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    <element id="STEX_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantsWeightedAverageRemainingContractualTerm2" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantsWeightedAverageRemainingContractualTerm2" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
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    <element id="STEX_WarrantsExpirationDateDescription" name="WarrantsExpirationDateDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_WarrantsOutstandingWeightedAverageRemainingContractualTerm" name="WarrantsOutstandingWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightsOutstandingIntrinsicValue" name="ClassOfWarrantOrRightsOutstandingIntrinsicValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantsOrRightIssued" name="ClassOfWarrantsOrRightIssued" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsIssued" name="ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsIssued" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_WarrantsWeightedAverageRemainingContractualTermIssued" name="WarrantsWeightedAverageRemainingContractualTermIssued" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantsOrRightForfeited" name="ClassOfWarrantsOrRightForfeited" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredIntrinsicValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantsOrRightExpried" name="ClassOfWarrantsOrRightExpried" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsExpired" name="ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsExpired" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedIntrinsicValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightsWeightedAverageExercisePriceOfWarrantsOrRightsOutstanding" name="ClassOfWarrantOrRightsWeightedAverageExercisePriceOfWarrantsOrRightsOutstanding" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightsVestedAndExpectedToVestOutstanding" name="ClassOfWarrantOrRightsVestedAndExpectedToVestOutstanding" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightsWeightedAverageExercisePriceOfWarrantsOrRightsVestedAndExpectedToVestOutstanding" name="ClassOfWarrantOrRightsWeightedAverageExercisePriceOfWarrantsOrRightsVestedAndExpectedToVestOutstanding" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_WarrantsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm" name="WarrantsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightsVestedAndExpectedToVestOutstandingIntrinsicValue" name="ClassOfWarrantOrRightsVestedAndExpectedToVestOutstandingIntrinsicValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightsExercisable" name="ClassOfWarrantOrRightsExercisable" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightsWeightedAverageExercisePriceOfWarrantsOrRightsExercisable" name="ClassOfWarrantOrRightsWeightedAverageExercisePriceOfWarrantsOrRightsExercisable" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_WarrantsExercisableWeightedAverageRemainingContractualTerm" name="WarrantsExercisableWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightsExercisableIntrinsicValue" name="ClassOfWarrantOrRightsExercisableIntrinsicValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ClassOfWarrantOrRightsWeightedAverageExercisePriceOfWarrantsOrRightsExpired" name="ClassOfWarrantOrRightsWeightedAverageExercisePriceOfWarrantsOrRightsExpired" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnvestedNumberOfShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnvestedNumberOfShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedNumberOfShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedNumberOfShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedNumberOfShares" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedNumberOfShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValues" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_StockIssuedDuringPeriodSharesCashlessExerciseOfWarrants" name="StockIssuedDuringPeriodSharesCashlessExerciseOfWarrants" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_NetIncomeLossOfNonControllingInterest" name="NetIncomeLossOfNonControllingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_AverageNoncontrollingInterestPercentageOfProfitlosses" name="AverageNoncontrollingInterestPercentageOfProfitlosses" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_RoyaltyPercentageOfNetSales" name="RoyaltyPercentageOfNetSales" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_DiscountedFeePercentage" name="DiscountedFeePercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_RevenueSharePercentage" name="RevenueSharePercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_InvestorPurchaseOfSharesPercentageDescription" name="InvestorPurchaseOfSharesPercentageDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_PurchaseOfCommonStockSharesUpToCommitmentAmount" name="PurchaseOfCommonStockSharesUpToCommitmentAmount" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_AdvancedToInvestor" name="AdvancedToInvestor" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_PaymentsForAccrued" name="PaymentsForAccrued" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDueFromRelatedParty" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDueFromRelatedParty" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSalesTaxReceivable" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSalesTaxReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTradeName" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTradeName" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDevelopedTechnology" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDevelopedTechnology" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLegalAndComplianceFramework" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLegalAndComplianceFramework" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedGoodwill" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedGoodwill" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedExpenses" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayableAndAccruedExpenses" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_RoyaltyRate" name="RoyaltyRate" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_DiscountRate" name="DiscountRate" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_AdjustmentOfDeferredIncomeTaxLiabilitiesNet" name="AdjustmentOfDeferredIncomeTaxLiabilitiesNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_RevenueGrowthRateDescription" name="RevenueGrowthRateDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_SettlementsExchangeToCommonStock" name="SettlementsExchangeToCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_FairValueExchangeableSharesAmount" name="FairValueExchangeableSharesAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_InvestmentsAllOtherInvestmentsTable" name="InvestmentsAllOtherInvestmentsTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="STEX_InvestmentsAllOtherInvestmentsLineItems" name="InvestmentsAllOtherInvestmentsLineItems" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ResearchAndDevelopmentStockbasedCompensationExpenses" name="ResearchAndDevelopmentStockbasedCompensationExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_GeneralAndAdministrativeStockbasedCompensationExpenses" name="GeneralAndAdministrativeStockbasedCompensationExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ChangeInFairValuesOfDerivativeLiability" name="ChangeInFairValuesOfDerivativeLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ProceedsFromDebentures" name="ProceedsFromDebentures" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ProceedsFromSecondDebenture" name="ProceedsFromSecondDebenture" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_ProceedsFromAdditionalDebentures" name="ProceedsFromAdditionalDebentures" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_IdentifiableIntangibleAssetsForeignSubsidiary" name="IdentifiableIntangibleAssetsForeignSubsidiary" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="STEX_DeferredTaxLiabilitiesNonCurrent" name="DeferredTaxLiabilitiesNonCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
