118 research outputs found
Secular trend of the leading causes of death in China from 2003 to 2013
Background: To analyze the epidemiological characteristics and secular trends of the leading causes of death in China.Methods: Data on the leading causes of death was collected from the Statistical Yearbook of China. Data for 11 years, from 2003 to 2013, was analyzed by regression analysis and chi-square test.Results: The top 3 causes of death from 2009 to 2013 were cancer, cerebrovascular disease, and cardiopathy, with the role of cardiopathy increasing over time (P<0.01). The proportion of deaths related to cardio-cerebrovascular diseases in urban and rural areas increased to 41.9% and 44.8%, respectively, in 2013, and was significantly higher than that for cancer, 25.5% and 22.4% (both P<0.01). Injury and poisoning in urban or rural areas represented the fifth leading cause of death. In 2006, endocrine, nutritional, and metabolic diseases were the sixth main cause of death, with 3.3% in urban areas. The role of genito-urinary,respiratory, and digestive system diseases in urban areas and genito-urinary system diseases in rural areas decreased during this period (all P<0.05).Conclusion: Cancer, cerebrovascular disease, and cardiopathy accounted for more than 67% of all deaths from 2007 to 2013 in China, and significantly increased in proportion from 2003 to 2013.Keywords: Causes of death; China; cancer; cardiovascular diseas
Real-time polymerase chain reaction for detection of low-intensity <em>Schistosoma japonicum</em> infections in China
Unusual double-peak specific heat and spin freezing in a spin-2 triangular lattice antiferromagnet FeAlSe
We report the properties of a triangular lattice iron-chalcogenide
antiferromagnet FeAlSe. The spin susceptibility reveals a
significant antiferromagnetic interaction with a Curie-Weiss temperature
{\Theta} ~ -200K and a spin-2 local moment. Despite a large spin and a
large |{\Theta}|, the low-temperature behaviors are incompatible with
conventional classical magnets. No long-range order is detected down to 0.4K.
Similar to the well-known spin-1 magnet NiGaS, the specific heat of
FeAlSe exhibits an unusual double-peak structure and a T
power law at low temperatures, which are attributed to the underlying
quadrupolar spin correlations and the Halperin-Saslow modes, respectively. The
spin freezing occurs at ~ 14K, below which the relaxation dynamics is probed by
the ac susceptibility. Our results are consistent with the early theory for the
spin-1 system with Heisenberg and biquadratic spin interactions. We argue that
the early proposal of the quadrupolar correlation and gauge glass dynamics may
be well extended to FeAlSe. Our results provide useful insights
about the magnetic properties of frustrated quantum magnets with high spins.Comment: 7 pages, 4 figure
Secular trend of the leading causes of death in China from 2003 to 2013.
Background: To analyze the epidemiological characteristics and secular
trends of the leading causes of death in China. Methods: Data on the
leading causes of death was collected from the Statistical Yearbook of
China. Data for 11 years, from 2003 to 2013, was analyzed by regression
analysis and chi-square test. Results: The top 3 causes of death from
2009 to 2013 were cancer, cerebrovascular disease, and cardiopathy,
with the role of cardiopathy increasing over time (P<0.01). The
proportion of deaths related to cardio-cerebrovascular diseases in
urban and rural areas increased to 41.9% and 44.8%, respectively, in
2013, and was significantly higher than that for cancer, 25.5% and
22.4% (both P<0.01). Injury and poisoning in urban or rural areas
represented the fifth leading cause of death. In 2006, endocrine,
nutritional, and metabolic diseases were the sixth main cause of death,
with 3.3% in urban areas. The role of genito-urinary, respiratory, and
digestive system diseases in urban areas and genito-urinary system
diseases in rural areas decreased during this period (all P<0.05).
Conclusion: Cancer, cerebrovascular disease, and cardiopathy accounted
for more than 67% of all deaths from 2007 to 2013 in China, and
significantly increased in proportion from 2003 to 2013
Author Correction: Single-atom Cu anchored catalysts for photocatalytic renewable H2 production with a quantum efficiency of 56%
Correction to: Nature Communications https://doi.org/10.1038/s41467-021-27698-3, published online 10 January 2022.In Supplementary Fig. 28b in the Supplementary PDF for this article, the figure panel incorrectly read ‘345 mW/cm2’ but should have been ‘34.5 mW/cm2’.In the caption of Supplementary Fig. 20 in the Supplementary PDF for this article, the term ‘isotropic analysis’ should have read ‘isotopic analysis’.In the caption of Supplementary Fig. 21 in the Supplementary PDF for this article, the term ‘isotropic analysis’ should have read ‘isotopic analysis’.In the caption of Supplementary Fig. 28b in the Supplementary PDF for this article, the term ‘isotropic test’ should have read ‘isotopic test’
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