A new structure IGBT is proposed for reducing the power dissipation.It features a composite voltage-sustaining layer which includes a n-type buffer layer formed by ultra-deep diffusion and a transparent backside emitt...A new structure IGBT is proposed for reducing the power dissipation.It features a composite voltage-sustaining layer which includes a n-type buffer layer formed by ultra-deep diffusion and a transparent backside emitter formed by boron implantation.Working in a deep punch-through state during its normal operating condition,it still possesses all the characteristics of the robust non-punch-through IGBT (NPT-IGBT).With a chip-thickness thinner than that of the NPT-IGBT,the new structure presents a better trade-off relationship between the on-state voltage-drop and the turn-off loss.Experimental results show that the power loss of the new structure IGBT is 40% lower than that of the NPT-IGBT.展开更多
Purpose: To evaluate the preliminary results of the new non-ab-sorbable HEMA implant in deep sclerectomy surgery. Methods: 18 eyes (18 patients, 12 men and 6 female) with medically uncontrolled open angle glaucoma had...Purpose: To evaluate the preliminary results of the new non-ab-sorbable HEMA implant in deep sclerectomy surgery. Methods: 18 eyes (18 patients, 12 men and 6 female) with medically uncontrolled open angle glaucoma had deep sclerectomy with HEMA implants. Results: Postoperatively intraocular pressure was level at 1,3 and 6 months. We didn't found severe compli-展开更多
Twelve patients with uncontrolled open angle glaucoma underwent Non-Penetrating Deep Sclerectomy in the usual manner. After unroofing of Schlemms Canal and esxpure of its inner wall, ECA (5 micrograms) was introduced ...Twelve patients with uncontrolled open angle glaucoma underwent Non-Penetrating Deep Sclerectomy in the usual manner. After unroofing of Schlemms Canal and esxpure of its inner wall, ECA (5 micrograms) was introduced to the lumen of SC through its cut edges and applied over the inner wall. Following this, NPDS was completed as usual. IOP was reduced as expected展开更多
Purpose: to compare the results (IOP decrease, peroperative and postoperative complications) of NPDS and trabeculectomy. Patients and methods: This prospective, randomized study included 35 patients with open angle gl...Purpose: to compare the results (IOP decrease, peroperative and postoperative complications) of NPDS and trabeculectomy. Patients and methods: This prospective, randomized study included 35 patients with open angle glaucoma The disease was sym-展开更多
Purpose To present a novel approach for the control of IOP in neovascular glaucoma Setting Oxford Eye Centre and University of the Witwatersrand, Johannesburg South Africa. Methods Eighteen eyes with neovascular glauc...Purpose To present a novel approach for the control of IOP in neovascular glaucoma Setting Oxford Eye Centre and University of the Witwatersrand, Johannesburg South Africa. Methods Eighteen eyes with neovascular glaucoma were operated on展开更多
The quantity of patients with terminal glaucoma, overripe cataracts and other neglected eye pathology increases that in its turn leads to the increase of the growth in number of sight invalids. These patients face the...The quantity of patients with terminal glaucoma, overripe cataracts and other neglected eye pathology increases that in its turn leads to the increase of the growth in number of sight invalids. These patients face the great difficulties visiting doctors due to the lack of infrastructure in the cities. The residents of the settlements situated far from the central clinics are in the position even more difficult. It is known that over 70 per cents展开更多
文摘A new structure IGBT is proposed for reducing the power dissipation.It features a composite voltage-sustaining layer which includes a n-type buffer layer formed by ultra-deep diffusion and a transparent backside emitter formed by boron implantation.Working in a deep punch-through state during its normal operating condition,it still possesses all the characteristics of the robust non-punch-through IGBT (NPT-IGBT).With a chip-thickness thinner than that of the NPT-IGBT,the new structure presents a better trade-off relationship between the on-state voltage-drop and the turn-off loss.Experimental results show that the power loss of the new structure IGBT is 40% lower than that of the NPT-IGBT.
文摘Purpose: To evaluate the preliminary results of the new non-ab-sorbable HEMA implant in deep sclerectomy surgery. Methods: 18 eyes (18 patients, 12 men and 6 female) with medically uncontrolled open angle glaucoma had deep sclerectomy with HEMA implants. Results: Postoperatively intraocular pressure was level at 1,3 and 6 months. We didn't found severe compli-
文摘Twelve patients with uncontrolled open angle glaucoma underwent Non-Penetrating Deep Sclerectomy in the usual manner. After unroofing of Schlemms Canal and esxpure of its inner wall, ECA (5 micrograms) was introduced to the lumen of SC through its cut edges and applied over the inner wall. Following this, NPDS was completed as usual. IOP was reduced as expected
文摘Purpose: to compare the results (IOP decrease, peroperative and postoperative complications) of NPDS and trabeculectomy. Patients and methods: This prospective, randomized study included 35 patients with open angle glaucoma The disease was sym-
文摘Purpose To present a novel approach for the control of IOP in neovascular glaucoma Setting Oxford Eye Centre and University of the Witwatersrand, Johannesburg South Africa. Methods Eighteen eyes with neovascular glaucoma were operated on
文摘The quantity of patients with terminal glaucoma, overripe cataracts and other neglected eye pathology increases that in its turn leads to the increase of the growth in number of sight invalids. These patients face the great difficulties visiting doctors due to the lack of infrastructure in the cities. The residents of the settlements situated far from the central clinics are in the position even more difficult. It is known that over 70 per cents
