Results 21 to 30 of about 672,495 (309)

Low Frequency Anti-Interference Mechanism of Axial Stretching Fiber Laser Hydrophones

open access: yesPhotonics, 2022
For the axial stretching fiber laser hydrophone, a fiber laser is often exposed to flexural interference. A theoretical model for the flexural vibration of a fiber laser was therefore constructed in this paper to explore the low frequency anti ...
Wenzhang Song   +7 more
doaj   +1 more source

Association between illegal drugs and weapon carrying in young people in Scotland: schools' survey [PDF]

open access: yes, 2000
OBJECTIVES: To identify the type and extent of weapons being carried among young people in Scotland, and to determine the relation between use of illegal drugs and weapon carrying. DESIGN: Questionnaire school survey.
McKeganey, N., Norrie, J.
core   +2 more sources

The evolution of the type VI secretion system as a disintegration weapon

open access: yesPLoS Biology, 2020
The type VI secretion system (T6SS) is a nanomachine used by many bacteria to drive a toxin-laden needle into other bacterial cells. Although the potential to influence bacterial competition is clear, the fitness impacts of wielding a T6SS are not well ...
William P. J. Smith   +6 more
semanticscholar   +1 more source

An OFDM-Based Frequency Domain Equalization Algorithm for Underwater Acoustic Communication with a High Channel Utilization Rate

open access: yesJournal of Marine Science and Engineering, 2023
The underwater acoustic communication technique for high-speed and highly reliable information transmission in the ocean has been one of the popular research focuses facing the fast-growing information technology sector and the accelerating development ...
Chengxu Feng   +3 more
doaj   +1 more source

Reliability Analysis and Optimization Method of a Mechanical System Based on the Response Surface Method and Sensitivity Analysis Method

open access: yesActuators, 2023
Mechanical system reliability analysis constitutes a primary research focus in the field of engineering. This study aims to address the issue of complex mechanical systems with intricate mechanisms and nonlinear reliability equations that are challenging
Lei Zhao   +3 more
doaj   +1 more source

The Type VI secretion system: a versatile bacterial weapon.

open access: yesMicrobiology, 2019
The Type VI secretion system (T6SS) is a protein nanomachine that is widespread in Gram-negative bacteria and is used to translocate effector proteins directly into neighbouring cells. It represents a versatile bacterial weapon that can deliver effectors
Sarah J. Coulthurst
semanticscholar   +1 more source

Numerical Investigation of the Effect of Supersonic Air Temperature on the Mixing Characteristics of Liquid Fuel

open access: yesEnergies, 2023
The effect of supersonic air temperature on the mixing characteristics of liquid hydrocarbon fuel injected into three different supersonic airflows elevated in three steps from 373 K to 673 K was investigated numerically.
Byeong-Jo Hwang, Seongki Min
doaj   +1 more source

A study of lost military words and terms from dictionaries based on Adab-al-Harb va Al-shaja’ah (types of arrowheads and Maces) [PDF]

open access: yesنثرپژوهی ادب فارسی, 2022
Despite the writing of various dictionaries in the Persian language, there are still many Persian words that have been overlooked by lexicographers or some forms of them have not been recorded.
Hossein Aligholizadeh, Hamid Pooladi
doaj   +1 more source

Magnetic detection of underdriven USV track adaptive tracking in complex marine environment control algorithm research

open access: yesAIP Advances, 2023
In marine magnetic detection, in order to improve the accuracy of the measurement data of the field, to consider the impact of the storm interference environment, and to design a weakly driven USV tracking control system, it is necessary to drive the USV
Yi Li, Zhongle Liu, Wudi Wen
doaj   +1 more source

Music as Torture / Music as Weapon

open access: yesThe Auditory Culture Reader, 2020
One of the most startling aspects of musical culture in the post-Cold War United States is the systematic use of music as a weapon of war. First coming to mainstream attention in 1989, when US troops blared loud music in an effort to induce Panamanian ...
Suzanne G. Cusick
semanticscholar   +1 more source

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