42 Soyuz (42S) Relocation: 42S will be relocated from Mini Research Module (MRM) 2 Zenith to Service Module Aft tomorrow with the undock command scheduled for 2:11 am CDT. To support the relocation timeline the 42S crew sleep shifted 5.5 hours earlier today (11:00 am CDT, 16:00 GMT). The relocation is in preparation for 44S scheduled docking to MRM 2 Zenith on September 4. 42S return to Earth is currently planned for September 11. Human Research Program (HRP) Operations: Lindgren and Yui continued with their Flight Day 30 (FD30) Ocular Health activities performing their Optical Coherence Tomography (OCT), each acting as the Crew Medical Officer (CMO) for the other. They also performed fundoscopy, again with Yui acting as CMO for Lindgren, and Lindgren as CMO for Yui. OCT is used to measure retinal thickness, volume, and retinal nerve fiber layer, and the fundoscope is used to obtain images of the retinal surface. The Ocular Health protocol calls for a systematic gathering of physiological data to characterize the risk of microgravity-induced visual impairment/intracranial pressure in ISS crewmembers. Researchers believe that the measurement of visual, vascular and central nervous system changes over the course of this experiment and during the subsequent post-flight recovery will assist in the development of countermeasures, clinical monitoring strategies, and clinical practice guidelines. Kelly completed his FD150 Sprint ultrasound. He activated the Ultrasound machine and donned the calf and thigh reference guides. He then performed thigh and calf scans with guidance from the Sprint ground team. Ultrasound scans are used to evaluate spaceflight-induced changes in the muscle volume. The Sprint investigation evaluates the use of high intensity, low volume exercise training to minimize loss of muscle, bone, and cardiovascular function in ISS crewmembers during long-duration missions. Upon completion of this study, investigators expect to provide an integrated resistance and aerobic exercise training protocol capable of maintaining muscle, bone and cardiovascular health while reducing total exercise time over the course of a long-duration space flight. This will provide valuable information in support of investigators long term goal of protecting human fitness for longer space exploration missions. Kelly and Kornienko performed their Reaction Self-Tests today. This week-long session is in advance of the sleep shift required for the 42 Soyuz relocation tonight. Reaction Self-Test aids crewmembers to objectively identify when their performance capability is degraded by various fatigue-related conditions that can occur as a result of ISS operations and time in space (e.g., acute and chronic sleep restriction, slam shifts, extravehicular activity (EVA), and residual sedation from sleep medications). Kelly and Kornienko are performing a week of sleep logging. The Sleep ISS-12 experiment monitors ambient light exposure and crew member activity, and collects subjective evaluations of sleep and alertness, to examine the effects of space flight and ambient light exposure on sleep during a year-long mission on the International Space Station (ISS). NanoRacks Multi-Gas Monitor (MGM): Lindgren stowed the MGM deployed in the Node 1 on NanoRacks Platform 2 to recharge the battery and transfer data. The Multi-Gas Monitor is the first laser sensor to continuously measure four gases that are key for crewmembers health aboard the ISS. The multiple low-power, tunable lasers train an infrared laser beam on a cabin air sample, and sensors are tuned to specific wavelengths of light to detect oxygen, carbon dioxide, ammonia, and humidity. The instrument fits in a device the size of a shoebox and detects the presence of gases in less than one second. HTV Cargo Transfer Status: Kelly, Lindgren and Yui completed 5.5 hours of HTV-5 Cargo transfer operations today. A total of 32 hours remain to complete HTV-5 cargo operations Todays Planned Activities All activities were completed unless otherwise noted. Biochemical Urinalysis Self-exam for response time. Response time test (morning) Weekly Crew/GOGU Conference R/G 9716 PRT – laptop closeout ops Return of acoustic dosimeters to stowage location WHC – servicing Return of URISYS hardware to stowage location USND2 – hardware activation OTKLIK. Hardware monitoring / Radiogram 9734 Optical coherence tomography (OCT) – hardware prep SPRINT – hardware install and set-up FROST – cold pack install IMS Tag-up (S-band) Soyuz 716 up and down cargo prep / Radiograms 9646nu, 9711 CARDIOVECTOR. Experiment ops. Radiogram 9737 WHC – servicing OCT Vision Test (Subject) Optical coherence tomography (OCT) – eye scan (assist) MRM1 air vent screen cleaning (Group B). Cleaning behind Panels 405, 406 Radiogram 8393 MOTOCARD. Experiment ops. Radiogram 9735 Comm test and session from Soyuz 716 via Russian ground sites(VHF2) Optical coherence tomography (OCT) – eye scan (assist) OCT Vision Test (Subject) Soyuz 716 up and down cargo prep / Radiograms 9646nu, 9711 Replacement of Dust Filter 1, 2, MRM1 Gas-Liquid Heat Exchanger Cleaning Optical coherence tomography (OCT) – hardware stow USND2 – hardware power-down HTV cargo transfer ops - tank R&R and hose in  (- No. 1409127 (00065906R) Soyuz 716 Kentavr g-suit sizing JRNL – log entry HTV cargo transfer ops NANO – hardware stow HTV – transfer tag-up GLACIER5 – old pack swap-out HAM session from Columbus Portable breathing apparatus (PBA) and portable fire extinguisher (PFE) inspection Self-exam for response time. Response time test (evening) Eye fundoscopy – hardware setup Fundoscope – vision test Eye fundoscopy – hardware stow Completed Task List Items None Ground Activities All activities were completed unless otherwise noted. SPRINT Ultrasound support HMS OCT/Fundoscope support OPALS antenna configuration Three-Day Look Ahead: Friday, 08/28: 42S relocation from MRM2 Zenith to SM Aft Saturday, 08/29: Crew off duty Sunday, 08/30: Crew off duty QUICK ISS Status Environmental Control Group: Component Status Elektron On Vozdukh Manual  1 SM Air Conditioner System (SKV1) Off  2 SM Air Conditioner System (SKV2) On Carbon Dioxide Removal Assembly (CDRA) Lab Standby Carbon Dioxide Removal Assembly (CDRA) Node 3 Operate Major Constituent Analyzer (MCA) Lab Shutdown Major Constituent Analyzer (MCA) Node 3 Operate Oxygen Generation Assembly (OGA) Standby Urine Processing Assembly (UPA) Standby Trace Contaminant Control System (TCCS) Lab Off Trace Contaminant Control System (TCCS) Node 3 […] Read full story.