Search Results

1 - 10 of 46 items :

  • Materials Sciences x
Clear All
Challenges of ERAU’s First Suborbital Flight Aboard Blue Origin’s New Shepard M7 for the Cell Research Experiment In Microgravity (CRExIM)

% duplicate packets in the data and a 0.3% dropped packet count as provided by the NanoRacks team to maximize the data collection for the next mission. The data observed in Figure 5 were provided by Blue Origin at 100 Hz and shows evidence of some very short shock events at CC separation ( Figure 5d), drogue chute deployment ( Figure 5g), and main chute deployment ( Figure 5h). These pulses are only a single data point wide, suggesting pulse durations <100 ms. These pulses were the result of the reaction control system when firing their thrusters right after capsule

Open access
Musculoskeletal Outcomes from Chronic High-Speed High-Impact Resistive Exercise

; greater (p<0.05) than the other treatment means for that velocity. PT, peak torque; SEM, standard error of the mean. Table 3 Knee extensor TTPT (mean ± SEM in seconds) results. Velocity (rad./second) Left leg Right leg Pre-intervention Post-intervention Pre-intervention Post-intervention 0 2.06±0.20 2.35±0.24 2.03±0.25 2.04±0.33 1.62 0.37±0.02 0.39±0.03 0.37±0.04 0.33±0.02 4.86 0.19±0.02 0.18±0.02 0.18±0.02 0.19±0.02 SEM, standard error of the mean; TTPT, time to peak torque

Open access
Impact of g-Load Shift on Temporal Expression Pattern of Apoptosis-linked Proteins in the Rat Mammary Gland

) . Effect of HG on Temporal Distribution of VDR Protein The time-trend quantitative profile of mammary gland lobular VDR in SC and HG rats is depicted in Figure 2e and f . VDR protein concentration declined by about 50% (p<0.001) in SC animals during the transition from G20 (3.6±0.24 px) to P1 (1.8±0.05 px). Subsequently, the VDR levels increased approximately fivefold (p<0.001) at P3 (10.8±0.52 px) versus P1 levels in the SC group ( Fig. 2e) . On the other hand, the HG-G20 (7.03±0.28 px) rats had about 300% (p<0.001) more VDR expressed than their P1 (2.09±0.11 px

Open access
Effect of macromolecular mass transport in microgravity protein crystallization

reaction was incubated for 1 h at room temperature with continuous stirring. The labeled tetramer was separated from free dye using a Sephadex® G-25 prepacked gel filtration column. The column was first equilibrated with PBS buffer and then loaded with a reaction mixture and eluted with PBS buffer solution. Labeling degree (DOL) of tetramer was calculated using following calculations: (1) Protein   concentration   ( M ) = [ A 280 − ( CF × A 494 ) ] × dilution   factor ε ( protein ) $$ \text

Open access
Investigation of Murine T-Cells and Cancer Cells under Thermal Stressors and 2D Slow Rotating System Effects as a Testbed for Suborbital Flights

and 3 g during ascent for about 2.5 min, between 1 g and 5 g during descent for nearly 1.5 min, and some instances with accelerations between 2 g and 3 g during parachute recovery for almost 30 sec, total time of about 5 min. Then they were either placed in 2, 5, or 15 mL tubes with and without cytokines and maintained in water baths at the following temperatures: 37℃, 30℃, 34℃, and 40℃ for various time points. Cells were also exposed to other thermal baths at 10℃ and 20℃ to account for extreme temperature variations during launch conditions as we will refer to

Open access
Experimental and statistical analysis of blast-induced ground vibrations (BIGV) prediction in Senegal’s quarry

1318 6.86 9.27 2.54 9.27 Conveyor belt 458 140 653 2.16 6.35 2.41 6.35 6 P1 (Upper exploitation level) 82 140 139 48.26 39.62 25.4 48.26 Garage station 624 140 2022 2.03 3 1.71 3 Lake Ddoudj 300 140 2020 5.33 8.76 5.9 8.76 Macodo 455 140 1318 6.1 8.54 3.43 8.54 Conveyor belt 436 50 653 5.34 13.97 3.87 13.97 7 P1 (Upper exploitation level) 150 50 139 13 13.84 8.25 13.84 Garage station 597 50 2022 4.76 7

Open access
Stress states caused in chamber of reinforced concrete grain silo by non-centric emptying on large eccentricities

, according to Eurocode 1, Part 4 [ 11 ], the recommended values amount to 0.25, 0.4 and 0.6. When applying the above relations, it is necessary to once again calculate the parameters determining the geometry of the flow channel each time the radius of the silo is changed. The Eq. (5) for determining the value of cos θ c , after appropriate mathematical transformations, can be written in a form that is independent of the radius of the silo: (7) cos θ c = 1 + ( e c r ) 2 + G 2 2 e c r

Open access
Effect of Geotextile Reinforcement on Shear Strength of Sandy Soil: Laboratory Study

.1016/0266-1144(94)90055-8. [25] LATHA M.G., MURTHY V.S., Effects of reinforcement form on the behavior of geosynthetic reinforced sand, Geotextiles and Geomembranes, 2007, 25(1), 23-32, DOI: 10.1016/j.geotexmem.2006.09.002. [26] LATHA M.G., MURTHY S.V., Investigation on sand reinforced with different geosynthetics, Geotechnical Testing Journal, 2006, 29(6), DOI: 10.1520/GTJ100439. [27] LIU J., WANG G., KAMAI T., ZHANG F., YANG J., SHI B., Static liquefaction behavior of saturated fiber-reinforced sand in undrained ring-shear tests, Geotextiles and Geomembranes

Open access
Static Load Test on Instrumented Pile – Field Data and Numerical Simulations

(2), 35–38 and 20(3) 25–29. [6] F ellenius B.H., Determining the true distributions of load in instrumented piles , ASCE International Deep Foundation Congress, Orlando, Florida, 2002. [7] F ellenius B.H., Unified design of piled foundations with emphasis on settlement , ASCE, Current Practice and Future Trends in Deep Foundations, GSP No. 125, Los Angeles, California, 2004, 253–275. [8] F ellenius B.H., K im S.R., C hung S.G., Long-term monitoring of strain in strain-gage instrumented piles , ASCE Journal of Geotechnical and Geoenvironmental

Open access
Complex analysis of uniaxial compressive tests of the Mórágy granitic rock formation (Hungary)

.05 0.28 184.59 394.9 BK1-3_U-03 0.19 69.164 0.065 71.75 0.14 132.66 0.22 133.62 517.6 BK1-3_U-04 0.18 71.860 0.045 47.93 0.113 112.28 0.18 153.60 467.8 BK1-3_U-08 0.23 70.137 0.059 80.36 0.147 142.79 0.22 172.55 406.5 BK1-3_U-12 0.25 57.425 0.066 67.99 0.13 134.11 0.27 135.14 424.9 BK2-1_U-03 0.21 74.228 0.057 74.61 0.09 131.78 0.19 146.65 506.2 BK2-3_U-07 0.28 77.332 0.036 59.84 0.068 119.12 0.19 143.71 538.1 BK2-3_U-15 0

Open access