Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2020 ( 6 )

2019 ( 808 )

2018 ( 1110 )

2017 ( 1050 )

Custom range...

Search Results: 1 - 10 of 593131 matches for " L. A. "
All listed articles are free for downloading (OA Articles)
Page 1 /593131
Display every page Item
Decomposition of Solutions in Front of the Interface Induced by Directional Crystallization  [PDF]
A. Guskov, L. Nekrasova
Journal of Crystallization Process and Technology (JCPT) , 2013, DOI: 10.4236/jcpt.2013.34026

Here we show the results of experimental observation of decomposition of the solution components into the neighboring cells. The liquid solution under crystallization first gets into the unstable state and then decomposes. The decomposition result is fixed in the solid phase as inhomogeneous component distribution. Our experimental results enable to argue that the eutectic pattern forms due to interface instability and spinodal decomposition of non-equilibrium solution forming in front of the interface.

Combining Likelihood Information from Independent Investigations  [PDF]
L. Jiang, A. Wong
Open Journal of Statistics (OJS) , 2015, DOI: 10.4236/ojs.2015.51007
Abstract: Fisher [1] proposed a simple method to combine p-values from independent investigations without using detailed information of the original data. In recent years, likelihood-based asymptotic methods have been developed to produce highly accurate p-values. These likelihood-based methods generally required the likelihood function and the standardized maximum likelihood estimates departure calculated in the canonical parameter scale. In this paper, a method is proposed to obtain a p-value by combining the likelihood functions and the standardized maximum likelihood estimates departure of independent investigations for testing a scalar parameter of interest. Examples are presented to illustrate the application of the proposed method and simulation studies are performed to compare the accuracy of the proposed method with Fisher’s method.
Influence of Thioctic Acid on the Hyperinsulinemia and Ovarian Volume in Female Patients with Polycystic Ovary Syndrome  [PDF]
L. A. Ivanova
Open Journal of Endocrine and Metabolic Diseases (OJEMD) , 2015, DOI: 10.4236/ojemd.2015.54005
Abstract: 45 female patients with polycystic ovary syndrome took thioctic acid (Thioctacid-HR), 600 mg (n = 25) or high protein diet (n = 20). Fast insulin and glucose stimulus insulin were investigated before and after 3 months taken treatment. The use of thioctic acid, 600 mg is a new effective pathogenetics therapy of polycystic ovary syndrome on influence of hyperinsulinemia, HOMA-IR index and ovary volume in female patients with polycystic ovary syndrome.
Biquaternionic Model of Electro-Gravimagnetic Field, Charges and Currents. Law of Inertia  [PDF]
L. A. Alexeyeva
Journal of Modern Physics (JMP) , 2016, DOI: 10.4236/jmp.2016.75045
Abstract: One the base of Maxwell and Dirac equations the one biquaternionic model of electro-gravimagnetic (EGM) fields is considered. The closed system of biquaternionic wave equations is constructed for determination of free system of electric and gravimagnetic charges and currents and generated by them EGM-field. By using generalized functions theory the fundamental and regular solutions of this system are determined and some of them are considered (spinors, plane waves, shock EGM-waves and others). The properties of these solutions are investigated.
Biquaternionic Form of Laws of Electro-Gravimagnetic Charges and Currents Interactions  [PDF]
L. A. Alexeyeva
Journal of Modern Physics (JMP) , 2016, DOI: 10.4236/jmp.2016.711121
Abstract: One the base of differential algebra of biquaternions, the one model of electro-gravimagnetic interactions of electric and gravimagnetic charges and currents has been constructed. For this, three Newton laws analogues are used. The closed system of biquaternionic wave equations is constructed for determination of the charges-currents and electro-gravimagnetic fields and united field of interactions. The equation of charge-current transformation is like the generalization of biquaternionic presentation of Dirac equation. The properties of its solutions are described, depending on properties of external EGM field. The biquaternions of energy-pulse of EGM-field and charges-currents are considered. The energy-pulse of EGM-interactions is calculated.
A Brief History of Industrial Robotics in the 20th Century  [PDF]
A. Gasparetto, L. Scalera
Advances in Historical Studies (AHS) , 2019, DOI: 10.4236/ahs.2019.81002

Industrial robotics is a branch of robotics that gained paramount importance in the last century. The presence of robots totally revolutionized the industrial environment in just a few decades. In this paper, a brief history of industrial robotics in the 20th century will be presented, and a proposal for classifying the evolution of industrial robots into four generations is set forward. The characteristics of the robots belonging to each generation are mentioned, and the evolution of their features is described. The most significant milestones of the history of industrial robots, from the 1950’s to the end of the century, are mentioned, together with a description of the most representative industrial robots that were designed and manufactured in those decades.

Quantization and Stable Attractors in a DissipativeOrbital Motion  [PDF]
Daniel L. Nascimento, Antonio L. A. Fonseca
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.24030
Abstract: We present a method for determining the motion of an electron in a hydrogen atom, which starts from a field Lagrangean foundation for non-conservative systems that can exhibit chaotic behavior. As a consequence, the problem of the formation of the atom becomes the problem of finding the possible stable orbital attractors and the associated transition paths through which the electron mechanical energy varies continuously until a stable energy state is reached.
Dominant Lactic Acid Bacteria and Their Antimicrobial Profile from Three Fermented Milk Products from Northern Namibia  [PDF]
L. N. Heita, A. Cheikhyoussef
Journal of Biosciences and Medicines (JBM) , 2014, DOI: 10.4236/jbm.2014.29002

The present study focused on the isolation, identification and antimicrobial profile of the dominant lactic acid bacteria from three traditional fermented milk products namely: Omashikwa, Mabisi and Mashini Ghamushikwa from the north-central and north-eastern parts of Namibia. The microbiological and antimicrobial activities of these products fluctuate from one region to another depending on the local indigenous microflora. Omashikwa and Mashini Ghamushikwa fermentation processes involves the addition of Boscia albitrunca root (Omunkuzi) and butter churning. The root contributes to the flavor of the product, increasing the milk fermentation rate and churning. Mabisi is produced by letting the milk to ferment naturally until the water is separated from the whey. The water is then decanted, and the whey is shaken until it is smooth without removal of fat. A total of 180 isolates of Lactic acid bacteria (LAB) were obtained and identified based on their phenotypical characterization. Cell free supernatants (CFS) of the 180 LAB isolates were evaluated for antimicrobial activities against selected food borne pathogens; Escherichia coli ATCC 25,922, Staphylococcus aureus ATCC 25,923, Bacillus cereus ATTC 10,876, Candida famata and Geotrichum klebahnii using the well diffusion assay. Twenty LAB isolates having the highest inhibitory effects were selected for biochemical identification using API 50 kit and these were identified as being; Lactobacillus plantarum (53%), Lactobacillus rhamnosus (29%), Pediococcus pentosaceus (6%), Lactobacillus paracasei ssp. paracasei (6%) and Lactococcus lactic ssp. lactis (6%). Pediococcus pentosaceus showed the highest inhibitory effect on all the indicator strains. This study provides an insight into LAB diversity of unstudied Namibian fermented milk products and reports a potential production of antimicrobial compounds which is significant in the standardization of protective starter cultures which can be used to control fermentation process and shelf life extension of dairy products in Namibia.

Building a Methodology for the Design of an Environmental Services Payment Programme for the Mangroves of Mexico  [PDF]
Tania García López
Open Journal of Ecology (OJE) , 2018, DOI: 10.4236/oje.2018.83010
Abstract: Environmental Services Payment Programmes are not entirely new and they are more flexible than the usual command-and-control type of regulation. In the 1990s for example, an Environmental Services Payment programme was introduced to cope with the forestry system and pay benefits to farmers for the good that their forests would produce. This review examines the possibility of using Environmental Services Payment programmes for Mexican mangroves as they are an important resource against natural disasters, and reducing greenhouse gases in the Earth’s atmosphere, for example, and they are constantly invaded by the human race which impacts on their destruction. The review aims at constructing a methodology that can be applied to the implementation of Environmental Services Payment programmes. The value of this study is in aiming a straight arrow at the environmental problems outlined in this paper, problems that have not been fully resolved to date, especially in Mexico where it is not officially recognised that mangroves play an important role in the mitigation of greenhouse gases. Furthermore, Environmental Services Payment Programmes in Mexico have not pinpointed specific types of area. We conclude this paper with elaborating on our ten-point strategy for implementing Environmental Services Payment programmes which includes, in brief: 1) Fully accepting the importance of the mitigation of greenhouse gases via mangroves; 2) designing a Environmental/Ecosystem Services Payment Programme with particular emphasis on Mexican mangroves; 3) identifying specific environmental services and their level from local to international; 4) formation and implementation of a system of “whoever benefits must pay”; 5) building of a knowledge base of owners and others who benefit from environmental services; 6) hypothetical models of particular Environmental Services Payment programmes must be constructed; 7) clarifying who must pay; 8) grouping all sectors that must pay; 9) inspiring all actors to cooperate via 10) the impact of a Citizens’ Council, for example.
Global Estimation of the Cauchy Problem Solutions’ the Navier-Stokes Equation  [PDF]
A. A. Durmagambetov, L. S. Fazilova
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.24003

The analytic properties of the scattering amplitude are discussed, and a representation of the potential is obtained using the scattering amplitude. A uniform time estimation of the Cauchy problem solution for the Navier-Stokes equations is provided.

Page 1 /593131
Display every page Item

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