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Submergence Tolerance in Irrigated and Rainfed Lowland Rice Varieties: Agro-Morphological Basis for Rice Genetic Improvement in Southern Benin  [PDF]
Magloire Oteyami, Espérance Codjia, Clement Agbangla, Leonard Ahoton, Carline Santos, David Montcho, Antoine Missihoun
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104304
Abstract:
Objective: The study was carried out, on the rice perimeter of Southern Benin, to evaluate the response of irrigated and lowland rice varieties to the complete and partial submergence using agro-morphological traits. Method: Thus, 15 rice varieties were submerged in the field during 60 days according to split plot experimental design with two factors and three replications. Agro-morphological parameters such as plant height, number of tillers, the distance of internodes and the number of internodes were measured respectively at 13 days and 45 days. After harvest, some traits such as length, width and thickness of grains, panicle length, number of primary and secondary branches, the average number of empty grains and full grains per panicle and 1000-grain weight were recorded. Results: Very highly significant (P ≤ 0.0001) differences were identified between agro morphological parameters according to the type of submergence while the factor type of immersion has significant influence on the number of internodes at 45 days after transplanting (P ≤ 0.01). The submergence was not significant effect on tillering and length of internodes. Conclusion: The plant height, the weight of thousand grains and the average number of empty grains per panicle constitute key aspects and have been essential for evaluating tolerance to submergence in Benin.
Analyse économique de la production de purée de tomate à petite échelle au Bénin
Dossou, J.,Soulé, I.,Montcho, M.
Tropicultura , 2006,
Abstract: Economic Study of Small Scale Tomato Paste Production in Benin. Economic study of tomato paste was performed for two localities (Ketou and Dogbo) of high production of tomato in Benin. For a plant capacity of 10 tons of raw tomatoes per year, with tomato juice concentrated at 13% Natural Tomato Soluble Solids (NTSS) and 20.69% of material balance, the production cost of a glass-jar of 275 g (net weight) is 204.87 F and the profi tability at 15.54% at Ketou. In this locality, the break-even point is estimated at 471.08 kg of paste or 2.28 T of fresh tomato. On the other hand, at Dogbo where the production cost was higher (218.34 F), the profi tability is estimated at 8.4% and the break-even point at 683.65 kg of paste or 3.3 T of fresh tomato. In conditions of good management, the two units are profi table from the fi rst year. Optimisation of energy use in dehydration of tomato juice will enhance interest in small scale tomato paste production in Benin.
Relationship Between Sewage Treatment Efficiency and Bacterial Community Diversity in an A/O MBR
A/O MBR处理生活污水效率与菌群多样性的关系

KUANG Bin-yu,SHI Qing,Montcho Leon Monthero,DING Man,WEN Dong-hui,
邝斌宇
,史青,Montcho Leon Monthero,丁嫚,温东辉

环境科学 , 2012,
Abstract: An Anoxic/Oxic Membrane Bioreactor (A/O MBR) was used to treat sewage. Five different working conditions were run to determine the optimal process parameters. Bacterial community structures in both anoxic and oxic tanks were analyzed using denaturing gradient gel electrophoresis (DGGE). The relationship between effluent water quality and bacterial community diversity was established. The experimental results indicated that, under the optimal parameters of hydraulic retention time (HRT) 12 h, sludge retention time (SRT) 10 d, reflux ratio of nitrified effluent 300%, and reflux ratio of sludge 100%, the A/O MBR removed COD, NH4+-N, and TN effectively and stably with the average removal rates of 96.4%, 99.1% and 75.8%, respectively. The bacterial communities varied markedly in both anoxic and oxic tanks during the sewage treatment experiment. Under a same working condition, the communities in both tanks were often similar with a similarity of more than 50%. The community diversity of the anoxic tank fluctuated depending on different working conditions, while the diversity of the oxic tank increased steadily along with the operation time. A positive correlation between the bacterial community diversity of the anoxic tank and the denitrification efficiency of the A/O MBR was established.
The influence of the different elements of an organic molecule structure on the main kinetic parameters of its unimolecular reaction in the high-pressure region  [PDF]
David Krinkin
Natural Science (NS) , 2011, DOI: 10.4236/ns.2011.38090
Abstract: The most general dynamic tendencies of the energy redistribution in the high-pressure region are considered. Their influence on the possible deviations from the kinetic conceptions, which is now generally accepted, is examined. In this way, the structural elements of an organic molecule that promote internal energy mobilization in the high-pressure region and, conversely, hamper it, are defined. The first of these elements reduces both the Arrhenius parameters of the unimolecular reactions while the second leads to the opposite results. Some well-known exceptions to existing kinetic theories, which find an explanation in the framework of these proposed concepts, is considered. The proposed concept is very general as distinct from the existing dynamic studies, which investigate more particular details of the separate bond behaviors. The proposed general concept can broaden the study of chemical kinetics.
Raising Engagement and Enhancing Learning: School Community Partnerships That Work for Students at Promise  [PDF]
David Zyngier
Creative Education (CE) , 2011, DOI: 10.4236/ce.2011.24053
Abstract: This paper reports on a pilot study that investigates the widely reported issue of underachievement of students from Culturally Linguistically and Economically Diverse (CLED) backgrounds. It involves 15 university education faculty student volunteers and over 40 students and their families in primary (elementary) schools situated in disadvantaged communities of Victoria whose students come from 40 different nationalities, speaking 36 languages and with 75 per cent of its student cohort coming from Non English Speaking Backgrounds. A partnership was formed to focus on the problem of CLED children’s disengagement from their academic learning. We focus on how a productive partnership between schools and a university impact on inclusive teaching and learning practices both at the school and the university level. We investigate whether such an intervention can have an impact on engagement levels and the learning and social outcomes of students from refugee, migrant and working class families. Privileging participant voice we analyze data from interviews, surveys and focus groups with students, teachers and parents to argue that such a program has the capacity to re-engage underachieving students at a minimal cost to the community as an alternative model to other expensive and unsuccessful intervention programs. We conclude that at the core of this successful program is the need for both participants to feel they are empowered in the process. We know that student outcomes can be enhanced when the students feel connected to and involved in their community. Through this project, the students have the opportunity to experience greater community engagement leading to improved school attendance and retention, as well as better academic outcomes.
A Simple Proof That the Curl Defined as Circulation Density Is a Vector-Valued Function, and an Alternative Approach to Proving Stoke’s Theorem  [PDF]
David McKay
Advances in Pure Mathematics (APM) , 2012, DOI: 10.4236/apm.2012.21007
Abstract: This article offers a simple but rigorous proof that the curl defined as a limit of circulation density is a vector-valued function with the standard Cartesian expression.
“Your Guide to Paediactric Anesthesia” by Sims and Johnson: A Book Review  [PDF]
David Faraoni
Open Journal of Anesthesiology (OJAnes) , 2012, DOI: 10.4236/ojanes.2012.21003
Abstract: “Your Guide to Paediatric Anaesthesia”by Sims and Johnson is the first edition of a book written for fellow or non-pediatric anesthetists. The authors give a practical approach for daily practice in pediatric anesthesia. This \"book review\" describes a general presentation and an objective evaluation of this recently published book.
On Choosing Fourier Transforms for Practical Geoscience Applications  [PDF]
David Boteler
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.325096
Abstract: The variety of definitions of Fourier transforms can create confusion for practical applications. This paper examines the choice of formulas for Fourier transforms and determines the appropriate choices for geoscience applications. One set of Discrete Fourier Transforms can be defined that approximate Fourier integrals and provide transforms between sampled continuous functions in both domains. For applications involving transforms between a continuous function and a discrete function a second set of Discrete Fourier Transforms is needed with different scaling factors. Two classes of application are presented: those where either form of transforms can be used and those where it is necessary to use a particular transform to obtain the correct results.
Investment Incentives under Price-Cap Regulation  [PDF]
David Bartolini
Theoretical Economics Letters (TEL) , 2012, DOI: 10.4236/tel.2012.25105
Abstract: In the literature on price regulation, the price-cap mechanism is seen as a very powerful incentive mechanism towards efficiency improvements. What about quality investments? The empirical literature is not univocal: Some studies suggest a deterioration of quality, while others do not find any statistically significant impact. We analyze the incentive provided by price-cap regulation in a setting in which the investment decisions of the regulated firm suffer from hold-up, and contacts are incomplete. We show that the incentives to invest in cost-saving innovations can be fostered by a price-cap contract with a “sufficient” regulatory lag, while for other types of investments, such as quality enhancement, the same contract does not help. Furthermore, we show that if the firm faces a binding resource constraint the price-cap contract generates a crowding-out effect between the two types of investment. This might explain the non univocal empirical evidence.


IMPEX: An Approach to Analyze Source Code Changes on Software Run Behavior  [PDF]
David Nemer
Journal of Software Engineering and Applications (JSEA) , 2013, DOI: 10.4236/jsea.2013.64020
Abstract:

The development of software nowadays is getting more complex due to the need to use software programs to accomplish more elaborated tasks. Developers may have a hard time knowing what could happen to the software when making changes. To support the developer in reducing the uncertainty of the impact on the software run behavior due to changes in the source code, this paper presents a tool called IMPEX which analyzes the differences in the source code and differences on the run behavior of two subsequent software versions, in the entire repository, demonstrating to the developer the impact that a change in the source code has had on the software run, over the whole software history. This impact helps the developers in knowing what is affected during execution due to their changes in the source code. This study verifies that the software runs that are most impacted by a given change in the source code, have higher chances in being impacted in the future whenever this part of the code is changed again. The approach taken in this paper was able to precisely predict what would be impacted on the software execution when a change in the source code was made in 70% of the cases.

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