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Apr 02, 2020Open AccessPreprint
The present work aims to elaborate a review of the geochemical aspects used to compose the Raw Water Quality Index (WQI), highlighting lake environments and their importance for management practices. This paper is a bibliographic review based on specialized scientific and legislative literature conducted between April 2016 and March 2019. The scientific articles were selected by searching the Scielo database and the Periódicos Capes and the database search was performed using the terminologies r...
Aug 29, 2017Open AccessPreprint
Ynones, also known as α, β-acetylenic ketones, have been widespread used in modern synthetic organic chemistry. They exist in biologically active compounds, and are used as vital building blocks in complex molecule synthesis. Consequently, a number of methodologies involving ynones have been developed to access a wide range scaffold using this simple building block. In this paper, the synthesis of a ferrocene tertiary amine cyclop
Mar 22, 2017Open AccessPreprint
The article considers physical properties of photon as a quantum of electromagnetic wave in luminiferous medium. An experimental evaluation method for its energy and mass based on radiation pressure effect was presented. The of “photon amplitude” concept was introduced, through which energy is represented similarly to quantum (phonon) energy of elastic mechanical wave. A model of photon as a wave packet in the medium was considere
Sep 27, 2016Open AccessPreprint
Sclerosis (MS) is the most common disability in young adults that requires
early symptomatic treatment to prevent long-term disability. Among young
adults, MS is the most common central nerv-ous system (CNS) chronic
inflammatory illness that is characterized by demyelination in the CNS.
However, current disease-modifying treatments are not sufficiently effective
for preventing the variety of symptoms during the co
Aug 10, 2016Open AccessPreprint
Recently, it was published the book “Electromagnetic Unification of Four Forces”(ISBN978-3-659-76798-2), compiling the progressions in physics manifested in television, made by the world people while led notably by the author and the Members in the world satellite networks from India, ZheJiang and USA. Besides these significant achievements, it has also been made many activities and achievements on neural sciences. In this article
Mar 03, 2016Open AccessPreprint
The paper draws attention to the importance of the notion “luminiferous ether” in physics. There is a proposed method to register its flows generated by natural cosmic movements or created artificially. The work presents the results of ether wind searching with a prototype of the proposed installation located at the altitude of <30 m above sea level. Ether flows with speeds > 20 km/s are not found, which is consistent with the results of previous experiments.
Jul 21, 2015Open AccessPreprint
Dynamics of uniaxial nematic liquid crystals with rod-shaped and disc-shaped molecules in an external field is considered. For the systems under study thermodynamics is constructed and nonlinear dynamic equations accounting for the internal spatial anisotropy and molecules shape are derived. Densities of additive integrals of motion and corresponding flow densities are introduced in terms of thermodynamic potential. Analytical structure of low-frequency asymptotics of two-time Green’s functions ...
May 13, 2015Open AccessPreprint
In the present study, Kandelia obovata (S.,
L.) Yong seedlings were exposed to As V(0, 30, 60 and 150 mg kg-1) under
different levels of sulfur (0, 0.1, 0.2 and 0.4% (w: w)) supply. A highly
significant negative correlation between arsenic concentration in leaves with sulfur
treatment (r=-0.554, P...
Apr 29, 2015Open AccessPreprint
The present work
describes the validation of an analytical method for chromatographic
determination of chlorimuron ethyl herbicide (compound of sulphonylurea group)
in sediments, in according with Brazilian legislation, following the guidance
and normative documents of INMETRO (DOQ-CGCRE-008) and ANVISA (Resolution RE no
899 - 2003). The results show that the chromatographic method demonstrated to
be selective, accurate, precision and linear over the concentration range of
5.0-1000.0 ug L-1...
Mar 23, 2015Open AccessPreprint
study was conducted in gedarif research station farm for two seasons in 2013
and 2014. The objective was to determine optimum seed rate and time of
harvesting mungbean for green forage and hay under rain fed conditions. The
results showed different significant in three stage of cutting and three seed
rate at different parameter as indicated by plant height, plant number, branch
number, leave number and dry weight. The result showed highly significant
between vegetative and boding stage. In ...