By low-switching frequency of power devices, as well as synchronization between control
strategies and pulse-width modulation (PWM) pulse update, the control and calculation …

Remeasurement of the half-life of 79 Se has been carried out with projectile x-ray detection
(PXD) in accelerator mass spectrometry. We made two major improvements over our earlier …

With increasingly prominent role of rail transit in the entire urban transport system, an
auxiliary inverter is used increasingly. The complicated and fluctuating load condition of the …

Inter-City Hybrid electric multiple unit (EMU) is very good choice for the cross line
transportation between electrified and non-electrified railways. This paper proposes an on …

The traction motors in electric multiple unit (EMU) trains are powered by AC-DC-AC
converters, and the DC link voltage is generated by single phase PWM converters, with a …

Objective To study the incidence of dementia and its risk factors among the elderly living in
the community of Beijing. Methods A sample of 2788 elderly residents from Beijing were …

This paper presents a novel efficient simulation system of marine propeller load
characteristics for electric propulsion motor examination. The simulation system is realized …

Introduction: Celosia argentea (Amaranthaceae; CA), is applied for the management of
several conditions including, wounds, haemorrhagic conditions, and gynaecological …

Methods A random sample including 2788 elderly residents was studied. Dementia was
diagnosed under the two-phase procedure in 1997. In phase 1, questionnaire was …

OBJECTIVE: In order to explore the risk factors of geriatric depression, a longitudinal follow-
up study was conducted on elderly population living in the community so as to provide …