oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 327 )

2018 ( 561 )

2017 ( 559 )

2016 ( 665 )

Custom range...

Search Results: 1 - 10 of 302453 matches for " T. L. Provin "
All listed articles are free for downloading (OA Articles)
Page 1 /302453
Display every page Item
Runoff and Nutrient Losses from Constructed Soils Amended with Compost
N. E. Hansen,D. M. Vietor,C. L. Munster,R. H. White,T. L. Provin
Applied and Environmental Soil Science , 2012, DOI: 10.1155/2012/542873
Abstract: Composted organic materials used to stabilize roadside embankments in Texas promote rapid revegetation of soils disturbed by construction activities. Yet, adding compost to soil may increase total and soluble plant nutrients available for loss in runoff water. Composted municipal biosolids and dairy manure products were applied to soils in Texas according to prescribed Texas Department of Transportation specifications for stabilizing roadside soils. The specifications included a method for incorporating compost into soils prior to seeding or applying a compost and woodchip mix over a disturbed soil and then seeding. Applying compost and woodchips over the soil surface limited sediment losses (14 to 32 fold decrease) compared to incorporating compost into the soil. Yet, the greatest total phosphorus and nitrogen losses in runoff water occurred from soils where the compost and woodchip mix was applied. The greatest losses of soluble phosphorus also occurred when the compost and woodchip mix was applied. In contrast, nitrate-nitrogen losses in runoff were similar when compost was incorporated in the soil or applied in the woodchip mix. Compost source affected the nutrient losses in runoff. While the composted municipal biosolids added greater nutrient loads to the soil, less nutrient loss in runoff occurred. 1. Introduction State Departments of Transportation (SDOT) are mandated to manage highway construction sites as potential nonpoint pollution sources. Soil particulate loads are often the greatest fraction of soil components in runoff from highway construction sites [1]. Soil erosion can occur when disturbed soils are unprotected from rainfall and flowing water. Silt fences, straw mulch, and material blankets are among several practices used to control erosion [2]. Additionally, composted biosolids and blends of biosolids with yard waste are among materials top-dressed or incorporated on constructed soil slopes to control erosion and enhance vegetation establishment [3–5]. Persyn et al. [5] reported 5 or 10?cm blankets of composted biosolids, yard waste, or industrial waste reduced runoff water and sediment compared to exposed subsoil or imported topsoil to high-way construction sites. In a complementary report, Glanville et al. [3] reported top-dressing composted materials decreased nutrient loss in runoff water during a simulated 30?min rain event compared to excavated soil alone. Specifications for the composition and application of composted materials to soil on construction sites vary among SDOTs [6]. Generally, application rates are depth- or
Impact of Indian Mustard (Brassica juncea) and Flax (Linum usitatissimum) Seed Meal Applications on Soil Carbon, Nitrogen, and Microbial Dynamics
Autumn S. Wang,Ping Hu,Emily B. Hollister,Katie L. Rothlisberger,Anil Somenahally,Tony L. Provin,Frank M. Hons,Terry J. Gentry
Applied and Environmental Soil Science , 2012, DOI: 10.1155/2012/351609
Abstract: There is a critical need to investigate how land application of dedicated biofuel oilseed meals affects soil ecosystems. In this study, mustard (Brassica juncea) and flax (Linum usitatissimum) seed meals and sorghum-sudangrass (Sorghum bicolor) were added to soil at levels of 0, 1, 2.5, and 5% (w/w). Both the type of amendment and application rate affected soil organic C, total C & N, and C & N mineralization. Mustard meal amendment initially inhibited C mineralization as compared to flax, but >50% of mustard and flax organic C was mineralized within 51?d. Nitrogen mineralization was similar for flax and mustard, except for the 2.5% rate for which a lower proportion of mustard N was converted to nitrate. The mustard meal greatly impacted microbial community composition, appearing to select for specific fungal populations. The potential varying impacts of different oilseed meals on soil ecosystems should be considered when developing recommendations for land application. 1. Introduction There is currently great interest in the use of various biofuels to supplement fossil fuel supplies. One potential source of biofuels is the production of biodiesel from oilseed crops. Oilseeds, such as soybeans, have been cultivated for hundreds of years with much of the oilseed meal, or press-cake, remaining after oil extraction being used for food, animal feed, or other industrial purposes. However, the cultivation of additional oilseed varieties, at the scale necessary to provide a significant supplement to worldwide demands for fossil fuels, may saturate existing markets for these oilseed meal coproducts [1]. Additionally, in order to avoid competition between food and fuel supplies, there are growing efforts to focus upon and/or develop nonfood oilseed crops that are dedicated to the production of biofuels and other industrial products [2]. However, many of the seed meals from these non-food, dedicated biofuel crops, such as castor, contain compounds or toxins which limit their use as food or animal feed [3–5]. One alternative use for these oilseed meals is as a soil amendment. Oilseed meals contain substantial amounts of N and varying levels of other nutrients needed for plant growth. Additionally, land application of the oilseed meals may increase levels of soil C and contribute positively to the net C effect of biofuels. Although there has been a substantial amount of research on the use of meals from some oil-producing crops as organic fertilizers, there has been a relatively limited amount of research for many of the dedicated oilseed crops [6–8]. The
Bilateral Cooperation between China and Congo-Brazzaville: The Other Side of the Ledger  [PDF]
Nathana?l T. Niambi
Open Journal of Political Science (OJPS) , 2018, DOI: 10.4236/ojps.2018.83016
Abstract: The relation forged between China and Africa during these recent years has been and remains topical at this time. Researchers coming from all over the world say that it is rich, solid, well-rounded, dynamic, ambiguous, win-win, tenuous, etc. Despite all of these paradigms which characterize this South-South approximation, numbers made Beijing a powerful economic partner for Africa nowadays. A relation that has shown a diversified and variable cooperation per country and geopolitical area. In that case, Congo-Brazzaville was one of the first nations in Central Africa to create fraternal relationship with the Middle kingdom. A bilateral cooperation that evolved over time. With this in mind, 53 years later, it would be interesting to make a global assessment of the ties developed between this Asian giant and that small state, sixth oil producer in Africa. Therefore, our main aim will be to carry out a thorough research and to propose some practical ideas to make this bilateral cooperation better. In order to reach this goal, we are going to conduct a desktop study by collecting and analyzing documents and audio-visual materials through a qualitative approach. Besides, we will also report conferences, seminars, interviews and official visits of heads of states including both parts.
China in Africa: Debtbook Diplomacy?  [PDF]
Nathana?l T. Niambi
Open Journal of Political Science (OJPS) , 2019, DOI: 10.4236/ojps.2019.91012
Abstract: The public debt is surely one of the most important challenges of the 21st century for many African countries. For this continent—which has a young and dynamic population—it remains complicated to reach development and financial autonomy as long as it supports a lot of debt obligation. However, that modern African legend of Sisyphus got more interest thanks to China’s return. Indeed, during the last two decades, we have seen Beijing’s investing more in Africa on behalf of a certain old friendship and become the first bilateral commercial partner of the African continent (2009) instead of Western powers. This change created new political and economic contexts swaying between competition and cooperation according to protagonists (governments, national and international economic operators …) and situations. At that stage, the Chinese diplomacy used in Africa has been sometimes perceived as an opportunity, sometimes as a curse by observers. That is why many researchers, influenced by the rumors of a new colonialism, compare it to a “Debtbook Diplomacy”. And because journalists are always only presenting one part of the problem, it is easier to compare Chinese presence in Africa as an invasion. This article’s goal is to make a modest contribution to the long list of papers already written with the purpose to highlight Sino-African relations through a qualitative research (collection, comparison and analysis of documents, interviews, reports …).
Aten??o Farmacêutica em Goiania: inser??o do farmacêutico na Estratégia Saúde da Família
Provin, Mércia Pandolfo;Campos, Andréa de Paula;Nielson, Sylvia Escher de Oliveira;Amaral, Rita Goreti;
Saúde e Sociedade , 2010, DOI: 10.1590/S0104-12902010000300022
Abstract: in agreement with the brazilian national drug policy, the school of pharmacy of universidade federal de goiás, in partnership with the municipal health department of goiania, state of goiás, created and implemented a university development project suggesting the inclusion of the pharmacist in the family health strategy. meetings were held in order to introduce the project to the respective primary care units and to train the teams of pharmacists in the exercise of pharmaceutical assistance. in the 12 months of the project, 50 patients with hypertension (70% female), with average age of 50, were assisted. among those, 40 (80%) presented more than one associated illness and 46 (92%) used 2 or more drugs, simultaneously prescribed. in the study, 154 medication-related problems (mrp) were detected, with an incidence of 3.1 mrp per patient. the most frequent mrp was lack of therapeutic efficacy (49%), and 26.3% of these were caused by lack of treatment adherence. it can be concluded that the health care problems caused by lack of pharmacotherapy efficiency assume important proportions. pharmaceutical care as a strategy of pharmaceutical assistance in family health can be an efficient alternative to obtain better clinical and economic results, and to improve the healthcare provided for users of brazil's national health system.
Working Memory and Reading Development  [PDF]
T. L. Ferreira, C. M. T. Valentin, S. M. Ciasca
Psychology (PSYCH) , 2013, DOI: 10.4236/psych.2013.410A002
Abstract:

Purpose: To evaluate the development of working memory and reading in proficient students from 1st to 4th year of elementary school. Method: Participants were 19 people of both genders, with an average age of 8.26 years, enrolled between the 1st and 4th year of elementary school, who met the proposed inclusion criteria and were proposed and evaluated for working memory and reading level. Results: There’re no significant differences in the level of reading and working memory between genders male and female. The research points to an improved performance of working memory with the increasing age and educational level. The students belonging to the 3rd and 4th year showed better results in the physical assessment of working memory, as well as in the evaluation of the reading level. Conclusion: In this study, it was observed that with the increasing age and schooling, there was an improvement in the performance of working memory, and consequently a better performance in reading. But it cannot be inferred that only the working memory and reading complement themselves bidirectionally, because the literature indicates that other factors also help the development of reading.

Isolation and Characterization of Hydrocarbon Utilizing Yeast (HUY) Isolates from Palm Wine  [PDF]
P. O. Okerentugba, T. L. Ataikiru, T. Ichor
American Journal of Molecular Biology (AJMB) , 2016, DOI: 10.4236/ajmb.2016.62007
Abstract: Several studies have reported on the capabilities of different yeasts to utilize hydrocarbons hence the need to ascertain the petroleum hydrocarbon biodegradation potential of yeast isolated from palm wine. The study aimed at isolation, characterization and testing of yeasts from palm wine for biodegradation of petroleum hydrocarbons. Hydrocarbon utilizing yeasts (HUY) were isolated from palm wine, a rich sugar substrate from a non-oil impacted environment using Bacto Bushnell Haas broth. The medium composed of 0.2 g MgSO4, 0.02 g CaCl2, 1 g KH2PO4, 1 g K2HPO4, 0.05 g FeCl2, 1 g/L NH4NO3, pH (7.2 ± 0.2) and mineral salt broth comprising of 4.4 g KH2PO4, 8 g (NH4)2SO4, 2 g Na2HPO4·H2O, MgSO4·7H2O, 0.1 g FeSO4, 0.01 g/L CaCl2, pH (4.5 ± 0.2) supplemented with palm wine (0.5%) and crude oil (1%). Yeasts isolated from an enriched medium and palm wine showed similarities. Yeast isolates were further screened for hydrocarbon degrading potentials using the Bacto Bushnell Haas broth containing 2, 6-dichlorophenol indophenols as the indicator agent. The isolates were identified using microscopic, macroscopic, fermentation and molecular characteristics as Candida adriatica (ZIM 2468) and Candida taoyuanica (MYA-4700).
Jealousy Induction Methods, Sex, and the Big-5 Personality Dimensions  [PDF]
Jennifer L. Weinstein, T. Joel Wade
Psychology (PSYCH) , 2011, DOI: 10.4236/psych.2011.25080
Abstract: One-hundred and twenty five participants were administered an online survey to investigate: which type of cheating, emotional or sexual, is more likely to be used in an attempt to induce jealousy in a partner, which type of cheating is perceived as most effective for inducing jealousy, and whether or not the Big-5 personality dimensions are related to the choice of jealousy induction technique. Emotional cheating was hypothesized to be selected more often, and given a higher effectiveness rating, than physical cheating for inducing jealousy in a partner. Additionally, men were hypothesized to rate physical cheating as worse than emotional cheating while women were expected to rate emotional cheating as more hurtful. The results were partially consistent with the hypotheses. Emotional cheating was selected as the method to induce jealousy most often and was rated as the most effective way to induce jealousy. However, physical cheating was rated as more upsetting by both men and women. Additionally, Big-5 personality dimensions were not related to choice of jealousy induction method or reactions to physical or emotional cheating. The findings are discussed in relation to prior research.
The Equivalence between the Mann and Ishikawa Iterations for Generalized Contraction Mappings in a Cone  [PDF]
L. Jones Tarcius Doss, T. Esakkiappan
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.211192
Abstract: In this paper, equivalence between the Mann and Ishikawa iterations for a generalized contraction mapping in cone subset of a real Banach space is discussed.
Effect of weather patterns on preweaning growth of beef calves in the Northern Great Plains  [PDF]
M. D. MacNeil, L. T. Vermeire
Agricultural Sciences (AS) , 2012, DOI: 10.4236/as.2012.37113
Abstract: Records from a 76-year investigation into effects of line breeding and selection of Hereford cattle, and concurrent weather records, were used to assess effects of weather patterns on growth of suckling calves. Calf growth data were adjusted for trends arising from selection and inbreeding, and for effects of age of dam and sex of calf to produce clean estimates of year effects. Daily maximum and minimum temperatures were summarized to identify first and last days of a 1500 growing degree growing season. Precipitation was accumulated from: 1) end of the growing season the previous year through 31 December; 2) 1 January through the beginning of the current year growing season; and 3) during the current growing season. Principal components were used to characterize years. Pre-weaning growth of the calves in sets of eight extreme years identified by each of the principal component was contrasted. Irrespective of precipitation pattern before the growing season and with near or above average precipitation during the growing season, calves reared in years characterized by longer, cooler growing seasons grew faster from birth to weaning than in opposing years. This retrospective analysis indicates a general increase in temperature could decrease growth of suckling calves on the Northern Great Plains of North America.
Page 1 /302453
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.