Flight Day 120 (FD120) Human Research Program (HRP) Collections: The 49S subject performed a fasting blood draw and urine collections. Both samples were stowed in Minus Eighty Degree Celsius Laboratory Freezer for ISS (MELFI) for freezing and storage until their return and analysis. The Biochemical Profile experiment tests blood and urine samples obtained from astronauts before, during, and after spaceflight. Specific proteins and chemicals in the samples are used as biomarkers, or indicators of health. Post-flight analysis yields a database of samples and test results which scientists can use to study the effects of spaceflight on the body. Repository is a storage bank used to maintain biological specimens over extended periods of time and under well-controlled conditions. This repository supports scientific discovery that contributes to our fundamental knowledge in the area of human physiological changes and adaptation to a microgravity environment and provides unique opportunities to study longitudinal changes in human physiology spanning many missions.

Electrostatic Levitation Furnace (ELF) Sample Holder Exchange: The crew performed the second part of the ELF Sample Exchange, installing the Sample Holder and Cartridge into the ELF Work Volume. The ELF is an experimental facility designed to levitate/melt/solidify materials by containerless processing techniques using the Electrostatic Levitation method. With this facility, thermophysical properties of high temperature melts can be measured, and solidification from deeply undercooled melts can be achieved.

Multi-Omics Mouse Preparations: In preparation for the JAXA Rodent Research experiment hardware launching on SpaceX-11, the crew set up the CO2 Valve Unit and performed a checkout.

Potable Water Dispenser (PWD) Relocate Postponed: The PWD was scheduled to be relocated today but the activity was postponed. The crew spent time yesterday and today looking for an adapter needed for the activity but were unable to locate it. Ground teams are discussing work arounds to allow the relocation to occur without using the adapter.

Today’s Planned Activities

All activities were completed unless otherwise noted.

URAGAN. Observation and photography

EKON-M. Observations and photography

Lighting Effects Sleep Log Entry

HRF Generic Urine Collection

HRF Generic Saliva Collection

HRF Generic Frozen Blood Collection

HRF Generic Sample MELFI Insertion Operations

HRF Generic Refrigerated Centrifuge Spin

NEUROIMMUNITET. Saliva sample collection

Regenerative Environmental Control and Life Support System (ECLSS) Recycle Tank Drain

Health Maintenance System (HMS) Stow

Electrostatic Levitation Furnace (ELF) Experiment Sample Holder Install

Regenerative Environmental Control and Life Support System (ECLSS) Recycle Tank Drain Part 2

LBNP Training

In Flight Maintenance (IFM) Waste and Hygiene Compartment (WHC) Full Fill

Electrostatic Levitation Furnace(ELF) Sample Removal

Acoustic Dosimeter Setup Day 3

Soyuz 732 Stowage Ops for Return.

Electrostatic Levitation Furnace (ELF) Sample Cartridge 2 Install

Electrostatic Levitation Furnace (ELF) Slit Cover stow

Regenerative Environmental Control and Life Support System (RGN) Wastewater Storage Tank Assembly (WSTA) Fill

On-orbit Hearing Assessment using EARQ

IDENTIFICATION. Copy ИМУ-Ц micro-accelerometer data to laptop

HRF Generic Sample MELFI Retrieval Insertion Operations

JEM Common Gas Support Equipment (CGSE) Gas Supply Start

Pre-Multi-Omics Mouse Item Gathering

Recharging Soyuz 733 Samsung PC Battery (if charge level is below 80%)

CO2 Vlv Unit Setup

IDENTIFIKATSIYA. Copy ИМУ-Ц Micro-Accelerometer Data to HDD for return

Combustion Integrated Rack (CIR) Alignment Guide Installation

CO2 Vlv Unit Checkout

Multi-purpose Small Payload Rack (MSPR) /Group Combustion Module (GCM) Component Deactivation

Regenerative Environmental Control and Life Support System (RGN) Wastewater Storage Tank Assembly (WSTA) Fill

Recharging Soyuz 732 Samsung PC Battery (if charge level is below 80%)

JEM Common Gas Support Equipment Gas Supply Stop

Hardware prepack for return and disposal on Soyuz 732

Glove Box Panel Closeout

Manufacturing Device Print Removal, Clean and Stow

Network Monitoring System (NMS) Laptop Battery Swap

VEG-03 Wick Open

Regenerative Environmental Control and Life Support System (RGN) Wastewater Storage Tank Assembly (WSTA) Fill

Separation of ЕДВ using Separation Unit [УС]

Soyuz 732 Transfer Ops

Galley Potable Water Dispenser (PWD) Installation [Aborted]

Space Headaches – Weekly Questionnaire

CALCIUM. Bioekololgiya Cases: Photography, Processing, and Photo Downlink, Pre-pack for Return

Regenerative Environmental Control and Life Support System (ECLSS) Recycle Tank Fill Part 3

48S US Prepack

Trash Staging Cleanout

HRF Generic Sample MELFI Insertion Operations

INTERACTION-2. Experiment Ops

OA7 Trash Pregather

Galley Potable Water Dispenser (PWD) Installation Part 2

Terminate Soyuz 733 Samsung PC Battery Recharge (if necessary)

INTERACTION-2. Experiment Ops

Preventive maintenance of MRM1 АСП Hatch Sealing Mechanism and Soyuz 732 hatch

Regenerative Environmental Control and Life Support System (RGN) Wastewater Storage Tank Assembly (WSTA) Fill

HRF Generic Sample MELFI Retrieval Insertion Operations

Completed Task List Items

Galley Rack Power Source Swap (From aborted Galley Potable Water Dispenser (PWD) Installation Activity)

Portable Water Dispenser – TOCA (Total Organic Carbon Analyzer) Water Sample Collection & Analysis

Portable Water Dispenser – Environmental Health System (EHS) Coliform Water Detection

JLP Cleanup and Reconfiguration

Ground Activities

All activities were completed unless otherwise noted.

Galley Rack Power Source Swap Support – Safing and Power/De-power Assistance

Three-Day Look Ahead:

Friday, 04/07: Crew off duty

Saturday, 04/08: Crew off duty, housekeeping

Sunday, 04/09: 49S Crew Emergency Roles/Responsibilities review, Change of Command

QUICK ISS Status – Environmental Control Group: