Visual contrast sensitivity to sinusoidal gratings of five spatial frequencies was measured in 15 patients with Alzheimer's disease and in eight control subjects. Contrast sensitivity thresholds were elevated at all frequencies in 14 pat... GS Wasserman - 《Psyccritiques》 被引量: 279发表: 1985年 ...
gondii IgM, enzyme-linked immunosorbent assay (ELISA) for Leptospira IgM immunoglobulins, and buffered plate agglutination test (BPAT) and competitive ELISA for B. abortus IgG immunoglobulins. Of 394 apparently healthy livestock/farm workers sampled, 150 (38.1%) were seropositive for T. gondii IgM...
The sample frequency is the rate at which the digitizer samples the input signal for conversion to a set of discrete numeric values. From: Demystifying Mixed Signal Test Methods, 2003 About this pageAdd to MendeleySet alert Also in subject areas: Computer Science MathematicsDiscover other topics ...
This is a form is test equipment that uses a crystal oscillator to provide a calibration signal - typically with 1 MHz and 100 kHz crystals that enable the internal oscillator to be calibrated every 100 kHz.The wave meter can be used to create a signal that can check the fre...
BACKGROUND: One of the age-associated changes in immunity is the increase of autoantibodies due to dysregulation of the immune function. Anti-basement membrane zone antibodies were also reported to be found in the sera taken from normal elderly people. OBJECTIVE: The purpose of this study is to...
It is therefore common to start in the frequency domain in test phases 1 and 2 (Table 1) and then to move to the time domain for the remaining test phases. Frequency domain solutions are applicable where the wave excitation is either of simple harmonic form or of the superposition of ...
unsigned int chan, unsigned int pat1, unsigned int pat2) { struct cf_axi_dds_state *st = iio_priv(indio_dev); unsigned ctrl; unsigned int ctrl;dds_write(st, ADI_REG_CHAN_CNTRL_5(chan), ADI_TO_DDS_PATT_1(pat1) | ADI_DDS_PATT_2(pat2)); ...
(quanrc@xtbg. ac.cn) Bird fruit preferences match the frequency of fruit colours in tropical Asia Qiong Duan1, Eben Goodale2 & Rui-chang Quan1 1Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Yunnan, 666303, China, 2Key Laboratory of ...
VR Patwardhan,A Cardenas - 《Alimentary Pharmacology & Therapeutics》 被引量: 89发表: 2014年 Portal hypertensive gastropathy and gastric antral vascular ectasia Radiofrequency ablation may be an alternative therapy to argon plasma coagulation in the endoscopic treatment of GAVE, as it consists of few...
Data were presented as medians with range; the distributions of continuous variables were compared and assessed for statistical significance using the Mann–Whitney test. Differences among proportions were tested using the Χ2-test or the Fisher's test when appropriate. RESULTS From September 2002 to...