Susceptibility and morphological characteristics of crevice corrosion for SS316, SS904L, SS254sMo and SS2507 in thesimulated low-temperature multi-effect distillation environment were investigated by cyclic polarizati...Susceptibility and morphological characteristics of crevice corrosion for SS316, SS904L, SS254sMo and SS2507 in thesimulated low-temperature multi-effect distillation environment were investigated by cyclic polarization test, scanningelectron microscope and laser microscope. The results show that the crevice corrosion resistance of four kinds of stainlesssteel is ranked as SS254sMo ≈ SS2507 〉 SS316 〉 SS904L. There are ＂cover＂ structures over the edge of active crevicecorrosion regions of SS904L, SS254sMo and SS2507, but SS316 is an exception. Galvanic corrosion characteristicsappeared in the crevice of duplex supper stainless steel SS2507.展开更多
This article presents a geometric exploration of the reconstruction of a model of the three-dimensional space that Leonardo da Vinci had before him or imagined when he created The Last Supper. The purpose is to reveal...This article presents a geometric exploration of the reconstruction of a model of the three-dimensional space that Leonardo da Vinci had before him or imagined when he created The Last Supper. The purpose is to reveal the geometrical principles inherent in this work of art, as well as to propose an invert geometrical method, from 2D to 3D space reconstruction.展开更多
OBJECTIVE: To assess the value of argon supper-cryosurgery for 42 patients with middle and late stage liver cancer. METHODS: Forty-two patients who had received argon supper-cryosurgery were analyzed retrospectively i...OBJECTIVE: To assess the value of argon supper-cryosurgery for 42 patients with middle and late stage liver cancer. METHODS: Forty-two patients who had received argon supper-cryosurgery were analyzed retrospectively in terms of their clinical characteristics as well as the performance of argon supper-cryosurgery. RESULTS: All patients were ameliorated in symptoms shortly after the operation, including pain alleviation, psyche straightening up, alpha-fetoprotein descending or recovery. Jaundice occurred in 1 patient and intraabdominal hemorrhage in 2. The levels of aspartate transaminase and alanine transaminase in all patients were elevated 1 month after the operation, and normalized after protective therapy of the liver. No operative death was noted. CONCLUSIONS: Cold and heat reversed therapy of argon supper-cryosurgery can drastically destroy tumor tissue, especially the tumors which are too large to resect or close to the large vessels. It is applicable to increase the operative rate, decrease the operative death rate, and enlarge the therapeutic scope.展开更多
Among the numerous themes on the suppers cited in the Bible, the Last Supper of Christ with His twelve apostles is the most poignant and rewarding for Christianity. Florentine Renaissance depictions of the theme are n...Among the numerous themes on the suppers cited in the Bible, the Last Supper of Christ with His twelve apostles is the most poignant and rewarding for Christianity. Florentine Renaissance depictions of the theme are numerous and varied, traditionally represented as a predella （step） panel and as an altarpiece in dining halls or sacristies of churches and convents. Vasari＇s Last Supper for the Refectory ofLe Murate （The Walled） in Florence is an unusual depiction of Christ＇s thanksgiving. This imposing religious structure was painted for a poor Benedictine nunnery＇s cenacolo （refectory） in Florence. Vasari completed two drawings for the commission in 1546. The drawings and painting reveal how Vasari drew upon the work of his predecessors to create an innovative expression of thanksgiving, betrayal, and departure. This large masterpiece was severely damaged, almost irreparably, by several mishaps and floods in 1583 and 1718 and, more recently, by the major Florentine alluvione （flood） of 1966. In commemoration of the 50th year anniversary of this last catastrophic event, Vasari＇s Le Mutate Last Supper was carefully and magically restored by a group of masterful technicians, artists, and scientists. Their collaboration and support from the private sector demonstrate the successful bond among art, technology, science, and patronage.展开更多
Aunt Hattie, putting on herhat after a Sunday afternoon visitto one of her married nephews,said to eight-year-old Tony, "Boy,would you like to walk with me tothe bus stop?"
基金supported by the National High Technology Research and Development Program(‘‘863’’ Program)of China(No.2015AA034301)the National Natural Science Foundation of China(No.51501201)
文摘Susceptibility and morphological characteristics of crevice corrosion for SS316, SS904L, SS254sMo and SS2507 in thesimulated low-temperature multi-effect distillation environment were investigated by cyclic polarization test, scanningelectron microscope and laser microscope. The results show that the crevice corrosion resistance of four kinds of stainlesssteel is ranked as SS254sMo ≈ SS2507 〉 SS316 〉 SS904L. There are ＂cover＂ structures over the edge of active crevicecorrosion regions of SS904L, SS254sMo and SS2507, but SS316 is an exception. Galvanic corrosion characteristicsappeared in the crevice of duplex supper stainless steel SS2507.
文摘This article presents a geometric exploration of the reconstruction of a model of the three-dimensional space that Leonardo da Vinci had before him or imagined when he created The Last Supper. The purpose is to reveal the geometrical principles inherent in this work of art, as well as to propose an invert geometrical method, from 2D to 3D space reconstruction.
文摘OBJECTIVE: To assess the value of argon supper-cryosurgery for 42 patients with middle and late stage liver cancer. METHODS: Forty-two patients who had received argon supper-cryosurgery were analyzed retrospectively in terms of their clinical characteristics as well as the performance of argon supper-cryosurgery. RESULTS: All patients were ameliorated in symptoms shortly after the operation, including pain alleviation, psyche straightening up, alpha-fetoprotein descending or recovery. Jaundice occurred in 1 patient and intraabdominal hemorrhage in 2. The levels of aspartate transaminase and alanine transaminase in all patients were elevated 1 month after the operation, and normalized after protective therapy of the liver. No operative death was noted. CONCLUSIONS: Cold and heat reversed therapy of argon supper-cryosurgery can drastically destroy tumor tissue, especially the tumors which are too large to resect or close to the large vessels. It is applicable to increase the operative rate, decrease the operative death rate, and enlarge the therapeutic scope.
文摘Among the numerous themes on the suppers cited in the Bible, the Last Supper of Christ with His twelve apostles is the most poignant and rewarding for Christianity. Florentine Renaissance depictions of the theme are numerous and varied, traditionally represented as a predella （step） panel and as an altarpiece in dining halls or sacristies of churches and convents. Vasari＇s Last Supper for the Refectory ofLe Murate （The Walled） in Florence is an unusual depiction of Christ＇s thanksgiving. This imposing religious structure was painted for a poor Benedictine nunnery＇s cenacolo （refectory） in Florence. Vasari completed two drawings for the commission in 1546. The drawings and painting reveal how Vasari drew upon the work of his predecessors to create an innovative expression of thanksgiving, betrayal, and departure. This large masterpiece was severely damaged, almost irreparably, by several mishaps and floods in 1583 and 1718 and, more recently, by the major Florentine alluvione （flood） of 1966. In commemoration of the 50th year anniversary of this last catastrophic event, Vasari＇s Le Mutate Last Supper was carefully and magically restored by a group of masterful technicians, artists, and scientists. Their collaboration and support from the private sector demonstrate the successful bond among art, technology, science, and patronage.
文摘Aunt Hattie, putting on herhat after a Sunday afternoon visitto one of her married nephews,said to eight-year-old Tony, "Boy,would you like to walk with me tothe bus stop?"
