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经颅磁刺激仪配合康复护理对脑卒中患者的Fugl-Meyer和FCA评分及ADL评分效果分析 被引量:9
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作者 卢花 周鑫 《当代医学》 2018年第35期64-66,共3页
目的探讨康复护理联合颅磁刺激对脑卒中患者的临床疗效及日常行为能力的影响研究。方法选取本院2015年7月至2016年7月的患有脑卒中偏瘫的患者100例,利用动态随机的方法随机分成两组,每组50例。研究组患者采用颅磁刺激联合康复护理对患... 目的探讨康复护理联合颅磁刺激对脑卒中患者的临床疗效及日常行为能力的影响研究。方法选取本院2015年7月至2016年7月的患有脑卒中偏瘫的患者100例,利用动态随机的方法随机分成两组,每组50例。研究组患者采用颅磁刺激联合康复护理对患者进行康复治疗;对照组患者给予单纯康复护理与训练。对两组患者治疗前与治疗后采用运动功能评定量表(Fugl-Meyer)与功能综合评定量表(FCA)进行肢体运动功能测评,对所有患者治疗后采用日常生活能力采用ADL量表(ADL)进行测评。结果两组患者治疗后Fugl-Meyer评分、FCA评分、ADL评分明显优于治疗前,差异具有统计学意义(P<0.05);研究组治疗后Fugl-Meyer评分、FCA评分、ADL评分优于对照组(P<0.05)。结论脑卒中患者在正常药物治疗的基础上采取康复护理联合颅磁刺激的康复治疗方案,可以促进患者的肢体运动功能以及日常生活能力,在采取治疗的过程中具有较强的安全性能,且无不良反应发生。 展开更多
关键词 颅磁刺激 脑卒中 功能独立评定量表 运动功能评定量表
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围绝经期评定量表Menopause Rating Scale(MRS)中文版信度及效度分析 被引量:11
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作者 黄琳 刘琴 刘月 《护理研究》 北大核心 2018年第21期3435-3437,共3页
[目的]测定围绝经期评定量表(MRS)中文版的信度和效度。[方法]应用MRS中文版对126例围绝经期女性进行测量,对测定结果进行信度和效度分析。[结果]MRS中文版总的Cronbach′sα系数为0.890,3个维度的Cronbach′sα系数为0.731~0.868;总... [目的]测定围绝经期评定量表(MRS)中文版的信度和效度。[方法]应用MRS中文版对126例围绝经期女性进行测量,对测定结果进行信度和效度分析。[结果]MRS中文版总的Cronbach′sα系数为0.890,3个维度的Cronbach′sα系数为0.731~0.868;总问卷的重测信度为0.887,3个维度的重测信度为0.661~0.883;探索性因子分析表明MRS中文版包括3个因子,共11个条目;3个因子可以解释总方差的73.68%;验证性因子分析显示数据拟合良好(χ2/df为1.170,近似误差均方根(RMSEA)为0.050,规范拟合指数(NFI)为0.894。[结论]MRS中文版具有良好的信度和效度,适合测量中国围绝经期妇女的生活质量。 展开更多
关键词 围绝经期 围绝经期评定量表(MRS) 生活质量 信度 效度
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Effect of Heating Rates on the Formable Oxide Scale on a C-Steel Surface 被引量:1
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作者 A.A.El-Meligi 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2004年第5期591-594,共4页
Oxide scale formation on a C-steel surface has been investigated using linear heating rates ranging from 0.1℃/min to 10℃/min at high temperatures. The studies on the oxide scale formation at high temperature (650℃)... Oxide scale formation on a C-steel surface has been investigated using linear heating rates ranging from 0.1℃/min to 10℃/min at high temperatures. The studies on the oxide scale formation at high temperature (650℃) at slower heating rate (0.1℃/min) shows that the kinetic regime is linear. X-ray diffraction measurements revealed that the scale constituents are significantly influenced by the heating rate. The adherence of the scale was improved by using slower heating rate (0.1℃/min-≤650℃), while above such degree the scale was susceptible to cracking and flaking out of the alloy surface. In fact, the development of oxide growth stresses can cause considerable scale cracking. As well, variation of the crystallite sizes under the aforementioned conditions might affect the scale stacking to the alloy surface. The secondary electron detector images of the oxide scale shows that the scale was imperfectly smooth and there were a number of voids and defects in the scale skin, especially at fast heating rate. This observation could be attributed to defects of the as-received alloy. In general, slower heating rate reduced the defects of the scale and improved its adherence. 展开更多
关键词 C-steel Oxide scale Heating rate Weight gain XRD
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Comparison of diagnostic validity of two autism rating scales for suspected autism in a large Chinese sample 被引量:4
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作者 Jia-Hui Chu Fang Bian +3 位作者 Rui-Ying Yan Yan-Lin Li Yong-Hua Cui Ying Li 《World Journal of Clinical Cases》 SCIE 2022年第4期1206-1216,共11页
BACKGROUND Autism is the most common clinical developmental disorder in children.The childhood autism rating scale(CARS)and autistic autism behavior checklist(ABC)are the most commonly used assessment scales for diagn... BACKGROUND Autism is the most common clinical developmental disorder in children.The childhood autism rating scale(CARS)and autistic autism behavior checklist(ABC)are the most commonly used assessment scales for diagnosing autism.However,the diagnostic validations and the corresponding cutoffs for CARS and ABC in individuals with suspected autism spectrum disorder(ASD)remain unclear.Furthermore,for suspected ASD in China,it remains unclear whether CARS is a better diagnostic tool than ABC.Also unclear is whether the current cutoff points for ABC and CARS are suitable for the accurate diagnosis of ASD.AIM To investigate the diagnostic validity of CARS and ABC based on a large Chinese sample.METHODS A total of 591 outpatient children from the ASD Unit at Beijing Children’s Hospital between June and November 2019 were identified.First,the Clancy autism behavior scale(CABS)was used to screen out suspected autism from these children.Then,each suspected ASD was evaluated by CARS and ABC.Receiver operating characteristic(ROC)curve analysis was used to compare diagnostic validations.We also calculated the area under the curve(AUC)for both CARS and ABC.RESULTS We found that the Cronbach alpha coefficients of CARS and ABC were 0.772 and 0.426,respectively.Therefore,the reliability of the CARS was higher than that of the ABC.In addition,we found that the correlation between CARS and CABS was 0.732.Next,we performed ROC curve analysis for CARS and ABC,which yielded AUC values of 0.846 and 0.768,respectively.The cutoff value,which is associated with the maximum Youden index,is usually applied as a decision threshold.We found that the cutoff values of CARS and ABC were 34 and 67,respectively.CONCLUSION This result indicated that CARS is superior to ABC in the Chinese population with suspected ASD. 展开更多
关键词 Suspected autism spectrum disorder CHILDREN Childhood autism rating scale Autism behavior checklist Receiver operating characteristic curve Cutoff value
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Single-Channel Speech Enhancement Using Critical-Band Rate Scale Based Improved Multi-Band Spectral Subtraction 被引量:1
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作者 Navneet Upadhyay Abhijit Karmakar 《Journal of Signal and Information Processing》 2013年第3期314-326,共13页
This paper addresses the problem of single-channel speech enhancement in the adverse environment. The critical-band rate scale based on improved multi-band spectral subtraction is investigated in this study for enhanc... This paper addresses the problem of single-channel speech enhancement in the adverse environment. The critical-band rate scale based on improved multi-band spectral subtraction is investigated in this study for enhancement of single-channel speech. In this work, the whole speech spectrum is divided into different non-uniformly spaced frequency bands in accordance with the critical-band rate scale of the psycho-acoustic model and the spectral over-subtraction is carried-out separately in each band. In addition, for the estimation of the noise from each band, the adaptive noise estimation approach is used and does not require explicit speech silence detection. The noise is estimated and updated by adaptively smoothing the noisy signal power in each band. The smoothing parameter is controlled by a-posteriori signal-to-noise ratio (SNR). For the performance analysis of the proposed algorithm, the objective measures, such as, SNR, segmental SNR, and perceptual evaluations of the speech quality are conducted for the variety of noises at different levels of SNRs. The speech spectrogram and objective evaluations of the proposed algorithm are compared with other standard speech enhancement algorithms and proved that the musical structure of the remnant noise and background noise is better suppressed by the proposed algorithm. 展开更多
关键词 SINGLE-CHANNEL SPEECH Enhancement Critical-Band RATE scale Spectral Over-Subtraction Adaptive Noise Estimation Objective Measure SPEECH Spectrograms
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Assessment of Stress Cognitive Control and Executive Function with Stress Control Rating Scale (ECOSTRESS) and Low Resolution Brain Electromagnetic Tomography (LORETA) (In Portuguese People in Situations of Unemployment and Economic Insufficiency) 被引量:1
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作者 Eduardo Gonçalves Marco Moniz Saul Neves Jesus 《Open Journal of Psychiatry》 2016年第2期158-164,共7页
This article reviews the constructs of stress, appraisal, coping, according to a transactional perspective, and executive function, and presents a stress control rating scale (ECOSTRESS), which design is founded in th... This article reviews the constructs of stress, appraisal, coping, according to a transactional perspective, and executive function, and presents a stress control rating scale (ECOSTRESS), which design is founded in these constructs. This psychometric tool is useful in the assessment of cognitive control of stress, correlated with the function of dorsolateral prefrontal cortex. It has been validated for its use in the assessment of Portuguese people in situations of stress related to unemployment and economic insufficiency. Also, within the context of the cognitive control of stress, it is highlighted the usefulness of low resolution brain electromagnetic tomography (LORETA). 展开更多
关键词 Stress Anxiety Depression MANIA Economic Insufficiency Executive Function Anterior Cingulate Cortex Dorsolateral Prefrontal Cortex Stress Control rating scale (ECOSTRESS) Low Resolution Brain Electromagnetic Tomography (LORETA) NEUROFEEDBACK
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Image Tamper Detection and Multi-Scale Self-Recovery Using Reference Embedding with Multi-Rate Data Protection 被引量:1
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作者 Navid Daneshmandpour Habibollah Danyali Mohammad Sadegh Helfroush 《China Communications》 SCIE CSCD 2019年第11期154-166,共13页
This paper proposes a multi-scale self-recovery(MSSR)approach to protect images against content forgery.The main idea is to provide more resistance against image tampering while enabling the recovery process in a mult... This paper proposes a multi-scale self-recovery(MSSR)approach to protect images against content forgery.The main idea is to provide more resistance against image tampering while enabling the recovery process in a multi-scale quality manner.In the proposed approach,the reference data composed of several parts and each part is protected by a channel coding rate according to its importance.The first part,which is used to reconstruct a rough approximation of the original image,is highly protected in order to resist against higher tampering rates.Other parts are protected with lower rates according to their importance leading to lower tolerable tampering rate(TTR),but the higher quality of the recovered images.The proposed MSSR approach is an efficient solution for the main disadvantage of the current methods,which either recover a tampered image in low tampering rates or fails when tampering rate is above the TTR value.The simulation results on 10000 test images represent the efficiency of the multi-scale self-recovery feature of the proposed approach in comparison with the existing methods. 展开更多
关键词 TAMPER detection image recovery MULTI-scale SELF-RECOVERY tolerable tampering rate
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Application of the Childhood Autism Rating Scale to Grasp Autistic Characteristics of the Trainees with Intellectual Disabilities in Agricultural Vocational Training
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作者 Masahiro Toyoda Yuko Yokota Midori Kaneko 《Journal of Behavioral and Brain Science》 2019年第8期301-312,共12页
The purpose of this study was to propose indicators for grasping autistic characteristics of people with intellectual disabilities who were going to engage in agricultural vocational training. We analyzed the data of ... The purpose of this study was to propose indicators for grasping autistic characteristics of people with intellectual disabilities who were going to engage in agricultural vocational training. We analyzed the data of the Childhood Autism Rating Scale (CARS) of 44 students at the high school course of a special needs education school who participated in agricultural vocational training. The data were divided into two groups according to the scores of “General Impressions”, one of 15 question items of the CARS: one was the group whose score was 1 (usual), and the other was the group whose scores were 1.5 to 4 (unusual). The results of the Mann-Whitney U test showed significant differences between two groups in eight items including “Relating to People” (p Relating to People” with six other items. As a result, “Relating to People” was considered to be the most effective item to know the participant’s autistic characteristics at a very early stage of training. Eventually, adding two items, “Body Use” and “Imitation” which are necessary to master agricultural tasks, to “Relating to People”, we proposed three indicators. 展开更多
关键词 AGRICULTURAL VOCATIONAL Training CARS (Childhood AUTISM rating scale) Behavioral Observation Cooperation between Agriculture and WELFARE
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Using dementia rating scales in the diagnosis of Alzheimer’s disease
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作者 Jin Qiao Jianbo Yang Qiumin Qu Jianfeng Han Guogang Luo Aiqun Ma 《Journal of Nanjing Medical University》 2006年第2期109-112,共4页
Objective: To study the significance of dementia rating scales in the diagnosis of Alzheimer' s disease(AD). Methods: Probable AD patients(118 cases) diagnosed according to NINCDS-ADRDA criteria and the normal ... Objective: To study the significance of dementia rating scales in the diagnosis of Alzheimer' s disease(AD). Methods: Probable AD patients(118 cases) diagnosed according to NINCDS-ADRDA criteria and the normal controls(100 cases) were examined with a battery of neuropsychological tests and the dementia severity of AD patients was determined with clinical dementia rating (CDR). Changed neuropsychological characteristics of different AD dementia severities were analyzed. The discriminant analysis and ROC curve analysis were perfomed to analyze the specificity, the sensitivity, and the general accuracy of various dementia rating scales in the diagnosis of AD, and the area under the ROC curve. Results: The total cognition function in mild (CDR = 1 ), moderate(CDR = 2) and severe stages(CDR=3) of AD had an obvious trend of continuous decline, with the MMSE values 17.44±2.64, 13.90±4.32, and 5.50 ± 3.90 respectively. The trend of decline of the verbal fluency function in AD was same as that of total cognition function. The visuospatial function was reduced in early stage of AD (CDR = 1 ) and completely lost in moderate and severe AD. Delay memory function began to show decline in the early stage of AD, and the decline turned apparent in moderate and severe AD. Immediate memory function showed unchanged in early stage of AD, while showed decline in moderate AD, and the decline became very quick in severe AD. The impairment of daily living ability and social activity function developed with the severity degree of AD. But the decline of social activity function was very quick in moderate stage of AD. In general, the leading scale to diagnose AD was FOM, followed by RVR, POD, MMSE, BD,ADL and DS. When MMSE was combined with one or more of FOM, RVR, BD, DS, the general accuracy in distinguishing AD from the normal controls was improved. Conclusion: Neuropsychological test is useful in the diagnosis of AD, especially in the early stage. The validity is improved when dementia rating scales are combined correctly. 展开更多
关键词 alzheimer''s disease NEUROPSYCHOLOGICAL dementia rating scale DIAGNOSIS
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Effect of Rating Scales and Test Parts of Body on the Evaluation Results of Fabric-evoked Prickle
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作者 王革辉 RON Postle 张渭源 《Journal of Donghua University(English Edition)》 EI CAS 2006年第3期102-105,共4页
The effect of rating scales and test parts of body on the fabric-evoked prickle evaluation results are studied by carrying out subjective evaluation tests under controlled environment conditions (24 4±1)℃, (6... The effect of rating scales and test parts of body on the fabric-evoked prickle evaluation results are studied by carrying out subjective evaluation tests under controlled environment conditions (24 4±1)℃, (65 =l= 5) %RH. Ten college female students aged about 20 were chosen as the subjects, who have participated a preliminary training on subjective prickle evaluation. The prickle of a range of 9 light-weight worsted woven wool and wool blend fabrics and a cotton fabric were tested by using a 1 - 5 rating scale and using a 0 - 10 rating scale respectively at different test parts of body respectively such as forearm, upper arm ball and neck back. The test results were statistically analyzed. It is found that there is a significant correlation coefficient between the evaluation results of using the 1 - 5 rating scale and of using the 0- 10 rating scale. It is also found that there are highly significant correlation coefficients between the evaluation results of using the forearm prickle test and the neck back prickle test, between the evaluation results of using the neck back prickle test and the upper arm ball prickle test, and between the evaluation results of using the forearm prickle test and the upper arm ball prickle test. It is suggested that the forearm prickle test is preferable in evaluating fabric-evoked prickle for its convenience and sensitivity. 展开更多
关键词 subjective evaluation fabric-evoked prickle rating scale forearm test.
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Modified Multiple Scale/Segment Entropy (MMPE) Analysis of Heart Rate Variability of NHH, CHF & AF Subjects
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作者 Chodavarapu Renu Madhavi Alevoor Gopal Krishnachar Ananth 《Journal of Life Sciences》 2011年第8期593-597,共5页
Nonlinear analysis of heart rate variability (HRV) has become important as heart behaves as a complex system. In this work, the approximate entropy (ApEn) has been used as a nonlinear measure. A new concept of est... Nonlinear analysis of heart rate variability (HRV) has become important as heart behaves as a complex system. In this work, the approximate entropy (ApEn) has been used as a nonlinear measure. A new concept of estimating the ApEn in different segments of long length of the recorded data called modified multiple scale (segment) entropy (MMPE) is introduced. The idea of estimating the approximate entropy in different segments is useful to detect the nonlinear dynamics of the heart present in the entire length of data. The present work has been carried out for three cases namely the normal healthy heart (NHH) data, congestive heart failure (CHF) data and Atrial fibrillation (AF) data and the data are analyzed using MMPE techniques. It is observed that the mean value of ApEn for NHH data is much higher than the mean values for CHF data and AF data. The ApEn profiles of CHF, AF and NHH data for different segments obtained using MPE profiles measures the heart dynamism for the three different cases. Also the power spectral density is obtained using fast fourier transform (FFT) analysis and the ratio of LF/HF (low frequency/high frequency) power are computed on multiple scales/segments namely MPLH (multiple scale low frequency to high frequency) for the NHH data, CHF data and AF data and analyzed using MPLH techniques. The results are presented and discussed in the paper. 展开更多
关键词 Multiple scale/segment heart rate variability approximate entropy congestive heart failure atrial fibrillations.
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The laparoscopic rating scale for the evaluation of working conditions for surgical treatment of super-obesity
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作者 Oral Ospanov 《Laparoscopic, Endoscopic and Robotic Surgery》 2023年第2期78-82,共5页
In this technical note,a novel rating scale(abdominal integral index)was introduced for assessing the conditions of the working laparoscopic space based on linear measurements to select the optimal one or two-stage su... In this technical note,a novel rating scale(abdominal integral index)was introduced for assessing the conditions of the working laparoscopic space based on linear measurements to select the optimal one or two-stage surgical treatment for super-obesity.Patients with the same height and similar BMI values had different rating scale scores,reflecting different conditions of laparoscopic bariatric surgery.The rating scale helps surgeons and patients make a safe option for surgery,depending on the experience of the surgeon and technical laparoscopic conditions. 展开更多
关键词 Bariatric surgery Laparoscopic rating scale Surgical working conditions SUPER-OBESITY
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A Glimpse into a Potential Influencing Factor of China’s Exchange Rate: Social Financing Scale
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作者 Weihao Li Zekun Hong 《Journal of Finance Research》 2022年第1期21-28,共8页
The indicator of social financing scale(SFS)has become a new intermediate target for China’s socioeconomic regulation since 2011,which has a better tracking performance on important economic indicators such as CPI an... The indicator of social financing scale(SFS)has become a new intermediate target for China’s socioeconomic regulation since 2011,which has a better tracking performance on important economic indicators such as CPI and is also the new intermediate target of monetary policy used by China’s central bank to replace M2 at present.So,is there an impact of the social financing scale on another important economic indicator,the RMB exchange rate?This paper conducted an OLS regression analysis of the time series data of social financing scale and the nominal effective exchange rate(NEER)of RMB for a total of 61 months from October 2016 to October 2021 and find that SFS has a significant positive impact on the exchange rate of RMB.This result means that the expansion of SFS will lead to the appreciation of RMB.In addition,the paper fills the research gap on the combination of SFS and RMB exchange rate,and suggests that mechanisms such as monetary policy or domestic interest rates may be responsible for this correlation at the theoretical level. 展开更多
关键词 RMB exchange rate Social financing scale Intermediate target
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Experimental investigation and theoretical modeling on scale behaviors of high salinity wastewater in zero liquid discharge process of coal chemical industry 被引量:5
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作者 Kai Lu Yang Lü +4 位作者 Youxiang Bai Jueru Zhang Nanxi Bie Yongsheng Ren Yulong Ma 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2020年第4期969-979,共11页
Zero liquid discharge(ZLD)treatment and reuse equipment of high salinity wastewater in coal-chemical industry often occur in various types of blockage problems because of high salt content,affecting the long-term stab... Zero liquid discharge(ZLD)treatment and reuse equipment of high salinity wastewater in coal-chemical industry often occur in various types of blockage problems because of high salt content,affecting the long-term stability of the device.In this study,the effects of solution temperature,steel,reaction time and wall roughness on fouling were investigated.The changes in the contents of fouling and fouling substances were qualitatively and quantitatively analyzed by XRD and EDS respectively,and the formation of scale was observed by SEM.The results show that with temperature increasing,Q235 steel is the most difficult to scale.Scaling rate of all salt scales reaches a maximum after 12 h,and the fouling rate decreases significantly from 12 to 48 h.It gradually stabilizes at 48 to 96 h.With the roughness increasing,the thickness of fouling layer increases,and a linear relationship is presented for 1 to 10 h.By comparing actual and simulated wastewater scaling rates,the relationship between actual and simulated wastewater scaling rates is y=ax-0.494.The composition of the scale was analyzed,calcium carbonate is the main product and increases with fouling time.Based on the above-mentioned results combining literatures,the hybrid prediction model with calcium carbonate as the main product is put forward.It is discussed microscopically that calcium carbonate is converted from aragonite and vaterite in a thermodynamically metastable state to calcite in a thermodynamically stable state. 展开更多
关键词 SCALING Coal chemical wastewater Fouling rate Scaling model Calcium carbonate
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Predictive Model for Corrosion Rate of Oil Tubes in CO_2/H_2S Coexistent Environment Part Ⅰ: Building of Model 被引量:5
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作者 李全安 白真权 +3 位作者 黄得志 张清 文九巴 李鹤林 《Journal of Southwest Jiaotong University(English Edition)》 2004年第2期141-147,共7页
Based on an analysis of the existing models of CO 2 corrosion in literatures and the autoclave simulative experiments, a predictive model of corrosion rate (r corr) in CO 2/H 2S corrosion for oil tubes has been ... Based on an analysis of the existing models of CO 2 corrosion in literatures and the autoclave simulative experiments, a predictive model of corrosion rate (r corr) in CO 2/H 2S corrosion for oil tubes has been established, in which r corr is expressed as a function of pH, temperature (T), pressure of CO 2 (P CO 2) and pressure of H 2S (P H 2S). The model has been verified by experimental data obtained on N80 steel. The improved features of the predictive model include the following aspects: (1) The influence of temperature on the protectiveness of corrosion film is taken into consideration for establishment of predictive model of the r corr in CO 2/H 2S corrosion. The Equations of scale temperature and scale factor are put forward, and they fit the experimental result very well. (2) The linear relationship still exists between ln r corr and ln P CO 2 in CO 2/H 2S corrosion (as same as that in CO 2 corrosion). Therefore, a correction factor as a function of P H 2S has been introduced into the predictive model in CO 2/H 2S corrosion. (3) The model is compatible with the main existing models. 展开更多
关键词 Predictive model CO 2/H 2S corrosion Corrosion rate scale temperature Oil tube
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Parameterization of Sheared Entrainment in a Well-developed CBL.PartⅡ:A Simple Model for Predicting the Growth Rate of the CBL 被引量:1
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作者 Peng LIU Jianning SUN Lidu SHEN 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2016年第10期1185-1198,共14页
Following the parameterization of sheared entrainment obtained in the companion paper, Liu et al. (2016), the present study aims to further investigate the characteristics of entrainment, and develop a simple model ... Following the parameterization of sheared entrainment obtained in the companion paper, Liu et al. (2016), the present study aims to further investigate the characteristics of entrainment, and develop a simple model for predicting the growth rate of a well-developed and sheared CBL. The relative stratification, defined as the ratio of the stratification in the free atmosphere to that in the entrainment zone, is found to be a function of entrainment flux ratio (Ae). This leads to a simple expression of the entrainment rate, in which Ae needs to be parameterized. According to the results in Liu et al. (2016), Ae can be simply expressed as the ratio of the convective velocity scale in the sheared CBL to that in the shear-free CBL. The parameterization of the convective velocity scale in the sheared CBL is obtained by analytically solving the bulk model with several assumptions and approximations. Results indicate that the entrainment process is influenced by the dynamic effect, the interaction between mean shear and environmental stratification, and one other term that includes the Coriolis effect. These three parameterizations constitute a simple model for predicting the growth rate of a well-developed and sheared CBL. This model is validated by outputs of LESs, and the results show that it performs satisfactorily. Compared with bulk models, this model does not need to solve a set of equations for the CBL. It is more convenient to apply in numerical models. 展开更多
关键词 sheared convective boundary layer relative stratification parameter entrainment rate entrainment flux ratio convective velocity scale
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Changes in Heart Rate Variability and Effects on POMS by Whether or Not Soil Observation Was Performed 被引量:1
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作者 Kazuyo Hanyu Kenji Tamura Hidetoshi Mori 《Open Journal of Soil Science》 2014年第1期36-41,共6页
Introduction: The effects of performing soil observation on autonomic nerve function (ANS) and the profile of mood states (POMS) particularly for upsurge of sentiment were studied table. Methods: The subjects were div... Introduction: The effects of performing soil observation on autonomic nerve function (ANS) and the profile of mood states (POMS) particularly for upsurge of sentiment were studied table. Methods: The subjects were divided into two groups: Group A with soil observation, and Group B without it. Soil observation was performed by smelling soil, touching the soil and other ways. Evaluation was made using heart rate change variability, POMS and visual analog scale (VAS). Results: Group A showed an increase in high frequency (HF) and the LF (low frequency)/HF ratio and a decrease in heart rate, leading to activating the functions of the parasympathetic nervous system. VAS values for “not comforted at all” indicated that the scale was lower in Group A than in Group B. In POMS, a factor of “vigor” became lower in Group B than in Group A. Discussion: It was suggested that soil observation was effective in bringing people to a state of physiological and mental relaxation and reducing stress because it raised the degree of being comforted, increased HF, decreased the heart rate and activated the parasympathetic nervous system. Conclusions: By performing soil observation, the heart rate decreased, HF increased and an upsurge sentiment became normalized. 展开更多
关键词 SOIL OBSERVATION Heart Rate Variability AUTONOMIC Nerve Function Profile of MOOD States (POMS) Visual Analog scale (VAS)
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Detecting dynamical complexity changes in time series using the base-scale entropy 被引量:4
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作者 李静 宁新宝 +1 位作者 吴巍 马小飞 《Chinese Physics B》 SCIE EI CAS CSCD 2005年第12期2428-2432,共5页
Timely detection of dynamical complexity changes in natural and man-made systems has deep scientific and practical meanings. We introduce a complexity measure for time series: the base-scale entropy. The definition d... Timely detection of dynamical complexity changes in natural and man-made systems has deep scientific and practical meanings. We introduce a complexity measure for time series: the base-scale entropy. The definition directly applies to arbitrary real-word data. We illustrate our method on a practical speech signal and in a theoretical chaotic system. The results show that the simple and easily calculated measure of base-scale entropy can be effectively used to detect qualitative and quantitative dynamical changes. 展开更多
关键词 dynamical complexity the base-scale entropy the zero-crossing rate Lyapunov exponent
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Revisiting the Curie-Von Schweidler Law for Dielectric Relaxation and Derivation of Distribution Function for Relaxation Rates as Zipf’s Power Law and Manifestation of Fractional Differential Equation for Capacitor 被引量:1
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作者 Shantanu Das 《Journal of Modern Physics》 2017年第12期1988-2012,共25页
The classical power law relaxation, i.e. relaxation of current with inverse of power of time for a step-voltage excitation to dielectric—as popularly known as Curie-von Schweidler law is empirically derived and is ob... The classical power law relaxation, i.e. relaxation of current with inverse of power of time for a step-voltage excitation to dielectric—as popularly known as Curie-von Schweidler law is empirically derived and is observed in several relaxation experiments on various dielectrics studies since late 19th Century. This relaxation law is also regarded as “universal-law” for dielectric relaxations;and is also termed as power law. This empirical Curie-von Schewidler relaxation law is then used to derive fractional differential equations describing constituent expression for capacitor. In this paper, we give simple mathematical treatment to derive the distribution of relaxation rates of this Curie-von Schweidler law, and show that the relaxation rate follows Zipf’s power law distribution. We also show the method developed here give Zipfian power law distribution for relaxing time constants. Then we will show however mathematically correct this may be, but physical interpretation from the obtained time constants distribution are contradictory to the Zipfian rate relaxation distribution. In this paper, we develop possible explanation that as to why Zipfian distribution of relaxation rates appears for Curie-von Schweidler Law, and relate this law to time variant rate of relaxation. In this paper, we derive appearance of fractional derivative while using Zipfian power law distribution that gives notion of scale dependent relaxation rate function for Curie-von Schweidler relaxation phenomena. This paper gives analytical approach to get insight of a non-Debye relaxation and gives a new treatment to especially much used empirical Curie-von Schweidler (universal) relaxation law. 展开更多
关键词 Power LAW RELAXATION RATE Distribution FRACTIONAL Derivative FRACTIONAL Integration Curie-Von Schweidler LAW Time-Constants Laplace INTEGRAL Zipf’s LAW INTEGRAL Representation Time Dependent RELAXATION RATE scale Dependent RELAXATION RATE Non-Debye RELAXATION
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EXPERIMENTAL STUDY OF MEASUREMENT FOR DISSIPATION RATE SCALING EXPONENT IN HEATED WALL TURBULENCE
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作者 姜楠 王玉春 +1 位作者 舒玮 王振东 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2002年第9期1035-1044,共10页
Experimental investigations have been devoted to the study of scaling law of coarse-grained dissipation rate structure function for velocity and temperature fluctuation of non-isotropic and inhomogeneous turbulent flo... Experimental investigations have been devoted to the study of scaling law of coarse-grained dissipation rate structure function for velocity and temperature fluctuation of non-isotropic and inhomogeneous turbulent flows at moderate Reynolds number. Much attention has been paid to the case of turbulent boundary layer, which is typically the non-istropic and inhomogeneous trubulence because of the dynamically important existence of organized coherent structure burst process in the near wall region . Longitudinal velocity and temperature have been measured at different vertical positions in turbulent boundary layer over a heated and unheated flat plate in a wind tunnel using hot wire anemometer. The influence of non-isotropy and inhomogeneity and heating the wall on the scaling law of the dissipation rate structure function is studied because of the existence of organized coherent structure burst process in the near wall region . The scaling law of coarse-grained dissipation rate structure function is foun 展开更多
关键词 HEATING wall turbulence dissipation rate scaling law hierarchical structure model
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