Pub Date : 2020-12-12DOI: 10.15964/J.CNKI.027JGG.2020.05.007
Le-xiu Sun, L. Hao, Wei Xiong, Yan Li
With the rapid development of 3D printing technology, applications in jewelry design and the other fields are also increasing. Selective Laser Melting (SLM) technology is also one of the important ways to make metal jewelry by one-time printing. In terms of jewelry design, it can print almost any shape of works, including empty shell structure, movable structure and special structure. However, there are still many design principles that need to pay attention to in the application of SLM technology in jewelry design. For example support structure design, internal structure design, mold polishing difficulty and post-processing design. This paper focuses on the support structure design and movable structure design, highlighting the great impact of SLM technology on jewelry manufacturing and processing process. Based on this technology, jewelry design and related exploration can not only meet the aesthetic needs of traditional jewelry, but also reflect the technical advantages of 3D printing in manufacturing, and can meet the actual needs in production more efficiently.
{"title":"Selective Laser Melting (SLM) Technology for Jewelry Design and Its Application","authors":"Le-xiu Sun, L. Hao, Wei Xiong, Yan Li","doi":"10.15964/J.CNKI.027JGG.2020.05.007","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.05.007","url":null,"abstract":"With the rapid development of 3D printing technology, applications in jewelry design and the other fields are also increasing. Selective Laser Melting (SLM) technology is also one of the important ways to make metal jewelry by one-time printing. In terms of jewelry design, it can print almost any shape of works, including empty shell structure, movable structure and special structure. However, there are still many design principles that need to pay attention to in the application of SLM technology in jewelry design. For example support structure design, internal structure design, mold polishing difficulty and post-processing design. This paper focuses on the support structure design and movable structure design, highlighting the great impact of SLM technology on jewelry manufacturing and processing process. Based on this technology, jewelry design and related exploration can not only meet the aesthetic needs of traditional jewelry, but also reflect the technical advantages of 3D printing in manufacturing, and can meet the actual needs in production more efficiently.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80865772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-12DOI: 10.15964/J.CNKI.027JGG.2020.05.002
X. Shen, Xinling Li, Wei Wei
Hetian Yu is an art treasure of Chinese culture with profound cultural connotations. Hetian Yu industry is also an important part of jewelry industry in China. The contents of National Standard Hetian Yu—Testing and Classification stipulate terminology and definition, testing, classification, naming rules and certification of Hetian Yu. It is emphasized that tremolite is the main mineral component of Hetian Yu. The paper focuses on the interpretation of the important parts, key technologies and innovation points of the National Standard. It introduces the standard development process, definition and colour origins of Hetian Yu, Tang Se, Bi Yu, Mo Yu and Cuiqing Yu, division method of Tang Se, and terminological of English translation. It also interprets the conventional gemmological testing characteristics, IR spectra and UV-Vis spectra, classification requirements, the analysis of eight classified varieties and main features and naming rules of Hetian Yu, which contributes to the population and implementation of the standard, and promote the healthy development of Hetian Yu market at home and abroad.
{"title":"Interpretation of National Standard Hetian Yu — Testing and Classification","authors":"X. Shen, Xinling Li, Wei Wei","doi":"10.15964/J.CNKI.027JGG.2020.05.002","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.05.002","url":null,"abstract":"Hetian Yu is an art treasure of Chinese culture with profound cultural connotations. Hetian Yu industry is also an important part of jewelry industry in China. The contents of National Standard Hetian Yu—Testing and Classification stipulate terminology and definition, testing, classification, naming rules and certification of Hetian Yu. It is emphasized that tremolite is the main mineral component of Hetian Yu. The paper focuses on the interpretation of the important parts, key technologies and innovation points of the National Standard. It introduces the standard development process, definition and colour origins of Hetian Yu, Tang Se, Bi Yu, Mo Yu and Cuiqing Yu, division method of Tang Se, and terminological of English translation. It also interprets the conventional gemmological testing characteristics, IR spectra and UV-Vis spectra, classification requirements, the analysis of eight classified varieties and main features and naming rules of Hetian Yu, which contributes to the population and implementation of the standard, and promote the healthy development of Hetian Yu market at home and abroad.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85829164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-12DOI: 10.15964/J.CNKI.027JGG.2020.05.006
Jingjing Chen, Yueping Luo
In this paper, the conventional gemmological and spectral characteristics of a type Ⅱa colourless diamond sample were analyzed. Gemmological characteristics of the diamond sample were tested by gem microscope; The DiamondViewTM observed the growth structure and photoluminescence of the diamond sample; UV-Vis spectrometer detected the UV-Visible absorption characteristics of the diamond sample; Fourier infrared spectrometer determined the type of the diamond sample; The confocal laser Raman spectrometer and PL-3000 portable laser Raman spectrometer analyzed the characteristic spectra of defects in the diamond sample. Based on the analysis of experimental data, it is concluded that the diamond sample is natural Ⅱa type colourless diamond with the characteristic peak at 270 nm in UV-Vis spectrum, which provided complete laboratory appraisal basis, and enriched the instruction and guidance for special type ultraviolet absorption type of natural type Ⅱa diamond for daily testing.
{"title":"Identification of Natural Type IIa Colourless Diamond with 270 nm Absorption Peak of UV-Visible Spectrum","authors":"Jingjing Chen, Yueping Luo","doi":"10.15964/J.CNKI.027JGG.2020.05.006","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.05.006","url":null,"abstract":"In this paper, the conventional gemmological and spectral characteristics of a type Ⅱa colourless diamond sample were analyzed. Gemmological characteristics of the diamond sample were tested by gem microscope; The DiamondViewTM observed the growth structure and photoluminescence of the diamond sample; UV-Vis spectrometer detected the UV-Visible absorption characteristics of the diamond sample; Fourier infrared spectrometer determined the type of the diamond sample; The confocal laser Raman spectrometer and PL-3000 portable laser Raman spectrometer analyzed the characteristic spectra of defects in the diamond sample. Based on the analysis of experimental data, it is concluded that the diamond sample is natural Ⅱa type colourless diamond with the characteristic peak at 270 nm in UV-Vis spectrum, which provided complete laboratory appraisal basis, and enriched the instruction and guidance for special type ultraviolet absorption type of natural type Ⅱa diamond for daily testing.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80170369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In recent years, China has become the largest producer of type Ⅱa colourless HPHT synthetic diamonds. And the identification of type Ⅱa HPHT synthetic diamond has become a challenging task. This research attempted to find the evidence of identification for type Ⅱa HPHT synthetic diamonds. Diamond samples from the high pressure and high temperature (HPHT) manufacturers in China (HH, J, Z) were collected, from which the inclusions and the distribution of impurities of 11 typical type Ⅱa diamond samples produced in the past three years were studied. Two main points of understanding were obtained: (1) When the fluorescent colour and image of type Ⅱa diamond under DiamondviewTM and other equipments can not give clear identification evidence, the conical, black thread-like or thin tubular inclusions, the distribution of fine point inclusions, shapeless cohenite, hematite, and magnetite inclusions can be used as the reference for determining the new HPHT synthetic diamonds. (2) Some samples have impurity defects which can be tested, and their emission peaks and distributions which are related to Ni and B can be used as the contributory characteristics for determining HPHT synthetic diamonds.
{"title":"Spectroscopic Feature and Identification Application of the Impurity and Inclusion in Type IIa HPHT Synthetic Diamond","authors":"Ying Ma, Zhili Qiu, Yuqing Zhuang, Shuqi Lai, Taijin Lu, Xiaoqin Deng","doi":"10.15964/J.CNKI.027JGG.2020.06.001","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.06.001","url":null,"abstract":"In recent years, China has become the largest producer of type Ⅱa colourless HPHT synthetic diamonds. And the identification of type Ⅱa HPHT synthetic diamond has become a challenging task. This research attempted to find the evidence of identification for type Ⅱa HPHT synthetic diamonds. Diamond samples from the high pressure and high temperature (HPHT) manufacturers in China (HH, J, Z) were collected, from which the inclusions and the distribution of impurities of 11 typical type Ⅱa diamond samples produced in the past three years were studied. Two main points of understanding were obtained: (1) When the fluorescent colour and image of type Ⅱa diamond under DiamondviewTM and other equipments can not give clear identification evidence, the conical, black thread-like or thin tubular inclusions, the distribution of fine point inclusions, shapeless cohenite, hematite, and magnetite inclusions can be used as the reference for determining the new HPHT synthetic diamonds. (2) Some samples have impurity defects which can be tested, and their emission peaks and distributions which are related to Ni and B can be used as the contributory characteristics for determining HPHT synthetic diamonds.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77144140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.15964/J.CNKI.027JGG.2020.03.005
Xing-Yao Li, Yan Li, Yamei Wang, Wei Xiong, Chenxing Xin
In view of the current design status of abnormal amber, this paper innovatively combines 3D digital technology with personalized inlay design of abnormal amber. This experiment selects three different abnormal amber samples by classifying shape and texture of common abnormal amber in the market. Based on the shape and defect position that displayed by the 3D scanning point cloud of the sample, the corresponding individualized inlay was designed. After creating the 3D digital model, the inlay was printed by selective laser melting (SLM) 3D printer. The 3D printed inlay position is more accurate and the design is no longer restricted by handicraft. The experiment results show that the combination of 3D scanning technology and inlay design not only reduces labor costs and saves raw materials, but also improves the firmness and aesthetics of the inlay. With the continuous exploration, the application of 3D digital technology will provide more convenience for jewelry production.
{"title":"Individualized Inlay Design of Abnormal Amber Based on 3D Scanning Technique","authors":"Xing-Yao Li, Yan Li, Yamei Wang, Wei Xiong, Chenxing Xin","doi":"10.15964/J.CNKI.027JGG.2020.03.005","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.03.005","url":null,"abstract":"In view of the current design status of abnormal amber, this paper innovatively combines 3D digital technology with personalized inlay design of abnormal amber. This experiment selects three different abnormal amber samples by classifying shape and texture of common abnormal amber in the market. Based on the shape and defect position that displayed by the 3D scanning point cloud of the sample, the corresponding individualized inlay was designed. After creating the 3D digital model, the inlay was printed by selective laser melting (SLM) 3D printer. The 3D printed inlay position is more accurate and the design is no longer restricted by handicraft. The experiment results show that the combination of 3D scanning technology and inlay design not only reduces labor costs and saves raw materials, but also improves the firmness and aesthetics of the inlay. With the continuous exploration, the application of 3D digital technology will provide more convenience for jewelry production.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90554321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-03-01DOI: 10.15964/J.CNKI.027JGG.2020.02.006
Sijia Tang, Ronghong Zhang
How to carry forward the traditional Chinese culture in the new era is a widely concerned topic. By analyzing the current application of contemporary materials and the corresponding performance of works, the authors point out that the rich material language derived from the selection of concepts and the integration of contemporary aesthetics has become a mature way of contemporary art creation. Through the analysis of the current situation of Chinese traditional cultural expression works, it is pointed out that Chinese artists are gradually exploring the way to absorb nutrients from the treasure house of traditional culture and find the appropriate way of cultural inheritance through contemporary thinking and technology. Because the contemporary material language with a complete system can adapt to the different needs of emotional and style expression, the exploration of contemporary material language from the perspective of innovation can provide new ideas for the innovation of traditional Chinese culture. Finally, through the innovative practice of material technology and emotional expression, a new balance point between material technology and expression content was found, and a preliminary study on the application of contemporary material language was completed. The Chinese traditional culture with a long history can always find new value in each era, and the contemporary material language provides new inspiration for its inheritance and innovation.
{"title":"Practice and Discussion on the Innovative Expression of Contemporary Material Language and Chinese Traditional Culture","authors":"Sijia Tang, Ronghong Zhang","doi":"10.15964/J.CNKI.027JGG.2020.02.006","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.02.006","url":null,"abstract":"How to carry forward the traditional Chinese culture in the new era is a widely concerned topic. By analyzing the current application of contemporary materials and the corresponding performance of works, the authors point out that the rich material language derived from the selection of concepts and the integration of contemporary aesthetics has become a mature way of contemporary art creation. Through the analysis of the current situation of Chinese traditional cultural expression works, it is pointed out that Chinese artists are gradually exploring the way to absorb nutrients from the treasure house of traditional culture and find the appropriate way of cultural inheritance through contemporary thinking and technology. Because the contemporary material language with a complete system can adapt to the different needs of emotional and style expression, the exploration of contemporary material language from the perspective of innovation can provide new ideas for the innovation of traditional Chinese culture. Finally, through the innovative practice of material technology and emotional expression, a new balance point between material technology and expression content was found, and a preliminary study on the application of contemporary material language was completed. The Chinese traditional culture with a long history can always find new value in each era, and the contemporary material language provides new inspiration for its inheritance and innovation.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80386261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.15964/J.CNKI.027JGG.2020.01.008
Qiong Liao
Taking the 3D printing technology and the traditional jewelry crafting process as the research object, the advantages and disadvantages of the two jewelry manufacturing methods are analyzed. Through the comparison of production cost, production cycle, structural process, precision accuracy, custom complexity, surface roughness, etc., the 3D printing technology is proposed to make the design and the manufacturing process of jewelry more cost-effective, improve the efficiency, increase the complexity of the structure, and enhance the success rate of customization. The traditional jewelry crafting process has the characteristics of mass production and beautiful decoration. Jewelry manufacturers can select the appropriate production methods for jewelry manufacturing based on the needs of the market.
{"title":"Comparative Study of 3D Printing Technology and Traditional Jewelry Crafting Process","authors":"Qiong Liao","doi":"10.15964/J.CNKI.027JGG.2020.01.008","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.01.008","url":null,"abstract":"Taking the 3D printing technology and the traditional jewelry crafting process as the research object, the advantages and disadvantages of the two jewelry manufacturing methods are analyzed. Through the comparison of production cost, production cycle, structural process, precision accuracy, custom complexity, surface roughness, etc., the 3D printing technology is proposed to make the design and the manufacturing process of jewelry more cost-effective, improve the efficiency, increase the complexity of the structure, and enhance the success rate of customization. The traditional jewelry crafting process has the characteristics of mass production and beautiful decoration. Jewelry manufacturers can select the appropriate production methods for jewelry manufacturing based on the needs of the market.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76875190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.15964/J.CNKI.027JGG.2020.01.005
Xiaolian Liu, Qing-xin Meng, Xihao Chen, Songliang Deng
The metamorphic quartzose jade in gemmology is reported for the first time. In this paper, the gemmological characteristics of the samples were summarized by means of polarizing microscope and reflecting microscope, electron probe, X-ray powder diffraction and infrared spectroscopy.The test results showed that the sample is composed of recrystallized quartz and a small amount of low-sodium feldspar. The quartz was a microcrystalline grain with a maximum particle size of 0.01 mm. Electron probe magnification 2 000× second electron image (SE) shows that the sample has a dense structure formed by 1—2 μm micron fine scales superposed with each other. The degree of crystallization of the sample decreases gradually from the shell to the transition layer to the interior and most of the internal quartz was cryptocrystalline and the grain boundaries could not be seen. The mass fraction of SiO2 in the quartz electron probe data is lower than the theoretical value. The total chemical composition of ilmenite is less than 100% due to the production of H2O during alteration.The infrared spectra showed obvious splitting near 900—1 200 cm-1 and 5 200 cm-1, which fully proved that the material was a kind of quartz jade formed by metamorphism that contains water.
{"title":"Gemmological Characteristic of Quartzose Jade by Metamorphism","authors":"Xiaolian Liu, Qing-xin Meng, Xihao Chen, Songliang Deng","doi":"10.15964/J.CNKI.027JGG.2020.01.005","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.01.005","url":null,"abstract":"The metamorphic quartzose jade in gemmology is reported for the first time. In this paper, the gemmological characteristics of the samples were summarized by means of polarizing microscope and reflecting microscope, electron probe, X-ray powder diffraction and infrared spectroscopy.The test results showed that the sample is composed of recrystallized quartz and a small amount of low-sodium feldspar. The quartz was a microcrystalline grain with a maximum particle size of 0.01 mm. Electron probe magnification 2 000× second electron image (SE) shows that the sample has a dense structure formed by 1—2 μm micron fine scales superposed with each other. The degree of crystallization of the sample decreases gradually from the shell to the transition layer to the interior and most of the internal quartz was cryptocrystalline and the grain boundaries could not be seen. The mass fraction of SiO2 in the quartz electron probe data is lower than the theoretical value. The total chemical composition of ilmenite is less than 100% due to the production of H2O during alteration.The infrared spectra showed obvious splitting near 900—1 200 cm-1 and 5 200 cm-1, which fully proved that the material was a kind of quartz jade formed by metamorphism that contains water.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86353718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.15964/J.CNKI.027JGG.2020.01.009
Shuyu Wu
Casting, a traditional craft with much strength in the creation of 3D objects, has provided great opportunities for art and craft. This paper introduces the definition and process of casting. With case study, this paper has uncovered the creative usage of casting in contemporary jewelry:the innovation in material and methods, and the conceptual consideration of casting. Author's art project Knotting Jewelry is also introduced in this paper.
{"title":"The Creative Casting in Contemporary Jewelry","authors":"Shuyu Wu","doi":"10.15964/J.CNKI.027JGG.2020.01.009","DOIUrl":"https://doi.org/10.15964/J.CNKI.027JGG.2020.01.009","url":null,"abstract":"Casting, a traditional craft with much strength in the creation of 3D objects, has provided great opportunities for art and craft. This paper introduces the definition and process of casting. With case study, this paper has uncovered the creative usage of casting in contemporary jewelry:the innovation in material and methods, and the conceptual consideration of casting. Author's art project Knotting Jewelry is also introduced in this paper.","PeriodicalId":15852,"journal":{"name":"Journal of Gems & Gemmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79514197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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