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	<infoTable>
		<nameOfIssuer>ABBVIE INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>00287Y109</cusip>
		<value>45</value>
		<shrsOrPrnAmt>
			<sshPrnamt>515</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>515</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>ADVERUM BIOTECHNOLOGIES INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>00773U108</cusip>
		<value>1545</value>
		<shrsOrPrnAmt>
			<sshPrnamt>150000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>150000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>ALTICE USA INC</nameOfIssuer>
		<titleOfClass>CL A</titleOfClass>
		<cusip>02156K103</cusip>
		<value>15694</value>
		<shrsOrPrnAmt>
			<sshPrnamt>603600</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>603600</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>ALTRIA GROUP INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>02209S103</cusip>
		<value>46</value>
		<shrsOrPrnAmt>
			<sshPrnamt>1200</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>1200</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>AMAG PHARMACEUTICALS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>00163U106</cusip>
		<value>12220</value>
		<shrsOrPrnAmt>
			<sshPrnamt>1299994</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>1299994</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>AMERICAN EXPRESS CO</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>025816109</cusip>
		<value>2506</value>
		<shrsOrPrnAmt>
			<sshPrnamt>25000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>25000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>AMERIPRISE FINL INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>03076C106</cusip>
		<value>2465</value>
		<shrsOrPrnAmt>
			<sshPrnamt>15993</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>15993</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>AT&amp;T INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>00206R102</cusip>
		<value>47</value>
		<shrsOrPrnAmt>
			<sshPrnamt>1650</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>1650</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>AVIAT NETWORKS INC</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>05366Y201</cusip>
		<value>1</value>
		<shrsOrPrnAmt>
			<sshPrnamt>33</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>33</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>B RILEY PRIN MERGER CORP II</nameOfIssuer>
		<titleOfClass>CL A</titleOfClass>
		<cusip>05600U106</cusip>
		<value>5005</value>
		<shrsOrPrnAmt>
			<sshPrnamt>500000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>500000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>B RILEY PRIN MERGER CORP II</nameOfIssuer>
		<titleOfClass>*W EXP 05/06/202</titleOfClass>
		<cusip>05600U114</cusip>
		<value>338</value>
		<shrsOrPrnAmt>
			<sshPrnamt>250000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>250000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>BANK NEW YORK MELLON CORP</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>064058100</cusip>
		<value>69</value>
		<shrsOrPrnAmt>
			<sshPrnamt>2000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>2000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>BLACKSTONE GROUP INC</nameOfIssuer>
		<titleOfClass>COM CL A</titleOfClass>
		<cusip>09260D107</cusip>
		<value>4176</value>
		<shrsOrPrnAmt>
			<sshPrnamt>80000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>80000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>BLUEBIRD BIO INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>09609G100</cusip>
		<value>1349</value>
		<shrsOrPrnAmt>
			<sshPrnamt>25000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>25000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>BRUNSWICK CORP</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>117043109</cusip>
		<value>18032</value>
		<shrsOrPrnAmt>
			<sshPrnamt>306099</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>306099</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>CADENCE DESIGN SYSTEM INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>127387108</cusip>
		<value>56</value>
		<shrsOrPrnAmt>
			<sshPrnamt>525</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>525</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>CAREDX INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>14167L103</cusip>
		<value>4742</value>
		<shrsOrPrnAmt>
			<sshPrnamt>125000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>125000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>CARRIER GLOBAL CORPORATION</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>14448C104</cusip>
		<value>183</value>
		<shrsOrPrnAmt>
			<sshPrnamt>6000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>6000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>CASSAVA SCIENCES INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>14817C107</cusip>
		<value>7879</value>
		<shrsOrPrnAmt>
			<sshPrnamt>684503</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>684503</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>CODEXIS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>192005106</cusip>
		<value>6799</value>
		<shrsOrPrnAmt>
			<sshPrnamt>579116</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>579116</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>CUE BIOPHARMA INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>22978P106</cusip>
		<value>2258</value>
		<shrsOrPrnAmt>
			<sshPrnamt>150000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>150000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>DCP MIDSTREAM LP</nameOfIssuer>
		<titleOfClass>COM UT LTD PTN</titleOfClass>
		<cusip>23311P100</cusip>
		<value>31821</value>
		<shrsOrPrnAmt>
			<sshPrnamt>2848805</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>2848805</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>DISH NETWORK CORPORATION</nameOfIssuer>
		<titleOfClass>CL A</titleOfClass>
		<cusip>25470M109</cusip>
		<value>2250</value>
		<shrsOrPrnAmt>
			<sshPrnamt>77500</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>77500</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>DUOS TECHNOLOGIES GROUP INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>266042407</cusip>
		<value>1725</value>
		<shrsOrPrnAmt>
			<sshPrnamt>453616</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>453616</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>DURECT CORP</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>266605104</cusip>
		<value>45169</value>
		<shrsOrPrnAmt>
			<sshPrnamt>26414656</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>26414656</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>ENTERPRISE PRODS PARTNERS L</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>293792107</cusip>
		<value>1994</value>
		<shrsOrPrnAmt>
			<sshPrnamt>126301</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>126301</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>EXXON MOBIL CORP</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>30231G102</cusip>
		<value>37</value>
		<shrsOrPrnAmt>
			<sshPrnamt>1075</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>1075</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>FATE THERAPEUTICS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>31189P102</cusip>
		<value>3997</value>
		<shrsOrPrnAmt>
			<sshPrnamt>100000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>100000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>FG NEW AMER ACQUISITION CORP</nameOfIssuer>
		<titleOfClass>UNIT 08/31/2027</titleOfClass>
		<cusip>30259V205</cusip>
		<value>5005</value>
		<shrsOrPrnAmt>
			<sshPrnamt>500000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>500000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>GRACE W R &amp; CO DEL NEW</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>38388F108</cusip>
		<value>8096</value>
		<shrsOrPrnAmt>
			<sshPrnamt>200934</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>200934</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>GRITSTONE ONCOLOGY INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>39868T105</cusip>
		<value>448</value>
		<shrsOrPrnAmt>
			<sshPrnamt>169039</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>169039</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>HAYMAKER ACQUISITION CORP II</nameOfIssuer>
		<titleOfClass>*W EXP 10/31/202</titleOfClass>
		<cusip>42087L119</cusip>
		<value>330</value>
		<shrsOrPrnAmt>
			<sshPrnamt>333333</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>333333</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>HC2 HLDGS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>404139107</cusip>
		<value>173</value>
		<shrsOrPrnAmt>
			<sshPrnamt>71543</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>71543</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>IDENTIV INC</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>45170X205</cusip>
		<value>13749</value>
		<shrsOrPrnAmt>
			<sshPrnamt>2196389</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>2196389</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>INDEPENDENCE HLDG CO NEW</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>453440307</cusip>
		<value>2063</value>
		<shrsOrPrnAmt>
			<sshPrnamt>54711</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>54711</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>INFINITY PHARMACEUTICALS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>45665G303</cusip>
		<value>292</value>
		<shrsOrPrnAmt>
			<sshPrnamt>250000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>250000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>INTELLICHECK INC</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>45817G201</cusip>
		<value>18265</value>
		<shrsOrPrnAmt>
			<sshPrnamt>2738314</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>2738314</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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		<nameOfIssuer>INTEVAC INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>461148108</cusip>
		<value>27271</value>
		<shrsOrPrnAmt>
			<sshPrnamt>4949355</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>4949355</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>JPMORGAN CHASE &amp; CO</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>46625H100</cusip>
		<value>2888</value>
		<shrsOrPrnAmt>
			<sshPrnamt>30000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>30000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>L3HARRIS TECHNOLOGIES INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>502431109</cusip>
		<value>272</value>
		<shrsOrPrnAmt>
			<sshPrnamt>1600</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>1600</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>LIBERTY GLOBAL PLC</nameOfIssuer>
		<titleOfClass>SHS CL C</titleOfClass>
		<cusip>G5480U120</cusip>
		<value>1430</value>
		<shrsOrPrnAmt>
			<sshPrnamt>69618</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>69618</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>LIBERTY GLOBAL PLC</nameOfIssuer>
		<titleOfClass>SHS CL A</titleOfClass>
		<cusip>G5480U104</cusip>
		<value>483</value>
		<shrsOrPrnAmt>
			<sshPrnamt>22989</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>22989</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>LIBERTY LATIN AMERICA LTD</nameOfIssuer>
		<titleOfClass>COM CL A</titleOfClass>
		<cusip>G9001E102</cusip>
		<value>33</value>
		<shrsOrPrnAmt>
			<sshPrnamt>4017</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>4017</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>LIBERTY LATIN AMERICA LTD</nameOfIssuer>
		<titleOfClass>COM CL C</titleOfClass>
		<cusip>G9001E128</cusip>
		<value>134</value>
		<shrsOrPrnAmt>
			<sshPrnamt>16522</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>16522</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>LIBERTY MEDIA CORP DEL</nameOfIssuer>
		<titleOfClass>COM A SIRIUSXM</titleOfClass>
		<cusip>531229409</cusip>
		<value>3436</value>
		<shrsOrPrnAmt>
			<sshPrnamt>103602</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>103602</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>LIBERTY MEDIA CORP DEL</nameOfIssuer>
		<titleOfClass>COM C BRAVES GRP</titleOfClass>
		<cusip>531229888</cusip>
		<value>435</value>
		<shrsOrPrnAmt>
			<sshPrnamt>20717</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>20717</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>LIBERTY MEDIA CORP DEL</nameOfIssuer>
		<titleOfClass>COM C SIRIUSXM</titleOfClass>
		<cusip>531229607</cusip>
		<value>7820</value>
		<shrsOrPrnAmt>
			<sshPrnamt>236396</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>236396</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>LIBERTY MEDIA CORP DEL</nameOfIssuer>
		<titleOfClass>COM A BRAVES GRP</titleOfClass>
		<cusip>531229706</cusip>
		<value>216</value>
		<shrsOrPrnAmt>
			<sshPrnamt>10356</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>10356</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>LINDE PLC</nameOfIssuer>
		<titleOfClass>SHS</titleOfClass>
		<cusip>G5494J103</cusip>
		<value>45870</value>
		<shrsOrPrnAmt>
			<sshPrnamt>192627</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>192627</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>LIONS GATE ENTMNT CORP</nameOfIssuer>
		<titleOfClass>CL B NON VTG</titleOfClass>
		<cusip>535919500</cusip>
		<value>143</value>
		<shrsOrPrnAmt>
			<sshPrnamt>16413</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>16413</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>LIQTECH INTL INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>53632A201</cusip>
		<value>18239</value>
		<shrsOrPrnAmt>
			<sshPrnamt>2158448</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>2158448</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>LUMENTUM HLDGS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>55024U109</cusip>
		<value>50</value>
		<shrsOrPrnAmt>
			<sshPrnamt>660</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>660</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>MAGENTA THERAPEUTICS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>55910K108</cusip>
		<value>2393</value>
		<shrsOrPrnAmt>
			<sshPrnamt>351875</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>351875</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>MARINUS PHARMACEUTICALS INC</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>56854Q200</cusip>
		<value>7459</value>
		<shrsOrPrnAmt>
			<sshPrnamt>580462</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>580462</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>NGL ENERGY PARTNERS LP</nameOfIssuer>
		<titleOfClass>COM UNIT REPST</titleOfClass>
		<cusip>62913M107</cusip>
		<value>10751</value>
		<shrsOrPrnAmt>
			<sshPrnamt>2714937</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>2714937</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>NUSTAR ENERGY LP</nameOfIssuer>
		<titleOfClass>UNIT COM</titleOfClass>
		<cusip>67058H102</cusip>
		<value>4625</value>
		<shrsOrPrnAmt>
			<sshPrnamt>435500</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>435500</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>ORBITAL ENERGY GROUP INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>68559A109</cusip>
		<value>2294</value>
		<shrsOrPrnAmt>
			<sshPrnamt>3700542</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>3700542</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>ORCHARD THERAPEUTICS PLC</nameOfIssuer>
		<titleOfClass>ADS</titleOfClass>
		<cusip>68570P101</cusip>
		<value>1028</value>
		<shrsOrPrnAmt>
			<sshPrnamt>250000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>250000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>OTIS WORLDWIDE CORP</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>68902V107</cusip>
		<value>187</value>
		<shrsOrPrnAmt>
			<sshPrnamt>3000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>3000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>PAYPAL HLDGS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>70450Y103</cusip>
		<value>985</value>
		<shrsOrPrnAmt>
			<sshPrnamt>5000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>5000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>PRGX GLOBAL INC</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>69357C503</cusip>
		<value>38</value>
		<shrsOrPrnAmt>
			<sshPrnamt>7938</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>7938</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>RAYTHEON TECHNOLOGIES CORP</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>75513E101</cusip>
		<value>345</value>
		<shrsOrPrnAmt>
			<sshPrnamt>6000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>6000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>RICEBRAN TECHNOLOGIES</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>762831204</cusip>
		<value>715</value>
		<shrsOrPrnAmt>
			<sshPrnamt>1703334</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>1703334</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>ROYALTY PHARMA PLC</nameOfIssuer>
		<titleOfClass>SHS CL A</titleOfClass>
		<cusip>G7709Q104</cusip>
		<value>46949</value>
		<shrsOrPrnAmt>
			<sshPrnamt>1115980</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>1115980</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>S&amp;P GLOBAL INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>78409V104</cusip>
		<value>14424</value>
		<shrsOrPrnAmt>
			<sshPrnamt>40000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>40000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>SHELL MIDSTREAM PARTNERS L P</nameOfIssuer>
		<titleOfClass>UNIT LTD INT</titleOfClass>
		<cusip>822634101</cusip>
		<value>8640</value>
		<shrsOrPrnAmt>
			<sshPrnamt>913347</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
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		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>913347</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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		<nameOfIssuer>SPDR GOLD TR</nameOfIssuer>
		<titleOfClass>GOLD SHS</titleOfClass>
		<cusip>78463V107</cusip>
		<value>84132</value>
		<shrsOrPrnAmt>
			<sshPrnamt>475000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>475000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>SPROTT PHYSICAL GOLD TR</nameOfIssuer>
		<titleOfClass>UNIT</titleOfClass>
		<cusip>85207H104</cusip>
		<value>189</value>
		<shrsOrPrnAmt>
			<sshPrnamt>12540</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>12540</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>TERADYNE INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>880770102</cusip>
		<value>48</value>
		<shrsOrPrnAmt>
			<sshPrnamt>600</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>600</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>TG THERAPEUTICS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>88322Q108</cusip>
		<value>1873</value>
		<shrsOrPrnAmt>
			<sshPrnamt>70000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>70000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>THOR INDS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>885160101</cusip>
		<value>10455</value>
		<shrsOrPrnAmt>
			<sshPrnamt>109753</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>109753</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>X4 PHARMACEUTICALS INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>98420X103</cusip>
		<value>242</value>
		<shrsOrPrnAmt>
			<sshPrnamt>35730</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>35730</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>XEROX HOLDINGS CORP</nameOfIssuer>
		<titleOfClass>COM NEW</titleOfClass>
		<cusip>98421M106</cusip>
		<value>31463</value>
		<shrsOrPrnAmt>
			<sshPrnamt>1676225</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
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		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>1676225</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>XILINX INC</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>983919101</cusip>
		<value>55</value>
		<shrsOrPrnAmt>
			<sshPrnamt>530</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>530</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>XPERI HOLDING CORP</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>98390M103</cusip>
		<value>1</value>
		<shrsOrPrnAmt>
			<sshPrnamt>90</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>90</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
</informationTable>
