AIM: To compare safety and efficacy of intravitreal dexamethasone(IVD) implant with topical nepafenac(TN) 0.1% in previously untreated Irvine-Gass syndrome(IGS) in clinical practice. METHODS: This was a retrospective ...AIM: To compare safety and efficacy of intravitreal dexamethasone(IVD) implant with topical nepafenac(TN) 0.1% in previously untreated Irvine-Gass syndrome(IGS) in clinical practice. METHODS: This was a retrospective study of 62 eyes with IGS after phacoemulsification with posterior chamber intraocular lens(IOL) implantation. None of the patients used treatment before IVD or TN. Best-corrected visual acuity(BCVA) with Early Treatment Diabetic Retinopathy Study chart(ETDRS), slit-lamp, intraocular pressure(IOP) measurement, fundus examination, spectral-domain optical coherence tomography(OCT) and fundus florescein angiography were performed to all subjects at baseline, 1, 3 and 6 mo. RESULTS: The mean BCVA of the IVD group was 49.3±6.8, and the mean BCVA of the TN group was 32.9±7.3 ETDRS letters in post-treatment month 6. The mean central macular thickness(CRT) of IVD group was 266.6±53.5 μm and the mean CRT of TN group was 364.9±56.3 μm in posttreatment month 6. Baseline BCVA has correlation with final BCVA in TN group however there was no correlation between baseline BCVA and final BCVA in IVD group. CONCLUSION: IVD is found to be better than TN in controlling pseudophakic macular edema and improving visual acuity. IVD group also has significantly lower CRT however IOP is not significantly different between two groups in post-treatment month 6.展开更多
Influence of the gassing materials, such as PA6, PMMA, and POM on the dielectric properties of air are investigated. In this work, the fundamental electron collision cross section data were carefully selected and vali...Influence of the gassing materials, such as PA6, PMMA, and POM on the dielectric properties of air are investigated. In this work, the fundamental electron collision cross section data were carefully selected and validated. Then the species compositions of the air–organic vapor mixtures were calculated based on the Gibbs free energy minimization. Finally, the Townsend ionization coefficient, the Townsend electron attachment coefficient and the critical reduced electric field strength were derived from the calculated electron energy distribution function by solving the Boltzmann transport equation. The calculation results indicated that H;O with large attachment cross sections has a great impact on the critical reduced electric field strength of the air–organic vapor mixtures. On the other hand, the vaporization of gassing materials can help to increase the dielectric properties of air circuit breakers to some degree.展开更多
In Chiapas highlands to southeast of Mexico, the scarcity of water is worrying, according to technical reports of the IPCC the runoff will less between 150 to 250 mm per year in the southeast of Mexico, this situation...In Chiapas highlands to southeast of Mexico, the scarcity of water is worrying, according to technical reports of the IPCC the runoff will less between 150 to 250 mm per year in the southeast of Mexico, this situation will increase the problems of water availability in Chiapas highlands in the future. For actually more of 18,160 small rural indigenous communities (SRIC) in Chiapas there is not drinking water. In order to contribute a given solution to scarcity of drinking water in the SRIC, The Autonomous University of Chiapas (UNACH in its Spanish acronym) and Mexican Institute of Water Technology (IMTA in its Spanish acronym) designed and constructed in 1999 the Rain Water Harvesting (RWH) in Yalentay municipality of Zinacantan in Chiapas, Mexico. The scientific and technical contributions of RWH are: The design guarantee the water quality for a prolonged time of storage avoiding the photosynthesis inside the system;Not emitted greenhouse gasses because it doesn’t need any kind of fossil fuels;Not produces anything kind of damage to the environment;It has to be inexpensive, using in its construction manpower and materials from de region;Store the maximum quantity of water in the minimum space. The RWH has increased the standard of living of the habitants from Yalentay and improving their health conditions.展开更多
The study of arc behavior is important to understand the dynamic phenomena concerning the interruption process in a variety of switching devices. This paper is devoted to investigate the influence of gassing material ...The study of arc behavior is important to understand the dynamic phenomena concerning the interruption process in a variety of switching devices. This paper is devoted to investigate the influence of gassing material on blow open force and arc motion. To one double- breaker model, measuring the arc current, voltage and force acting on the moving conductor, the characteristics of the ratio of the emerging blow open force over arc power FB/（ui） could be obtained. With the help of a 2-D optical fiber measurement system, to one arc chamber model, arc motion behavior was measured, too. It is demonstrated that, with the action of gassing material, FB/（ui） will increase 2.5 times, and the arc will enter the splitter plates much easier.展开更多
As the rapid development of more powerful and safer lithiumion batteries, the mechanism study of gases evolution is attacking more and more attention in recent years. Especially under overcharge/discharge and/or high-...As the rapid development of more powerful and safer lithiumion batteries, the mechanism study of gases evolution is attacking more and more attention in recent years. Especially under overcharge/discharge and/or high-temperature working condition.展开更多
中国电子学会已成功申办第31届国际无线电科学(联盟)大会The 31th URSI General Assembly&Scientific Symposium(URSI GASS’2014),将于2014年8月16日~23日在北京召开。原计划于2014年召开第11届国际天线、电波传播和电磁理论学术...中国电子学会已成功申办第31届国际无线电科学(联盟)大会The 31th URSI General Assembly&Scientific Symposium(URSI GASS’2014),将于2014年8月16日~23日在北京召开。原计划于2014年召开第11届国际天线、电波传播和电磁理论学术研讨会The 11Th International Symposium On Antenna,Propagation and EM Theory(ISAPE’2014),该会议所涉及的学术交流方向和领域完全被URSI GASS’2014覆盖,经中国电子学会电波传播分会研究并报请中国电子学会批准,不再单独举办ISAPE’2014,其会议内容全部并入URSI GASS’2014。URSI GASS’2014是中国电子学会2014年的重点学术活动,是在我国举办的全世界无线电领域的"奥林匹克大会"。展开更多
The case studies are about atypical bilateral, postoperative Cystoid Macular Edema (CME) in two patients who underwent bilateral uncomplicated pha- coemulsification surgery with a trifocal Intraocular Lens (IOL). In p...The case studies are about atypical bilateral, postoperative Cystoid Macular Edema (CME) in two patients who underwent bilateral uncomplicated pha- coemulsification surgery with a trifocal Intraocular Lens (IOL). In postoperative follow-up, both the cases presented with complaints of bilateral blurring of vision. Irvine-Gass syndrome has been diagnosed after evaluation of the retina by fundoscopy and OCT macula. Posterior subtenon steroid injection has been prescribed and given. Regular OCT examinations indicated substantial ede- ma improvement. Subsequent improvement in visual acuity was also noted in both cases. Cystoid macular edema can happen in any case irrespective of the quality of IOL. The visual outcome is satisfactorily responsive towards steroid medication.展开更多
针对天然酯绝缘油杂散气体运行产气规律不清、产气机理不明的情况,该文搭建了电热联合应力及循环流动实验平台,探究电场强度、温度以及流动性对天然酯绝缘油杂散产气的影响;开展了基于ReaxFF的分子动力学模拟,从宏观和微观两个层面详细...针对天然酯绝缘油杂散气体运行产气规律不清、产气机理不明的情况,该文搭建了电热联合应力及循环流动实验平台,探究电场强度、温度以及流动性对天然酯绝缘油杂散产气的影响;开展了基于ReaxFF的分子动力学模拟,从宏观和微观两个层面详细阐述了天然酯绝缘油的电热联合应力分解产气过程及机理。实验和仿真结果表明:随着电场强度的增大,杂散气体含量按指数趋势增长,高场强油样的H_(2)、CO、CO_(2)高出0 k V/mm油样3~5个数量级;杂散气体含量随着温度的升高而增大;增加油样循环流动,杂散气体含量显著降低;在电热分解过程中,电场强度升高和时间增长会加剧酯分子的分解,H_(2)和CO_(2)是整个电热分解过程中的主要气体产物;不同甘油三酸酯分子之间产气路径存在较小差异。该成果为实现植物绝缘油中溶解气体全面诊断,有效评估变压器运维状态提供了理论指导与技术参考。展开更多
文摘AIM: To compare safety and efficacy of intravitreal dexamethasone(IVD) implant with topical nepafenac(TN) 0.1% in previously untreated Irvine-Gass syndrome(IGS) in clinical practice. METHODS: This was a retrospective study of 62 eyes with IGS after phacoemulsification with posterior chamber intraocular lens(IOL) implantation. None of the patients used treatment before IVD or TN. Best-corrected visual acuity(BCVA) with Early Treatment Diabetic Retinopathy Study chart(ETDRS), slit-lamp, intraocular pressure(IOP) measurement, fundus examination, spectral-domain optical coherence tomography(OCT) and fundus florescein angiography were performed to all subjects at baseline, 1, 3 and 6 mo. RESULTS: The mean BCVA of the IVD group was 49.3±6.8, and the mean BCVA of the TN group was 32.9±7.3 ETDRS letters in post-treatment month 6. The mean central macular thickness(CRT) of IVD group was 266.6±53.5 μm and the mean CRT of TN group was 364.9±56.3 μm in posttreatment month 6. Baseline BCVA has correlation with final BCVA in TN group however there was no correlation between baseline BCVA and final BCVA in IVD group. CONCLUSION: IVD is found to be better than TN in controlling pseudophakic macular edema and improving visual acuity. IVD group also has significantly lower CRT however IOP is not significantly different between two groups in post-treatment month 6.
基金supported by the National Key Basic Research Program of China(973 Program)2015CB251002National Natural Science Foundation of China under Grant 51521065,51577145+1 种基金the Fundamental Research Funds for the Central UniversitiesShaanxi Province Natural Science Foundation 2013JM-7010
文摘Influence of the gassing materials, such as PA6, PMMA, and POM on the dielectric properties of air are investigated. In this work, the fundamental electron collision cross section data were carefully selected and validated. Then the species compositions of the air–organic vapor mixtures were calculated based on the Gibbs free energy minimization. Finally, the Townsend ionization coefficient, the Townsend electron attachment coefficient and the critical reduced electric field strength were derived from the calculated electron energy distribution function by solving the Boltzmann transport equation. The calculation results indicated that H;O with large attachment cross sections has a great impact on the critical reduced electric field strength of the air–organic vapor mixtures. On the other hand, the vaporization of gassing materials can help to increase the dielectric properties of air circuit breakers to some degree.
文摘In Chiapas highlands to southeast of Mexico, the scarcity of water is worrying, according to technical reports of the IPCC the runoff will less between 150 to 250 mm per year in the southeast of Mexico, this situation will increase the problems of water availability in Chiapas highlands in the future. For actually more of 18,160 small rural indigenous communities (SRIC) in Chiapas there is not drinking water. In order to contribute a given solution to scarcity of drinking water in the SRIC, The Autonomous University of Chiapas (UNACH in its Spanish acronym) and Mexican Institute of Water Technology (IMTA in its Spanish acronym) designed and constructed in 1999 the Rain Water Harvesting (RWH) in Yalentay municipality of Zinacantan in Chiapas, Mexico. The scientific and technical contributions of RWH are: The design guarantee the water quality for a prolonged time of storage avoiding the photosynthesis inside the system;Not emitted greenhouse gasses because it doesn’t need any kind of fossil fuels;Not produces anything kind of damage to the environment;It has to be inexpensive, using in its construction manpower and materials from de region;Store the maximum quantity of water in the minimum space. The RWH has increased the standard of living of the habitants from Yalentay and improving their health conditions.
基金National Natural Science Foundation of China (NSFC) (No.50507016)
文摘The study of arc behavior is important to understand the dynamic phenomena concerning the interruption process in a variety of switching devices. This paper is devoted to investigate the influence of gassing material on blow open force and arc motion. To one double- breaker model, measuring the arc current, voltage and force acting on the moving conductor, the characteristics of the ratio of the emerging blow open force over arc power FB/（ui） could be obtained. With the help of a 2-D optical fiber measurement system, to one arc chamber model, arc motion behavior was measured, too. It is demonstrated that, with the action of gassing material, FB/（ui） will increase 2.5 times, and the arc will enter the splitter plates much easier.
基金partially supported by the National Natural Science Foundation of China (grant no. 22021001, 22179111)the Ministry of Science and Technology of China (grant no. 2021YFA1201900)+3 种基金the Basic Research Program of Tan Kah Kee Innovation Laboratory (grant no. RD2021070401)the Principal Fund from Xiamen University (grant no. 20720210015)the Fundamental Research Funds for the Central Universities (grant no. 20720220010)the National Natural Science Foundation of China (grant no. 22202082)。
文摘As the rapid development of more powerful and safer lithiumion batteries, the mechanism study of gases evolution is attacking more and more attention in recent years. Especially under overcharge/discharge and/or high-temperature working condition.
文摘中国电子学会已成功申办第31届国际无线电科学(联盟)大会The 31th URSI General Assembly&Scientific Symposium(URSI GASS’2014),将于2014年8月16日~23日在北京召开。原计划于2014年召开第11届国际天线、电波传播和电磁理论学术研讨会The 11Th International Symposium On Antenna,Propagation and EM Theory(ISAPE’2014),该会议所涉及的学术交流方向和领域完全被URSI GASS’2014覆盖,经中国电子学会电波传播分会研究并报请中国电子学会批准,不再单独举办ISAPE’2014,其会议内容全部并入URSI GASS’2014。URSI GASS’2014是中国电子学会2014年的重点学术活动,是在我国举办的全世界无线电领域的"奥林匹克大会"。
文摘The case studies are about atypical bilateral, postoperative Cystoid Macular Edema (CME) in two patients who underwent bilateral uncomplicated pha- coemulsification surgery with a trifocal Intraocular Lens (IOL). In postoperative follow-up, both the cases presented with complaints of bilateral blurring of vision. Irvine-Gass syndrome has been diagnosed after evaluation of the retina by fundoscopy and OCT macula. Posterior subtenon steroid injection has been prescribed and given. Regular OCT examinations indicated substantial ede- ma improvement. Subsequent improvement in visual acuity was also noted in both cases. Cystoid macular edema can happen in any case irrespective of the quality of IOL. The visual outcome is satisfactorily responsive towards steroid medication.
文摘针对天然酯绝缘油杂散气体运行产气规律不清、产气机理不明的情况,该文搭建了电热联合应力及循环流动实验平台,探究电场强度、温度以及流动性对天然酯绝缘油杂散产气的影响;开展了基于ReaxFF的分子动力学模拟,从宏观和微观两个层面详细阐述了天然酯绝缘油的电热联合应力分解产气过程及机理。实验和仿真结果表明:随着电场强度的增大,杂散气体含量按指数趋势增长,高场强油样的H_(2)、CO、CO_(2)高出0 k V/mm油样3~5个数量级;杂散气体含量随着温度的升高而增大;增加油样循环流动,杂散气体含量显著降低;在电热分解过程中,电场强度升高和时间增长会加剧酯分子的分解,H_(2)和CO_(2)是整个电热分解过程中的主要气体产物;不同甘油三酸酯分子之间产气路径存在较小差异。该成果为实现植物绝缘油中溶解气体全面诊断,有效评估变压器运维状态提供了理论指导与技术参考。
