New polyoxometalate α-K 12H 3[Y(BW 11O 39) 2]·25H 2O was synthesized and treated by high temperature gaseous rare earth permeation to prepare tungsten bronze K 0.475WO 3. XRD, TG-DTA, XPS, ...New polyoxometalate α-K 12H 3[Y(BW 11O 39) 2]·25H 2O was synthesized and treated by high temperature gaseous rare earth permeation to prepare tungsten bronze K 0.475WO 3. XRD, TG-DTA, XPS, 183W-NMR,CV and AC impedance spectra were used to characterize the resulting material. The results of XPS indicate that La has permeated and diffused into the body of the sample and exists in the forms of binding with other components. The crystal structure parameters of K 0.475WO 3 were obtained by the analysis of XRD, which shows tetragonal crystal system with lattice parameters: a=12 28 nm, c=3.833 nm, V=578.48 nm -3. The conductivities calculated from the results of AC impedance spectra of the material increase with the increasing of temperature, which shows a semiconductor character.展开更多
Steady-state corrosion and wear behaviors of two Al-bronzes,Cu-14Al-X and QAl9-4,in 5.0% H2SO4 solution were investigated. It is found that wear loss of bronzes in 5.0% H2SO4 solution is lower than that in water or in...Steady-state corrosion and wear behaviors of two Al-bronzes,Cu-14Al-X and QAl9-4,in 5.0% H2SO4 solution were investigated. It is found that wear loss of bronzes in 5.0% H2SO4 solution is lower than that in water or in air,namely,it exhibits negative synergy between corrosion and wear. Further analysis shows that corrosive solution plays an important role in cooling of specimen during the sliding wear to prevent the reduction of the surface hardness of specimen,induced by frictional heat. On the other hand,the bronzes suffer a de-alloying corrosion,and a noble copper subsurface and patina form on the specimen surface in corrosive solution,which has a passive function for further corrosion. The noble copper subsurface experiences strain hardening during the corrosion and wear,resulting in the increase of the surface hardness thus the increase in wear resistance.展开更多
The present study was set up to examine the effect of alloying elements （including harmful elements） on metallurgical features （material properties and qualitative parameters） of tin bronzes, with particular refer...The present study was set up to examine the effect of alloying elements （including harmful elements） on metallurgical features （material properties and qualitative parameters） of tin bronzes, with particular reference to church bells from Middle Ages to Current times. A driving force of this study was to identify and demonstrate features related to the quality of church bells made in different centuries. The findings have been derived via metallographic and chemical analysis of specimens of bells from various parts of Australasia and Europe. The bell materials consisted of a mixture of the a phase and the （α＋β） eutectoid essentially, in proportions determined by tin content and mould materials during casting. The samples from the 15th century to the one from the 20th century showed a progressive increase in hardness, ranging from the minimum of -280 VHM20g to a maximum of -470 VHM20g for the （α＋β） eutectoid, and -160 VHM20g to -230 VHM20g for the a phase. The investigation also shows that the sound decay of the bell decreased with lowering the wt.% of tin and increasing the wt.% of lead and silver. This information is expected to provide an additional interesting knowledge into manufacturing practices and their significance in the quality of church bells over past centuries.展开更多
The use of lead, some of which is characterized by a highly radiogenic signature, sharply distinguishes Bronze Age China from the rest of Eurasia. Scholars have long hypothesized that silver can offer an independent p...The use of lead, some of which is characterized by a highly radiogenic signature, sharply distinguishes Bronze Age China from the rest of Eurasia. Scholars have long hypothesized that silver can offer an independent proxy to characterize lead minerals. The summary of silver distribution associated with Shang and Western Zhou bronzes in this paper reveals an important difference between the south(Sanxingdui, Hanzhong, Jinsha, Panlongcheng, Xin’gan) and the Central Plains. Correlating silver with lead content as well as with the isotopic signature indicates that south China and the Central Plains had different lead sources during the late Shang period, and also that the highly radiogenic and common lead used at Anyang come from geochemical environments which cannot be distinguished by the level of silver.展开更多
The State Postal Bureau’s latest set of special stamps for 2003 features Eastern Zhou Dynasty (770-256 B,C.) bronzes. This eight-stamp set is the third to feature this type of relic; a set issued in 1964 depicted bro...The State Postal Bureau’s latest set of special stamps for 2003 features Eastern Zhou Dynasty (770-256 B,C.) bronzes. This eight-stamp set is the third to feature this type of relic; a set issued in 1964 depicted bronzes from the Yin Dynasty (14th-11th century}, and one featuring Western Zhou Dynasty (11th century-771 B.C.) bronzes was released in 1982.The Eastern Zhou Dynasty followed the Western, and during this period, bronze vessel casting developed remarkably. Artifacts from this period include sacrificial vessels, musical instruments, utensils, weapons and tools.One of these pieces, a rectangular tray decorated with tortoise and fish patterns, dates back to the late Spring and Autumn展开更多
A rare glimse into a forotten toorld,with bronzeware as the only relic left behind from one of southwest China's more advanced,yet more savage,civilizations.
Zhuang medicine shallow needling has a long history and plays a significant role in Chinese medicine.With the development of medical treatment in China,there is a constant improvement in the use of needles.Bone needle...Zhuang medicine shallow needling has a long history and plays a significant role in Chinese medicine.With the development of medical treatment in China,there is a constant improvement in the use of needles.Bone needles have been modified to pottery needles,bronze needles,and electroacupuncture.From this long development history,there are some improvements in terms of material and technology.By analyzing and comparing the primitive and current acupuncture instruments used in China and their therapeutic effects,it can be seen that China’s medical treatment is constantly improving and will continue to improve with technology.展开更多
The Shang Dynasty civilization in China is based on the development of the bronze techniques. A large amount of Shang Dynasty bronzes, excavated from Jiangxi, Hubei and Henan Provinces, have become a focus of world at...The Shang Dynasty civilization in China is based on the development of the bronze techniques. A large amount of Shang Dynasty bronzes, excavated from Jiangxi, Hubei and Henan Provinces, have become a focus of world attention. However,the Sha-ng Dynasty center was located at Zhenzhou and Allyang city areas, Henan Province, where no large copper ores have been found so far. Therefore, where did the huge ore material for casting the bronzes come from? It is an unsettled question paid attention by the archaeologists and scicntists. 35 Shang Dynasty bronzes and 21 copper and lead ore materials aged in the Shang-Zhou Dynasty, the Spring-Autumn Period and the modern time, have been measured by the use of mass spectrometry.Based upon lead isotopic ratios, the ore material for casting the bronzes with the middle isotopic ratios of 207Pb/206Pb ranged in 0.8～0.9 could come from the ancient copper mine of Tongling, Jiangxi Province and Tong Lushan, Hubei Province and that with the high isotopic ratios (＞0.9) could be from the northern part of the Shang Empire, called "Gongfang" in the historical records, e.g. today’s Hebei and LiaoningProvinces. The others with the low isotopic ratios (＜0.8) might originate from poly-metalic deposits, with the high isotopic ratios of 238U/204 Pb in the ore flux or in the magma.展开更多
以曹文轩代表作《青铜葵花》及汪海岚英译本为语料,并参照英文原创小说Charlie and the Chocolate Factory的文本和电影字幕,构建类比加平行的小型综合语料库,从副语言中的动作和神态两个角度分析英译本对主人公青铜的刻画。依次考察高...以曹文轩代表作《青铜葵花》及汪海岚英译本为语料,并参照英文原创小说Charlie and the Chocolate Factory的文本和电影字幕,构建类比加平行的小型综合语料库,从副语言中的动作和神态两个角度分析英译本对主人公青铜的刻画。依次考察高频次搭配动作、高强度搭配动作和“哭”“笑”两种神态的翻译。研究发现,英译本选词简单,语言精炼,充分切合目标语读者的接受度,成功重塑了青铜人物形象,但单一依赖纸质媒体使其海外传播度不尽人意。展开更多
文摘New polyoxometalate α-K 12H 3[Y(BW 11O 39) 2]·25H 2O was synthesized and treated by high temperature gaseous rare earth permeation to prepare tungsten bronze K 0.475WO 3. XRD, TG-DTA, XPS, 183W-NMR,CV and AC impedance spectra were used to characterize the resulting material. The results of XPS indicate that La has permeated and diffused into the body of the sample and exists in the forms of binding with other components. The crystal structure parameters of K 0.475WO 3 were obtained by the analysis of XRD, which shows tetragonal crystal system with lattice parameters: a=12 28 nm, c=3.833 nm, V=578.48 nm -3. The conductivities calculated from the results of AC impedance spectra of the material increase with the increasing of temperature, which shows a semiconductor character.
基金Project(50804019, 50774040) supported by the National Natural Science Foundation of ChinaProject(SB012007041) supported by the Doctor Academic Foundation of Lanzhou University of Technology, China
文摘Steady-state corrosion and wear behaviors of two Al-bronzes,Cu-14Al-X and QAl9-4,in 5.0% H2SO4 solution were investigated. It is found that wear loss of bronzes in 5.0% H2SO4 solution is lower than that in water or in air,namely,it exhibits negative synergy between corrosion and wear. Further analysis shows that corrosive solution plays an important role in cooling of specimen during the sliding wear to prevent the reduction of the surface hardness of specimen,induced by frictional heat. On the other hand,the bronzes suffer a de-alloying corrosion,and a noble copper subsurface and patina form on the specimen surface in corrosive solution,which has a passive function for further corrosion. The noble copper subsurface experiences strain hardening during the corrosion and wear,resulting in the increase of the surface hardness thus the increase in wear resistance.
基金the University of South Australia Postgraduate Research Program during a period of1996 to 1999
文摘The present study was set up to examine the effect of alloying elements （including harmful elements） on metallurgical features （material properties and qualitative parameters） of tin bronzes, with particular reference to church bells from Middle Ages to Current times. A driving force of this study was to identify and demonstrate features related to the quality of church bells made in different centuries. The findings have been derived via metallographic and chemical analysis of specimens of bells from various parts of Australasia and Europe. The bell materials consisted of a mixture of the a phase and the （α＋β） eutectoid essentially, in proportions determined by tin content and mould materials during casting. The samples from the 15th century to the one from the 20th century showed a progressive increase in hardness, ranging from the minimum of -280 VHM20g to a maximum of -470 VHM20g for the （α＋β） eutectoid, and -160 VHM20g to -230 VHM20g for the a phase. The investigation also shows that the sound decay of the bell decreased with lowering the wt.% of tin and increasing the wt.% of lead and silver. This information is expected to provide an additional interesting knowledge into manufacturing practices and their significance in the quality of church bells over past centuries.
基金This work has been partially supported by European Research Council Horizon 2020 Advanced Project FLAME(ERC AdG 670010Flow of Metal Across Eurasia).
文摘The use of lead, some of which is characterized by a highly radiogenic signature, sharply distinguishes Bronze Age China from the rest of Eurasia. Scholars have long hypothesized that silver can offer an independent proxy to characterize lead minerals. The summary of silver distribution associated with Shang and Western Zhou bronzes in this paper reveals an important difference between the south(Sanxingdui, Hanzhong, Jinsha, Panlongcheng, Xin’gan) and the Central Plains. Correlating silver with lead content as well as with the isotopic signature indicates that south China and the Central Plains had different lead sources during the late Shang period, and also that the highly radiogenic and common lead used at Anyang come from geochemical environments which cannot be distinguished by the level of silver.
文摘The State Postal Bureau’s latest set of special stamps for 2003 features Eastern Zhou Dynasty (770-256 B,C.) bronzes. This eight-stamp set is the third to feature this type of relic; a set issued in 1964 depicted bronzes from the Yin Dynasty (14th-11th century}, and one featuring Western Zhou Dynasty (11th century-771 B.C.) bronzes was released in 1982.The Eastern Zhou Dynasty followed the Western, and during this period, bronze vessel casting developed remarkably. Artifacts from this period include sacrificial vessels, musical instruments, utensils, weapons and tools.One of these pieces, a rectangular tray decorated with tortoise and fish patterns, dates back to the late Spring and Autumn
文摘A rare glimse into a forotten toorld,with bronzeware as the only relic left behind from one of southwest China's more advanced,yet more savage,civilizations.
基金The National Ministry of Science and Technology Key Research and Development Program Funding Project(No.2017YFC1703903)Self-funded scientific research project of Guangxi Zhuang Autonomous Region Administration of Traditional Chinese Medicine(No.GZZC2020076)+3 种基金Key Laboratory of Guangxi Zhuang Autonomous Region,DNA Barcode Identification of Zhuang Medicine Dripping Avalokitesvara(No.GXZYKF2020-10)Guangxi Education Department Guangxi College Young and Middle-Aged Teachers Basic Ability Improvement Project(No.2023KY0301)General Project of First-Class Discipline Construction Project of Guangxi University of Traditional Chinese Medicine(No.GJKY2019XK043)Guangxi University of Traditional Chinese Medicine,Guangxi School of Traditional Chinese Medicine Inheritance and Innovation Team funded project-Traditional Chinese Medicine Master Huang Jinming Academic Thought and Clinical Treatment Inheritance and Development Research Center(No.04B22058V2).
文摘Zhuang medicine shallow needling has a long history and plays a significant role in Chinese medicine.With the development of medical treatment in China,there is a constant improvement in the use of needles.Bone needles have been modified to pottery needles,bronze needles,and electroacupuncture.From this long development history,there are some improvements in terms of material and technology.By analyzing and comparing the primitive and current acupuncture instruments used in China and their therapeutic effects,it can be seen that China’s medical treatment is constantly improving and will continue to improve with technology.
文摘The Shang Dynasty civilization in China is based on the development of the bronze techniques. A large amount of Shang Dynasty bronzes, excavated from Jiangxi, Hubei and Henan Provinces, have become a focus of world attention. However,the Sha-ng Dynasty center was located at Zhenzhou and Allyang city areas, Henan Province, where no large copper ores have been found so far. Therefore, where did the huge ore material for casting the bronzes come from? It is an unsettled question paid attention by the archaeologists and scicntists. 35 Shang Dynasty bronzes and 21 copper and lead ore materials aged in the Shang-Zhou Dynasty, the Spring-Autumn Period and the modern time, have been measured by the use of mass spectrometry.Based upon lead isotopic ratios, the ore material for casting the bronzes with the middle isotopic ratios of 207Pb/206Pb ranged in 0.8～0.9 could come from the ancient copper mine of Tongling, Jiangxi Province and Tong Lushan, Hubei Province and that with the high isotopic ratios (＞0.9) could be from the northern part of the Shang Empire, called "Gongfang" in the historical records, e.g. today’s Hebei and LiaoningProvinces. The others with the low isotopic ratios (＜0.8) might originate from poly-metalic deposits, with the high isotopic ratios of 238U/204 Pb in the ore flux or in the magma.
文摘以曹文轩代表作《青铜葵花》及汪海岚英译本为语料,并参照英文原创小说Charlie and the Chocolate Factory的文本和电影字幕,构建类比加平行的小型综合语料库,从副语言中的动作和神态两个角度分析英译本对主人公青铜的刻画。依次考察高频次搭配动作、高强度搭配动作和“哭”“笑”两种神态的翻译。研究发现,英译本选词简单,语言精炼,充分切合目标语读者的接受度,成功重塑了青铜人物形象,但单一依赖纸质媒体使其海外传播度不尽人意。
