To explore the relationship between Chlamydia pneumonia (CP) infection and hypertension as well as the interaction of traditional risk factors and CP infections on hypertension in Chinese Mongolian ...population.
1430 inhabitants living in Tongliao city, Inner Mongolia were selected as research subjects, including 488 hypertensives and 942 normotensives. Enzyme-linked immunoassay technique was used to test CP IgG antibody in the blood serum and SPSS 13.0 Microsoft was used to analyze the data.
The prevalence rates of hypertension were significantly different between CP IgG positive and negative groups, However, the trend was attenuated after adjusting age, sex, drinking, smoking, body mass index (BMI) and dyslipidemia. The CP infection rate was significant different in diastolic blood pressure groups, which was significantly higher in 80-84 mm Hg than that in the lowest DBP group. The interaction of chronic CP infection and other traditional risk factors were associated with hypertension in Chinese Mongolian eth
Multi-scroll chaotic systems have great theoretical significance and engineering application value. Here, we report a chaotic system which can generate controllable multi-scroll chaotic attractors ...with multiple wings by introducing sine function into the
x
,
y
, and
z
directions. The system can generate 2D grid-scroll chaotic attractors due to the same mechanism of chaos in the
x
and
y
directions. Although the system only possesses one equilibrium point in this case, the locations of the scrolls and wings can be determined based on the potential well distribution as the system implies the Duffing equation. However, the generation of multi-scroll chaotic attractors in the
z
direction is ascribed to the presence of two types of equilibrium points in the system, namely, unstable index-1 and index-2 saddle-foci. Due to different mechanisms for the generation of multi-scroll chaotic attractors, the system cannot generate 3D grid-scroll chaotic attractors, but can generate multi-directional grid-scroll chaotic attractors with a wider coverage by using a non-autonomous approach. The time series of 2D grid-scroll chaotic attractors exhibits intermittent chaos. Then, the amplitude of the sine function in the
z
direction can be manipulated to control the intermittent chaos, making it either more stable (stable point) or more chaotic (largest Lyapunov exponent exceeding 30). Damping coefficient is introduced to control the number of scrolls and wings based on the Duffing equation. Finally, the physical feasibility of the system was verified through circuit experiments based on microcontrollers.
To explore the biological effective markers, we investigated DNA strand breaks in peripheral lymphocytes from occupational population with broad ranges of soluble chromate exposure.
We conducted a ...cross-sectional study in the chromate exposed workers employed at a chromate factory in a district of Jinan, Shandong Province. The studied population contained 114 workers from different processes of the chromate plants, in addition, 30 farmers in the countryside about one hundred kilometers away from the factory, without exposure to chromate were matched with the exposed subjects by age, gender and smoking status being identified as a control group. Personal information on age, chromate exposure, medical history (including acute infection and medicine usage), smoking habit and alcohol consumption was obtained by questionnaire. DNA strand breaks in lymphocytes were detected by single-cell gel electrophoresis assay (comet assay) and the DNA damaged degree was evaluated by the score weighted by comet type. The air co
The interaction of dye brilliant cresyl blue (BCB), which features a phenoxonium group, with hydroxypropyl-beta-cyclodextrinl and DNA in aqueous solution was studied by spectroscopic methods. The ...experimental results indicate that BCB can be included into the hydrophobic cavity of HP-beta-CD to form an inclusion, a complex with a stability constant of 1.98 x 10(3) L x mol(-1). At low DNA concentrations, BCB can be bound to DNA to form a 1:1 association complex with the binding constant of 4.3 x 10(4) mol x L(-1), and the major binding model of BCB to DNA is "electrostatic binding". However, the major binding model changes to "intercalative binding" at high DNA concentrations. In addition, the interactions of BCB-(HP-beta-CD) inclusion complex and DNA have been investigated. The results suggest that BCB displayed a high affinity for DNA and the inclusion complex decomposed when it was bound to DNA.
In the title compound, C18H24N2O6, the two pyrrolinone rings are planar and adopt anti conformations. The molecule lies on an inversion centre. The molecules are linked into a three‐dimensional ...framework structure by three independent C—H...O hydrogen bonds.
In traditional text classification approaches, the semantic meanings of the classes are described by the labeled documents. Since labeling documents is often time consuming and expensive, it is a ...promising idea that asking users to provide some keywords to depict the classes, instead of labeling any documents. However, short pieces of keywords may not contain enough information and therefore may lead to unreliable classifier. Fortunately, there are large amount of public data easily available in web directories, such as ODP, Wikipedia, etc. We are interested in exploring the enormous crowd intelligence contained in such public data to enhance text classification. In this paper, we propose a novel text classification framework called “Knowledge Supervised Learning”(KSL), which utilizes the knowledge in keywords and the crowd intelligence to learn the classifier without any labeled documents. We design a two-stage risk minimization (TSRM) approach for the KSL problem. It can optimize the expected prediction risk and build the high quality classifier. Empirical results verify our claim: our algorithm can achieve above 0.9 on Micro-F1 on average, which is much better than baselines and even comparable against SVM classifier supervised by labeled documents.
Pavement texture evaluation is important for driving both skid resistance and pavement maintenance. Limited by the requirements of automation, efficiency and data coverage requirements, most pavement ...methods focus on damaged areas and static measurement environment. However, maintenance work is practically performed on the entire pavement rather than only the damaged areas, thus a gap between theory and practice is observed. In this study, we designed an efficient texture decomposition method based on the proposed step signal extraction algorithm, which can overcome road fluctuations and accurately extract pavement texture. The Pavement Transformer is introduced for fine texture evaluation, and can better serve pavement maintenance in practice. We conducted experiments on 22,800 pieces of 3D laser scanning data. The results demonstrate that our decomposition method has improved accuracy and stability. Moreover, the classification accuracy of texture level evaluation is 95.2%, which is better than that of the Vision Transformer.
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•A 3D pavement data decomposition method with high accuracy and stability is proposed.•The step signal extraction algorithm can efficiently separate Step signal.•This paper improves the Transformer and proposes the Pavement-Transformer.•The method can evaluate the texture level with 95% accuracy, which is higher than ViT.
Mastitis in cows is caused by the inflammation of the mammary glands due to an infection by external pathogenic bacteria. Mammary gland epithelial cells, which are in direct contact with the external ...environment, are responsible for the first line of defense of the mammary gland against pathogenic bacteria, playing an essential role in immune defense. To investigate the mechanism of bovine mammary epithelial cells in the inflammatory process, we treated the cells with LPS for 12 hours and analyzed the changes in mRNA by transcriptome sequencing. The results showed that compared to the control group, the LPS treatment group had 121 up-regulated genes and 18 down-regulated genes. GO and KEGG enrichment analysis revealed that these differential genes were mainly enriched in the IL-17 signaling pathway, Legionellosis, Cytokine-cytokine receptor interaction, NF-kappa B signaling pathway, and other signaling pathways. Furthermore, the expression of GRO1 and CXCL3 mRNAs increased significantly after LPS treatment. These findings provide new insights for the treatment of mastitis in cows in the future.
We studied the effects of osmotic swelling on the components of excitation-contraction coupling in ventricular myocytes. Myocyte volume rapidly increased 30% in hyposmotic (0.6T) solution and was ...constant thereafter. Cell shortening transiently increased 31% after 4 min in 0.6T but then decreased to 68% of control after 20 min. In parallel, the L-type Ca(2+) current (I(Ca-L)) transiently increased 10% and then declined to 70% of control. Similar biphasic effects on shortening were observed under current clamp. In contrast, action potential duration was unchanged at 4 min but decreased to 72% of control after 20 min. Ca(2+) transients were measured with fura 2-AM. The emission ratio with excitation at 340 and 380 nm (f(340)/f(380)) decreased by 12% after 3 min in 0.6T, whereas shortening and I(Ca-L) increased at the same time. After 8 min, shortening, I(Ca-L), and the f(340)/f(380) ratio decreased 28, 25, and 59%, respectively. The results suggest that osmotic swelling causes biphasic changes in I(Ca-L) that contribute to its biphasic effects on contraction. In addition, swelling initially appears to reduce the Ca(2+) transient initiated by a given I(Ca-L), and later, both I(Ca-L) and the Ca(2+) transient are inhibited.
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