نتایج جستجو برای: two stages gas gun

تعداد نتایج: 2771652  

Journal: Journal of Herbal Drugs 2013
Ahmad Majd Gita Amini, Saeed Irian Sedigheh Mehrabian

Background & Aim: Strawberry (Fragaria vesca L.) is a plant belonging to the Rosaceae family with medicinal properties, including antioxidant activity. The present study aimed at investigating the antioxidant properties of strawberry. Experimental method: To examine the antioxidant effect, fruit extracts at two phonological stages of growth (ripe and unripe strawberry) were prepared. ...

2007
Thomas J. Ahrens

Temperatures in the high pressure shock state have been determined by measurement of optical radiation from pure samples of forsteritc (Mg2 SiOn), a-quartz, and fused silica. Shock waves of known amplitude were produced by tantalum flyer impact using a two-stage light gas gun. Shock pressures in the ranges 150-175 GPa and 70-115 GPa for Mg: SiOn and SiO2 respectively were achieved, and temperat...

2013
Heather D. Flowe Lorraine Hope Anne P. Hillstrom

BACKGROUND A person is less likely to be accurately remembered if they appear in a visual scene with a gun, a result that has been termed the weapon focus effect (WFE). Explanations of the WFE argue that weapons engage attention because they are unusual and/or threatening, which causes encoding deficits for the other items in the visual scene. Previous WFE research has always embedded the weapo...

Journal: :The Review of scientific instruments 2014
X H Chen X L Zeng D Fan Q C Liu B X Bie X M Zhou S N Luo

We present a phase retrieval method (PRM) for analyzing single-phase displacement interferometry measurements on rapidly changing velocity histories, including photon Doppler velocimetry (PDV). PRM identifies the peaks and valleys as well as zero-crossing points in a PDV time series, performs normalization and extracts point-by-point phase and thus velocity information. PRM does not require a w...

2013
Byung I. Kim Luke Smith Thanh Tran Steven Rossland Erik Parkinson

Related Articles Non-invasive timing of gas gun-launched projectiles using external surface-mounted optical fiber-Bragg grating strain gauges Rev. Sci. Instrum. 84, 035002 (2013) Variable-temperature device for precision Casimir-force-gradient measurement Rev. Sci. Instrum. 84, 025110 (2013) Casimir probe based upon metallized high Q SiN nanomembrane resonator Rev. Sci. Instrum. 84, 015115 (201...

Journal: :Physical review letters 2003
Marina Bastea

Electrical conductivities are reported for degenerate fluid nitrogen at pressures up to 180 GPa (1.8 Mbar) and temperatures of approximately 7000 K. These extreme quasi-isentropic conditions were achieved with multiple-shock compression generated with a two-stage light-gas gun. Nitrogen undergoes a nonmetal-metal transition at 120 GPa, probably in the monatomic state. These N data and previous ...

2016
Woon-Mok Sohn Byoung-Kuk Na Shin-Hyeong Cho Won-Ja Lee Mi-Yeoun Park Soon-Won Lee Seung-Bong Choi Beom-Nyung Huh Won-Seok Seok

To know the infection status of zoonotic trematode metacercariae in brackish water fish, we surveyed mullets collected from 18 coastal areas in the Republic of Korea. The metacercariae of Pygidiopsis summa were detected in 236 (68.2%) out of 346 mullets examined. They were found in mullets from 15 areas except for those from Boseong-gun (Jeollanam-do), Pohang-si, and Uljin-gun (Gyeongsangbuk-do...

Journal: :The New England journal of medicine 2015
Rebecca S Gruchalla Hugh A Sampson

n engl j med 372;9 nejm.org february 26, 2015 875 dent Barack Obama’s promise in his 2013 State of the Union address to enact gun-control legislation was stymied, and the composition of the current Congress augurs ill for such federal legislation. Surveys show that a strong majority of Americans want better gun control, and the medical community is solidly behind them. So what stands in the way...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Pavel Serov Sunil Vadakkepuliyambatta Jürgen Mienert Henry Patton Alexey Portnov Anna Silyakova Giuliana Panieri Michael L Carroll JoLynn Carroll Karin Andreassen Alun Hubbard

Seafloor methane release due to the thermal dissociation of gas hydrates is pervasive across the continental margins of the Arctic Ocean. Furthermore, there is increasing awareness that shallow hydrate-related methane seeps have appeared due to enhanced warming of Arctic Ocean bottom water during the last century. Although it has been argued that a gas hydrate gun could trigger abrupt climate c...

Journal: :Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention 2000
A L Kellermann D S Fuqua-Whitley T R Sampson W Lindenmann

OBJECTIVES (1) Determine the frequency of gun ownership, acquisition, and transfer; (2) assess gun storage practices; and (3) compare the views of firearm owning and non-owning adults regarding the protective value of keeping a gun in the home. SETTING AND METHODS Over three different time periods (1995, 1996, and 1999) stratified, random digit telephone surveys were conducted in a five count...

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