1000 resultados para Linhas de produtos de software
Resumo:
Itraconazole is a synthetic antifungal drug administered orally with a broad spectrum of activity against mycotic infections. The present work consists of the development and validation of analytical methodology for evaluation of itraconazole in pharmaceutical products by high performance liquid chromatography. The separation was made using the reversed-phase column LC-18, acetonitrile/diethylamine 0.05% v/v, 60:40 v/v, pH 8.0 as mobile phase, methanol as solvent and detection and quantification at 254 nm. The results here obtained show that the analytical methodology is accurate, reproducible, robust and linear over the concentration range 8.0-12.0 g/mL of itraconazole. The method was applied to pharmaceutical capsules containg itraconazole pellets and showed to be efficient, yielding good results.
Resumo:
This study proposes the low temperature pyrolysis as an alternative conversion process for residual biomass and for obtaining gaseous, liquid and solid chemical feedstocks. Using a bench electrical pyrolysis oven, four product fractions from eucalyptus sawdust were obtained: a gaseous one, two liquid (aqueous and oily), and a solid residue (char). These products were characterized by different analytical methods. The liquid fractions showed themselves as potential sources for input chemicals. The residual char revealed appreciable adsorption capability. The process demonstrated good efficiency, generating at least two fractions of great industrial interest: bio oil and char.
Resumo:
The investigation of extracts from six species of marine invertebrates yielded one new and several known natural products. Isoptilocaulin from the sponge Monanchora aff. arbuscula displayed antimicrobial activity at 1.3 mg/mL against an oxacillin-resistant strain of Staphylococcus aureus. Five inactive known dibromotyrosine derivatives, 2 6, were isolated from a new species of marine sponge, Aplysina sp. The sponges Petromica ciocalyptoides and Topsentia ophiraphidites yielded the known halistanol sulfate A (7) as an inhibitor of the antileishmanial target adenosine phosphoribosyl transferase. The ascidian Didemnum ligulum yielded asterubin (10) and the new N,N-dimethyl-O-methylethanolamine (11). The octocoral Carijoa riisei yielded the known 18-acetoxypregna-1,4,20-trien-3-one (12), which displayed cytotoxic activity against the cancer cell lines SF295, MDA-MB435, HCT8 and HL60.
Resumo:
This paper presents an overview of the Natural Products Research in Brazil in the last five years (2002-2006), and also discusses how some relevant aspects of the Chemical Biology area could create new research opportunities and challenges for the natural product chemists. In addition, some aspects of the scientific policies and their impact on current projects are discussed.
Resumo:
El software lliure est tenint ltimament un pes cada cop ms important en les empreses, per encara s el gran desconegut per a molta gent. Des de la seva creaci als anys 80 fins ara, hi ha hagut un creixement exponencial de software lliure de gran qualitat, oferint eines per a tot tipus de necessitats, eines ofimtiques, gestors de correu, sistemes de fitxer, sistemes operatius. Tot aquest moviment no ha passat desapercebut per a molts usuaris i empreses, que shan aprofitat dell per cobrir les seves necessitats. Pel que fa a les empreses, cada cop nhi ha ms que en petita o gran mesura, utilitzen el software lliure, ja sigui per el seu menor cost dadquisici, o b per la seva gran fiabilitat o per que s fcilment adaptable o per no establir cap lligam tecnolgic, en definitiva per tenir ms llibertat. En el moment de la creaci duna nova empresa, on es parteix de zero en tota la tecnologia informtica, s el moment menys costs dimplementar larquitectura informtica amb software lliure, s quan limpacte que t sobre lempresa, usuaris i clients s menor. En les empreses que ja tenen un sistema informtic, caldr establir un pla de migraci, ja sigui total o parcial. La finalitat daquest projecte no s la de dir quin software s millor que laltre o de dir quin sha dinstallar, sin el de donar a conixer el mn del software lliure, mostrar part daquest software, fer alguna comparativa de software lliure amb software propietari, donant idees i un conjunt de solucions per a empreses, per qu una empresa pugui agafar idees dimplementaci dalgunes de les solucions informtiques exposades o seguir algun dels consells proposats. Actualment ja hi ha moltes empreses que utilitzen software lliure. Algunes noms nutilitzen una petita part en les seves installacions, ja que el fet de que una empresa funcioni al 100% amb software lliure, tot i que nhi comena ha haver, de moment ho considero una mica arriscat, per que en poc temps, aquest fet ser cada cop ms habitual.
Resumo:
El departament delectrnica i telecomunicacions de la Universitat de Vic ha dissenyat un conjunt de plaques entrenadores amb finalitat educativa. Perqu els alumnes puguin utilitzar aquestes plaques com a eina destudi, s necessari disposar dun sistema de gravaci econmic i cmode. La major part dels programadors, en aquest cas, no compleixen amb aquests requeriments. Lobjectiu daquest projecte s dissenyar un sistema de programaci que utilitzi la comunicaci srie i que no requereixi d'un hardware ni software especfics. Daquesta manera, obtenim una placa autnoma i un programador gratut, de muntatge rpid i simple dutilitzar. El sistema de gravaci dissenyat sha dividit en tres blocs. Per una banda, un programa que anomenem programador encarregat de transferir codi de programa des de lordinador al microcontrolador de la placa entrenadora. Per altra banda, un programa anomenat bootloader, situat al microcontrolador, permet rebre aquest codi de programa i emmagatzemar-lo a les direccions de memria de programa corresponents. Com a tercer bloc, simplementa un protocol de comunicaci i un sistema de control derrors per tal dassegurar una correcta comunicaci entre el programador i el bootloader. Els objectius daquest projecte shan complert i per les proves realitzades, el sistema de programaci ha funcionat correctament.
Resumo:
LSlot, conegut per tots amb el nom dScalextric, sha implantat com a una forma doci habitual, la prctica del qual no queda restringida als ms petits, sin que cada vegada crea ms afici entre els grans. El fet que lSlot shagi exts entre els adults nha revolucionat la prctica. Lentrada al mercat de lSlot de gent adulta, i amb poder adquisitiu molt superior als adolescents, ha provocat que les marques especialitzades vagin evolucionant els seus productes cada vegada ms. Totes les marques shan vist obligades a desenvolupar vehicles ms competitius i alhora treure al mercat accessoris que augmentin la realitat del joc. Una de les necessitats que sha creat s la de competir entre jugadors. Aquesta competici tan pot ser en forma de carrera entre diversos participants, com de forma individual, cronometrant el temps de cada participant en un circuit. Lobjectiu principal del projecte s crear un sistema capa de realitzar cronometratges en temps real mitjanant sensors digitals ja existents en el mercat de lSlot i poder controlar i visualitzar la informaci des dun PC. Per a poder captar els senyals dels sensors sha utilitzat un sistema microcontrolat, que garanteix gran velocitat dadquisici, processament de dades i transmissi. La comunicaci del Microcontrolador amb el PC sha realizat mitjanant el bus USB. El PC ser el controlador del sistema i donar les ordres al Microcontrolador, podent aix tenir control total sobre el funcionament del programa. Tamb ser el PC el que tractar els crocometratges enregistrats i els mostrar per pantalla
Resumo:
Lorganitzaci de la producci s sempre un factor clau en qualsevol empresa. No hi ha cap frmula magistral que pugui servir per a tothom, perqu aquesta s molt depenent del sector i de la mida. Softvic S.A., lempresa on treballo, em va demanar que implants un sistema dorganitzaci adequat a una empresa de desenvolupament de Software. Les empreses daquesta tipologia tenen dues caracterstiques diferenciadores respecte una empresa de fabricaci: les feines es fan una nica vegada i es redefineixen freqentment els projectes a fer al futur. s a dir, els requisits sn inestables i requereixen rapidesa i flexibilitat. Actualment, Softvic S.A. ja t la ISO 9001:2008 al departament de programaci. Aquesta ISO contempla com es creen les ordres de programaci (OP) i ordres dincidncia (OI) i com es registra i avalua la feina realitzada. Lobjectiu s implantar una metodologia que sencarregui de la part anterior a aquesta, s a dir, definir les feines a fer en un perode. Aix sha dintegrar perfectament amb la part ja recolzada per la ISO. Per aquest fet es va escollir la metodologia Scrum que complia tots els requisits esmentats i estava contrastada per diferents empreses del mn del Software. Primerament es van fer proves en les quals es guardava la informaci en un Excel i simprimien manualment les feines a realitzar. Un cop es va haver decidit quina informaci era til i quina no en el cas de Softvic, es va crear una base de dades amb les taules i camps necessaris. Per treballar de forma ms cmoda es va fer posteriorment un programa per a mantenir les dades i un formulari per imprimir etiquetes. A mesura que hem anat utilitzant la metodologia Scrum, hem anat ajustant aspectes cap on hem cregut convenient pel nostre cas en particular.
Resumo:
Software integration is a stage in a software development process to assemble separate components to produce a single product. It is important to manage the risks involved and being able to integrate smoothly, because software cannot be released without integrating it first. Furthermore, it has been shown that the integration and testing phase can make up 40 % of the overall project costs. These issues can be mitigated by using a software engineering practice called continuous integration. This thesis work presents how continuous integration is introduced to the author's employer organisation. This includes studying how the continuous integration process works and creating the technical basis to start using the process on future projects. The implemented system supports software written in C and C++ programming languages on Linux platform, but the general concepts can be applied to any programming language and platform by selecting the appropriate tools. The results demonstrate in detail what issues need to be solved when the process is acquired in a corporate environment. Additionally, they provide an implementation and process description suitable to the organisation. The results show that continuous integration can reduce the risks involved in a software process and increase the quality of the product as well.
Resumo:
Large enterprises have for many years employed eBusiness solutions in order to improve their efficiency. Smaller companies, however, have not been able to leverage these technologies due to the high level of know-how and resources required in implementing them. To solve this, novel software services are being developed to facilitate eBusiness adoption for the small enterprise with the aim of making B2Bi feasible not only between large organisations but also between trading partners of all sizes. The objective of this study was to find what standards and techniques on eBusiness and software testing and quality assurance fit best for building these new kinds of software considering the requirements their unique eBusiness approach poses. The research was conducted as a literature study with focus on standards on software testing and quality assurance together with standards on eBusiness. The study showed that the current software testing and quality assurance standards do not possess such characteristics as would make select standards evidently better fitted for building this type of software, which were established to be best developed as web services in order for them to meet their requirements. A selection of eBusiness standards and technologies was proposed to support this approach. The main finding in the study was, however, that these kinds of web services that have high interoperability requirements will have to be able to carry out automated interoperability and conformance testing as part of their operation; this objective dictates how the software are built and how testing during software development is to be done. The study showed that research on automated interoperability and conformance testing for web services is still limited and more research is needed to make the building of highly-interoperable web services more feasible.
Resumo:
The front end of innovation is regarded as one of the most important steps in building new software products or services, and the most significant benefits in software development can be achieved through improvements in the front end activities. Problems in the front end phase have an impact on customer dissatisfaction with delivered software, and on the effectiveness of the entire software development process. When these processes are improved, the likelihood of delivering high quality software and business success increases. This thesis highlights the challenges and problems related to the early phases of software development, and provides new methods and tools for improving performance in the front end activities of software development. The theoretical framework of this study comprises two fields of research. The first section belongs to the field of innovation management, and especially to the management of the early phases of the innovation process, i.e. the front end of innovation. The second section of the framework is closely linked to the processes of software engineering, especially to the early phases of the software development process, i.e. the practice of requirements engineering. Thus, this study extends the theoretical knowledge and discloses the differences and similarities in these two fields of research. In addition, this study opens up a new strand for academic discussion by connecting these research directions. Several qualitative business research methodologies have been utilized in the individual publications to solve the research questions. The theoretical and managerial contribution of the study can be divided into three areas: 1) processes and concepts, 2) challenges and development needs, and 3) means and methods for the front end activities of software development. First, the study discloses the difference and similarities between the concepts of the front end of innovation and requirements engineering, and proposes a new framework for managing the front end of the software innovation process, bringing business and innovation perspectives into software development. Furthermore, the study discloses managerial perceptions of the similarities and differences in the concept of the front end of innovation between the software industry and the traditional industrial sector. Second, the study highlights the challenges and development needs in the front end phase of software development, especially challenges in communication, such as linguistic problems, ineffective communication channels, a communication gap between users/customers and software developers, and participation of multiple persons in software development. Third, the study proposes new group methods for improving the front end activities of software development, especially customer need assessment, and the elicitation of software requirements.
Resumo:
The use of square-wave voltammetry in conjunction with a cathodically pre-treated diamond electrode for the analytical determination of sodium cyclamate is described. The samples were analyzed as received in a 0.5 mol L-1 H2SO4 solution in the concentration range from 5.0 × 10-5 mol L-1 to 4.1 × 10-4 mol L-1, with a detection limit of 4.8 × 10-6 mol L-1. The RSD was smaller than 1.2 % and the proposed method was applied with success in the determination of sodium cyclamate in several dietary products.
Resumo:
In this work was developed a method for the determination of saccharin in dietary products by a biamperometric titration, using two silver electrodes as working electrodes and silver nitrate as titrant. It were used products as juices (light) and sweeteners with saccharin in concentrations ranged from 8.73 x 10-5 mol L-1 to 1.0 x 10-2 mol L-1, and the results were in close agreement with those data found using a HPLC method at a confidence level of 95%. The main advantages of the proposed method are its simplicity, rapid and low cost.
Resumo:
Glycerol is a byproduct of biodiesel production through transesterification of oils and fat. This article discusses the chemical transformation of glycerol in ethers, acetals and esters of high technological applications, especially in the fuel sector. Glycerol hydrogenolysis, dehydration to acrolein and oxidation are discussed as well, to show the potential use of glycerol for production of plastic monomers. Finally, the article shows other transformations, such as syn gas production, epichloridrin and glycerin carbonate.
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Ultraviolet radiation is the major exogenous mediators of skin damage. To prevent such damage, sunscreen products are used. New research aims at both the elucidation of new sunscreen compounds, as well as new assets for supporting and synergistic action. In this article it is presented a systematic data of innovation for sunscreen and a discussion on prospects for partnership between universities and enterprises, where it is believed that the innovations in cosmetics, driven by the constant demand of the market in new products, may be a stimulus for the interactions between university and company in Brazil.
