The Spectrum of Low-pTJ/ψ in Heavy-Ion Collisions in a Statistical Two-Body Fractal Model.

We establish a statistical two-body fractal (STF) model to study the spectrum of J/ψ. J/ψ serves as a reliable probe in heavy-ion collisions. The distribution of J/ψ in hadron gas is influenced by flow, quantum and strong interaction effects. Previous models have predominantly focused on one or two of these effects while neglecting the others, resulting in the inclusion of unconsidered effects in the fitted parameters. Here, we study the issue from a new point of view by analyzing the fact that all three effects induce a self-similarity structure, involving a J/ψ-π two-meson state and a J/ψ, π two-quark state, respectively. We introduce modification factor qTBS and q2 into the probability and entropy of charmonium. qTBS denotes the modification of self-similarity on J/ψ, q2 denotes that of self-similarity and strong interaction between c and c¯ on quarks. By solving the probability and entropy equations, we derive the values of qTBS and q2 at various collision energies and centralities. Substituting the value of qTBS into distribution function, we successfully obtain the transverse momentum spectrum of low-pT J/ψ, which demonstrates good agreement with experimental data. The STF model can be employed to investigate other mesons and resonance states.

A review on the physiological and pathophysiological role of endothelial glycocalyx.

The glycocalyx is a gel-like layer covering the luminal surface of vascular endothelial cells. It comprises of membrane-attached proteoglycans, glycosaminoglycan chains, glycoproteins, and adherent plasma proteins. The glycocalyx maintains homeostasis of the vasculature, which includes controlling vascular permeability and microvascular tone, preventing microvascular thrombosis, and regulating leukocyte adhesion. In the past decades, the number of studies on endothelial glycocalyx has steadily grown. Glycocalyx emerged as an essential part of blood vessels involved in multiple physiological functions. Damage to glycocalyx is associated with many types of diseases. The structure and physiology and pathophysiology of the glycocalyx, as well as the clinical effects of glycocalyx degradation, are addressed throughout this study. We strive in particular to define therapeutic approaches for the survival or reparation of the glycocalyx.

The causes of people with physical disabilities aged 15-59 years in China / 中华预防医学杂志

<p><b>OBJECTIVE</b>To understand the present situation and the changes of causes of people with physical disabilities aged 15-59 years during the past 20 years in China.</p><p><b>METHODS</b>The data of causes of people with physical disabilities aged 15-59 collected from the results of The China National Sample Survey on Disability in 1987 and 2006 were analyzed and compared by using epidemiology method.</p><p><b>RESULTS</b>The main category of causes of people with physical disabilities aged 15-59 was disease, followed by injury factors, congenital diseases, eccyliosis and other factors. Their causing-disability rates were 0.720%, 0.595%, 0.224% and 0.186% respectively. Other traumas had the highest causing-disability rate of 0.296% in all causes. As compared with those in 1987, the causing-disability rates of disease factors, injury factors and congenital diseases and eccyliosis were increased obviously. The top five causes of disabilities aged 15-59 in China were other traumas, poliomyelitis, arthropathy, cerebrovascular diseases and industrial injury in 2006; while the other traumas, poliomyelitis, other known causes, unknown causes and vascular diseases were the top five in 1987.</p><p><b>CONCLUSION</b>Disease factors and injury factors should be the main causes of people with, physical disabilities aged at 15-59 years, and the other traumas should have the highest causing-disability rate, and the arthropathy and cerebrovascular diseases might become the main causes.</p>

An Analysis of Causes of Hearing Disability in Beijing Residents / 听力学及言语疾病杂志

Objective To study the main causes of hearing disability in Beijing residents. Methods The second national sample survey on disability of China was carried out in Beijing on April 1,2006. Muhiphase, stratified, proportional and cluster samplings were adopted to investigate 74 795 residents in Beijing, including 36 753 males and 38 042 females. 55 773 were urban residents while 19 022 from rural areas. The method of descriptive study was used to analyze the data of hearing disabitity in Beijing. Results Top five causes of hearing disability (including multiple disabilities) in Beijing were presbycusis, unknown, systematic diseases, noise induced, and odds media. The prevalence was 1.10%, 0.30%, 0.30%, 0.20% and 0.17%, respectively. Heredity, unknown and others were the main causes of children under 0～14 years. Unknown, ototoxicity, and otitis media were the main causes of people aged 15 ～59 years. Presbycusis, systematic diseases, noise induced and unknown were main causes of people aged 60 years and older. Presbycusis was the top cause of hearing disability for male and female residents as well as people live in urban and rural areas in Beijing. Conclusion Presbyeusis, unknown, systematic diseases, noise induced, and otitis media were main causes of hearing disability (including multiple disabilities) in Beijing.

Study on the main disability reasons and their changes in the elderly with physical disabilities in China / 中华老年医学杂志

Objective To understand the current status and the changes in main disability reasons in the elderly with physical disabilities during the past 20 years in China. Methods　The data of the elderly with physical disabilities aged 60 years and over that were from the national sample survey on disability in 1987 and 2006 were analyzed and compared by epidemiology methods. Results　In 2006.the main disability reasons in the elderly with physical disabilities aged 60 and over were disease factors,injury factors,other factors and congenital diseases and eccyliosis.The cause-specific disability prevalences were 5.262%,1.885%,1.000% and 0.200%respectively.Cerebrovaseular diseases showed the highest cause-specific disability prevalence of 2.552% in all the causes.Compared with the national sample survey in 1987,the cause-specific disability prevalences of disease factors and injury factors were obviously increased.The top five disability reasons in the elderly with physical disabilities aged 60 years and over in China were cerebrovascular diseases,arthropathy,miscellaneous traumas,other causes and unknown causes in the national sample survey in 2006;while vascular diseases,other traumas,other causes,unknown causes and pyogenic infection were the top five disability reasons in the national sample survey in 1987.The age-specific top five reasons were basically the same with the total top five disability reasons of the elderly with physical disabilities aged 60 years and over,and also the same relationship between sex-specific top five reasons and Iotal top five disability reasons in 1987 and 2006. Conclusions　Disease factors are the main disability reasons of the elderly with physical disabilities aged 60 years and over,and cerebrovascular diseases have the highest cause specific disability prevalence.The prevention and cure of cerebrovascular diseases,arthropathy and other traumas become the key points to prevent physical disability in the elderly.

Comparison of prevalence of physical disabilities in year 2006 and 1987,in China / 中华流行病学杂志

Objective To understand the present situation and the changes of epidemiological characteristics of people with physical disabilities during the past 20 years in China.Methods Data regarding physical disability from China National Sample Survey on Disability in 1987 and 2006 were collected and analyzed as well as compared with different epidemiological methods.Results In China,it was estimated that the overall prevalence of physical disabilities(PD)was 1.42% and there was an increase of 16.57 million people with PD for the past 20 years.In 1987,mild extremities took the largest proportion among all the people with PD.so as in 2006.The prevalence of PD was 3.76% in Tibet Autonomous Region which was also the highest in the country while Guangdong province had the lowest-0.64% in 1987.However,in 2006,Beijing had the highest prevalence of 3.20%,and the Zhejiang province the lowest-1.74%.PD prevalence increased in almost all China except Tibet Autonomous Region while Inner Mongolia Autonomous Region had the largest increase.The prevalence of PD showed an obvious increase in the rural areas exceeding the urban areas.The prevalence of PD in males was higher than in females.The trend that the increase of age-specific physical disability prevalence parallel to the increase of age.had not changed during the past 20 years.However the prevalence of different age groups with PD distinctly did change.The prevalence of PD in 0-14 of age only increased 0.10% while the prevalence in 65 year olds and over had increased 5.35% during the past 20 years.Conclusion During the past 20 years.the total number of people with physically disabled had increased in China.Factors as living in the North and Northeastern parts of the country or in the rural areas,being males and elderly,had become the highrisk populations.

Research on the causes of physical disabilities among children aged 0-14, in China / 中华流行病学杂志

Objective To understand the present situation and the changes on causes of physical disabilities among children aged 0-14 years for the past 20 years in China. Methods Data on children with physical disabilities aged 0-14 years from The China National Sample Survey on Disability in 2006 and 1987,were analyzed and compared. Results The categories on the causes of children with physical disabilities aged 0-14 could be grouped as: congenital diseases and eccyliosis, with injury factors, other factors and disease factors. The specific causing-disability rates were 0. 257%, 0.066%, 0.055% and0.041% respectively. Cerebral palsy rated the highest specific causing-disability as 0.129% in all of the causes. Compared with 1987, the specific causing-disability rate of congenital diseases and eccyliosis had an obvious increase while the rates of disease factors and other factors showed a substantial decrease. The top five causes of children with physical disabilities aged 0-14 years in China were cerebral palsy, deformity,other kinds of traumas, congenital diseases and eecyliosis in 2006. Other causes, postpoliomyelitis muscularatrophy,deformity,other kinds of traumas and unknown causes were the top five in 1987. The age-specific top five causes were basically the same as the total top five causes of children aged 0-14 years with physical disabilities in 1987 and 2006,so as the same relationship between sex-specific top five causes and total top five. Conclusion Congenital diseases and eccyliosis were the main causes of 0-14 year-old children with physical disabilities, and cerebral palsy had the highest specific causing-disability rate while injury factors gradually became the major one.