AIM:To evaluate the clinical outcomes of a new minimally invasive technique using horizontal mattress sutures and Hoffman pockets for four-point refixation of dislocated fourhaptic intraocular lenses(IOLs).METHODS:Thi...AIM:To evaluate the clinical outcomes of a new minimally invasive technique using horizontal mattress sutures and Hoffman pockets for four-point refixation of dislocated fourhaptic intraocular lenses(IOLs).METHODS:This retrospective consecutive case series included eyes with dislocated Akreos AO60 IOLs underwent scleral refixation using a horizontal mattress doubleneedle suture technique with intralamellar knot burial via Hoffman pockets.Clinical outcomes assessed included pre-and postoperative best-corrected visual acuity(BCVA),intraocular pressure(IOP),spherical equivalent(SE),suture duration,IOL centration,and perioperative complications.RESULTS:A total of 10 eyes from 10 patients(6 males)were included.The mean age at the time of IOL refixation was 53.10±13.07y(range:28-68y).The mean interval between initial IOL implantation and dislocation was 8.44±3.54y.The mean postoperative follow-up duration was 11.45±10.30mo.Surgical time averaged 15.3±1.77min,with no intraoperative complications.The mean axial length was 27.16±4.35 mm,with high myopia(HM)as the leading comorbidity(4/10 eyes).Postoperative BCVA significantly improved compared to preoperative values(P=0.025).Postoperative SE was significantly improved compared with preoperative(P=0.01).All IOLs remained centered throughout follow-up.CONCLUSION:This minimally invasive four-point scleral fixation technique offers a safe and effective refixation strategy for dislocated four-haptic IOLs.The horizontal mattress suture configuration combined with Hoffman pockets facilitates durable centration,avoids conjunctival dissection,and could be adopted into routine surgical practice.展开更多
A 4H-SiC superjunction(SJ)MOSFET(SJMOS)with integrated high-K gate dielectric and split gate(HKSG-SJMOS)is proposed in this paper.The key features of HKSG-SJMOS involve the utilization of high-K(HK)dielectric as the g...A 4H-SiC superjunction(SJ)MOSFET(SJMOS)with integrated high-K gate dielectric and split gate(HKSG-SJMOS)is proposed in this paper.The key features of HKSG-SJMOS involve the utilization of high-K(HK)dielectric as the gate dielectric,which surrounds the source-connected split gate(SG)and metal gate.The high-K gate dielectric optimizes the electric field distribution within the drift region,creating a low-resistance conductive channel.This enhancement leads to an increase in the breakdown voltage(BV)and a reduction in the specific on resistance(R_(on,sp)).The introduction of split gate surrounded by high-K dielectric reduces the gate-drain capacitance(C_(gd))and gate-drain charge(Q_(gd)),which improves the switching characteristics.The simulation results indicate that compared to conventional 4H-SiC SJMOS,the HKSG-SJMOS exhibits a 110.5%enhancement in figure of merit(FOM,FOM=BV^(2)/R_(on,sp)),a 93.6%reduction in the high frequency figure of merit(HFFOM)of R_(on,sp)·C_(gd),and reductions in turn-on loss(E_(on))and turn-off loss(E_(off))by 38.3%and 31.6%,respectively.Furthermore,the reverse recovery characteristics of HKSG-SJMOS has also discussed,revealing superior performance compared to conventional 4H-SiC SJMOS.展开更多
This paper focuses on the design of pocket parks against the background of urban microrenewal.Taking the“Qingshuitang”Pocket Park in Macheng Economic Development Zone as an example,it explores how to activate idle u...This paper focuses on the design of pocket parks against the background of urban microrenewal.Taking the“Qingshuitang”Pocket Park in Macheng Economic Development Zone as an example,it explores how to activate idle urban spaces through small-scale and incremental transformation.Based on the practical experience of Macheng City’s“San Chang Yi Zhuang Yi Yuan”(three plazas,one parking lot,one park)micro-renewal project,this paper analyzes the design strategies of pocket parks in terms of functional integration,cultural integration,and community participation,so as to provide references for similar projects.展开更多
With the rapid development of technology and fierce competition in the digital industry,integrated marketing plays a vital role in product promotion and sales.This article focuses on DJI OSMO Pocket 3,revealing the re...With the rapid development of technology and fierce competition in the digital industry,integrated marketing plays a vital role in product promotion and sales.This article focuses on DJI OSMO Pocket 3,revealing the reasons for its fiery“out of the circle”and the problems and challenges it faces by analyzing its marketing environment and marketing strategies,to provide useful references for DJI and similar brands to expand their brand awareness and enhance their market competitiveness in the future.展开更多
文摘AIM:To evaluate the clinical outcomes of a new minimally invasive technique using horizontal mattress sutures and Hoffman pockets for four-point refixation of dislocated fourhaptic intraocular lenses(IOLs).METHODS:This retrospective consecutive case series included eyes with dislocated Akreos AO60 IOLs underwent scleral refixation using a horizontal mattress doubleneedle suture technique with intralamellar knot burial via Hoffman pockets.Clinical outcomes assessed included pre-and postoperative best-corrected visual acuity(BCVA),intraocular pressure(IOP),spherical equivalent(SE),suture duration,IOL centration,and perioperative complications.RESULTS:A total of 10 eyes from 10 patients(6 males)were included.The mean age at the time of IOL refixation was 53.10±13.07y(range:28-68y).The mean interval between initial IOL implantation and dislocation was 8.44±3.54y.The mean postoperative follow-up duration was 11.45±10.30mo.Surgical time averaged 15.3±1.77min,with no intraoperative complications.The mean axial length was 27.16±4.35 mm,with high myopia(HM)as the leading comorbidity(4/10 eyes).Postoperative BCVA significantly improved compared to preoperative values(P=0.025).Postoperative SE was significantly improved compared with preoperative(P=0.01).All IOLs remained centered throughout follow-up.CONCLUSION:This minimally invasive four-point scleral fixation technique offers a safe and effective refixation strategy for dislocated four-haptic IOLs.The horizontal mattress suture configuration combined with Hoffman pockets facilitates durable centration,avoids conjunctival dissection,and could be adopted into routine surgical practice.
基金supported by the National Natural Science Foundation of China(Grant Nos.62074080 and U23B2042)in part by the Natural Science Foundation of Jiangsu Province(Grant No.BK20211104)in part by the Jiangsu Provincial Key Research and Development Program(Grant No.BE2022126)。
文摘A 4H-SiC superjunction(SJ)MOSFET(SJMOS)with integrated high-K gate dielectric and split gate(HKSG-SJMOS)is proposed in this paper.The key features of HKSG-SJMOS involve the utilization of high-K(HK)dielectric as the gate dielectric,which surrounds the source-connected split gate(SG)and metal gate.The high-K gate dielectric optimizes the electric field distribution within the drift region,creating a low-resistance conductive channel.This enhancement leads to an increase in the breakdown voltage(BV)and a reduction in the specific on resistance(R_(on,sp)).The introduction of split gate surrounded by high-K dielectric reduces the gate-drain capacitance(C_(gd))and gate-drain charge(Q_(gd)),which improves the switching characteristics.The simulation results indicate that compared to conventional 4H-SiC SJMOS,the HKSG-SJMOS exhibits a 110.5%enhancement in figure of merit(FOM,FOM=BV^(2)/R_(on,sp)),a 93.6%reduction in the high frequency figure of merit(HFFOM)of R_(on,sp)·C_(gd),and reductions in turn-on loss(E_(on))and turn-off loss(E_(off))by 38.3%and 31.6%,respectively.Furthermore,the reverse recovery characteristics of HKSG-SJMOS has also discussed,revealing superior performance compared to conventional 4H-SiC SJMOS.
文摘This paper focuses on the design of pocket parks against the background of urban microrenewal.Taking the“Qingshuitang”Pocket Park in Macheng Economic Development Zone as an example,it explores how to activate idle urban spaces through small-scale and incremental transformation.Based on the practical experience of Macheng City’s“San Chang Yi Zhuang Yi Yuan”(three plazas,one parking lot,one park)micro-renewal project,this paper analyzes the design strategies of pocket parks in terms of functional integration,cultural integration,and community participation,so as to provide references for similar projects.
文摘With the rapid development of technology and fierce competition in the digital industry,integrated marketing plays a vital role in product promotion and sales.This article focuses on DJI OSMO Pocket 3,revealing the reasons for its fiery“out of the circle”and the problems and challenges it faces by analyzing its marketing environment and marketing strategies,to provide useful references for DJI and similar brands to expand their brand awareness and enhance their market competitiveness in the future.
