The paper investigated the physical properties of muga silk.Surface properties,linear density,moisture regain and mechanical properties of muga silk were tested before and after degumming.The results show that muga si...The paper investigated the physical properties of muga silk.Surface properties,linear density,moisture regain and mechanical properties of muga silk were tested before and after degumming.The results show that muga silk has tiny fineness and high strength.The average fineness and the strength of the monofilament are 1.52 dtex and 5.62 cN/dtex,respectively.This makes up for the shortcomings of other kinds of silk,and has great potential in the application of biomaterials.展开更多
In this article the structure and properties of freeze-dried porous silk fibroin materials were tested and analyzed.The results indicated that for porous silk fibroin materials prepared by means of freeze-drying,if fr...In this article the structure and properties of freeze-dried porous silk fibroin materials were tested and analyzed.The results indicated that for porous silk fibroin materials prepared by means of freeze-drying,if freez-ing temperature was below —20℃,the structure of silk fibroin was mainly amorphous with a little silk Ⅱ crystal structure,and if freezing temperature was above —20℃,quite a lot of silk Ⅰ crystal structure formed.Porous silk fibroin materials,with average pore diameter be-展开更多
Keriya River, one of the ancient Four Green Corridors in the Tarim Basin, recording the changes of climate-environment and the ancient Silk Road of the region. According to the archaeological data, historical material...Keriya River, one of the ancient Four Green Corridors in the Tarim Basin, recording the changes of climate-environment and the ancient Silk Road of the region. According to the archaeological data, historical materials and paleoclimates information, its eeo-environment and climate have taken great changes since the 1.09 Ma B.P, especially during the recent 2,000 years, many famous ancient cities having been abandoned and the south route of the Silk Road has been moved southward. This study illustrates the capability of the remote sensing data （radar data, topographic data and optical images） and historical materials, in mapping the ancient drainage networks. A major paleodrainage system of Keriya River has linked the Kunlun Mountains to the Tienshan Mountains, possibly as far back as the early Pleistocene. The Keriya River will have important implications for not only the understanding of the paleoenvironments and paleoclimates of Tarim Basin from the early Pleistocene to the Holocene, but also the changes of the Silk Road.展开更多
Comprehensive Summary Fluorescent silk has potential application in many fields such as bioimaging,tissue engineering scaffolds,luminescent marks,and dazzling fabrics.Among the methods to endow natural silk with fluor...Comprehensive Summary Fluorescent silk has potential application in many fields such as bioimaging,tissue engineering scaffolds,luminescent marks,and dazzling fabrics.Among the methods to endow natural silk with fluorescent properties,feeding silkworms with fluorescent additives is facile,low-cost and environment friendly,which has the prospect of large-scale production.In this paper,we reviewed the research progress for this aim in the past ten years,and summarized the unified characteristics for the substances that can enter the silk gland by digestive tract of silkworms.The advantages and disadvantages of various fluorescent materials for this application are compared in detail.And the future research directions are suggested to overcome the shortcomings of the present research.展开更多
Silk protein fibroin,as a biomedical material,has good biocompatibility,biodegradability,regulation and excellent physical and chemical properties. In this work,a low density porous silk fibroin material is prepared f...Silk protein fibroin,as a biomedical material,has good biocompatibility,biodegradability,regulation and excellent physical and chemical properties. In this work,a low density porous silk fibroin material is prepared from fibroin solution by high-speed shearing with impeller. By adjusting shear rate of the stirrer,silk fibroin aerogel with different sizes of the aperture is prepared. In general, this aerogel has small porosity, uniform pores, good mechanical properties and slow rate of degradation. It is observed that increasing the shear rate results in higher porosity of aerogel,while the diameter of the aerogel becomes smaller. This silk aerogel may offer a new option as biomaterial for the tissue engineering application based on the information on the structural behaviors.展开更多
To evaluate gambiered Guangdong silk＇s ecology properties, the raw materials ecology, production ecology and use ecology are analyzed; and the safety to human is tested according to GB/T18885 - 2002. Gambiered Guangd...To evaluate gambiered Guangdong silk＇s ecology properties, the raw materials ecology, production ecology and use ecology are analyzed; and the safety to human is tested according to GB/T18885 - 2002. Gambiered Guangdong silk is a kind of natural product. All its raw materials are reproducible and degradable natural resources, and it can decompose completely when being discarded. R is comfortable to wear, and easy to clean and dry. It is mainly manufactured by dip-dyeing in dye yam solution, and insolating under the burning sun. The production energy is solar, a kind of clean and reproducible energy. The production process is clean and environmental friendly. There is neither the utilization of synthetic dyestuff and chemical auxiliary, nor the discharge of environment pollutant, and even the dreg of dye yam is used as fuel. The safety test results show that pH value of water extract, heavy metal content （except for Pb content）, color fastness and odor meet the requirements of GB/T18885 - 2002 and Okeo-tex standard 100.展开更多
基金Fundamental Research Funds for the Central Universities,China(No.2232019G-06)
文摘The paper investigated the physical properties of muga silk.Surface properties,linear density,moisture regain and mechanical properties of muga silk were tested before and after degumming.The results show that muga silk has tiny fineness and high strength.The average fineness and the strength of the monofilament are 1.52 dtex and 5.62 cN/dtex,respectively.This makes up for the shortcomings of other kinds of silk,and has great potential in the application of biomaterials.
基金This work was supported by th National Advanced Materials Commlttee of China(NAMCC)
文摘In this article the structure and properties of freeze-dried porous silk fibroin materials were tested and analyzed.The results indicated that for porous silk fibroin materials prepared by means of freeze-drying,if freez-ing temperature was below —20℃,the structure of silk fibroin was mainly amorphous with a little silk Ⅱ crystal structure,and if freezing temperature was above —20℃,quite a lot of silk Ⅰ crystal structure formed.Porous silk fibroin materials,with average pore diameter be-
基金Acknowledgments This work was supported by the National Natural Science Foundation of China （Grant No. 41271427） and the National Key Technology R＆D Program （Grant No. 2012BAH27B05）.
文摘Keriya River, one of the ancient Four Green Corridors in the Tarim Basin, recording the changes of climate-environment and the ancient Silk Road of the region. According to the archaeological data, historical materials and paleoclimates information, its eeo-environment and climate have taken great changes since the 1.09 Ma B.P, especially during the recent 2,000 years, many famous ancient cities having been abandoned and the south route of the Silk Road has been moved southward. This study illustrates the capability of the remote sensing data （radar data, topographic data and optical images） and historical materials, in mapping the ancient drainage networks. A major paleodrainage system of Keriya River has linked the Kunlun Mountains to the Tienshan Mountains, possibly as far back as the early Pleistocene. The Keriya River will have important implications for not only the understanding of the paleoenvironments and paleoclimates of Tarim Basin from the early Pleistocene to the Holocene, but also the changes of the Silk Road.
基金by the National Natural Science Foundation of China(21975048,21771039)the Shanghai Science and Technology Committee(19Dz2270100).
文摘Comprehensive Summary Fluorescent silk has potential application in many fields such as bioimaging,tissue engineering scaffolds,luminescent marks,and dazzling fabrics.Among the methods to endow natural silk with fluorescent properties,feeding silkworms with fluorescent additives is facile,low-cost and environment friendly,which has the prospect of large-scale production.In this paper,we reviewed the research progress for this aim in the past ten years,and summarized the unified characteristics for the substances that can enter the silk gland by digestive tract of silkworms.The advantages and disadvantages of various fluorescent materials for this application are compared in detail.And the future research directions are suggested to overcome the shortcomings of the present research.
基金National Natural Science Foundation of China(No.51373114)College Natural Science Research Project of Jiangsu Province,China(No.15KJA540001)
文摘Silk protein fibroin,as a biomedical material,has good biocompatibility,biodegradability,regulation and excellent physical and chemical properties. In this work,a low density porous silk fibroin material is prepared from fibroin solution by high-speed shearing with impeller. By adjusting shear rate of the stirrer,silk fibroin aerogel with different sizes of the aperture is prepared. In general, this aerogel has small porosity, uniform pores, good mechanical properties and slow rate of degradation. It is observed that increasing the shear rate results in higher porosity of aerogel,while the diameter of the aerogel becomes smaller. This silk aerogel may offer a new option as biomaterial for the tissue engineering application based on the information on the structural behaviors.
基金Guangdong province science and technology plan project(No.2006B36401001)Guangzhou philosophy and social science planning program in 2005(No.YZ15-10)
文摘To evaluate gambiered Guangdong silk＇s ecology properties, the raw materials ecology, production ecology and use ecology are analyzed; and the safety to human is tested according to GB/T18885 - 2002. Gambiered Guangdong silk is a kind of natural product. All its raw materials are reproducible and degradable natural resources, and it can decompose completely when being discarded. R is comfortable to wear, and easy to clean and dry. It is mainly manufactured by dip-dyeing in dye yam solution, and insolating under the burning sun. The production energy is solar, a kind of clean and reproducible energy. The production process is clean and environmental friendly. There is neither the utilization of synthetic dyestuff and chemical auxiliary, nor the discharge of environment pollutant, and even the dreg of dye yam is used as fuel. The safety test results show that pH value of water extract, heavy metal content （except for Pb content）, color fastness and odor meet the requirements of GB/T18885 - 2002 and Okeo-tex standard 100.
