Showing 52,721 - 52,740 results of 54,221 for search 'Methil~', query time: 1.79s Refine Results
  1. 52721
  2. 52722
  3. 52723

    Gaussian Process Regression Total Nitrogen Prediction Based on Data Decomposition Technology and Several Intelligent Algorithms by WANG Yongshun, CUI Dongwen

    Published 2023-01-01
    “…Total nitrogen (TN) is one of the important indicators to reflect the degree of water pollution and measure the eutrophication status of lakes and reservoirs.To improve the accuracy of TN prediction,based on the empirical wavelet transform (EWT) and wavelet packet transform (WPT) decomposition technology,this paper proposes a Gaussian process regression (GPR) prediction model optimized by osprey optimization algorithm (OOA),rime optimization algorithm (ROA),bald eagle search (BES) and black widow optimization algorithm (BWOA) respectively.Firstly,the TN time series is decomposed into several more regular subsequence components by EWT and WPT respectively.Then,the paper briefly introduces the principles of OOA,ROA,BES,and BWOA algorithms and applies OOA,ROA,BES,and BWOA to optimize GPR hyperparameters.Finally,EWT-OOA-GPR,EWT-ROA-GPR,EWT-BES-GPR,EWT-BWOA-GPR,WPT-OOA-GPR,WPT-ROA-GPR,WPT-BES-GPR,WPT-BWOA-GPR models (EWT-OOA-GPR and other eight models for short) are established to predict the components of TN by the optimized super-parameters.The final prediction results are obtained after reconstruction,and WT-OOA-GPR,WT-ROA-GPR,WT-BES-GPR and WT-BWOA-GPR models based on wavelet transform (WT) are built.Eight models,including EWT-OOA-SVM based on support vector machine (SVM),the paper compares the unoptimized EWT-GPR,WPT-GPR models,and the uncomposed OOA-GPR,ROA-GPR,BES-GPR,and BWOA-GPR models.The models were verified by the monitoring TN concentration time series data of Mudihe Reservoir,an important drinking water source in China,from 2008 to 2022.The results are as follows.① The average absolute percentage error of eight models such as EWT-OOA-GPR for TN prediction is between 0.161% and 0.219%,and the coefficient of determination is 0.999 9,which is superior to other comparison models,with higher prediction accuracy and better generalization ability.② EWT takes into account the advantages of WT and EMD.WPT can decompose low-frequency and high-frequency signals at the same time.Both of them can decompose TN time series data into more regular modal components,significantly improving the accuracy of model prediction,and the decomposition effect is better than that of the WT method.③ OOA,ROA,BES,and BWOA can effectively optimize GPR hyperparameters and improve GPR prediction performance.…”
    Get full text
    Article
  4. 52724
  5. 52725

    Long-term indwelling trans-anal ileus tube placement and nursing management for an elderly patient with intestinal obstruction (1例高龄肠梗阻患者长期留置经肛型肠梗阻导管的护理体会)... by ZHANG Jia (张佳), SUN Xin (孙鑫)

    Published 2024-03-01
    “…The key points of care are to improve the fixing method to prevent the tube dislocation; Protect the skin and prevent the occurrence of pressure ulcers; Keep the tube unobstructed to ensure effective drainage; Develop a diet plan to meet nutritional intake; Exercise reasonably to prevent complications; Strengthen psychological care and promote the recovery of the patient. …”
    Get full text
    Article
  6. 52726

    Effect of Electroacupuncture on Key Muscles on Motor Function Recovery of Lower Limbs in Patients with Incomplete Spinal Cord Injury by Wen GUO, Jun LENG, Fangyue WEI, Huimin LIU, Meng TIAN, Chen ZHANG, Xiaolei FANG

    Published 2020-02-01
    “…Objective:To observe the effects of electroacupuncture on key muscles on motor function of lower limb in patients with incomplete spinal cord injury.Methods:A total of sixty patients with incomplete spinal cord injury were divided into control group and treatment group of 30 cases respectively according to the random number table method. …”
    Get full text
    Article
  7. 52727
  8. 52728

    Progress in Treatment of Temporomandibular Joint Disorder by Wei YANG, Minghua XIE, Yu CAI, Zhuoming CHEN

    Published 2019-10-01
    “…We review the researchs of temporomandibular joint disorder (TMD) in domestic and foreign scholars, respectively, to explain in four aspects, such as etiology, clinical characteristics, treatment methods and preventive measures. TMD ranks fourth in oral epidemiology, which is related to estrogen levels in patients, female prevalence is higher than male, high prevalence among young adults. …”
    Get full text
    Article
  9. 52729
  10. 52730
  11. 52731
  12. 52732
  13. 52733
  14. 52734
  15. 52735
  16. 52736
  17. 52737

    Event-Related Potentials Study of Cognitive Functions in Patients with Post-Stroke Cognitive Impairment by XU Peiao, WEI Wei, ZHAO Yuqing, KONG Weicheng, LI Xinlei, QIU Lifang, CHEN Jie, XUE Xiehua

    Published 2024-01-01
    “…ObjectivePost-stroke cognitive impairment (PSCI) is a common syndrome associated with cerebral stroke, and there is a significant lack of objective cognitive assessment methods clinically for PSCI. This study aims to investigate the correlation between different electrode P300 latencies and cognitive functions in patients with PSCI, to provide experimental support for using P300 as an objective index in cognitive function assessment.MethodsThis study included 46 patients diagnosed with post-stroke cognitive impairment from May to August 2023 at the Rehabilitation Hospital affiliated with Fujian University of Traditional Chinese Medicine, along with 20 control subjects. …”
    Get full text
    Article
  18. 52738

    Effect and curative effect of Sanqitongshu capsule combined with argatroban on neurological deficits elderly patients with acute ischemic stroke by Fang Hu, Yunping Liu, Jia Li, Hui Xuan, Huijuan Wang, Xuehai Lv

    Published 2025-01-01
    “…[Objective] To explore the effects of Sanqitongshu capsule combined with argatroban on neurological deficits and peripheral blood endothelin-1 (ET-1), CD41, CD62P and soluble intercellular adhesion molecule-1 (sICAM-1) expressions in elderly patients with acute ischemic stroke. [Methods] A total of 106 elderly patients with acute ischemic stroke from Handan Central Hospital were divided into a study group and a control group according to the random number table method, each had 53 cases.Both groups were given basic treatment, the control group was treated with argatroban, the study group was treated with Sanqitongshu capsule on the basis of the control group.Both groups were treated for 7 days.The clinical efficacy, the National Institutes of Health Stroke Scale (NIHSS) score, hemorheology index, the expression levels of ET-1, CD41, CD62P and sICAM-1 in the two groups before and after treatment, and adverse reactions of the two groups were compared. …”
    Get full text
    Article
  19. 52739
  20. 52740