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  <xs:element name="SubsequentEventsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="dror_SubsequentEventsDetailsTable"/>
  <xs:element name="SubsequentEventsDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_SubsequentEventsDetailsLineItems"/>
  <xs:element name="DebenturesDue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="dror_DebenturesDue"/>
  <xs:element name="IncomeTaxesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="dror_IncomeTaxesDetailsTable"/>
  <xs:element name="TaxableIncomePercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_TaxableIncomePercentage"/>
  <xs:element name="AfterJanuary12018Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_AfterJanuary12018Member"/>
  <xs:element name="AmericanAcademyOfFacialEstheticsLLCMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_AmericanAcademyOfFacialEstheticsLLCMember"/>
  <xs:element name="BridgeNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_BridgeNotesMember"/>
  <xs:element name="ConsultingAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_ConsultingAgreementMember"/>
  <xs:element name="DebenturesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_DebenturesMember"/>
  <xs:element name="DeferredTaxAssetsValuationAllowanceMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_DeferredTaxAssetsValuationAllowanceMember"/>
  <xs:element name="EnglanderConsultingAgreementMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_EnglanderConsultingAgreementMember"/>
  <xs:element name="EquityIncentivePlanMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_EquityIncentivePlanMember"/>
  <xs:element name="FebruaryDebenturesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_FebruaryDebenturesMember"/>
  <xs:element name="FirstDebenturesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_FirstDebenturesMember"/>
  <xs:element name="FundedPortionMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_FundedPortionMember"/>
  <xs:element name="GeneralAndAdministrativeExpensesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_GeneralAndAdministrativeExpensesMember"/>
  <xs:element name="MrEnglanderMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_MrEnglanderMember"/>
  <xs:element name="NotesPayableMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_NotesPayableMember"/>
  <xs:element name="OrioleWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_OrioleWarrantsMember"/>
  <xs:element name="PriorTo2018Member" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_PriorTo2018Member"/>
  <xs:element name="PrivatePlacementWarrantsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_PrivatePlacementWarrantsMember"/>
  <xs:element name="ResearchAndDevelopmentExpensesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_ResearchAndDevelopmentExpensesMember"/>
  <xs:element name="SecuritiesPurchaseAgreementsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_SecuritiesPurchaseAgreementsMember"/>
  <xs:element name="SeriesAPreferredStocksMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_SeriesAPreferredStocksMember"/>
  <xs:element name="SeveranceLiabilityMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_SeveranceLiabilityMember"/>
  <xs:element name="StockOptionsMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_StockOptionsMember"/>
  <xs:element name="TreasuryStocksMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_TreasuryStocksMember"/>
  <xs:element name="WarrantSubscriptionMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_WarrantSubscriptionMember"/>
  <xs:element name="AccruedSeveranceAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_AccruedSeveranceAbstract"/>
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  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="dror_DocumentAndEntityInformationAbstract"/>
</xs:schema>
