Results 91 to 100 of about 255,561 (311)

SPG4 and Dementia: Expanding the Clinical Spectrum

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Hereditary spastic paraplegia (HSP) is a group of disorders characterized by progressive spasticity and lower limb weakness, with mutations in SPG4/SPAST being the most common cause. Detailed studies and clinical and molecular comparisons across different populations are missing.
Emanuele Panza   +19 more
wiley   +1 more source

Wind-Tunnel Survey of an Oscillating Flow Field for Application to Model Helicopter Rotor Testing [PDF]

open access: yes
A survey was conducted of the flow field produced by the Airstream Oscillator System (AOS) in the Langley Transonic Dynamics Tunnel (TDT). The magnitude of a simulated gust field was measured at 15 locations in the plane of a typical model helicopter ...
Hamouda, M-Nabil H.   +2 more
core   +1 more source

Update on the Ares V to Support Heavy Lift for U.S. Space Exploration Policy [PDF]

open access: yes, 2008
When NASA's Ares V cargo launch vehicle begins flying late next decade, its capabilities will significantly exceed the 1960s-era Saturn V. It will send more crew and cargo to more places on the lunar surface than Apollo and provide ongoing support to a ...
Creech, Steve, Sumrall, John P.
core   +1 more source

The Role of Calcitonin Gene‐Related Peptide in High‐Altitude Headache: A Prospective Field Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective High‐altitude headache (HAH) is a common neurological condition associated with rapid ascent to high altitude. The pathophysiological mechanisms underlying HAH remain incompletely understood. Calcitonin gene‐related peptide (CGRP), a neuropeptide implicated in migraine pathophysiology, may play a key role in the pathophysiology of ...
Roman Schniepp   +4 more
wiley   +1 more source

The Impact of Extreme Climate on Agricultural Production Resilience in China: Evidence from a Dynamic Panel Threshold Model

open access: yesAgriculture
Against the backdrop of accelerating climate change, extreme weather events have increasingly caused yield losses in agricultural crops. Meanwhile, they undermine the stability of production systems, posing an increasingly severe threat to agriculture ...
Huanpeng Liu, Zhe Chen, Lin Zhuang
doaj   +1 more source

Analyses of the TIARA 43 MeV Proton Benchmark Shielding Experiments Using the ARES Transport Code

open access: yesScience and Technology of Nuclear Installations, 2017
ARES is a multidimensional parallel discrete ordinates particle transport code with arbitrary order anisotropic scattering. It can be applied to a wide variety of radiation shielding calculations and reactor physics analysis.
Bin Zhang, Liang Zhang, Yixue Chen
doaj   +1 more source

NASA Ares I Crew Launch Vehicle Upper Stage Overview [PDF]

open access: yes, 2008
By incorporating rigorous engineering practices, innovative manufacturing processes and test techniques, a unique multi-center government/contractor partnership, and a clean-sheet design developed around the primary requirements for the International ...
McArthur, J. Craig
core   +1 more source

Prodromal Lewy Body Disorder Features in REM Sleep Behavior Disorder With Biomarker‐Defined Synucleinopathy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Isolated rapid eye movement sleep behavior disorder (iRBD) is a prodromal state for Lewy body disorders and exhibits biological heterogeneity that may influence clinical expression and progression. We examined clinical features in individuals with iRBD and biomarker‐defined synucleinopathy.
Daniel Weintraub   +24 more
wiley   +1 more source

Acute rejection episodes after kidney transplantation

open access: yesSaudi Journal of Kidney Diseases and Transplantation, 2009
Acute rejection episodes (AREs) are a major determinant of renal allograft survival. The incorporation of new immunosuppressive agents explains, at least partially, the improvement seen in the results of transplantation in recent years. The objectives of
Hamida Fethi   +11 more
doaj  

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