AIM:To investigate the short-term effects of commercially available eyelid-cleaning wipes on film parameters.METHODS:This study enrolled 48 healthy participants aged 20-35y(both males and females).Clinical assessment ...AIM:To investigate the short-term effects of commercially available eyelid-cleaning wipes on film parameters.METHODS:This study enrolled 48 healthy participants aged 20-35y(both males and females).Clinical assessment included the Ocular Surface Disease Index(OSDI)questionnaire,non-invasive tear break-up time(NITBUT),tear meniscus height(TMH),and lipid layer pattern(LLP).Based on these initial results,participants were categorized as either non-dry eye or dry eye.Participants in each group were randomly allocated to either Blephaclean■or Systane■treatments.Changes in NITBUT,TMH,and LLP levels before and after lid wipe treatment were assessed.RESULTS:The dry eye group exhibited significantly higher OSDI scores and lower NITBUT and TMH levels than in the non-dry eye group(P<0.001).Following the application of eyelid wipes(Systane■wipes),dry eye subjects experienced a significant improvement in NITBUT levels(P=0.0014)compared to the non-dry eye individuals.Although the remaining participants showed a marginal increase in TMH and NITBUT levels,these changes did not achieve statistical significance(P>0.05).Similarly,the LLP levels were significantly improved with Systane■(P<0.001)post-treatment compared to individuals in the non-dry eye group.However,the dry eye subjects showed higher posttreatment LLP levels than the untreated group(P<0.02).CONCLUSION:The short-term effects of Systane®eyelid wipes on tear film parameters suggest their effectiveness in dry eye disease.Nonetheless,further exploration of their long-term impact is essential to justify their cost effectiveness and efficacy in treating both aqueous deficiency and evaporative dryness.展开更多
The Canavese Zone(CZ)in the Western Alps represents the remnant of the distal passive margin of the Adria microplate,which was stretched and thinned during the Jurassic opening of the Alpine Tethys.Through detailed ge...The Canavese Zone(CZ)in the Western Alps represents the remnant of the distal passive margin of the Adria microplate,which was stretched and thinned during the Jurassic opening of the Alpine Tethys.Through detailed geological mapping,stratigraphic and structural analyses,we document that the continental break-up of Pangea and tectonic dismemberment of the Adria distal margin,up to mantle rocks exhumation and oceanization,did not simply result from the syn-rift Jurassic extension but was strongly favored by older structu ral inheritances(the Proto-Canavese Shear Zone),which controlled earlier lithospheric weakness.Our findings allowed to redefine in detail(i)the tectono-stratigraphic setting of the Variscan metamorphic basement and the Late Carbonife rous to Early Cretaceous CZ succession,(ii)the role played by inherited Late Carboniferous to Early Triassic structures and(iii)the significance of the CZ in the geodynamic evolution of the Alpine Tethys.The large amount of extensional displacement and crustal thinning occurred during different pulses of Late Carbonife rous-Early Triassic strike-slip tectonics is wellconsistent with the role played by long-lived regional-scale wrench faults(e.g.,the East-Variscan Shear Zone),suggesting a re-discussion of models of mantle exhumation driven by low-angle detachment faults as unique efficient mechanism in stretching and thinning continental crust.展开更多
Columbia(Nuna)is a Paleo-Mesoproterozoic supercontinent that was assembled during global 2.0–1.8Ga collisional events,underwent long-lived,subductionrelated accretion at key continental margins in the period
Solder balls, which are used in advanced electronics packages such as BGA (Ball Grid Array) and CSP (Chip Scale Package) to substitute the leads and realize the electrical and mechanical connections between substrate ...Solder balls, which are used in advanced electronics packages such as BGA (Ball Grid Array) and CSP (Chip Scale Package) to substitute the leads and realize the electrical and mechanical connections between substrate and chip,have severe specifications in diameter tolerance, roundness and surface quality, and therefore challenge the traditional technologies for fabrication of metallic particles and powders. The present work made a survey of perturbed molten metal jet break-up process, observed the formation and growth of capillary wave of tin-lead melt jet by way of rapid solidification, and on the basis of the above research, successfully obtained tin-lead eutectic and Sn-4.0Ag-0.5Cu lead free solder balls with tight distribution and good sphericity of particles through optimization of processing parameters, forming a solid base for cost effectively producing solder balls.展开更多
A computational study was carried out on bubble dynamic behaviors and bubble size distributions in a pressurized lab-scale gas-solid fluidized bed of Geldart A particles.High-resolution 3-D numerical simulations were ...A computational study was carried out on bubble dynamic behaviors and bubble size distributions in a pressurized lab-scale gas-solid fluidized bed of Geldart A particles.High-resolution 3-D numerical simulations were performed using the two-fluid model based on the kinetic theory of granular flow.A finegrid,which is in the range of 3–4 particle diameters,was utilized in order to capture bubble structures explicitly without breaking down the continuum assumption for the solid phase.A novel bubble tracking scheme was developed in combination with a 3-D detection and tracking algorithm(MS3 DATA)and applied to detect the bubble statistics,such as bubble size,location in each time frame and relative position between two adjacent time frames,from numerical simulations.The spatial coordinates and corresponding void fraction data were sampled at 100 Hz for data analyzing.The bubble coalescence/break-up frequencies and the daughter bubble size distribution were evaluated by using the new bubble tracking algorithm.The results showed that the bubble size distributed non-uniformly over cross-sections in the bed.The equilibrium bubble diameter due to bubble break-up and coalescence dynamics can be obtained,and the bubble rise velocity follows Davidson’s correlation closely.Good agreements were obtained between the computed results and that predicted by using the bubble break-up model proposed in our previous work.The computational bubble tracking method showed the potential of analyzing bubble motions and the coalescence and break-up characteristics based on time series data sets of void fraction maps obtained numerically and experimentally.展开更多
The late Archean Dharwar Craton is an important part of the Archean and Proterozoic terrains in Peninsular India.Dharwar Craton consists of Western and Eastern Blocks,separated by the Chitradurga Shear Zone.Eastern
Complete and incomplete fusion cross sections have been measured for the 20Ne + 51V system to investigate the influence of projectile break-up at or above the barrier energies. The excitation function of the individua...Complete and incomplete fusion cross sections have been measured for the 20Ne + 51V system to investigate the influence of projectile break-up at or above the barrier energies. The excitation function of the individual reaction channel measured using off-line γ-ray spectroscopy has been compared with those estimated theoretically using the statistical model code PACE4. A significant fraction of incomplete fusion has been found in the production of residues involving α-particle in the exit channel. In order to understand the energy dependence of incomplete fusion reactions, incomplete fusion fraction has been deduced, which has also been compared with the earlier data available for 12C and 16O projectiles to look for the projectile structure dependence.展开更多
为了研究油套管螺纹接头不同密封结构参数与密封面粘扣的关系,以Φ346.08 mm×15.88 mm P110套管特殊螺纹接头为例,设计了不同的密封面参数,并进行实物上、卸扣试验,通过试验分析提出可以用摩擦功这一量化指标来表征密封面抗粘扣性...为了研究油套管螺纹接头不同密封结构参数与密封面粘扣的关系,以Φ346.08 mm×15.88 mm P110套管特殊螺纹接头为例,设计了不同的密封面参数,并进行实物上、卸扣试验,通过试验分析提出可以用摩擦功这一量化指标来表征密封面抗粘扣性能。研究表明,当摩擦功小于387 kJ时,粘扣风险较低;密封结构不匹配会导致密封面接触发生“犁削效果”,即使摩擦功很小也会发生粘扣,属于非正常摩擦磨损。展开更多
【目的】观察针刺治疗肝经郁热型干眼症的疗效及其对焦虑情绪的影响。【方法】将78例肝经郁热型干眼症患者随机分为观察组和对照组,每组各39例。对照组给予聚乙烯醇滴眼液滴眼治疗,观察组在对照组的基础上加用针刺治疗,疗程为1个月。观...【目的】观察针刺治疗肝经郁热型干眼症的疗效及其对焦虑情绪的影响。【方法】将78例肝经郁热型干眼症患者随机分为观察组和对照组,每组各39例。对照组给予聚乙烯醇滴眼液滴眼治疗,观察组在对照组的基础上加用针刺治疗,疗程为1个月。观察2组患者治疗前后主观症状评分、泪膜破裂时间(break-up time,BUT)、泪液分泌试验(Schirmer I test,SIT)、角膜荧光染色结果(fluorescein,FL)评分以及焦虑自评量表(SAS)评分的变化情况,并评价2组患者的临床疗效和焦虑改善疗效。【结果】(1)治疗1个月后,观察组的总有效率为89.74%(35/39),对照组为71.79%(28/39),组间比较,观察组的总有效率(χ^(2)检验)和总体疗效(秩和检验)均优于对照组(P<0.05)。(2)治疗后,2组患者的眼睛干燥感、异物感、疲劳感、烧灼感、不适感、视力波动等各项主观症状评分及总积分均较治疗前明显降低(P<0.05),且观察组的降低作用均明显优于对照组(P<0.05或P<0.01)。(3)治疗后,2组患者的BUT、SIT、FL评分均较治疗前明显改善(P<0.05),且观察组的改善作用均明显优于对照组(P<0.01)。(4)治疗后,2组患者的SAS评分均较治疗前明显降低(P<0.05),且观察组的降低作用明显优于对照组(P<0.01)。(5)治疗后,观察组的焦虑恢复正常率为89.29%(25/28),对照组为48.15%(13/27),组间比较(χ^(2)检验),观察组的焦虑改善疗效明显优于对照组(P<0.05)。【结论】在人工泪液治疗基础上加用针刺治疗肝经郁热型干眼症患者疗效确切,可有效改善患者临床症状和焦虑情绪,其疗效优于单纯人工泪液治疗。展开更多
文摘AIM:To investigate the short-term effects of commercially available eyelid-cleaning wipes on film parameters.METHODS:This study enrolled 48 healthy participants aged 20-35y(both males and females).Clinical assessment included the Ocular Surface Disease Index(OSDI)questionnaire,non-invasive tear break-up time(NITBUT),tear meniscus height(TMH),and lipid layer pattern(LLP).Based on these initial results,participants were categorized as either non-dry eye or dry eye.Participants in each group were randomly allocated to either Blephaclean■or Systane■treatments.Changes in NITBUT,TMH,and LLP levels before and after lid wipe treatment were assessed.RESULTS:The dry eye group exhibited significantly higher OSDI scores and lower NITBUT and TMH levels than in the non-dry eye group(P<0.001).Following the application of eyelid wipes(Systane■wipes),dry eye subjects experienced a significant improvement in NITBUT levels(P=0.0014)compared to the non-dry eye individuals.Although the remaining participants showed a marginal increase in TMH and NITBUT levels,these changes did not achieve statistical significance(P>0.05).Similarly,the LLP levels were significantly improved with Systane■(P<0.001)post-treatment compared to individuals in the non-dry eye group.However,the dry eye subjects showed higher posttreatment LLP levels than the untreated group(P<0.02).CONCLUSION:The short-term effects of Systane®eyelid wipes on tear film parameters suggest their effectiveness in dry eye disease.Nonetheless,further exploration of their long-term impact is essential to justify their cost effectiveness and efficacy in treating both aqueous deficiency and evaporative dryness.
基金supported by research grants from Universita di Torino (Ricerca Locale "ex 60%" 2014—2018)the Italian Ministry of University and Research ("Finanziamento annuale individuale delle attivita base di ricerca" 2017) to A.Festa and G.Balestro, and from "Comune di Tavagnasco" to S.De Caroli and A.Succo
文摘The Canavese Zone(CZ)in the Western Alps represents the remnant of the distal passive margin of the Adria microplate,which was stretched and thinned during the Jurassic opening of the Alpine Tethys.Through detailed geological mapping,stratigraphic and structural analyses,we document that the continental break-up of Pangea and tectonic dismemberment of the Adria distal margin,up to mantle rocks exhumation and oceanization,did not simply result from the syn-rift Jurassic extension but was strongly favored by older structu ral inheritances(the Proto-Canavese Shear Zone),which controlled earlier lithospheric weakness.Our findings allowed to redefine in detail(i)the tectono-stratigraphic setting of the Variscan metamorphic basement and the Late Carbonife rous to Early Cretaceous CZ succession,(ii)the role played by inherited Late Carboniferous to Early Triassic structures and(iii)the significance of the CZ in the geodynamic evolution of the Alpine Tethys.The large amount of extensional displacement and crustal thinning occurred during different pulses of Late Carbonife rous-Early Triassic strike-slip tectonics is wellconsistent with the role played by long-lived regional-scale wrench faults(e.g.,the East-Variscan Shear Zone),suggesting a re-discussion of models of mantle exhumation driven by low-angle detachment faults as unique efficient mechanism in stretching and thinning continental crust.
文摘Columbia(Nuna)is a Paleo-Mesoproterozoic supercontinent that was assembled during global 2.0–1.8Ga collisional events,underwent long-lived,subductionrelated accretion at key continental margins in the period
文摘Solder balls, which are used in advanced electronics packages such as BGA (Ball Grid Array) and CSP (Chip Scale Package) to substitute the leads and realize the electrical and mechanical connections between substrate and chip,have severe specifications in diameter tolerance, roundness and surface quality, and therefore challenge the traditional technologies for fabrication of metallic particles and powders. The present work made a survey of perturbed molten metal jet break-up process, observed the formation and growth of capillary wave of tin-lead melt jet by way of rapid solidification, and on the basis of the above research, successfully obtained tin-lead eutectic and Sn-4.0Ag-0.5Cu lead free solder balls with tight distribution and good sphericity of particles through optimization of processing parameters, forming a solid base for cost effectively producing solder balls.
基金supported by the National Natural Science Foundation of China(21908062)。
文摘A computational study was carried out on bubble dynamic behaviors and bubble size distributions in a pressurized lab-scale gas-solid fluidized bed of Geldart A particles.High-resolution 3-D numerical simulations were performed using the two-fluid model based on the kinetic theory of granular flow.A finegrid,which is in the range of 3–4 particle diameters,was utilized in order to capture bubble structures explicitly without breaking down the continuum assumption for the solid phase.A novel bubble tracking scheme was developed in combination with a 3-D detection and tracking algorithm(MS3 DATA)and applied to detect the bubble statistics,such as bubble size,location in each time frame and relative position between two adjacent time frames,from numerical simulations.The spatial coordinates and corresponding void fraction data were sampled at 100 Hz for data analyzing.The bubble coalescence/break-up frequencies and the daughter bubble size distribution were evaluated by using the new bubble tracking algorithm.The results showed that the bubble size distributed non-uniformly over cross-sections in the bed.The equilibrium bubble diameter due to bubble break-up and coalescence dynamics can be obtained,and the bubble rise velocity follows Davidson’s correlation closely.Good agreements were obtained between the computed results and that predicted by using the bubble break-up model proposed in our previous work.The computational bubble tracking method showed the potential of analyzing bubble motions and the coalescence and break-up characteristics based on time series data sets of void fraction maps obtained numerically and experimentally.
文摘The late Archean Dharwar Craton is an important part of the Archean and Proterozoic terrains in Peninsular India.Dharwar Craton consists of Western and Eastern Blocks,separated by the Chitradurga Shear Zone.Eastern
文摘Complete and incomplete fusion cross sections have been measured for the 20Ne + 51V system to investigate the influence of projectile break-up at or above the barrier energies. The excitation function of the individual reaction channel measured using off-line γ-ray spectroscopy has been compared with those estimated theoretically using the statistical model code PACE4. A significant fraction of incomplete fusion has been found in the production of residues involving α-particle in the exit channel. In order to understand the energy dependence of incomplete fusion reactions, incomplete fusion fraction has been deduced, which has also been compared with the earlier data available for 12C and 16O projectiles to look for the projectile structure dependence.
文摘为了研究油套管螺纹接头不同密封结构参数与密封面粘扣的关系,以Φ346.08 mm×15.88 mm P110套管特殊螺纹接头为例,设计了不同的密封面参数,并进行实物上、卸扣试验,通过试验分析提出可以用摩擦功这一量化指标来表征密封面抗粘扣性能。研究表明,当摩擦功小于387 kJ时,粘扣风险较低;密封结构不匹配会导致密封面接触发生“犁削效果”,即使摩擦功很小也会发生粘扣,属于非正常摩擦磨损。
文摘【目的】观察针刺治疗肝经郁热型干眼症的疗效及其对焦虑情绪的影响。【方法】将78例肝经郁热型干眼症患者随机分为观察组和对照组,每组各39例。对照组给予聚乙烯醇滴眼液滴眼治疗,观察组在对照组的基础上加用针刺治疗,疗程为1个月。观察2组患者治疗前后主观症状评分、泪膜破裂时间(break-up time,BUT)、泪液分泌试验(Schirmer I test,SIT)、角膜荧光染色结果(fluorescein,FL)评分以及焦虑自评量表(SAS)评分的变化情况,并评价2组患者的临床疗效和焦虑改善疗效。【结果】(1)治疗1个月后,观察组的总有效率为89.74%(35/39),对照组为71.79%(28/39),组间比较,观察组的总有效率(χ^(2)检验)和总体疗效(秩和检验)均优于对照组(P<0.05)。(2)治疗后,2组患者的眼睛干燥感、异物感、疲劳感、烧灼感、不适感、视力波动等各项主观症状评分及总积分均较治疗前明显降低(P<0.05),且观察组的降低作用均明显优于对照组(P<0.05或P<0.01)。(3)治疗后,2组患者的BUT、SIT、FL评分均较治疗前明显改善(P<0.05),且观察组的改善作用均明显优于对照组(P<0.01)。(4)治疗后,2组患者的SAS评分均较治疗前明显降低(P<0.05),且观察组的降低作用明显优于对照组(P<0.01)。(5)治疗后,观察组的焦虑恢复正常率为89.29%(25/28),对照组为48.15%(13/27),组间比较(χ^(2)检验),观察组的焦虑改善疗效明显优于对照组(P<0.05)。【结论】在人工泪液治疗基础上加用针刺治疗肝经郁热型干眼症患者疗效确切,可有效改善患者临床症状和焦虑情绪,其疗效优于单纯人工泪液治疗。
