Abstract：
:Hearing damage induced by blast exposure is a common injury in military personnel involved in most operation activities. Personal hearing protection devices such as earplugs come as a standard issue for Service members; however, it is not clear how to accurately evaluate the protection mechanisms of different hearing protection devices for blast overpressures (BOP). This paper reports a recent study on characterization of earplugs' protective function to BOP using human cadaver ears and 3D finite element (FE) model of the human ear. The cadaver ear mounted with pressure sensors near the eardrum (P1) and inside the middle ear (P2) and with an earplug inserted was exposed to BOP in the blast test chamber. P1, P2, and BOP at the ear canal entrance (P0) were simultaneously recorded. The measured P0 waveform was then applied at the ear canal entrance in the FE model and the P1 and P2 pressures were derived from the model. Both experiments and FE modeling resulted in the P1 reduction which represents the effective protection function of the earplug. Different earplugs showed variations in pressure waveforms transmitted to the eardrum, which determine the protection level of earplugs.
journal_name
Mil Medjournal_title
Military medicineauthors
Gan RZ,Leckness K,Smith K,Ji XDdoi
10.1093/milmed/usy299subject
Has Abstractpub_date
2019-03-01 00:00:00pages
251-260issue
Suppl 1eissn
0026-4075issn
1930-613Xpii
5418722journal_volume
184pub_type
杂志文章abstract：:The combined effects of injury from exposure to ionizing radiation and the potential biological warfare agent Venezuelan equine encephalitis (VEE) virus remain largely unknown. To study these effects, 4- to 5-week-old B6D2F1/J female mice were given a sublethal whole-body 7 Gy dose of 60Co gamma-photon radiation follo...
journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：2001-12-01 00:00:00
abstract：:The present review addresses the perceived stigma associated with admitting a mental health problem and seeking help for that problem in the military. Evidence regarding the public stigma associated with mental disorders is reviewed, indicating that the public generally holds negative stereotypes toward individuals wi...
journal_title：Military medicine
pub_type： 杂志文章,评审
doi：10.7205/milmed.172.2.157
更新日期：2007-02-01 00:00:00
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journal_title：Military medicine
pub_type： 临床试验,杂志文章
doi：
更新日期：2003-10-01 00:00:00
abstract：OBJECTIVE:The goal was to describe the association between post-traumatic stress disorder (PTSD) and in-service sexual harassment in a nationally representative sample of Department of Veterans Affairs PTSD disability applicants. METHOD:The study was a cross-sectional survey. RESULTS:Of 4,918 eligible veterans, 3,337...
journal_title：Military medicine
pub_type： 杂志文章
doi：10.7205/milmed.171.2.166
更新日期：2006-02-01 00:00:00
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journal_title：Military medicine
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：1989-04-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：1993-10-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：10.7205/milmed-d-11-00058
更新日期：2011-11-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章,评审
doi：
更新日期：1993-02-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：1992-06-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：10.7205/milmed-d-09-00258
更新日期：2010-07-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
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更新日期：2018-09-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
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更新日期：2019-05-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：10.7205/milmed-d-00-0909
更新日期：2009-10-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：1992-11-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：1993-01-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：1989-06-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：10.7205/milmed.173.2.146
更新日期：2008-02-01 00:00:00
abstract：:The National Academies of Sciences, Engineering, and Medicine Report on Zero Preventable Deaths highlighted the need for a military and civilian partnership to take lessons learned from the wars in Iraq and Afghanistan and incorporate them into a national learning trauma care system. One of the specific objectives in ...
journal_title：Military medicine
pub_type： 杂志文章
doi：10.1093/milmed/usy149
更新日期：2018-09-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：1991-05-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章,评审
doi：10.7205/milmed-d-10-00397
更新日期：2011-05-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：10.7205/milmed.171.11.1051
更新日期：2006-11-01 00:00:00
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journal_title：Military medicine
pub_type： 历史文章,杂志文章
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更新日期：2013-08-01 00:00:00
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pub_type： 杂志文章
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更新日期：2007-04-01 00:00:00
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pub_type： 杂志文章
doi：10.7205/milmed.172.10.1084
更新日期：2007-10-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：2002-11-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
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journal_title：Military medicine
pub_type： 杂志文章
doi：
更新日期：1994-04-01 00:00:00
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pub_type： 杂志文章
doi：10.7205/milmed.170.9.760
更新日期：2005-09-01 00:00:00
