The aim of this lab is to determine an experimental value for the local acceleration due to gravity. In order to do this, a cart was released down a track and allowed to pass through two photogates recording the entra...The aim of this lab is to determine an experimental value for the local acceleration due to gravity. In order to do this, a cart was released down a track and allowed to pass through two photogates recording the entrance and exit times of the cart. These times along with the length of a light blocking strip on the cart, were used to calculate the acceleration of the cart down the track at various angles, and through linearization, the experimental value for the local acceleration due to gravity was determined to be 10.027 ± 0.312 m/s<sup>2</sup>. This value has a percent error of only 2.2% from the accepted value of 9.8 m/s<sup>2</sup>, which proves that this method of determining local acceleration due to gravity can be effective and accurate. Additionally, this experimental value shows how similar the approximation is to the accepted value.展开更多
Dear Editor,We present the first reported case of nasal optic disc pit resulting in serous detachment of the macula. Optic disc pit is a rare congenital anomaly occurring in one out of 11 000 people. The appearance is...Dear Editor,We present the first reported case of nasal optic disc pit resulting in serous detachment of the macula. Optic disc pit is a rare congenital anomaly occurring in one out of 11 000 people. The appearance is a localized round or oval depression in that is grey, yellow or black in colour depending on the amount of glial tissue present.展开更多
Acupoint-injection of Viamine B12 was used for treatment of 63 cases of hypogalactia due to deficiency of qi and blood. As a result, 56 cases were cured, accounting for 88. 9%, 5 cases were remarkedly effective, accou...Acupoint-injection of Viamine B12 was used for treatment of 63 cases of hypogalactia due to deficiency of qi and blood. As a result, 56 cases were cured, accounting for 88. 9%, 5 cases were remarkedly effective, accounting for 7. 9% and 2 cases were ineffective. The total effective rate was 96. 8 %展开更多
In this paper, we give a mathematical model for earliness-tardiness job scheduling problem with a common due window on parallel and non-identical machines. Because the job scheduling problem discussed in the paper con...In this paper, we give a mathematical model for earliness-tardiness job scheduling problem with a common due window on parallel and non-identical machines. Because the job scheduling problem discussed in the paper contains a problem of minimizing make-span, which is NP-complete on parallel and uniform machines, a heuristic algorithm is presented to find an approximate solution for the scheduling problem after proving an important theorem. Two numerical examples illustrate that the heuristic algorithm is very useful and effective in obtaining the near-optimal solution.展开更多
A single machine scheduling problem involving fuzzy due dates and fuzzy precedence constraints is investigated. The fuzzy precedence reflects the satisfaction level with respect to precedence between two jobs. A membe...A single machine scheduling problem involving fuzzy due dates and fuzzy precedence constraints is investigated. The fuzzy precedence reflects the satisfaction level with respect to precedence between two jobs. A membership function is associated with each job Ji, which describes the degree of satisfaction with respect to completion time of Ji. For the bi-criteria scheduling problem, an 0 （ n^3 ） algorithm is proposed for finding nondominated solutions.展开更多
Some dominance rules are proposed for the problems of scheduling N jobs on a single machine with due dates, sequence dependent setup times and no preemption. Two algorithms based on Ragatz＇ s branch and bound scheme ...Some dominance rules are proposed for the problems of scheduling N jobs on a single machine with due dates, sequence dependent setup times and no preemption. Two algorithms based on Ragatz＇ s branch and bound scheme are developed including the dominance rules where the objective is to minimize the maximum tardiness or the total tardiness. Computational experiments demonstrate the effectiveness of the dominance rules.展开更多
In order to evaluate the tendency of mechanical properties degrudation due to weld-ing and other processing in materials used for supporting coils in super conducting rnaguets utilized in thermonuclear jusion reactore...In order to evaluate the tendency of mechanical properties degrudation due to weld-ing and other processing in materials used for supporting coils in super conducting rnaguets utilized in thermonuclear jusion reactore, a small punch (SP) test was used.This test, which was originally developed to study irradiation damage using miniatursized specimens was performed at 77 and 4 K for solution treated and sensitized JN1 austenitic stainless steel, a candidate cryogenic structural material. The area under the load-deflection curve up to the maximum applied load in SP test was defined as the SP enerpy, to characterize the resistance to fracture. Although solution treated material exhibited ductile fracture mode with high SP enerpy, embrittlement behavior due to sensitization at 650-800°for 1-5 h was shown clearlg by SP test with brittle intergranular fracture and decreased SP enerpy. Comparison of the results obtained by SP test with those by fracture toughness test showed the usefulness of SP test for evaluation of sensitization induced embrittlement at cryogenic temperature. The re-sults obtained in this study can be very usefol in predicting the degradation due to welding and other processing in cryogenic materials.展开更多
INTRODUCTION Synthetic cannabinoids are increasingly used all over the world as marijuana substitutes. They have various names such as spice and bonzai in different countries. Cardiovascular or cerebrovascular events ...INTRODUCTION Synthetic cannabinoids are increasingly used all over the world as marijuana substitutes. They have various names such as spice and bonzai in different countries. Cardiovascular or cerebrovascular events associated with cocaine, heroin and amphetamine abuse have been frequently reported. However, stroke associated with the synthetic cannabinoids use is rarely reported. There are only a few case reports in association with synthetic cannabinoids use. Bernson-Leung et al described 2 cases that introduce a previously unreported association between synthetic cannabinoids use and ischemic stroke in young adults. Here, we report two patients with stroke that occured shortly after synthetic cannabinoids use.展开更多
In this study, a simple Arduino-based experiment was designed to examine the acceleration of the object during free fall and to calculate the value of “g” (acceleration due to gravity). Experimental data on the free...In this study, a simple Arduino-based experiment was designed to examine the acceleration of the object during free fall and to calculate the value of “g” (acceleration due to gravity). Experimental data on the free fall of a plastic box through the air was gathered with the help of an ultrasonic distance sensor (HC-SR04). Readings were taken at different intervals during the fall to obtain distance time curves. Acceleration during the free fall was then determined by applying the standard kinematic equations. The shape of the distance-time graphs obtained from the experimental setup was in good agreement with the predicted graphs and the calculated values of g lie within the expected range. After repeated experiments, value of gravitational acceleration was found to be 9.805 m/s2. Hardware and software prepared for the experiment are sufficient to examine movement of ordinary objects during free fall, therefore the experiment can be easily settled in a laboratory for the purpose of learning and teaching.展开更多
Objectives:To explore contrast application on CT and BA in cerebral hemorrhage due to hypertension.Methods: CT and BA were examined in 106 patients with cerebral hemorrhage due to hypertension.Results:The different ch...Objectives:To explore contrast application on CT and BA in cerebral hemorrhage due to hypertension.Methods: CT and BA were examined in 106 patients with cerebral hemorrhage due to hypertension.Results:The different changes of CT and BA were showed in 106 patients with cerebral hemorrhage due to hypertension.Conclusions:There were separately different advantage and shortcoming in CT and BA in diagnosis of cerebral hemorrhage due to hypertension.The value of clinical application of BA was important in cerebral hemorrhage due to hypertension.展开更多
目的万古霉素药物利用评估(drug use evaluation,DUE)标准的建立及其应用。方法通过DUE标准基本框架的构建,结合专家咨询法和参考国内外万古霉素临床应用指南,建立万古霉素DUE标准,设计数据收集表收集某三甲医院万古霉素使用病例资料,...目的万古霉素药物利用评估(drug use evaluation,DUE)标准的建立及其应用。方法通过DUE标准基本框架的构建,结合专家咨询法和参考国内外万古霉素临床应用指南,建立万古霉素DUE标准,设计数据收集表收集某三甲医院万古霉素使用病例资料,评估该药物使用情况。结果DUE标准基本框架涵盖了医、药、护三方对药物治疗过程和用药结果的责任;通过实施DUE程序,可以发现万古霉素应用好的方面和不理想的地方。结论通过开展DUE研究,有助于促进临床药学的发展和提高药物的临床应用水平,使药物应用更加经济、合理、规范化。展开更多
目的探讨黄芪桂枝五物汤加味联合中频脉冲电刺激治疗糖尿病合并脑卒中偏瘫的临床疗效。方法选取2019年4月—2022年3月河北北方学院附属第一医院康复科及内分泌科老年糖尿病合并脑卒中偏瘫患者120例,依据随机表分为对照组60例和治疗组60...目的探讨黄芪桂枝五物汤加味联合中频脉冲电刺激治疗糖尿病合并脑卒中偏瘫的临床疗效。方法选取2019年4月—2022年3月河北北方学院附属第一医院康复科及内分泌科老年糖尿病合并脑卒中偏瘫患者120例,依据随机表分为对照组60例和治疗组60例,对照组给予中频脉冲电刺激加常规康复运动疗法,治疗组在对照组基础上给予黄芪桂枝五物汤加味治疗,比较两组患者治疗前后血糖水平、运动神经电生理指标[运动诱发电位潜伏期(motor evoked potentials,MEP)、中枢运动传导时间(central motor conduction time,CMCT)]、运动功能[Fugl-Meyer运动功能评分(Fugl-Meyer Assessment,FMA)]、生活质量及神经功能相关评分[脑卒中专用生活质量量表(Stroke Specific Quality of Life Scale,SS-QOL)、改良Barthel指数(modified Barthel Index,MBI)、美国国立卫生研究所卒中评分量表(National Institutes of Health Stroke Scale,NIHSS)、临床神经功能缺损评分(China Stroke Scale,CSS)量表、抑郁自评量表(Self-Rating Depression Scale,SDS)]。结果(1)血糖水平:治疗12周后,治疗组和对照组空腹血糖和餐后血糖均有所下降,降血糖效果明显;与对照组比较,治疗组血糖水平下降幅度更大(P<0.05)。(2)运动神经电生理指标:两组各项指标(MEP、CMCT)较治疗前均明显降低(P<0.05),且治疗组与对照组比较,治疗组降低幅度更大(P<0.05)。(3)上肢、下肢FMA评分:治疗12周后,对照组和治疗组评分均有明显升高,且治疗组分值提升显著高于对照组(P<0.05)。(4)生活质量评分:治疗后,对照组和治疗组各项评分(SS-QOL、MBI)均明显高于治疗前,且治疗组得分上升幅度显著优于对照组(P<0.05)。(5)神经功能评分:治疗后,两组各项评分(NIHSS、CSS、SDS)均有明显降低(P<0.05),且治疗组比对照组各项评分降低幅度更为显著(P<0.05)。结论黄芪桂枝五物汤加味联合中频脉冲电刺激可有效治疗糖尿病合并脑卒中偏瘫患者的运动功能,有利于改善生活质量,值得临床推广。展开更多
文摘The aim of this lab is to determine an experimental value for the local acceleration due to gravity. In order to do this, a cart was released down a track and allowed to pass through two photogates recording the entrance and exit times of the cart. These times along with the length of a light blocking strip on the cart, were used to calculate the acceleration of the cart down the track at various angles, and through linearization, the experimental value for the local acceleration due to gravity was determined to be 10.027 ± 0.312 m/s<sup>2</sup>. This value has a percent error of only 2.2% from the accepted value of 9.8 m/s<sup>2</sup>, which proves that this method of determining local acceleration due to gravity can be effective and accurate. Additionally, this experimental value shows how similar the approximation is to the accepted value.
文摘Dear Editor,We present the first reported case of nasal optic disc pit resulting in serous detachment of the macula. Optic disc pit is a rare congenital anomaly occurring in one out of 11 000 people. The appearance is a localized round or oval depression in that is grey, yellow or black in colour depending on the amount of glial tissue present.
文摘Acupoint-injection of Viamine B12 was used for treatment of 63 cases of hypogalactia due to deficiency of qi and blood. As a result, 56 cases were cured, accounting for 88. 9%, 5 cases were remarkedly effective, accounting for 7. 9% and 2 cases were ineffective. The total effective rate was 96. 8 %
基金Zhejiang Provincial Natural Science Foundation (No. 698069) and High-Tech. Research andDevelopment Program (No. 863-511-945-002)
文摘In this paper, we give a mathematical model for earliness-tardiness job scheduling problem with a common due window on parallel and non-identical machines. Because the job scheduling problem discussed in the paper contains a problem of minimizing make-span, which is NP-complete on parallel and uniform machines, a heuristic algorithm is presented to find an approximate solution for the scheduling problem after proving an important theorem. Two numerical examples illustrate that the heuristic algorithm is very useful and effective in obtaining the near-optimal solution.
文摘A single machine scheduling problem involving fuzzy due dates and fuzzy precedence constraints is investigated. The fuzzy precedence reflects the satisfaction level with respect to precedence between two jobs. A membership function is associated with each job Ji, which describes the degree of satisfaction with respect to completion time of Ji. For the bi-criteria scheduling problem, an 0 （ n^3 ） algorithm is proposed for finding nondominated solutions.
文摘Some dominance rules are proposed for the problems of scheduling N jobs on a single machine with due dates, sequence dependent setup times and no preemption. Two algorithms based on Ragatz＇ s branch and bound scheme are developed including the dominance rules where the objective is to minimize the maximum tardiness or the total tardiness. Computational experiments demonstrate the effectiveness of the dominance rules.
文摘In order to evaluate the tendency of mechanical properties degrudation due to weld-ing and other processing in materials used for supporting coils in super conducting rnaguets utilized in thermonuclear jusion reactore, a small punch (SP) test was used.This test, which was originally developed to study irradiation damage using miniatursized specimens was performed at 77 and 4 K for solution treated and sensitized JN1 austenitic stainless steel, a candidate cryogenic structural material. The area under the load-deflection curve up to the maximum applied load in SP test was defined as the SP enerpy, to characterize the resistance to fracture. Although solution treated material exhibited ductile fracture mode with high SP enerpy, embrittlement behavior due to sensitization at 650-800°for 1-5 h was shown clearlg by SP test with brittle intergranular fracture and decreased SP enerpy. Comparison of the results obtained by SP test with those by fracture toughness test showed the usefulness of SP test for evaluation of sensitization induced embrittlement at cryogenic temperature. The re-sults obtained in this study can be very usefol in predicting the degradation due to welding and other processing in cryogenic materials.
文摘INTRODUCTION Synthetic cannabinoids are increasingly used all over the world as marijuana substitutes. They have various names such as spice and bonzai in different countries. Cardiovascular or cerebrovascular events associated with cocaine, heroin and amphetamine abuse have been frequently reported. However, stroke associated with the synthetic cannabinoids use is rarely reported. There are only a few case reports in association with synthetic cannabinoids use. Bernson-Leung et al described 2 cases that introduce a previously unreported association between synthetic cannabinoids use and ischemic stroke in young adults. Here, we report two patients with stroke that occured shortly after synthetic cannabinoids use.
文摘In this study, a simple Arduino-based experiment was designed to examine the acceleration of the object during free fall and to calculate the value of “g” (acceleration due to gravity). Experimental data on the free fall of a plastic box through the air was gathered with the help of an ultrasonic distance sensor (HC-SR04). Readings were taken at different intervals during the fall to obtain distance time curves. Acceleration during the free fall was then determined by applying the standard kinematic equations. The shape of the distance-time graphs obtained from the experimental setup was in good agreement with the predicted graphs and the calculated values of g lie within the expected range. After repeated experiments, value of gravitational acceleration was found to be 9.805 m/s2. Hardware and software prepared for the experiment are sufficient to examine movement of ordinary objects during free fall, therefore the experiment can be easily settled in a laboratory for the purpose of learning and teaching.
文摘Objectives:To explore contrast application on CT and BA in cerebral hemorrhage due to hypertension.Methods: CT and BA were examined in 106 patients with cerebral hemorrhage due to hypertension.Results:The different changes of CT and BA were showed in 106 patients with cerebral hemorrhage due to hypertension.Conclusions:There were separately different advantage and shortcoming in CT and BA in diagnosis of cerebral hemorrhage due to hypertension.The value of clinical application of BA was important in cerebral hemorrhage due to hypertension.
文摘目的万古霉素药物利用评估(drug use evaluation,DUE)标准的建立及其应用。方法通过DUE标准基本框架的构建,结合专家咨询法和参考国内外万古霉素临床应用指南,建立万古霉素DUE标准,设计数据收集表收集某三甲医院万古霉素使用病例资料,评估该药物使用情况。结果DUE标准基本框架涵盖了医、药、护三方对药物治疗过程和用药结果的责任;通过实施DUE程序,可以发现万古霉素应用好的方面和不理想的地方。结论通过开展DUE研究,有助于促进临床药学的发展和提高药物的临床应用水平,使药物应用更加经济、合理、规范化。
文摘目的探讨黄芪桂枝五物汤加味联合中频脉冲电刺激治疗糖尿病合并脑卒中偏瘫的临床疗效。方法选取2019年4月—2022年3月河北北方学院附属第一医院康复科及内分泌科老年糖尿病合并脑卒中偏瘫患者120例,依据随机表分为对照组60例和治疗组60例,对照组给予中频脉冲电刺激加常规康复运动疗法,治疗组在对照组基础上给予黄芪桂枝五物汤加味治疗,比较两组患者治疗前后血糖水平、运动神经电生理指标[运动诱发电位潜伏期(motor evoked potentials,MEP)、中枢运动传导时间(central motor conduction time,CMCT)]、运动功能[Fugl-Meyer运动功能评分(Fugl-Meyer Assessment,FMA)]、生活质量及神经功能相关评分[脑卒中专用生活质量量表(Stroke Specific Quality of Life Scale,SS-QOL)、改良Barthel指数(modified Barthel Index,MBI)、美国国立卫生研究所卒中评分量表(National Institutes of Health Stroke Scale,NIHSS)、临床神经功能缺损评分(China Stroke Scale,CSS)量表、抑郁自评量表(Self-Rating Depression Scale,SDS)]。结果(1)血糖水平:治疗12周后,治疗组和对照组空腹血糖和餐后血糖均有所下降,降血糖效果明显;与对照组比较,治疗组血糖水平下降幅度更大(P<0.05)。(2)运动神经电生理指标:两组各项指标(MEP、CMCT)较治疗前均明显降低(P<0.05),且治疗组与对照组比较,治疗组降低幅度更大(P<0.05)。(3)上肢、下肢FMA评分:治疗12周后,对照组和治疗组评分均有明显升高,且治疗组分值提升显著高于对照组(P<0.05)。(4)生活质量评分:治疗后,对照组和治疗组各项评分(SS-QOL、MBI)均明显高于治疗前,且治疗组得分上升幅度显著优于对照组(P<0.05)。(5)神经功能评分:治疗后,两组各项评分(NIHSS、CSS、SDS)均有明显降低(P<0.05),且治疗组比对照组各项评分降低幅度更为显著(P<0.05)。结论黄芪桂枝五物汤加味联合中频脉冲电刺激可有效治疗糖尿病合并脑卒中偏瘫患者的运动功能,有利于改善生活质量,值得临床推广。
