Crew Half-Duty Day: Today was a half duty day for the USOS crew following a week of CDRA operations and activities associated with SpX-6 unberthing, currently scheduled for May 21. Gene, Immune and Cellular Responses to Single and Combined Space Flight Conditions – A (Triplelux-A): Cristoforetti closed out the Triplelux-A experiment today. She unstowed and removed the Experiment Container (EC) from Biolab, removed the EC Handling Mechanism (HM) Interface and photo documented the Interface bags, then retrieved the Automatic Ambient Stowage (AAS). All hardware was then stowed per the plan. Triplelux-A uses a rat macrophage cell line to investigate and compare the ability of macrophages to kill pathogens under normal gravity and microgravity conditions. The goal is to gain a better understanding of immune suppression in spaceflight. Rodent Research-2 Center for the Advancement of Science in Space (RR-2 CASIS): Virts and Kelly performed gather and setup for Monday’s RR-2 sample collection, the third of four collections. The crew configured the Bone Densitometer, as well as the Microgravity Science Glovebox (MSG). The primary objective of this research is to monitor the effects of the space environment on the musculoskeletal and neurological systems of mice as model organisms of human health and disease. Skin-B: Cristoforetti repeated the Skin-B activity performed earlier this week (Flight Day 150 session), having found a missing cable. She performed Corneometer (measuring the hydration level of the stratus coreum, or outer layer of the skin), Tewameter (skin barrier function measurement), and Visioscan (skin surface topography) measurements in support of the Skin-B experiment. The Skin-B investigation aims to improve the understanding of skin aging which is slow on Earth but greatly accelerated in space. This will also provide insights into the aging process in other (similar) bodily tissues in general. Node 3 (N3) Carbon Dioxide Removal Assembly (CDRA) Operations: Yesterday Virts and Kelly completed N3 CDRA reassembly and installed CDRA back in the rack. Today the crew completed maintenance by reconnecting the power/data and fluid lines. The ground attempted to activate CDRA with no joy following the crew’s activity. Error messages were received during an Active Built-in-Test (ABIT). Ground teams are investigating the ABIT error messages. Until the N3 CDRA is recovered, Vozdukh, Lab CDRA and Amine Swing Bed will continue to remove CO2. Dragon Cargo Transfer Operations: The crew continued loading return cargo and trash into the Dragon vehicle. As of tonight’s crew report we are approximately 70% complete with SpX-6 cargo operations. Today’s Planned Activities All activities were completed unless otherwise noted. TWIN – Sample Collection and Prep for Stowage HRF – Sample Collection and Prep for Stowage HRF Urine Sample Collection HRF – Sample MELFI Insertion Closing USOS Window Shutters HRF – Sample MELFI Insertion HRF – Equipment stowage after sample collection Chibis-M Repairs. / r/g 8760 Urine Transfer from EDV-U to EDV-M / r/g 8763 В3 Fan Screen Cleaning in DC1 r/g 8393 Air Heater Fan (БВН) Screen Cleaning ISS Crew and ГОГУ r/g 8736 WRS – Recycle Tank Fill Cleaning FGB Gas-Liquid Heat Exchanger (ГЖТ) Detachable Screens 1, 2, 3 Rodent Research (RR) – Hardware Gathering for the Experiment Ops Cleaning FGB ЦВ1 Circulation Fan Screens Flushing water conditioning unit water purification columns r/g 8765 Rodent Research (RR) – Dissection procedure review Life On The Station Photo and Video / r/g 8544 Crew removes desiccant from Glacier-1 and replaces with fresh desiccant, then repeats for Glacier-2 TPLXA – Hardware Retrieval Health Maintenance System (HMS) – Food Frequency Questionnaire MSG – Activation of MSG glove box PAO Event Video Footage of Greetings / r/g 8761 WRS – Recycle Tank Fill Rodent Research (RR) – Camcorder Node2 Setup Rodent Research (RR) – Experiment Setup IMS and Stowage Conference Life On The Station Photo and Video / r/g 8544 Cleaning ГЖТ4 (Gas-Liquid Heat Exchanger) ВТ-7 fan screen Rodent Research (RR) – Dissection procedure review Health Maintenance System (HMS) – Medical Kit Stowage TPLXA – Removal from Incubator Collect SM and FGB Air Samples Using АК-1М Sampler r/g 8759 BAR Experiment Ops / r/g 8756 Dragon Transfer Ops TPLXA – Taking pictures of EC HM Interface TPLXA – AAS Removal TPLXA – Equipment Stowage Dragon Cargo Operations Conference MSPR Components Deactivation IMS Delta File Prep Completed Task List Items None Ground Activities All activities were complete unless otherwise noted. 2B3 Battery Reconditioning [In Work] Three-Day Look Ahead: Saturday, 05/09: Crew off duty, housekeeping, Twin Studies saliva collection Sunday, 05/10: Crew off duty, Space Aging, Bone Densitometer startup/calibration Monday, 05/11: Rodents Research QUICK ISS Status – Environmental Control Group: Component Status Elektron On Vozdukh Manual [СКВ] 1 – SM Air Conditioner System (“SKV1”) On [СКВ] 2 – SM Air Conditioner System (“SKV2”) Off Carbon Dioxide Removal Assembly (CDRA) Lab Operate Carbon Dioxide Removal Assembly (CDRA) Node 3 Standby Major Constituent Analyzer (MCA) Lab Shutdown Major Constituent Analyzer (MCA) Node 3 Shutdown Oxygen Generation Assembly (OGA) Process Urine Processing Assembly (UPA) Standby Trace Contaminant Control System (TCCS) Lab Off Trace Contaminant Control System (TCCS) Node 3 Full Up
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