Results 91 to 100 of about 11,478,449 (349)

Hypervelocity impact study: The effect of impact angle on crater morphology [PDF]

The Space Power Institute (SPI) of Auburn University has conducted preliminary tests on the effects of impact angle on crater morphology for hypervelocity impacts. Copper target plates were set at angles of 30 deg and 60 deg from the particle flight path.
Best, Steve, Crawford, Gary, Crumpler, Mike, Hill, David, Rose, Frank E., Zee, Ralph   +5 more
core   +1 more source

Glymphatic Dysfunction Reflects Post‐Concussion Symptoms: Changes Within 1 Month and After 3 Months

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Mild traumatic brain injury (mTBI) may alter glymphatic function; however, its progression and variability remain obscure. This study examined glymphatic function following mTBI within 1 month and after 3 months post‐injury to determine whether variations in glymphatic function are associated with post‐traumatic symptom severity ...
Eunkyung Kim, Han Gil Seo, Roh‐Eul Yoo, Byung‐Mo Oh   +3 more
wiley   +1 more source

Numerical Analysis of Dual Droplet Simultaneous Oblique Impact on a Water Film

Energies
The simultaneous oblique impact of multiple droplets on a liquid film is an intricate phenomenon prevalent in diverse natural and industrial processes.
Botong Zhou, Zheyan Jin, Zhigang Yang, Lei Yu   +3 more
doaj   +1 more source

Nonlinear optimal guidance with constraints on impact time and impact angle

Automatica
This paper aims to address the nonlinear optimal guidance problem with impact-time and impact-angle constraints, which is fundamentally important for multiple pursuers to collaboratively achieve a target. Addressing such a guidance problem is equivalent to solving a nonlinear minimum-effort control problem in real time.
Wu, Fanchen, Chen, Zheng, Shao, Xueming, Wang, Kun   +3 more
openaire   +3 more sources

ALS With and Without Upper Motor Neuron Signs: A Comparative Study Supporting the Gold Coast Criteria

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The Gold Coast criteria permit diagnosis of amyotrophic lateral sclerosis (ALS) even without upper motor neuron (UMN) signs. However, whether ALS patients with UMN signs (ALSwUMN) and those without (ALSwoUMN) share similar characteristics and prognoses remains unclear.
Hee‐Jae Jung, E‐nae Cheong, Jungmin So, Heung‐Won Kang, Yangsean Choi, Eun‐Jae Lee, Hyunjin Kim, Young‐Min Lim   +7 more
wiley   +1 more source

Determination of material's tightening force with chipper knife

Аграрная наука Евро-Северо-Востока, 2016
Chippers designed for chopping wood at the sawmill waste, produce of wood chips could be used in agriculture; they used at development of lands derived from the rotation overgrown with undergrowth and bushes.
N. F. Baranov, V. S. Fufachev, I. V. Stupin   +2 more
doaj  

Adult‐Onset Subacute Sclerosing Panencephalitis Presenting With Subacute Cognitive Deficits

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT We describe the case of a 41‐year‐old man diagnosed with adult‐onset subacute sclerosing panencephalitis (SSPE). The patient presented with subacute progressive cognitive deficits and a neuropsychological profile indicating predominant frontoparietal dysfunction. MRI showed only mild parietal‐predominant cerebral atrophy.
Dennis Yeow, Nicola McKern, Vincent Oxenham, Kate Ahmad, Omar Ahmad   +4 more
wiley   +1 more source

Error analysis of penetrator impacts on bodies without atmospheres [PDF]

Penetrators are missile shaped objects designed to implant electronic instrumentation in various of surface materials with a nominal impact speed around 150 m/sec.
Davis, D. R.
core   +1 more source

Kaon and Antikaon Production in Heavy Ion Collisions at 1.5 AGeV

, 2002
At the Kaon Spectrometer KaoS at SIS, GSI the production of kaons and antikaons in heavy ion reactions at a beam energy of 1.5 AGeV has been measured for the collision systems Ni+Ni and Au+Au.
Böttcher, I., Förster, Andreas, Gross, E., KaoS, Koczon, Piotr, Kohlmeyer, B., Menzel, M., Naumann, L., Oeschler, H., Pühlhofer, F., Scheinast, W., Schwab, E., Senger, P., Shin, Y., Ströbele, Herbert, Sturm, C., Uhlig, F., Wagner, A., Walus, W.   +18 more
core   +1 more source

Optimal Impact Angle Guidance for Exoatmospheric Interception Utilizing Gravitational Effect

IEEE Transactions on Aerospace and Electronic Systems, 2019
This paper aims to develop a new optimal intercept angle guidance law for exoatmospheric interception by utilizing gravity. A finite-time optimal regulation problem is formulated by considering the instantaneous zero-effort-miss and the intercept angle ...
Shaoming He, Chang-hun Lee
semanticscholar   +1 more source