The photoluminescence （PL） and Raman spectra of undoped ZnO films deposited directly on Si substrate （sample A）,on Si substrate through a SiC buffer layer （sample B）,and on a ZnO crystal wafer （sample C） are i...The photoluminescence （PL） and Raman spectra of undoped ZnO films deposited directly on Si substrate （sample A）,on Si substrate through a SiC buffer layer （sample B）,and on a ZnO crystal wafer （sample C） are investigated. There are emission peaks centered at 3.18eV （ultraviolet,UV） and 2.38eV （green） in these sampies. Comparing the Raman spectra and the variation of the PL peak intensities with annealing atmosphere, we conclude that the luminescence of the samples is related to the tensile strain in the ZnO film due to the lattice mismatch between the film and the substrate. In particular, the tensile strain reduces the formation energy of OZn antisite oxygen defects,which generate the green emission center. After annealing in oxygen-rich atmosphere, many OZn defects are generated. Thus, the intensity of green emission in ZnO/Si hetero-structure materials increases due to tensile strain in ZnO films.展开更多
Objective To evaluate efficacy and safety of botulinum toxin type B (BTX-B) in treatment of movement disorders including blepharospasm, oromandibular dystonia, hemifacial spasm, tremor, tics, and hypersecretory disord...Objective To evaluate efficacy and safety of botulinum toxin type B (BTX-B) in treatment of movement disorders including blepharospasm, oromandibular dystonia, hemifacial spasm, tremor, tics, and hypersecretory disorders such as sia-lorrhea and hyperhidrosis. Methods A retrospective study of BTX-B injections in treatment of 58 patients with various neurological disorders was performed. The mean follow-up time was 0.9 ± 0.8 years. Results of the first and last treatment of patients with at least 3 injection sessions were compared. Results The response of 58 patients to a total of 157 BTX-B treatment sessions was analyzed. Of the 157 treatment sessions, 120 sessions (76.4%) resulted in moderate or marked improvement while 17 sessions (10.8%) had no response. The clinical benefits after BTX-B treatment lasted an average of 14 weeks. Of the 41 patients with at least 3 injection ses-sions (mean 10 ± 8.6), most patients needed increased dosage upon the last session compared to the first session. Nineteen patients (32.8%) with 27 sessions (17.2%) reported adverse effects with BTX-B treatment. Conclusions Though most patients require increased dosage to maintain effective response after repeated injections, BTX-B is an effective and safe treatment drug for a variety of movement disorders, as well as drooling and hyperhidrosis.展开更多
AIM:Achalasia is the best known primary motor disorder of the esophagus in which the lower esophageal sphincter (LES)has abnormally high resting pressure and incomplete relaxation with swallowing.Pneumatic dilatation ...AIM:Achalasia is the best known primary motor disorder of the esophagus in which the lower esophageal sphincter (LES)has abnormally high resting pressure and incomplete relaxation with swallowing.Pneumatic dilatation remains the first choice of treatment.The aims of this study were to determine the long term clinical outcome of treating achatasia initially with pneumatic dilatation and usefulness of pneumatic dilatation technique under endoscopic observation without fluoroscopy. METHODS:A total of 65 dilatations were performed in 43 patients with achalasia[23 males and 20 females,the mean age was 43 years(range,19-73)].All patients underwent an initial dilatation by inflating a 30 mm balloon to 15 psi under endoscopic control.The need for subsequent dilatation was based on symptom assessment.A 3.5 cm balloon was used for repeat procedures. RESULTS:The 30 mm balloon achieved a satisfactory result in 24 patients(54%)and the 35 mm ballon in 78% of the remainder(14/18).Esophageal perforation as a short-term complication was observed in one patient(2.3%).The only late complication encountered was gastroesophageal reflux in 2(4%)patients with a good response to dilatation.The mean follow-up period was 2.4 years(6 mo-5 years).Of the patients studied,38(88%)were relieved of their symptoms after only one or two sessions.Five patients were referred for surgery(one for esophageal perforation and four for persistent or recurrent symptoms).Among the patients whose follow up information was available,the percentage of patients in remission was 79%(19/24)at 1 year and 54%(7/13)at 5 years. CONCLUSION:Performing balloon dilatation under endoscopic observation as an outpatient procedure is simple,safe and efficacious for treating patients with achalasia and referral of surgical myotomy should be considered for patients who do not respond to medical therapy or individuals that do not desire pneumatic dilatations.展开更多
Objective To study the outcome of tension-free vaginal tape (TVT) for the treatment of stress urinary incontinence (SUI) in women with cystocele. Methods Forty-two patients with SUI confirmed by urodynamics underwent ...Objective To study the outcome of tension-free vaginal tape (TVT) for the treatment of stress urinary incontinence (SUI) in women with cystocele. Methods Forty-two patients with SUI confirmed by urodynamics underwent the TVT procedure under local anesthesia. A prolapse repair was done simultaneously. Results Mean TVT operation time was 26.29 minutes. Mean blood loss was 29.86 mL. Eighty-eight percent of the patients were able to micturate spontaneously within 12 hours and residual urine was less than 100 mL. And 12% of the patients had to use indwelling catheter for 3-11 days. Average hospital stay was 2.91 days. Eighty-eight percent of patients were discharged within 2 days. All patients were followed up (an average of 10.26 months). According to subjective and objective assessment of the outcome, 39 patients (93%) were cured, another 3 patients (7%) were significantly improved and none was failed. There were no major complications such as bladder injury occurred. Conclusion TVT procedure is a minimal invasive, effective, and safe surgery for treatment of SUI.展开更多
It is generally accepted that governments favor expansive fiscal policies to address an economic scenario in which supply exceeds demand. In other words, economic imbalance is regarded as the cause of the problem and ...It is generally accepted that governments favor expansive fiscal policies to address an economic scenario in which supply exceeds demand. In other words, economic imbalance is regarded as the cause of the problem and fiscal expansion as the result. However, this paper posits that China＇s expansive fiscal policies may also be a major cause of its economic imbalance, and that fiscal expansion and economic imbalance create cumulative causation. Specifically, China＇s tax system, characterized by a regressive commodity tax, intensifies constraints on domestic consumption while distributing a large proportion of national income to government and enterprises; supply-demand imbalance prompts the government to expand fiscal expenditures and increase taxes, which further exacerbates this imbalance. Thus, even as the country faces a macroeconomic imbalance, the strong measures it adopts in response may stimulate economic growth in the short term, but in the long term, they may do exactly the opposite and create the next economic crisis.展开更多
The structural readjustments and innovations accompanying institutional change have brought about contradictions and conflicts among different interest groups. The many problems thus touched off can be attributed to t...The structural readjustments and innovations accompanying institutional change have brought about contradictions and conflicts among different interest groups. The many problems thus touched off can be attributed to the tensions resulting from ＂structural strain,＂ with ＂anomie＂ a typical structural problem. We have used survey data as a basis for analyzing and examining the relationship between structural strain and anomie. We find that differences and differentiation in social status, organization, role and power structures and in income and educational level structures have indeed led to the birth of a sense of anomie. To a large extent, such negative feelings as individual anomie, dissatisfaction, a sense of relative deprivation, status inconsistency, etc., are nothing other than the result of the imbalances and tensions brought about by an objective structural differentiation that is proceeding faster than institutional integration.展开更多
In May 2012 a seismic sequence occurred in Northern Italy that was characterized by two main shocks with a magnitude range between 5.5 and 6. These shocks represent a good case study by which to quantify the monetary ...In May 2012 a seismic sequence occurred in Northern Italy that was characterized by two main shocks with a magnitude range between 5.5 and 6. These shocks represent a good case study by which to quantify the monetary losses caused by a moderate earthquake in a densely populated and economically well-developed area.The loss estimation accounts for damage to residential buildings, and considers the full effect of all the seismic aftershock events that lasted for nearly a month. The building damage estimation is based on the European Macroseismic Scale(EMS-98) definitions, which depict the effects of an earthquake on built-up areas in terms of observed intensities. Input data sources are the residential building census provided by Istituto Nazionale di Statistica—the Italian National Institute of Statistics(ISTAT)—and the official market value of real estate assets, obtained from the Osservatorio del Mercato Immobiliare—the Real Estate Market Observatory(OMI). These data make it possible to quantify the economic losses due to earthquakes, an economic indicator updated yearly. The proposed multidisciplinary method takes advantage of seismic,engineering, and economic data sets, and is able to provide a reasonable after the event losses scenario. Data are not gathered for each single building and the intensity values are not a simple hazard indicator, but, notwithstanding its coarseness, this method ensures both robust and reproducible results. As the local property value is availablethroughout the Italian territory, the present loss assessment can be effortlessly repeated for any area, and may be quickly reproduced in case of future events, or used for predictive economic estimations.展开更多
文摘The photoluminescence （PL） and Raman spectra of undoped ZnO films deposited directly on Si substrate （sample A）,on Si substrate through a SiC buffer layer （sample B）,and on a ZnO crystal wafer （sample C） are investigated. There are emission peaks centered at 3.18eV （ultraviolet,UV） and 2.38eV （green） in these sampies. Comparing the Raman spectra and the variation of the PL peak intensities with annealing atmosphere, we conclude that the luminescence of the samples is related to the tensile strain in the ZnO film due to the lattice mismatch between the film and the substrate. In particular, the tensile strain reduces the formation energy of OZn antisite oxygen defects,which generate the green emission center. After annealing in oxygen-rich atmosphere, many OZn defects are generated. Thus, the intensity of green emission in ZnO/Si hetero-structure materials increases due to tensile strain in ZnO films.
文摘Objective To evaluate efficacy and safety of botulinum toxin type B (BTX-B) in treatment of movement disorders including blepharospasm, oromandibular dystonia, hemifacial spasm, tremor, tics, and hypersecretory disorders such as sia-lorrhea and hyperhidrosis. Methods A retrospective study of BTX-B injections in treatment of 58 patients with various neurological disorders was performed. The mean follow-up time was 0.9 ± 0.8 years. Results of the first and last treatment of patients with at least 3 injection sessions were compared. Results The response of 58 patients to a total of 157 BTX-B treatment sessions was analyzed. Of the 157 treatment sessions, 120 sessions (76.4%) resulted in moderate or marked improvement while 17 sessions (10.8%) had no response. The clinical benefits after BTX-B treatment lasted an average of 14 weeks. Of the 41 patients with at least 3 injection ses-sions (mean 10 ± 8.6), most patients needed increased dosage upon the last session compared to the first session. Nineteen patients (32.8%) with 27 sessions (17.2%) reported adverse effects with BTX-B treatment. Conclusions Though most patients require increased dosage to maintain effective response after repeated injections, BTX-B is an effective and safe treatment drug for a variety of movement disorders, as well as drooling and hyperhidrosis.
文摘AIM:Achalasia is the best known primary motor disorder of the esophagus in which the lower esophageal sphincter (LES)has abnormally high resting pressure and incomplete relaxation with swallowing.Pneumatic dilatation remains the first choice of treatment.The aims of this study were to determine the long term clinical outcome of treating achatasia initially with pneumatic dilatation and usefulness of pneumatic dilatation technique under endoscopic observation without fluoroscopy. METHODS:A total of 65 dilatations were performed in 43 patients with achalasia[23 males and 20 females,the mean age was 43 years(range,19-73)].All patients underwent an initial dilatation by inflating a 30 mm balloon to 15 psi under endoscopic control.The need for subsequent dilatation was based on symptom assessment.A 3.5 cm balloon was used for repeat procedures. RESULTS:The 30 mm balloon achieved a satisfactory result in 24 patients(54%)and the 35 mm ballon in 78% of the remainder(14/18).Esophageal perforation as a short-term complication was observed in one patient(2.3%).The only late complication encountered was gastroesophageal reflux in 2(4%)patients with a good response to dilatation.The mean follow-up period was 2.4 years(6 mo-5 years).Of the patients studied,38(88%)were relieved of their symptoms after only one or two sessions.Five patients were referred for surgery(one for esophageal perforation and four for persistent or recurrent symptoms).Among the patients whose follow up information was available,the percentage of patients in remission was 79%(19/24)at 1 year and 54%(7/13)at 5 years. CONCLUSION:Performing balloon dilatation under endoscopic observation as an outpatient procedure is simple,safe and efficacious for treating patients with achalasia and referral of surgical myotomy should be considered for patients who do not respond to medical therapy or individuals that do not desire pneumatic dilatations.
文摘Objective To study the outcome of tension-free vaginal tape (TVT) for the treatment of stress urinary incontinence (SUI) in women with cystocele. Methods Forty-two patients with SUI confirmed by urodynamics underwent the TVT procedure under local anesthesia. A prolapse repair was done simultaneously. Results Mean TVT operation time was 26.29 minutes. Mean blood loss was 29.86 mL. Eighty-eight percent of the patients were able to micturate spontaneously within 12 hours and residual urine was less than 100 mL. And 12% of the patients had to use indwelling catheter for 3-11 days. Average hospital stay was 2.91 days. Eighty-eight percent of patients were discharged within 2 days. All patients were followed up (an average of 10.26 months). According to subjective and objective assessment of the outcome, 39 patients (93%) were cured, another 3 patients (7%) were significantly improved and none was failed. There were no major complications such as bladder injury occurred. Conclusion TVT procedure is a minimal invasive, effective, and safe surgery for treatment of SUI.
文摘It is generally accepted that governments favor expansive fiscal policies to address an economic scenario in which supply exceeds demand. In other words, economic imbalance is regarded as the cause of the problem and fiscal expansion as the result. However, this paper posits that China＇s expansive fiscal policies may also be a major cause of its economic imbalance, and that fiscal expansion and economic imbalance create cumulative causation. Specifically, China＇s tax system, characterized by a regressive commodity tax, intensifies constraints on domestic consumption while distributing a large proportion of national income to government and enterprises; supply-demand imbalance prompts the government to expand fiscal expenditures and increase taxes, which further exacerbates this imbalance. Thus, even as the country faces a macroeconomic imbalance, the strong measures it adopts in response may stimulate economic growth in the short term, but in the long term, they may do exactly the opposite and create the next economic crisis.
文摘The structural readjustments and innovations accompanying institutional change have brought about contradictions and conflicts among different interest groups. The many problems thus touched off can be attributed to the tensions resulting from ＂structural strain,＂ with ＂anomie＂ a typical structural problem. We have used survey data as a basis for analyzing and examining the relationship between structural strain and anomie. We find that differences and differentiation in social status, organization, role and power structures and in income and educational level structures have indeed led to the birth of a sense of anomie. To a large extent, such negative feelings as individual anomie, dissatisfaction, a sense of relative deprivation, status inconsistency, etc., are nothing other than the result of the imbalances and tensions brought about by an objective structural differentiation that is proceeding faster than institutional integration.
基金the project ‘‘The Economic Assessment of Natural Disasters in Italy’’ (La valutazione economica dei disastri naturali in Italia, in Italian) funded by Fondazione Generali from 2013 to 2017
文摘In May 2012 a seismic sequence occurred in Northern Italy that was characterized by two main shocks with a magnitude range between 5.5 and 6. These shocks represent a good case study by which to quantify the monetary losses caused by a moderate earthquake in a densely populated and economically well-developed area.The loss estimation accounts for damage to residential buildings, and considers the full effect of all the seismic aftershock events that lasted for nearly a month. The building damage estimation is based on the European Macroseismic Scale(EMS-98) definitions, which depict the effects of an earthquake on built-up areas in terms of observed intensities. Input data sources are the residential building census provided by Istituto Nazionale di Statistica—the Italian National Institute of Statistics(ISTAT)—and the official market value of real estate assets, obtained from the Osservatorio del Mercato Immobiliare—the Real Estate Market Observatory(OMI). These data make it possible to quantify the economic losses due to earthquakes, an economic indicator updated yearly. The proposed multidisciplinary method takes advantage of seismic,engineering, and economic data sets, and is able to provide a reasonable after the event losses scenario. Data are not gathered for each single building and the intensity values are not a simple hazard indicator, but, notwithstanding its coarseness, this method ensures both robust and reproducible results. As the local property value is availablethroughout the Italian territory, the present loss assessment can be effortlessly repeated for any area, and may be quickly reproduced in case of future events, or used for predictive economic estimations.
