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<p style="margin-bottom: 0in; line-height: 100%;">Dear colleagues,</p>
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<p style="margin-bottom: 0in; line-height: 100%;" lang="pt-PT">I want to define a object of polyurethane (neck-thyroid phantom ) in gate, it is used nowadays in laboratory , please could you help me with some information for I will do and I thank you. So specifications given by the manufacturer which is attached.</p>
<p style="margin-bottom: 0in; line-height: 100%;"><br />my material: polyurethane resin (specifications in Annex). <br /><br /> <br /><br /> Polyurethane: density d = 1.03 g / cm3. n = number of elements?<br /><br />+ El: name ???? N = ??<br />+ El: name ???? N = ?? .... ???</p>
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<p style="margin-bottom: 0in; line-height: 100%;"><span>About the elements, i need to know (chemical symbol, atomic number , The molar mass (g / mol).</span></p>
<p style="margin-bottom: 0in; line-height: 100%;"><span><br /></span><span>M</span><span>ost of my problem is in the chemical formula.</span></p>
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<p style="margin-bottom: 0in; line-height: 100%;">With my regards,</p>
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<p style="margin-bottom: 0in; line-height: 100%;"><span style="color: #002060;"><span style="font-family: Tahoma;"><span style="font-size: x-small;"><span style="font-size: small;">Carmen P. Castro Barrientos</span></span></span></span></p>
<p style="margin-bottom: 0in; line-height: 100%;"><span style="color: #002060;"><span style="font-family: Tahoma;"><span style="font-size: x-small;"><span style="font-size: small;"><br /></span><span style="font-size: small;"><strong>Qualified Radioactive Sources Security Expert-IAEA (CNEN/IRD) </strong></span></span></span></span></p>
<p style="margin-bottom: 0in; line-height: 100%;"><span style="color: #002060;"> <span style="font-family: Tahoma;"><span style="font-size: x-small;">Rio de Janeiro<br />Mobile: (21) 79938497</span></span></span></p>
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