SCADA data based condition monitoring of wind turbines

Wind turbines（WTs） are quite expensive pieces of equipment in power industry. Maintenance and repair is a critical activity which also consumes lots of time and effort, hence making it a costly affair. Carefully planning the maintenance based upon condition of the equipment would make the process reasonable. Mostly the WTs are equipped with some kind of condition monitoring device/system, which provides the information about the device to the central data base i.e., supervisory control and data acquisition（SCADA） data base. These devices/systems make use of data processing techniques/methods in order to detect and predict faults. The information provided by condition monitoring equipments keeps on recoding in the SCADA data base. This paper dwells upon the techniques/methods/algorithms developed, to carry out diagnosis and prognosis of the faults, based upon SCADA data.Subsequently data driven approaching for SCADA data interpretation has been reviewed and an artificial intelligence（AI） based framework for fault diagnosis and prognosis of WTs using SCADA data is proposed.     

碎裂QRS波对急性心肌梗死患者的短期预后评估(英文)简

This study is aimed to investigate the clinical significance and the short-term prognostic value of frag- mented QRS （fQRS） for patients with acute myocardial infarction （AMI）. Three hundred patients with AMI were tested with retrospective analysis on the patients＇ clinical information, hospitalized treatment, fQRS onset time, location of lesions, and other relevant data, in order to assess the relationship between the presence of fQRS and its prognosis. The rates of malignant cardiac arrhythmia, left ventricular systolic dysfunction （LVSD）, and mortality in the positive fQRS group were 13.6%, 29.2%, and 23.7%, respectively, with all showing a p value 〈0.05. For the ST segment elevation myocardial infarction （STEMI） subgroup, all the rates showed significant differences with a p value 〈0.01, while for the non-STEMI （NSTEMI） subgroup showed no significant differences. In patients with a positive fQRS, there were no differences in malignant cardiac arrhythmia between patients with and without percutaneous coronary in- tervention （PCI） （p〉0.05）. As for the LVSD and mortality, the p values between patients with and without PCI were 0.031 and 0.000, respectively, suggesting statistical significance. The results imply that AMI patients with positive fQRS especially for the patients with STEMI had higher rates of malignant cardiac arrhythmia, LVSD, and mortality than the non-fQRS group. Patients of AMI with positive fQRS, who underwent early revascularization, could lower the incidence of the cardiovascular event. In addition, the presence of fQRS could be used as an indication of early in- tervention treatment for patients.     

运动对慢性心力衰竭的作用

心力衰竭是目前一个预后前景非常不好,甚至令人沮丧的,主要的健康问题.近年来对慢性心力衰竭患者的研究表明,耐力训练或局部力量训练可以使骨骼肌产生一定改善.作者将多年来关于运动对CHF作用的研究成果进行了分析和综述,以便于在实践中推广.     

Copeptin and its potential role in diagnosis and prognosis of various diseases

The need for faster diagnosis, more accurate prognostic assessment and treatment decisions in various diseases has lead to the investigations of new biomarkers. The hope is that this new biomarkers will enable early decision making in clinical practice. Arginine vasopressin (AVP) is one of the main hormones of the hypothalamic-pituitary-adrenal axis. Its main stimulus for secretion is hyperosmolarity, but AVP system is also stimulated by exposure of the body to endogenous stress. Reliable measurement of AVP concentration is difficult because it is subject to preanalytical and analytical errors. It is therefore not used in clinical practice. Copeptin, a 39-aminoacid glycopeptide, is a C-terminal part of the precursor pre-provasopressin (pre-proAVP). Activation of AVP system stimulates copeptin secretion into the circulation from the posterior pituitary gland in equimolar amounts with AVP. Therefore, copeptin directly reflects AVP concentration and can be used as surrogate biomarker of AVP secretion. Even mild to moderate stress situations contribute to release of copeptin. These reasons have lead to a handful of research on copeptin in various diseases. This review summarizes the current achievements in the research of copeptin as a diagnostic and prognostic marker and also discusses its association in different disease processes.     

AMI患者PCI术对血浆BNP水平变化的初步临床观察

目的:观察PCI术对AMI患者血浆中BNP的水平变化,初步探讨PCI对AMI患者预后的影响.方法:采用快速荧光免疫测定法对20例AMI患者PCI治疗前后和20例对照组血浆BNP水平进行检测.结果:AMI患者血浆BNP在AMI患者PCI术与对照组比较有显著性差异(P＜0.05),PCI治疗后呈明显下降趋势.结论:AMI患者PCI治疗血浆BNP水平变化说明PCI术能对改善AMI患者的预后有重要意义.     

外伤性颅内血肿的CT表现与预后

回顾性分析临床及ＣＴ资料齐全并经手术的外伤性颅内血肿８７例。着重从术前ＣＴ表现的血肿部位、出血量、脑室池受压及中线结构移位程度等方面分析，结合临床资料，对外伤性血肿的预后作出适当判断，为临床治疗提供帮助。     

Colorectal cancer, one entity or three

Understanding of the mechanism ofcolorectal carcinogenesis has been gaining momentum for some years on account of its high incidence and impact on the lives of individuals affected. Different genetic abnormalities have been found in colorectal cancers from different sites. For example, proximal colon cancer is usually related to the nucleotide instability pathway, as mi-crosatellite instability (MSI). However, distal colon cancer is usually associated with specific chromosomal instability (CIN). The development of cancer at the rectum, though similar to that at the colon, displays its own unique features. These differences might be partially attributed to different embryological development and physiological circumstances. Environmental factors such as diet and alcohol intake also differ in their role in the development of tumors in the three segments, proximal colon, distal colon, and rectum. "Proximal shift" of colon cancer has been known for some time, and survival rates of colorectal cancer are higher when rectal cancers are excluded, both of which emphasize the three different segments of colorectal cancer and their different proper-ties. Meanwhile, colonic and rectal cancers are distinctive therapeutic entities. The concept of three entities of colorectal cancer may be important in designing clinical trails or therapeutic strategies. However, the dispute about the inconsistency of data con-ceming the site-specific mechanism of colorectal carcinoma does exist, and more evidence about molecular events of carcino-genesis and targeted therapy needs to be collected to definitely confirm the conception.     

Prognostic relevance of motor talent predictors in early adolescence: A group- and individual-based evaluation considering different levels of achievement in youth football

ABSTRACT

In the debate about the usefulness of motor diagnostics in the talent identification process, the prognostic validity for tests conducted in early adolescence is of critical interest. Using a group- and individual-based statistical approach, this prospective cohort study evaluated a nationwide assessment of speed abilities and technical skills regarding its relevance for future achievement levels. The sample consisted of 22,843 U12-players belonging to the top 4% in German football. The U12-results in five tests served as predictors for players’ selection levels in U16-U19 (youth national team, regional association, youth academy, not selected). Group-mean differences proved the prognostic relevance for all predictors. Low individual selection probabilities demonstrated limited predictive values, while excellent test results proved their particular prognostic relevance. Players scoring percentile ranks (PRs) ≥ 99 had a 12 times higher chance to become youth national team players than players scoring PR < 99. Simulating increasing score cut-off values not only enhanced specificity (correctly identified non-talents) but also led to lower sensitivity (loss of talents). Extending the current research, these different approaches revealed the ambiguity of the diagnostics’ prognostic relevance, representing both the usefulness and several pitfalls of nationwide diagnostics. Therefore, the present diagnostics can support but not substitute for coaches’ subjective decisions for talent identification, and multidisciplinary designs are required.     

阑尾源性弥漫性腹膜炎125例围手术期处理

目的探讨阑尾源性弥漫性腹膜炎围手术期处理方法。方法对1989年11月至2002年12月作者所在医院手术治疗的125例阑尾炎所致弥漫性腹膜炎临床资料进行回顾性研究。结果治愈120例，死亡5例。切口感染31例，肺炎5例，肠粘连梗阻8例。肠间或盆腔脓肿8例。结论对阑尾源性弥漫性腹膜炎患者术前、术后注重水、电解质、酸碱平衡的维持和失衡的纠正、有效抗生素应用、中西医结合治疗，术中彻底清理腹腔，妥善放置腹腔引流管及切口皮下引流管．强心、利尿等综合处理措施，保持内环境稳定。减少并发症发生．可以明显改善预后和病程转归。     

外科危重病人并发ARDS的防治

目的探讨外科危重病人并发ARDS的诊治和预防要点。方法1989年12月至1996年12月40例外科危重病人作为Ⅰ组。1997年1月至2003年1月62例外科危重病人为Ⅱ组。比较两组诊治及并发ARDS情况,对病例资料进行回顾性分析。结果Ⅰ组40例外科危重病人并发ARDS12例,死亡6例,Ⅱ组62例外科危重病人并发ARDS13例,死亡3例。其发病率x2检验p>0.05,其死亡率x2检验p<0.05。结论早期诊断,尽早治疗是预防外科危重病人并发ARDS的关键。早期呼吸支持是治疗ARDS的重要措施。