Infrared light represents a broad spectrum of light with wavelengths from 700 nm to 1 million nm（1,000 microns）.At its shortest wavelengths（referred to as near-infrared）,it merges with the red spectrum of visible ...Infrared light represents a broad spectrum of light with wavelengths from 700 nm to 1 million nm（1,000 microns）.At its shortest wavelengths（referred to as near-infrared）,it merges with the red spectrum of visible light.At the longest end（referred to as far-infrared）,it blends into the range of microwaves.展开更多
Laser and light treatments have recently become popular owing to its efficacy in treating laxity,rhytids,hyperpigmentation of the lower eyelids,and drooping of septum fat.For several decades,our department has explore...Laser and light treatments have recently become popular owing to its efficacy in treating laxity,rhytids,hyperpigmentation of the lower eyelids,and drooping of septum fat.For several decades,our department has explored the application of laser and light treatment for eye rejuvenation.This paper summarizes common treatment methods and analyzes the published literature on the indications and outcomes of multiple laser and light treatments for lower eyelid rejuvenation.An extensive survey of peer-reviewed literature was performed using PubMed,with the search terms“noninvasive treatment”,“infraorbital”,“palpebral bags”,“lower eyelid”,“radiofrequency(RF)”,“laser”,“nonsurgical skin tightening”,and“noninvasive fat reduction”.The results showed that the use of lasers,intense pulsed light(IPL),monopolar RF,bipolar RF,AdipoLASER rejuvenation(ALJ),and fractional RF microneedling are safe and effective treatments for palpebral bags.We conclude that using Qswitched lasers,IPL,RF,ALJ,and fractional RF microneedling is safe and effective for lower eyelid rejuvenation,with minimal complications and quick recovery.Further research and development of optoelectronic therapy may encourage breakthroughs in lower eyelid treatment,such as simplified complex surgery and noninvasive methods.展开更多
In this work, we have shown that mining waste derived Fe^3＋can be used to enhance the photocatalytic activity of TiO2. This will allow us to harness a waste product from the mines, and utilize it to enhance TiO2 phot...In this work, we have shown that mining waste derived Fe^3＋can be used to enhance the photocatalytic activity of TiO2. This will allow us to harness a waste product from the mines, and utilize it to enhance TiO2 photocatalytic waste water treatment efficiency. An organic linker mediated route was utilized to create a composite of TiO2 and biogenic jarosite. Evidence of Fe／O／Ti bonding in the TiO2/jarosite composite was apparent from the FTIR, EFTEM, EELS and ELNEFS analysis. The as prepared material showed enhanced photocatalytic activity compared to pristine TiO2, biogenic jarosite and mechanically mixed sample of jarosite and TiO2 under both simulated and natural solar irradiation. The prepared material can reduce the electrical energy consumption by 4 times compared to pristine P25 for degradation of organic pollutant in water. The material also showed good recyclability. Results obtained from sedimentation experiments showed that the larger sized jarosite material provided the surface to TiO2 nanoparticles, which increases the settling rate of the materials. This allowed simple and efficient recovery of the catalyst from the reaction system after completion of photocatalysis. Enhanced photocatalytic activity of the composite material was due to effective charge transfer between TiO2 and jarosite derived Fe^3＋as was shown from the EELS and ELNEFS. Generation of OHU was supported by photoluminesence（PL） experiments.展开更多
The processing of innovative lightweight materials to sheet metal components and assemblies with globally or locally defined properties is the object of this work. It takes a load-dependent design of components and as...The processing of innovative lightweight materials to sheet metal components and assemblies with globally or locally defined properties is the object of this work. It takes a load-dependent design of components and assemblies, for example, based on the composition of different construction materials or a targeted setting of component areas with specified characteristics to fully exploit the lightweight potential when substituting conventionally used materials. Different process chains for the manufacturing of roll-formed long products made of magnesium alloys and high-strength steels with locally defined properties will be presented in this paper. Depending on the kind of material to be formed and the desired product characteristics, different temperature managements are needed for capable processes. Due to limited formability at room temperature, magnesium alloys require a heating of the forming zones above 200–225 °C throughout the bending process in order to activate additional gliding planes and to avoid any failures in the radii. The realization of local hardening effects requires at least one process-integrated heat treatment when roll forming manganese–boron steels. For both processes, it is imperative to realize a heating and cooling down or quenching appropriate for the manufacturing of long products with the required quality. Additionally, proper line speeds that allow a continuously operated economical production have to be considered. Research results including design, FEA, realization and experimentation of the mentioned process chains and strategies will be described in detail.展开更多
文摘Infrared light represents a broad spectrum of light with wavelengths from 700 nm to 1 million nm（1,000 microns）.At its shortest wavelengths（referred to as near-infrared）,it merges with the red spectrum of visible light.At the longest end（referred to as far-infrared）,it blends into the range of microwaves.
基金supported by the Shanghai Municipal Key Clinical Specialty Project(grant no.shslczdzk00901).
文摘Laser and light treatments have recently become popular owing to its efficacy in treating laxity,rhytids,hyperpigmentation of the lower eyelids,and drooping of septum fat.For several decades,our department has explored the application of laser and light treatment for eye rejuvenation.This paper summarizes common treatment methods and analyzes the published literature on the indications and outcomes of multiple laser and light treatments for lower eyelid rejuvenation.An extensive survey of peer-reviewed literature was performed using PubMed,with the search terms“noninvasive treatment”,“infraorbital”,“palpebral bags”,“lower eyelid”,“radiofrequency(RF)”,“laser”,“nonsurgical skin tightening”,and“noninvasive fat reduction”.The results showed that the use of lasers,intense pulsed light(IPL),monopolar RF,bipolar RF,AdipoLASER rejuvenation(ALJ),and fractional RF microneedling are safe and effective treatments for palpebral bags.We conclude that using Qswitched lasers,IPL,RF,ALJ,and fractional RF microneedling is safe and effective for lower eyelid rejuvenation,with minimal complications and quick recovery.Further research and development of optoelectronic therapy may encourage breakthroughs in lower eyelid treatment,such as simplified complex surgery and noninvasive methods.
基金supported by the STI2030-Major Projects(2021ZD0203100)the National Natural Science Foundation of China(31922030,32171010,31771170,31900720,and 32171009)+3 种基金the Guangdong Basic and Applied Basic Research Foundation(2023B1515040010,2021B1515020035,2019A1515011598,and 2023A1515010478)the Science and Technology Program of Guangdong(2018B030334001)the Science and Technology Program of Guangzhou(202007030012)the Programme of Introducing Talents of Discipline to Universities(B14036).
基金supported by the National Research Foundation(No.88220,and 91510)
文摘In this work, we have shown that mining waste derived Fe^3＋can be used to enhance the photocatalytic activity of TiO2. This will allow us to harness a waste product from the mines, and utilize it to enhance TiO2 photocatalytic waste water treatment efficiency. An organic linker mediated route was utilized to create a composite of TiO2 and biogenic jarosite. Evidence of Fe／O／Ti bonding in the TiO2/jarosite composite was apparent from the FTIR, EFTEM, EELS and ELNEFS analysis. The as prepared material showed enhanced photocatalytic activity compared to pristine TiO2, biogenic jarosite and mechanically mixed sample of jarosite and TiO2 under both simulated and natural solar irradiation. The prepared material can reduce the electrical energy consumption by 4 times compared to pristine P25 for degradation of organic pollutant in water. The material also showed good recyclability. Results obtained from sedimentation experiments showed that the larger sized jarosite material provided the surface to TiO2 nanoparticles, which increases the settling rate of the materials. This allowed simple and efficient recovery of the catalyst from the reaction system after completion of photocatalysis. Enhanced photocatalytic activity of the composite material was due to effective charge transfer between TiO2 and jarosite derived Fe^3＋as was shown from the EELS and ELNEFS. Generation of OHU was supported by photoluminesence（PL） experiments.
基金the Federal Government of Germanythe Free State of Saxony namely within the programs European Regional Development Fund and Innovative Regional Growth Cores
文摘The processing of innovative lightweight materials to sheet metal components and assemblies with globally or locally defined properties is the object of this work. It takes a load-dependent design of components and assemblies, for example, based on the composition of different construction materials or a targeted setting of component areas with specified characteristics to fully exploit the lightweight potential when substituting conventionally used materials. Different process chains for the manufacturing of roll-formed long products made of magnesium alloys and high-strength steels with locally defined properties will be presented in this paper. Depending on the kind of material to be formed and the desired product characteristics, different temperature managements are needed for capable processes. Due to limited formability at room temperature, magnesium alloys require a heating of the forming zones above 200–225 °C throughout the bending process in order to activate additional gliding planes and to avoid any failures in the radii. The realization of local hardening effects requires at least one process-integrated heat treatment when roll forming manganese–boron steels. For both processes, it is imperative to realize a heating and cooling down or quenching appropriate for the manufacturing of long products with the required quality. Additionally, proper line speeds that allow a continuously operated economical production have to be considered. Research results including design, FEA, realization and experimentation of the mentioned process chains and strategies will be described in detail.
