Em Goiás e Mato Grosso, as modificações dependeram fundamentalmente de novos manejos aplicados às terras. Acima de tudo, porém, o desenvolvimento regional deveu-se a uma articulada transformação dos meios urbanos e rurais, a serviço da produção tanto de alimentos básicos, como o arroz, por exemplo, quanto de grãos para consumo interno e exportação, como a soja.

AB’SABER, A. N. Os domínios de natureza no Brasil: potencialidades paisagísticas. São Paulo: Ateliê, 2003.

A realidade descrita no texto se estabelece sobre qual domínio morfoclimático?

O urânio é empregado como fonte de energia em reatores nucleares. Para tanto, o seu minerai deve ser refinado, convertido a hexafluoreto de urânio e posteriormente enriquecido, para aumentar de 0,7% a 3% a abundância de um isótopo específico – o urânio-235. Uma das formas de enriquecimento utiliza a pequena diferença de massa entre os hexafluoretos de urânio-235 e de urânio-238 para separá-los por efusão, precedida pela vaporização. Esses vapores devem efundir repetidamente milhares de vezes através de barreiras porosas formadas por telas com grande número de pequenos orifícios. No entanto, devido à complexidade e à grande quantidade de energia envolvida, cientistas e engenheiros continuam a pesquisar procedimentos alternativos de enriquecimento.

ATKINS, P.; JONES, L. Princípios de química: questionando a vida moderna e o meio ambiente. Porto Alegre: Bookman, 2006 (adaptado).

Considerando a diferença de massa mencionada entre os dois isótopos, que tipo de procedimento alternativo ao da efusão pode ser empregado para tal finalidade?

O chorume é somente o líquido proveniente da decomposição da matéria orgânica, e os lixiviados, ou percolados, são a solução do chorume com a água, de origem superficial ou subterrânea. Sendo uma das principais fontes de poluição dos aterros sanitários, esses resíduos líquidos poluem as águas subterrâneas e o solo em que o lixo está depositado.

SÁ, L. F. de; JUCÁ, J. F. T.; SOBRINHO, M. A. Tratamento do lixiviado de aterro sanitário usando destilador solar.

Revista Ambiente & Água, v. 7, n. 1, 2012 (adaptado).

Para evitar o problema ambiental causado pelos resíduos citados no texto, é necessário que a gestão dos aterros sanitários

(PUC-RIO) Are You A Digital Native or A Digital Immigrant?

We all know that we are living in an increasingly technologically driven world. Living here in the heart of Silicon Valley I certainly feel it every day. In fact, I don’t think I know a single couple in my neighborhood, other than my wife and I, who don’t work in the technology field in some capacity. Our local companies are Facebook, Apple, Google, Yahoo, and so many venture capital firms that I can’t keep them straight. But you don’t have to live in Silicon Valley to feel that the world is getting more and more technology centered, focused, and driven. We can debate the pros and cons of this reality but ⁹we can’t deny that the world has changed very quickly in head spinning ways. Two recent comments led me to finally enter the 21^st century ²by getting a smart phone this week, kicking and screaming.

First, I mentioned to one of my undergraduate classes at Santa Clara University that I didn’t have a smart phone, but rather I had a ⁸dumb phone. ¹⁰My phone can make and receive phone calls and that’s about it. No email, internet, and so forth. ³So one of my students looked at me in an odd and curious way, like she was talking to someone from another planet, and stated in ¹¹a matter of fact manner, “Professor Plante, even 2^nd graders have smart phones.” Ouch!

Second, ⁴I was talking with a producer at the PBS NewsHour who wanted me to do a live interview within a few hours of his call regarding some late breaking news about clergy sexual abuse, which is my specialty. I was out of the office and driving my car when he called and in ¹²a matter of fact manner he said that he wanted to send me some important information to my smart phone to best prepare me for the upcoming interview. When I told him that I couldn’t receive anything since I had a dumb phone and not a smart phone, there was a long silence. ¹He then said he’d have to just read it to me over the phone as a Plan B. He wasn’t happy ... neither was I.

⁷In case you haven’t noticed, the 21^st century is really upon us and to live in it one really does need to be connected in my view. Although I often consider myself a 19^th or 20^th century guy trapped in the 21^st century we really do need to adapt. For most of us we are just living in a new world that really demands comfort with and access to technology.

This notion of digital native vs. digital immigrant makes a great deal of sense to me. Young people in our society are digital natives. They seem to be very comfortable with everything from iPhones to TV remotes. Digital immigrants, like me, just never feel that comfortable with these technologies. Sure we may learn to adapt by using email, mobile phones, smart ones or dumb ones, Facebook, and so forth but it just doesn’t and perhaps will never be very natural for us. It is like learning a second language ... you can communicate but with some struggle.

This has perhaps always been true. I remember when I was in graduate school in the 1980s trying to convince my grandparents that buying a telephone answering machine as well as a clothes dryer would be a good idea. They looked at me like I was talking in another language or that I was from another planet.

⁵Perhaps we have a critical period in our lives for technology just like we do for language. ⁶When we are young we soak up language so quickly but find it so much harder to learn a new language when we are older. The same seems to be true for technology.

So, this week I bought my first smart phone and am just learning to use it. When questions arise, I turn to my very patient teenage son for answers. And when he’s not around, I just look to the youngest person around for help.

So, what about you? Are you a digital native or a digital immigrant and how does it impact your life?Adapted from “Digital Native vs. Digital Immigrant? Which are you?”

            Published on July 24, 2012 by Thomas G. Plante, Ph.D., ABPP in Do the Right Thing http://www.psychologytoday.com/blog/do-the-right-thing/201207/digital-native-vs-digital-immigrant-which-are-you retrieved on July 28, 2012

“We can’t deny” in “...we can’t deny that the world has changed very quickly...” (ref. 9) and “My phone can make” in “My phone can make and receive phone calls...” (ref. 10) express the ideas of, respectively:

(UNESP) Oxfam study finds richest 1 percent is likely to control half of global wealth by 2016

By Patricia Cohen

January 19, 2015

The richest 1 percent is likely to control more than half of the globe’s total wealth by next year, the anti-poverty charity Oxfam reported in a study released on Monday. The warning about deepening global inequality comes just as the world’s business elite prepare to meet this week at the annual World Economic Forum in Davos, Switzerland.

The 80 wealthiest people in the world altogether own  the report found, nearly the same amount shared by the  people who occupy the bottom half of the world’s income scale. (Last year, it took 85 billionaires to equal that figure.) And the richest 1 percent of the population controls nearly half of the world’s total wealth, a share that is also increasing.

The type of inequality that currently characterizes the world’s economies is unlike anything seen in recent years, the report explained. “Between 2002 and 2010 the total wealth of the poorest half of the world in current U.S. dollars had been increasing more or less at the same rate as that of billionaires,” it said. “However since 2010, it has been decreasing over that time.”

Winnie Byanyima, the charity’s executive director, noted in a statement that more than a billion people lived on less than  a day. “Do we really want to live in a world where the 1 percent own more than the rest of us combined?” Ms. Byanyima said. “The scale of global inequality is quite simply staggering.”

Investors with interests in finance, insurance and health saw the biggest windfalls, Oxfam said. Using data from Forbes magazine’s list of billionaires, it said those listed as having interests in the pharmaceutical and health care industries saw their net worth jump by 47 percent. The charity credited those individuals’ rapidly growing fortunes in part to multimillion-dollar lobbying campaigns to protect and enhance their interests.

(www.nytimes.com. Adaptado.)

No trecho do terceiro parágrafo “However since 2010, it has been decreasing over that time.”, o termo “however” pode ser substituído, sem alteração de sentido, por