CICLOS BINARIOS DE REFRIGERACION CON COMPONENTES MULTIPLES PARA LA LICUEFACCION DE GAS NATURAL

SE REFIERE A UN PROCEDIMIENTO PARA LA LICUEFACCION DE GAS NATURAL, CON EL FIN DE OBTENER UN PRODUCTO LIQUIDO CON UNA TEMPERATURA MAYOR A -112°C Y A UNA PRESION SUFICIENTE PARA QUE DICHO PRODUCTO ESTE POR DEBAJO DE SU PUNTO DE BURBUJEO, QUE COMPRENDE: a) ENFRIAR Y LICUAR UNA CORRIENTE DE GAS NATURAL...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: KIMBLE E. LAWRENCE
Format: Patent
Sprache:spa
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator KIMBLE E. LAWRENCE
description SE REFIERE A UN PROCEDIMIENTO PARA LA LICUEFACCION DE GAS NATURAL, CON EL FIN DE OBTENER UN PRODUCTO LIQUIDO CON UNA TEMPERATURA MAYOR A -112°C Y A UNA PRESION SUFICIENTE PARA QUE DICHO PRODUCTO ESTE POR DEBAJO DE SU PUNTO DE BURBUJEO, QUE COMPRENDE: a) ENFRIAR Y LICUAR UNA CORRIENTE DE GAS NATURAL MEDIANTE INTERCAMBIO CALORIFICO INDIRECTO CON UN REFRIGERANTE DE BAJO NIVEL CON COMPONENTES MULTIPLES EN UN PRIMER CICLO DE REFRIGERACION CERRADO; b) CALENTAR DICHO REFRIGERANTE MEDIANTE INTERCAMBIO CALORIFICO EN CONTRACORRIENTE CON OTRA CORRIENTE DE DICHO REFRIGERANTE Y MEDIANTE INTERCAMBIO CALORIFICO OPUESTO A UNA CORRIENTE DEL REFRIGERANTE DE ALTO NIVEL; c) COMPRIMIR EL REFRIGERANTE DE BAJO NIVEL CALENTADO DE LA ETAPA (b) A UNA PRESION ELEVADA Y ENFRIARLO POSTERIORMENTE CONTRA UN FLUIDO REFRIGERNATE EXTERNO; d) ENFRIAR ADICIONALMENTE DICHO REFRIGERANTE DE BAJO NIVEL MEDIANTE INTERCAMBIO CALORIFICO OPUESTO A UNA SEGUNDA CORRIENTE DEL REFRIGERANTE DE ALTO NIVEL CON COMPONENTES MULTIPLES Y OPUESTO AL REFRIGERANTE DE BAJO NIVEL DE LA ETAPA (b), SIENDO DICHO REFRIGERANTE DE BAJO NIVEL CALENTADO DURANTE LA TERMOPERMUTACION; Y, e) COMPRIMIR EL REFRIGERANTE DE ALTO NIVEL CALENTADO, DE LA ETAPA (d) A UNA PRESION ELEVADA Y ENFRIARLO POSTERIORMENTE OPUESTO A UN FLUIDO REFRIGERANTE EXTERNO A process is disclosed for liquefying natural gas to produce a pressurized liquid product having a temperature above -112° C. using two mixed refrigerants in two closed cycles, a low-level refrigerant to cool and liquefy the natural gas and a high-level refrigerant to cool the low-level refrigerant. After being used to liquefy the natural gas, the low-level refrigerant is (a) warmed by heat exchange in countercurrent relationship with another stream of the low-level refrigerant and by heat exchange against a first stream of the high-level refrigerant, (b) compressed to an elevated pressure, and (c) aftercooled against an external cooling fluid. The low-level refrigerant is then cooled by heat exchange against a second stream of the high-level mixed refrigerant and by exchange against the low-level refrigerant. The high-level refrigerant is warmed by the heat exchange with the low-level refrigerant, compressed to an elevated pressure, and aftercooled against an external cooling fluid.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_PE20001445A1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>PE20001445A1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_PE20001445A13</originalsourceid><addsrcrecordid>eNqNi0EKwjAQRbNxIeod4gGEVOsBxnFSB9IkpMm2pUhciRbq_TEUDyD8z3-L99eiR0bjOnlhC4ELXEkG0oEbCoDsrMSlrXeWbKROtslE9qaQhwDSlDAm0oCLXv4NdNJCTAHMVqwe43POu99uxF5TxNshT-8hz9N4z6_8GTwdlVJVXZ-hOv3jfAH8ETKH</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>CICLOS BINARIOS DE REFRIGERACION CON COMPONENTES MULTIPLES PARA LA LICUEFACCION DE GAS NATURAL</title><source>esp@cenet</source><creator>KIMBLE E. LAWRENCE</creator><creatorcontrib>KIMBLE E. LAWRENCE</creatorcontrib><description>SE REFIERE A UN PROCEDIMIENTO PARA LA LICUEFACCION DE GAS NATURAL, CON EL FIN DE OBTENER UN PRODUCTO LIQUIDO CON UNA TEMPERATURA MAYOR A -112°C Y A UNA PRESION SUFICIENTE PARA QUE DICHO PRODUCTO ESTE POR DEBAJO DE SU PUNTO DE BURBUJEO, QUE COMPRENDE: a) ENFRIAR Y LICUAR UNA CORRIENTE DE GAS NATURAL MEDIANTE INTERCAMBIO CALORIFICO INDIRECTO CON UN REFRIGERANTE DE BAJO NIVEL CON COMPONENTES MULTIPLES EN UN PRIMER CICLO DE REFRIGERACION CERRADO; b) CALENTAR DICHO REFRIGERANTE MEDIANTE INTERCAMBIO CALORIFICO EN CONTRACORRIENTE CON OTRA CORRIENTE DE DICHO REFRIGERANTE Y MEDIANTE INTERCAMBIO CALORIFICO OPUESTO A UNA CORRIENTE DEL REFRIGERANTE DE ALTO NIVEL; c) COMPRIMIR EL REFRIGERANTE DE BAJO NIVEL CALENTADO DE LA ETAPA (b) A UNA PRESION ELEVADA Y ENFRIARLO POSTERIORMENTE CONTRA UN FLUIDO REFRIGERNATE EXTERNO; d) ENFRIAR ADICIONALMENTE DICHO REFRIGERANTE DE BAJO NIVEL MEDIANTE INTERCAMBIO CALORIFICO OPUESTO A UNA SEGUNDA CORRIENTE DEL REFRIGERANTE DE ALTO NIVEL CON COMPONENTES MULTIPLES Y OPUESTO AL REFRIGERANTE DE BAJO NIVEL DE LA ETAPA (b), SIENDO DICHO REFRIGERANTE DE BAJO NIVEL CALENTADO DURANTE LA TERMOPERMUTACION; Y, e) COMPRIMIR EL REFRIGERANTE DE ALTO NIVEL CALENTADO, DE LA ETAPA (d) A UNA PRESION ELEVADA Y ENFRIARLO POSTERIORMENTE OPUESTO A UN FLUIDO REFRIGERANTE EXTERNO A process is disclosed for liquefying natural gas to produce a pressurized liquid product having a temperature above -112° C. using two mixed refrigerants in two closed cycles, a low-level refrigerant to cool and liquefy the natural gas and a high-level refrigerant to cool the low-level refrigerant. After being used to liquefy the natural gas, the low-level refrigerant is (a) warmed by heat exchange in countercurrent relationship with another stream of the low-level refrigerant and by heat exchange against a first stream of the high-level refrigerant, (b) compressed to an elevated pressure, and (c) aftercooled against an external cooling fluid. The low-level refrigerant is then cooled by heat exchange against a second stream of the high-level mixed refrigerant and by exchange against the low-level refrigerant. The high-level refrigerant is warmed by the heat exchange with the low-level refrigerant, compressed to an elevated pressure, and aftercooled against an external cooling fluid.</description><edition>7</edition><language>spa</language><subject>ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL ; BLASTING ; CHEMISTRY ; COMBINED HEATING AND REFRIGERATION SYSTEMS ; FIRELIGHTERS ; FUELS ; FUELS NOT OTHERWISE PROVIDED FOR ; HEAT PUMP SYSTEMS ; HEATING ; LIGHTING ; LIQUEFACTION SOLIDIFICATION OF GASES ; LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; LIQUEFIED PETROLEUM GAS ; LUBRICANTS ; MANUFACTURE OR STORAGE OF ICE ; MECHANICAL ENGINEERING ; METALLURGY ; MIXTURES BY PRESSURE AND COLD TREATMENT ; NATURAL GAS ; PEAT ; PETROLEUM, GAS OR COKE INDUSTRIES ; REFRIGERATION MACHINES, PLANTS OR SYSTEMS ; REFRIGERATION OR COOLING ; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K ; TECHNICAL GASES CONTAINING CARBON MONOXIDE ; WEAPONS</subject><creationdate>2000</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20001226&amp;DB=EPODOC&amp;CC=PE&amp;NR=20001445A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20001226&amp;DB=EPODOC&amp;CC=PE&amp;NR=20001445A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KIMBLE E. LAWRENCE</creatorcontrib><title>CICLOS BINARIOS DE REFRIGERACION CON COMPONENTES MULTIPLES PARA LA LICUEFACCION DE GAS NATURAL</title><description>SE REFIERE A UN PROCEDIMIENTO PARA LA LICUEFACCION DE GAS NATURAL, CON EL FIN DE OBTENER UN PRODUCTO LIQUIDO CON UNA TEMPERATURA MAYOR A -112°C Y A UNA PRESION SUFICIENTE PARA QUE DICHO PRODUCTO ESTE POR DEBAJO DE SU PUNTO DE BURBUJEO, QUE COMPRENDE: a) ENFRIAR Y LICUAR UNA CORRIENTE DE GAS NATURAL MEDIANTE INTERCAMBIO CALORIFICO INDIRECTO CON UN REFRIGERANTE DE BAJO NIVEL CON COMPONENTES MULTIPLES EN UN PRIMER CICLO DE REFRIGERACION CERRADO; b) CALENTAR DICHO REFRIGERANTE MEDIANTE INTERCAMBIO CALORIFICO EN CONTRACORRIENTE CON OTRA CORRIENTE DE DICHO REFRIGERANTE Y MEDIANTE INTERCAMBIO CALORIFICO OPUESTO A UNA CORRIENTE DEL REFRIGERANTE DE ALTO NIVEL; c) COMPRIMIR EL REFRIGERANTE DE BAJO NIVEL CALENTADO DE LA ETAPA (b) A UNA PRESION ELEVADA Y ENFRIARLO POSTERIORMENTE CONTRA UN FLUIDO REFRIGERNATE EXTERNO; d) ENFRIAR ADICIONALMENTE DICHO REFRIGERANTE DE BAJO NIVEL MEDIANTE INTERCAMBIO CALORIFICO OPUESTO A UNA SEGUNDA CORRIENTE DEL REFRIGERANTE DE ALTO NIVEL CON COMPONENTES MULTIPLES Y OPUESTO AL REFRIGERANTE DE BAJO NIVEL DE LA ETAPA (b), SIENDO DICHO REFRIGERANTE DE BAJO NIVEL CALENTADO DURANTE LA TERMOPERMUTACION; Y, e) COMPRIMIR EL REFRIGERANTE DE ALTO NIVEL CALENTADO, DE LA ETAPA (d) A UNA PRESION ELEVADA Y ENFRIARLO POSTERIORMENTE OPUESTO A UN FLUIDO REFRIGERANTE EXTERNO A process is disclosed for liquefying natural gas to produce a pressurized liquid product having a temperature above -112° C. using two mixed refrigerants in two closed cycles, a low-level refrigerant to cool and liquefy the natural gas and a high-level refrigerant to cool the low-level refrigerant. After being used to liquefy the natural gas, the low-level refrigerant is (a) warmed by heat exchange in countercurrent relationship with another stream of the low-level refrigerant and by heat exchange against a first stream of the high-level refrigerant, (b) compressed to an elevated pressure, and (c) aftercooled against an external cooling fluid. The low-level refrigerant is then cooled by heat exchange against a second stream of the high-level mixed refrigerant and by exchange against the low-level refrigerant. The high-level refrigerant is warmed by the heat exchange with the low-level refrigerant, compressed to an elevated pressure, and aftercooled against an external cooling fluid.</description><subject>ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL</subject><subject>BLASTING</subject><subject>CHEMISTRY</subject><subject>COMBINED HEATING AND REFRIGERATION SYSTEMS</subject><subject>FIRELIGHTERS</subject><subject>FUELS</subject><subject>FUELS NOT OTHERWISE PROVIDED FOR</subject><subject>HEAT PUMP SYSTEMS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>LIQUEFACTION SOLIDIFICATION OF GASES</subject><subject>LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS</subject><subject>LIQUEFIED PETROLEUM GAS</subject><subject>LUBRICANTS</subject><subject>MANUFACTURE OR STORAGE OF ICE</subject><subject>MECHANICAL ENGINEERING</subject><subject>METALLURGY</subject><subject>MIXTURES BY PRESSURE AND COLD TREATMENT</subject><subject>NATURAL GAS</subject><subject>PEAT</subject><subject>PETROLEUM, GAS OR COKE INDUSTRIES</subject><subject>REFRIGERATION MACHINES, PLANTS OR SYSTEMS</subject><subject>REFRIGERATION OR COOLING</subject><subject>SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K</subject><subject>TECHNICAL GASES CONTAINING CARBON MONOXIDE</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2000</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNi0EKwjAQRbNxIeod4gGEVOsBxnFSB9IkpMm2pUhciRbq_TEUDyD8z3-L99eiR0bjOnlhC4ELXEkG0oEbCoDsrMSlrXeWbKROtslE9qaQhwDSlDAm0oCLXv4NdNJCTAHMVqwe43POu99uxF5TxNshT-8hz9N4z6_8GTwdlVJVXZ-hOv3jfAH8ETKH</recordid><startdate>20001226</startdate><enddate>20001226</enddate><creator>KIMBLE E. LAWRENCE</creator><scope>EVB</scope></search><sort><creationdate>20001226</creationdate><title>CICLOS BINARIOS DE REFRIGERACION CON COMPONENTES MULTIPLES PARA LA LICUEFACCION DE GAS NATURAL</title><author>KIMBLE E. LAWRENCE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_PE20001445A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>spa</language><creationdate>2000</creationdate><topic>ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL</topic><topic>BLASTING</topic><topic>CHEMISTRY</topic><topic>COMBINED HEATING AND REFRIGERATION SYSTEMS</topic><topic>FIRELIGHTERS</topic><topic>FUELS</topic><topic>FUELS NOT OTHERWISE PROVIDED FOR</topic><topic>HEAT PUMP SYSTEMS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>LIQUEFACTION SOLIDIFICATION OF GASES</topic><topic>LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS</topic><topic>LIQUEFIED PETROLEUM GAS</topic><topic>LUBRICANTS</topic><topic>MANUFACTURE OR STORAGE OF ICE</topic><topic>MECHANICAL ENGINEERING</topic><topic>METALLURGY</topic><topic>MIXTURES BY PRESSURE AND COLD TREATMENT</topic><topic>NATURAL GAS</topic><topic>PEAT</topic><topic>PETROLEUM, GAS OR COKE INDUSTRIES</topic><topic>REFRIGERATION MACHINES, PLANTS OR SYSTEMS</topic><topic>REFRIGERATION OR COOLING</topic><topic>SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K</topic><topic>TECHNICAL GASES CONTAINING CARBON MONOXIDE</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>KIMBLE E. LAWRENCE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KIMBLE E. LAWRENCE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>CICLOS BINARIOS DE REFRIGERACION CON COMPONENTES MULTIPLES PARA LA LICUEFACCION DE GAS NATURAL</title><date>2000-12-26</date><risdate>2000</risdate><abstract>SE REFIERE A UN PROCEDIMIENTO PARA LA LICUEFACCION DE GAS NATURAL, CON EL FIN DE OBTENER UN PRODUCTO LIQUIDO CON UNA TEMPERATURA MAYOR A -112°C Y A UNA PRESION SUFICIENTE PARA QUE DICHO PRODUCTO ESTE POR DEBAJO DE SU PUNTO DE BURBUJEO, QUE COMPRENDE: a) ENFRIAR Y LICUAR UNA CORRIENTE DE GAS NATURAL MEDIANTE INTERCAMBIO CALORIFICO INDIRECTO CON UN REFRIGERANTE DE BAJO NIVEL CON COMPONENTES MULTIPLES EN UN PRIMER CICLO DE REFRIGERACION CERRADO; b) CALENTAR DICHO REFRIGERANTE MEDIANTE INTERCAMBIO CALORIFICO EN CONTRACORRIENTE CON OTRA CORRIENTE DE DICHO REFRIGERANTE Y MEDIANTE INTERCAMBIO CALORIFICO OPUESTO A UNA CORRIENTE DEL REFRIGERANTE DE ALTO NIVEL; c) COMPRIMIR EL REFRIGERANTE DE BAJO NIVEL CALENTADO DE LA ETAPA (b) A UNA PRESION ELEVADA Y ENFRIARLO POSTERIORMENTE CONTRA UN FLUIDO REFRIGERNATE EXTERNO; d) ENFRIAR ADICIONALMENTE DICHO REFRIGERANTE DE BAJO NIVEL MEDIANTE INTERCAMBIO CALORIFICO OPUESTO A UNA SEGUNDA CORRIENTE DEL REFRIGERANTE DE ALTO NIVEL CON COMPONENTES MULTIPLES Y OPUESTO AL REFRIGERANTE DE BAJO NIVEL DE LA ETAPA (b), SIENDO DICHO REFRIGERANTE DE BAJO NIVEL CALENTADO DURANTE LA TERMOPERMUTACION; Y, e) COMPRIMIR EL REFRIGERANTE DE ALTO NIVEL CALENTADO, DE LA ETAPA (d) A UNA PRESION ELEVADA Y ENFRIARLO POSTERIORMENTE OPUESTO A UN FLUIDO REFRIGERANTE EXTERNO A process is disclosed for liquefying natural gas to produce a pressurized liquid product having a temperature above -112° C. using two mixed refrigerants in two closed cycles, a low-level refrigerant to cool and liquefy the natural gas and a high-level refrigerant to cool the low-level refrigerant. After being used to liquefy the natural gas, the low-level refrigerant is (a) warmed by heat exchange in countercurrent relationship with another stream of the low-level refrigerant and by heat exchange against a first stream of the high-level refrigerant, (b) compressed to an elevated pressure, and (c) aftercooled against an external cooling fluid. The low-level refrigerant is then cooled by heat exchange against a second stream of the high-level mixed refrigerant and by exchange against the low-level refrigerant. The high-level refrigerant is warmed by the heat exchange with the low-level refrigerant, compressed to an elevated pressure, and aftercooled against an external cooling fluid.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language spa
recordid cdi_epo_espacenet_PE20001445A1
source esp@cenet
subjects ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL
BLASTING
CHEMISTRY
COMBINED HEATING AND REFRIGERATION SYSTEMS
FIRELIGHTERS
FUELS
FUELS NOT OTHERWISE PROVIDED FOR
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS
LIQUEFIED PETROLEUM GAS
LUBRICANTS
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
METALLURGY
MIXTURES BY PRESSURE AND COLD TREATMENT
NATURAL GAS
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K
TECHNICAL GASES CONTAINING CARBON MONOXIDE
WEAPONS
title CICLOS BINARIOS DE REFRIGERACION CON COMPONENTES MULTIPLES PARA LA LICUEFACCION DE GAS NATURAL
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-02T17%3A06%3A09IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=KIMBLE%20E.%20LAWRENCE&rft.date=2000-12-26&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EPE20001445A1%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true