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Aparecida de Goiânia, Brazil

dos Reis R.C.,IFG | Devilla I.A.,UEG | Ascheri D.P.R.,UEG | Servulo A.C.O.,UEG | Souza A.B.M.,UEG
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2012

The objective of this paper was to model the drying curves of the leaves of basil (Ocimum basilicum L.) in the infrared at temperatures of 50, 60, 70 and 80 °C and to evaluate the influence of drying temperature on the color of dried leaves. Drying was conducted in infrared dryer with temperature and greenhouse air circulation. Experimental data were fitted to eight mathematical models. The magnitude of the coefficient of determination (R2), the mean relative error (P), the estimated mean error (SE) and chisquare test (χ2) were used to verify the degree of fitness of the models. From the study it was concluded that: a) the behavior of the drying curves of basil leaves was similar to most agricultural products, the drying times in the infrared were less than the drying times in an oven with air circulation, b) the mathematical drying model proposed by Midilli et al. (2002) was the one which best adjusted to the experimental data, c) the diffusion coefficient ranged from 9.10 × 10-12 to 2.92 × 10-11 m2 s-1 and d) the color of the samples was highly influenced by drying, becoming darker due to loss of chlorophyll with increasing temperature.

Donges J.,German Electron Synchrotron | Rothkirch A.,German Electron Synchrotron | Wroblewski T.,German Electron Synchrotron | Bjeoumikhov A.,IFG | And 4 more authors.
Materials Science Forum | Year: 2014

Position resolved structural information from polycrystalline materials is usually obtained via micro beam techniques illuminating only a single spot of the specimen. Multiplexing in reciprocal space is achieved either by the use of an area detector or an energy dispersive device. Alternatively spatial information may be obtained simultaneously from a large part of the sample by using an array of parallel collimators between the sample and a position sensitive detector which suppresses crossfire of radiation scattered at different positions in the sample. With the introduction of an X-ray camera based on an energy resolving area detector (pnCCD) we could combine this with multiplexing in reciprocal space. © (2014) Trans Tech Publications, Switzerland.

Paiva M.A.C.,Brazilian Technological Institute of Aeronautics | Silva R.A.,Brazilian Technological Institute of Aeronautics | Fleury C.A.,IFG | Anzaloni A.,Brazilian Technological Institute of Aeronautics
IEEE Latin America Transactions | Year: 2015

This article describes a novel architecture signaling network so that an IP Multimedia Subsystem (IMS) user, flying in an aircraft, be able to register with his IMS network of origin and have access to personal services and multimedia, through a Wide-Band Code Division Multiple Access (W-CDMA) link. The proposed architecture integrates the Session Initialization Protocol (SIP), the Network Mobility Basic Support (NEMO BS) protocol and the Mobile Internet Protocol (MIPv6) to enable the usage of IMS services by passenger on board an aircraft, as a type of Aeronautical Passenger Communication (APC) services. In this novel architecture, NEMO and MIPv6 protocols are responsible for the mobility management of smartphones and user notebook and the SIP protocol is responsible for the register and the management of sessions of an IMS user. This novel architecture enables an Air Communication Service Provider (ACSP) be able to supply to an on-board passenger (The IMS user) some APC services through an Universal Mobile Telecommunication System (UMTS). The simulation results indicate the accuracy of the proposed architecture into aeronautical scenarios. © 2015 IEEE.

Faria P.B.,IFMT | Vieira J.O.,Total Alimentos | Silva J.N.,IFMT | Rodrigues A.Q.,IFMT | And 3 more authors.
Revista Brasileira de Ciencia Avicola | Year: 2011

The present study was carried out to evaluate the effects of alternative feedstuffs as partial substitutes of corn and soybean in free-range broiler diets on performance, carcass yield and technical-economic viability. A total of 400 Pescoço Pelado broilers were distributed in a completely randomized experimental design (CRD), with four treatments (treatment 1:Control; treatment 2: 10% rice bran inclusion; treatment 3: 10% ground cassava leaves; and treatment 4: 10% ground lead tree hay) with four replicates per treatment. Each replicate consisted of a group of 25 birds per paddock, separated per sex. Initial weight (IW), final weight (FW), body weight (BW), daily weight gain (DWG), feed intake (FI) and feed conversion ratio (FCR) were evaluated. Carcass, cuts (breast, thigh, drumstick, back, neck, leg and wings), abdominal fat and giblets (gizzard, heart and liver) yields were determined. The technical-economic viability of each treatment was assessed by determining the cost of feed per kg body weight, economic efficiency index and cost. The highest final weights were obtained with the use of rice bran. Rice bran and cassava leaves promoted higher carcass yield, as well as lower back and abdominal fat yields. The use of cassava leaves showed better economic efficiency among the treatments with alternative feedstuffs. The use of alternative feedstuffs at 10% inclusion in substitution of corn and soybean meal did not not result in major changes in performance and carcass parameters, and economic efficiency, and therefore, their use is recommended when the availability or the price of key ingredients, such as soybean meal and corn, increase.

News Article | November 24, 2015
Site: motherboard.vice.com

In December, representatives from more than 190 countries will come together for a high level meeting at the United Nations to determine the future of the internet. But first, a select few are meeting behind closed doors this week to set the agenda. The December meeting is a planned ten year review of policies for global internet deployment laid out at the World Summit on the Information Society (WSIS) in 2005. Delegates will discuss issues such as the digital divide and internet governance, taking into account input from a variety of non-governmental stakeholders. One of those non-government entities is the Internet Society, a nonprofit that promotes internet freedom and accessibility. CEO Kathryn Brown said a lot of issues are on the table this year, and some internet freedom advocates are concerned governments will use the review to push control of the internet into their hands. “We have been working very hard to ensure the governance of the internet remains as it is, which is in the hands of the private sector; with roles and responsibilities of governments when it is called for, but not a centrally-controlled, top-down control,” she said. It’s not clear which countries will be present at the closed doors meetings. There are four main areas to be discussed at the high-level WSIS meeting in December: internet accessibility, human rights and free speech, internet governance, and internet security. Around 60 percent of the world’s population is still not online, most of which is in extremely inaccessible areas. The UN will discuss how to make the internet available to the most difficult-to-reach users and how those services will be administered and governed. Many countries have already made their views public ahead of the WSIS, with countries such as Russia advocating for more extreme government controls over the internet. The country has also said it advocates transferring power over internet domains and IP addresses from US control to an international organization overseen by the UN. The US has already announced it intends to hand control over the Internet Corporation for Assigned Names and Numbers (ICANN) to a “global multi-stakeholder body.” Other countries have called for more transparency and multi stakeholder conversations surrounding internet governance, including the renewal of the Internet Governance Forum (IGF), an annual multi-stakeholder forum established by the UN in 2006 to set internet standards and policies. The IFG’s mandate expires this year. The informal meeting this week has a huge bearing on December’s main event, and will set the tone for how much oversight and control governments have over the internet, especially in the developing world. Brown said she is concerned the recent terror attacks in Paris may be used to push censorship and anti-privacy measures at the forum. “After Paris, there are governments who have always thought they should be in charge and now have a way to argue this that is persuasive to other governments, at least with respect to the security issues,” she said. “Our work is to try to create understanding around cyber security issues, and it is going to take a concerted, collaborative effort around security.” Sally Wentworth, the vice president of global policy development at the Internet Society, said internet security will be a major issue at this meeting, not necessarily because concrete policies will be formed there but because it will shape the global conversation. “They will discuss what is the role of the UN to some degree, but really these are more declaratory statements of how the international community can address cyber security and who should be involved, who is at the table, and how we should deal with issues like mass surveillance,” she said. Declarations made by the UN following meeting like these are often used as framework, especially in developing countries, for internet policy. Brown said that is why the meeting is “hugely important.” The negotiations are set to end this week, but Wentworth said she anticipates they could continue all the way up to the December meetings.

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