Metamaterial emite luz infravermelha melhor do que retém, quebrando o equilíbrio entre absorção e emissão de calor ...

Assim, o Questionário Internacional de Atividade Física- IPAQ (forma longa, semana normal/ habitual e aplicado com entrevista) validado para idosos brasileiros por Benedetti et al. 11 e Benedetti et ...

Sinais provenientes de debaixo da Antártida foram detectados. Eles parecem ter atravessado a Terra como se a sua matéria não ...

A concise method to directly generate benzyl radicals from benzyl alcohol derivatives has been developed. The simple and inexpensive combination of TiCl4(collidine) (collidine = 2,4,6-collidine) and ...

And not long after Ritter said goodbye to Arts & Letters, Williams did the same. After he left in March in search of something new, Ritter was his first phone call, Williams said. Williams said over ...

All letters, limited to 250 words, should be on topics that affect the public. Letters must include an address and telephone number for verification purposes.

A maximum of 150 words is preferred. Letters must carry a first and last name, or two initials and a last name, and include an address and daytime telephone number. All letters are subject to editing.

Today's letters: Ottawa City Hall really doesn't need more security Friday, June 20: The building was already designed with safety in mind, says one reader. You can write to us too, at letters ...

Letters: Crown him king of the losers. Moreno's attitude is unacceptable. Save public media. Moreno, Husted lack moral courage.

Submit your letter to the editor via this form. Read more Letters to the Editor. Trump adminstration needs lesson in integrity Flag Day and the 250th birthday of the U.S. Army are moments when we ...

Submit your letter to the editor via this form. Read more Letters to the Editor. Phonics alone won’t get kids reading Re: “ Far too many California children can’t read ” (Page A7, June 17).