Results 71 to 80 of about 177,456 (287)

Techno‐Economic Analysis of Polylactic Acid from Corn Stover: Understanding Uncertainty and Variability via Artificial Intelligence Tools

open access: yesAdvanced Sustainable Systems, EarlyView.
This study analyses the uncertainty and variability existing in the economic performance of polylactic acid (PLA) production, via integrating techno‐economic analysis with process models and Monte Carlo simulation enabled by artificial intelligence. The results show that the minimum selling price varies from $2,107 to $3076/t PLA.
Yinqiao Wang   +5 more
wiley   +1 more source

Atmospheric constraint statistics for the Space Shuttle mission planning [PDF]

open access: yes
The procedures used to establish statistics of atmospheric constraints of interest to the Space Shuttle mission planning are presented. The statistics considered are for the frequency of occurrence, runs, and time conditional probabilities of several ...
Batts, G. W.   +2 more
core   +1 more source

Using Google Analytics Data to Expand Discovery and Use of Digital Archival Content [PDF]

open access: yes, 2013
This article presents opportunities for the use of Google Analytics, a popular and freely available web analytics tool, to inform decision making for digital archivists managing online digital archives content.
Szajewski, Michael
core   +1 more source

Navigating Vertical Transfer Online: Access to and Usefulness of Transfer Information on Community College Websites [PDF]

open access: yes, 2019
Objective: To transfer, students often must navigate complex and imperfect information about credit transfer, bureaucratic hurdles, and conflicting degree requirements.
Absher, Caitlin   +2 more
core   +1 more source

ROS Activated NETosis of Bone Marrow CD55+ Intermediate Mature Neutrophils Through HIF1α‐PADI4 Pathway to Initiate Bone Aging

open access: yesAdvanced Science, EarlyView.
In this study, we find CD55+ neutrophils show activated NETosis within bone marrow, induce BMSC senescence and osteogenesis inhibition, finally leading to bone aging initiation. Mechanistically, ROS synergizes with the CD55‐driven HIF1α‐PADI4 pathway to promote NETosis.
Yutong Guo   +6 more
wiley   +1 more source

Crater Detection and Population Statistics in Tianwen-1 Landing Area Based on Segment Anything Model (SAM)

open access: yesRemote Sensing
Crater detection is useful for research into dating a planetary surface’s age and geological mapping. The high-resolution imaging camera (HiRIC) carried by the Tianwen-1 rover provides digital image model (DIM) datasets with a resolution of 0.7 m/pixel ...
Yaqi Zhao, Hongxia Ye
doaj   +1 more source

Sensitivity analysis of helicopter IMC decelerating steep approach and landing performance to navigation system parameters [PDF]

open access: yes
Results of a study to investigate, by means of a computer simulation, the performance sensitivity of helicopter IMC DSAL operations as a function of navigation system parameters are presented.
Karmali, M. S., Phatak, A. V.
core   +1 more source

2012 Census of California Water Transit Services ,MTI Report 12-02 [PDF]

open access: yes, 2010
The U.S. Bureau of Transportation Statistics conducts a nationwide census of ferry boat operators for the U.S. Department of Transportation and the collected information is used for statistical purposes. The Caltrans Division of Local Assistance has been
Agrawal, Asha W.   +3 more
core   +1 more source

Long‐Term Elevated CO2 Improves Soil Health and Rice Yields in Paddy Fields

open access: yesAdvanced Science, EarlyView.
Combining the two longest‐running rice free‐air CO2 enrichment experiments with a global data synthesis, this study demonstrates that long‐term elevated CO2 consistently enhances soil health. In rice paddies, this improvement sustains the CO2 fertilization effect over decades.
Fan Jiang   +22 more
wiley   +1 more source

GPS vertical axis performance enhancement for helicopter precision landing approach [PDF]

open access: yes
Several areas were investigated for improving vertical accuracy for a rotorcraft using the differential Global Positioning System (GPS) during a landing approach.
Beser, Jacques, Denaro, Robert P.
core   +1 more source

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