Results 61 to 70 of about 1,483,275 (274)

IR-UWB antenna with built-in impulse-like waveform generator for impulse radar applications

open access: yesAIP Advances
This paper presents a novel impulse-radio ultra-wideband (IR-UWB) pulsed radar antenna integrated with an impulse generator circuit, designed and investigated for IR-UWB radar imaging applications.
D. Lee
doaj   +1 more source

Impulse noise generated by starter pistols [PDF]

open access: yesInternational Journal of Audiology, 2013
This study describes signals generated by .22 and .32 caliber starter pistols in the context of noise-induced hearing loss risk for sports officials and athletes.Acoustic comparison of impulses generated from typical .22 and .32 caliber starter pistols firing blanks were made to impulses generated from comparable firearms firing both blanks and live ...
Deanna K, Meinke   +6 more
openaire   +2 more sources

Unique circulating miRNAome signatures captured with distinct molecular states in Lynch syndrome and sporadic colorectal cancer

open access: yesMolecular Oncology, EarlyView.
Circulating microRNA profiles distinguish nonmalignant Lynch syndrome from cancer‐associated Lynch syndrome, sporadic colorectal cancer, and healthy controls. Age‐stratified analysis reveals disease‐specific regulatory states, and a six‐miRNA panel shows concordant separation in an independent colorectal tissue cohort.
Ramadhani Salum Chambuso   +5 more
wiley   +1 more source

新型脉动发生机构研究及运动仿真

open access: yesJixie chuandong, 2006
Structural characteristics and kinematics feature of a new impulse generator are analyzed. The relations of theoretical outline of cam, swing angle of rocker and dimension of link are established.
杨刚   +4 more
doaj  

Grid connection method of gravity energy storage generator motor based on voltage index sensitivity analysis

open access: yesEnergy Informatics
The basic requirements for the grid connection of the generator motor of the gravity energy storage system are: the phase sequence, frequency, amplitude, and phase of the voltage at the generator end and the grid end must be consistent.
Qingshan Wang   +3 more
doaj   +1 more source

Nd-Fe-B permanent magnet generator and voltage stabilizing control technology for vehicles

open access: yesAdvances in Mechanical Engineering, 2016
In this study, the tangential magnetic field Nd-Fe-B permanent magnet generator is designed and analyzed. In the generator, the adjacent permanent steel is sequentially arranged on the radial groove by the way of same polarity-oriented manner.
Xueyi Zhang   +6 more
doaj   +1 more source

Improving the performance of LOX/kerosene upper stage rocket engines

open access: yesPropulsion and Power Research, 2017
Improved liquid rocket engine cycles were proposed and analyzed via comparison with existing staged combustion and gas-generator cycles. The key features of the proposed cycles are regenerative cooling of thrust chamber by oxygen and subsequent use of ...
IgorN. Nikischenko   +2 more
doaj   +1 more source

Acoustic Sounding of Hydraulic Fractures in a Low-Permeability Reservoir

open access: yesMathematics, 2022
Theoretical models indicate the possibility of diagnosing the presence and the conductivity of the hydraulic fractures in reservoirs of the permeability of order milli Darcy by means of an acoustic TV set, which is a cylindrical probe of the length of ...
Vladislav Sh. Shagapov   +2 more
doaj   +1 more source

Targeting the EpCAM‐AXL axis to overcome drug resistance in lung cancer

open access: yesMolecular Oncology, EarlyView.
Lung cancer cells often evade therapy by hijacking signaling pathways. We reveal that cleaved EpCAM (sEpCAM) stabilizes the oncogenic protein AXL, driving NF‐κB and STAT3‐mediated chemoresistance. This EpCAM‐AXL axis identifies a high‐risk patient subset with poor prognosis.
Alexa Guerrero‐Alba   +5 more
wiley   +1 more source

Employment of mud-pulse generator for improvement of efficiency of a wellbore producing in complex mining and geological conditions

open access: yesPetroleum Research
In this study, the employment of mud-pulse generators to improve the efficiency of wellbores under complex mining and geological conditions is examined. A systemic analysis is made of the primary theoretical basis of the study.
Bibinur Akhymbayeva
doaj   +1 more source

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