IPv6协议在校园网中的部署及关键技术

为了解决IPv4地址的紧张问题,各高校申请了IPv6地址,全面部署基于IPv6的下一代校园网已成为未来几年教育信息化建设的核心工作之一。针对湖南理工学院校园网这一特定网络环境,给出了具体的规划和部署及关键技术分析。     

Laboratory medicine in pandemic of COVID-19

After the outbreak in China in the year 2019, severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2) quickly spread around the world causing a protracted pandemic. Approximately one-third of infections appear to be asymptomatic. Symptomatic disease is characterized primarily by symptoms of respiratory tract infection of varying severity. But Coronavirus Disease 2019 (COVID-19) is much more than an acute respiratory disease because SARS-CoV-2 affects many organs inducing a vast number of symptoms such as cardiovascular, neurological, gastrointestinal, dermatological, with numerous complications. Short and long-term effects of infection, severe ones, and especially mild forms of the disease which affect a huge number of patients need to be further investigated. Laboratory medicine has a crucial role in early diagnosis of the disease, recognition of the patients who need hospital care, and close monitoring of hospitalized patients to timely identify associated clinical complications as well as follow-up of patients with long-term COVID-19.     

肥胖与运动研究进展——慢性炎症反应学说

对解释肥胖的新学说-慢性炎症反应学说进行了简单的介绍,并分析了几种重要的炎症反应标志物(如白细胞介素6、肿瘤坏死因子α等)在机体组织内合成与分泌的规律,同时还简单介绍了慢性炎症反应导致肥胖的可能机制:低氧及对应激的自我保护.另外,运动对肥胖的治疗具有积极作用,简单阐述了运动缓解肥胖的机制:抗炎症反应.     

Long-term endurance training increases serum cathepsin S and decreases IL-6 and hsCRP levels

Cathepsin S (CS) was shown to play a key role in cancer progression, atherosclerosis, heart valve disease, insulin resistance and diabetes mellitus. The present prospective study aimed to investigate the influence of sports on CS, interleukin-6 (Il-6) and high-sensitivity C-reactive protein (hsCRP) levels.

Ninety-eight of 109 participants completed the study. Ergometries were performed at baseline and after 8 months to evaluate/quantify the performance gain. Blood samples were taken at baseline and every 2 months. CS was measured by ELISA (enzyme-linked immunosorbent assay). Compared to the control group (mean performance gain ?3.41 ± 4.62%) we observed a significant physical-activity-induced increase of CS levels (3.45–3.73 ng · ml^?1; P = 0.027) and a significant decrease of Il-6 (2.43–1.91 pg · ml^?1; P = 0.031) and hsCRP-levels (0.11–0.09 mg · dl^?1; P = 0.001) in the intervention group (mean performance gain: 12.13 ± 6.32%). Furthermore, the tendency of the progression was significant for CS and Il-6 (P = 0.002/0.033).

We could show a significant sports-induced decrease of the classic inflammation parameters hsCRP/Il-6, probably expressing a downregulation of permanently prevalent inflammation processes. Simultaneously CS levels increased significantly. Our results show that increasing CS amounts are not simply to equal with an enhanced inflammation status and might even have beneficial effects on inflammation and angiogenesis.     

端到端网络环境下协同办公的应用分析

随着网络技术的发展,在下一代互联网技术和IPv6机制的支持下,网络的速度、质量、安全将得到加强,端到端技术将得到极大地应用。基于端到端技术的协同办公机制顺应扁平化发展趋势,使日常办公打破了时间和空间的限制,大大地提高了工作效率。     

IPComp协议在IPv6协议下应用

IPv6协议下,数据包应用AH或ESP协议使得数据包长度增加,从而导致网络负载增加,数据传输时延增加。本文介绍了使用IPComp在IPv6协议下处理的数据包进行压缩以减小数据包长度的方法。     

校园网安全问题分析与对策

本文首先分析了互联网安全问题的根本原因,接着介绍了校园网安全管理的特点和常见的威胁,然后介绍了当前CERNET安全管理的几项措施,提出了加强校园网安全管理的几项建议,最后介绍了以IPv6为核心的下一代互联网对网络安全的影响。     

速滑运动员赛前训练阶段IgG、IgM、IgA及IL-2、IL-6水平变化分析

为了了解我国优秀速滑运动员赛前阶段的机体免疫情况。对齐齐哈尔市冬季运动项目管理中心速滑队的8名女子1500m项目运动员赛前训练阶段的IgG、IgM、IgA及IL-2、IL-6的水平进行测定。结果显示,IgM在赛前第二周下降可能与IL-2的降低、皮质醇的升高有关。sIL-2R浓度的升高中和活化了的T淋巴细胞周围的IL-2,降低IL-2介导的免疫反应,使T淋巴细胞逐渐静息,导致机体免疫功能受到抑制。处于应激状态的特定环境之中,以及免疫功能失调均可使IL-6的分泌水平升高;从肌源性IL-6的角度分析,IL-6的逐渐升高也可能与速滑运动员的运动负荷增加和滑行的肌肉收缩方式有关。皮质醇含量逐渐上升,可能与调控IL-2降低其水平有关。     

Protective role of 17-β-estradiol towards IL-6 leukocyte expression induced by intense training in young female athletes

Abstract

Exercise performed at a competitive level could deeply modify the immune system and the cytokine response of athletes. In this report, we demonstrated that young elite female artistic gymnasts (n = 16; age: 9–15 years) showed an increase of interleukin 6 (IL-6) and tumour necrosis factor alpha (TNF-α) mRNA expression in blood mononuclear cells (PBMCs), in comparison to girls performing the same sport at a recreational level (n = 16; age: 10–15 years). The increase of IL-6 and TNF-α mRNAs appeared to be directly linked to the intensity and duration of the training. Moreover, in elite athletes engaged in artistic gymnastics or in synchronised swimming (n =34; age: 9–15 years), IL-6 gene expression appeared to be modulated by the levels of circulating oestrogens: pre-pubertal athletes (n = 20; age: 11 ± 1 years) revealed a higher increase in IL-6 than pubertal athletes (n = 14; age: 14 ± 1.6 years). In pre-pubertal athletes, body mass index (BMI) percentile was inversely correlated with the increase of both IL-6 and TNF-α. The consequence of these events was the shift of the cytokine profile towards a pro-inflammatory status. These modifications, induced by training performed at an elite level, might negatively affect the growth of female children athletes.     

广安地区上三叠统须家河组六段储层特征研究

通过大量研究表明：广安地区须六段储层岩石学特征以中～粗粒岩屑砂岩及长石岩屑砂岩为主。须六段储层经历了强烈的压实——压溶作用、胶结作用和溶蚀作用。主要的储集类型以孔隙型为主,亦存在裂缝——孔隙型。储集空间主要为粒间溶孔和剩余原生粒间孔。储层主要是受沉积,成岩及构造作用的影响,其中沉积作用是根本,构造作用是条件,成岩作用是关键。