(UFSM) Observe o mapa de recursos minerais do Rio Grande do Sul.

O mapa acima mostra a espacialização do ___________, que constitui o principal bem mineral produzido no Rio Grande do Sul, com recursos totais da ordem de  bilhões de toneladas.

 Assinale a alternativa que preenche corretamente a lacuna da afirmação acima.

(Uneb) Cada vez mais os Estados Unidos procuram se libertar do petróleo, pois a dependência dessa fonte de combustível põe em risco não só a segurança nacional, mas também a econômica e a ambiental do país. Como a civilização não pode parar de se locomover, busca-se uma nova maneira de prover energia aos meios de transporte. Biocombustíveis celulósicos oferecem a alternativa mais atraente do ponto de vista ambiental e com maior viabilidade técnica a curto prazo.

(HUBER; DALE, 2009, p. 24).

O esquema mostra o processo da pirólise catalítica, em que a celulose se decompõe e é convertida em gasolina em uma única etapa.

Uma das etapas para utilização dos biocombustíveis celulósicos é a desmontagem da biomassa sólida em que se constitui a celulose.

Com base nos conhecimentos existentes sobre essa biomolécula, é correto afirmar:

(FUVEST) Observe os mapas.

Os períodos do ano que oferecem as melhores condições para a produção de energia hidrelétrica no Sudeste e energia eólica no Nordeste são aqueles em que predominam, nessas regiões, respectivamente.

Uma casca esférica metálica fina, isolada, de raio R=4,0 cm e carga Q produz um potencial elétrico igual a 10,0V no ponto P distante 156 cm da superfície da casca (ver figura). Suponha agora que o raio da casca esférica foi alterado para um valor quatro vezes menor.Nessa nova configuração, a ddp entre o centro da casca e o ponto P, em quilovolts, será:

Monday, August 2, 1999 Published at 13:22 GMT 14:22 UK

Crazy little thing called love?

Love and obsession are two entirely different things. Love is that enviable state that knows no envy or vanity. Love is more than an emotion; it is the substance of our being!

Deepa Pant, Kuwait

Cannot falling in love drive you just as mad?

Laura Willoughby, UK

Background │Vote │Your reaction│Have your say

The Vote:

Does falling in love drive you mad?

            Yes (     )                      No (     )

Background│Vote│Your reaction│Have your say

The Background:

Can't eat, can't sleep, can't stop grinning like a Cheshire cat, can't stop thinking about that certain someone - classic symptoms of love? Well actually, you could be going mad.

An Italian researcher has found that people in the first flush of love have a lot in common with sufferers of obsessive Compulsive Disorder (OCD).

People with OCD and people in love both get fixated with things and both have very low levels of the feel-good chemical Serotonin - which has a soothing effect on the brain.

The research published in the New Scientist has received mixed reactions in the science community, but Thomas lnsel, of Emory University, thinks it's about time failing in love was studied as a relevant human emotion.

"Any of us who have fallen in love know that this is a profoundly biological process. Now somebody's actually trying to understand how," he said.

Do you think falling head over heels for someone sends you a bit crazy? Have you spent hours on end fantasizing about your latest hot romance, when you should be getting on with something else? Do you think love and obsession are the same thing? Send us your views and experiences.

Background│Vote│Your reaction│Have your say

_______________________________________

YOUR REACTION:

"To be wise and to be in love is scarcely granted even to a god." Latin proverb

Kirk O'Connor, UK

YES!!! Falling in love drives you totally crazy... I've fallen in love with a beautiful creature... and I don't know where he came from... the only way l can describe him is as a bronzed Adonis... whenever I look into his eyes... I just melt...

WW, UK

I cannot believe that someone actually funded this project. There are so many worthwhile causes that go unnoticed, so we can examine another superficial aspect of our lives. Love is not a disease that needs to be cured or avoided. If they have all this money to throw away maybe they should look at it from another angle... Why do people allow themselves to fall out of love? Are they mad? If you ask me, those are the ones that need help!

Bonnie, USA

I am so gob-smacked by the BBC putting something up that equates having obsessive compulsive disorder with 'being mad'. That is certainly discrimination! There are a whole lot of us out here with OCD and I can assure you we ain't mad. Having OCD is not the same as 'being obsessed' about a person - and we certainly aren't like stalkers. Like being in love? This scientist needs HIS head examined I am afraid.

People who are depressed (is this like love?) also have problems with serotonin levels - serotonin is associated with many problems, with emotions. This theory is equivalent to saying being in love must be the same as heart disease because it affects your heart beat! Leaving OCD out of this, yes, there are aspects of falling in love, sometimes, that are similar to temporary insanity.

It depends how it takes you - falling in love is different for different people and their behavior varies greatly. Some ways of falling in love seem like insanity and that I believe is why the ancient Greeks regarded the experience as being 'possessed' by Aphrodite. It can be a divine experience of possession, of course. Or it can make you mad.

Imogen Woolf, UK

I can't believe that this research is being funded. What's the point? Love is a wonderful emotion and to study it takes its fun away. Feelings are feelings, not research subjects!

Gareth Hagger-Johnson, UK

http://newsl.this.bbc.co.uk/ht/english/talking_ point/newsid_40/000/40/080.asp

In "I can not believe that someone actually funded this project" (Bonnie, USA), ACTUALLY means: