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Articles by L Jiao
Total Records ( 3 ) for L Jiao
  X Huang , L Jiao and W. Lu
 

Weak equivalences are important behavioral equivalences in the course of specifying and analyzing reactive systems using process algebraic languages. In this paper, we propose a series of weak equivalences named weak parametric readiness equivalences, which take two previously known behavioral equivalences, i.e. the weak readiness equivalence and the weak possible future equivalence, as their special cases. More importantly, based on the idea of structural operational semantics, a series of rule formats are presented to guarantee congruence for these weak parametric readiness equivalences, i.e. to show that the proposed rule formats can guarantee the congruence of their corresponding weak parametric readiness equivalences. This series of rule formats reflects the differences in the weak parametric readiness equivalences. We conclude that when the weak parametric readiness equivalences become coarser, their corresponding rule formats turn tighter.

  A. C. M Thiebaut , L Jiao , D. T Silverman , A. J Cross , F. E Thompson , A. F Subar , A. R Hollenbeck , A Schatzkin and R. Z. Stolzenberg Solomon
  Background

Previous research relating dietary fat, a modifiable risk factor, to pancreatic cancer has been inconclusive.

Methods

We prospectively analyzed the association between intakes of fat, fat subtypes, and fat food sources and exocrine pancreatic cancer in the National Institutes of Health–AARP Diet and Health Study, a US cohort of 308 736 men and 216 737 women who completed a 124-item food frequency questionnaire in 1995–1996. Hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated using Cox proportional hazards regression models, with adjustment for energy intake, smoking history, body mass index, and diabetes. Statistical tests were two-sided.

Results

Over an average follow-up of 6.3 years, 865 men and 472 women were diagnosed with exocrine pancreatic cancer (45.0 and 34.5 cases per 100 000 person-years, respectively). After multivariable adjustment and combination of data for men and women, pancreatic cancer risk was directly related to the intakes of total fat (highest vs lowest quintile, 46.8 vs 33.2 cases per 100 000 person-years, HR = 1.23, 95% CI = 1.03 to 1.46; Ptrend = .03), saturated fat (51.5 vs 33.1 cases per 100 000 person-years, HR = 1.36, 95% CI = 1.14 to 1.62; Ptrend < .001), and monounsaturated fat (46.2 vs 32.9 cases per 100 000 person-years, HR = 1.22, 95% CI = 1.02 to 1.46; Ptrend = .05) but not polyunsaturated fat. The associations were strongest for saturated fat from animal food sources (52.0 vs 32.2 cases per 100 000 person-years, HR = 1.43, 95% CI = 1.20 to 1.70; Ptrend < .001); specifically, intakes from red meat and dairy products were both statistically significantly associated with increased pancreatic cancer risk (HR = 1.27 and 1.19, respectively).

Conclusion

In this large prospective cohort with a wide range of intakes, dietary fat of animal origin was associated with increased pancreatic cancer risk.

  Y Ding , L Jiao , W Zhang , L Zhou , X Zhang and L. Zhang
 

Sucrose is a convenient, common, tissue-equivalent material suitable for electron paramagnetic resonance (EPR) dosimetry of ionising radiation. A number of publications have reported on the dosimetric properties of sucrose and their use in radiation accident dose reconstruction. However, previous studies did not include specially the description of measurement methods of sucrose by EPR. The aim of this work is to introduce particularly the EPR measurement methods of sucrose. In this regard, practical considerations of sample size, microwave power, modulation amplitude, EPR spectrum and signal stability are discussed.

 
 
 
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