<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div style="-webkit-text-size-adjust: auto; ">Dear Robert</div><div style="-webkit-text-size-adjust: auto; "><br></div><div style="-webkit-text-size-adjust: auto; ">An excellent question below, and some good reasons for forced draft TLUDS. </div><div style="-webkit-text-size-adjust: auto; "><br></div><div style="-webkit-text-size-adjust: auto; ">Certainly TLUDS can work usefully without electric power. </div><div style="-webkit-text-size-adjust: auto; "><br></div><div style="-webkit-text-size-adjust: auto; ">However, the flame from a natural draft TLUD is tall and skinny and so you have incomplete combustion, quenched when a pot an inch or two away from the stove top (since hot gases naturally rise). Result: you need more fuel and get soot bottomed pots. </div><div style="-webkit-text-size-adjust: auto; "><br></div><div style="-webkit-text-size-adjust: auto; ">The battery allows you to have a horizontal disk of completely burned fuel.</div><div style="-webkit-text-size-adjust: auto; "><br></div><div><a class="bia uh_rl iu-img" id="DkQEJWnwwcOjUM:" tag="bia" style="display: block; height: 162px; margin-left: 0px; margin-top: -6px; width: 216px; "><span style="-webkit-text-size-adjust: auto; background-color: rgba(255, 255, 255, 0);"><img src="data:image/jpeg;base64,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" alt="" align="middle" border="0" height="162" id="imgthumb7" class="th imgthumb7" title="http://www.newdawnengineering.com/website/library/Papers+Articles/TLUD%20Handbook,%20Paul%20Anderson,%20v.2010.pdf" width="216" style="border: 0px; margin: 0px; "></span></a></div><div style="-webkit-text-size-adjust: auto; "><br></div><div style="-webkit-text-size-adjust: auto; ">similar to the disc of heat created by a premixed gas stove. </div><div style="-webkit-text-size-adjust: auto; "><br></div><div style="-webkit-text-size-adjust: auto; ">So, at present, the 1.5 V battery makes a much cleaner and more efficient stove.</div><div style="-webkit-text-size-adjust: auto; "><br></div><div style="-webkit-text-size-adjust: auto; ">Good question, and I hope a good answer.</div><div style="-webkit-text-size-adjust: auto; "><br></div><div style="-webkit-text-size-adjust: auto; ">Tom Reed<br><br>Thomas B Reed<span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); "> </span><div><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469);">280 Hardwick Rd</span></div><div><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469);">Barre, MA 01005</span></div><div><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469);"><br></span></div><div><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469);">508 353 7841</span></div></div><div style="-webkit-text-size-adjust: auto; "><br>On May 12, 2013, at 7:05 AM, Robert Fairchild <<a href="mailto:solarbobky@yahoo.com">solarbobky@yahoo.com</a>> wrote:<br><br></div><blockquote type="cite" style="-webkit-text-size-adjust: auto; "><div><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font: inherit;"><!--[if gte mso 9]><xml>
<w:WordDocument>
<w:View>Normal</w:View>
<w:Zoom>0</w:Zoom>
<w:TrackMoves/>
<w:TrackFormatting/>
<w:PunctuationKerning/>
<w:ValidateAgainstSchemas/>
<w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid>
<w:IgnoreMixedContent>false</w:IgnoreMixedContent>
<w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText>
<w:DoNotPromoteQF/>
<w:LidThemeOther>EN-US</w:LidThemeOther>
<w:LidThemeAsian>X-NONE</w:LidThemeAsian>
<w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript>
<w:Compatibility>
<w:BreakWrappedTables/>
<w:SnapToGridInCell/>
<w:WrapTextWithPunct/>
<w:UseAsianBreakRules/>
<w:DontGrowAutofit/>
<w:SplitPgBreakAndParaMark/>
<w:DontVertAlignCellWithSp/>
<w:DontBreakConstrainedForcedTables/>
<w:DontVertAlignInTxbx/>
<w:Word11KerningPairs/>
<w:CachedColBalance/>
</w:Compatibility>
<m:mathPr>
<m:mathFont m:val="Cambria Math"/>
<m:brkBin m:val="before"/>
<m:brkBinSub m:val="--"/>
<m:smallFrac m:val="off"/>
<m:dispDef/>
<m:lMargin m:val="0"/>
<m:rMargin m:val="0"/>
<m:defJc m:val="centerGroup"/>
<m:wrapIndent m:val="1440"/>
<m:intLim m:val="subSup"/>
<m:naryLim m:val="undOvr"/>
</m:mathPr></w:WordDocument>
</xml><![endif]-->
<p class="MsoNormal">Why might we want forced air for a TLUD?</p><p class="MsoNormal"><br></p>
<p class="MsoNormal">For primary air:</p>
<p class="MsoNormal">Higher power output (than natural draft)<br></p>
<p class="MsoNormal">Adequate power with tight packing fuels ( pellets, rice
hulls, …)</p><p class="MsoNormal"><br></p>
<p class="MsoNormal">For secondary air:</p>
<p class="MsoNormal">Higher power output (with forced primary air)</p>
<p class="MsoNormal">Improve cleanliness of combustion through better
turbulence/mixing/air quantity</p>
<p class="MsoNormal">Reduce flame height to ensure more complete combustion, less
soot/black carbon</p><p class="MsoNormal"><br></p><p class="MsoNormal">Anything I've missed?</p><p class="MsoNormal"><br></p><p class="MsoNormal"> Thanks,</p><p class="MsoNormal"> Bob</p><p class="MsoNormal"><br></p><p class="MsoNormal">I am still thinking about venturis and enhanced natural draft secondary air flow.<br></p>
<!--[if gte mso 9]><xml>
<w:LatentStyles DefLockedState="false" DefUnhideWhenUsed="true"
DefSemiHidden="true" DefQFormat="false" DefPriority="99"
LatentStyleCount="267">
<w:LsdException Locked="false" Priority="0" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Normal"/>
<w:LsdException Locked="false" Priority="9" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="heading 1"/>
<w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 2"/>
<w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 3"/>
<w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 4"/>
<w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 5"/>
<w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 6"/>
<w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 7"/>
<w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 8"/>
<w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 9"/>
<w:LsdException Locked="false" Priority="39" Name="toc 1"/>
<w:LsdException Locked="false" Priority="39" Name="toc 2"/>
<w:LsdException Locked="false" Priority="39" Name="toc 3"/>
<w:LsdException Locked="false" Priority="39" Name="toc 4"/>
<w:LsdException Locked="false" Priority="39" Name="toc 5"/>
<w:LsdException Locked="false" Priority="39" Name="toc 6"/>
<w:LsdException Locked="false" Priority="39" Name="toc 7"/>
<w:LsdException Locked="false" Priority="39" Name="toc 8"/>
<w:LsdException Locked="false" Priority="39" Name="toc 9"/>
<w:LsdException Locked="false" Priority="35" QFormat="true" Name="caption"/>
<w:LsdException Locked="false" Priority="10" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Title"/>
<w:LsdException Locked="false" Priority="1" Name="Default Paragraph Font"/>
<w:LsdException Locked="false" Priority="11" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Subtitle"/>
<w:LsdException Locked="false" Priority="22" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Strong"/>
<w:LsdException Locked="false" Priority="20" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Emphasis"/>
<w:LsdException Locked="false" Priority="59" SemiHidden="false"
UnhideWhenUsed="false" Name="Table Grid"/>
<w:LsdException Locked="false" UnhideWhenUsed="false" Name="Placeholder Text"/>
<w:LsdException Locked="false" Priority="1" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="No Spacing"/>
<w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading"/>
<w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List"/>
<w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid"/>
<w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1"/>
<w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2"/>
<w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1"/>
<w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2"/>
<w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1"/>
<w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2"/>
<w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3"/>
<w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List"/>
<w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading"/>
<w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List"/>
<w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid"/>
<w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 1"/>
<w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 1"/>
<w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 1"/>
<w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 1"/>
<w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 1"/>
<w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 1"/>
<w:LsdException Locked="false" UnhideWhenUsed="false" Name="Revision"/>
<w:LsdException Locked="false" Priority="34" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="List Paragraph"/>
<w:LsdException Locked="false" Priority="29" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Quote"/>
<w:LsdException Locked="false" Priority="30" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Intense Quote"/>
<w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 1"/>
<w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 1"/>
<w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 1"/>
<w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 1"/>
<w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 1"/>
<w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 1"/>
<w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 1"/>
<w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 1"/>
<w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 2"/>
<w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 2"/>
<w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 2"/>
<w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 2"/>
<w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 2"/>
<w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 2"/>
<w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 2"/>
<w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 2"/>
<w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 2"/>
<w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 2"/>
<w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 2"/>
<w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 2"/>
<w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 2"/>
<w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 2"/>
<w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 3"/>
<w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 3"/>
<w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 3"/>
<w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 3"/>
<w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 3"/>
<w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 3"/>
<w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 3"/>
<w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 3"/>
<w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 3"/>
<w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 3"/>
<w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 3"/>
<w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 3"/>
<w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 3"/>
<w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 3"/>
<w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 4"/>
<w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 4"/>
<w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 4"/>
<w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 4"/>
<w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 4"/>
<w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 4"/>
<w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 4"/>
<w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 4"/>
<w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 4"/>
<w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 4"/>
<w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 4"/>
<w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 4"/>
<w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 4"/>
<w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 4"/>
<w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 5"/>
<w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 5"/>
<w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 5"/>
<w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 5"/>
<w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 5"/>
<w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 5"/>
<w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 5"/>
<w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 5"/>
<w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 5"/>
<w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 5"/>
<w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 5"/>
<w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 5"/>
<w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 5"/>
<w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 5"/>
<w:LsdException Locked="false" Priority="60" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Shading Accent 6"/>
<w:LsdException Locked="false" Priority="61" SemiHidden="false"
UnhideWhenUsed="false" Name="Light List Accent 6"/>
<w:LsdException Locked="false" Priority="62" SemiHidden="false"
UnhideWhenUsed="false" Name="Light Grid Accent 6"/>
<w:LsdException Locked="false" Priority="63" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 1 Accent 6"/>
<w:LsdException Locked="false" Priority="64" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Shading 2 Accent 6"/>
<w:LsdException Locked="false" Priority="65" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 1 Accent 6"/>
<w:LsdException Locked="false" Priority="66" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium List 2 Accent 6"/>
<w:LsdException Locked="false" Priority="67" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 1 Accent 6"/>
<w:LsdException Locked="false" Priority="68" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 2 Accent 6"/>
<w:LsdException Locked="false" Priority="69" SemiHidden="false"
UnhideWhenUsed="false" Name="Medium Grid 3 Accent 6"/>
<w:LsdException Locked="false" Priority="70" SemiHidden="false"
UnhideWhenUsed="false" Name="Dark List Accent 6"/>
<w:LsdException Locked="false" Priority="71" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Shading Accent 6"/>
<w:LsdException Locked="false" Priority="72" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful List Accent 6"/>
<w:LsdException Locked="false" Priority="73" SemiHidden="false"
UnhideWhenUsed="false" Name="Colorful Grid Accent 6"/>
<w:LsdException Locked="false" Priority="19" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Subtle Emphasis"/>
<w:LsdException Locked="false" Priority="21" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Intense Emphasis"/>
<w:LsdException Locked="false" Priority="31" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Subtle Reference"/>
<w:LsdException Locked="false" Priority="32" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Intense Reference"/>
<w:LsdException Locked="false" Priority="33" SemiHidden="false"
UnhideWhenUsed="false" QFormat="true" Name="Book Title"/>
<w:LsdException Locked="false" Priority="37" Name="Bibliography"/>
<w:LsdException Locked="false" Priority="39" QFormat="true" Name="TOC Heading"/>
</w:LatentStyles>
</xml><![endif]--><!--[if gte mso 10]>
<style>
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin-top:0in;
mso-para-margin-right:0in;
mso-para-margin-bottom:10.0pt;
mso-para-margin-left:0in;
line-height:115%;
mso-pagination:widow-orphan;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;
mso-hansi-font-family:Calibri;
mso-hansi-theme-font:minor-latin;}
</style>
<![endif]--></td></tr></tbody></table></div></blockquote></body></html>