BACKGROUND Although rectal prolapse is not a life-threatening condition,it can cause defecation disorders,anal incontinence,sensory abnormalities,and other problems that can seriously affect quality of life.AIM To stu...BACKGROUND Although rectal prolapse is not a life-threatening condition,it can cause defecation disorders,anal incontinence,sensory abnormalities,and other problems that can seriously affect quality of life.AIM To study the efficacy of the modified Gant procedure for elderly women with internal rectal prolapse.METHODS Sixty-three elderly female patients with internal rectal prolapse underwent the modified Gant procedure.The preoperative and postoperative anal symptoms,Patient Assessment of Constipation Quality of Life(PAC-QOL),Wexner incontinence score,incontinence quality of life score,and complications(massive hemorrhage,infection,anorectal stenosis,and anorectal fistula)were compared.RESULTS The improvement rates of postoperative symptoms were defecation disorders(84.5%),anal distention(69.6%),defecation sensation(81.4%),frequent defecation(88.7%),and anal incontinence(42.9%)(P<0.05).All dimensions and total scores of the PAC-QOL after the procedure were lower than those before the operation(P<0.05).The postoperative anal incontinence score and Wexner score were significantly lower than those before the procedure(P<0.05).The quality of life and total scores of postoperative anal incontinence were significantly higher than those before the procedure(P<0.05).There were no serious complications and no deaths.CONCLUSION The modified Gant procedure has significant advantages in the treatment of elderly women with internal rectal prolapse.展开更多
Rationale: Webbed scar contractures deformity caused by burns and other factors will lead to joint disorders and affect the mental health of patients, resulting in a severe decline in quality of life. Rapid, effective...Rationale: Webbed scar contractures deformity caused by burns and other factors will lead to joint disorders and affect the mental health of patients, resulting in a severe decline in quality of life. Rapid, effective and less complicated surgical methods can help patients with post-burn rehabilitation. Objective: This article argues that a modified Z-plasty can quickly improve the range of motion caused by webbed scar contractures in joint areas, including surgical methods, postoperative care and prognosis. Methods and Results: The study took place from 2018 to 2022. Thirty-two patients with joint scar contracture deformity, with a mean age of 32.5 years, were included in the study. All patients underwent contracture scar revision and modified Z-plasty repair under anesthesia. All the flaps survived and the joint function was improved. Compared with the traditional Z-plasty, the duration of the operative procedure of the modified Z-plasty was significantly shorter, more surrounding scar tissue was mobilized, and the effectiveness of postoperative scar contracture release was better. Discussions: The modified Z-plasty for scar contracture deformity in joint area is simple, rapid, effective and easy to manage.展开更多
We develop a modified two-step method of growing high-density and narrow size-distribution InAs/GaAs quantum dots （QDs） by molecular beam epitaxy. In the first step, high-density small InAs QDs are formed by optimiz...We develop a modified two-step method of growing high-density and narrow size-distribution InAs/GaAs quantum dots （QDs） by molecular beam epitaxy. In the first step, high-density small InAs QDs are formed by optimizing the continuous deposition amount. In the second step, deposition is carried out with a long growth interruption for every 0.1 InAs monolayer. Atomic force microscope images show that the high-density （～5.9 × 10^11 cm^-2） good size-uniformity InAs QDs are achieved. The strong intensity and narrow linewidth （27.7 meV） of the photoluminescence spectrum show that the QDs grown in this two-step method have a good optical quality.展开更多
A method is proposed to estimate the seismic soil-structure-interaction （SSI） effects for use in engineering practice. It is applicable to 2D structures subjected to vertically incident shear waves supported by homo...A method is proposed to estimate the seismic soil-structure-interaction （SSI） effects for use in engineering practice. It is applicable to 2D structures subjected to vertically incident shear waves supported by homogenous half-spaces. The method is attractive since it keeps the simplicity of the spectral approach, overcomes some of the difficulties and inaccuracies of existing classical techniques and yet it considers a physically consistent excitation. This level of simplicity is achieved through a response spectra modification factor that can be applied to the free-field 5%-damped response spectra to yield design spectral ordinates that take into account the scattered motions introduced by the interaction effects. The modification factor is representative of the Transfer Function （TF） between the structural relative displacements and the free- field motion, which is described in terms of its maximum amplitude and associated frequency. Expressions to compute the modification factor by practicing engineers are proposed based upon a parametric study using 576 cases representative of actual structures. The method is tested in 10 cases spanning a wide range of common fundamental vibration periods.展开更多
NaBH4 sodalites were obtained by two new modified methods of crystallization: (1) autothermal synthesis and (2) crystallization with crossover from gel to melt flow in NaOH flux. Syntheses results were presented accor...NaBH4 sodalites were obtained by two new modified methods of crystallization: (1) autothermal synthesis and (2) crystallization with crossover from gel to melt flow in NaOH flux. Syntheses results were presented according to XRD, SEM and FTIR. Besides important features of both synthesis procedures product properties like crystal size and morphology were investigated. Spherical agglomerates of microcrystalline sodalite of composition Na7[AlSiO4]6BH4(H2O)2 were already observed after 4 h without any external heating by the autothermal procedure. Sodalites of the same average composition but in form of agglomerated nanoparticles are crystallized after very short times (2 h 30’) by the crossover reaction from gel to melt flow. Hydrogen release by heating was further studied for two selected samples with comparable composition from each synthesis procedure. Total hydrogen release by hydrolysis reaction with the internal cage water was found during heating of the autothermal product in synthetic air up to 550°C. In contrast hydrogen release from the nanocrystalline sample of crossover synthesis was not completed when heated under the same conditions. These differences were discussed in terms of crystal size and an earlier loss of the internal water from the nanocrystals of the crossover展开更多
目的探讨基于改良Peyton四步教学法的模拟教学联合操作技能直接观察(direct observation of procedural skills,DOPS)评估方法在西藏临床技能培训中的应用效果。方法选取西藏边坝县人民医院2021年5月—2022年5月参加临床技能培训的51名...目的探讨基于改良Peyton四步教学法的模拟教学联合操作技能直接观察(direct observation of procedural skills,DOPS)评估方法在西藏临床技能培训中的应用效果。方法选取西藏边坝县人民医院2021年5月—2022年5月参加临床技能培训的51名医护人员为研究对象,随机分为试验组与对照组。试验组采用结合改良Peyton四步教学法进行成人男性导尿术教学,并在培训开始前、培训中期及培训结束后,由带教教师采用DOPS评估方法对学员进行测评。对照组采用传统临床技能培训方法进行教学。在培训结束后发放满意度调查问卷,以了解学员对该教学模式的满意度。结果试验组技能考核平均成绩(90.12±5.50)分,对照组技能考核平均成绩(79.36±6.95)分,两组间成绩比较,其差异具有统计学意义(P<0.001);DOPS评估量表显示,试验组学员在培训结束后临床操作各项能力均较前有显著提高,其差异均具有统计学意义(P<0.05);课后满意度调查结果显示,在赞同“增强相关基础知识”等6个方面,试验组与对照组比较,其差异均具有统计学意义(P<0.001)。结论基于改良Peyton四步教学法的模拟教学联合DOPS评估方法的教学模式可提高西藏藏区医护人员的临床技能操作水平,适合在藏区医护人员临床技能培训中推广。展开更多
基金Jinan Health Commission Science and Technology Project,No.2019-1-61.
文摘BACKGROUND Although rectal prolapse is not a life-threatening condition,it can cause defecation disorders,anal incontinence,sensory abnormalities,and other problems that can seriously affect quality of life.AIM To study the efficacy of the modified Gant procedure for elderly women with internal rectal prolapse.METHODS Sixty-three elderly female patients with internal rectal prolapse underwent the modified Gant procedure.The preoperative and postoperative anal symptoms,Patient Assessment of Constipation Quality of Life(PAC-QOL),Wexner incontinence score,incontinence quality of life score,and complications(massive hemorrhage,infection,anorectal stenosis,and anorectal fistula)were compared.RESULTS The improvement rates of postoperative symptoms were defecation disorders(84.5%),anal distention(69.6%),defecation sensation(81.4%),frequent defecation(88.7%),and anal incontinence(42.9%)(P<0.05).All dimensions and total scores of the PAC-QOL after the procedure were lower than those before the operation(P<0.05).The postoperative anal incontinence score and Wexner score were significantly lower than those before the procedure(P<0.05).The quality of life and total scores of postoperative anal incontinence were significantly higher than those before the procedure(P<0.05).There were no serious complications and no deaths.CONCLUSION The modified Gant procedure has significant advantages in the treatment of elderly women with internal rectal prolapse.
文摘Rationale: Webbed scar contractures deformity caused by burns and other factors will lead to joint disorders and affect the mental health of patients, resulting in a severe decline in quality of life. Rapid, effective and less complicated surgical methods can help patients with post-burn rehabilitation. Objective: This article argues that a modified Z-plasty can quickly improve the range of motion caused by webbed scar contractures in joint areas, including surgical methods, postoperative care and prognosis. Methods and Results: The study took place from 2018 to 2022. Thirty-two patients with joint scar contracture deformity, with a mean age of 32.5 years, were included in the study. All patients underwent contracture scar revision and modified Z-plasty repair under anesthesia. All the flaps survived and the joint function was improved. Compared with the traditional Z-plasty, the duration of the operative procedure of the modified Z-plasty was significantly shorter, more surrounding scar tissue was mobilized, and the effectiveness of postoperative scar contracture release was better. Discussions: The modified Z-plasty for scar contracture deformity in joint area is simple, rapid, effective and easy to manage.
基金Project supported by the National Natural Science Foundation of China (Grant No 60625405)the Special Foundation forState Major Basic Research Program of China (Grant No 2006CB921504)
文摘We develop a modified two-step method of growing high-density and narrow size-distribution InAs/GaAs quantum dots （QDs） by molecular beam epitaxy. In the first step, high-density small InAs QDs are formed by optimizing the continuous deposition amount. In the second step, deposition is carried out with a long growth interruption for every 0.1 InAs monolayer. Atomic force microscope images show that the high-density （～5.9 × 10^11 cm^-2） good size-uniformity InAs QDs are achieved. The strong intensity and narrow linewidth （27.7 meV） of the photoluminescence spectrum show that the QDs grown in this two-step method have a good optical quality.
基金"Investigaciones Geotecnicas Solingral S.A"Departamento Administrativo de Ciencia,Tecnología e Innovación,COLCIENCIAS and from Universidad EAFIT through Research Grant No.1216-403-20372
文摘A method is proposed to estimate the seismic soil-structure-interaction （SSI） effects for use in engineering practice. It is applicable to 2D structures subjected to vertically incident shear waves supported by homogenous half-spaces. The method is attractive since it keeps the simplicity of the spectral approach, overcomes some of the difficulties and inaccuracies of existing classical techniques and yet it considers a physically consistent excitation. This level of simplicity is achieved through a response spectra modification factor that can be applied to the free-field 5%-damped response spectra to yield design spectral ordinates that take into account the scattered motions introduced by the interaction effects. The modification factor is representative of the Transfer Function （TF） between the structural relative displacements and the free- field motion, which is described in terms of its maximum amplitude and associated frequency. Expressions to compute the modification factor by practicing engineers are proposed based upon a parametric study using 576 cases representative of actual structures. The method is tested in 10 cases spanning a wide range of common fundamental vibration periods.
文摘NaBH4 sodalites were obtained by two new modified methods of crystallization: (1) autothermal synthesis and (2) crystallization with crossover from gel to melt flow in NaOH flux. Syntheses results were presented according to XRD, SEM and FTIR. Besides important features of both synthesis procedures product properties like crystal size and morphology were investigated. Spherical agglomerates of microcrystalline sodalite of composition Na7[AlSiO4]6BH4(H2O)2 were already observed after 4 h without any external heating by the autothermal procedure. Sodalites of the same average composition but in form of agglomerated nanoparticles are crystallized after very short times (2 h 30’) by the crossover reaction from gel to melt flow. Hydrogen release by heating was further studied for two selected samples with comparable composition from each synthesis procedure. Total hydrogen release by hydrolysis reaction with the internal cage water was found during heating of the autothermal product in synthetic air up to 550°C. In contrast hydrogen release from the nanocrystalline sample of crossover synthesis was not completed when heated under the same conditions. These differences were discussed in terms of crystal size and an earlier loss of the internal water from the nanocrystals of the crossover
文摘目的探讨基于改良Peyton四步教学法的模拟教学联合操作技能直接观察(direct observation of procedural skills,DOPS)评估方法在西藏临床技能培训中的应用效果。方法选取西藏边坝县人民医院2021年5月—2022年5月参加临床技能培训的51名医护人员为研究对象,随机分为试验组与对照组。试验组采用结合改良Peyton四步教学法进行成人男性导尿术教学,并在培训开始前、培训中期及培训结束后,由带教教师采用DOPS评估方法对学员进行测评。对照组采用传统临床技能培训方法进行教学。在培训结束后发放满意度调查问卷,以了解学员对该教学模式的满意度。结果试验组技能考核平均成绩(90.12±5.50)分,对照组技能考核平均成绩(79.36±6.95)分,两组间成绩比较,其差异具有统计学意义(P<0.001);DOPS评估量表显示,试验组学员在培训结束后临床操作各项能力均较前有显著提高,其差异均具有统计学意义(P<0.05);课后满意度调查结果显示,在赞同“增强相关基础知识”等6个方面,试验组与对照组比较,其差异均具有统计学意义(P<0.001)。结论基于改良Peyton四步教学法的模拟教学联合DOPS评估方法的教学模式可提高西藏藏区医护人员的临床技能操作水平,适合在藏区医护人员临床技能培训中推广。
