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Search Results: 1 - 10 of 78573 matches for " Dongmei Chen "
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China: The Rise and Fall of ‘University Cities.’
EspacesTemps.net , 2010,
Abstract: In 1999, China’s State Council issued a ‘Decision Concerning the Deepening of Education Reform and the All-Out Promotion of Quality Education.’ This document introduced the term ‘education industry’ ( 教育产业 ) along with two major policy changes: a dramatic expansion in university admissions and the devolution of part of the control over higher education from the central government to the provinces. Yet in 2004 top officials of the Ministry of Education publicly denied that ...
Bowen entropy for actions of amenable groups
Dongmei Zheng,Ercai Chen
Mathematics , 2014,
Abstract: Bowen introduced a definition of topological entropy of subset inspired by Hausdorff dimension in 1973 \cite{B}. In this paper we consider the Bowen's entropy for amenable group action dynamical systems and show that under the tempered condition, the Bowen entropy of the whole compact space for a given F{\o}lner sequence equals to the topological entropy. For the proof of this result, we establish a variational principle related to the Bowen entropy and the Brin-Katok's local entropy formula for dynamical systems with amenable group actions.
Benthic Bacteria Community Changes in Responses to Different Organic Resources from Macrophyte- and Algae-Dominated Areas of Lake Taihu, China  [PDF]
Yali Tang, Dongmei Chen, Xiaoqin Yang, Ruohua Xu
Advances in Microbiology (AiM) , 2016, DOI: 10.4236/aim.2016.614097
Carbon resources play an important role in affecting the benthic bacterial community in shallow lakes. In this study, pyrosequencing was applied to compare bacteria phylogenic profile in incubated sediments with normal and exchanged organic detritus in macrophyte-dominated East Lake Taihu and algal-dominated Meiliang Bay. We observed significant bacteria species variations in sediments from two bays, regardless of treatments. RDA (Redundancy Analysis) analysis showed that sediment characteristics, especially concentrations of total nitrogen might account for this differentiation. Besides, algal-dominated Meiliang Bay sediment with addition of Vallisneria detritus exhibited higher bacterial species variations than the sediment amended with Microcystis detritus. To the contrary, sediments from macrophyte-dominated East Lake Taihu shared similar bacteria profile at all taxonomic levels and grouped together in MDS (multidimensional scaling) plots over the treatments with Vallisneria or Microcystis detritus addition into the sediment. We speculated that the different degradability of macrophyte detritus and algal detritus led to varied bacterial responses to exchanged organic resources and ultimately, the amounts, nutrient availability and degradability of organic resources may be main reasons for benthic bacteria community structure differentiation between the two states in shallow lakes.
A Case Report of Alendronate Treatment over 20 Years on Osteoporosis and Literature Review  [PDF]
Jinmei Deng, Enjing Chen, Suming Jie, Xiuzhen Cai, Dongmei Cai
Case Reports in Clinical Medicine (CRCM) , 2018, DOI: 10.4236/crcm.2018.76037
Abstract: Osteoporosis is commonly seen in aged people, but not much attention is paid to it. Patient compliance is challenged by many factors, including long-time treatment and high rates of fatality and disability caused by fragility fractures. With age-related changes, the treatment will last for a lifetime. A clinical case of postmenopausal patient who had received incontinuous treatment of alendronate for 20 years was studied in this article. As the level of compliance varied in different treatment phases, the curative outcome of this patient was altered. This study also presented a literature review to discuss the current situation, treatment and compliance of osteoporosis in China and the corresponding influences on bone mineral density (BMD) and prognosis. Hopefully, this study can increase physicians’ awareness of osteoporosis in clinical treatment and its pharmacotherapy and treatment course.
Enhanced Thermal Conductivity of Carbon Nanotube Arrays by Carbonizing Impregnated Phenolic Resins  [PDF]
Dongmei Hu, Hongyuan Chen, Zhenzhong Yong, Minghai Chen, Xiaohua Zhang, Qingwen Li, Zhen Fan, Zhihai Feng
Materials Sciences and Applications (MSA) , 2013, DOI: 10.4236/msa.2013.48055

A carbonization method is reported to improve the thermal conductivity of carbon nanotube (CNT) arrays. After being impregnated with phenolic resins, CNT arrays were carbonized at a temperature up to 1400°C. As a result, pyrolytic carbon was formed and connected non-neighboring CNTs. The pyrolysis improved the room temperature conductivity from below 2 W/m·K up to 11.8 and 14.6 W/m·K with carbonization at 800°C and 1400°C, respectively. Besides the light mass density of 1.1 g/cm3, the C/C composites demonstrated high thermal stability and a higher conductivity up to 21.4 W/m·K when working at 500°C.

Dynamics for Nonlinear Difference Equation
Chen Dongmei,Li Xianyi,Wang Yanqin
Advances in Difference Equations , 2009,
Abstract: We mainly study the global behavior of the nonlinear difference equation in the title, that is, the global asymptotical stability of zero equilibrium, the existence of unbounded solutions, the existence of period two solutions, the existence of oscillatory solutions, the existence, and asymptotic behavior of non-oscillatory solutions of the equation. Our results extend and generalize the known ones.
Dynamics for Nonlinear Difference Equation xn+1=(αxn k)/(β+γxn lp)
Dongmei Chen,Xianyi Li,Yanqin Wang
Advances in Difference Equations , 2009, DOI: 10.1155/2009/235691
Abstract: We mainly study the global behavior of the nonlinear difference equation in the title, that is, the global asymptotical stability of zero equilibrium, the existence of unbounded solutions, the existence of period two solutions, the existence of oscillatory solutions, the existence, and asymptotic behavior of non-oscillatory solutions of the equation. Our results extend and generalize the known ones.
On large deviations for amenable group actions
Dongmei Zheng,Ercai Chen,Jiahong Yang
Mathematics , 2015,
Abstract: By proving an amenable version of Katok's entropy formula and handling the quasi tiling techniques, we establish large deviations bounds for countable discrete amenable group actions. This generalizes the classical results of Lai-Sang Young.
Sequential Treatment Reduces the Acute Phases of Adverse Effect of Zoledronic Acid in First Time Users  [PDF]
Jinmei Deng, Dongmei Cai, Suming Jie, Enjing Chen, Xiuzhen Cai, Yanbing Li
Open Journal of Preventive Medicine (OJPM) , 2018, DOI: 10.4236/ojpm.2018.87018
Abstract: Objective: To investigate whether sequential regimen such as traditional anti-reabsorption medications followed by zoledronic acid could reduce the side effects after initiation of zoledronic acid in postmenopausal osteoporosis patients. Methods: A total of 156 postmenopausal osteoporosis patients who presented at our osteoporosis outpatient clinic were enrolled in this study. They were randomly divided into four groups: the control group, alendronate group, calcitonin group, and raloxifene group. All participants were treated with Caltrate 600 mg per day and calcitriol 0.25 ug per day as a baseline treatment, followed by administrating 5 mg/100 mL of zoledronic acid intravenously for one single time three months afterwards. During the abovementioned course of three months, the alendronate group received 70 mg of alendronate sodium orally once a week, the calcitonin group received nasal spray form of salmon calcitonin 10iu daily, the raloxifene group received 60mg of raloxifene orally daily, and the control group received nothing but only the baseline treatment. We tested parameters such as β-cross, blood calcium level, renal function both pre and post zoledronic acid treatment. We also documented those side effects that typically occurred within one week of treatment initiation, which included the proportion, severity, onset time, and duration of the fever, demand for pain medication, severity of bone and joint pain, flu-like symptoms, arrhythmia, blood calcium level, and kidney function impairment. We also evaluated how willing the patients were to receive a second dose of zoledronic acid. Then we did comparative analysis between control group and sequential group. Results: The side effects such as fever, bone and joint pain, flu-like symptoms after zoledronic acid treatment in alendronate group and calcitonin group were all significantly lower than that in control group, while raloxifene group showed no significant difference compared to that in the control group. The proportions of patients who needed NSAIDs in the alendronate group and the calcitonin group were significantly lower than that in control group. However, the raloxifene group showed no significant difference in the NSAIDs demand from that of the control group. The percentages of patients who consented to a second dose of zoledronate therapy in the alendronate, calcitonin and raloxifene groups were significantly higher than that in the control group. Conclusions: Sequential treatment with alendronate sodium or
The Role of Health Education in Improving Patient Compliance with Zoledronic Acid  [PDF]
Suming Jie, Jinmei Deng, Ermei Jie, Enjing Chen, Caixia Lin, Xiuzhen Cai, Dongmei Cai
Open Journal of Nursing (OJN) , 2018, DOI: 10.4236/ojn.2018.810053
Abstract: Objective: To define the role of health education in improving patient compliance with Zoledronic Acid for osteoporosis treatment and management and draw closer attention of patients and physicians to the importance of health education. Methods: A total of 198 postmenopausal patients with osteoporosis who were admitted by the osteoporosis outpatient clinic of our hospital and had the first administration of Zoledronic Acid in 2015 were invited to participate in the follow-up visit that involved questions concerning the frequency of health education and the questionnaire survey on osteoporosis in 2015 and the administration of Zoledronic Acid during the past three years. The patients were divided into five groups according to the frequency of health education to compare the survey results of each group in 2015 and 2018 and investigate the differences in the scores and frequency of administration among the five groups. Results: Among the 198 patients, there were 182 attending the follow-up visit. In terms of the frequency of health education (FREQ = 0, 1, 2, 3, 4), these patients were divided into five groups of 47, 63, 35, 18 and 19 members respectively. After three years of treatment, the questionnaire score of each group was higher than the pre-treatment level and the difference showed statistical significance (p < 0.05, respectively); compared to those who had never received health education (FREQ = 0), the patients who had participated in health education activities at different levels (FREQ = 1, 2, 3, 4) scored significantly higher in the questionnaire survey and increased the frequency of administration of Zoledronic Acid on average; particularly, those who had received health education and Zoledronic Acid treatment twice and above benefited the most. Conclusion: Health education is an effective approach to influence a patient’s knowledge connected to relevant diseases in a positive way and improve patient compliance with Zoledronic Acid treatment. An enhanced health education program can be developed to assist the patients in chronic disease management.
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