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Search Results: 1 - 10 of 7170 matches for " Adilson Beatriz "
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Glycerol: Problem or solution? - That is the question Glicerol: problema ou solu o? Eis a quest o
Adilson Beatriz
Orbital : the Electronic Journal of Chemistry , 2009,
Abstract:
Editorial: Glycerol: Problem or solution? - That is the question/Glicerol: problema ou solu o? Eis a quest o
Adilson Beatriz
Orbital : the Electronic Journal of Chemistry , 2009,
Abstract: In 2004 the Brazilian Program for Biodiesel Production and Use (PNPB) was launched by the Federal Government, aimed at the production of alternative, non-fossil fuels and, more broadly, at the country’s economic development [1]. On January 13, 2005, Law 11097 was passed, establishing the inclusion of biodiesel in Brazil’s energy balance and mandating the addition of 2% biodiesel (B2) to the composition of diesel by 2008, a ratio to be increased to 5% by 2013 (B5) [1, 2]. Because all diesel oil sold in Brazil has contained as much as 3% of biodiesel (B3) since 2008, a glycerol surplus of the order of 100 000 tons a year is now projected for the Brazilian market—a huge increase from the traditional domestic production of around 30 000 tons a year. In 2013, when the B5 standard goes into effect, the yearly output of glycerol is forecast at 250 000 tons [3]. In the European Union, fuels for vehicles will be required to contain at least 5.75% of biocomponents obtained from renewable sources by the end of 2010. If this target is achieved, it should increase the European demand for biodiesel to over 10 million tons a year by 2010, leading to an annual generation of nearly 1 million tons of glycerol as a co-product...........
Recent Advances in the Chasing for Organic Compounds with Potential Anti-Leishmania Activity [Progressos Recentes na Pesquisa de Compostos Organicos com Potencial Atividade Leishmanicida]
Ana C. Micheletti,Adilson Beatriz
Revista Virtual de Química , 2012,
Abstract: Infectious diseases that predominantly affect people in poorer nations, such as leishmaniasis, dengue, malaria and Chagas’ disease, have been ignored by the pharmaceutical companies and, therefore, are often referred to as neglected disease and tend to be left out of the modern process of drug discovery. Leishmaniasis comprises a spectrum of diseases that affect humans and other mammals in tropical and subtropical regions of the earth, and are caused by at least 20 kinds of parasites belonging to the genus Leishmania, with diverse and complex clinical manifestations. They occur in more than 88 nations, and Brazil is one of the most important endemic countries, sharing with India, Sudan, Nepal and Bangladesh about 90% of cases of visceral leishmaniasis, which is a progressive and fatal disease. The treatment for this illness includes the administration of highly toxic drugs, such as pentavalent antimonials, amphotericin B and pentamidine, setting it in a weak therapeutic arsenal, with reports of development of resistance. This review article aims to highlight recent contributions of the chemistry science in the development of new compounds with leishmanicidal properties, including a discussion of the results of the last two years, related to natural and synthetic compounds, as well as indication of new therapeutic targets and innovations in current therapies.
Editorial
Adilson Beatriz,Marcos Serrou do Amaral
Orbital : the Electronic Journal of Chemistry , 2010,
Abstract: It is with great satisfaction that we are launching the second volume of Orbital – The Electronic Journal of Chemistry. Making a project of this scope a reality represents a herculean—if not quixotic—effort, but a generous dose of both determination and dauntlessness helped us set in motion the editorial process that has brought the latest edition of this online journal to fruition. This endeavor has been made less arduous and more feasible by the tireless collaboration of our invaluable ad hoc peer reviewers and Editorial Board members. We also wish to express our thanks to the Universidade Federal de Mato Grosso do Sul for the pivotal institutional support provided and to the many authors who have demonstrated their faith in us by submitting scientific papers for review.........
Editorial Editorial Editorial
Adilson Beatriz,Marcos Serrou do Amaral
Orbital : the Electronic Journal of Chemistry , 2010,
Abstract:
Editorial: Chemistry: A key science to fight neglected diseases/Química: Ciência central para combater doen as negligenciadas
Adilson Beatriz,Dênis Pires de Lima
Orbital : the Electronic Journal of Chemistry , 2009,
Abstract: Over the past century, chemical and pharmaceutical industries have made substantial strides in the development of new pharmaceuticals for a range of human diseases. Discovering and developing new drugs are part of a costly process that involves not only the search for new drug candidates, but also the performance of clinical trials. It is not uncommon to find reports of costs reaching US$ 500 million—and even US$ 1 billion—engaging multidisciplinary teams for periods of 10 or 15 years. To a large extent, these costs are borne by consumers in richer countries. In contrast, diseases that predominantly affect residents of poorer nations tend to be left out of the modern process of drug discovery. Moreover, most of the world population stricken by these illnesses is incapable of supporting the costs involved in developing the drugs they need. Because these infirmities, with few exceptions, have been ignored by those in charge of research programs, both in the public and private sectors, they have been referred to as neglected diseases. On its website, the World Health Organization categorizes 14 health conditions as “tropical diseases,”.......................
Chemistry: A key science to fight neglected diseases Química: Ciência central para combater doen as negligenciadas
Adilson Beatriz,Dênis Pires de Lima
Orbital : the Electronic Journal of Chemistry , 2010,
Abstract:
Four years of crusade! Quatro anos de luta!
Adilson Beatriz,Dênis Pires de Lima
Orbital : the Electronic Journal of Chemistry , 2012,
Abstract: Orbital - The Electronic Journal of Chemistry is entering its 4th year of existence which is a reason to celebrate. A great work has been devoted to preserve a scientific journal of international reputation. This work was not always without mistakes or any trouble. However, these very adversities stimulate additional efforts in order to overcome our errors and, continuing with our serious proposal of editing a journal which scientists from all over the world can submit online their original works manuscripts to be published in peer review and open-access style. Beginning this year, Orbital was classified by the Chemistry Coordination Area on the B5 rank of CAPES Qualis (Brazil) and, leveled as B4 by Coordination Areas of Materials and Engineering II. These important details demonstrate that Orbital is progressively attaining the acknowledgment of the Brazilian scientific community. The recognition by CAPES Qualis is crucial as the system evaluates the generation of knowledge in the Brazilian universities and the method by which this same knowledge disseminated to society. Not all these were possible without endeavoring of editors and volunteer assistance of advisors from several national and international institutions. Recently, the young Professors Kleber Thiago de Oliveira (UFSCAR), Grégoire Demetz (USP-RP) and Amilcar Machulek Júnior (UFMS) have joined us to share the idea and philosophy of Orbital by accepting our invitation to be associated editors. The tasks and challenges are enormous and, we are sure that new participants will support us on the way to achieve indexation in new Databases systems as SCOPUS, ISI and Scielo. Consequently, the international success of this electronic journal will be assured. We sincerely hope that in the academic Brazilian scenario, Orbital can figure as a solid bridge to interchange real creative science that is happening in various locations around the world. A revista Orbital está comemorando seu quarto ano de existência. Um grande esfor o tem sido dedicado para cumprir nosso objetivo de torná-la uma revista científica de reputa o internacional. Todo o trabalho devotado n o foi sempre sem erros nem problemas. No entanto, as próprias adversidades serviram de estímulos adicionais para superarmos nossas falhas e continuarmos nossa proposta séria de editar um jornal onde cientistas de todo o mundo possam submeter seus trabalhos originais para serem publicados em um processo de revis o por pares e de acesso livre. No início deste ano, a revista Orbital foi classificada com QUALIS B5 pela Coordena o da área de Química
Comportamento de estridula??o em Heilipus odoratus Vanin & Gaiger (Coleoptera, Curculionidae, Molytinae)
Nunes, Adilson Benchaya;Ronchi-Teles, Beatriz;Spironello, Wilson;
Revista Brasileira de Entomologia , 2009, DOI: 10.1590/S0085-56262009000300004
Abstract: heilipus odoratus vanin & gaiger, 2005 (coleoptera, curculionidae, molytinae) is considered the main plague of rosewood fruit. being recently described, the biological aspects of this species are not very well known. this study aimed at contributing for the knowledge of this species' behavior and providing a method for sexing adults based on stridulation. individuals were divided into two groups: stridulating and non-stridulating. after dissection, stridulation was associated with the sex of each individual. most males (92.2 %, n= 115) emitted sound by stridulation due to the presence of stridulatory organs on the posterior internal surface of their elytra and penultimate tergite, while none of the females (n=92) have such organs. this result is the first report of stridulatory activity in h. odoratus.
Study about synthesis of polyarylacetylenes using cardanol and glycerol as raw materials Estudo sobre a síntese de poliarilacetilenos utilizando cardanol e glicerol como matérias-primas
Tatiana Matayoshi,Dênis P. Lima,Adilson Beatriz
Orbital : the Electronic Journal of Chemistry , 2012,
Abstract: Recently, studies aiming to preparation of nanomaterials for application in high technology areas are very advanced in developed countries. Liquid crystals have a vast application and for that; many researches are focused on the development of these special molecules. Polyarylacetylenes are polymers that can hold helicity if polymerization of the monomer occurs in the presence of appropriate metal catalysts. The aiming of this work is to prepare side-chain crystal-liquid helicoidal chiral polymers. These systems show a molecular structure in which the mesogenic unity (pendant) is sided-attached to the polymeric chain. If a chiral substituent is incorporated to the monomer, it will induct chirality of the polymer. Glycerol [1] and cardanol [2], obtained from renewable source, were formally coupled to form the epoxide 1 that in turn was treated with 4-ethylanyline in CHCl3 at 120 oC in a sealed tube in the presence of pyridine, furnishing monomer 2 (40%). The next step it will be the enzymatic resolution of the alcohol 2 in order to achieve optical pure 2. Sequentially, from monomer 2, it is going to be synthesized the targeted stereoregular cis-trans polymer following known procedures, using [Rh(nbd)Cl]2 (nbd=2,5-norbornadiene) as the catalyst [4]. Atualmente, estudos visando prepara o de nanomateriais para aplica es em áreas de alta tecnologia est o muito avan ados em países desenvolvidos. Cristais líquidos possuem uma gama enorme de aplica es e por isso, muitas pesquisas est o focadas no desenvolvimento dessas moléculas especiais. Poliarilacetilenos s o polímeros que podem apresentar helicidade se a polimeriza o do mon mero ocorrer na presen a de catalisadores de metais apropriados. O objetivo neste trabalho é preparar polímeros helicoidais líquido-cristalinos quirais de cadeia lateral. Estes sistemas apresentam uma estrutura molecular na qual a unidade mesogênica (pendante) é fixada lateralmente à cadeia polimérica. Se um substituinte quiral for incorporado ao mon mero, este será responsável pela indu o da quiralidade do polímero. Glicerol [1] e cardanol [2], obtidos de fontes renováveis, foram formalmente acoplados para formar o epóxido 1 que, por sua vez, foi tratado com 4-etinilanilina em CHCl3 a 120 oC, em tubo selado e na presen a de piridina, obtendo-se o mon mero 2 (40%). A próxima etapa do trabalho será a resolu o enzimática do álcool 2 [3] para obtermos o mon mero 2 com pureza óptica. Na sequência, a partir do mon mero 2, o polímero desejado com estrutura estereorregular cis-transóide será preparado seguindo procedimentos conhecidos,
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