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Journal of Gemmology最新文献

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Aquamarine Crystal Containing a Large Multiphase Inclusion with a Mobile Bubble 海蓝宝石晶体，含有一个大的多相包体和一个可移动的气泡
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2023-01-01 DOI: 10.15506/jog.2023.38.5.421
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引用次数: 0
A New Reconstructed Turquoise Imitation Composed of Turquoise Powder with a PMMA (Acrylic) Binder 以PMMA(丙烯酸)为粘结剂的绿松石粉合成的新型仿绿松石
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2023-01-01 DOI: 10.15506/jog.2023.38.5.443
Féodor Blumentritt, E. Fritsch, N. Stephant, S. Karampelas, A. Delaunay, Candice Caplan, F. Notari
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引用次数: 0
Gemstone Supplier Conversations Guide 宝石供应商对话指南
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2023-01-01 DOI: 10.15506/jog.2023.38.6.540b
Carol M. Stockton
{"title":"Gemstone Supplier Conversations Guide","authors":"Carol M. Stockton","doi":"10.15506/jog.2023.38.6.540b","DOIUrl":"https://doi.org/10.15506/jog.2023.38.6.540b","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67240149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Surface Structures on Beryl Crystals 绿柱石晶体的表面结构
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2023-01-01 DOI: 10.15506/jog.2023.38.6.543
K. Schmetzer
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引用次数: 0
The Imperial Crown of the Holy Roman Empire, Part I: Photoluminescence and Raman Spectroscopic Study of the Gemstones 神圣罗马帝国的王冠，第一部分:宝石的光致发光和拉曼光谱研究
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2023-01-01 DOI: 10.15506/jog.2023.38.5.448
{"title":"The Imperial Crown of the Holy Roman Empire, Part I: Photoluminescence and Raman Spectroscopic Study of the Gemstones","authors":"","doi":"10.15506/jog.2023.38.5.448","DOIUrl":"https://doi.org/10.15506/jog.2023.38.5.448","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"39 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67239287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Brilliant Commodity: Diamonds and Jews in a Modern Setting 一种辉煌的商品:现代背景下的钻石和犹太人
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2023-01-01 DOI: 10.15506/jog.2023.38.5.533
R. Shor
{"title":"A Brilliant Commodity: Diamonds and Jews in a Modern Setting","authors":"R. Shor","doi":"10.15506/jog.2023.38.5.533","DOIUrl":"https://doi.org/10.15506/jog.2023.38.5.533","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67239998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Colour-Change Garnet Showing Blue Colouration from Kamtonga, Kenya 变色石榴石呈现蓝色，产自肯尼亚加姆汤加
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2023-01-01 DOI: 10.15506/jog.2023.38.6.545a
C. Schwarzinger
{"title":"Colour-Change Garnet Showing Blue Colouration from Kamtonga, Kenya","authors":"C. Schwarzinger","doi":"10.15506/jog.2023.38.6.545a","DOIUrl":"https://doi.org/10.15506/jog.2023.38.6.545a","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67240272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Directional Preference in Avian Midbrain Saliency Computing Nucleus Reflects a Well-Designed Receptive Field Structure. 鸟类中脑显著性计算核的方向偏好反映了精心设计的感受野结构
IF 2.7 4区 地球科学
Journal of Gemmology Pub Date : 2022-04-28 DOI: 10.3390/ani12091143
Jiangtao Wang, Longlong Qian, Songwei Wang, Li Shi, Zhizhong Wang
{"title":"Directional Preference in Avian Midbrain Saliency Computing Nucleus Reflects a Well-Designed Receptive Field Structure.","authors":"Jiangtao Wang, Longlong Qian, Songwei Wang, Li Shi, Zhizhong Wang","doi":"10.3390/ani12091143","DOIUrl":"10.3390/ani12091143","url":null,"abstract":"<p><p>Neurons responding sensitively to motions in several rather than all directions have been identified in many sensory systems. Although this directional preference has been demonstrated by previous studies to exist in the isthmi pars magnocellularis (Imc) of pigeon (<i>Columba livia</i>), which plays a key role in the midbrain saliency computing network, the dynamic response characteristics and the physiological basis underlying this phenomenon are unclear. Herein, dots moving in 16 directions and a biologically plausible computational model were used. We found that pigeon Imc's significant responses for objects moving in preferred directions benefit the long response duration and high instantaneous firing rate. Furthermore, the receptive field structures predicted by a computational model, which captures the actual directional tuning curves, agree with the real data collected from population Imc units. These results suggested that directional preference in Imc may be internally prebuilt by elongating the vertical axis of the receptive field, making predators attack from the dorsal-ventral direction and conspecifics flying away in the ventral-dorsal direction, more salient for avians, which is of great ecological and physiological significance for survival.</p>","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9105111/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89330377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
JNA’s Pearl Report 2022–2023 JNA的珍珠报告2022-2023
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2022.38.4.308
Carol M. Stockton
{"title":"JNA’s Pearl Report 2022–2023","authors":"Carol M. Stockton","doi":"10.15506/jog.2022.38.4.308","DOIUrl":"https://doi.org/10.15506/jog.2022.38.4.308","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67236858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Paraíba or Not? Cu-bearing Tourmaline with a Distinct Fe Concentration Paraíba或不?具有明显铁浓度的含铜碧玺
IF 1.2 4区 地球科学
Journal of Gemmology Pub Date : 2022-01-01 DOI: 10.15506/jog.2021.38.1.20
M. Krzemnicki, Hao A. O. Wang
{"title":"Paraíba or Not? Cu-bearing Tourmaline with a Distinct Fe Concentration","authors":"M. Krzemnicki, Hao A. O. Wang","doi":"10.15506/jog.2021.38.1.20","DOIUrl":"https://doi.org/10.15506/jog.2021.38.1.20","url":null,"abstract":"","PeriodicalId":48560,"journal":{"name":"Journal of Gemmology","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67234403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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