clinical phase and in subsequent clinical studies and use. The physicochemical and physiological mechanisms underlying the occurrence of this phenomenon are often multi factorial and include but are not limited to solubility-limited absorption, modified-release formulations, complexation, enterohepatic recirculation, gastric emptying and the intestinal transit time, site-specific absorption, gastric secretion-enteral reabsorption. Double peak absorption has been described with several orally administered drugs such as cimetidine furosemide, piroxicam, ranitidine, talinolol, alprazolam and phenazopyridine.

Mehta Hiren R

2011-05-01

134

Research of Factors Affecting Pension Funds Efficiency  

Directory of Open Access Journals (Sweden)

Full Text Available Currently Lithuania has an old-age pension system of three pillars. Unfortunately, when making an investment decision, too few factors are used that affect strategy effectiveness. It is necessary to develop tools to better assess the risks and more accurately simulate the potential long-term investment scenarios. The article deals with the investment strategy to the second and third pillar pension funds in order to maximize investment returns and reduce risks. A smart software tool allows you to simulate an accrual depending on the rate of return, the accumulation period, the level of contributions, the fund’s profitability and other factors. The study shows that using the Social Insurance Fund contributions, personal contributions and the state provided additives can accumulate significantly greater amounts of money than collecting only the second pillar pension funds contributions. For implementation of the proposed methodology it is necessary to ensure a minimum level of personal pension scheme members fundraising to the third pillar pension funds. On the other hand, the study revealed that in some cases investment to private pension funds can be useless. Private pension funds have become popular between unprofessional investors who don’t have sufficient knowledge. Research shows that financial institutions do not always provide the optimal proposals. Advanced software tools can help make better investment decisions. Commercial tools usually show potential profits of investment, but not always pay sufficient  attention to potential risks. This article analyzes both good and bad investment scenarios.

Marius Liutvinavi?ius

2013-08-01

135

Research of Factors Affecting Pension Funds Efficiency  

Directory of Open Access Journals (Sweden)

Full Text Available Currently Lithuania has an old-age pension system of three pillars.Unfortunately, when making an investment decision, too few factors are used that affect strategy effectiveness. It is necessary to develop tools to better assess the risks and more accurately simulate the potential long-term investment scenarios.The article deals with the investment strategy to the second and third pillar pension funds in order to maximize investment returns and reduce risks. A smart software tool allows you to simulate an accrual depending on the rate of return, the accumulation period, the level of contributions, the fund’s profitability and other factors.The study shows that using the Social Insurance Fund contributions, personal contributions and the state provided additives can accumulate significantly greater amounts of money than collecting only the second pillar pension funds contributions. For implementation of the proposed methodology it is necessary to ensure a minimum level of personal pension scheme members fundraising to the third pillar pension funds. On the other hand, the study revealed that in some cases investment to private pension funds can be useless.Private pension funds have become popular between unprofessional investors who don’t have sufficient knowledge. Research shows that financial institutions do not always provide the optimal proposals. Advanced software tools can help make better investment decisions. Commercial tools usually show potential profits of investment, but not always pay sufficient attention to potential risks. This article analyzes both good and bad investment scenarios.

Virgilijus Sakalauskas

2011-12-01

136

Factors that affecting mothers’ postnatal comfort  

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Full Text Available Aim: The comfort is defined as; “an expected result of a complex conformation of providing peace and help about individual’s needs in a physical, psycho-spiritual, social and environmental entity to overcome the problems”. The aim of this study was to determine the mother’s postnatal comfort and the affecting factors of it.Materials and Methods: This is a sectional and descriptive study. The study was performed on the mothers (n=150 who applied to the delivery service of the Ba?kent University Ankara Hospital between the date of 30.07.2008 to 31.12.2008. A questionnaire was developed by the investigators to collect data and determine patients’ postnatal comfort scores. Results: The mean age of women was 26.4±3.5 years, the majority of patients had an educational level of high school (68.7% and were multipara (66.0%. It was determined that the mothers had problems and needed help with the fatigue, pain, in standing up, the adverse effect of anesthesia, personal and perineal hygiene that affect their postnatal comfort. The comfort score of the mothers who had spontaneous vaginal birth was higher than those of underwent cesarean delivery (p<0.05.Conclusion: The mothers’ needs and expectations about themselves and their babies were generally supplied by midwifes and the nurses in the postnatal period. Opinion of the mothers about their comfort were influenced to a positive view and the comfort scores increased while the mothers’ satisfaction were augmented (p<0.05.

Gül P?nar

2009-01-01

137

Factors that affect toilet training in children  

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Full Text Available Objective: To identify age of initiation of toilet training and affecting factors for children. Material and Methods: 861 children were included in this study. "Chi square test", "Mann-Whitney U Test" and "Kruskall-Wallis Variance Analysis" statistical analysis methods have been applied. Ethical permission has been provided by local ethical committee. Results: 861 children under age of five were evaluated in this study (average age was 4±0.9; 433 children were boy (50.3%, 428 children were girl (49.7%. Age of initiation of toilet training was younger than 1 years old for 45 children (5.2%, between 13-18 month for 223 children (25.9%, between 19-24 month for 307 children (35.7%, between 25-30 month for 201 children (23.3% and older than 30 month for 85 children (9.9%. That families who live below hunger threshold and small families initiate toilet training earlier that other families were determined (p=0.001. Children in 19-24 month have shorter duration of toilet training than other groups (p<0.05. That children who live in shanty have longer duration of toilet training than children who live in apartment were determined (p=0,031. That 219 children (25.4% who had faced traumatic experiences which may affect training process, recently have longer duration of toilet training than other children (p=0,008. Duration of the training is shorter for f amilies who did not use toilet training methods than families who used methods. Conclusion: In our study, we found that age of initiation of toilet training is smaller for children who belong to family which has low level of income and small families. Duration of training is the longer for children whose initiation of toilet training was earlier than 18 month and later than 30 month, live in shanty, faced traumatic experiences.

Serdar Önen

2012-01-01

138

Factors affecting radiocaesium transfer to ruminants  

International Nuclear Information System (INIS)

The studies performed in the 2 year CEG/DG XII Radiation Protection Programme described here have tried to identify and quantify some of the most important factors influencing the radiocaesium levels in animal food products. The programme involved 9 laboratories in 6 countries: Belgium, Ireland, Greece, Italy, Sweden and the UK. Scientists from Norway and Germany also participated on an informal basis and are formally involved in a subsequent project. Experimental studies have largely been conducted using sheep, although some comparative studies have been performed with dairy cattle. In parallel to the experimental studies, a number of research models have been developed by participants in Greece and the UK to be interactively used with a number of different aspects in the programme. This presentation gives a short overview and discussion of the main findings of this project. (orig./DG)

139

Does Labour Diversity affect Firm Productivity?  

DEFF Research Database (Denmark)

Using a matched employer-employee dataset, we analyze how workforce diversity in cultural background, education and demographic characteristics affects productivity of firms in Denmark. Implementing a structural estimation of the firms' production function (Ackerberg et al., 2006) we find that labor diversity in education significantly enhances a firm's value added. Conversely, diversity in ethnicity and demographics induces negative effects on firm productivity. Hence, the negative effects, coming from communication and integration costs connected to a more culturally and demographically diverse workforce, seem to outweigh the positive effects coming from creativity and knowledge spillovers.

Parrotta, Pierpaolo; Pozzoli, Dario

2011-01-01

140

Trust Factors Affecting Cooperation in Construction  

DEFF Research Database (Denmark)

With all the advances in professionalism, methods, technology, and human resource training, we should have seen an increase in productivity. However, this has not happened and the construction industry is losing the battle to be competitive and has instead become a high-cost, low-productivity sector. By applying the theory that insufficient cooperation is the result of low trust the aim was to investigate how conditions for formation of positive and lasting trustful relationships can be created. A questionnaire survey including clients, contractors, architects, engineers and client design advisor was carried out. The analysis showed that the ability to be trustful can be developed through the experience of different factors (e.g. control mechanisms, mutual respect, repeated cooperation, shared understanding and communication). Furthermore, the ability to trust other parties depends on knowledge of others' skillsets. Interdisciplinary collaboration through education would limit the formation of negative stereotypes and the overall trust level increases, due to more and better knowledge of other disciplines.

Ditlev Bohnstedt, Kristian; HaugbØlle, Kim

2013-01-01

141

Some Environmental Factors Affecting on Growth Characteristics  

Directory of Open Access Journals (Sweden)

Full Text Available Live weights, weight gains and some body measurements at different ages of Eastern Anatolian Red Cattle (EAR were determined and some environmental factors affecting on these traits were investigated. The effect of dam’s age on the birth weight was highly significant (P<0.01. Although the lowest birth weight was obtained from calves of dams at the 3 years of age, the highest birth weight was obtained from calves given birth by cows at the 5 years of age. The males had heavier live weights and weight gains at different ages than the females. The effect of the sex on the live weights except for 9 and 12 months weights was found as highly significant (P<0.01. Feeding of the calves with different amount of milk had significant (P<0.01 influence on the 3, 6 and 9 months weights as well as weight gains. The effect of the years on the daily weight gains in EAR was also highly significant (P<0.01. The results shows the importance of the environmental effects on the traits studied and revealed that there is need for them to be corrected prior to the improvement studies.

N. Tuzemen

2007-01-01

142

Investigation of biomechanical factors affecting rowing performance.  

Science.gov (United States)

It was hypothesized that a crew's rowing performance was predictable based on their total propulsive power, synchrony (a real-time comparison of rower propulsive force magnitudes) and total drag contribution (a measure of the rowers' effect on shell drag forces during the recovery), quantities calculated from individual rower's force-time profiles and recovery kinematics. A rowing pair was equipped with transducers to gather shell velocity, propulsive blade force, oar angular position and seat displacement. Eight subjects (four port, four starboard) participated in two rounds of data collection. The first round pairings were random, while the second round pairings were assigned based on Round 1 results. Regression analysis and ANCOVA were used to test the validity of assumptions inherent in the predictive model and, if applicable, explore a linear model predicting rowing performance based on total propulsive power, synchrony and total drag contribution. Total propulsive power, synchrony and total drag contribution were correlated and further were affected by pairing, violating assumptions inherent in the linear model. The original hypothesis was not supported based on these violations. Important findings include (1) performance cannot be predicted using the simple linear model proposed, (2) rowers' force-time profiles are repeatable between trials, with some but not all rowers adapting their force-time profile dependent on their pair partner, presumably in an effort to increase the level of synchrony between the two, and (3) subtle biomechanical factors may play a critical role in performance. PMID:15165867

Baudouin, Alexandre; Hawkins, David

2004-07-01

143

Factors Affecting Career Progress of MBA Students  

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Full Text Available This paper explored the factors that affect career progress of students in the MBA program of the University of the Philippines.To understand career progression, four measures of career progress were used in this study, namely: number of promotions, number of years in between promotions, total cash compensation, and number of administrative levels from the company president. On the other hand, the factors used to explain career progess included human capital, organizational, interpersonal and demographic variables.The results showed that the different measures of career progress had distinct determinants implying different dynamics. It appeared that measures of career progress that are sensitive to the value employers attach to the individual (Whitely, Dougherty, & Dreher, 1991 such as total compensation, total number of promotion and years per promotion were related with human capital factors such as work experience and number of companies worked for. On the other hand, measures that relate to centrality if the position, in which market forces have less impact, were associated with organizational variables such as organization size and the demographic variable gender.While gender did not explain variation in total compensation, number of promotions and number of uears between promotions, these null results are important for two reasons. First, it implies that the female MBA students were at par with their male counterparts as fas as these measures of career progress are concerned. Second, it challenges the generalizability of the finding of gender segregation at the organizational level-where men receive significantly higher wages that women-which is a common finding among studies done in the United States. The results using the MBA students as sample show that income and promotion parity may indeed be achievable and this brings hope to women in general.However, the statistical significance of gender in explaining career progress as centrality of position does not augur well for women. This result implies that despite the fact that the women in the sample were intelligent (that is, they passed the stringent MBA screening, motivated and obviously were able to manage their time well-being able to balance work, school and in some cases, family responsibilities-they were still far removed from the top. These women still faced some hostile environment that prevented them from fully contributing to making decisions that matter.

Vivien T. Supangco

2001-06-01

144

Factors affecting growth and pigmentation of Penicillium caseifulvum  

DEFF Research Database (Denmark)

Color formation, metabolite production and growth of Penicillium caseifulvum were studied in order to elucidate factors contributing to. yellow discoloration of Blue Cheese caused by the mold. A screening experiment was set up to study the effect of pH, concentration of salt (NaCl), P, K, N, S, Mg and the trace metals Fe, Cu, Zn, Mn on yellow color formation, metabolite production and mold growth. Multivariate statistical analysis showed that the most important factor affecting yellow color formation was pH. The most pronounced formation of yellow color, supported by highest amount of colored metabolites, appeared at low pH (pH 4). Mold growth was not correlated to the yellow color formation. Salt concentration was the most important factor affecting mold growth and length of lag phase. Production of secondary metabolites was strongly influenced by both pH and salt concentration. The screening results were used to divide the metabolites into the following three groups: 1) correlated to growth, 2) correlated to color formation, and 3) formed at high pH. Subsequently, a full factorial experiment with factors P, Mg and Cu, showed that low P concentrations (2000 mg/kg) induced yellow color formation. Among the factors contributing to yellow color formation, pH and salt concentration are easy to control for the cheesemaker, while the third factor, P-concentration, is not. Naturally occurring variations in the P-concentration in milk delivered to Blue Cheese plants, could be responsible for the yellow discoloration phenomenon observed in the dairy industry.

Suhr, Karin Isabel; Haasum, I.

2002-01-01

145

Factors Affecting Ejection Risk in Rollover Crashes  

Science.gov (United States)

Ejection greatly increases the risk of injury and fatality in a rollover crash. The purpose of this study was to determine the crash, vehicle, and occupant characteristics that affect the risk of ejection in rollovers. Information from real world rollover crashes occurring from 2000 – 2010 was obtained from the National Automotive Sampling System (NASS) in order to analyze the effect of the following parameters on ejection risk: seatbelt use, rollover severity, vehicle type, seating position, roof crush, side curtain airbag deployment, glazing type, and occupant age, gender, and size. Seatbelt use was found to reduce the risk of partial ejection and virtually eliminate the risk of complete ejection. For belted occupants, the risk of partial ejection risk was significantly increased in rollover crashes involving more roof inversions, light trucks and vans (LTVs), and larger occupants. For unbelted occupants, the risk of complete ejection was significantly increased in rollover crashes involving more roof inversions, LTVs, far side occupants, and higher levels of roof crush. Roof crush was not a significant predictor of ejection after normalizing for rollover severity. Curtain airbag deployment was associated with reduced rates of partial and complete ejection, but the effect was not statistically significant, perhaps due to the small sample size (n = 89 raw cases with curtain deployments). A much greater proportion of occupants who were ejected in spite of curtain airbag deployment passed through the sunroof and other portals as opposed to the adjacent side window compared to occupants who were ejected in rollovers without a curtain airbag deployment. The primary factors that reduce ejection risk in rollover crashes are, in generally decreasing order of importance: seatbelt use, fewer roof inversions, passenger car body type, curtain airbag deployment, near side seating position, and small occupant size. PMID:23169130

Funk, James R.; Cormier, Joseph M.; Bain, Charles E.; Wirth, Jeffrey L.; Bonugli, Enrique B.; Watson, Richard A.

2012-01-01

146

External factors affecting investment decisions of companies  

OpenAIRE

In this paper, we attempt to investigate the importance of certain external factors on the investment decisions made by Polish companies. With the use of data from the tailor-made Survey on Receivables, we (1) examine factors influencing investment decisions of companies in Poland; (2) assess the relation between branch, company size and investment factors; (3) evaluate the importance of the investment factors; and (4) determine the relative influence of these factors on the company-level inv...

Bialowolski, Piotr; Weziak-bialowolska, Dorota

2014-01-01

147

Factors Affecting Transfer of Training in Thailand  

Science.gov (United States)

To begin the validation process for the Learning Transfer System Inventory (LTSI) in Thailand, research replicating Holton, Bates, and Ruona's study (2000) was conducted in Thailand. The LTSI was administered to 1,029 employees. Exploratory factor analysis and MANOVA were used to identify factors. A factor structure almost identical to that of…

Yamnill, Siriporn; McLean, Gary N.

2005-01-01

148

Some factors affecting the abundance of mycorrhizas in grassland  

International Nuclear Information System (INIS)

Nearly one quarter of the world's land surface is occupied by permanent grassland, and possible ways of increasing the productivity of grassland deserve attention. Since permanent grasslands rarely receive phosphorus fertilizer, mycorrhizas could be important. Research in Britain has shown that mycorrhizal abundance is related to grazing intensity and to the percentage of ground area covered by vegetation. Infection levels in a plant are also influenced by what other species are growing nearby. Knowledge of factors affecting mycorrhizal abundance could allow grasslands to be managed for greater abundance of indigenous mycorrhizas. (author)

149

Factors Affecting Degradation of Aldicarb and Ethoprop  

OpenAIRE

Chemical and microbial degradation of the nematicides-insecticides aldicarb and ethoprop has been studied extensively in both laboratory and field studies. These studies show that temperature is the most important variable affecting the degradation rate of aldicarb and its carbamate metabolites in surface soils. Temperature and organic matter appear to be the most important variables affecting degradation rates of ethoprop in soils under normal agricultural conditions, with organic matter bei...

Jones, Russell L.; Norris, Frank A.

1998-01-01

150

How do organizational factors affect compliance?  

OpenAIRE

This thesis qualitatively covers how and why leadership, competence, responsibility and contractors influence compliance with procedures, and whether or not there are other factors that may potentially influence these organizational factors and the relationship between them.The theoretical approach in this thesis is based on an MTO perspective in regards to assessing factors that may influence leadership, competence, responsibility, contractors and compliance. Compliance with procedures is re...

Skaugrud, Ida

2011-01-01

151

On the factors affecting product distribution in laccase-catalyzed oxidation of a lignin model compound vanillyl alcohol: experimental and computational evaluation.  

Science.gov (United States)

Laccases (EC 1.10.3.2) are multicopper oxidases, which can oxidize phenolic substrates by the concomitant reduction of oxygen to water. The phenolic substructures of lignin are also oxidized by laccases, resulting mainly in various polymerized products. Several model compound studies indicate that variations in the reaction media, such as the pH and the enzyme dosage used, have an impact on the observed product distribution of laccase promoted oxidation, but no detailed study has been reported to explain these results. In the present study, a monomeric lignin model compound, vanillyl alcohol, was oxidized in laccase-catalyzed reactions by varying the pH, enzyme dosage and temperature. The energies of all the observed products and potential intermediates were calculated by applying density functional theory (DFT) and the polarizable continuum solvation model (PCM). The observed predominant product at pH 4.5 to 7.5 was clearly the 5-5' dimer, although the thermodynamic product according to the calculated free energies was vanillin, the difference being 5.6 kcal mol(-1). The hydrogen bonding is shown to give an additional stabilizing effect on the transition state leading to the 5-5' dimer, but also a kinetic barrier reduces the formation of vanillin. Based on the calculated pKa-values of the proposed intermediates we suggest that the rearomatization reactions of the quinones formed in the radical reactions under mildly acidic and neutral conditions would preferentially occur through deprotonation rather than through protonation. PMID:23851662

Lahtinen, Maarit; Heinonen, Petri; Oivanen, Mikko; Karhunen, Pirkko; Kruus, Kristiina; Sipilä, Jussi

2013-09-01

152

Factors Affecting Turkish Students' Achievement in Mathematics  

Science.gov (United States)

Following past researches, student background, learning strategies, self-related cognitions in mathematics and school climate variables were important for achievement. The purpose of this study was to identify a number of factors that represent the relationship among sets of interrelated variables using principal component factor analysis and…

Demir, Ibrahim; Kilic, Serpil; Depren, Ozer

2009-01-01

153

How Student Satisfaction Factors Affect Perceived Learning  

Science.gov (United States)

Data from students in two sections of a general education course offered at a research university in spring 2009 were used to explore whether student satisfaction factors are associated with perceived learning as rated by students. A list of 22 elements in the learning environment was explored. The 22 were used in creating 3 satisfaction factors

Lo, Celia C.

2010-01-01

154

Service-Oriented Factors Affecting the Adoption of Smartphones  

Directory of Open Access Journals (Sweden)

Full Text Available This research investigates the adoption factors of smartphones focusing on the differences of smartphone and feature phone users. We used Technology Acceptance Model (TAM which incorporates service-oriented and device-oriented functional attributes as exogenous variables for a product-service system such as smartphones. In addition, Decision Tree (DT and customer surveys were conducted. As a study results, we found that the service-oriented functional attributes - ‘wireless internet’ and ‘mobile applications’ - affect the adoption of smartphones regardless of users. However, the DT results revealed that the more important factor is 'mobile applications' to smartphone users but 'wireless internet' for feature phone users. In conclusion, we discovered that a strategy emphasis on the service-oriented attributes is needed for the adoption of smartphones.

Youngmo Kang

2014-06-01

155

Service-Oriented Factors Affecting the Adoption of Smartphones  

Scientific Electronic Library Online (English)

Full Text Available This research investigates the adoption factors of smartphones focusing on the differences of smartphone and feature phone users. We used Technology Acceptance Model (TAM) which incorporates service-oriented and device-oriented functional attributes as exogenous variables for a product-service syste [...] m such as smartphones. In addition, Decision Tree (DT) and customer surveys were conducted. As a study results, we found that the service-oriented functional attributes - 'wireless internet' and 'mobile applications' - affect the adoption of smartphones regardless of users. However, the DT results revealed that the more important factor is 'mobile applications' to smartphone users but 'wireless internet' for feature phone users. In conclusion, we discovered that a strategy emphasis on the service-oriented attributes is needed for the adoption of smartphones.

Youngmo, Kang; Mingook, Lee; Sungjoo, Lee.

2014-07-01

156

Some Factors Affecting the Production of Carotenoids by <i>Rhodotorula glutinis</i> var. <i>glutinis</i>  

OpenAIRE

A new yeast strain isolated from pin cushion flower (Scabiosa atropurpura) in our laboratory was selected from 200 yeast isolates as carotenoids producer and identified as Rhodotorula glutinis var. glutinis. The selected isolate was grown in synthetic medium to study the effect of carbon to nitrogen ratio, sources of nitrogen and carbon, mineral salts and incubation temperature on carotenoids production. The results indicated the following optimal conditions: carbon to nitrogen ratio of 5, am...

El-banna, Amr A.; Abd El-razek, Amal M.; El-mahdy, Ahmed R.

2012-01-01

157

Environmental factors affect efficacy of some essential oils and resveratrol to control growth and ochratoxin A production by Penicillium verrucosum and Aspergillus westerdijkiae on wheat grain.  

OpenAIRE

This study determined the efficacy of three essential oils (bay, clove and cinnamon oil) and the antioxidant resveratrol (0–500 ?g g?1) on the control of growth and ochratoxin A (OTA) production by Penicillium verrucosum and Aspergillus westerdijkiae (=A. ochraceus) under different water activity (aw, 0.90, 0.95, 0.995), and temperature (15, 25 °C) conditions on irradiated wheat grain. The most effective treatment (resveratrol) was then tested on natural grain. The ED50 values for growt...

Aldred, David; Cairns-fuller, Victoria; Magan, Naresh

2008-01-01

158

Factors affecting socket fixation after cemented revision  

OpenAIRE

Factors influencing the radiographic outcome of revised cemented sockets have been investigated in 360 cases; 70 with radiological signs of failure were analysed. The acetabular bone stock at revision and preparation of the acetabular floor were the two factors which had a significant influence on the outcome. The thickness of the cement mantle around the socket also had an influence. Young patients were at a higher risk of failure. The use of a flanged socket and an a...

Raut, V. V.; Kay, P.; Siney, P. D.; Wroblewski, B. M.

1997-01-01

159

Factors affecting the design of instrument flight procedures  

OpenAIRE

The article highlights factors, which might affect the design of instrument flight procedures. Ishikawa diagram is used to distribute individual factors into classes, as are People, Methods, Regulations, Tools, Data and Environment.

Ferencz, Ivan; Ju?n, Frantis?ek; Kevicky?, Dus?an

2008-01-01

160

Factors affecting the design of instrument flight procedures  

Directory of Open Access Journals (Sweden)

Full Text Available The article highlights factors, which might affect the design of instrument flight procedures. Ishikawa diagram is used to distribute individual factors into classes, as are People, Methods, Regulations, Tools, Data and Environment.

Ivan FERENCZ

2008-01-01

161

Examining Factors Affecting Classroom Attendance and Performance  

OpenAIRE

Abstract: This study examined the relationship between four class attitudinal variables and how it affects class attendance and performance. A questionnaire was administered to 134 undergraduate students at medium sized college in Taiwan. The data included questions about the participant’s rating of the level of difficulty of the course (Difficulty), the topics covered in the course (Topics), their motivation towards attending the course (Motivation), and whether or not t...

Peter Tze-Ming Chou; Ya-Hui Kuo

2012-01-01

162

Factors affecting alum-protein interactions.  

Science.gov (United States)

Alum (or aluminum-containing) adjuvants are key components of many vaccines currently on the market. The immuno-potentiation effect of alum adjuvants is presumably due to their interaction with antigens, leading to adsorption on the alum particle surface. Understanding the mechanism of antigen adsorption/desorption and its influencing factors could provide guidance on formulation design and ensure proper in-vivo immuno-potentiation effect. In this paper, surface adsorption of several model proteins on two types of aluminum adjuvants (Alhydrogel(®) and Adjuphos(®)) are investigated to understand the underlying adsorption mechanisms, capacities, and potential influencing factors. It was found that electrostatic interactions are the major driving force for surface adsorption of all the model proteins except ovalbumin. Alhydrogel has a significantly higher adsorption capacity than Adjuphos. Several factors significantly change the adsorption capacity of both Alhydrogel and Adjuphos, including molecular weight of protein antigens, sodium chloride, phosphate buffer, denaturing agents, and size of aluminum particles. These important factors need to be carefully considered in the design of an effective protein antigen-based vaccine. PMID:24607202

Huang, Min; Wang, Wei

2014-05-15

163

Econometrics Analysis on Factors Affecting Student Achievement  

Directory of Open Access Journals (Sweden)

Full Text Available Purpose: This study aims to identify school-level variables that influence academic outcomes, and to determine the extent of their influence. Using state-level panel data, this study estimates a simple achievement function to explore the nexus between three identified factors (percentage of students eligible for reduced/free lunch program, school enrolment and per-pupil expenditure and student achievement (percentage of satisfactory of 4th grade math and read in the United States. Method: Based on literature reference and rational hypotheses, the effects of the percentage of student eligible for reduced or free lunch, school enrolment and per-pupil expenditure on the percentage of 4th grade student satisfactory in math and read were tested for a certain group of students separately. Ordinary Least Squares regression model was used to determine the validity and strength of each relationship. Result: The data set consisted of 1823 observations located in different districts. Final test result shows that: 1       Significant negative effect on student achievement is found under the factor of percentage of students eligible for reduced or free lunch. 2       Slight negative effect on student achievement is found under the factor of school enrollment. 3       Slight positive effect on student achievement is found under the factor of per-pupil expenditure. Students in school with lower percentage of students eligible for reduced or free lunch program, lower enrolment record, and more per-pupil expenditure will have better academic performance.

Yueyi Sun

2014-10-01

164

Does Labor Diversity Affect Firm Productivity?  

DEFF Research Database (Denmark)

Using an employer-employee dataset, we analyze how diversity in cultural background, skills and demographic characteristics a?ects total factor productivity (TFP) of ?rms in Denmark. Implementing structural estimation of ?rms' production function, we ?nd evidence that labor diversity in skills/education signi?cantly enhances ?rm performance as measured by ?rm TFP. Conversely, diversity in demographics and ethnicity brings mixed results - both dimensions of workforce diversity have either no or negative e?ects on ?rm TFP. Hence, it seems as if the negative e?ects, coming from communication and integration costs connected to a more demographically and culturally diverse workforce, counteract the positive e?ects of diversity on ?rm TFP, coming from creativity and knowledge spillovers. However, we ?nd that ethnic diversity is valuable for ?rms operating in industries characterized by above-average trade openness, giving support to the hypothesis that an ethnically diverse workforce provides information and accessto global markets.

Parrotta, Pierpaolo; Pozzoli, Dario

2010-01-01

165

Environmental factors affecting rates of nitrogen cycling  

International Nuclear Information System (INIS)

The nitrogen cycle in the eutrophic Delaware river was studied in late summer, 1983 using 15N tracer additions of NHG4+, NO2-, and NO3-. Rates for nine different transformations were calculated simultaneously with a least-squares minimization analysis. Light was found to stimulate ammonium uptake and to inhibit ammonium oxidation. Rates for nitrification, ammonium uptake by phytoplankton, and photosynthesis were integrated over 24 hours and river depth. High turbidity lifted the effect of light inhibition on nitrification and restricted phytoplankton uptake. Uptake of ammonium contributed over 95% of the inorganic nitrogen ration for phytoplankton, with dark uptake accounting for more than 50%. A mass-conservation, box model of river was used to calculate rate constants required to reproduce observed nutrient concentration changes. The calculated constants correlated well with the measured 15N and oxygen integrated rates. Water-column nitrification was the major loss term for NH4+, while water column regeneration was the primary source. Loss of oxidized nitrogen was insignificant. Oxygen consumption and air-water exchange far exceeded net photosynthetic oxygen production. Nitrification contributed less than 1% to the oxygen demand near Philadelphia but up to 25% further downstream. Production of NO and N2O was measured under varying oxygen concentraas measured under varying oxygen concentrations in batch cultures of the nitrifying bacteria Nitrosomonas europaea and Nitrosococcus oceanus. Production of both gases increased relative to nitrite production as oxygen levels decreased

166

Key factors affecting on bio-hydrogen production from co-digestion of organic fraction of municipal solid waste and kitchen wastewater.  

Science.gov (United States)

The effects of sludge residence time (SRT) and dilution ratio (DR) on the continuous H2 production (HP) from co-digestion of organic fraction of municipal solid waste (OFMSW) and kitchen wastewater (KWW) via mesophilic anaerobic baffled reactor (ABR) was investigated. Increasing DR from 1:2 to 1:3 significantly (P<0.1) increased the H2 yield (HY) from 116.5±76 to 142.5±54 ml H2/g CODremoved d, respectively. However, at a DR of 1:4, the HY was dropped to 114.5±65 ml H2/g CODremoved d. Likewise, HY increased from 83±37 to 95±24 ml H2/g CODremoved d, when SRT increased from 3.6 to 4.0 d. Further increase in HY of 148±42 ml H2/g CODremoved d, was occurred at a SRT of 5.6d. Moreover, hydrogen fermentation facilitated carbohydrate, lipids, protein and volatile solids removal efficiencies of 87±5.8%, 74.3±9.12%, 76.4±11.3% and 84.8±4.1%, respectively. PMID:24656489

Tawfik, Ahmed; El-Qelish, Mohamed

2014-09-01

167

Fatherhood across Two Generations: Factors Affecting Early Family Roles  

Science.gov (United States)

This article examines the determinants of men's early parental roles, distinguishing factors that affect being a father versus being childless, and factors that affect being a resident versus a nonresident father, in the context of having a partner or not. We also consider whether these patterns have changed between 1985 and 2004. The data come…

Goldscheider, Frances; Hofferth, Sandra; Spearin, Carrie; Curtin, Sally

2009-01-01

168

The Direct and Indirect Factors on Affecting Organizational Sustainability  

OpenAIRE

Successful firms pursue organizational sustainability. The aim of this study is to explore the direct and indirect factors affecting on organizational sustainability. Indirect factors being those that first influence competitive advantage, and then affecting organizational sustainability. This study analyzes 145 articles retrieved from the SDOL (Science Driect Online) database that were published between 2009 and January 2013. Papers were retrieved using ‘organizational sustainability’ an...

Meng-Shan Tsai; Meng-Chen Tsai; Chi-Cheng Chang

2013-01-01

169

SOME FACTORS AFFECTING UNDERGRADUATE ACADEMIC ACHIEVEMENT.  

Science.gov (United States)

A related series of studies, most of which have been published previously, is described. These studies form a coherent whole and demonstrate the development of a theme, namely, the identification of factors in the student and the medical school which, in their interaction, influenced undergraduate academic performance at one medical school. In the population concerned no reliable positive or negative correlation could be demonstrated between cognitive ability and academic performance, when the former was measured by the Wechsler Adult Intelligence Scale and the Medical College Admission Test, and the latter by the current assessment methods of the medical school. Other factors, including socioeconomic and individual personality variables, are at present under investigation as to their effect on academic achievement. It is emphasized that the results of these studies cannot be regarded as valid for all medical schools, but the methods employed can be generalized. PMID:14278025

HUNTER, R C

1965-04-01

170

Systematic factors that affect ostrich egg incubation traits  

Scientific Electronic Library Online (English)

Full Text Available Data obtained from a pair-mated ostrich flock maintained at Oudtshoorn, South Africa, were used to estimate environmental and genetic parameters for egg weight (EWT), water loss of incubated eggs up to 21 days (WL21), water loss up to 35 days (WL35), pipping time (PT) and weight of day-old chicks (C [...] WT). Between 13806 and 19913 artificially incubated ostrich eggs during the 2003 to 2006 production years were used. Systematic factors affecting these traits such as production year, breeding season, female age, incubator type, storage time and ostrich breed, were initially assessed in single-trait-analyses, using ASREML. Eggs and chicks produced by Zimbabwean Blue (ZB) females were 5 and 7% heavier, respectively, than those produced by South African Black (SAB) females. WL21 and WL35 were not significantly different between ZB and SAB birds. There were trends for within-season effects on EWT and CWT, but no general, robust trend applicable to all years could be discerned. Season had a significant effect on WL21, WL35 and PT. An increase was apparent in EWT, CWT and PT with an increase in female age. There was a linear increase in pipping time as egg storage time prior to incubation increased. Incubator type had an effect on WL21 and WL35. Systematic factors affect traits such as WL21, WL35 and PT and should be accounted for before the estimation of genetic parameters. These factors should be considered when planning commercial ostrich husbandry and artificial incubation operations.

Z., Brand; S.W.P., Cloete; C.R., Brown; I.A., Malecki.

2008-04-01

171

Factors Affecting The Retention Of Knowledge Workers  

OpenAIRE

One of the characteristics of knowledge workers is their high level of mobility. The cost of labour turnover of these key resources is high in both financial and non financial terms. There is thus a need to understand what the factors are that underpin the retention cognitions of knowledge workers. Data was collected from 306 knowledge workers in full time employment representing a wide range of demographic groupings. The results showed that job satisfaction and organisational commitment do n...

Wilhelm Jordaan; Margie Sutherland

2004-01-01

172

Econometrics Analysis on Factors Affecting Student Achievement  

OpenAIRE

Purpose: This study aims to identify school-level variables that influence academic outcomes, and to determine the extent of their influence. Using state-level panel data, this study estimates a simple achievement function to explore the nexus between three identified factors (percentage of students eligible for reduced/free lunch program, school enrolment and per-pupil expenditure) and student achievement (percentage of satisfactory of 4th grade math and read) in the United States. Method: B...

Yueyi Sun

2014-01-01

173

Dietary factors that affect carotenoid bioavailability  

OpenAIRE

Carotenoids are thought to contribute to the beneficial effects of increased vegetable consumption. To better understand the potential benefits of carotenoids, we investigated the bioavailability of carotenoids from vegetables and dietary factors which might influence carotenoid bioavailability.In a four weeks intervention trial, we found that the increases in plasma concentrations of?-carotene and lutein after consumption of a high vegetable diet were 14% and 67%, respectively, of those aft...

Hof, K.

1999-01-01

174

Factors affecting levodopa effects in Parkinson's disease.  

OpenAIRE

Levodopa is the gold standard for the treatment of Parkinson's disease (PD) because of its outstanding clinical efficacy. However, the majority of patients experience various adverse reactions, including the wearing-off phenomenon, the on-off phenomenon, dyskinesia and psychiatric symptoms. The response to levodopa depends not only on the intrinsic responsiveness of the patients, but also on various other important factors including the type of levodopa preparation, its absorption/metabolism,...

Ogawa N

2000-01-01

175

Risk factors that affect recurrence in strokes  

Directory of Open Access Journals (Sweden)

Full Text Available Introduction: Recurrent stroke is defined as a new cerebrovascular event which occurs after the stabilization of the previous stroke. Recurrence of stroke increases likelihood of disability-mortality associated with stroke. Systematic evaluation of stroke cases can help to reduce the risk of recurrence. Objective: In order to predict strokes which carry the risk of recurrence, we aimed to compare data related to risk factors, stroke type, etiology and disability-mortality rates associated with stroke. Material And Method: Patients with stroke who referred to Bak?rkoy Neurological and Psychiatric Diseases Training and Research State Hospital between June 1, 2002 and February 28, 2003 were recorded into the stroke database in a consecutive and prospective manner. Strokes were classified as ischemic/hemorrhagic and first/recurrent. For recurrent strokes, information about previous strokes was also recorded. Risk factors were classified as hypertension (HT, diabetes mellitus (DM, hyperlipidemia, atrial fibrillation (AF, coronary artery disease (CAD, migraine, transient ischemic accident (TIA, family history of cerebrovascular accident (CVA, oral contraceptive use, PAD, congestive heart failure (CHF, other heart diseases, smoking cigarette and alcohol consumption. Disability-mortality rates associated with stroke were evaluated. All data were compared for first and recurrent strokes. Results: In our study, 631 patients were evaluated, 52.3% of whom were female and 47.7% male. Frequency of stroke was statistically high (p<0.001 in females over 70 years old. Recurrent strokes were of the same type. For the first and recurrent strokes, HT was the highest risk factor. AF frequency increased with age (p<0.001. The rate of disability-mortality was found high in strokes of undetermined and cardioembolic origin. Conclusion: Knowledge of etiologic group can help to predict recurrence of stroke and prevent death. We think that effective treatment of modifiable risk factors identified in stroke groups where recurrence is the highest, and prioritising the investigation of cardioembolic risk factors in elderly women are significant in terms of primary and secondary stroke prevention.

Sevim Bayba?

2010-01-01

176

Factors affecting fin damage of farmed rainbow trout  

Directory of Open Access Journals (Sweden)

Full Text Available The aims of this study were to determine the influence of the factors affecting fin damage under different rainbow trout production systems and to compare the findings with the known experimental reports. The study was based on a questionnaire that included information about the main factors i.e. oxygen level in exit water, water temperature, stocking density, daily feed ration, number of meals and grading frequency on seven rainbow trout farms. Standard multiple regression analysis, based on a previously published fi n damage dataset, was used to assess the relationship between the level of fin damage per fin and the factors. Daily feed ration received the strongest weight in the model for the caudal, anal and both pectoral fins, whereas number of meals received the strongest weight in the model for both pelvic fins. Grading frequency received the strongest weight only in the dorsal fin model. Lower levels of daily feed ration and number of meals combined with higher water temperature increased the level of fin damage, whereas stocking density had no effect. The results conform to the experimental research on fin damage in rainbow trout. The research model contributes to the overall assessment of fish welfare and the regression analysis used in this study could be used on rainbow trout farms to evaluate the effect of the main factors on the level of fin damage.

Aleksandar Cvetkovikj

2015-03-01

177

Study of Factors Affecting Mental Health  

OpenAIRE

The aim of this study is to investigate the simple and multiple relationships between role ambiguity, role conflict, role overload and mental health considering the moderating role of type A personality and sense of coherence. To this end correlation and regression analysis is utilized. Research sample includes 196 personnel working in Ahvaz Pipe-production factory during year 2007. Research results revealed that there is a significant relation between role ambiguity and mental health deficie...

Abdul-Kazem Naisi; Ali Moazami-Goodarzi; Maryam Zarra-Nezhad

2009-01-01

178

Do landscape factors affect brownfield carabid assemblages?  

International Nuclear Information System (INIS)

The carabid fauna of 28 derelict sites in the West Midlands (England) were sampled over the course of one growing season (April-October, 1999). The study aimed to investigate the relationship between carabid assemblages and five measures of landscape structure pertinent to derelict habitat. At each site measurements of landscape features pertinent to derelict habitat were made: (i) the proximity of habitat corridors; (ii) the density of surrounding derelict land; (iii) the distance between the site and the rural fringe; and (iv) the size of the site. Concurrent surveys of the soil characteristics, vegetation type, and land use history were conducted. The data were analysed using a combination of ordination (DCA, RDA), variance partitioning (using pRDA) and binary linear regression. The results suggest that:1.There is very little evidence that the carabid assemblages of derelict sites were affected by landscape structure, with assemblages instead being principally related to within-site habitat variables, such as site age (since last disturbance), substrate type and vegetation community. 2.No evidence was found to support the hypothesis that sites away from railway corridors are more impoverished in their carabid fauna than sites on corridors. 3.There are some suggestions from this study that rarer and non-flying specialist species may be affected by isolation, taking longer to reach sites. We infer from this that older sites with retarded succession, and sites in highith retarded succession, and sites in higher densities of surrounding derelict land may eventually become more species rich and that these sites may be important for maintaining populations of rarer and flightless species. 4.Conservation efforts to maintain populations of these species should focus principally on habitat quality issues, such as maintaining early successional habitats that have a diversity of seed producing annuals and perennial plants and enhancing substrate variability rather than landscape issues

179

Examining Factors Affecting Classroom Attendance and Performance  

Directory of Open Access Journals (Sweden)

Full Text Available

Abstract: This study examined the relationship between four class attitudinal variables and how it affects class attendance and performance. A questionnaire was administered to 134 undergraduate students at medium sized college in Taiwan. The data included questions about the participant’s rating of the level of difficulty of the course (Difficulty, the topics covered in the course (Topics, their motivation towards attending the course (Motivation, and whether or not the participants felt that the course is practical and useful to their future (Practicality. The results of the Pearson correlation coefficients showed that 4 out of the 15 correlations were statistically significant. The negative correlation found between motivation and topics; and practicality and topics suggest the attitude that when choosing courses, students tend to choose courses that they think would easy to pass. The finding that none of the variables were significantly correlated to course attendance and course performance suggests that the strongest predictor of success of a course is based on the student’s level of attendance. This lead to the discussion in the conclusion about pedagogical implications for what teachers can do in their classrooms.

Peter Tze-Ming Chou

2012-02-01

180

Factors affecting membership in specialty nursing organizations.  

Science.gov (United States)

A discouraging trend in many specialty nursing organizations is the stagnant or declining membership. The research committee of the Southeast Texas Chapter of the Association of Rehabilitation Nurses (ARN) collected data and studied this trend to determine what changes would be necessary to increase membership. Using Herzberg's motivational theory as a framework, a review of the literature was initiated. There were few current studies on this issue, but relevant information was found about nursing's emerging workforce, as well as implications of the growth of magnet hospitals, which affect whether nurses join specialty nursing organizations. A multifaceted data-collection approach using convenience samples was designed. First, relevant literature was reviewed. Second, a survey was sent by e-mail to other ARN chapters. Third, a telephone survey on other specialty organizations in the geographic region was completed. Finally, members of the local ARN chapter and four other specialty organizations, as well staff nurses in the geographic area, were given questionnaires to complete. Descriptive statistics and cross tabulations were used to determine why nurses do and do not join specialty organizations (N = 81). The most frequent reasons for joining an organization were to increase knowledge, benefit professionally, network, and earn continuing education units. Reasons for choosing not to participate were family responsibilities, lack of information about these organizations, and lack of time. Ways to reverse the decline in membership are discussed. PMID:15222095

White, Mary Joe; Olson, Rhonda S

2004-01-01

181

Treatment Compliance Affecting Factors in Hypertension  

Directory of Open Access Journals (Sweden)

Full Text Available Hypertension is to be responsible for death which accounts for 6% of adult deaths all over the world. It is the third ranks among causes of death. These ranks are similar both in developed and developing countries. Hypertension has important role causes of death. But, hypertension can be prevented to great extent. On the other hand, a lot of countries in the world hypertension control rates are reported to be inadequate in sample communities representing the general society and in patients treated under health service conditions. Patient no adherence to treatment is one of the significant factors in failing to raise blood pressure (BP control over 25% around the world and in our country. No adherence reason of hypertension treatment was examined in this review article. [TAF Prev Med Bull 2009; 8(2.000: 167-172

Rabia Hacihasanoglu

2009-04-01

182

Study of Factors Affecting Mental Health  

Directory of Open Access Journals (Sweden)

Full Text Available The aim of this study is to investigate the simple and multiple relationships between role ambiguity, role conflict, role overload and mental health considering the moderating role of type A personality and sense of coherence. To this end correlation and regression analysis is utilized. Research sample includes 196 personnel working in Ahvaz Pipe-production factory during year 2007. Research results revealed that there is a significant relation between role ambiguity and mental health deficiency, but no one was found between role conflict and role overload and mental health deficiency; nevertheless, higher correlation level between role stressors and mental Health deficiency in low-level sense of coherence in comparison with high-level sense of coherence personnel was found. Also, a higher multiple correlations between role stressors and MH deficiency in personnel having further type A personality in comparison with personnel having not as much of mentioned group’s type A personality was observed.

Abdul-Kazem Naisi

2009-01-01

183

Factors affecting filamentous growth of Sphaerotilus natans.  

Science.gov (United States)

Filamentous growth in cultures of Sphaerotilus natans can be measured and compared with total growth by a standardized procedure of winding filaments around an inoculating needle. Filaments and residual growth are then separately washed on Millipore filters, dried, and weighed. This method has been used to study changes in the growth habit of S. natans elicited by changes in the concentration of nutrients in the medium. The concentration of peptone, in a medium containing a sugar, phosphate buffer, and inorganic salts, has a much greater effect on the proportion of filamentous growth than does the nature or concentration of the carbon source or the concentration of phosphate buffer. Filament formation is significantly inhibited by concentrations of peptone greater than 0.25%; further increases in peptone concentration stimulate the production of large amounts of capsular material. Increasing the concentration of phosphate buffer to 0.05 M almost completely inhibits growth of S. natans. PMID:13897283

GAUDY, E; WOLFE, R S

1961-11-01

184

Factors affecting the soil sorption of iodine  

International Nuclear Information System (INIS)

Iodine-129 is an important radionuclide released from nuclear facilities because of its long radioactive half-life and its environmental mobility. Its retention in surface soils has been linked to pH, organic matter, and Fe and Al oxides. Its inorganic solution chemistry indicates I will most likely exist as an anion. Three investigations were carded out to provide information on the role of the inorganic and organic chemistry during sorption of I by soil. Anion competition using C1- showed that anion exchange plays a role in I sorption in both mineral and organic soils. The presence of Cl decreased the loss of I- from solution by 30 and 50% for an organic and a carbonated sandy soil respectively. The I remaining in solution was associated primarily with dissolved organic carbon (DOC). The loss rate from solution appears to depend on two reactions of I with the soil solids (both mineral and organic) creating both a release to and a loss from solution, and the reaction of I with the DOC (from very low to high molecular weight). Composition analyses of the pore water and the geochemical modelling indicate that I sorption affects the double-charged anion species in solution the most, particularly SO4--. Iodide introduced to natural bog groundwater at three concentrations (l0-3, 10-1 and 10 meq L-1) remained as I- and was not lost from solution quickly, indicating that the association quickly, indicating that the association of I with DOC is slow and does not depend on the DOC or I concentration. If sorption of I to soil solids or DOC is not sensitive to concentration, then stable I studies, which by necessity must be carried out at high environmental concentrations, can be linearly extrapolated to radioactive I at much lower molar concentrations. (author)

185

FACTORS AFFECTED DECARBOXYLATION ACTIVITY OF ENTEROCOCCUS FAECIUM ISOLATED FROM RABBIT  

Directory of Open Access Journals (Sweden)

Full Text Available Normal 0 21 false false false SK JA X-NONE Biogenic amines (BA are basic nitrogenous compounds formed mainly by decarboxylation of amino acids. There are generated in course of microbial, vegetable and animal metabolisms. The aim of the study was to monitor factors affected production of biogenic amines by Enterococcus faecium, which is found in rabbit meat. Biogenic amines were analyzed by means of UPLC (ultrahigh performance liquid chromatography equipped with a UV/VIS DAD detector. Decarboxylation activity of E. faecium was mainly influenced by the cultivation temperature and the amount of NaCl in this study. E. faecium produced most of the monitored biogenic amines levels: tyramine ?2500 mg.l-1; putrescine ?30 mg.l-1; spermidine ?10 mg.l-1 and cadaverine ?5 mg.l-1.doi:10.5219/182

František Bu?ka

2012-04-01

186

Factors Affecting Patient Satisfaction During Endoscopic Procedures  

International Nuclear Information System (INIS)

Objective: To assess the quality and patient satisfaction in Endoscopy Unit of Shifa International Hospital. Study Design: Cross-sectional survey. Place and Duration of Study: Division of Gastroenterology, Shifa International Hospital, Islamabad, Pakistan, from July 2011 to January 2012. Methodology: Quality and patient satisfaction after the endoscopic procedure was assessed using a modified GHAA-9 questionnaire. Data was analyzed using SPSS version 16. Results: A total of 1028 patients were included with a mean age of 45 A+- 14.21 years. Out of all the procedures, 670 (65.17%) were gastroscopies, 181 (17.60%) were flexible sigmoidoscopies and 177 (17.21%) were colonoscopies. The maximum unsatisfactory responses were on the waiting time before the procedure (13.13 %), followed by unsatisfactory explanation of the procedure and answers to questions (7.58%). Overall, unsatisfied impression was 4.86%. The problem rate was 6.22%. Conclusion: The quality of procedures and level of satisfaction of patients undergoing a gastroscopy or colonoscopy was generally good. The factors that influence the satisfaction of these patients are related to communication between doctor and patient, doctor's manner and waiting time for the procedure. Feedback information in an endoscopy unit may be useful in improving standards, including the performance of endoscopists. (author)

187

[The psychological factors affecting athletic performance].  

Science.gov (United States)

The physical and mental health complex is claimed as achievement of the XXI. century, whereby also among the sportsmen and sportswomen, beside the somatic medicine, growing attention is devoted to the psyche as well. The sports psychiatry was dragged in and put into service to enhance performance after all biological weapons run out of ammunition, and the long-awaited results still failed to come about. Moreover, despite the energy increasingly invested it was going from bad to worse. Among athletes many psychiatric disorders call attention, either by the high prevalence or by the development of a specific syndrome. Symptoms of depression (depression after the competition, depression following the failure at the competition), chronic stress, anxiety, fatigue syndrome of overtraining, enervation, sleep disturbances, eating problems, burnout, eating disorders (anorexia athletics, athlete triad), personality factors and the chemical addiction are all extremely important. The present study is the first to summarize the most crucial psychiatric disorders that may have great significance in the athlete population, in varying degrees according to the individual sports. PMID:20442052

Resch, Mária

2010-05-16

188

Factors affecting the development of food allergy.  

Science.gov (United States)

Food allergy is an important health issue. The estimated prevalence among adults in Western Europe is thought to be between 1 and 2%, with the frequency in infants being greater (approximately 5%). Most confirmed food allergies are associated with a relatively limited range of produce, including cow's milk, eggs, tree nuts, peanuts, wheat, fish and shellfish, although the prevalence of allergy to individual foods is known to vary geographically, due largely to differences in dietary practices. Although formal evidence is lacking, it is assumed that (in line with other forms of atopic disease) the incidence of food allergy is increasing. There is no doubt that genetic predisposition is an important determinant. However, acquisition of sensitisation to food proteins and subsequent allergic disease is known to be influenced by a variety of environmental factors and the timing, duration and extent of exposure. Moreover, the nature of the allergen itself may have an important impact on the severity and persistence of clinical disease. The purpose here is to discuss the relevance of some of these variables in the context of immunoglobulin E antibody-mediated allergic responses. PMID:12691172

Kimber, Ian; Dearman, Rebecca J

2002-11-01

189

Factors that affect the in vitro production of bovine embryos: A review Factores que afectan la producción in vitro de embriones bovinos: una revisión Fatores que afetam a produção in vitro de embriões bovinos: A revisão  

Directory of Open Access Journals (Sweden)

Full Text Available In vitro embryo production (IVP represents a way to increase gamete use from animals with high zootechnical value. In spite of the advances obtained in IVP over the last few years, production of transferable embryos is still low. The aim of this review is to discuss ways to produce in vitro embryos, as well as oocytes formation and maturation processes that can be related to the effectiveness of obtained results. Some studies show the influence of follicular growth factors, gonadotropins, steroids and other hormones on the follicular development and the quality of the cumulus oocyte complex (COC. The follicular phase of slow growth is critical for the development of the oocyte capacity to reach the final competence and diameter. Information about endocrine influences, or likewise, the dependence of growth of small antral follicles when a loss in the oocyte or follicle functionality occurs is scarce in the literature. A variable number of different techniques and protocols for treatment of oocytes donors are described with the aim of improve the results, the COCs recovering rate and the developmental competence in vitro of collected oocytes. From the considerations presented in this review, it is possible to verify the importance of better understanding the factors involved in the IVP process, with the aim of allow new alternatives to increase the results obtained in programs of animal assisted reproduction.La producción in vitro de embriones (PIV representa una manera de aumentar el uso de gametos de animales con alto valor zootécnico. A pesar de los avances obtenidos en PIV en los últimos años, la producción de embriones tranferibles sigue siendo baja. El objetivo de esta revisión es discutir maneras de producir embriones in vitro, así como los procesos de formación y de maduración de los oocitos que se pueden relacionar con la eficacia de los resultados obtenidos. Algunos estudios demuestran la influencia de los factores foliculares del crecimiento, gonadotrofinas, esteroides y otras hormonas en el desarrollo folicular y la calidad del complejo del cumulus oocito (CCO. La fase folicular del crecimiento lento es crítica para el desarrollo de la capacidad del oocito de alcanzar la capacidad y el diámetro final. Información sobre influencias endocrinas, o además, la dependencia del crecimiento de pequeños folículos antrales cuando ocurre una pérdida en la funcionalidad del oocito o del folículo, es escasa en la literatura. Un número variable de diversas técnicas y los protocolos para el tratamiento de oocitos de las donantes son descritos en esta revisión, con lo objetivo de mejorar los resultados, el índice de la recuperacion de CCOs y la capacidad de desarrollo in vitro de oocitos recogidos. De las consideraciones presentadas en esta revisión, es posible verificar la importancia de entender los factores implicados en el proceso de PIV, para permitir el desarrollo de nuevas alternativas que mejoren los resultados obtenidos en programas de la reproducción animal asistida.A produção in vitro (PIV de embriões representa uma maneira de incrementar o uso de gametas de animais de alto valor zootécnico. Apesar dos avanços obtidos na PIV nos últimos anos, a produção de embriões transferíveis ainda é baixa. O objetivo desta revisão é discutir maneiras de produzir embriões in vitro, assim como o processo de formação e maturação de oócitos, que pode estar relacionado a eficácia dos resultados obtidos. Aguns estudos demonstram a influência de fatores de crescimento, gonadotrofinas, esteróides e outros hormônios no desenvolvimento folicular e na qualidade do complexo cumulus oócito (CCO. A fase folicular de crescimento lento é critica para o desenvolvimento da capacidade do oócito de atingir a competência e o diâmetro finais. Informação sobre as influências endócrinas, ou seja, da dependência do crescimento de pequenos folículos antrais quando ocorre perda da funcionalidade do oócito ou folículo são escassas na literatura. Um número variável de diferent

Luiz F M Pfeifer

2008-03-01

190

Factors affecting performance of vitrified wasteforms  

International Nuclear Information System (INIS)

The acceptability and usefulness of mathematical models for predicting the performance of vitrified wasteforms can be enhanced by their validation using laboratory data generated under controlled conditions and other relevant information and data. The laboratory experiments used for validation should accurately represent the repository conditions, or the test conditions should lend themselves to being transformed to repository-relevant environmental regimes from which conclusions regarding long-term performance of the wasteform can be drawn. The majority of the literature reported experimental data were generated for the primary purposes of optimizing wasteforms composition, rank-ordering of classes of wasteforms (e.g., vitrified, ceramic, cermet, etc.) based on their aqueous corrosion/leaching properties, developing standardized testing procedures (mainly aqueous leaching for assuring product consistency), and enhancing the general understanding of the properties of wasteforms. A detailed review of the literature shows the lack of certain types of experimental data. In some areas, the experimental data are currently unavailable, while in other areas they are scarce. Such areas require additional focused experimental effort. The paper identifies and discusses these areas

191

Factors that affect the in vitro production of bovine embryos: A review / Fatores que afetam a produção in vitro de embriões bovinos: A revisão / Factores que afectan la producción in vitro de embriones bovinos: una revisión  

Scientific Electronic Library Online (English)

Full Text Available A produção in vitro (PIV) de embriões representa uma maneira de incrementar o uso de gametas de animais de alto valor zootécnico. Apesar dos avanços obtidos na PIV nos últimos anos, a produção de embriões transferíveis ainda é baixa. O objetivo desta revisão é discutir maneiras de produzir embriões [...] in vitro, assim como o processo de formação e maturação de oócitos, que pode estar relacionado a eficácia dos resultados obtidos. Aguns estudos demonstram a influência de fatores de crescimento, gonadotrofinas, esteróides e outros hormônios no desenvolvimento folicular e na qualidade do complexo cumulus oócito (CCO). A fase folicular de crescimento lento é critica para o desenvolvimento da capacidade do oócito de atingir a competência e o diâmetro finais. Informação sobre as influências endócrinas, ou seja, da dependência do crescimento de pequenos folículos antrais quando ocorre perda da funcionalidade do oócito ou folículo são escassas na literatura. Um número variável de diferentes técnicas e protocolos para o tratamento de doadoras de ovóctios são descritos com o objetivo de melhorar os resultados, a taxa de recuperação de CCOs e o desenvolvimento da competência in vitro dos oócitos coletados. Das considerações apresentadas nesta revisão é possível verificar a importância do conhecimento dos fatores envolvidos no processo de PIV, com o objetivo de possibilitar que novas alternativas incrementem os resultados obtidos em programas de reprodução animal assistida. Abstract in spanish La producción in vitro de embriones (PIV) representa una manera de aumentar el uso de gametos de animales con alto valor zootécnico. A pesar de los avances obtenidos en PIV en los últimos años, la producción de embriones tranferibles sigue siendo baja. El objetivo de esta revisión es discutir manera [...] s de producir embriones in vitro, así como los procesos de formación y de maduración de los oocitos que se pueden relacionar con la eficacia de los resultados obtenidos. Algunos estudios demuestran la influencia de los factores foliculares del crecimiento, gonadotrofinas, esteroides y otras hormonas en el desarrollo folicular y la calidad del complejo del cumulus oocito (CCO). La fase folicular del crecimiento lento es crítica para el desarrollo de la capacidad del oocito de alcanzar la capacidad y el diámetro final. Información sobre influencias endocrinas, o además, la dependencia del crecimiento de pequeños folículos antrales cuando ocurre una pérdida en la funcionalidad del oocito o del folículo, es escasa en la literatura. Un número variable de diversas técnicas y los protocolos para el tratamiento de oocitos de las donantes son descritos en esta revisión, con lo objetivo de mejorar los resultados, el índice de la recuperacion de CCOs y la capacidad de desarrollo in vitro de oocitos recogidos. De las consideraciones presentadas en esta revisión, es posible verificar la importancia de entender los factores implicados en el proceso de PIV, para permitir el desarrollo de nuevas alternativas que mejoren los resultados obtenidos en programas de la reproducción animal asistida. Abstract in english In vitro embryo production (IVP) represents a way to increase gamete use from animals with high zootechnical value. In spite of the advances obtained in IVP over the last few years, production of transferable embryos is still low. The aim of this review is to discuss ways to produce in vitro embryos [...] , as well as oocytes formation and maturation processes that can be related to the effectiveness of obtained results. Some studies show the influence of follicular growth factors, gonadotropins, steroids and other hormones on the follicular development and the quality of the cumulus oocyte complex (COC). The follicular phase of slow growth is critical for the development of the oocyte capacity to reach the final competence and diameter. Information about endocrine influences, or likewise, the dependence of growth of small antral follicles when a loss i

Luiz F, M Pfeifer; Augusto, Schneider; Marcio N, Corrêa.

2008-03-01

192

Factors affecting the Turnaround Time for Manufacturing, Testing and Release of Cellular Therapy Products prepared at Multiple Sites in support of Multicenter Cardiovascular Regenerative Medicine Protocols – a Cardiovascular Cell Therapy Research Network (CCTRN) Study  

Science.gov (United States)

BACKGROUND Cellular therapy studies are often conducted at multiple clinical sites in order to accrue larger patient numbers. In many cases this necessitates use of localized Good Manufacturing Practices (GMP) facilities to supply the cells. To assure consistent quality, oversight by a quality assurance group is advisable. In this study we report the findings of such a group established as part of the Cardiovascular Cell Therapy Research Network (CCTRN) studies involving use of autologous bone marrow mononuclear cells (ABMMC) to treat myocardial infarction and heart failure. STUDY DESIGN Factors affecting cell manufacturing time were studied in 269 patients enrolled on 3 CCTRN protocols using Sepax-separated ABMMC. The cells were prepared at 5 GMP cell processing facilities and delivered to local treatment sites or more distant satellite Centers. RESULTS Although the Sepax procedure takes only 90 minutes, the total time for processing was approximately seven hours. Contributing to this were incoming testing and device preparation, release testing, patient randomization and product delivery. The average out-of body-time (OBT), which was to be OBT. CONCLUSION We conclude that rapid cell enrichment procedures may give a false impression of the time actually required to prepare a cellular therapy product for release and administration. Institutional procedures also differ and can contribute to delays; however, in aggregate it is possible to achieve an overall manufacturing and testing time that is similar at multiple facilities. PMID:22320233

Richman, Sara; Gee, Adrian P.; McKenna, David; Traverse, Jay; Henry, Timothy; Fisk, Diann; Pepine, Carl; Bloom, Jeannette; Willerson, James; Prater, Karen; Zhao, David; Koç, Jane Reese; Anwaruddian, Saif; Taylor, Doris; Cogle, Christopher; Moyé, Lemuel; Simari, Robert; Skarlatos, Sonia

2011-01-01

193

The Direct and Indirect Factors on Affecting Organizational Sustainability  

Directory of Open Access Journals (Sweden)

Full Text Available Successful firms pursue organizational sustainability. The aim of this study is to explore the direct and indirect factors affecting on organizational sustainability. Indirect factors being those that first influence competitive advantage, and then affecting organizational sustainability. This study analyzes 145 articles retrieved from the SDOL (Science Driect Online database that were published between 2009 and January 2013. Papers were retrieved using ‘organizational sustainability’ and ‘competitive advantage’ as keywords, searching on ‘Abstract, Title, Keywords’, and subject headings of ‘Business, Management and Accounting’. The results identify that 13 indirect factors and 3 direct factors can have an impact on organizational sustainability.

Meng-Shan Tsai

2013-11-01

194

Kjell J. Nilssen; Factors affecting energy expenditure in reindeer  

Directory of Open Access Journals (Sweden)

Full Text Available The thesis Factors affecting energy expenditure in reindeer by Kjell J. Nilssen was approved for the Phil, dr's degree at the University of Tromsø. The dissertation took place in Tromsø December 15.1984.

Sven Skjenneberg (ed.

1984-05-01

195

FACTORS AFFECTING INTENT TO PURCHASE VIRTUAL GOODS IN ONLINE GAMES  

OpenAIRE

Online games increasingly sell virtual goods to generate real income. As a result, it isincreasingly important to identify factors and theory of consumption values that affect intent topurchase virtual goods in online games. However, very little research has been devoted to thetopic. This study is an empirical investigation of the factors and theory of consumption valuesthat affect intent to purchase virtual goods in online games. The study determines the effects ofgame type, satisfaction wit...

Cheng-Hsun Ho; Ting-Yun Wu

2012-01-01

196

Factors Affecting Wedding Banquet Venue Selection of Thai Wedding Couples  

OpenAIRE

The wedding day is one of the most important days for couples, so they want their ceremony to be as near to perfect as possible. Finding a venue for the wedding banquet is the first stage of the couple’s planning and many factors affect this decision. The objective of this research was to study the factors that affect the selection of wedding banquet venues among Thai wedding couples. This study obtained data via questionnaires and used statistical tests such ...

Kulkanya Napompech

2014-01-01

197

Factors affecting retention of early pregnancy in dairy cattle.  

Science.gov (United States)

Potential factors affecting retention of pregnancy during weeks 5-9 of gestation were studied in dairy cows and heifers (N = 211) on two farms. Cows were examined by ultrasonography for presence of a viable embryo, and sizes of the corpus luteum (CL) and of follicles > or = 5mm were recorded. Blood samples were taken at each examination and assayed for progesterone and estradiol. Overall pregnancy loss was 11.4%. Cows with two CL did not have greater concentrations of progesterone than cows with one CL and they retained fewer pregnancies (P < 0.01; 73% versus 91%). Pregnancy retention was associated positively with concentrations of progesterone and estradiol during week 5 (P < 0.05). Embryos that were lost apparently died before CL regression. Retention of pregnancy declined in cows with high body condition and as age of the cow increased. Pregnancy retention was lower in cows bred to one of four frequently-used service sires (P < 0.05). Days postpartum, milk production, parity, service number, inseminator, synchronization of estrus, diameter of follicles and size of CL did not affect pregnancy retention. In conclusion, retention of pregnancy during placentation varied with concentrations of progesterone and estradiol, age of cow, body condition and service sire. PMID:15302385

Starbuck, Melanie J; Dailey, Robert A; Inskeep, E Keith

2004-08-01

198

Factors Affecting Brand Identification and Loyalty in Online Community  

OpenAIRE

This study explores the factors of online community characteristics which affect customer loyalty through the mediate effects of brand identification. By employing online questionnaire survey, hundreds of observations were collected from online brand communities in Taiwan for hypothetical model test. Research results show that brand loyalty is positively affected by stronger online brand identification which is enhanced by online community interactivity, satisfied custo...

Chieh-Min Chou

2013-01-01

199

Age as an Affective Factor in Second Language Acquisition  

Science.gov (United States)

This paper examines the relationship of age factor to second language acquisition. Age as an affective factor brings about different performance stages in second as well as first language learning. Traditionally, research in Critical Period Hypothesis and other variables has derived two major aspects of language learning--the younger = the better…

Bista, Krishna K.

2008-01-01

200

Exploring Factors that Affect Purchase Intention of Athletic Team Merchandise  

Science.gov (United States)

The purpose of this study was to test a structural model to determine which psychosocial constructs affected the purchase intention of athletic team merchandise (ATM). Results from the analyses indicated that the twelve-factor ATM model fit the data from collegiate athletic events well, explaining the various impact factors that lead to purchase…

Lee, Donghun; Trail, Galen T.; Lee, Cindy; Schoenstedt, Linda J.

2013-01-01

201

Factors affecting attendance at population-based mammography screening  

OpenAIRE

The aim of the studies described in this thesis was to explore factors affecting attendance at outreach mammography screening, and to assess possible associations between socioeconomic factors and breast cancer survival. The relation of non-attendance at mammography screening to sociodemographic factors, indicators of general health behavior, self-rated health, experience of cancer in others, and own cancer or breast problems was studied in a case-control study with 434 ...

Lagerlund, Magdalena

2002-01-01

202

Web-based Factors Affecting Online Purchasing Behaviour  

Science.gov (United States)

The growing use of internet and online purchasing among young consumers in Malaysia provides a huge prospect in e-commerce market, specifically for B2C segment. In this market, if E-marketers know the web-based factors affecting online buyers' behaviour, and the effect of these factors on behaviour of online consumers, then they can develop their marketing strategies to convert potential customers into active one, while retaining existing online customers. Review of previous studies related to the online purchasing behaviour in B2C market has point out that the conceptualization and empirical validation of the online purchasing behaviour of Information and Communication Technology (ICT) literate users, or ICT professional, in Malaysia has not been clearly addressed. This paper focuses on (i) web-based factors which online buyers (ICT professional) keep in mind while shopping online; and (ii) the effect of web-based factors on online purchasing behaviour. Based on the extensive literature review, a conceptual framework of 24 items of five factors was constructed to determine web-based factors affecting online purchasing behaviour of ICT professional. Analysis of data was performed based on the 310 questionnaires, which were collected using a stratified random sampling method, from ICT undergraduate students in a public university in Malaysia. The Exploratory factor analysis performed showed that five factors affecting online purchase behaviour are Information Quality, Fulfilment/Reliability/Customer Service, Website Design, Quick and Details, and Privacy/Security. The result of Multiple Regression Analysis indicated that Information Quality, Quick and Details, and Privacy/Security affect positively online purchase behaviour. The results provide a usable model for measuring web-based factors affecting buyers' online purchase behaviour in B2C market, as well as for online shopping companies to focus on the factors that will increase customers' online purchase.

Ariff, Mohd Shoki Md; Sze Yan, Ng; Zakuan, Norhayati; Zaidi Bahari, Ahamad; Jusoh, Ahmad

2013-06-01

203

Web-based Factors Affecting Online Purchasing Behaviour  

International Nuclear Information System (INIS)

The growing use of internet and online purchasing among young consumers in Malaysia provides a huge prospect in e-commerce market, specifically for B2C segment. In this market, if E-marketers know the web-based factors affecting online buyers' behaviour, and the effect of these factors on behaviour of online consumers, then they can develop their marketing strategies to convert potential customers into active one, while retaining existing online customers. Review of previous studies related to the online purchasing behaviour in B2C market has point out that the conceptualization and empirical validation of the online purchasing behaviour of Information and Communication Technology (ICT) literate users, or ICT professional, in Malaysia has not been clearly addressed. This paper focuses on (i) web-based factors which online buyers (ICT professional) keep in mind while shopping online; and (ii) the effect of web-based factors on online purchasing behaviour. Based on the extensive literature review, a conceptual framework of 24 items of five factors was constructed to determine web-based factors affecting online purchasing behaviour of ICT professional. Analysis of data was performed based on the 310 questionnaires, which were collected using a stratified random sampling method, from ICT undergraduate students in a public university in Malaysia. The Exploratory factor analysis performed showed that five factors affecting online purchase behaviour are Information Quality, rchase behaviour are Information Quality, Fulfilment/Reliability/Customer Service, Website Design, Quick and Details, and Privacy/Security. The result of Multiple Regression Analysis indicated that Information Quality, Quick and Details, and Privacy/Security affect positively online purchase behaviour. The results provide a usable model for measuring web-based factors affecting buyers' online purchase behaviour in B2C market, as well as for online shopping companies to focus on the factors that will increase customers' online purchase.

204

Environmental Factors Affecting Performance Traits of Sahiwal Cattle in Pakistan  

Directory of Open Access Journals (Sweden)

Full Text Available Data on 23925 lactations of 5897 Sahiwal cows in five Government herds of Punjab (Pakistan viz. Livestock Experiment Station (LES Allahdad, LES Bahadurnagar, LES Fazalpur, LES Jahangirabad and LES Khizerabad (1964-2004 were collected to document the behavior of various productive and reproductive traits of Sahiwal cows with respect to herd, year and season of calving and parity. A linear model was used to determine the effects of various environmental factors on performance traits. The 305-day milk yield, total milk yield, lactation length, dry period, calving interval and service period averaged 1530.5±12.36 kg, 1552.1±12.15 kg, 235±1.4 days, 218±2.1 days, 438±2.7 days and 151±2.8 days, respectively. All the productive and reproductive traits were affected (P<0.01 by herd, year, season of calving and parity. Lactation length was important covariable for yield traits while yield was important for dry period, service period and calving interval. Maximum yield was recorded for 5th parity cows. Calving interval differed by two months among herds. Cows calving in most frequent calving season (winter produced more milk than summer calvers (1608.6±12.91 kg vs 1474.1±13.63 kg. The phenotypic trends for 305-day milk yield, total milk yield, lactation length, dry period, calving interval and service period were -1.33 kg, -0.21 kg, -1.27 days, +1.52 days, +0.32 days and +0.59 days, respectively. Lactation length (244.5 days was used as covariable. Improvement in feeding and breeding management and culling on productivity may improve the performance of Sahiwal cows.

Z. Rehman*§ and M. S. Khan

2012-05-01

205

Ranking factors affecting emissions of GHG from incubated agricultural soils  

Science.gov (United States)

Agriculture significantly contributes to global greenhouse gas (GHG) emissions and there is a need to develop effective mitigation strategies. The efficacy of methods to reduce GHG fluxes from agricultural soils can be affected by a range of interacting management and environmental factors. Uniquely, we used the Taguchi experimental design methodology to rank the relative importance of six factors known to affect the emission of GHG from soil: nitrate (NO3?) addition, carbon quality (labile and non-labile C), soil temperature, water-filled pore space (WFPS) and extent of soil compaction. Grassland soil was incubated in jars where selected factors, considered at two or three amounts within the experimental range, were combined in an orthogonal array to determine the importance and interactions between factors with a L16 design, comprising 16 experimental units. Within this L16 design, 216 combinations of the full factorial experimental design were represented. Headspace nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2) concentrations were measured and used to calculate fluxes. Results found for the relative influence of factors (WFPS and NO3? addition were the main factors affecting N2O fluxes, whilst glucose, NO3? and soil temperature were the main factors affecting CO2 and CH4 fluxes) were consistent with those already well documented. Interactions between factors were also studied and results showed that factors with little individual influence became more influential in combination. The proposed methodology offers new possibilities for GHG researchers to study interactions between influential factors and address the optimized sets of conditions to reduce GHG emissions in agro-ecosystems, while reducing the number of experimental units required compared with conventional experimental procedures that adjust one variable at a time. PMID:25177207

García-Marco, S; Ravella, S R; Chadwick, D; Vallejo, A; Gregory, A S; Cárdenas, L M

2014-01-01

206

Factores nutricionales que influyen sobre las variables productivas y el desarrollo del tracto gastrointestinal en pollitas comerciales rubias = Nutritional factors affecting productive performance and gastrointestinal tract traits in commercial brown-egg laying pullets  

OpenAIRE

El objetivo general de esta Tesis doctoral fue estudiar la influencia de diversos factores nutricionales sobre los parámetros productivos y el desarrollo del tracto digestivo de pollitas rubias destinadas a la producción de huevos comerciales. Para alcanzar este objetivo se realizaron tres experimentos donde se estudió el cereal principal, el tamaño de partícula del cereal y el nivel de energía y la presentación de los piensos. En el experimento 1 se estudió la influencia del ce...

Frikha, Mohamed

2013-01-01

207

Factors affecting birth weight in sheep: maternal environment  

OpenAIRE

Knowledge of factors affecting variation in birth weight is especially important given the relationship of birth weight to neonatal and adult health. The present study utilises two large contemporary datasets in sheep of differing breeds to explore factors that influence weight at term. For dataset one (Study 1; n = 154 Blue-faced Leicester×Swaledale (Mule) and 87 Welsh Mountain ewes, 315 separate cases of birth weight), lamb birth weight as the outcome measure was related to maternal charac...

Gardner, D. S.; Buttery, P. J.; Daniel, Z.; Symonds, M. E.

2007-01-01

208

Crucial Factors Affecting Stress: A Study among Undergraduates in Pakistan  

OpenAIRE

Stress is normally unavoidable part of everyone’s life living in this world. It portrays a negative notion that can have an impact on one’s mental and physical well-being. The core intention of this study was to detect the most influencing factors of stress affecting undergraduates. The four factors that had taken under consideration were Family stress, Emotional stress, Financial Stress and Social Stress. To accomplish this research stress inventory has developed using scientific methods...

Kashif Ud Din Khan; Shazia Gulzar; Farzan Yahya

2013-01-01

209

Single-tooth replacement: factors affecting different prosthetic treatment modalities  

OpenAIRE

Abstract Background The choice between several treatment options for replacing a single missing tooth is influenced by clinical, dentist- and patient-immanent factors. This study aimed to determine the patient factors that would affect the treatment decision to replace a single missing tooth and to assess the satisfaction with several options. Method 200 volunteers involved (121 females and 79 males) divided into four groups, Group A: consisted of patients with conventional fixed partial dent...

Al-Quran Firas A; Al-Ghalayini Raed F; Al-Zu'bi Bashar N

2011-01-01

210

Folate, Hormones and Infertility : Different factors affecting IVF pregnancy outcome  

OpenAIRE

Various hormones have been studied as regards prediction of pregnancy outcome after infertility treatment, but no ideal candidate has been found. Folate and genetic variations in folate metabolism have also been associated with infertility, but it remains unclear how these factors affect IVF pregnancy outcome. It is known that infertility is associated with active folic acid supplement use, but the effect of socioeconomic and lifestyle factors on folic acid supplement use in infertile women h...

Murto, Tiina

2014-01-01

211

Factors Affecting Students' Grades in Principles of Economics  

Science.gov (United States)

Factors affecting students' grades in principles of microeconomics and macroeconomics students are analyzed from the data collected in two public universities. Results indicate that gender, number of hours worked, SAT scores, number of missed classes, recommending the course to a friend, instructors, being a junior, number of economics…

Kara, Orhan; Bagheri, Fathollah; Tolin, Thomas

2009-01-01

212

Factors Affecting Performance in an Introductory Sociology Course  

Science.gov (United States)

This study examines factors affecting students' performances in an Introductory Sociology course over five semesters. Employing simple and ordered logit regression models, the author explains final grades by focusing on individual demographic and educational characteristics that students bring into the classroom. The results show that a student's…

Kwenda, Maxwell

2011-01-01

213

Factors Affecting Educational Innovation with in Class Electronic Response Systems  

Science.gov (United States)

This paper reports the use of Rogers' diffusion of innovation perspective to understand the factors affecting educational innovation decisions, specifically in regard to in class electronic response systems. Despite decreasing costs and four decades of research showing strong student support, academic adoption is limited. Using data collected from…

Freeman, Mark; Bell, Amani; Comerton-Forde, Carole; Pickering, Joanne; Blayney, Paul

2007-01-01

214

Factors Affecting Recruitment into Child and Adolescent Psychiatry Training  

Science.gov (United States)

Objective: The authors studied the factors affecting the recruitment into child and adolescent psychiatry training in the United States. Methods: Medical students (n = 154) and general and child and adolescent psychiatry residents (n = 111) completed a questionnaire to evaluate career choice in child psychiatry (n = 265). Results: Compared with…

Shaw, Jon A.; Lewis, John E.; Katyal, Shalini

2010-01-01

215

Newly Diagnosed with High Blood Pressure? 3 Factors Affect Prognosis  

Science.gov (United States)

... this page, please enable JavaScript. Newly Diagnosed With High Blood Pressure? 3 Factors Affect Prognosis Systolic reading of 150 ... February 5, 2015 Related MedlinePlus Pages Heart Attack High Blood Pressure Stroke THURSDAY, Feb. 5, 2015 (HealthDay News) -- Prompt ...

216

Exploring the Factors that Affect Reading Comprehension of EAP Learners  

Science.gov (United States)

As far as academic reading comprehension is concerned, a network of linguistic skills and strategies operate in a complex and integrated matter. Since it is impossible to examine all the factors affecting reading comprehension all at once, it is more reasonable to compare and contrast the predictive effects of specific variables against each other…

Nergis, Aysegul

2013-01-01

217

Factors Affecting Role Stress and Burnout among School Counselors  

Science.gov (United States)

The purpose of this study is to determine factors affecting role stress and burnout among practicing school counselors as measured by the Maslach Burnout Inventory-Educators Survey (MBI-ES) and the Role Conflict and Ambiguity Scale. The MBI-ES utilizes three subscales to measure burnout: emotional exhaustion, depersonalization, and personal…

Willingham, Wendy Elizabeth

2009-01-01

218

Teaching the Factors Affecting Resistance Using Pencil Leads  

Science.gov (United States)

The aim of this paper is to provide a way of teaching the factors that affect resistance using mechanical pencil leads and the brightness of the light given out by a light bulb connected to an electrical circuit. The resistance of a conductor is directly proportional to its length (L) and inversely proportional to its cross-sectional area (A).…

Küçüközer, Asuman

2015-01-01

219

Institutional and Managerial Factors Affecting International Student Recruitment Management  

Science.gov (United States)

Purpose: The purpose of this paper is to investigate international student recruitment from an institutional perspective and to consider institutional factors that may affect recruitment. Design/methodology/approach: A qualitative study is undertaken in which education marketing practitioners are interviewed regarding aspects of international…

Ross, Mitchell; Heaney, Joo-Gim; Cooper, Maxine

2007-01-01

220

Factors affecting use of fission foils as dosimetry sensors  

Energy Technology Data Exchange (ETDEWEB)

Fission foils are commonly used as dosimetry sensors. They play a very important role in neutron spectrum determinations. This paper provides a combination of experimental measurements and calculations to quantify the importance and synergy of several factors that affect the fission response of a dosimeter. Only when these effects are properly treated can fission dosimeters be used with sufficient fidelity.

Griffin, P.J.; Vehar, D.W.; Kelly, J.G.; Holm, C.V.

1996-12-31

221

Factors Affecting Teen Involvement in Pennsylvania 4-H Programming  

Science.gov (United States)

The study reported here determined the factors that affect teen involvement in 4-H programming. The design of the study was descriptive and correlational in nature. Using a purposive sampling procedure, a survey questionnaire was distributed to all (N=214) 4-H members attending the 4-H State Leadership Conference. The major findings of the study…

Gill, Bart E.; Ewing, John C.; Bruce, Jacklyn A.

2010-01-01

222

Factors affecting use of fission foils as dosimetry sensors  

International Nuclear Information System (INIS)

Fission foils are commonly used as dosimetry sensors. They play a very important role in neutron spectrum determinations. This paper provides a combination of experimental measurements and calculations to quantify the importance and synergy of several factors that affect the fission response of a dosimeter. Only when these effects are properly treated can fission dosimeters be used with sufficient fidelity

223

5?Azacytidine inhibits human rhabdomyosarcoma cell growth by downregulating insulin?like growth factor 2 expression and reactivating the H19 gene product miR?675, which negatively affects insulin?like growth factors and insulin signaling.  

Science.gov (United States)

Insulin?like growth factor 2 (IGF2) and 1 (IGF1) and insulin (INS) promote proliferation of rhabdomyosarcoma (RMS) cells by interacting with the insulin?like growth factor 1 receptor (IGF1R) and the insulin receptor (INSR). Loss of imprinting (LOI) by DNA hypermethylation at the differentially methylated region (DMR) for the IGF2?H19 locus is commonly observed in RMS cells and results in an increase in the expression of proliferation?promoting IGF2 and downregulation of proliferation?inhibiting non?coding H19 miRNAs. One of these miRNAs, miR?675, has been reported in murine cells to be a negative regulator of IGF1R expression. To better address the role of IGF2 and 1, as well as INS signaling in the pathogenesis of RMS and the involvement of LOI at the IGF2?H19 locus, we employed the DNA demethylating agent 5?azacytidine (AzaC). We observed that AzaC?mediated demethylation of the DMR at the IGF2?H19 locus resulted in downregulation of IGF2 and an increase in the expression of H19. This epigenetic change resulted in a decrease in RMS proliferation due to downregulation of IGF2 and, IGF1R expression in an miR?675?dependent manner. Interestingly, we observed that miR?675 not only inhibited the expression of IGF1R in a similar manner in human and murine cells, but we also observed its negative effect on the expression of the INSR. These results confirm the crucial role of LOI at the IGF2?H19 DMR in the pathogenesis of RMS and are relevant to the development of new treatment strategies. PMID:25707431

Tarnowski, Maciej; Tkacz, Marta; Czerewaty, Micha?; Poniewierska-Baran, Agata; Grymu?a, Katarzyna; Ratajczak, Mariusz Z

2015-05-01

224

Factors affecting the carbon allowance market in the US  

International Nuclear Information System (INIS)

The US carbon allowance market has different characteristic and price determination process from the EU ETS market, since emitting installations voluntarily participate in emission trading scheme. This paper examines factors affecting the US carbon allowance market. An autoregressive distributed lag model is used to examine the short- and long-run relationships between the US carbon allowance market and its determinant factors. In the long-run, the price of coal is a main factor in the determination of carbon allowance trading. In the short-run, on the other hand, the changes in crude oil and natural gas prices as well as coal price have significant effects on carbon allowance market. (author)

225

Factors Affecting Wedding Banquet Venue Selection of Thai Wedding Couples  

Directory of Open Access Journals (Sweden)

Full Text Available The wedding day is one of the most important days for couples, so they want their ceremony to be as near to perfect as possible. Finding a venue for the wedding banquet is the first stage of the couple’s planning and many factors affect this decision. The objective of this research was to study the factors that affect the selection of wedding banquet venues among Thai wedding couples. This study obtained data via questionnaires and used statistical tests such as the Mann-Whitney U test and one-way analysis of variance. Results showed that among the 30 factors that were assessed by 222 respondents, good service from employees, food quality, the venue’s atmosphere, size of the event room and facilities in the wedding room were the five most important factors determining the attractiveness of a wedding banquet venue. The results demonstrated that respondents who organized a wedding banquet at a hotel prioritized the atmosphere. In contrast, respondents who organized a wedding banquet at a restaurant placed highest priority on the facilities of the wedding room. Results showed that significant differences regarding the factors that affect the selection of wedding banquet venues exist across groups with different demographic variables (i.e., age, income, education level.

Kulkanya Napompech

2014-01-01

226

Recession barely affects refined product demand  

Energy Technology Data Exchange (ETDEWEB)

An annual review and forecast of the petroleum products market situation in Canada is presented. Demand for refined petroleum products in Canada experienced a small decline in 1990 with the advent of adverse economic conditions. Total estimated requirements were 264,940 m{sup 3}/d, or 0.5% less than in 1989. A further 0.2% reduction in consumption is forecast for 1991. On a regional basis, statistics indicate that consumption in all regions was lower than in 1989, with the largest drop occurring in the Atlantic provinces. Refiners' sales increased in 3 of the 5 reporting regions. Canada maintained its status as a net exporter of refined products for the 18th consecutive year. Net refinery output was reduced in 1990 to 271,930 m{sup 3}/d, although 3 of the 5 regions reported increased throughput. Canadian dependence on foreign oil could slacken in 1991, except for Quebec and the Atlantic provinces. Imported oil had a 1.5% greater share of the Canadian market in 1990 compared to 1989, but a cutback of ca 1,050 m{sup 3}/d of imports is expected for 1991. Among the refinery products sold, gasoline ranks first in sales; compared to 1990, gasoline sales registered a marginal downturn of 0.5%. A drop of ca 0.7% is forecast for 1991. Lead-free regular gasoline continues to assume an ever-increasing share of the market, reaching 75.9% of total gasoline demand in 1990 compared to 66.5% in 1989. 3 tabs., 1 fig.

Rankin, A

1991-02-18

227

29 CFR 784.118 - The exemption is intended for work affected by natural factors.  

Science.gov (United States)

...intended for work affected by natural factors. 784.118...for work affected by natural factors. As indicated...materially affected by natural factors or elements...weather, the changeable conditions of the water, the run of the...

2010-07-01

228

Relationship between Factors of Construction Resources Affecting Project Cost  

Directory of Open Access Journals (Sweden)

Full Text Available The success of any construction project highly depends on how proper and effective the management of construction resources flow. Studies show that various resources factors affected cost management and have resulted to significant amount of cost overrun worldwide. However, a few investigations had been carried out in Malaysia regarding the effect of resources in construction industry. Hence, this study focuses on identifying significant resource factors causing construction cost overrun and also assessing the relationship between these factors. Data collection was carried out through a structured questionnaire survey consisting of 20 factors identified through a comprehensive literature review. Data was analyzed using statistical software package SPSS. The Cronbach’s alpha of the data was 0.910 which means that the collected data was highly reliable. The factors were ranked through mean rank approach and it was found that 3 most significant factors are “fluctuation of prices of materials”, “cash flow and financial difficulties faced by contractors” and “shortages of materials”. While the least significant factors in causing cost overrun are “insufficient numbers of equipment”, “relationship between management and labour”, and “labour absenteeism”. The result of Spearman test indicates that “cash flow and financial difficulties faced by contractors” with “financial difficulties of owner” correlate strongly at a significant level of 0.752. This identification of factors and relationships will help construction community in controlling resopurce factors for achieving project completion within the budget.

Ismail Abdul Rahman

2012-12-01

229

Factors Affecting the Habitability of Earth-like Planets  

Science.gov (United States)

Habitability is a measure of an environment's potential to support life. For exoplanets, the concept of habitability can be used broadly - to inform our calculations of the possibility and distribution of life elsewhere - or as a practical tool to inform mission designs and to prioritize specific targets in the search for extrasolar life. Although a planet's habitability does depend critically on the effect of stellar type and planetary semi-major axis on climate balance, work in the interdisciplinary field of astrobiology has identified many additional factors that can affect a planet's environment and its potential ability to support life. Life requires material for metabolism and structures, a liquid medium for chemical transport, and an energy source to drive metabolism and other life processes. Whether a planet's surface or sub-surface can provide these requirements is the result of numerous planetary and astrophysical processes that affect the planet's formation and evolution. Many of these factors are interdependent, and fall into three main categories: stellar effects, planetary effects and planetary system effects. Key abiotic processes affecting the resultant planetary environment include photochemistry (e.g. Segura et al., 2003; 2005), stellar effects on climate balance (e.g. Joshii et al., 2012; Shields et al., 2013), atmospheric loss (e.g. Lopez and Fortney, 2013), and gravitational interactions with the star (e.g. Barnes et al., 2013). In many cases, the effect of these processes is strongly dependent on a specific planet's existing environmental properties. Examples include the resultant UV flux at a planetary surface as a product of stellar activity and the strength of a planet's atmospheric UV shield (Segura et al., 2010); and the amount of tidal energy available to a planet to drive plate tectonics and heat the surface (Barnes et al., 2009), which is in turn due to a combination of stellar mass, planetary mass and composition, planetary orbital parameters and the gravitational influence of other planets in the system. A thorough assessment of a planet's environment and its potential habitability is a necessary first step in the search for biosignatures. Targeted environmental characteristics include surface temperature and pressure (e.g. Misra et al., 2013), a census of bulk and trace atmospheric gases, and whether there are signs of liquid water on the planetary surface (e.g. Robinson et al., 2010). The robustness of a planetary biosignature is dependent on being able to characterize the environment sufficiently well, and to understand likely star-planet interactions, to preclude formation of a biosignature gas via abiotic processes such as photochemistry (e.g. Segura et al., 2007; Domagal-Goldman et al., 2011; Grenfell et al., 2012). Here we also discuss potential false positives for O2 and O3, which, in large quantities, are often considered robust biosignatures for oxygenic photosynthesis. There is clearly significant future work required to better identify and understand the key environmental processes and interactions that allow a planet to support life, and to distinguish life's global impact on an environment from the environment itself.

Meadows, Victoria; NAI-Virtual Planetary Laboratory Team

2014-03-01

230

Factors affecting receipt of chemotherapy in women with breast cancer  

Directory of Open Access Journals (Sweden)

Full Text Available Libby Morimoto1, Jenna Coalson1, Fionna Mowat1, Cynthia O’Malley21Exponent Health Sciences, Menlo Park, CA, USA; 2Amgen Global Epidemiology, Thousand Oaks, CA, USAAims: To review literature describing factors associated with receipt of chemotherapy for breast cancer, to better understand what factors are most relevant to women’s health and whether health disparities are apparent, and to assess how these factors might affect observational studies and outcomes research. Patterns of care for metastatic breast cancer, for which no standard-of-care exists, were of particular interest.Methods: Relevant studies written in English, Italian, French, or Spanish, published in 2000 or later, were identified through MEDLINE and reviewed. Review articles and clinical trials were excluded; all observational studies and surveys were considered. Articles were reviewed for any discussion of patient characteristics, hospital/physician/insurance characteristics, psychosocial characteristics, and clinical characteristics affecting receipt of chemotherapy by breast cancer patients.Results: In general, factors associated with increased likelihood of receiving chemotherapy included younger age, being Caucasian, having good general health and few co-morbidities, having more severe clinical disease, having responded well to previous treatment, and having breast cancer that is estrogen- or progesterone-receptor-negative. Many of the clinical factors found to increase the likelihood of receiving chemotherapy were consistent with current oncology guidelines. Of the relevant 19 studies identified, only six (32% reported data specific to metastatic cancer; most studies aggregated women with stage I–IV for purposes of analysis.Conclusion: Studies of patterns of care in breast cancer treatment can help identify challenges in health care provided to particular subgroups of women and can aid researchers in designing studies that account for such factors in clinical and outcomes research. Although scarce, studies evaluating only women with metastatic breast cancer indicate that factors affecting decisions related to receipt of chemotherapy are similar across stage for this disease.Keywords: breast cancer, chemotherapy, metastatic, treatment decisions, health disparities

Libby Morimoto

2010-05-01

231

Physician-Related Factors Affecting Cardiac Rehabilitation Referral  

Directory of Open Access Journals (Sweden)

Full Text Available Background: Despite the positive impact of cardiac rehabilitation (CR on quality of life and mortality, the majority of people who could benefit from this program fail to participate in it. The lack of referral from the physician is a common reason that patients give for not seeking CR. The objective of this study was to compare factors affecting CR referral by cardiologists. Methods: A cross-sectional survey of 122 cardiologists, including 89 general cardiac specialists and 33 fellows in cardiology from 11 major cardiology training centers in Iran, was done in 2010. They responded to the 14- item investigator-generated survey, examining the physician’s attitudinal and knowledge factors affecting CR referral. Results: 47.9% of the subjects reported having available CR centers but only 6.6% reported continuous medical education on the topic. 90.7% of the physicians reported that less than 15% of patients are referred to CR centers. The main factor affecting the low referral rate was limited general knowledge about CR programs (79.5% such as program attributes and benefits, methods of reimbursement. Lack of insurance coverage, unavailability of CR centers in the community and low physicians’ fee were other factors reported by the physicians. Conclusion: Cardiologists’ inadequate general knowledge of and attitude toward CR programs seem to be a potential threat for cardiac prevention and rehabilitation in some societies.

Bahieh Moradi

2011-12-01

232

Factors Affecting Zebra Mussel Kill by the Bacterium Pseudomonas fluorescens  

Energy Technology Data Exchange (ETDEWEB)

The specific purpose of this research project was to identify factors that affect zebra mussel kill by the bacterium Pseudomonas fluorescens. Test results obtained during this three-year project identified the following key variables as affecting mussel kill: treatment concentration, treatment duration, mussel siphoning activity, dissolved oxygen concentration, water temperature, and naturally suspended particle load. Using this latter information, the project culminated in a series of pipe tests which achieved high mussel kill inside power plants under once-through conditions using service water in artificial pipes.

Daniel P. Molloy

2004-02-24

233

Single-tooth replacement: factors affecting different prosthetic treatment modalities  

Directory of Open Access Journals (Sweden)

Full Text Available Abstract Background The choice between several treatment options for replacing a single missing tooth is influenced by clinical, dentist- and patient-immanent factors. This study aimed to determine the patient factors that would affect the treatment decision to replace a single missing tooth and to assess the satisfaction with several options. Method 200 volunteers involved (121 females and 79 males divided into four groups, Group A: consisted of patients with conventional fixed partial dentures or patients with resin bonded fixed partial dentures. Group B: consisted of patients who received removable partial dentures while Group C: consisted of patients who received a single implant supported crown, and a control group D: consisted of patients who received no treatment. Data were collected using a questionnaire. Results The highest percentage of males within groups (58% was within the removable prostheses category. The majority of the subjects in the study reported that the main reason for replacing a missing tooth was for esthetic and function. Most important factor affecting the choice between treatment modalities was damaging the neighboring teeth. Pain, post operative sensitivity and dental phobia were important factors in choosing the prosthesis type and affected the control group patients not to have any treatment. The highest satisfaction percentage among groups studied was recorded for dental implants then FPD groups, while the least percentage were in both the control and RPD groups, for all aspects of function, esthetic and speech efficiency. Conclusions The final choice between FPD, RPD and implant depended on several factors which affected the decision making; among these is cost and patients' awareness of the different treatment options.

Al-Quran Firas A

2011-12-01

234

A model assay to demonstrate how intrinsic factors affect diffusion of bacteriocins.  

Science.gov (United States)

A rapid and simple method to elucidate how intrinsic factors in a given food product affect bacteriocin diffusion and efficacy is described. The basic idea of this assay is to help predict which bacteriocin or other inhibitory substance to select for a given product, where increased security towards specific microorganisms is wanted. In an agar plate model system the effect of five factors (number of indicator cells, pH and concentration of NaCl, agar and soy oil) on the diffusion of the bacteriocins sakacin A, sakacin P, pediocin PA-1, piscicolin 61 and nisin was studied. An experimental design permitting simultaneous evaluation of the effect of all factors was used. The results indicated that each bacteriocin has a characteristic intrinsic factor effect profile. However, pH and load of indicator cells affect all the bacteriocins. PMID:9506275

Blom, H; Katla, T; Hagen, B F; Axelsson, L

1997-09-16

235

Factors Affecting the Ethical Judgment of Business Ethics’ Students  

Directory of Open Access Journals (Sweden)

Full Text Available The main objective of this study is to examine the factors that affect the ethical judgment of Business Ethics students. The factors are year of study, gender, academic major, overall academic performance and Business Ethics result. A questionnaire survey was administered to 209 students taking Business Ethics course in a higher learning institution in Malaysia. Ethical vignettes obtained from Emerson and Conroy (2004 were used to capture how students evaluate the ethical behavior depicted in the vignettes. A multiple regression analysis revealed that Business Ethics result and year of study are factors that have a significant effect on the ethical judgment of students. The study reveals that Business Ethics result and year of study are significant factors that affect the ethical judgment of the students. The findings of this study may assist accounting practitioners and future employers in recruiting prospective employees. Employers may want to emphasis the significant factors in the hiring process future employees to ensure that the employees they employ have an appropriate level of ethical behavior.

Suhaiza Ismail

2013-12-01

236

Evaluation of Factors Affecting IASCC of Reactor Internal  

International Nuclear Information System (INIS)

Reactor internal of PWR is highly irradiated. The main damage mechanism of reactor internal has been considered as irradiation assisted stress corrosion cracking (IASCC). The effect of neutron irradiation on material has been studied by many researcher. Neutron irradiation depletes Cr content in grain boundary, induces hydrogen and helium, makes vacancy and dislocation loop. And the resistance of IASCC is decreased by neutron irradiation. These effects are different with materials and environment condition. To reduce IASCC, it is necessary to investigate which factor is the most important to IASCC. In this study, the relative importance of factors affecting IASCC is studied by artificial neural network method

237

Factors affecting the dermal bioavailability of hydrocarbons in soil  

International Nuclear Information System (INIS)

The science of risk assessment has advanced significantly in recent years, in a continuing effort to more accurately represent potential human health effects from exposure to chemicals in the environment. This paper describes some environmental factors that affect the behavior of chemicals in soil and the relationship of this chemical behavior to the prediction of dermal exposures relating to soil contamination. The information presented in this paper suggests that the mass transfer of chemicals from the soil to the skin is as much an issue in dermal exposures to soil-sorbed chemicals as the actual absorption of the chemical through the skin. Relevant factor affecting the sorption, desorption, and mass transfer of hydrocarbon chemicals in soil are discussed. A summary of the scientific literature related to research on chemicals sorbed to soil is also presented

238

Socioeconomic Factors Affecting Adoption of Sunflower Varieties in Sindh  

Directory of Open Access Journals (Sweden)

Full Text Available This research study is based on primary data collection from sunflower growers to assess the socioeconomic factors that are affecting the adoption of sunflower varieties in Sindh.Data samples have been selected from two districts; Badin and Thatta, as these districts are considered main sunflower growing areas in Sindh. The results reveal that Sunflower growers are using Hybrid varieties i.e. 43 percent planted Hysun-33, 29 percent Hysun-38 and 28 percent Hysun-37 varieties. The finding of research using multinomial logistic regression suggests that farm size and level of education significantly affected the adoption of sunflower varieties. These factors are statistically significant at p<0.05. Theother variables such as tenancy status and source of income are not statistically significant in the adoption of sunflower varieties in Sindh.

Ghulam Ali Jariko (Corresponding Author

2011-09-01

239

A Study on Factors Affecting Turnover Intention of Hotel Empolyees  

OpenAIRE

his study used linear structural modeling to explore the factors affecting the turnover intention of hotel employees in Taiwan. A total of 400 questionnaires were distributed to hotel employees. Among these, 350 were valid samples, a valid return rate of 87.50%. The empirical results showed that (1) more harmonious coworker relationships between hotel employees and a higher level of satisfaction regarding their work environment have a significantly positive effect on job satisfaction; (2) a h...

Chun-Chang Lee; Sheng-Hsiung Huang; Chen- Yi Zhao

2012-01-01

240

Factors affecting uptake of measles, mumps, and rubella immunisation.  

OpenAIRE

OBJECTIVE--To study factors affecting uptake of measles, mumps, and rubella immunisation. DESIGN--Cohort study using data from computerised child health systems. SETTING--10 health districts in North East Thames and North West Thames regions. SUBJECTS--7841 children born in January to March 1990 and resident in the districts up till the end of October 1991. MAIN OUTCOME MEASURES--Overall uptake of measles, mumps, and rubella immunisation, variation of uptake among groups of children, and odds...

Li, J.; Taylor, B.

1993-01-01

241

Statistical Analysis of the Different Factors Affecting the Diarrhea  

OpenAIRE

Diarrhea is a worldwide problem facing both developing countries and developed countries, especially in pediatric population. Because of shortage of health facilities and lack of good food in developing countries, it is known fact that developing countries are facing this death taking problem more. The main purpose of this study was to examine the various factors which affect the recovery time of diarrhea. A multiple linear regression was applied to analyze the data and to select a model. The...

Zaman, Qamruz; Khan, Imtiaz

2011-01-01

242

Factors Affecting D-7-Stigmastenol in Palestinian Olive Oil  

OpenAIRE

The level of delta-7-stigmastenol (D-7-stigmastenol) contained in olive oil is a new criterion for oil quality, particularly its purity from adulteration with other seed oils. In this study, 79 olive samples were collected and analyzed from different areas of Palestine to study the factors affecting D-7-stigmastenol levels in the oil. These areas included the provinces of Jericho, Hebron, Bethlehem, Ramallah, Salfeet, Nablus, Jenin, Tulkarem and Qalqilyah. The study began in October 2007 and ...

Abu-alruz, K.; Afaneh, I. A.; Quasem, J. M.; Hmidat, M. A.; Abbady, J.; Mazahreh, A. S.

2011-01-01

243

Contributing factors affecting the prognosis surgical outcome for thoracic OLF  

OpenAIRE

The thoracic ossification of ligamentum flavum (OLF) is a disease that produces spastic paraparesis, and there are various factors that may affect the surgical outcome of thoracic OLF patients. The authors of this study treated 19 of these thoracic OLF patients from 1998 to 2002, and retrospectively reviewed the patients? age, sex, symptom duration, involved disease level, preoperative clinical features, neurological findings, radiological findings, the other combined spinal diseases and ...

Kuh, Sung Uk; Kim, Young Soo; Cho, Yong Eun; Jin, Byung Ho; Kim, Keun Su; Yoon, Young Sul; Chin, Dong Kyu

2005-01-01

244

Urban vs. rural factors that affect adult asthma.  

Science.gov (United States)

In this review, our aim was to examine the influence of geographic variations on asthma prevalence and morbidity among adults, which is important for improving our understanding, identifying the burden, and for developing and implementing interventions aimed at reducing asthma morbidity. Asthma is a complex inflammatory disease of multifactorial origin, and is influenced by both environmental and genetic factors. The disparities in asthma prevalence and morbidity among the world's geographic locations are more likely to be associated with environmental exposures than genetic differences. In writing this article, we found that the indoor factors most consistently associated with asthma and asthma-related symptoms in adults included fuel combustion, mold growth, and environmental tobacco smoke in both urban and rural areas. Asthma and asthma-related symptoms occurred more frequently in urban than in rural areas, and that difference correlated with environmental risk exposures, SES, and healthcare access. Environmental risk factors to which urban adults were more frequently exposed than rural adults were dust mites,high levels of vehicle emissions, and a westernized lifestyle.Exposure to indoor biological contaminants in the urban environment is common.The main risk factors for developing asthma in urban areas are atopy and allergy to house dust mites, followed by allergens from animal dander. House dust mite exposure may potentially explain differences in diagnosis of asthma prevalence and morbidity among adults in urban vs. rural areas. In addition, the prevalence of asthma morbidity increases with urbanization. High levels of vehicle emissions,Western lifestyles and degree of urbanization itself, may affect outdoor and thereby indoor air quality. In urban areas, biomass fuels have been widely replaced by cleaner energy sources at home, such as gas and electricity, but in most developing countries, coal is still a major source of fuel for cooking and heating, particularly in winter. Moreover, exposure to ETS is common at home or at work in urban areas.There is evidence that asthma prevalence and morbidity is less common in rural than in urban areas. The possible reasons are that rural residents are exposed early in life to stables and to farm milk production, and such exposures are protective against developing asthma morbidity. Even so, asthma morbidity is disproportionately high among poor inner-city residents and in rural populations. A higher proportion of adult residents of nonmetropolitan areas were characterized as follows:aged 55 years or older, no previous college admission, low household income, no health insurance coverage, and could not see a doctor due to healthcare service availability, etc. In rural areas, biomass fuels meet more than 70% of the rural energy needs. Progress in adopting modern energy sources in rural areas has been slow. The most direct health impact comes from household energy use among the poor, who depend almost entirely on burning biomass fuels in simple cooking devices that are placed in inadequately ventilated spaces. Prospective studies are needed to assess the long-term effects of biomass smoke on lung health among adults in rural areas.Geographic differences in asthma susceptibility exist around the world. The reason for the differences in asthma prevalence in rural and urban areas may be due to the fact that populations have different lifestyles and cultures, as well as different environmental exposures and different genetic backgrounds. Identifying geographic disparities in asthma hospitalizations is critical to implementing prevention strategies,reducing morbidity, and improving healthcare financing for clinical asthma treatment. Although evidence shows that differences in the prevalence of asthma do exist between urban and rural dwellers in many parts of the world, including in developed countries, data are inadequate to evaluate the extent to which different pollutant exposures contribute to asthma morbidity and severity of asthma between urban and rural areas. PMID:23625129

Jie, Yu; Isa, Zaleha Md; Jie, Xu; Ju, Zhang Long; Ismail, Noor Hassim

2013-01-01

245

Parallel factor analysis PARAFAC of process affected water  

Energy Technology Data Exchange (ETDEWEB)

A parallel factor analysis (PARAFAC) of oil sands process-affected water was presented. Naphthenic acids (NA) are traditionally described as monobasic carboxylic acids. Research has indicated that oil sands NA do not fit classical definitions of NA. Oil sands organic acids have toxic and corrosive properties. When analyzed by fluorescence technology, oil sands process-affected water displays a characteristic peak at 290 nm excitation and approximately 346 nm emission. In this study, a parallel factor analysis (PARAFAC) was used to decompose process-affected water multi-way data into components representing analytes, chemical compounds, and groups of compounds. Water samples from various oil sands operations were analyzed in order to obtain EEMs. The EEMs were then arranged into a large matrix in decreasing process-affected water content for PARAFAC. Data were divided into 5 components. A comparison with commercially prepared NA samples suggested that oil sands NA is fundamentally different. Further research is needed to determine what each of the 5 components represent. tabs., figs.

Ewanchuk, A.M.; Ulrich, A.C.; Sego, D. [Alberta Univ., Edmonton, AB (Canada). Dept. of Civil and Environmental Engineering; Alostaz, M. [Thurber Engineering Ltd., Calgary, AB (Canada)

2010-07-01

246

Factors affecting Culicoides species composition and abundance in avian nests.  

Science.gov (United States)

Mechanisms affecting patterns of vector distribution among host individuals may influence the population and evolutionary dynamics of vectors, hosts and the parasites transmitted. We studied the role of different factors affecting the species composition and abundance of Culicoides found in nests of the blue tit (Cyanistes caeruleus). We identified 1531 females and 2 males of 7 different Culicoides species in nests, with C. simulator being the most abundant species, followed by C. kibunensis, C. festivipennis, C. segnis, C. truncorum, C. pictipennis and C. circumscriptus. We conducted a medicationxfumigation experiment randomly assigning bird's nests to different treatments, thereby generating groups of medicated and control pairs breeding in fumigated and control nests. Medicated pairs were injected with the anti-malarial drug Primaquine diluted in saline solution while control pairs were injected with saline solution. The fumigation treatment was carried out using insecticide solution or water for fumigated and control nests respectively. Brood size was the main factor associated with the abundance of biting midges probably because more nestlings may produce higher quantities of vector attractants. In addition, birds medicated against haemoparasites breeding in non-fumigated nests supported a higher abundance of C. festivipennis than the rest of the groups. Also, we found that the fumigation treatment reduced the abundance of engorged Culicoides in both medicated and control nests, thus indicating a reduction of feeding success produced by the insecticide. These results represent the first evidence for the role of different factors in affecting the Culicoides infracommunity in wild avian nests. PMID:19523254

Martínez-de la Puente, J; Merino, S; Tomás, G; Moreno, J; Morales, J; Lobato, E; Talavera, S; Sarto I Monteys, V

2009-08-01

247

Factors Affecting the Crevice Corrosion Susceptibility of Alloy 22  

Energy Technology Data Exchange (ETDEWEB)

The susceptibility or Alloy 22 (N06022) to crevice corrosion may depend on environmental or external factors and metallurgical or internal factors. Some of the most important environmental factors are chloride concentration, inhibitors, temperature and potential. The presence of a weld seam or second phase precipitation in the alloy are classified as internal factors. The localized corrosion resistance of Alloy 22 has been extensively investigated in the last five years, however not all affecting factors were considered in the studies. This paper discusses the current findings regarding the effect of many of these variables on the susceptibility (or resistance) of Alloy 22 to crevice corrosion. The effect of variables such as temperature, chloride concentration and nitrate are rather well understood. However there are only limited or no data regarding effect of other factors such as pH, other inhibitive or deleterious species and type of crevicing material and crevice geometry. There are contradictory results regarding the effect of metallurgical factors such as solution heat treatment.

Rebak, R B

2004-11-24

248

Factors Affecting Perceived Stigma in Leprosy Affected Persons in Western Nepal  

Science.gov (United States)

Background There are various factors which construct the perception of stigma in both leprosy affected persons and unaffected persons. The main purpose of this study was to determine the level of perceived stigma and the risk factors contributing to it among leprosy affected person attending the Green Pastures Hospital, Pokhara municipality of western Nepal. Methods A cross-sectional study was conducted among 135 people affected by leprosy at Green Pastures Hospital and Rehabilitation Centre. Persons above the age of 18 were interviewed using a set of questionnaire form and Explanatory Model Interview Catalogue (EMIC). In addition, two sets of focused group discussions each containing 10 participants from the ward were conducted with the objectives of answering the frequently affected EMIC items. Results Among 135 leprosy affected persons, the median score of perceived stigma was 10 while it ranged from 0–34. Higher perceived stigma score was found in illiterate persons (p?=?0.008), participants whose incomes were self-described as inadequate (p?=?0.014) and who had changed their occupation due to leprosy (p?=?0.018). Patients who lacked information on leprosy (p?=?0.025), knowledge about the causes (p?=?0.02) and transmission of leprosy (p?=?0.046) and those who had perception that leprosy is a severe disease (p<0.001) and is difficult to treat (p<0.001) had higher perceived stigma score. Participants with disfigurement or deformities (p?=?0.014), ulcers (p?=?0.022) and odorous ulcers (p?=?0.043) had higher perceived stigma score. Conclusion The factors associated with higher stigma were illiteracy, perceived economical inadequacy, change of occupation due to leprosy, lack of knowledge about leprosy, perception of leprosy as a severe disease and difficult to treat. Similarly, visible deformities and ulcers were associated with higher stigma. There is an urgent need of stigma reduction strategies focused on health education and health awareness programs in addition to the necessary rehabilitation support. PMID:24901307

Adhikari, Bipin; Kaehler, Nils; Chapman, Robert S.; Raut, Shristi; Roche, Paul

2014-01-01

249

EXPLORING THE FACTORS AFFECTING EMPLOYEES’ ADOPTION AND USE OF INNOVATION  

Directory of Open Access Journals (Sweden)

Full Text Available This paper explores the factors affecting innovation adoption by individual employees within an organization in Australia. Following a qualitative research approach, this paper uses a series of in-depth interviews and focus group discussions involving academic and administrative employees at a tertiary educational institution in Australia. The qualitative approach is adopted to have a deeper insight into the complexities and dynamism associated with the factors influencing innovation adoption process in organizational settings. The findings of this research highlight the need for broadening an understanding of the key factors affecting employee’s decisions to uptake the adoption of innovation. The results provide important clues for comprehending the factors influencing and determining the employee’s adoption and continued use of innovation in the work environment. In the face of the current trend towards end-user applications of technological innovation, the results suggest some guidelines for management toward effective and efficient adoption and use of innovation in organizational settings. This paper has highlighted the above findings and their implications for management practices related to innovation management in an Australian organizational setting. This paper also identifies possible limitations and future research potential in the relevant field.

Majharul Talukder

2010-01-01

250

Factors affecting leachability of Cs-137 in cement matrix  

International Nuclear Information System (INIS)

Various factors affecting the leachability of Cs-137 in cement matrix are investigated. System factors include such as pressure curing, vibration curing, pressure leaching and the dependency of exposed surface area. Solid factors are the effect of the clay(natural zeolite catalyst) addition, ion-exchange resin (IRN-77) addition, and CO/sub 2/ and air injection. Cement matrices usually may not contact directly with underground water in real repository, since the surroundings of disposed drums is filled with backfill material. Thus, the effect of backfill material to the leachability is also investigated. The well-known diffusion theory was utilized to predict long term leach rate and cumulative fraction leached of Cs-137 or non-radioactive species

251

FACTORS AFFECTING TEACHERS’ USE OF INFORMATION AND COMMUNICATION TECHNOLOGY  

Directory of Open Access Journals (Sweden)

Full Text Available Research studies in the past decade have shown that computer technology is an effective means for widening educational opportunities, but most teachers neither use technology as an instructional delivery system nor integrate technology into their curriculum. Studies reveal a number of factors influencing teachers’ decisions to use ICT in the classroom: non-manipulative and manipulative school and teacher factors. These factors are interrelated. The success of the implementation of ICT is not dependent on the availability or absence of one individual factor, but is determined through a dynamic process involving a set of interrelated factors. It is suggested that ongoing professional development must be provided for teachers to model the new pedagogies and tools for learning with the aim of enhancing the teaching-learning process. However, it is important for teacher trainers and policy makers to understand the factors affecting effectiveness and cost-effectiveness of different approaches to ICT use in teacher training so training strategies can be appropriately explored to make such changes viable to all.

Mojgan Afshari

2009-01-01

252

Factors Affecting Business Success of Small & Medium Enterprises (SMEs in Thailand  

Directory of Open Access Journals (Sweden)

Full Text Available This study attempted to identify factors that are affecting business success of small and medium enterprises (SMEs in Thailand. The intention of this study is to provide the understanding on how people should start their business by looking at all the factors affecting business success hence help to reduce the risk of failure and increase chances of success. The study examined eight factors that influence the SMEs business success. These factors are: SMEs characteristic, management and know-how, products and services, Customer and Market, the way of doing business and cooperation, resources and finance, Strategy, and external environment. The theoretical framework has been drawn out and questionnaire was designed based on the factors chosen. Eight hypotheses were developed to find out factors that are affecting Business Success of SMEs in Thailand. The entire hypotheses were successfully tested with SPSS and five hypotheses were accepted. The regression analysis result shown that the most significant factors affecting business success of SMEs in Thailand were SMEs characteristics, customer and market, the way of doing business, resources and finance, and external environment.

Chuthamas Chittithaworn

2011-04-01

253

A conceptual model for factors affecting the relationship between supply chain integration and customer delivery performance  

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Full Text Available Supply chain is a widely used concept around the world. Nowadays, companies need to integrate their production processes, from the raw materials to the end-user. Supply chain management is a phenomenon that achieves this in a way that ensures customers get reliable and fast service and high quality products at the lowest possible cost. There is very limited and sporadic research on supply chain integration and how it affects supply chain performance. Therefore there is no real understanding of the concept of supply chain integration and how it affects supply chain performance nor is there a holistic model. This paper thus aims to present a model that identifies factors affecting the relationship between supply chain integration and customer delivery performance. After analyzing the collected data on supply chain integration and customer delivery performance, the preliminary model was proposed and completed, and using expert opinion in the Imam Khomeini Oil Refinery the final model and for factors affecting the relationship between supply chain integration and customer delivery performance were presented. To determine how these factors interrelate with each other, the DEMATEL method was then used. The statistical population included the staff at Imam Khomeini Oil Refinery in Shazand. The data, collected through the standard DEMATEL questionnaire, were analyzed using the DEMATEL method and a MATLAB program. The DEMATEL results indicate that intra-organizational factors, institutional norms, technological certainties are causal factors which influence other factors that affect the relationship between supply chain integration and customer delivery performance. Intra-organizational factor have a greater influence also among effect factors, substructures have the greatest influence.

Peyman Ghafari Ashtiani

2013-09-01

254

Crop production in salt affected soils: A biological approach  

International Nuclear Information System (INIS)

Plant are susceptible to deleterious effects of various abiotic and biotic stresses, thus grossly affecting the growth and productivity. Amongst the abiotic stresses, soil salinity is most significant and prevalent in both developed and developing countries. As a consequences, good productive lands are being desertified at a very high pace. To combat this problem various approaches involving soil management and drainage are underway but with little success. It seems that a durable solution of the salinity and water-logging problems may take a long time and we may have to learn to live with salinity and to find other ways to utilize the affected lands fruitfully. A possible approach could be to tailor plants to suit the deleterious environment. The saline-sodic soils have excess of sodium, are impermeable, have little or no organic matter and are biologically almost dead. Introduction of a salt tolerant crop will provide a green cover and will improve the environment for biological activity, increase organic matter and will improve the soil fertility. The plant growth will result in higher carbon dioxide levels, and would thus create acidic conditions in the soil which would dissolve the insoluble calcium carbonate and will help exchange sodium with calcium ions on the soil complex. The biomass produced could be used directly as fodder or by the use of biotechnological and other procedures it could be converted into other value added products. However, in order to tail added products. However, in order to tailor plants to suit these deleterious environments, acquisition of better understanding of the biochemical and genetic aspects of salt tolerance at the cellular/molecular level is essential. For this purpose model systems have been carefully selected to carry out fundamental basic research that elucidates and identifies the major factors that confer salt tolerance in a living system. With the development of modern biotechnological methods it is now possible to introduce any foreign genetic material known to confer salt tolerance into crop plants. Some of the approaches and results obtained are being discussed. (author). 43 refs, 3 figs, 1 tab

255

Environmental and genetic factors affecting cow survival of Israeli Holsteins.  

Science.gov (United States)

The objectives were to investigate the effects of various environmental factors that may affect herd-life of Israeli Holsteins, including first-calving age and season, calving ease, number of progeny born, and service sire for first calving in complete and truncated records; and to estimate heritabilities and genetic correlations between herd-life and the other traits included in the Israeli breeding index. The basic data set consisted of 590,869 cows in milk recording herds with first freshening day between 1985 and at least 8 yr before the cut-off date of September 15, 2013. Herd-life was measured as days from first calving to culling. The phenotypic and genetic trends for herd-life were 5.7 and 16.8d/yr. The genetic trend was almost linear, whereas the phenotypic trend showed 4 peaks and 3 valleys. Cows born in February and March had the shortest herd-life, whereas cows born in September had the longest herd-life. Herd-life was maximal with calving age of 23mo, which is 1mo less than the mean calving age, and minimal at 19 and 31mo of calving age. Dystocia and twinning on first-parity calving reduced herd-life by approximately180 and 120d, but the interaction effect increased herd-life by 140d. Heritability for herd-life was 0.14. Despite the fact that the service sire effect was significant in the fixed model analysis, service sire effect accounted for dystocia and twinning rate were very similar but less than 50% of the effects found in the analysis of complete records. Pregnancy at the truncation date increased expected herd-life by 432d. The correlation between actual herd-life and predicted herd-life based on truncated records was 0.44. Genetic correlations between the truncated records and actual herd-life were 0.75 for records truncated after 6mo but approached unity for records truncated after 3 yr. The genetic correlations of herd-life with first-parity milk, fat, and protein production, somatic cell score (SCS), and female fertility were all positive, except for SCS, in which negative values are economically favorable. The highest correlations with herd-life in absolute value were with female fertility and SCS. PMID:25468704

Weller, J I; Ezra, E

2015-01-01

256

Biologics formulation factors affecting metal leachables from stainless steel.  

Science.gov (United States)

An area of increasing concern and scientific scrutiny is the potential contamination of drug products by leachables entering the product during manufacturing and storage. These contaminants may either have a direct safety impact on the patients or act indirectly through the alteration of the physicochemical properties of the product. In the case of biotherapeutics, trace amounts of metal contaminants can arise from various sources, but mainly from contact with stainless steel (ss). The effect of the various factors, buffer species, solution fill volume per unit contact surface area, metal chelators, and pH, on metal leachables from contact with ss over time were investigated individually. Three major metal leachables, iron, chromium, and nickel, were monitored by inductively coupled plasma-mass spectrometry because they are the major components of 316L ss. Iron was primarily used to evaluate the effect of each factor since it is the most abundant. It was observed that each studied factor exhibited its own effect on metal leachables from contact with ss. The effect of buffer species and pH exhibited temperature dependence over the studied temperature range. The metal leachables decreased with the increased fill volume (mL) per unit contact ss surface area (cm(2)) but a plateau was achieved at approximately 3 mL/cm(2). Metal chelators produced the strongest effect in facilitating metal leaching. In order to minimize the metal leachables and optimize biological product stability, each formulation factor must be evaluated for its impact, to balance its risk and benefit in achieving the target drug product shelf life. PMID:21360314

Zhou, Shuxia; Schöneich, Christian; Singh, Satish K

2011-03-01

257

An Improved Reinforcement Learning System Using Affective Factors  

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Full Text Available As a powerful and intelligent machine learning method, reinforcement learning (RL has been widely used in many fields such as game theory, adaptive control, multi-agent system, nonlinear forecasting, and so on. The main contribution of this technique is its exploration and exploitation approaches to find the optimal solution or semi-optimal solution of goal-directed problems. However, when RL is applied to multi-agent systems (MASs, problems such as “curse of dimension”, “perceptual aliasing problem”, and uncertainty of the environment constitute high hurdles to RL. Meanwhile, although RL is inspired by behavioral psychology and reward/punishment from the environment is used, higher mental factors such as affects, emotions, and motivations are rarely adopted in the learning procedure of RL. In this paper, to challenge agents learning in MASs, we propose a computational motivation function, which adopts two principle affective factors “Arousal” and “Pleasure” of Russell’s circumplex model of affects, to improve the learning performance of a conventional RL algorithm named Q-learning (QL. Compared with the conventional QL, computer simulations of pursuit problems with static and dynamic preys were carried out, and the results showed that the proposed method results in agents having a faster and more stable learning performance.

Takashi Kuremoto

2013-07-01

258

Multifactorial analysis of factors affecting recurrence of stroke in Japan.  

Science.gov (United States)

Data on factors affecting stroke recurrence are relatively limited. The authors examined potential factors affecting stroke recurrence, retrospectively. The study participants were 1087 patients who were admitted to stroke centers suffering from first-ever ischemic stroke and returned questionnaires with usable information after discharge. The authors analyzed the association between clinical parameters of the patients and their prognosis. Recurrence rate of during an average of 2 years after discharge was 21.3%, and there were differences among stroke subtypes. It was found that the disability level of the patients after discharge correlated well with the level at discharge (r s = 0.66). Multivariate logistic regression analysis of the data shows that modified Rankin Scale score, National Institute of Health Stroke Scale score, gender, age, and family history had statistically significant impacts on stroke recurrence, and the impact was different depending on subtypes. These findings suggest that aggressive and persistent health education for poststroke patients and management of risk factors are essential to reduce stroke recurrence. PMID:22500031

Omori, Toyonori; Kawagoe, Masahiro; Moriyama, Michiko; Yasuda, Takeshi; Ito, Yasuhiro; Hyakuta, Takeshi; Nagatsuka, Kazuyuki; Matsumoto, Masayasu

2015-03-01

259

Factors Affecting D-7-Stigmastenol in Palestinian Olive Oil  

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Full Text Available The level of delta-7-stigmastenol (D-7-stigmastenol contained in olive oil is a new criterion for oil quality, particularly its purity from adulteration with other seed oils. In this study, 79 olive samples were collected and analyzed from different areas of Palestine to study the factors affecting D-7-stigmastenol levels in the oil. These areas included the provinces of Jericho, Hebron, Bethlehem, Ramallah, Salfeet, Nablus, Jenin, Tulkarem and Qalqilyah. The study began in October 2007 and ended in July 2008. The following 11 factors were taken into consideration during sample collection: olive fly infection, topography, olive storage before pressing, geographical area, effect of olive seeds during oil extraction, effect of pressing temperature, presence of olive leaves during oil extraction, soil type, maturity index of the olive fruit, olive variety and oil preservation and storage in terms of storage container types. The results show that soil type, region, maturity index and olive fly infection are the main factors affecting D-7-stigmastenol. Pressing temperature, olive storage before pressing, olive variety and oil storage showed a moderate effect. Olive seeds, topography and presence of olive leaves had a negligible effect on D-7-stigmastenol levels in the oil.

K. Abu-Alruz

2011-01-01

260

A systematic study on factors affecting patient dose, (1)  

International Nuclear Information System (INIS)

In the study of possible reduction in irradiation dose to patients during medical treatments, the following two methods can be considered: (1) To obtain absorbed doses for each part of a body in diagnostic X-ray examinations. (2) To obtain data on factors such as the tube voltage which may affect patient dose. There are a number of reports both at home and abroad concerning the above (1), but very few reports are available concerning the above (2). Moreover, most of them are on fragmentary aspects of each factor and no systematic reports have been made. For this reason, we have taken up, as factors affecting the patient dose, the field size, the tube voltage, and by checking them again, we wanted to obtain some systematic data. Our aim has been fully attained by conducting an experiment. In the ICRP's Publ. 26 issued last year, the idea of the critical organ which had not been fully elucidated in the Publ. 9 was abandoned. As a result, assessment of the irradiation doses has become more rational and the total risk for an individual was obtained. In Japan, the idea proposed in the Publ. 9 is adopted. Therefore, in this paper, we will raise some questions regarding the assessment of the irradiation doses, pointing out at the same time the rationality of the idea put forward in Publ. 26. (author)

261

Factors Affecting Customer Satisfaction in Mobile Telecommunication Industry in Bangladesh  

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Full Text Available Identification of factors responsible for customer satisfaction is a key concern of marketing scholars and marketers in now a days and it will remain in the future. There is considerable evidence that quality factors affecting customer satisfaction in numerous ways. However, this empirical study is initiated to find out what particular factors responsible for customer satisfaction in the mobile tel- ecommunication industry in Bangladesh. 282 samples have been collected through structured questionnaire; study reveals that service innovativeness, service reli- ability, service competitiveness and service consistency have significant influence on making customer satisfied and the operator’s network/signal coverage, pricing, offering, fulfillment of customer demand, value added service, brand value and op - erators contribution for society have insignificant influences on making customer satisfied at five percent level of significant at multiple regression analysis. On the basis of these findings; study concludes that in promoting customer satisfaction mobile service providers should be concerned for factors responsible for insignifi- cant influence on customer satisfaction and care of those factors have significant influence on promoting customer satisfaction in telecommunication industry in Bangladesh.

Md. Rahman

2014-06-01

262

Factors affecting surface and release properties of thin PDMS films  

DEFF Research Database (Denmark)

Polydimethysiloxane (PDMS) elastomers are commonly used as dielectric electroactive polymers (DEAP). DEAP films are used in making actuators, generators and sensors. In the large scale manufacture of DEAP films, release of films from the substrate (carrier web) induces some defects and pre-strain in the films which affect the overall performance of the films. The current research is directed towards investigating factors affecting the peel force and release of thin, corrugated polydimethylsiloxane films used in DEAP films. It has been shown that doping the PDMS films with small quantities of perfluoroether allylamide (PFE) lowered the surface energy which could ease the release. This is further investigated together with an evaluation of the resulting change in actuator performance. The relationship between the adhesive energy, surface energy, Young’s modulus and peel force of the films is analyzed.

Vudayagiri, Sindhu; Junker, Michael Daniel

2013-01-01

263

Chinese multinationals: how do institutional factors affect their location patterns?  

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Full Text Available This paper analyses the impact of various host country institutional factors on the location patterns of 29 large Chinese multinationals. From a sample of 127 outward foreign direct investment (FDI decisions made in 52 countries, our findings suggest that a greater difficulty in doing business and a high political risk in the host country do not discourage Chinese multinationals. However, the presence of overseas Chinese in the host country, a larger absolute host market size and a higher volume of Chinese exports to that country affect positively.

Diego Quer Ramón

2011-11-01

264

Genetic and physiological factors affecting repair and mutagenesis in yeast  

Energy Technology Data Exchange (ETDEWEB)

Current views of DNA repair and mutagenesis in the yeast Saccharomyces cerevisiae are discussed in the light of recent data and with emphasis on the isolation and characterization of genetically well-defined mutations that affect DNA metabolism in general (including replication and recombination). Various pathways of repair are described, particularly in relation to their imvolvement in mutagenic mechanisms. In addition to genetic control, certain physiological factors such as cell age, DNA replication, and the regulatory state of the mating-type locus are shown to also play a role in repair and mutagenesis.

Lemontt, J F

1979-01-01

265

Genetic and physiological factors affecting repair and mutagenesis in yeast  

Energy Technology Data Exchange (ETDEWEB)

Current views of DNA repair and mutagenesis in the yeast Saccharomyces cerevisiae are discussed in the light of recent data, and with emphasis on the isolation and characterization of genetically well-defined mutations that affect DNA metabolism in general (including replication and recombination). Various pathways of repair are described particularly in relation to their involvement in mutagenic mechanisms. In addition to genetic control, certain physiological factors such as cell age, DNA replication, and the regulatory state of the mating-type locus, are shown to also play a role in repair and mutagenesis.

Lemontt, J F

1979-01-01

266

Factors Affecting Linear Type Traits of Valdostana Cattle  

OpenAIRE

Four composite and 22 individual linear type traits, measured between 1997 and 2012 on 33,206 Aosta Red Pied (ARP) and 19,551 Aosta Black Pied and Aosta Chestnut (ABP-CN) strains of Valdostana cattle, were used to investigate the non-genetic factors affecting morphological evaluation. Average values for type traits ranged from 2.81 (teat placement rear view and foot angle) to 3.34 (thinness) for ARP, and from 2.48 (teat placement side view) to 3.67 (udder depth) for ABP-CN. Results from the A...

Serena Mazza; Cristina Sartori; Donagh Berry; Roberto Mantovani

2013-01-01

267

Genetic and physiological factors affecting repair and mutagenesis in yeast  

International Nuclear Information System (INIS)

Current views of DNA repair and mutagenesis in the yeast Saccharomyces cerevisiae are discussed in the light of recent data, and with emphasis on the isolation and characterization of genetically well-defined mutations that affect DNA metabolism in general (including replication and recombination). Various pathways of repair are described particularly in relation to their involvement in mutagenic mechanisms. In addition to genetic control, certain physiological factors such as cell age, DNA replication, and the regulatory state of the mating-type locus, are shown to also play a role in repair and mutagenesis

268

Factors Affecting English Language Teaching and Learning in Higher Education  

Directory of Open Access Journals (Sweden)

Full Text Available This paper reports part of a study that aims to explore factors affecting the efficacy of non-major English teaching and learning in Vietnamese higher education through an investigation of classroom practices. Eight non-participant class observations were conducted at HUTECH University, Ho Chi Minh City, Vietnam. The study’s findings show that many factors hinder the quality of English teaching and learning: uninteresting teaching style; insufficient time for communicative activities; grammar-driven teaching; unreasonable time-management; unclear instructions; large class sizes; teachers’ limited ability in classroom organization; unequal students’ English levels; inadequate lesson preparation; teachers’ limited use of teaching aids and technology; and students’ lack of confidence in using oral English in class activities. Based on these results, recommendations are given to improve the quality of non-major English teaching and learning, at HUTECH University in particular and in Vietnamese higher education in general.

Hong Thi Nguyen

2014-07-01

269

Factors affecting the prevalence of obesity among primary school students  

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Full Text Available Objective: The aim of this descriptive study was to investigate the risk factors affecting obesity in students in the 6-15 years old age group. There were 868 students registered at Bahçelievler Elementary School in Zonguldak and were present for face-to-face meetings on the days the research data was collected. Data was collected using demographic questionary forms and weight-length measurements from March to April in 2010. Results: Difference is found to be statistically meaningful with respect to the relationship between obesity of children and their age, gender, number of siblings, fathers’ jobs, education level of their mothers, fast food consumption and family history of obesity (p<0.05. Conclusions: The study concludes that there are certain ciriteria related to the development of obesity during a specific period of childhood and that taking certain precautions are effective in preventing the development of obesity. Keywords: Body Mass Index; Children; Obesity; Prevalence; Risk Factors; Turkey.

Meltem Kürtüncü

2014-09-01

270

Multiscale factors affecting human attitudes toward snow leopards and wolves.  

Science.gov (United States)

The threat posed by large carnivores to livestock and humans makes peaceful coexistence between them difficult. Effective implementation of conservation laws and policies depends on the attitudes of local residents toward the target species. There are many known correlates of human attitudes toward carnivores, but they have only been assessed at the scale of the individual. Because human societies are organized hierarchically, attitudes are presumably influenced by different factors at different scales of social organization, but this scale dependence has not been examined. We used structured interview surveys to quantitatively assess the attitudes of a Buddhist pastoral community toward snow leopards (Panthera uncia) and wolves (Canis lupus). We interviewed 381 individuals from 24 villages within 6 study sites across the high-elevation Spiti Valley in the Indian Trans-Himalaya. We gathered information on key explanatory variables that together captured variation in individual and village-level socioeconomic factors. We used hierarchical linear models to examine how the effect of these factors on human attitudes changed with the scale of analysis from the individual to the community. Factors significant at the individual level were gender, education, and age of the respondent (for wolves and snow leopards), number of income sources in the family (wolves), agricultural production, and large-bodied livestock holdings (snow leopards). At the community level, the significant factors included the number of smaller-bodied herded livestock killed by wolves and mean agricultural production (wolves) and village size and large livestock holdings (snow leopards). Our results show that scaling up from the individual to higher levels of social organization can highlight important factors that influence attitudes of people toward wildlife and toward formal conservation efforts in general. Such scale-specific information can help managers apply conservation measures at appropriate scales. Our results reiterate the need for conflict management programs to be multipronged. PMID:25039397

Suryawanshi, Kulbhushansingh R; Bhatia, Saloni; Bhatnagar, Yash Veer; Redpath, Stephen; Mishra, Charudutt

2014-12-01

271

The Factors that Affect Science Teachers' Participation in Professional Development  

Science.gov (United States)

Scientific literacy for our students and the possibilities for careers available in Science, Technology, Engineering, and Mathematics (STEM) areas are important topics for economic growth as well as global competitiveness. The achievement of students in science learning is dependent upon the science teachers' effectiveness and experienced science teachers depend upon relevant professional development experiences to support their learning. In order to understand how to improve student learning in science, the learning of science teachers must also be understood. Previous research studies on teacher professional development have been conducted in other states, but Minnesota science teachers comprised a new and different population from those previously studied. The purpose of this two-phase mixed methods study was to identify the current types of professional development in which experienced, Minnesota secondary science teachers participated and the factors that affect their participation in professional development activities. The mixed-methods approach s utilized an initial online survey followed by qualitative interviews with five survey respondents. The results of the quantitative survey and the qualitative interviews indicated the quality of professional development experiences and the factors which affected the science teachers' participation in professional development activities. The supporting and inhibiting factors involved the availability of resources such as time and money, external relationships with school administrators, teacher colleagues, and family members, and personal intrinsic attributes such as desires to learn and help students. This study also describes implications for science teachers, school administrators, policymakers, and professional development providers. Recommendations for future research include the following areas: relationships between and among intrinsic and extrinsic factors, science-related professional development activities within local school districts, the use of formal and informal professional development, and the needs of rural science teachers compared to urban and suburban teachers.

Roux, Judi Ann

272

Enzymatic biodiesel synthesis. Key factors affecting efficiency of the process  

Energy Technology Data Exchange (ETDEWEB)

Chemical processes of biodiesel production are energy-consuming and generate undesirable by-products such as soaps and polymeric pigments that retard separation of pure methyl or ethyl esters of fatty acids from glycerol and di- and monoacylglycerols. Enzymatic, lipase-catalyzed biodiesel synthesis has no such drawbacks. Comprehension of the latter process and an appreciable progress in production of robust preparations of lipases may soon result in the replacement of chemical catalysts with enzymes in biodiesel synthesis. Engineering of enzymatic biodiesel synthesis processes requires optimization of such factors as: molar ratio of substrates (triacylglycerols: alcohol), temperature, type of organic solvent (if any) and water activity. All of them are correlated with properties of lipase preparation. This paper reports on the interplay between the crucial parameters of the lipase-catalyzed reactions carried out in non-aqueous systems and the yield of biodiesel synthesis. (author)

Szczesna Antczak, Miroslawa; Kubiak, Aneta; Antczak, Tadeusz; Bielecki, Stanislaw [Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Technical University of Lodz, Stefanowskiego 4/10, 90-924 Lodz (Poland)

2009-05-15

273

Factors affecting the plasma ion implantation of metallic samples  

International Nuclear Information System (INIS)

The UTK Plasma Science Laboratory has been engaged in a research program, under the sponsorship of the Army Research Office and the UTK Center for Materials Processing, to access the effects of plasma ion implantation on the corrosion resistance of common engineering materials. In this paper, the authors report on the research on the factors affecting the plasma ion implantation of metallic samples. The authors have considered 3 factors in the research: The geometry of the sample; the rate of implantation (or the frequency of the implantation pulses); and the method used to prepare the sample for electrochemical analysis to detect and measure any corrosion inhibition. The research indicates that samples flush with the surrounding surface of the sample holder have a better dose uniformity than ones that are raised above the sample holder. Circular samples are more uniform than a square shape. Samples raised above the surface of the sample have a less uniform dose due to the concentration of the electric field lines at edges, and at the corners of noncircular samples. Also, samples implanted at a lower pulse repetition frequency, from 1 to 20 Hz, have shown better results than ones implanted above 200 Hz. Thermal diffusion caused by heating of the sample resulting from high pulse repetition rates causes lower corrosion inhibition (pitting potential). Finally, before the sample is electrochemically tested for corrosion inhibition, it has to be passivated using nitric aci, it has to be passivated using nitric acid, which can affect the corrosion inhibition of the sample tested

274

Factors Affecting Success and Complication of Percutaneous Nephrolithotomy  

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Full Text Available Aim: Percutaneous nephrolithotomy (PNL is the first choice renal stones especially larger than 2 cm, and high success rates can be achieved after PNL. But several severe complications may be occurred. In this study, factors which affect the success rate and complications were investigated. Material and Method: Between July 2004 and August 2007, 176 patients (102 men/74 women underwent PNL operation. Because of the bilateral renal stones PNL was performed in two separate sessions of 9 patients. Percutaneous access was doing in prone position. Factors affecting the success and complication data were collected. Results: Mean age was 47.610,7 (17%uFFFD76 year, median=47. Complete success rate was detected 77.8% with the direct X-rays taken in the first postoperative day. The success rate was up to 87% after the additional post-treatment therapy. Success rates were 83.1% for complex stones and 89.4% for simple stones (p

Soner Yalç?nkaya

2012-04-01

275

Multiple weather factors affect apparent survival of European passerine birds.  

Science.gov (United States)

Weather affects the demography of animals and thus climate change will cause local changes in demographic rates. In birds numerous studies have correlated demographic factors with weather but few of those examined variation in the impacts of weather in different seasons and, in the case of migrants, in different regions. Using capture-recapture models we correlated weather with apparent survival of seven passerine bird species with different migration strategies to assess the importance of selected facets of weather throughout the year on apparent survival. Contrary to our expectations weather experienced during the breeding season did not affect apparent survival of the target species. However, measures for winter severity were associated with apparent survival of a resident species, two short-distance/partial migrants and a long-distance migrant. Apparent survival of two short distance migrants as well as two long-distance migrants was further correlated with conditions experienced during the non-breeding season in Spain. Conditions in Africa had statistically significant but relatively minor effects on the apparent survival of the two long-distance migrants but also of a presumably short-distance migrant and a short-distance/partial migrant. In general several weather effects independently explained similar amounts of variation in apparent survival for the majority of species and single factors explained only relatively low amounts of temporal variation of apparent survival. Although the directions of the effects on apparent survival mostly met our expectations and there are clear predictions for effects of future climate we caution against simple extrapolations of present conditions to predict future population dynamics. Not only did weather explains limited amounts of variation in apparent survival, but future demographics will likely be affected by changing interspecific interactions, opposing effects of weather in different seasons, and the potential for phenotypic and microevolutionary adaptations. PMID:23593131

Salewski, Volker; Hochachka, Wesley M; Fiedler, Wolfgang

2013-01-01

276

Study of the factors affecting radon diffusion through building materials  

International Nuclear Information System (INIS)

Radon appears mainly by diffusion processes from the point of origin following - decay of 226Ra in underground soil and building materials used, in the construction of floors, walls, and ceilings. The diffusion of radon in dwellings is a process determined by the radon concentration gradient across the building material structure and can be a significant contributor to indoor radon inflow. Radon can originate from the deeply buried deposit beneath homes and can migrate to the surface of earth. Radon diffusion and transport through different media is a complex process and is affected by several factors. It is well known that for building construction materials the porosity, permeability and the diffusion coefficient are the parameters, which can quantify the materials capability to hinder the flow of radon soil gas. An increase in porosity will provide more air space within the material for radon to travel, thus reducing its resistance to radon transport. The permeability of material describes its ability to act as a barrier to gas movement when a pressure gradient exists across it and is closely related to the porosity of material. The radon diffusion coefficient of a material quantifies the ability of radon gas to move through it when a concentration gradient is the driving force. This parameter depends upon the porosity and permeability of the medium. As diffusion process is the major contributor to indoor levels, therefore, the factors affecting the diff therefore, the factors affecting the diffusion process need to be kept in consideration. Keeping this in mind the experimental arrangements have been made for control study of radon diffusion through some building materials to observe the effects of different factors viz.; compaction, grain size, temperature, humidity and the mixing of these materials etc. For the present study alpha sensitive LR-115 type II solid-state nuclear track detectors (SSNTDs) have been used for the recording of alpha tracks caused by radon gas after its diffusion through the material. After exposure, the detectors were subjected to a chemical etching process. The detectors were washed, dried and after that, the tracks caused by alpha particle were counted using an optical Olympus microscope at magnification 600X. Using the track density produced the parameters like radon diffusion coefficients and diffusion lengths through these building construction materials have been calculated in each case under study. The results of present investigations provide better insight into the selection of building construction materials capable of controlling the indoor radon levels. (author)

277

Studying on the Factors Affecting the Benefit of Agricultural Research Programs  

Directory of Open Access Journals (Sweden)

Full Text Available Agricultural research and extension programs have been built in most of the world’s economies because agricultural science and technology innovation is the source to push agricultural development. Since 2004 China has increased gradually agricultural research investment, which promoted agriculture to develop rapidly. However, China’s agricultural research investment has been lagging behind that of developed countries in proportion of investment or benefit of agricultural programs. In this paper, the factors affecting the Benefit of Agricultural research programs are been studied by Principal component analysis. It showed that research management and production factors are majors factors that impacting benefit of agricultural programs. So, the government should build scientific management system of agricultural programs and improve subsidiarity production factors to ensure the benefits of agricultural research projects could be effectively.

Chunmei Wang

2014-02-01

278

Demotivating factors influencing rubber production workers  

Directory of Open Access Journals (Sweden)

Full Text Available Motivation is one of the most important factors influencing workers' productivity. An increase in workers' motivation could add more value to organizations' structure and influence the profitability, significantly. In this paper, we study different factors on demotivating workers using questionnaire consist of various questions. The questionnaire is distributed among some employees who work for rubber production units located in Esfahan, Iran. The results of this survey indicate that discrimination on annual job compensation, entrusting responsibilities and unpleasant relationship with family partner are some of the most important factors influencing employees' motivation. While financial factors play important role on increasing employees' motivation, non-financial factors are considered more important.

Mohammad Reza Iravani

2012-01-01

279

Study of factors affecting the appearance of colors under microscopes  

Science.gov (United States)

The variation of colors in microscopy systems can be quite critical for some users. To address this problem, a study is conducted to analyze how different factors such as size of the sample, intensity of the microscope's light source and the characteristics of the material like chroma and saturation can affect the color appearance through the eyepiece of the microscope. To study the changes in colors considering these factors, the spectral reflectance of 24 colors of GretagMacbeth Classic ColorChecker® and Mini ColorChecker® which are placed under a Nikon ECLIPSE MA200 microscope®2 using dark filed and bright field illuminations which result in different intensity levels, is measured using a spectroradiometer®3 which was placed in front of the eyepiece of the microscope. The results are compared with the original data from N. Ohta1. The evaluation is done by observing the shift in colors in the CIE 1931 Chromaticity Diagram and the CIELAB space, also by applying a wide set of color-difference formulas, namely: CIELAB, CMC, BFD, CIE94, CIEDE2000, DIN99d and DIN99b. Furthermore, to emphasize on the color regions in which the highest difference is observed, the authors have obtained the results from another microscope; Olympus SZX10®4, which in this case the measurement is done by mounting the spectroradiometer to the camera port of the microscope. The experiment leads to some interesting results, among which is the consistency in the highest difference observed considering different factors or how the change in saturation of the samples of the same hue can affect the results.

Zakizadeh, Roshanak; Martinez-Garcia, Juan; Raja, Kiran B.; Siakidis, Christos

2013-11-01

280

Total factor productivity and Bio Economy effects  

OpenAIRE

This paper develops a new measure of total factor productivity growth in agricultural Production which incorporates Bio Economic components effects.The new measure is called the Bio Economic-Oriented Total Factor Productivity (BTFP) index, and incorporates components of Bio Economic as liquid biofuels. BTFP measure changes in Bio Economic efficiency and can be decomposed into bio economy efficiency change (BEC), and Bio Economic technological change (BTC) components.An empirical analysis, inv...

Zuniga Gonzalez, Carlos Alberto

2012-01-01

281

Demotivating Factors Affecting EFL Learning of Iranian Seminary Students  

Directory of Open Access Journals (Sweden)

Full Text Available In the present study, an attempt has been made to determine the demotives affecting EFL learning of Iranian Islamic seminary students and also to distinguish the motivated and demotivated EFL learners in terms of their EFL learning as the major focus of this study. Fifty Iranian EFL seminary students were investigated using two validated questionnaires. First a modified version of The Attitude/Motivation Test Battery Questionnaire (AMTB originally developed by Gardner (2004 was used to determine the degree of learners’ motivation. Second a modified version of Warrington's (2005 questionnaire was administered to determine the demotivating factors from the students' point of view. Then, the IOPT (Interchange Objective Placement Test was administered to measure the general proficiency of the subjects under study. The comparison of the IOPT score means of the two groups revealed a significant difference in the results of IOPT of students with higher scores in the AMTB and those with lower scores. That is, the more motivated the students were, the higher their IOPT scores were. Furthermore, factors such as the improper method of English teaching, frequency of classes in a week, problems in understanding listening materials and lack of use of English in students’ real life were found to be the essential demotivating factors among Iranian seminary students. Having known the barriers of learning, the teachers and Islamic Propagation Office materials developers can organize their activities so that they would lead to better understanding of the lessons and improvement of teaching programs.

Omid Tabatabaei

2012-01-01

282

Factors affecting economies of scale in combined sewer systems.  

Science.gov (United States)

A generic model is introduced that represents the combined sewer infrastructure of a settlement quantitatively. A catchment area module first calculates the length and size distribution of the required sewer pipes on the basis of rain patterns, housing densities and area size. These results are fed into the sewer-cost module in order to estimate the combined sewer costs of the entire catchment area. A detailed analysis of the relevant input parameters for Swiss settlements is used to identify the influence of size on costs. The simulation results confirm that an economy of scale exists for combined sewer systems. This is the result of two main opposing cost factors: (i) increased construction costs for larger sewer systems due to larger pipes and increased rain runoff in larger settlements, and (ii) lower costs due to higher population and building densities in larger towns. In Switzerland, the more or less organically grown settlement structures and limited land availability emphasise the second factor to show an apparent economy of scale. This modelling approach proved to be a powerful tool for understanding the underlying factors affecting the cost structure for water infrastructures. PMID:20595751

Maurer, Max; Wolfram, Martin; Anja, Herlyn

2010-01-01

283

Factors affecting recombinant frequency in protoplast fusion of Streptomyces coelicolor  

International Nuclear Information System (INIS)

The optimum concentration of polyethylene glycol 1000 (PEG) for the production of recombinants through protoplast fusion in Streptomyces coelicolor was about 50% (w/v). The addition of 14% (v/v) dimethyl sulphoxide to the fusion mixture enhanced recombination frequencies, but only a sub-optimal PEG concentrations. After treatment of protoplasts with 50% PEG for 1 min, the frequency of recombinants in a multi-factor 'cross' sometimes exceeded 20% of the total progeny. The frequency of recombinants in the progeny could be significantly enhanced by ultraviolet irradiation of the parental protoplast suspensions immediately before fusion. (author)

284

Enhanced gas recovery : factors affecting gas-gas displacement efficiency  

Energy Technology Data Exchange (ETDEWEB)

This paper provided details of a joint industry project (JIP) that examined enhanced gas recovery (EGR) from low pressure volumetric reservoirs in advanced stages of exploitation. The aim of the study was to examine the ability of pressure maintenance with waste gas injection to arrest declines in gas production. Laboratory tests were conducted to identify key factors influencing the extent of mixing during gas-gas displacement within porous media. A sensitivity study was also conducted to examine the effects of grid size; molecular diffusion, dispersion on the width of the displacement front; and the effect of gas solubility in water. Both the tests and the experimental studies indicated that methane recovery increased with increased displacement pressures and displacement velocities. CO{sub 2} provided better methane recovery rates at the breakthrough point than nitrogen. The higher solubility of CO{sub 2} in connate water resulted in delayed CO{sub 2} breakthrough. This delay increased rates of natural gas production and reduced CO{sub 2} production costs. The study also demonstrated that molecular diffusion had a dominating effect on methane recovery during low velocity gas-gas displacement. It was concluded that gas-gas displacement prolongs the production life of wells and increases natural gas recovery from volumetric gas reservoirs.13 refs., 2 tabs., 11 figs.

Sim, S.S.K.; Turta, A.T.; Singhal, A.K.; Hawkins, B.F. [Alberta Research Council, Edmonton, AB (Canada)

2008-07-01

285

FACTORS AFFECTING EMPLOYEE JOB SATISFACTION OF PHARMACEUTICAL SECTOR  

Directory of Open Access Journals (Sweden)

Full Text Available The Pharmaceutical sector plays a vital role in underpinning the economic development of a country. This study attempts to evaluate job satisfaction of employees in different pharmaceutical companies. It focuses on the relative importance of job satisfaction factors and their impacts on the overall job satisfaction of employees. It also investigates the impacts of pharmaceutical type, work experience, age, and sex differences on the attitudes toward job Satisfaction. The result shows that salary, efficiency in work, fringe supervision, and co-worker relation are the most important factors contributing to job satisfaction. The overall job satisfaction of the employees in pharmaceutical sector is at the positive level. The nature of business operation, the work culture and the level of job satisfaction have undergone sea change for the pharmaceutical companies. As a business proposition initiated huge investment whereas majority of their stocks is going down bringing a high level of apprehension related to job security among its employees. This research paper highlights some of these problems and presents a picture of level of job satisfaction among employees of pharmaceutical companies. It also identifies unique issues of job satisfaction in the companies. Pharmaceuticals Companies are selected for the research because they are currently undergoing continued expansion. In order to gain competitive advantage and adapt to the dramatic changing environment, it is important for them to achieve management efficiency by increasing employee satisfaction in the organisation. Hence this research was mainly undertaken to investigate on the significance of factors such as working conditions, pay and promotion, job security, fairness, relationship with co-workers and supervisors in affecting the job satisfaction. This paper presents a comprehensive diagnosis of job satisfaction indices of pharmaceutical business, the factors causing the dissatisfaction & suggestions to improve them.

Mosammod Mahamuda Parvin

2011-10-01

286

studies on some factors affecting oxidative low density lipoprotein  

International Nuclear Information System (INIS)

the present study was performed to evaluate the effect of occupational radiation exposure on some oxidant antioxidant parameters in addition to other factors affecting oxidative stress such as age, smoking, hypertension, high sedimentation rate for this purpose. a total of 131 individuals were included in this study 81 of them working in the radiation field the age was from 27 to 63 years. the occupational time from five to more than 25 where the control groups was composed of 50 healthy volunteers who had never worked in radiology related job otherwise with the same characteristics . the parameters tested are LDL, HDL, triglycerides, cholesterol, vitamin E, SOD, MDA, hemoglobin, fasting blood sugar, urea, creatinine, and liver enzymes GOT, GPT.our results show that time of exposure to radiation shows remarkable effect beginning with decrease of vitamin E after five years exposure,extending to MDA, triglycerides and LDL which increased while SOD decreased

287

Five Factors Affecting Stability and Security in the Middle East  

Directory of Open Access Journals (Sweden)

Full Text Available There are five factors that affect security and stability in the Middle East. The first of these is the ticking bomb of sectarianism between the Sunni and Shiite strands of Islam, which have become more widespread in recent years due to the politisation of sectarian tensions and their transformation among some actors to a means to achieve political demands. Secondly, the impact of the Arab revolutions and the accompanying rise of Islamist groups through the new democratic tendencies encouraged by those revolutions. Thirdly, Iran’s behaviour through the use of both direct and indirect threats to several countries in the region. Fourthly, the existence of a fertile environment for terrorist groups in Yemen. Finally, the struggle between Arabs and Israelis over the existence of the State of Israel and the plight of the Palestinians. This article provides a clear set of linkages between these and investigates them with the intention of enhancing understanding and encouraging debate.

Yahya Alshammari

2012-12-01

288

Developing worksheet based on science process skills: Factors affecting solubility  

Directory of Open Access Journals (Sweden)

Full Text Available The purpose of this study is to develop a worksheet about the factors affecting solubility, which could be useful for the prospective science teachers (PST to remind and regain their science process skills (SPS. The pilot study of the WS was carried out with 32 first grade PST during the 2007-2008 academic year in the education department at Giresun University, Turkey. Action research methodology was used in this study. Thoughts from experts were received during the development of the worksheet. The study had some limitations in providing concrete evidence as to how the WS based on SPS effects the PST SPS, since the paper is a suggestion. For this reason, to investigate its effectiveness in a comparative manner, further research should be undertaken.

Fethiye KARSLI

2009-06-01

289

SOME ENVIRONMENTEAL FACTORS AFFECTING BROILER HOUSING IN WINTER SEASON  

Directory of Open Access Journals (Sweden)

Full Text Available The main objective of this study was to study some environmental factors affecting broiler housing in winter season. The results showed that, temperature fluctuations between house ceiling and floor ranged between 0.4 to 5.93 ºC during the first two days of age. The average house temperature reduced gradually from 29.7 to 21.3 ºC. The indoor relative humidity ranged between 43.6 to 74.3 %. Specific heating power, specific fuel consumption and heating energy requirements ranged between 3850.2 W/ºC , 0.34 kg /h. ºC and 308.9 kJ/h. kg at the first week of age to 6213.4 W/ºC , 0.36 kg /h. ºC and 19.3 kJ/h. kg at the end of the life respectively

Tarek FOUDA

2013-01-01

290

Factors Affecting Entrepreneurial Motivation of Agricultural Students at Razi University  

Directory of Open Access Journals (Sweden)

Full Text Available The main purpose of this study was to investigate factors affecting entrepreneurial motivations of agricultural students at Razi University. Statistical population of this study consisted of all agricultural undergraduate students (senior (N=186, that 164 of them were selected as research sample using proportionate stratified sampling method. The main instrument in this study was questionnaire which its validity was confirmed by the panel of experts and its reliability was established by Cronbach's alpha coefficient. Data was analyzed by SPSSWin20 software. Findings revealed that agricultural students at Razi University have the entrepreneurial motivations at moderate to high level. In addition, multiple regression analysis showed that three variables including the attitude toward entrepreneurship, the role model, and the courses of entrepreneurship education can be explaining 35.5 percent of variances of the student's entrepreneurial motivations. Results of this study have applications for planners of higher agricultural education system in order to improving the agricultural student's entrepreneurial motivations.

Nematollah Shiri

2013-09-01

291

Factors Affecting Linear Type Traits of Valdostana Cattle  

Directory of Open Access Journals (Sweden)

Full Text Available Four composite and 22 individual linear type traits, measured between 1997 and 2012 on 33,206 Aosta Red Pied (ARP and 19,551 Aosta Black Pied and Aosta Chestnut (ABP-CN strains of Valdostana cattle, were used to investigate the non-genetic factors affecting morphological evaluation. Average values for type traits ranged from 2.81 (teat placement rear view and foot angle to 3.34 (thinness for ARP, and from 2.48 (teat placement side view to 3.67 (udder depth for ABP-CN. Results from the ANOVA showed significant effect of herd-year-classifier on type traits of both ARPand ABP-CN, and of days in milk and age at calving for almost all traits, with few exceptions. The model used in this study is a useful starting point to calculate genetic parameters for Valdostana cattle.

Serena Mazza

2013-09-01

292

Potential factors affecting accumulation of unsupported 210Pb in soil  

Science.gov (United States)

Airborne 210Pb, daughter of 222Rn, is frequently used as a tracer in different studies concerning atmospheric transport, sedimentation, soil erosion, dating, etc. Concentration of 210Pb was measured in 40 soil samples collected in urban and industrial areas in order to get evidence of possible influence of some factors on accumulation of airborne 210Pb in soil. Different soil properties such as the content of organic matter, free CaCO3, and available phosphorus (P2O5) were measured to explore their possible correlation with the amount of 210Pb. Special attention was given to the correlation between 210Pb and stable lead accumulated in the soil. Several samples were taken near a battery manufacturer to check if extremely high concentrations of lead can affect the uptake of the airborne 210Pb in soil. Soil samples were also taken at different depths to investigate the penetration of lead through the soil.

Mihailovi?, Aleksandra; Vu?ini? Vasi?, Milica; Todorovi?, Nataša; Hansman, Jan; Vasin, Jovica; Krmar, Miodrag

2014-06-01

293

Factors Affecting the Adoption of Genetically Modified Animals in the Food and Pharmaceutical Chains  

Directory of Open Access Journals (Sweden)

Full Text Available The production of genetically modified (GM animals is an emerging technique that could potentially impact the livestock and pharmaceutical industries. Currently, food products derived from GM animals have not yet entered the market whilst two pharmaceutical products have. The objective of this paper is twofold: first it aims to explore the socio-economic drivers affecting the use of GM animals and, second, to review the risks and benefits from the point of view of the life sciences. A scoping study was conducted to assess research relevant to understanding the main drivers influencing the adoption of GM applications and their potential risks and benefits. Public and producers’ acceptance, public policies, human health, animal welfare, environmental impact and sustainability are considered as the main factors affecting the application of GM animal techniques in livestock and pharmaceutical chains.

Natasha I. Valeeva

2013-03-01

294

Factors affecting the sintered density of plutonium oxide  

International Nuclear Information System (INIS)

Sintering studies were carried out on PuO2 powders. The major factors affecting their sintered densities were identified. PuO2 prepared from plutonium oxalate was used in this work. Experiments with powders obtained by calcining at temperatures from 350deg C to 800deg C indicated that calcination at 600deg C was best suited for compaction and sintering and densities of 90% TD could be obtained by sintering at 1450deg C in A + 6% H2 atmosphere. Increase in compaction pressures improved the sintered densities of compacts from powders of lower temperature of calcination. There was a decrease in density when the sintering temperature was increased from 1550deg C to 1650deg C and 30 to 40% of cubic PuOsub(1.52) was present in the sintered pellets. Oxidising atmosphere was found to be beneficial in general for getting higher densities. Excess moisture in sintering atmosphere and powder storage for long periods adversely affected sinterability. (auth.)

295

Procurement engineering - the productivity factor  

International Nuclear Information System (INIS)

The industry is several years on the road to implementation of the Nuclear Management and Resources Council (NUMARC) initiatives on commercial-grade item dedication and procurement. Utilities have taken several approaches to involve engineering in the procurement process. A common result for the approaches is the additional operations and maintenance (O ampersand M) cost imposed by the added resource requirements. Procurement engineering productivity is a key element in controlling this business area. Experience shows that 400 to 500% improvements in productivity are possible with a 2-yr period. Improving the productivity of the procurement engineering function is important in today's competitive utility environment. Procurement engineering typically involves four distinct technical evaluation responsibilities along with several administrative areas. Technical evaluations include the functionally based safety classification of replacement components and parts (lacking a master parts list), the determination of dedication requirements for safety-related commercial-grade items, the preparation of a procurement specification to maintain the licensed design bases, and the equivalency evaluation of alternate items not requiring the design-change process. Administrative duties include obtaining technical review of vendor-supplied documentation, identifying obsolete parts and components, resolving material nonconformances, initiating the design-change process for replacement the design-change process for replacement items (as needed), and providing technical support to O ampersand M. Although most utilities may not perform or require all the noted activities, a large percentage will apply to each utility station

296

Major factors affecting severity of obstructive sleep apnea.  

Science.gov (United States)

Computed tomography (CT) has become a common method for evaluating obstructive sleep apnea (OSA). The aim of this study was to analyze the relationships between CT parameters and clinical parameters in OSA patients to determine major factors affecting the severity of OSA. The records of 128 consecutive snoring patients (98 males, 30 females) diagnosed with OSA were retrospectively reviewed. Polysomnography was performed for each patient. On CT scans, airway areas were measured at the level of the hard palate, the soft palate, and the base of the tongue. Polysomnographic parameters were compared by gender and age using the Mann-Whitney U test. Pearson's correlation coefficient was used to analyze relationships between variables and the AHI in each age group. The women were significantly older than the men (p < 0.01). The AHI and apnea index were significantly higher in men than in women. Stage 1 sleep and rapid eye movement sleep were more frequent in men than in women. The area at the base of the tongue was significantly smaller in women than in men (p = 0.027). In the 50-60 age group, the AHI was significantly higher in men (41.47 ± 19.67) than in women (17.14 ± 15.63) (p = 0.001). OSA severity varies with age, gender, and upper airway area. The OSA prognosis could be improved by evaluating the major factors and treating OSA patients according to epidemiological characteristics and anatomical structures. PMID:25621265

Kim, Sung Won; Kim, Boo-Young; Han, Jung Ju; Hwang, Jae Hyung; Jung, Kihwan; Kim, Min; Kim, Soo Whan

2015-03-01

297

Factors affecting job satisfaction among the radiologic technologists  

International Nuclear Information System (INIS)

Job satisfaction is very important for adequate manpower management in the medical field. To study job satisfaction among the radiologic technologists, 344 cases were reviewed in five university hospitals and one general hospital. Self-administered questionnaire was used to study their socioeconomic characteristics, working conditions, job satisfaction, and the factors affecting there job satisfaction. The results were as follows : 1. There was statistically significant difference in job satisfaction according to the their department of employment, position, and hospital characteristics. 2. The group that was satisfied with their salary had a higher job satisfaction score, whereas others who were not satisfied ranked lower. 3. The positive answering group on the ability and job recognition ranked higher score on the job satisfaction than the negative answering group. 4. The group that was in good relationship with their superiors and co-workers scored higher on job satisfaction. From the above results, the job satisfaction was high for the group with positive thinking and reply, but the intentin to change their job was low. Considering the fact that these results represent only 6 hospitals from limited arease, therefore, necessary to include more medical facilities nationwide, especially small-medium sized clinics or hospitals where the difficulty with high turnover rate of employment is expected, to study further various factors involving job satisfaction in the futuors involving job satisfaction in the future

298

Environmental factors affecting radon exhalation from a sandy soil  

Energy Technology Data Exchange (ETDEWEB)

The {sup 222}Rn transport from soil into atmosphere was analyzed to elucidate the behavior of radioactive gas including H-3 and C-14 in surface environment. To investigate the effect of various environmental factors on {sup 222}Rn exhalation from a sandy soil, measurements of {sup 222}Rn exhalation rate were continuously carried out with a closed chamber method in Tokai site, JAERI. From the correlation analysis between the {sup 222}Rn exhalation rate and environmental factors, it was indicated that volumetric water content from soil surface to about 20 cm depth affects dominantly the {sup 222}Rn exhalation. The negative correlation relationship between the rate and atmospheric pressure change was also recognized only under drying conditions. The rate increased with increase of temperature difference between atmosphere and soil. Further consideration on transport mechanisms by temperature gradient may be necessary to discuss gas transport at soil-atmosphere interface. The basic information on gas transport in soil and on gas exhalation and deposition behavior at soil-atmosphere interface was provided by this research dealing with radioactive noble gas {sup 222}Rn. (author)

Koarashi, Jun; Amano, Hikaru; Andoh, Mariko [Department of Environmental Sciences, Tokai Research Establishment, Japan Atomic Energy Research Institute, Tokai, Ibaraki (Japan)

2000-07-01

299

The exogenous factors affecting the cost efficiency of power generation  

International Nuclear Information System (INIS)

This paper employs a stochastic frontier analysis (SFA) to examine cost efficiency and scale economies in Taiwan Power Company (TPC) by using the panel data covering the period of 1995-2006. In most previous studies, the efficiency estimated by the Panel Data without testing the endogeneity may bring about a biased estimator resulting from the correlation between input and individual effect. A Hausman test is conducted in this paper to examine the endogeneity of input variables and thus an appropriate model is selected based on the test result. This study finds that the power generation executes an increasing return to scale across all the power plants based on the pooled data. We also use installed capacity, service years of the power plant, and type of fuel as explanatory variable for accounting for the estimated cost efficiency of each plant by a logistic regression model to examine the factor affecting the individual efficiency estimates. The results demonstrate that the variable of installed capacity keeps a positive relationship with cost efficiency while the factor of working years has a negative relationship.

300

Studies and Research on Friction, Friction Factor and Affecting Factors : A Review  

Directory of Open Access Journals (Sweden)

Full Text Available The friction and friction factors are very significant factors in flow through pipes, channels, heat exchangers . From the pumping cost point of view, minimum friction is desirable as it will decrease the energy loss. In the rotating components like axle-shaft arrangements, the friction and slip are important factors. In case of heat exchanger, the friction factor is important as the heat transfer depends on it. The research was also reported on effect of submerged vegetation on friction for river. The friction coefficient was a function of flow depth and velocity. Also various models were suggested by investigators to predict friction coefficient based on their research related to factors affecting the friction coefficient and the nature and gravity of their effect on friction.

Sunil J. Kulkarni

2014-10-01

301

Factors affecting outdoor exposure in winter: population-based study  

Science.gov (United States)

The extent of outdoor exposure during winter and factors affecting it were examined in a cross-sectional population study in Finland. Men and women aged 25-74 years from the National FINRISK 2002 sub-study ( n=6,591) were queried about their average weekly occupational, leisure-time and total cold exposure during the past winter. The effects of gender, age, area of residence, occupation, ambient temperature, self-rated health, physical activity and education on cold exposure were analysed. The self-reported median total cold exposure time was 7 h/week (8 h men, 6 h women),<1 h/week (2 h men, 0 h women) at work, 4 h/week (5 h men, 4 h women) during leisure time and 1 h/week (1 h men, 1.5 h women) while commuting to work. Factors associated with increased occupational cold exposure among men were: being employed in agriculture, forestry and industry/mining/construction or related occupations, being less educated and being aged 55-64 years. Factors associated with increased leisure-time cold exposure among men were: employment in industry/mining/construction or related occupations, being a pensioner or unemployed, reporting at least average health, being physically active and having college or vocational education. Among women, being a housewife, pensioner or unemployed and engaged in physical activity increased leisure-time cold exposure, and young women were more exposed than older ones. Self-rated health was positively associated with leisure time cold exposure in men and only to a minor extent in women. In conclusion, the subjects reported spending 4% of their total time under cold exposure, most of it (71%) during leisure time. Both occupational and leisure-time cold exposure is greater among men than women.

Mäkinen, Tiina M.; Raatikka, Veli-Pekka; Rytkönen, Mika; Jokelainen, Jari; Rintamäki, Hannu; Ruuhela, Reija; Näyhä, Simo; Hassi, Juhani

2006-09-01

302

Factors affecting on the particle deposition in the respiratory tract  

International Nuclear Information System (INIS)

The deposition pattern of inhaled particles in the respiratory tracts is affected by anatomical structure of the respiratory tracts and respiratory pattern of animals, which are modified by many factors as animal species, physiological and psychological conditions, age, sex, smoking drug, lung diseases, etc. In human, studies have been focused on the initial lung deposition of particles and have made it clear that the respiratory pattern, gender, and diseases may have influence on the deposition pattern. On the other hand, there was little knowledge on the initial lung deposition of particles in laboratory animals. Recently, Raabe et al. have reported the initial lung deposition of 169Yb-aluminosilicate particles in mice, rats, hamsters, guinea pigs and rabbits. The authors have also investigated the lung deposition of latex particles with different sizes and 198Au-colloid in rats whose respiratory volumes during the inhalation were monitored by body plethysmography. These experiments indicated that the deposition of inhaled particles in distal lung e.g. small bronchiolar and alveolar region, was much lower in laboratory animals than that of human. This species difference may be due to smaller diameter of respiratory tract and/or shallower breathing and higher respiratory rate of laboratory animals. The experimental animals in which respiratory diseases were induced artificially have been used to investigate the modification factors on the deposiate the modification factors on the deposition pattern of inhaled particles. As respiratory diseases, emphysema was induced in rats, hamsters, beagle dogs in some laboratories and pulmonary delayed type hypersensitivity reaction in rats was in our laboratory. The initial lung deposition of particles in these animals was consistently decreased in comparison with normals, regardless of the animal species and the type of disease. (author)

303

Factors affecting detection of burrowing owl nests during standardized surveys  

Science.gov (United States)

Identifying causes of declines and evaluating effects of management practices on persistence of local populations of burrowing owls (Athene cunicularia) requires accurate estimates of abundance and population trends. Moreover, regulatory agencies in the United States and Canada typically require surveys to detect nest burrows prior to approving developments or other activities in areas that are potentially suitable for nesting burrowing owls. In general, guidelines on timing of surveys have been lacking and surveys have been conducted at different times of day and in different stages of the nesting cycle. We used logistic regression to evaluate 7 factors that could potentially affect probability of a surveyor detecting a burrowing owl nest. We conducted 1,444 detection trials at 323 burrowing owl nests within 3 study areas in Washington and Wyoming, USA, between February and August 2000-2002. Detection probability was highest during the nestling period and increased with ambient temperature. The other 5 factors that we examined (i.e., study area, time of day, timing within the breeding season, wind speed, % cloud cover) interacted with another factor to influence detection probability. Use of call-broadcast surveys increased detection probability, even during daylight hours when we detected >95% of owls visually. Optimal timing of surveys will vary due to differences in breeding phenology and differences in nesting behavior across populations. Nevertheless, we recommend ???3 surveys per year: one that coincides with the laying and incubation period, another that coincides with the early nestling period, and a third that coincides with the late nestling period. In northern latitudes, surveys can be conducted throughout the day.

Conway, C.J.; Garcia, V.; Smith, M.D.; Hughes, K.

2008-01-01

304

Factors Affecting in-Hospital Mortality of Acute Myocardial Infarction  

Directory of Open Access Journals (Sweden)

Full Text Available "nBackground: Acute myocardial infarction (AMI is one of the most common causes of morbidity and mortality. Considering immense socioeconomic damages of growing AMI in developing countries we estimated prognostic value of major risk factors of AMI to predict probable In-hospital AMI mortality."nMethods: In a cohort survey from June 2004 to March 2006, 1798 patients hospitalized with proven AMI entered into two groups: Survived (patients discharged alive and Expired (patients expired during hospitalization due to AMI. We evaluated relationship of 17 risk factors including age, sex, smoking, opium usage, hypertension, diabetes mellitus (DM, dyslipidemia, Killip class, existence of Q wave, St segment elevation, bundle branch blocks (BBB, involved surface of heart, mean left ventricular ejection fraction (LVEF, mitral valve regurgitation (MR, and serum level of Troponin I and CKMB, with patients' survival and expiry by using chi square test, T test and multivariate logistic regression analysis. P value ? 0.05 was considered significant."nResults: There were 1629 (90.6% survived and 169 (9.4% expired patients. Factors significantly affected in-hospital mortality of AMI include: age (P< 0.001, femaleness (P< 0.001, smoking (P< 0.001, Killip class>II (P< 0.001, hy­per­tension (P= 0.036, DM (P< 0.001, bundle branch block (P< 0.001, Moderate to severe mitral regurgitation (P< 0.001, lower Mean LVEF (P< 0.001, and lower mean serum concentration of CKMB and Troponin I (P< 0.001. Mortality was significantly higher in anterolateral infarction."nConclusion: Mean age> 69.01 yr, femaleness, Killip class III & V, hypertension, DM, moderate to severe MR, anterolateral AMI, bundle branch block and higher serum concentration of CKMB & Troponin I are associated with higher In-hospital post-AMI mortality.

M Salarifar

2009-09-01

305

Factors affecting somatic cell count in dairy goats: a review  

Energy Technology Data Exchange (ETDEWEB)

Somatic cell count (SCC) in monitoring udder health has been described in numerous studies as a useful method for the diagnosis of intramammary infection (IMI), and it is considered in standards of quality and hygiene of cows milk in many countries. However, several authors have questioned the validity of SCC as a reliable IMI diagnosis tool in dairy goats. This review attempts to reflect the importance of different infectious and non-infectious factors that can modify SCC values in goat milk, and must, therefore, be taken into account when using the SCC as a tool in the improvement of udder health and the quality of milk in this species. In dairy goats, some investigations have shown that mammary bacterial infections are a major cause of increased SCC and loss of production. In goats however, the relationship between bacterial infections and SCC values is not as simple as in dairy cattle, since non-infectious factors also have a big impact on SCC. Intrinsic factors are those that depend directly on the animal: time and number of lactation (higher SCC late in lactation and in aged goats), prolificity (higher SCC in multiple births), milking time (higher SCC in evening compared to morning milking) and number of milkings per day, among others. Extrinsic factors include: milking routine (lower SCC in machine than in manual milking), seasonality and food. In addition, milk secretion in goats is mostly apocrine and therefore characterized by the presence of epithelial debris or cytoplasmic particles, which makes the use of DNA specific counters mandatory. All this information is of interest in order to correctly interpret the SCC in goat milk and to establish differential SCC standards. (Author)

Jimenez-Granda, R.; Sanchez-Rodriguez, M.; Arce, C.; Rodriguez-Estevez, V.

2014-06-01

306

Demotivating factors influencing rubber production workers  

OpenAIRE

Motivation is one of the most important factors influencing workers' productivity. An increase in workers' motivation could add more value to organizations' structure and influence the profitability, significantly. In this paper, we study different factors on demotivating workers using questionnaire consist of various questions. The questionnaire is distributed among some employees who work for rubber production units located in Esfahan, Iran. The results of this survey indicate that discrimi...

Mohammad Reza Iravani

2012-01-01

307

Human Factors in the Management of Production  

OpenAIRE

The ‘Human factor’ is a major issue when optimizing manufacturing systems. The development in recommendations on how to handle this factor in the management of production reflects the change in dominating challenges faced by production in society. Presently, industrial societies are meeting new challenges. Qualitative interviews with Danish stakeholders in the education of engineers (BA & MA) confirm the picture given in international literature. Therefore, the didactics concerning the ?...

Jensen, Per Langa?; Alting, Leo

2006-01-01

308

Main error factors, affecting inversion of EM data  

Science.gov (United States)

Inversions of EM data are complicated by a number of factors that need to be taken into account. These factors might contribute by tens of percents in data values, concealing responses from target objects, which usually contribute at the level of few percents only. We developed the exact analytical solutions of the EM wave equations that properly incorporate the contributions of the following effects: 1) A finite source size effect, where conventional dipole (zero-size) approximation brings 10-40% error compare to a real size source, needed to provide adequate signal-to-noise ratio. 2) Complex topography. A three-parametrical approach allows to keep the data misfits in 0.5% corridor while topography effect might be up to 40%. 3) Grounding shadow effect, caused by return ground currents, when Tx-line vicinity is horizontally non-uniform. By keeping survey setup within some reasonable geometrical ratios, the shadow effect comes to just one frequency-independent coefficient, which can be excluded from processing by using logarithmical derivatives. 4) Layer's wide spectral range effect. This brings to multi-layer spectral overlapping, so each frequency is affected by many layers; that requires wide spectral range processing, making the typical 'few-frequency data acquisition' non-reliable. 5) Horizontal sensitivity effect. The typical view at the target signal, reflected from a Tx-Rx mid-point is valid only for a ray approximation, reliable in a far-field zone. Unlike this, the real EM surveys usually work in near-field zone. Thus Tx-Rx mid-point does not represent the layer, so a sensitivity distribution function must be computed for each layer for the following 3D-unification process. 6) Wide range Rx-directions from mid-line Tx. Survey terrain often prevents placing Rx perpendicular to Tx-line, and even small deviations without proper corrections cause a significant inaccuracy. A radical simplification of the effect's description becomes possible after applying a special Angular Theorem. 7) Apparent conductivity spectral splitting factor. For some of the inversion approaches an averaged Earth's conductivity ?A(?) is the first step for the inversion to stratified Earth. The related spectral response from the loop-source splits such ?A onto two branches: ?A(?High) and ?A(?Low), similar to early and late resistivities in time domain processing. 8) Calibration factor. A manufacturer-based internal calibration often leads to many percents of non-controllable systematic error at low and high frequency ends, as well as temperature changes. A special approach allows an external pre-survey calibration to achieve the required accuracy.

Zuev, M. A.; Magomedov, M.; Korneev, V. A.; Goloshubin, G.; Zuev, J.; Brovman, Y.

2013-12-01

309

Analysis of Factors Affecting the Quality of an E-commerce Website Using Factor Analysis  

Directory of Open Access Journals (Sweden)

Full Text Available The purpose of this study is to identify factors which affect the quality and effectiveness of an e commerce website which also majorly affect customer satisfaction and ultimately customer retention and loyalty. This research paper examines a set of 23 variables and integrates them into 4 factors which affect the quality of a website. An online questionnaire survey was conducted to generate statistics regarding the preferences of the e-commerce website users.The 23 variables taken from customer survey are generalized into 4 major factors using exploratory factor analysis which are content, navigation, services and interface design. The research majorly consists of the responses of students between the age group of 18-25 years and considers different B2C commercial websites. Identified variables are important with respect to the current competition in the market as service of an e-commerce website also play a major role in ensuring customer satisfaction. Further research in this domain can be done for websites’ version for mobile devices.

Saurabh Mishra

2014-12-01

310

Undergraduate nursing students' perceptions regarding factors that affect math abilities  

Science.gov (United States)

A review of the nursing literature reveals many undergraduate nursing students lack proficiency with basic mathematical skills, those necessary for safe medication preparation and administration. Few studies exploring the phenomenon from the undergraduate nursing student perspective are reported in the nursing literature. The purpose of this study was to explore undergraduate nursing students’ perceptions of math abilities, factors that affect math abilities, the use of math in nursing, and the extent to which specific math skills were addressed throughout a nursing curriculum. Polya’s Model for Problem Solving and the Bloom’s Taxonomy of Educational Objectives, Affective Domain served as the theoretical background for the study. Qualitative and quantitative methods were utilized to obtain data from a purposive sample of undergraduate nursing students from a private university in western Pennsylvania. Participants were selected based on the proficiency level with math skills, as determined by a score on the Elsevier’s HESI™ Admission Assessment (A2) Exam, Math Portion. Ten students from the “Excellent” benchmark group and eleven students from the “Needing Additional Assistance or Improvement” benchmark group participated in one-on-one, semi-structured interviews, and completed a 25-item, 4-point Likert scale survey that rated confidence levels with specific math skills and the extent to which these skills were perceived to be addressed in the nursing curriculum. Responses from the two benchmark groups were compared and contrasted. Eight themes emerged from the qualitative data. Findings related to mathematical approach and confidence levels with specific math skills were determined to be statistically significant.

Pyo, Katrina A.

2011-07-01

311

Factors Affecting Bone Mineral Density in Multiple Sclerosis Patients  

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Full Text Available Background: Multiple sclerosis (MS is a demyelinating disease which can cause many disabilities for the patient. Recent data suggests that MS patients have higher risk for osteoporosis. This study was performed to investigate if the osteoporosis prevalence is higher in MS patients and to determine the possible factors affecting bone mineral density (BMD.Methods: 51 definite relapsing-remitting MS patients according to McDonald's criteria (45 females, 6 males aged between 20 and 50 years participated in this study. The control group included 407 females aged from 20 to 49 years; they were healthy and had no history of the diseases affecting bone metabolism. Femoral and lumbar BMD were measured by Dual Energy X-ray Absorptiometry (DXA. The disability of MS patients was evaluated by Expanded Disability Status Scale (EDSS. The patient’s quality of life was evaluated by the validated Persian version of multiple sclerosis impact scale (MSIS-29.Results: Patients’ mean age was 36 ± 3.3 years and their mean disease duration was 8.7 ± 1.7 years. The mean EDSS score and the mean body mass index (BMI of the patients were 3 ± 0.9 and 23.5 ± 2.3 kg/m2, respectively. 29% of the patients had never been treated by ß-interferon and 6% of them had not received glucocorticoids (GCs pulses since their MS had been diagnosed. 26% of the patients had a history of fracture.18% of our patients were osteoporotic and 43% of them were osteopenic. Femoral BMD was significantly lower among MS patients than age matched controls (P < 0.001, but lumbar BMD showed no difference. There was no correlation between administration of GCs pulses, interferon and BMD; however, we found a significant correlation between EDSS score, quality of life (QoL, disease duration and BMD of both site.Conclusion: As a result of this study, bone loss inevitably occurs in MS patients. The major factor of BMD loss is immobility. Osteoporosis should be managed as part of MS patients’ treatment protocols.

Azin Ayatollahi

2013-01-01

312

Factors affecting Archaeal Lipid Compositions of the Sulfolobus Species  

Science.gov (United States)

Temperature is the best known variable affecting the distribution of the archaeal glycerol dibiphytanyl glycerol tetraethers (GDGTs) in marine and freshwater systems. Other variables such as pH, ionic strength, or bicarbonate concentration may also affect archaeal GDGTs in terrestrial systems. Studies of pure cultures can help us pinpoint the specific effects these variables may have on archaeal lipid distribution in natural environments. In this study, three Sulfolobus species (HG4, HB5-2, HB9-6) isolated from Tengchong hot springs (pH 2-3, temperature 73-90°C) in China were used to investigate the effects of temperature, pH, substrate, and type of strain on the composition of GDGTs. Results showed that increase in temperature had negative effects on the relative contents of GDGT-0 (no cyclopentyl rings), GDGT-1 (one cyclopentyl ring), GDGT-2 and GDGT-3 but positive effects on GDGT-4, GDGT-4', GDGT-5 and GDGT-5'. Increase in pH, on the other hand, had negative effects on GDGT-0, GDGT-1, GDGT-4', GDGT-5 and GDGT-5', and positive effects on GDGT-3 and GDGT-4. GDGT-2 remained relatively constant with changing pH. When the HG4 was grown on different substrates, GDGT-5 was five time more abundant in sucrose-grown cultures than in yeast extract- or sulfur- grown cultures, suggesting that carbohydrates may stimulate the production of GDGT-5. For all three species, the ring index (average number of rings) of GDGTs correlated positively with incubation temperature. In HG4, ring index was much lower at optimal pH (3.5) than at other pH values. Ring index of HB5-2 or HB9-6 is higher than that of HG4, suggesting that speciation may affect the degree of cyclization of GDGT of the Sulfolobus. These results indicate that individual archaeal lipids respond differently to changes in environmental variables, which may be also species specific.

He, L.; Han, J.; Wei, Y.; Lin, L.; Wei, Y.; Zhang, C.

2010-12-01

313

Analysis of Factors Affecting Positron Emission Mammography (PEM) Image Formation  

International Nuclear Information System (INIS)

Image reconstruction for positron emission mammography (PEM) with the breast positioned between two parallel, planar detectors is usually performed by backprojection to image planes. Three important factors affecting PEM image reconstruction by backprojection are investigated: (1) image uniformity (flood) corrections, (2) image sampling (pixel size) and (3) count allocation methods. An analytic expression for uniformity correction is developed that incorporates factors for spatial-dependent detector sensitivity and geometric effects from acceptance angle limits on coincidence events. There is good agreement between experimental floods from a PEM system with a pixellated detector and numerical simulations. The analytic uniformity corrections are successfully applied to image reconstruction of compressed breast phantoms and reduce the necessity for flood scans at different image planes. Experimental and simulated compressed breast phantom studies show that lesion contrast is improved when the image pixel size is half of, rather than equal to, the detector pixel size, though this occurs at the expense of some additional image noise. In PEM reconstruction counts usually are allocated to the pixel in the image plane intersected by the line of response (LOR) between the centers of the detection pixels. An alternate count allocation method is investigated that distributes counts to image pixels in proportion to the area of the tube of response (TOR) connecting the detection f response (TOR) connecting the detection pixels that they overlay in the image plane. This TOR method eliminates some image artifacts that occur with the LOR method and increases tumor signal-to-noise ratios at the expense of a slight decrease in tumor contrast. Analysis of image uniformity, image sampling and count allocation methods in PEM image reconstruction points to ways of improving image formation. Further work is required to optimize image reconstruction parameters for particular detection or quantitation tasks

314

Factors affecting anatomical changes after endovascular abdominal aortic aneurysm repair.  

Science.gov (United States)

Background?The primary goal of endovascular aneurysm repair (EVAR) is to prevent death from aneurysm rupture. Regression of aortic sac size is believed to be a marker for success after EVAR. This study analyzes the changes in aneurysm sac size and the factors affecting sac regression after EVAR. Patients and Methods?We retrospectively reviewed 121 patients with abdominal aortic aneurysm (AAA) who underwent elective treatment with EVAR at our institution from January 2005 to December 2011. In this study, 17 of the 121 patients were excluded due to loss during follow-up or for not having undergone a postoperative computed tomographic (CT) scan, and 3 patients were excluded due to an isolated iliac artery aneurysm. CT scans were scheduled at months 1, 6, and 12, and annually thereafter. Aneurysm size was defined by the minor axis on the largest axial cut of the aneurysm on a two-dimensional CT scan. Sac regression was defined as a reduction in the diameter of more than 5 mm. Results?Sac regression was observed during follow-up in 39 of the 101 patients. There was 1 regression in 87 patients (1%) at 1?month, 18 in 62 patients at 6 months (29%), 26 regressions in 44 patients (59%) at 12 months, and 18 regressions in 34 patients (53%) at 24 months. After multivariate analysis, the absence of endoleaks was the only factor associated with sac regression (hazard ratio, 3.620; confidence interval, 1.692-7.747; p?=?0.001). Conclusion?Sac regression over 5 mm is associated with current or previous endoleaks after EVAR. Continued surveillance is necessary in all patients after EVAR to prevent late complications. PMID:25191763

Park, Keun-Myoung; Kim, Dong-Ik; Kim, Young-Wook; Do, Young-Soo; Park, Hong Suk; Park, Kwang Bo

2015-03-01

315

Analysis of Factors Affecting Use of Bumble Bees for the Pollination in Glasshouse Tomatoes Growing  

Directory of Open Access Journals (Sweden)

Full Text Available In the study, a binary logit model was employed to determine factors affecting the use of bumble bees for the pollination in glasshouse tomatoes production in Antalya province of Turkey. Tomatoes yield, education level of farmer, experience in greenhouse vegetable production, knowledge level of farmers about bumble bee using, adoption level of new other production technologies, specialization and level of hired labor cost were fitted in the model as explanatory variables. The results indicated that yield, knowledge level of farmers about bumble bee using, adoption level of new production technologies are statistically significant, while other variables are not. In the model, only level of hired labor cost variable is negatively and other variables are positively associated with the probability of bumble bee adoption.

I. Yilmaz

2007-01-01

316

Analysis of factors affecting the development of food crop varieties bred by mutation method in China  

International Nuclear Information System (INIS)

The research developed a production function on crop varieties developed by mutation method in order to explore factors affecting the development of new varieties. It is found that the research investment, human capital and radiation facilities were the most important factors that affected the development and cultivation area of new varieties through the mutation method. It is concluded that not all institutions involved in the breeding activities using mutation method must have radiation facilities and the national government only needed to invest in those key research institutes, which had strong research capacities. The saved research budgets can be used in the entrusting the institutes that have stronger research capacities with irradiating more breeding materials developed by the institutes that have weak research capacities, by which more opportunities to breed better varieties can be created

317

Factors affecting development of a motion imagery quality metric  

Science.gov (United States)

The motion imagery community would benefit from the availability of standard measures for assessing image interpretability. The National Imagery Interpretability Rating Scale (NIIRS) has served as a community standard for still imagery, but no comparable scale exists for motion imagery. Several considerations unique to motion imagery indicate that the standard methodology employed in the past for NIIRS development may not be applicable or, at a minimum, require modifications. Traditional methods for NIIRS development rely on a close linkage between perceived image quality, as captured by specific image interpretation tasks, and the sensor parameters associated with image acquisition. The dynamic nature of motion imagery suggests that this type of linkage may not exist or may be modulated by other factors. An initial study was conducted to understand the effects target motion, camera motion, and scene complexity have on perceived image interpretability for motion imagery. This paper summarizes the findings from this evaluation. In addition, several issues emerged that require further investigation: - The effect of frame rate on the perceived interpretability of motion imagery - Interactions between color and target motion which could affect perceived interpretability - The relationships among resolution, viewing geometry, and image interpretability - The ability of an analyst to satisfy specific image exploitation tasks relative to different types of motion imagery clips Plans are being developed to address each of these issues through direct evaluations. This paper discusses each of these concerns, presents the plans for evaluations, and explores the implications for development of a motion imagery quality metric.

Irvine, John M.; Fenimore, Charles; Cannon, David; Roberts, John; Israel, Steven A.; Simon, Larry; Watts, Charles; Miller, James D.; Aviles, Ana I.; Tighe, Paul F.; Behrens, Richard J.; Haverkamp, Donna

2005-05-01

318

Factors affecting return to driving post-stroke.  

LENUS (Irish Health Repository)

BACKGROUND: Stroke can affect a person\\'s ability to drive, an important means of transportation in the developed world. AIMS: To determine percentage of patients and factors associated with return to driving post-stroke in a service with emphasis on driver assessment. METHODS: Retrospective study of patients discharged from the Stroke Service of our 470-bed teaching hospital from 1998 to 2002. RESULTS: Of 72 drivers pre-stroke, 54% recalled a driving assessment and 68% returned to driving. Younger patients (58.6 +\\/- 12.0 vs. 66.5 +\\/- 10.5, p = 0.008) with lower Modified Rankin Score (median 1 vs. 2, p = 0.0001) and normal cognition (55 vs. 43%, p = 0.45) were more likely to resume driving. More patients who were assessed returned to driving than those who were not (74 vs. 61%, p = 0.31). CONCLUSIONS: A relatively high level of return to driving can be achieved post-stroke with a pro-active approach to driver assessment and rehabilitation. A structured assessment and referral programme should be offered where appropriate.

Tan, K M

2012-02-01

319

Factors affecting the survival of frozen-thawed mouse spermatozoa.  

Science.gov (United States)

Mouse epididymal spermatozoa were frozen in solutions containing various compounds with different molecular weights, and the factors affecting the postthawing survival were examined. Monosaccharides (glucose, galactose) had almost no protective effect regardless of the concentration and the temperature of exposure. On the other hand, disaccharides (sucrose, trehalose) and trisaccharides (raffinose, melezitose) resulted in higher survival rates, especially at a concentration of around 0.35 mol/kg H(2)O (0.381-0.412 Osm/kg). Macromolecules, such as PVP10, Ficoll 70, bovine serum albumin, and skim milk had almost no effect, but compounds with a molecular weight of about 800, such as metrizamide and Nycodenz, had some protective effect. When a raffinose solution was supplemented with 10% metrizamide, resulting in an osmolality of approximately 0.400 Osm/kg, a high survival rate was obtained. Solutions at about 0.400 Osm/kg containing trehalose alone, trehalose + metrizamide, raffinose alone, and raffinose + metrizamide, were all effective for sperm freezing; frozen-thawed sperm could fertilize oocytes, and the resultant embryos could develop to live young after transfer. For freezing mouse spermatozoa, aqueous solutions at approximately 0.400 Osm/kg containing a disaccharide or a trisaccharide seem to be effective. PMID:10860623

An, T Z; Iwakiri, M; Edashige, K; Sakurai, T; Kasai, M

2000-05-01

320

THEORIES AND FACTORS AFFECTING MUCOADHESIVE DRUG DELIVERY SYSTEMS: A REVIEW  

Directory of Open Access Journals (Sweden)

Full Text Available Bioadhesion is an interfacial phenomenon in which two materials, at least one of which is biological, are held together by means of interfacial forces. When the associated biological system is mucous, it is called mucoadhesion. This property of certain polymeric systems have got place in the drug delivery research in order to prolong contact time in the various mucosal route of drug administration, as the ability to maintain a delivery system at a particular location for an extended period of time has a great appeal for both local action as well as systemic drug bioavailability. A complete and comprehensive theory that can predict adhesion based on the chemical and/or physical nature of a polymer is not yet available. Several theories have been proposed to explain the fundamental mechanisms of adhesion such as glues, adhesives, and paints, have been adopted to study the mucoadhesion. Mucoadhesion is a complex process and numerous theories have been presented to explain the mechanisms involved. These theories include mechanical-interlocking, electrostatic, diffusion–interpenetration, adsorption and fracture processes. They are Electronic theory, Adsorption theory, Wetting theory, Diffusion theory, Fracture theory. The objective of the study is to explain the different mechanisms involved in mucoadhesion and various factors affecting mucoadhesion.

Alexander Amit

2011-04-01

321

Chordoma: review of clinico radiological features and factors affecting survival  

International Nuclear Information System (INIS)

This study reviews the clinico radiological features of cranial and sacrospinal chordomas and identifies factors affecting survival. Nineteen patients seen between January 1980 and December 2000 with histopathological diagnosis of chordomas were retrospectively reviewed with reference to clinical presentation, imaging features, treatment modalities and post-therapy status. Eight had tumours in the skull base while 11 patients had spinal and sacro-coccygeal lesions. Surgical resection was performed in 16 patients whose subsequent natural history was used to identify clinical indicators that may influence survival. Completeness of resection, age, gender and postoperative irradiation were subjected to analysis using the Cox proportional hazard models. Kaplan-Meir survival curves illustrate the survival distributions. Diplopia and facial pain are prime clinical presentations in cranial lesions, while extremity weakness and a sacrogluteal mass are common complaints in the sacrospinal group. Lesional calcifications are present in 40% while an osteolytic soft tissue mass is detectable by CT in all cases. Heterogeneous signals and internal septations on T2-weighted MRI are predominant features. In sacrospinal tumours, complete excision with adjuvant radiotherapy achieves the best results with a disease-free survival of more than 5 years. The clinical and imaging findings in this study are in accordance with those of other series. Except for complete surgical excisieries. Except for complete surgical excision followed by radiotherapy in the subset of patients with sacrospinal tumours, none of the other clinical indicators show a statistical significant influence on survival. Copyright (2001) Blackwell Science Pty Ltd

322

Factors Affecting the Disposition Effect in Tehran Stock Market  

Directory of Open Access Journals (Sweden)

Full Text Available Given the significance and perceived inevitability of disposition effect and its impact on investment decisions, we investigate factors affecting the disposition effect in the Tehran Stock Exchange. Four hypotheses were developed and the data used in the study were collected through availability sampling. One-sample t-test, two-sample t-test and one-way ANOVA were run to analyze the data while Pearson correlation test and multiple regressions were used to assess relationships among variables in question. The results of the analyses indicate that overconfidence and mental accounting were not significantly correlated with disposition effect. Regret aversion had a positive relationship with disposition effect while self control was negatively associated. It was also observed that there was a negative relationship between participants’ level of education and their disposition effect indicating that the higher the level of education, the less the rate of disposition effect. Furthermore, the results of the study show that males enjoy a higher level of overconfidence than females, and 20 to 30 year-old age groups displayed much overconfidence than other age groups.

Reza Tehrani

2012-02-01

323

Antimutagenesis by factors affecting DNA repair in bacteria.  

Science.gov (United States)

The term 'antimutagen' was originally used to describe an agent that reduces the apparent yield of spontaneous and/or induced mutations, regardless of the mechanisms involved. The 'antimutagens' include 'desmutagens' and 'bio-antimutagens'. In this article, our attention was focused on the bio-antimutagens affecting DNA repair in bacteria. Cobaltous chloride reduced the frequency of mutations in Escherichia coli induced by MNNG. The possibility that metal compound inhibits the growth of mutagen-treated cells was examined. The results clearly showed that the antimutagen surely reduces the mutation rate. The target of cobaltous chloride was found to be cellular factors including Rec A. Vanillin and cinnamaldehyde had strong antimutagenic activities against UV, 4NQO and AF-2. They stimulated Rec A-dependent recombination repair functions in the mutagen-treated cells. Among plant materials, tannins possess antimutagenic activity against UV-induced mutations in E. coli. It has been found that tannic acid stimulates the excision repair encoded by the uvrA gene thereby reducing the yield of mutants. Substances which are antimutagenic in bacterial systems also had antimutagenic activity in cultured mammalian cell systems. Vanillin reduced the frequency of mutagen-induced chromosomal aberrations. PMID:3057369

Kuroda, Y; Inoue, T

1988-12-01

324

Some factors affecting the in vitro culture of banana  

International Nuclear Information System (INIS)

Factors affecting in vitro regeneration of shoots in shoot tip explant cultures of banana cultivar 'Basrai', such as solid and liquid media, growth regulators, vitamins, and antioxidants were studied. Three-quarters strength of MS liquid medium supplemented with 17.75 micro m 6-benzyladenine (BA), 11.42 micro M indole-3-acetic acid (IAA) and 205 micro M adenine sulphate induced the formation of mean number of 12.3 shoots, with the mean length of 3.0 cm, after three weeks of culture. Maximum shoot multiplication (14.33) occurred in liquid medium containing 22.19 micro M BA. Addition of 2.0% activated charcoal (AC) to the liquid medium improved quality of the regenerated plants with expanded and glossy leaves, though the number of shoots was reduced (13.66). Profuse formation of roots was characteristically induced by AC. Addition of citric acid (CA) to the medium caused decline in morphogenetic expression of the cultures. (author)

325

Principal Factors Affecting China Zero Environmental Risk: Behavior and Area Angle  

Directory of Open Access Journals (Sweden)

Full Text Available The purpose of this study is to find principal factors affecting CZER (China Zero Environmental Risk from behavior and area angle and the related advice can help people to solve environmental problems. So, in this study the factors’ selection, contribution and sequence by correlation, regression and principal component analysis, etc. were studied from behavior and area angle, which is different from the present work only studying individual behavior or individual area. To make sure this study applicable, data were collected by case study and such norms as KMO (KMO refers to Kaiser-Meyer-Olkin Measure of Sampling Adequacy, etc., were abided by. By this study, principal factors from behavior angle can be ordered by contribution as follows: Production action, market management, living waste disposal, public management, living action and production waste disposal. Principal factors from area angle can be ordered by contribution as follows: Neimenggu, Jiangxi, Shanghai, Qinghai, Zhejiang and Shaanxi. And the related advice is as follows: First, strict surveillance on production of waste from such behaviors as enterprise production and human living action by market management and public management, etc. Secondly, great encouragement to technological innovations friendly with the environment in waste disposal. And thirdly different emphasis of management in different areas, such as natural resources deterioration in Neimenggu and Qinghai, food quality and farming pollution in Jiangxi, industry pollution and water pollution in Shanghai and Zhejiang and pollution of resources excavation and refinement in Shaanxi, etc.

Changqing Liu

2013-01-01

326

Total Factor Productivity Growth when Factors of Production Generate Environmental Externalities  

OpenAIRE

Total factor productivity growth (TFPG) has been traditionally associated with technological change. We show that when a factor of production, such as energy, generates an environmental externality in the form of CO2 emissions which is not internalized because of lack of environmental policy, then TFPG estimates could be biased. This is because the contribution of environment as a factor of production is not accounted for in the growth accounting framework. Empirical estimates confirm this hy...

Vouvaki, Dimitra; Xepapadeas, Anastasios

2008-01-01

327

Factors affecting performance of Nili-Ravi buffaloes in Pakistan.  

Science.gov (United States)

Effects of herd, year, age, season, and lactation length on milk yield and reproductive efficiency for the Nili-Ravi breed of buffalo were determined by analysis of variance of 5,716 lactation records from two herds in Pakistan. Herds differed in all traits. Herd average milk yields were 1,702 and 2,064 kg. Year, season, herd, parity number, days in milk, days open, age, and sire all influenced milk yield. Herd, year, season, and parity number also had significant effects on days open and calving interval. Month of calving was important for time until return to estrus. Percentages of variance in milk yield attributed to herd, year, sire, cow, and residual were 20.3, 11.4, 4.3, 17.0, and 47.0. Classification of lactation length (greater than 60, greater than 250, or at least 305 days) markedly influenced the sire component of variance suggesting some interdependence of milk yield and lactation length. Total variance for milk yield was 466,911 kg2. Within herd heritability for milk yield was .25, and repeatability was low (.31). Predicted breeding values for sires for 250 to 305-day milk ranged from -172 kg to +260. Cows in Herd 1 completed 5.58 lactations with an average herd life of 12.3 yr; Herd 2 cows completed 4.52 lactations with culling at 10.6 yr. Frequency of termination of lactations because of mastitis, reproductive problems, or health was similar to frequencies for cattle. Factors affecting milk yield in buffaloes are similar to those of cattle. PMID:6841754

Cady, R A; Shah, S K; Schermerhorn, E C; McDowell, R E

1983-03-01

328

Family planning attitudes of women and affecting factors  

Directory of Open Access Journals (Sweden)

Full Text Available Objective: This descriptive research was conducted to determine the attitudes of women towards family planning and the factors affecting these attitudes. Material and Methods: Universe of the study has been composed of women who are married and older than 15 years and living in Ankara Kale district. 300 women were included. Kale district is a low socioeconomical slum area of the capital city of Turkey. Questionnaire and Family Planning Attitude Scale were used to collect data. Results: 38% of the women were in the 30-39 years age group and 66.7% of them were graduates of primary school. 73.3% of the women had information about some contraceptive method and 53% of them had used an effective method. Mean score taken from the Family Planning Attitude Scale was 120.11±13.8. The scores obtained from the scale were significantly higher in the women who were graduates of elementary school, whose husbands were graduates from high school and higher, who had heard about any contraceptive method and had been using some method and who had had 1-3 pregnancies (p0.05. Conclusion: It was found that the attitudes of the women towards family planning were at a good level, nearly half of the women were using an effective method, and the level of education, number of pregnancies, unwillingness to have another child in the future, having information about contraceptive methods and using some contraceptive method had influenced family planning attitudes. In order to turn this attitude into practice with high rate, family planning education programs and consultancy services must be planned and implemented.

Sultan Ayaz

2009-09-01

329

Factors affecting Citrus tree isozyme-gene expression.  

Science.gov (United States)

Ten enzymatic systems of Citrus species and cultivars have been evaluated for identification purposes and for genetic variability studies. The following factors that could affect their expression were studied: season of sampling, location, rootstock, position of the branch, infection, and age of the tree. Differences involving the presence-absence of the Cu/Zn SOD within the same tree were found. This difference is mainly related to the position of the leaf relative to the sunlight. No change was observed at any of the ten enzymatic systems assayed regarding the location, the rootstock, the growing condition, the season, or the infection with most virus and virus-like pathogens. Viroids induced noticeable changes on 6PG and PRXa zymograms in C. medica. A new peroxidase (not present in healthy plants) was detected that could be related to appearance of symptoms. This may induce errors when trees without sanitary control are characterized by this enzymatic system. On the other hand, it provides a new possibility for studying the plant response to the presence of viroids. An effect of age, from 3 months up to 12 years, was observed on citrange Troyer and mandarin Cleopatra PRX, MDH and 6PG patterns. An important change occurs around the first year, most likely related to the end of the seedling stage. This is followed by a long transition phase, the end of which (around 9 years later) coincides with a change in the PRX pattern. These age-related changes seem to involve post-translational modifications of pre-existing isozymes. PMID:24172935

Asíns, M J; Herrero, R; Navarro, L

1995-05-01

330

Factors affecting the cerebral network in brain tumor patients.  

Science.gov (United States)

Brain functions, including cognitive functions, are frequently disturbed in brain tumor patients. These disturbances may result from the tumor itself, but also from the treatment directed against the tumor. Surgery, radiotherapy and chemotherapy all may affect cerebral functioning, both in a positive as well as in a negative way. Apart from the anti-tumor treatment, glioma patients often receive glucocorticoids and anti-epileptic drugs, which both also have influence on brain functioning. The effect of a brain tumor on cerebral functioning is often more global than should be expected on the basis of the local character of the disease, and this is thought to be a consequence of disturbance of the cerebral network as a whole. Any network, whether it be a neural, a social or an electronic network, can be described in parameters assessing the topological characteristics of that particular network. Repeated assessment of neural network characteristics in brain tumor patients during their disease course enables study of the dynamics of neural networks and provides more insight into the plasticity of the diseased brain. Functional MRI, electroencephalography and especially magnetoencephalography are used to measure brain function and the signals that are being registered with these techniques can be analyzed with respect to network characteristics such as "synchronization" and "clustering". Evidence accumulates that loss of optimal neural network architecture negatively impacts complex cerebral functioning and also decreases the threshold to develop epileptic seizures. Future research should be focused on both plasticity of neural networks and the factors that have impact on that plasticity as well as the possible role of assessment of neural network characteristics in the determination of cerebral function during the disease course. PMID:22331519

Heimans, Jan J; Reijneveld, Jaap C

2012-06-01

331

Defense Acquisitions: Factors Affecting Outcomes of Advanced Concept Technology Demonstrations  

Science.gov (United States)

Since the ACTD (Advanced Concept Technology Demonstrations) program was started in 1994, a wide range of products have been tested by technology experts and military operators in realistic settings-from unmanned aerial vehicles, to friend-or-foe detection systems, to biological agent detection systems, to advanced simulation technology designed to enhance joint training. Many of these have successfully delivered new technologies to users. Though the majority of the projects that were examined, transitioned technologies to users, there are factors that hamper the ACTD process. For example: Technology has been too immature to be tested in a realistic setting, leading to cancellation of the demonstration. Military services and defense agencies have been reluctant to fund acquisition of ACTD-proven technologies, especially those focusing on joint requirements, because of competing priorities. ACTD's military utility may not have been assessed consistently. Some of the barriers identified can be addressed through efforts DOD (Department of Defense) now has underway, including an evaluation of how the ACTD process can be improved; adoption of criteria to be used to ensure technology is sufficiently mature; and placing of more attention on the end phase of the ACTD process. Other barriers, however, will be much more difficult to address in view of cultural resistance to joint initiatives and the requirements of DOD's planning and funding process.

2002-12-01

332

Factors affecting nuclear research reactor utilization across countries  

International Nuclear Information System (INIS)

In view of the worldwide declining trend of research reactor utilization and the fact that many reactors in developing countries are under-utilised, a question naturally arises as to whether the investment in a research reactor is justifiable. Statistical analyses were applied to reveal relationships between the status of reactor utilization and socio-economic conditions among countries, that may provide a guidance for reactor planning and cost benefit assessment. The reactor power has significant regression relationships with size indicators such as GNP, electricity consumption and R and D expenditure. Concerning the effectiveness of investment in research reactors, the number of reactor operation days per year only weakly correlates with electricity consumption and R and D expenditure, implying that there are controlling factors specific of each group of countries. In the case of less developed countries, the low customer demands on reactor operation may be associated with the failure in achieving quality assurance for the reactor products and services, inadequate investment in the infrastructure for reactor exploitation, the shortage of R and D funding and well trained manpower and the lack of measures to get the scientific community involved in the application of nuclear techniques. (author)

333

Influential Factors in Long-term Product Service System Contracts  

OpenAIRE

This dissertation presents different aspects of long-term contract for product service system (PSS); also different issues that companies are dealt for implementation of PSS. The study consists of literature review for understanding factors which can affect long-term PSS contracts. Different generic categories of green business models which are used in PSS contracts have been addressed and in addition, various models of contracts for PSS in industries have been identified too. The important f...

Hosseini Taklimi, Seyed Reza

2011-01-01

334

Production of Tuber-Inducing Factor  

Science.gov (United States)

A process for making a substance that regulates the growth of potatoes and some other economically important plants has been developed. The process also yields an economically important by-product: potatoes. The particular growth-regulating substance, denoted tuber-inducing factor (TIF), is made naturally by, and acts naturally on, potato plants. The primary effects of TIF on potato plants are reducing the lengths of the main shoots, reducing the numbers of nodes on the main stems, reducing the total biomass, accelerating the initiation of potatoes, and increasing the edible fraction (potatoes) of the overall biomass. To some extent, these effects of TIF can override environmental effects that typically inhibit the formation of tubers. TIF can be used in the potato industry to reduce growth time and increase harvest efficiency. Other plants that have been observed to be affected by TIF include tomatoes, peppers, radishes, eggplants, marigolds, and morning glories. In the present process, potatoes are grown with their roots and stolons immersed in a nutrient solution in a recirculating hydroponic system. From time to time, a nutrient replenishment solution is added to the recirculating nutrient solution to maintain the required nutrient concentration, water is added to replace water lost from the recirculating solution through transpiration, and an acid or base is added, as needed, to maintain the recirculating solution at a desired pH level. The growing potato plants secrete TIF into the recirculating solution. The concentration of TIF in the solution gradually increases to a range in which the TIF regulates the growth of the plants.

Stutte, Gary W.; Yorio, Neil C.

2006-01-01

335

Factorization and resummation for color octet production  

OpenAIRE

We discuss the production of heavy colored paricles at the Large Hadron Collider (LHC) through gluon-gluon fusion process. A factorization theorem is obtained for this process using Soft Collinear Effective Theory. Our factorization theorem does not depend on any assumptions regarding the physics above the mass of the heavy colored particle. In this sense it is universal. The matching coefficient at the heavy particle mass scale depends however on the unkown physics above th...

Idilbi, Ahmad; Kim, Chul

2009-01-01

336

Development of Food Retailing and Factors Affecting the Competition in Food Retailing  

Directory of Open Access Journals (Sweden)

Full Text Available Retailing is a dynamic and complex sector that offers wide range of products and services to consumers. This sector which includes different types of enterprises, has an important position within the supply chain. Food retailing has also a big potential within retailing sector. On the other hand, an intensive competition exists in food retailing. Taking place in the competitive market, food retailers attempt to gain a competitive advantage against their rivals with their geographic location, product selection and type, offered service quality and pricing alternatives. Additionally, food retailers also incline to develop their own branded products. The purpose of this study is to examine the development of food retailing sector, competitive structure and the main factors affecting this structure.

Serkan Kilic

2010-04-01

337

Factors Affecting the Adoption of the Organic Dried Fig Agriculture System in Turkey  

Directory of Open Access Journals (Sweden)

Full Text Available In this study the factors affecting the adoption of organic dried fig agriculture in Turkey were investigated. These factors were divided into three groups, these being social, structural and intellectual factors. The effect of these factors was established using the probit analysis method. It was found that, of the social factors, the education status, age and fig-growing experience of producers were important parameters in the adoption of organic dried fig agriculture. Meanwhile, among the structural/economic factors fig production amount stands out as an important parameter. As for intellectual factors, it was observed that the extent to which producers were conversant with subvention policies, kept up to date with dried fig export prices and/or were knowledgeable an the subject of aflatoxin were important parameters. As a result, in the diffusion of organic dried fig agriculture in Turkey education project about organic farming need to be increased. It was vital that producers be made aware of sustainable farming practices, quality and standards, export demand and expectations and the European Union and its practices. On the other hand, it is very important that producer be provided with financial support in the transition to organic farming and be given guarantees regarding the marketing of their produce.

Ferruh Isin

2007-01-01

338

FACTORS AFFECTING THE PHOTOCHEMICAL TREATMENT OF HAZARDOUS WASTE  

Science.gov (United States)

The photochemical treatment of hazardous waste can be optimized by taking into account several factors that influence the rates of photochemical reactions. Physical factors that facilitate photochemical treatment include: (1) maximizing the irradiated surface to volume ratio of t...

339

FACTORS AFFECTING THE PHOTOCHEMICAL TREATMENT OF HAZARDOUS WASTE (JOURNAL VERSION)  

Science.gov (United States)

The photochemical treatment of hazardous waste can be optimized by taking into account various factors that influence the rates of photochemical reactions. Physical factors that facilitate photochemical treatment include: (1) maximizing the irradiated surface to volume ratio of t...

340

To Invest Or Not Invest? : Factors affecting IT investment decisions  

OpenAIRE

  Introduction Many studies indicate that there are numerous factors that promote or hamper the adoption of IT applications and are a prime concern for many researchers and practitioners (Abrahamson, 1991). Two main factors which need to be examined closely when making decisions about IT investments are the internal and external factors. Since these factors play a great role in decision making of IT investments, it is imperative to study their impact on the strategic planning because this fo...

Tarabay, Raymond; Eigbire, Raphael

2009-01-01

341

Factors affecting gonadal function after bone marrow transplantation during childhood.  

Science.gov (United States)

Conditioning for bone marrow transplantation (BMT) may alter viability of germ cells and production of gonadal hormones. We analyzed the risk factors for gonadal failure after 12 Gy total body irradiation (TBI) given as six fractions (n = 31, group 1), 10 Gy (one dose) TBI (n = 20, group 2), 6 Gy (one dose) total lymphoid irradiation (TLI, n = 17, group 3) and chemotherapy alone (n = 7, group 4), given at 7.7 +/- 0.4 (0.6-13.6) years. Among the 34 girls, seven (20.6%) had normal ovarian function with regular spontaneous menstruation and normal plasma follicle-stimulating (FSH) and luteinizing (LH) hormones, five (14.7%) had partial ovarian failure with regular menstruation but increased FSH and/or LH, and 22 (64.7%) had complete ovarian failure. The 24 girls with chronological and bone ages >13 years included similar percentages, with increased FSH or LH in all four groups. There was a positive correlation between age at BMT and FSH (r = 0.54, P Leydig cell failure (three complete and seven partial). The 18 boys with chronological and bone ages >15 years included similar percentages with increased FSH or LH in groups 1 to 3, and testicular volume was significantly lower in group 2 than in group 3 (P = 0.008). There was no correlation between age at BMT and FSH, LH or testosterone, but there was a negative correlation between FSH and inhibin B (rho = -0.87, P < 0.003). we conclude that girls are more likely to suffer ovarian failure the older they are at bmt, and that early ovarian recovery is possible. the negative correlation between fsh and inhibin b in boys suggests that this parameter is an additional indicator of tubular function. PMID:11498747

Couto-Silva, A C; Trivin, C; Thibaud, E; Esperou, H; Michon, J; Brauner, R

2001-07-01

342

Beef customer satisfaction: factors affecting consumer evaluations of clod steaks.  

Science.gov (United States)

An in-home beef study evaluated consumer ratings of clod steaks (n = 1,264) as influenced by USDA quality grade (Top Choice, Low Choice, High Select, and Low Select), city (Chicago and Philadelphia), consumer segment (Beef Loyals, who are heavy consumers of beef; Budget Rotators, who are cost-driven and split meat consumption between beef and chicken; and Variety Rotators, who have higher incomes and education and split their meat consumption among beef, poultry, and other foods), degree of doneness, and cooking method. Consumers evaluated each steak for Overall Like, Tenderness, Juiciness, Flavor Like, and Flavor Amount using 10-point scales. Grilling was the predominant cooking method used, and steaks were cooked to medium-well and greater degrees of doneness. Interactions existed involving the consumer-controlled factors of degree of doneness and(or) cooking method for all consumer-evaluated traits for the clod steak (P 0.05). One significant main effect, segment (P = 0.006), and one significant interaction, cooking method x city (P = 0.0407), existed for Overall Like ratings. Consumers in the Beef Loyals segment rated clod steaks higher in Overall Like than the other segments. Consumers in Chicago tended to give more uniform Overall Like ratings to clod steaks cooked by various methods; however, consumers in Philadelphia gave among the highest ratings to clod steaks that were fried and among the lowest to those that were grilled. Additionally, although clod steaks that were fried were given generally high ratings by consumers in Philadelphia, consumers in Chicago rated clod steaks cooked in this manner significantly lower than those in Philadelphia. Conversely, consumers in Chicago rated clod steaks that were grilled significantly higher than consumers in Philadelphia. Correlation and stepwise regression analyses indicated that Flavor Like was driving customer satisfaction of the clod steak. Flavor Like was the sensory trait most highly correlated to Overall Like, followed by Tenderness, Flavor Amount, and Juiciness. Flavor Like was the first variable to enter into the stepwise regression equation for predicting Overall Like, followed by Tenderness and Flavor Amount. For the clod steak, it is likely that preparation techniques that improve flavor without reducing tenderness positively affect customer satisfaction. PMID:11881929

Goodson, K J; Morgan, W W; Reagan, J O; Gwartney, B L; Courington, S M; Wise, J W; Savell, J W

2002-02-01

343

Do ICTs Affect Workforce Productivity in Egyptian Industrial Organizations?  

Directory of Open Access Journals (Sweden)

Full Text Available The present study aims to investigate the influence of Information Communication Technologies-ICTs’ dimensions (Information Technology (IT, Management Information System (MIS, Office automation (OA, Intranet and Internet on workforce productivity for a group of industrial organizations in Alexandria - Egypt. The population of the study included managers and staff members working in different areas related to ICTs in selected industrial organizations at various managerial levels. A descriptive-statistical combined research study was conducted. Simple random sampling was used for the selection of the participating industrial organization. A questionnaire was used as the data collection method. Expert comments were used to check the validity of study instrument, and the reliability of questions was calculated as 79% using Cronbach’s Alpha coefficient. Single variable t-test, Friedman and variance analysis tests were used for the analysis. Study findings revealed that the specified dimensions of ICTs positively affect workforce productivity of industrial organizations in Alexandria - Egypt.

M. Elsaadani

2014-06-01

344

Determinants of Total Factor Productivity in Pakistan  

OpenAIRE

The role of productivity in accelerating the pace of economic growth is well recognized in economic literature and this paper shows that Pakistan’s case is no exception. The purpose of the paper was also to see the effect of government fiscal policy, monetary policy and other economic measures on TFP. It shows that these policies affect TFP through human capital endowments of employed labor force, providing better physical infrastructure and other facilitation to incorporate technology i...

Ahmed, Qazi Masood; Hyder, Kalim

2007-01-01

345

Prioritization of the Factors Affecting Sport Tourism Development  

OpenAIRE

Today, tourism and sport enjoy a complementary interrelationship directly affecting the nations` economy. Also sport tourism is, nowadays, considered as the most lucrative industry worldwide. In addition, it may affect all the social strata economically and politically. Thus, needless to say that much more attention should be directed to the industry through clear-cut policies, visions and constructive plans in this regard. To this end, in this paper, the authors investigated and offered the ...

Sajjadi, S. N.; Arefeh Jamshidi; Akbar Heidary

2012-01-01

346

Looking under the Bonnet: Factors Affecting Student Adoption of E-Learning Systems in Jordan  

Science.gov (United States)

The primary questions addressed in this paper are the following: what are the factors that affect students' adoption of an e-learning system and what are the relationships among these factors? This paper investigates and identifies some of the major factors affecting students' adoption of an e-learning system in a university in Jordan. E-learning…

Abbad, Muneer Mahmood; Morris, David; de Nahlik, Carmel

2009-01-01

347

Factors determining production (FDP in basketball  

Directory of Open Access Journals (Sweden)

Full Text Available The aim of this research was to introduce a simple and easily computable metric to assess the performance of basketball players through non-scoring box-score statistics. This metric was called Factors Determining Production (FDP. FDP was created through separating points made from the remaining variables which may bequantitatively recorded. FDP was derived from the outcome of several games, it considers both teams’ statistics, and it reflects the final result of a game with noticeable merit. This metric provides a simple linear weight formula which, together with the points made by each player, yields a comprehensible picture of how well a worker(player performed. FDP has been validated through different statistical procedures and it overcomes Win Score from a theoretical viewpoint, because it departs production (points from factors facilitating production.

Jose A. Martinez

2012-01-01

348

Insulin-like growth factor- I and factors affecting it in thalassemia major.  

Science.gov (United States)

Despite improvement of blood transfusion regimens and iron chelation therapy growth and maturational delay, cardiomyopathy, endocrinopathies and osteoporosis still occur in good number of thalassemic patients. Decreased IGF-1 secretion occurs in the majority of the thalassemic patients particularly those with growth and pubertal delay. Many factors contribute to this decreased synthesis of IGF-I including disturbed growth hormone (GH) - insulin-like growth factor - I (IGF-I) axis. The possible factors contributing to low IGF-I synthesis in thalassemia and the possible interaction between low IGF-I secretion and the occurrence of these complications is discussed in this mini-review. Improvement of IGF-I secretion in thalassemic patients should be intended to improve linear growth and bone mineral accretion in thalassemic patients. This can be attained through adequate correction of anemia and proper chelation, nutritional supplementation (increasing caloric intake), correction of vitamin D and zinc deficiencies, induction of puberty and correction of hypogonadism at the proper time and treating GH deficiency. This review paper provides a summary of the current state of knowledge regarding IGF-I and factors affecting it in patients with thalassaemia major (TM). Search on PubMed and reference lists of articles with the term 'IGF-I, GH, growth, thalassemia, thyroxine, anemia, vitamin D, and zinc' was carried out. A hundred and forty-eight articles were found and used in the write up and the data analyzed was included in this report. PMID:25729686

Soliman, Ashraf T; De Sanctis, Vincenzo; Elalaily, Rania; Yassin, Mohamed

2015-01-01

349

Rice Farms Efficiency and Factors Affecting the Efficiency in MADA Malaysia  

Directory of Open Access Journals (Sweden)

Full Text Available Malaysian rice farming is still constrained by the low productivity despite many supports and subsidies that have been enacted to this sector. The difficulties in improving the yield is potentially caused by the unintensive use of inputs due to the inefficient management on the rice farm. Thus this study aims to measure the rice farm efficiency and factors affecting that efficiency. Two stage analysis was adopted whereas in the first stage data envelopment analysis was used and corrected by the bootstrap method. Then in the second stage a Tobit model was employed to estimate factors affecting the efficiency. On average, the technical efficiency score estimated by DEA was about 0.6375 and implied with a given amount of inputs, the rice farms could increase its output by 57.31%. However, after correcting for the bias, the technical efficiency score was about 0.5366 and indicated that rice farms in MADA could increase its output at 86.35%. Further, by considering the lower and the higher bounds of efficiency scores, on the average, the rice farms could increase its output in the range from 20.13-99.12 with 95% confidence interval. Three factors that significantly affect the rice farm efficiency were the household size, land ownership and secondary level of education of sampled farmers. The positive significant effect of household size implied that farms with more household member was appeared to be more efficiently manage their production. Then, the negative effect of land ownership to the efficiency implied farmers who had the own land were tend to be more inefficient than those who rent the land. It was related to their motivation on the production whereas tenant farmers were more motivated to improve their production and get higher income so that they strived to manage the production in a professional manner and receptive to new technology as well. Further, farmers with secondary education level more efficiently managed the rice farm than others because of their passion for managing their production.

Lira Mailena

2014-01-01

350

Factors Affecting Students’ Satisfaction towards Bus Services in University  

Directory of Open Access Journals (Sweden)

Full Text Available This study describes a statistical study of students’ satisfaction towards bus services in university. The objective of this study is to explore factors that influence student satisfaction on bus services in Universiti Utara Malaysia (UUM. Primary data were collected by distributing direct questionnaire to four hundred students in UUM. A factor analysis yielded three factors which are attitude of bus driver, reliability of the buses and facilities of buses.

Zahayu Md Yusof

2014-08-01

351

FACTORS AFFECTING TEACHERS’ USE OF INFORMATION AND COMMUNICATION TECHNOLOGY  

OpenAIRE

Research studies in the past decade have shown that computer technology is an effective means for widening educational opportunities, but most teachers neither use technology as an instructional delivery system nor integrate technology into their curriculum. Studies reveal a number of factors influencing teachers’ decisions to use ICT in the classroom: non-manipulative and manipulative school and teacher factors. These factors are interrelated. The success of the implementation of ICT is no...

Mojgan Afshari; Kamariah Abu Bakar; Wong Su Luan; Bahaman Abu Samah; Foo Say Fooi

2009-01-01

352

Factors That Affect Feed Intake of Meat Birds: A Review  

OpenAIRE

Feed intake is the major factor that influences both the body weight gain and feed efficiency in meat-type poultry. Because so many factors can influence feed intake, it is often difficult to correct a problem of poor feed intake unless a complete review of feed and management practices is made. Management and flock health issues are usually more likely to reduce feed intake than dietary factors. Dietary factors that influence feed intake would be common among all flocks in a complex r...

Ferket, Peter R.; Gernat, Abel G.

2006-01-01

353

Methyl salicylate production in tomato affects biotic interactions.  

Science.gov (United States)

The role of methyl salicylate (MeSA) production was studied in indirect and direct defence responses of tomato (Solanum lycopersicum) to the spider mite Tetranychus urticae and the root-invading fungus Fusarium oxysporum f. sp. lycopersici, respectively. To this end, we silenced the tomato gene encoding salicylic acid methyl transferase (SAMT). Silencing of SAMT led to a major reduction in SAMT expression and MeSA emission upon herbivory by spider mites, without affecting the induced emission of other volatiles (terpenoids). The predatory mite Phytoseiulus persimilis, which preys on T. urticae, could not discriminate between infested and non-infested SAMT-silenced lines, as it could for wild-type tomato plants. Moreover, when given the choice between infested SAMT-silenced and infested wild-type plants, they preferred the latter. These findings are supportive of a major role for MeSA in this indirect defence response of tomato. SAMT-silenced tomato plants were less susceptible to a virulent strain of F. oxysporum f. sp. lycopersici, indicating that the direct defense responses in the roots are also affected in these plants. Our studies show that the conversion of SA to MeSA can affect both direct and indirect plant defence responses. PMID:20059742

Ament, Kai; Krasikov, Vladimir; Allmann, Silke; Rep, Martijn; Takken, Frank L W; Schuurink, Robert C

2010-04-01

354

ACCURACY OF PESTICIDE REFERENCE STANDARD SOLUTIONS. PART I. FACTORS AFFECTING ORGANIC SOLVENT EVAPORATION  

Science.gov (United States)

A gravimetric experiment was undertaken to identify the factors affecting solvent evaporation from analytical reference standard solutions and to establish the magnitude of the resultant solvent evaporation. The evaporation of organic solvent from standard solutions is affected b...

355

Assessing the total factor productivity of cotton production in Egypt.  

Science.gov (United States)

The main objective of this paper is to decompose the productivity growth of Egyptian cotton production. We employ the stochastic frontier approach and decompose the changes in total factor productivity (CTFP) growth into four components: technical progress (TP), changes in scale component (CSC), changes in allocative efficiency (CAE), and changes in technical efficiency (CTE). Considering a situation of scarce statistical information, we propose four alternative empirical models, with the purpose of looking for convergence in the results. The results provide evidence that in this production system total productivity does not increase, which is mainly due to the negative average contributions of CAE and TP. Policy implications are offered in light of the results. PMID:25625318

Rodríguez, Xosé A; Elasraag, Yahia H

2015-01-01

356

World Food Prices after WTO Foundation: Deterministic and Non-deterministic Factors in Production  

OpenAIRE

This paper develops a two-step method to estimate the influence of non-deterministic factors in production on subsequent food prices, and finds that non-deterministic factors of wheat production do significantly affect both wheat and corn prices in the world and, however, those of corn do not.

Meyer, Stefan; Yu, Xiaohua

2011-01-01

357

Study on the Attributes and Correlations of Production Factors  

OpenAIRE

With the advancement of the society and the development of the economy, human cognitions about the production factors are more and more deepened. However, as viewed from the attribute structure of production factor, the production factor only contains two attributes such as hard factor and soft factor, and the soft factor is composed by knowledge soft factor and society soft factor, which form three capital forms, i.e. material capital, human capital and social capital, and these three sorts ...

Zuohua Yue

2009-01-01

358

CAMBIO CLIMÁTICO: ¿CÓMO AFECTA LA PRODUCCIÓN GANADERA? (Climatic change: How affect the livestock production?  

Directory of Open Access Journals (Sweden)

Full Text Available ResumenEl cambio climático es un proceso inequívoco; se dice cómo la producción bovina estimula uno de los factores que lo produce: el efecto invernadero; sin embargo es importante conocer su efecto contrario: cómo el cambio climático afecta la ganadería.SummaryClimate change is a distinct process; it’s knew how the cattle production stimulates one of the factors that produced it: the greenhouse effect, however it’s important to know the opposite effect: how climate change affects livestock.

Garzón Alfonso, J.E.

2011-08-01

359

Non-nutritional factors affecting lactation persistency in dairy ewes: a review  

Directory of Open Access Journals (Sweden)

Full Text Available Milk production is largely related to the shape of the lactation curve. Key elements of the lactation pattern are peak yield, which is the maximum daily yield reached during lactation, and lactation persistency, which is the medium rate of milk yield decrease after the lactation peak. The ideal lactation curve should have a reasonably high peak and a flat trend afterwards. A more persistent lactation is desirable because it is related to better animal health and reduction of feeding costs. Effective strategies to improve lactation persistency require a deep understanding of the main factors that affect this trait, including genetics, hormonal status and administration, udder morphology, seasonal changes, management, animal health (e.g. mastitis, stress and nutrition. This review covers the effects of non-nutritional factors on lactation persistency in dairy sheep.

Antonello Cannas

2010-01-01

360

Review of the factors affecting the selection and implementation of waste management technologies  

International Nuclear Information System (INIS)

The objective of this publication is to identify and critically review the factors affecting the selection of waste management strategies and technologies; summarize and discuss the options available, and offer a systematic approach for considering these factors to design, install and operate appropriate technologies for waste streams generated. The scope of this publication includes the management of radioactive waste from all orientations including low and intermediate level waste arising from the production of radionuclides and their application in industry, agriculture, medicine, education and research; waste generated from research reactors, power reactors and from nuclear fuel cycle activities including reprocessing high level waste. Although waste from decommissioning is not specifically addressed, the management of this waste is not significantly different from other types of waste in the same category

361

Factors Affecting Quality Enhancement Procedures for E-Learning Courses  

Science.gov (United States)

Purpose: This paper reports on an empirical study exploring the way in which campus-based higher education institutions (HEIs) in the UK apply their internal quality assurance and enhancement (QA/QE) procedures to their e-learning courses. The purpose of this paper is to identify those characteristics of e-learning courses which affected the…

Jara, Magdalena; Mellar, Harvey

2009-01-01

362

Factors Affecting Students' Self-Efficacy in Higher Education  

Science.gov (United States)

Researchers working in educational settings are increasingly paying attention to the role students' thoughts and beliefs play in the learning process. Self-efficacy, a key element of social cognitive theory, appears to be an important variable because it affects students' motivation and learning. This article investigates empirical literature…

van Dinther, Mart; Dochy, Filip; Segers, Mien

2011-01-01

363

ANALYSIS OF FACTORS AFFECTING METHANE GAS RECOVERY FROM SIX LANDFILLS  

Science.gov (United States)

The report gives results of a pilot study of six U.S. landfills that have methane (CH4) gas recovery systems. NOTE: The study was a first step in developing a field testing program to gather data to identify key variables that affect CH4 generation and to develop an empirical mod...

364

Cognitive and Affective Factors of TV Advertising's Influence on Children.  

Science.gov (United States)

Reviews the research on children's understanding of the intent of advertising, the persuasive impact of television commercials, and children's cognitive defenses and resistance to such persuasion. Concludes that any model which tries to account for advertising's influence on children must incorporate affective as well as cognitive components. (PD)

Wartella, Ellen

1984-01-01

365

Factors and pharmaceuticals that affect the radiopharmaceuticals bio distributions  

International Nuclear Information System (INIS)

The pattern of biodistribution of radiopharmaceuticals may be affected by various agents and therapeutical procedures, chemotherapy agents, thyroid hormones, metals, radiotherapy, surgery, anesthetic agents, dialysis other radiopharmaceutical interactions. Recommendations for the detection of altered biodistribution in patients by causes not directly related with the pathology itself was given. pathology itself was given

366

Institutional Factors Affecting Biophysical Outcomes in Forest Management  

Science.gov (United States)

Although there is considerable interest in the impact of diverse policies affecting the biophysical outcomes in forests, gaining a substantial sample over time of forests under different institutional arrangements has been difficult. This article analyzes data from 46 forests located in six countries over time. In forests where policies have been…

Coleman, Eric A.

2009-01-01

367

Factors Affecting the Yield of Sunflower in the Province of Punjab (Pakistan  

Directory of Open Access Journals (Sweden)

Full Text Available Pakistan spends major chunk of its foreign exchange reserves on the import of edible oil due to poor domestic base of oilseed production. Considering bleak economic condition of Pakistan, it is very essential to save forex reserves by enhancing domestic oilseed production. Among various types of oilseeds grown in the country, the sunflower, a non-traditional oilseeds has the potential to bridge the gap that exists between the domestic demand and supply due to its high oil contents and agronomic suitability to the climatic conditions of Pakistan. This research article attempts to investigate the factor affecting the yield performance of sunflower in the province of Punjab (Pakistan. A Cobb-Douglas type of function has been employed for estimation purpose.

Muhammad Siddique Javed

2001-01-01

368

Mesoscale physical variability affects zooplankton production in the Labrador Sea  

Science.gov (United States)

Surface distribution (0-100 m) of zooplankton biomass and specific aminoacyl-tRNA synthetases (AARS) activity, as a proxy of structural growth, were assessed during winter 2002 and spring 2004 in the Labrador Sea. Two fronts formed by strong boundary currents, several anticyclonic eddies and a cyclonic eddy were studied. The spatial contrasts observed in seawater temperature, salinity and fluorescence, associated with those mesoscale structures, affected the distributions of both zooplankton biomass and specific AARS activity, particularly those of the smaller individuals. Production rates of large organisms (200-1000 ?m) were significantly related to microzooplankton biomass (63-200 ?m), suggesting a cascade effect from hydrography through microzooplankton to large zooplankton. Water masses defined the biomass distribution of the three dominant species: Calanus glacialis was restricted to cold waters on the shelves while Calanus hyperboreus and Calanus finmarchicus were widespread from Canada to Greenland. Zooplankton production was up to ten-fold higher inside anticyclonic eddies than in the surrounding waters. The recent warming tendency observed in the Labrador Sea will likely generate weaker convection and less energetic mesoscale eddies. This may lead to a decrease in zooplankton growth and production in the Labrador basin.

Yebra, L.; Harris, R. P.; Head, E. J. H.; Yashayaev, I.; Harris, L. R.; Hirst, A. G.

2009-05-01

369

Dietary factors that affect the bioavailability of carotenoids  

OpenAIRE

Carotenoids are thought to contribute to the beneficial effects of increased vegetable consumption. Various dietary factors have an effect on the bioavailability of carotenoids. The type of food matrix in which carotenoids are located is a major factor. The bioavailability of ß-carotene from vegetables in particular has been shown to be low (14?rom mixed vegetables) compared with that of purified ß-carotene added to a simple matrix (e.g., salad dressing), whereas for lutein, the differenc...

Hof, K. H.; West, C. E.; Weststrate, J. A.; Hautvast, J. G. A. J.

2000-01-01

370

Factors Affecting Entrepreneurial Intention among UniSZA Students  

OpenAIRE

Graduates contributions to entrepreneurship would stimulate the country’s economic growth. The aim of this study is to determine and investigate factors influence on students’ perception of the entrepreneurial intention, in order to present the most contemporary future generation of entrepreneurs that can shape the future of the economy and the country. The area of this study covers demographic profiles, attitudinal and behavioral factors, and how these influence the intentions of student...

Zaharah Ghazali; Nor Asmahani Ibrahim; Fakhrul Anwar Zainol

2012-01-01

371

Case Study of Factors Affecting Chinese Students’ English Communication Performance  

OpenAIRE

For ESL teaching in China’s universities, not enough emphasis is put on verbal communication as a yardstick of language mastery and methodological success. Developing student’s communication competence is not only concerned with the nature of language learning from linguistic perspectives, but also could be influenced by such exogenous factors as learning environment, learning psychology, and learning strategies. It is necessary to investigate whether these factors have an...

Liu, Ping

2009-01-01

372

Gene Risk Factors for Age-Related Brain Disorders May Affect Immune System Function  

Science.gov (United States)

Gene risk factors for age-related brain disorders may affect immune system function June 17, 2014 Scientists have discovered gene ... many of these same gene variants are known risk factors for diseases that occur later in life, including ...

373

Analysis on the Main Factors Affecting the Reliability of Test Papers  

OpenAIRE

Reliability is an important factor to evaluate test papers. This paper analyzes the factors which affect the reliability of test papers and discusses the methods to increase the reliability of test papers.

Jiang Zhu; Lemeng Han

2011-01-01

374

Matrix Factorizations, Minimal Models and Massey Products  

CERN Document Server

We present a method to compute the full non-linear deformations of matrix factorizations for ADE minimal models. This method is based on the calculation of higher products in the cohomology, called Massey products. The algorithm yields a polynomial ring whose vanishing relations encode the obstructions of the deformations of the D-branes characterized by these matrix factorizations. This coincides with the critical locus of the effective superpotential which can be computed by integrating these relations. Our results for the effective superpotential are in agreement with those obtained from solving the A-infinity relations. We point out a relation to the superpotentials of Kazama-Suzuki models. We will illustrate our findings by various examples, putting emphasis on the E_6 minimal model.

Knapp, J; Knapp, Johanna; Omer, Harun

2006-01-01

375

Factorization and resummation for color octet production  

CERN Document Server

We discuss the production of heavy colored paricles at the Large Hadron Collider (LHC) through gluon-gluon fusion process. A factorization theorem is obtained for this process using Soft Collinear Effective Theory. Our factorization theorem does not depend on any assumptions regarding the physics above the mass of the heavy colored particle. In this sense it is universal. The matching coefficient at the heavy particle mass scale depends however on the unkown physics above that scale and thus it is model dependent. Due to the large mass of the heavy colored particle, i.e., the hard scale and near the partonic kinematic threshold for production of such particles a resummation of large logarithms needs to be performed. The resummation is justified due to the dominance of the gluon distribution function at small $x$. For phenomenological purposes we utilize the Manohar-Wise model.

idilbi, Ahmad

2009-01-01

376

Factors relevant in bacterial pyrroloquinoline quinone production:  

OpenAIRE

Quinoprotein content and levels of external pyrroloquinoline quinone (PQQ) were determined for several bacteria under a variety of growth conditions. From these data and those from the literature, a number of factors can be indicated which are relevant for PQQ production. Synthesis of PQQ is only started if synthesis of a quinoprotein occurs, but quinoprotein synthesis does not depend on PQQ synthesis. The presence of quinoprotein substrates is not necessary for quinoprotein and PQQ syntheses...

Kleef, M. A.; Duine, J. A.

1989-01-01

377

Demotivating Factors Affecting EFL Learning of Iranian Seminary Students  

OpenAIRE

In the present study, an attempt has been made to determine the demotives affecting EFL learning of Iranian Islamic seminary students and also to distinguish the motivated and demotivated EFL learners in terms of their EFL learning as the major focus of this study. Fifty Iranian EFL seminary students were investigated using two validated questionnaires. First a modified version of The Attitude/Motivation Test Battery Questionnaire (AMTB) originally developed by Gardner (2004) was used to dete...

Omid Tabatabaei; Ahmad Molavi

2012-01-01

378

Factors affecting airborne monocyclic aromatic hydrocarbon uptake by plants  

Science.gov (United States)

Three factors influencing foliar uptake of monocyclic aromatic hydrocarbons (MAHs; benzene, toluene, ethylbenzene, xylenes) in situ were investigated. The first factor, the plant species, was found to determine absorption pattern and concentrations. Secondly, time variation studies showed that response of leaf concentrations to small changes in air concentrations only occurs after several days or weeks, whereas adaptation to a much higher level of air pollution takes several months. Thirdly, MAH leaf concentrations were observed to be dependent on mean air pollution at the sampling site. Bioconcentration factors BCF vs (g m -3 of wet leaf/g m -3 of air) for MAHs in Pseudotsuga menziesii (Mirb.) Franco leaves were determined to range from 2.7 × 10 4 to 4.7 × 10 5.

Keymeulen, Regine; Schamp, Niceas; Van Langenhove, Herman

379

[Factors that affect time between birth and first breastfeeding].  

Science.gov (United States)

The current study investigated factors associated with time between birth and first breastfeeding. A representative sample of mothers (10% of deliveries in 47 maternity hospitals in Rio de Janeiro, Brazil) was interviewed (n = 10,077). A random effects proportional risks survival model (at the maternity ward level) was employed, in a three-tier hierarchical approach. Models were fitted separately for normal and cesarean delivery. Time to initiation of breastfeeding in the first 24 hours of life differed between mothers with vaginal delivery (median 4 hours) versus cesarean section (10 hours). Common risk and protective factors were identified: maternal age; neonatal complications; neonatal care considered sub-optimal by the mother; admission of the newborn to the nursery; parity; birth weight. The model predicted 33% of variance in first breastfeeding. In conclusion, time from delivery to first breastfeeding was increased by biological factors, high cesarean rates, and inadequate childbirth and neonatal care practices. PMID:19009148

Boccolini, Cristiano Siqueira; Carvalho, Márcia Lázaro de; Oliveira, Maria Inês Couto de; Leal, Maria do Carmo; Carvalho, Marilia Sá

2008-11-01

380

Factors affecting the spontaneous mutational spectra in somatic mammalian cells  

Directory of Open Access Journals (Sweden)

Full Text Available  In our survey of references we are discussed the influence of factors biological origin on the spontaneous mutation specters in mammalian. Seasonal and age components influence on the frequence of cytogenetic anomalies. The immune and endocrinous systems are take part in control of the alteration of the spontaneous mutation specters. Genetical difference of sensibility in animal and human at the alteration of factors enviroment as and  genetical differences of repair systems activity are may influence on individual variation of spontaneous destabilization characters of chromosomal apparatus.

?.?. ?????????

2006-04-01

381

Factors affecting the morphology of isocitrate lyase crystals  

Science.gov (United States)

Isocitrate lyase crystals have been grown by the hanging drop vapor equilibration method in both 1- g and ? g, and by vapor equilibration in small capillaries. The crystal morphologies obtained have ranged from dendritic to "octagonal" prisms. Theoretical evaporation models have been applied to these growth regimes. The results of these analyses along with other experimental results indicate the factors which must be controlled to produce good growth morphologies. The evaporation rate of the crystallizing solution is the most important factor in determining the growth morphology. Slower evaporation gives slower growth rates and better crystals.

DeMattei, Robert C.; Feigelson, Robert S.; Weber, Patricia C.

1992-08-01

382

Factors affecting the acquisition of plural morphology in Jordanian Arabic.  

Science.gov (United States)

This study investigates the development of plural morphology in Jordanian Arab children, and explores the role of the predictability, transparency, productivity, and frequency of different plural forms in determining the trajectory that children follow in acquiring this complex inflectional system. The study also re-examines the development of the notion of default over several years. Sixty Jordanian children, equally divided among six age groups (three to eight years), completed an oral real-word pluralization task and a nonsense-word pluralization task. The findings indicate that feminine sound plurals are acquired before and extended to the other plural forms. Productivity and frequency seem to shape the acquisition patterns among younger children, but predictability becomes more critical at a later age. Younger children use the most productive plural as the default form, but older children tend to use two default forms based on frequency distributions in the adult language. The theoretical implications of the findings are discussed. PMID:25158792

Albirini, Abdulkafi

2014-08-27

383

A Quantitative Assessment of Factors Affecting College Sports' Team Unity  

Science.gov (United States)

The competitiveness of National Collegiate Association (NCAA) schools increases in intensity each year. With the increased pressure on college sport staffs to be undefeated season after season, coaches have to find ways to keep players happy; to do this, they have to find factors that contribute to unify the players. It is nearly impossible to…

Aghazadeh, Seyed-Mahmoud; Kyei, Kwasi

2009-01-01

384

School-Related Factors Affecting High School Seniors' Methamphetamine Use  

Science.gov (United States)

Data from the 2005 Monitoring the Future survey were used to examine relationships between school-related factors and high school seniors' lifetime methamphetamine use. The study applied logistic regression techniques to evaluate effects of social bonding variables and social learning variables on likelihood of lifetime methamphetamine use. The…

Stanley, Jarrod M.; Lo, Celia C.

2009-01-01

385

Factors affecting employee retention : what do engineers think?  

OpenAIRE

Much has been made of the skills shortage in South Africa. One of the main factors sited for the government’s inability to get on top of the backlog in infrastructure is the lack of skills in the country. In addition to this, the skills shortage is believed to have an adverse impact on the country’s growth rate.

Stanz, Karel J.

2009-01-01

386

Factors Affecting the Success of Hmong College Students in America  

Science.gov (United States)

This study explores barriers and success factors of Hmong students in American colleges by interviewing five Hmong graduate students from refugee families in the US. Emerging themes revolve around academic, cultural and financial barriers. Professors, advisors, classmates, academic support programmes, family, financial aid and their own…

Xiong, Soua; Lam, Sarah K. Y.

2013-01-01

387

Factors Affecting Long-Term Abstinence from Substances Use  

Science.gov (United States)

Objective: The purpose of this study is to explore the attitudes of abstainers from drug use that relate to the factors leading to long-term abstinence. Materials and Methods: Cross-sectional study was carried out in Al-Amal Hospital to examine, which attitudes of abstainers related to long-term abstinence. A random survey was conducted on 62…

Elsheikh, Salah Elgaily

2008-01-01

388

Anxiety prevalence and affecting factors among university students.  

Science.gov (United States)

This study provides insight into the prevalence and correlates of anxiety among university students in Bursa, Turkey. A total of 4850 students participated in the study. Students completed Spielberger's State-Trait Anxiety Inventory, as well as a questionnaire designed to determine risk factors of anxiety. About 29.6% and 36.7% of the students in the study reported state and trait anxiety scores of more than 45 points, respectively. Controlling for gender and family socioeconomic status, the following characteristics predict both state and trait anxiety: the status of family relationships, difficulty understanding lectures, difficulty adapting to university life, having to solve problems independently, a vision of self-sufficiency in problem solving, negative life experience, and satisfaction with their department of study. The following factors are predictive of only state anxiety: boarding conditions, having a chronic disease, and exam periods. The risk factors for trait anxiety scores include the following: anxiety about the future, preparation for work life, class of study, private relationships, and attitude of the family toward their child. Families, secondary education institutions, and universities should cooperate to eliminate risk factors for anxiety among university students. PMID:20032042

Ozen, Nurdan Sakin; Ercan, Ilker; Irgil, Emel; Sigirli, Deniz

2010-01-01

389

Sociological Factors Affecting Agricultural Price Risk Management in Australia  

Science.gov (United States)

The highly volatile auction system in Australia accounts for 85 percent of ex-farm wool sales, with the remainder sold by forward contract, futures, and other hedging methods. In this article, against the background of an extensive literature on price risk strategies, we investigate the behavioral factors associated with producers' adoption of…

Jackson, Elizabeth; Quaddus, Mohammed; Islam, Nazrul; Stanton, John

2009-01-01

390

Social Life Factors Affecting Suicide in Japanese Men and Women.  

Science.gov (United States)

Examined relationship between social and demographic indicators and age-adjusted suicide mortality in 46 prefectures in Japan. Rural residence was the major factor for male mortality in 1970 and 1975. In 1970, home help for the elderly, depopulation by social mobility, and urban residence were positively associated with male mortality. In women,…

Araki, Shunichi; Murata, Katsuyuki

1986-01-01

391

Factors that Affect Nontraditional Vocational Enrollment among Women.  

Science.gov (United States)

Vocational training program females (N=470) completed a questionnaire assessing the role of personality and social support factors in nontraditional training enrollment. Results revealed differences in the amount of support and encouragement received from others, with nontraditional students receiving more support from female friends, family…

Houser, Betsy Bosak; Garvey, Chris

1985-01-01

392

Factors Affecting Perceived Stigma in Leprosy Affected Persons in Western Nepal  

OpenAIRE

A total of 135 leprosy affected persons were interviewed with a questionnaire containing EMIC questions designed to assess the level of perceived stigma and the questionnaire containing variables for socio-demographic characteristics, knowledge about leprosy and the clinical presentations of the participants. Clinical presentation as disability was graded according to WHO guidelines, where grade 0 means no disability found, grade I means loss of sensation has been noted in the hand or foot wh...

Adhikari, Bipin; Kaehler, Nils; Chapman, Robert S.; Raut, Shristi; Roche, Paul

2014-01-01

393

Factors affecting the yield and properties of bacterial cellulose.  

Science.gov (United States)

Acetobacter xylinum E(25) has been applied in our studies in order to find optimal culture conditions for effective bacterial cellulose (BC) production. The strain displays significantly higher stability in BC production under stationary culture conditions. In contrast, intensive agitation and aeration appear to drastically reduce cellulose synthesis since such conditions induced formation of spontaneous cellulose nonproducing mutants (Cel-), which dominated in the culture. Mutation frequency strictly depends on the medium composition in agitated cultures. Enrichment of the standard SH and Yamanaka media with 1% ethanol significantly enhanced BC production in stationary cultures. Horizontal fermentors equipped with rotating discs or rollers were successfully applied in order to improve culture conditions. Relatively slow rotation velocity (4 rpm) and large surface area enabling effective cell attachment are optimal parameters for cellulose production. Physical properties of BC samples synthesized either in stationary cultures or in a horizontal fermentor revealed that cellulose from stationary cultures demonstrated a much higher value of Young's modulus, but a much lower value of water-holding capacity. PMID:12355318

Krystynowicz, A; Czaja, W; Wiktorowska-Jezierska, A; Gonçalves-Mi?kiewicz, M; Turkiewicz, M; Bielecki, S

2002-10-01

394

Factors that Affect the Microbiology of Commercial Shell Egg Processing  

Science.gov (United States)

Intact shell eggs are designed to limit bacterial contamination of egg contents, protecting a developing embryo, but also contributing to their wholesomeness as human food. In order for eggs to be involved in human enteritis, there is often temperature abuse of raw product followed by consumption o...

395

Environmental factors that can affect sleep and breathing: allergies.  

Science.gov (United States)

Allergic rhinitis and associated symptomatic nasal obstruction negatively affect sleep through a variety of mechanisms and may contribute to persistent symptoms and poor adherence with medical device therapy for sleep apnea. A history of sinonasal symptoms, particularly those that occur at night or in the supine position, is the cornerstone of the medical evaluation. Further research into the relationship between allergic rhinitis and sleep disturbance would benefit from improved anatomic and pathophysiologic phenotyping as well as more advanced outcome measures such as spectral electroencephalogram analysis or other polysomnography variables beyond the apnea-hypopnea index. PMID:25156773

Kent, David T; Soose, Ryan J

2014-09-01

396

Chemical and biological factors affecting bioavailability of contaminants in seawater  

International Nuclear Information System (INIS)

This paper discusses the influence that salinity has on the bioavailability of the two largest classes of contaminants, trace metals and organic compounds will be discussed. Although data on contaminant toxicity will be used to draw inferences about chemical availability, this discussion will focus on the properties that contaminants are likely to exhibit in waters of varying salinities. In addition, information on physiological changes that are affected by salinity will be used to illustrate how biological effects can alter the apparent availability of contaminants

397

Examining the Factors Affecting Student Dropout in an Online Learning Environment  

Science.gov (United States)

This study examined the factors affecting student dropouts in an online certificate program. In this research, a combination of quantitative and qualitative methods was used. Online Course Dropout Survey was developed and used to determine which factors affect student attrition from the program. The dropout survey was sent by e-mail to 98 students…

Yukselturk, Erman; Inan, Fethi Ahmet

2006-01-01

398

Factors affecting retention in science-based curriculums at HBCUs  

Energy Technology Data Exchange (ETDEWEB)

A systematic and comprehensive study of the retention of minority students enrolled in college-level engineering was conducted. The majority of prior work in this area focused on institutional retention factors for students in non-specified majors and considered students ``dropouts`` whenever there was a break in enrollment. This study looked only at students whose beginning major was engineering, enrolled primarily at historically black colleges and universities (HBCUs), including a comparison sample from a predominantly white institution (PWI). Science persisters were defined as those students who continuously enrolled in post-secondary institutions full- and part-time -- whether or not they transferred between institutions. The critical factor was their continued enrollment in engineering. Study participants provided four types of information: (1) a measure of academic motivation, (2) an objective measure of science interest, (3) a measure of nine aspects of normal personality functioning, and (4) an assessment of selected demographic variables. 64 refs.

Pelham, J.

1991-12-31

399

Factors Affecting the Real Estate Prices in Pakistan  

Directory of Open Access Journals (Sweden)

Full Text Available The current study examines the effect of factors influencing the prices of real estate inQuetta city. Hypothetically, this study is based upon five observed factors(urbanization, refugees’ influx, monetary, lack of investment alternatives and inflow offoreign remittances in relation to the prices of real estate. Questionnaire developed onthe basis of above variables were administered to a heterogeneous sample of 50property dealers and Quetta Development Authority. Descriptive statistics (percentage,percentile and frequency distribution were used to identify the level of influence andthe relation of above mentioned attributes towards the prices of real estate. The resultsrevealed that the prices of real estate in the region have been on an increasing trendand strong influence of all variables especially of government’s monetary and fiscalpolices and urbanization was found significant on the prices of real estate in Quetta.

Mehmood khan kakar

2011-06-01

400

Pareto analysis of critical factors affecting technical institution evaluation  

Directory of Open Access Journals (Sweden)

Full Text Available With the change of education policy in 1991, more and more technical institutions are being set up in India. Some of these institutions provide quality education, but others are merely concentrating on quantity. These stakeholders are in a state of confusion about decision to select the best institute for their higher educational studies. Although various agencies including print media provide ranking of these institutions every year, but their results are controversial and biased. In this paper, the authors have made an endeavor to find the critical factors for technical institution evaluation from literature survey. A Pareto analysis has also been performed to find the intensity of these critical factors in evaluation. This will not only help the stake holders in taking right decisions but will also help the management of institutions in benchmarking for identifying the most important critical areas to improve the existing system. This will in turn help Indian economy.

Victor Gambhir

2012-08-01

401

Factors that affect adolescents' adherence to diabetes treatment.  

Science.gov (United States)

There is strong evidence suggesting young people with type 1 diabetes experience difficulties adhering to their treatment regimens. The purpose of this literature review is to identify reasons for a lack of compliance in adolescents to allow nurses to develop knowledge to help improve treatment adherence. A literature search was undertaken by searching databases using key terms and inclusion criteria identified. The three themes are: parental influence, peer influence and depression. Findings indicate parental influence may be the main contributing factor towards non-compliance; however, associations between themes imply non-compliance is a result of a combination of factors. Limitations have been highlighted from the articles reviewed and provide opportunity for future research. PMID:25671752

Cox, Laura; Hunt, Jane

2015-02-01

402

Factors affecting Staphylococcus epidermidis growth in peritoneal dialysis solutions.  

OpenAIRE

Staphylococcus epidermidis is the most frequent cause of peritonitis complicating continuous ambulatory peritoneal dialysis. We studied factors that might influence the growth of S. epidermidis in commercially available peritoneal dialysis solution (PDS). Test strains were inoculated into PDS and incubated overnight at 37 degrees C. Samples were removed at appropriate intervals, bacterial counts were performed, and growth curves were constructed. We studied the effects of various osmolarities...

Mcdonald, W. A.; Watts, J.; Bowmer, M. I.

1986-01-01

403

Factors affecting statistical power in the detection of genetic association  

Science.gov (United States)

The mapping of disease genes to specific loci has received a great deal of attention in the last decade, and many advances in therapeutics have resulted. Here we review family-based and population-based methods for association analysis. We define the factors that determine statistical power and show how study design and analysis should be designed to maximize the probability of localizing disease genes. PMID:15931375

Gordon, Derek; Finch, Stephen J.

2005-01-01

404

Factors affecting radon levels in homes in British Columbia, Canada  

International Nuclear Information System (INIS)

British Columbia, Canada's most westerly province, has diverse geologic and climatic characteristics, making it a region where predicting radon gas level is quite complex. Data recently obtained for eleven (11) communities confirm an association between background terrestrial gamma radiation measurements and indoor radon levels in homes. Direct links between radon levels and other factors such as home design/construction features and heating/ventilation systems were observed in data for some communities, but not necessarily from the overall data. (author)

405

Factors Affecting the Quality of Life in Patients with Fibromyalgia  

OpenAIRE

Objective: Fibromyalgia is a chronic musculoskeletal pain syndrome characterized by diffuse pain and specific painful tender points.This study was planned to gain a better understanding of the factors that may impact the quality of life of patients with fibromyalgia.Material and Methods: The study was carried out in the Physical Therapy and Rehabilitation outpatient clinic with 35 women with fibromyalgia and 20 healthy women with no current or past medical history as controls. The subjects we...

Nuri Çetin; ?eniz Akçay Yalbuzda?; Mehmet Tu?rul Cab?o?lu; Nur Turhan

2009-01-01

406

FACTORS AFFECTING EMPLOYEE JOB SATISFACTION OF PHARMACEUTICAL SECTOR  

OpenAIRE

The Pharmaceutical sector plays a vital role in underpinning the economic development of a country. This study attempts to evaluate job satisfaction of employees in different pharmaceutical companies. It focuses on the relative importance of job satisfaction factors and their impacts on the overall job satisfaction of employees. It also investigates the impacts of pharmaceutical type, work experience, age, and sex differences on the attitudes toward job Satisfaction. The result shows that sal...

Mosammod Mahamuda Parvin; Nurul Kabir, M. M.

2011-01-01

407

Factors affecting urinary calculi treatment by extracorporeal shock wave lithotripsy  

OpenAIRE

Extracorporeal Shock Wave Lithotripsy (ESWL) is still the treatment of choice for most renal and upper ureteric stones; however the outcome depends on multiple factors. The objective of this study was to investigate the effects of stone density, as measured by Hounsfield Units (H.U) by non-contrast Computerized Tomography (CT), stone size and stone location on ESWL treatment outcome of urinary calculi in Jordanian patients. 65 patients underwent clinical, biochemical and radiological assessme...

Tarawneh Emad; Awad Zeyad; Hani Audy; Haroun Azmi; Hadidy Azmi; Mahafza Waleed; Samarah Osama

2010-01-01

408

Factors affecting early unplanned readmission of elderly patients to hospital.  

OpenAIRE

A random sample of 133 elderly patients who had an unplanned readmission to a district general hospital within 28 days of discharge from hospital was studied and compared with a matched control sample of patients who were not readmitted. The total group was drawn from all specialties in the hospital, and by interviewing the patients, their carers, the ward sisters, and the patients' general practitioners the factors causing early unplanned readmission for each patient were identified. Seven p...

Williams, E. I.; Fitton, F.

1988-01-01

409

Factors affecting mothers' choice of infant feeding method / S. Schoonwinkel.  

OpenAIRE

The benefits of breastfeeding are well known. It has been shown that HIV is transmitted through breast milk. The HIV epidemic is threatening exclusive breastfeeding in South Africa. It is important that mothers make the right infant feeding choice. There are three basic infant feeding methods available for HIV infected mothers namely; breastfeeding, replacement feeding or formula feeding and heat treatment of breast milk. There are many risk factors for the transmission of HIV through breast ...

Schoonwinkel, Susanna

2008-01-01

410

Factors Affecting in-Hospital Mortality of Acute Myocardial Infarction  

OpenAIRE

"nBackground: Acute myocardial infarction (AMI) is one of the most common causes of morbidity and mortality. Considering immense socioeconomic damages of growing AMI in developing countries we estimated prognostic value of major risk factors of AMI to predict probable In-hospital AMI mortality."nMethods: In a cohort survey from June 2004 to March 2006, 1798 patients hospitalized with proven AMI entered into two groups: Survived (patients discharged alive) and Expired (patients expir...

Salarifar, M.; Sadeghian, S.; Darabyan, S.; Solaymani, A.; Ar, Amirzadegan; Mahmoudian, M.; Hamidian, R.

2009-01-01

411

Factors That Affect Body Mass Index of Adults  

OpenAIRE

The aim of the study is to determine the factors that contribute to the body mass index (BMI) of adults and evaluate the eating habits of the individuals. The study was conducted on 498 adults whose ages were ranging from 20 to 85 (39.1±14.9 year). The data were collected using a questionnaire form that consisted of questions concerning general characteristics of individuals, frequency of food consumption and eating habits. Food types in the food consumption ...

Esma Asil; Metin Saip Surucuoglu; Funda Pinar Cakiroglu; Asli Ucar; Ayse Ozfer Ozcelik; Mustafa Volkan Yilmaz; Lale Sariye Akan

2014-01-01

412

Importance of the Motivational Factors Affecting Employees Satisfaction  

OpenAIRE

The purpose of this study is to determine the causes of motivational problems related to the duties of employees. The scope of the study involved 4 and 5 star rated hotels around Ankara region in Turkey. Twenty-seven different factors were analyzed regarding employees’ attitudes towards “importance” and “satisfaction” within the workplace. Results reveal that employees give more importance to behavioral approaches. Also, findings show that the least important issues that employees c...

Yurtseven, Gulten; Halici, Ali

2011-01-01

413

Social factors affecting women's susceptibility to HIV in India  

OpenAIRE

India is the epicenter of the HIV/AIDS epidemic in Asia. Previous research indicates that the majority of HIV-positive women in India were infected by their husbands, their only sexual partner, which makes them difficult identify as a high-risk population. This paper seeks to assess social factors associated with the transmission of HIV based on demographic determinants, such as age; sexual behavior; and gendered discrimination, such as domestic violence. Research for this paper consists of s...

Lall, Priya

2014-01-01

414

Environmental Factors Affecting the Occurrence of Mycobacteria in Brook Waters  

OpenAIRE

To evaluate the impact of environmental factors on the occurrence of environmental mycobacteria, viable counts of mycobacteria were measured in samples of brook water collected from 53 drainage areas located in a linear belt crossing Finland at 63° north latitude. The numbers of mycobacteria were correlated with characteristics of the drainage area, climatic parameters, chemical and physical characteristics of the water, and counts of other heterotrophic bacteria in the water. The numbers of...

Iivanainen, E. K.; Martikainen, P. J.; Va?a?na?nen, P. K.; Katila, M. -l

1993-01-01