佳作云集创意涌动中国珠宝首饰设计暨制作大赛初评揭幕

7月22日，由中国珠宝玉石首饰行业协会、国土资源部珠宝玉石首饰管理中心、北京歌华文化发展集团主办，国土资源部珠宝玉石首饰管理中心宣传推广部、北京高等珠宝研修学院以及珠宝首饰职业技能鉴定指导中心承办的2014年中国珠宝首饰设计暨制作大赛图稿初评在国土资源部珠宝玉石首饰管理中心举行。     

NGTC钻石4C新分级证书发布会隆重举行

2009年11月6日下午，由国家珠宝玉石质量监督检验中心、中国珠宝玉石首饰行业协会共同主办的“国家珠宝玉石质量监督检验中心（NGTC）钻石4C分级新证书发布会”在国土资源部珠宝玉石首饰管理中心多功能厅举行。本次发布会由国土资源部珠宝玉石首饰管理中心副主任、国家珠宝玉石质量监督检验中心主任毕立君主持，     

珠宝首饰产业成果荟萃京城——16个特色产业基地正式挂牌，“中国珠宝玉石特色产业基地市长论坛”在京隆重举行

由国土资源部，国家发展和改革委员会，科技部联合主办，中国珠宝玉石首饰行业的协会，国土资源部珠宝玉石首饰管理中心承办的“中国珠宝玉石首饰特色产业基地市长论坛”于11月10日在京隆重举行，国土资源部部长,中宝协会长孙文盛，国家发改委副主任欧新黔、科技部副部长李学勇、全国政协人口环境资源委员会副主任、中宝协常务副会长陈洲其，国土资源部珠宝玉石首饰管理中心副主任，中宝协副会长兼秘书长孙凤民等领导出席论坛并讲话，国土资源部副部长汪民主持开幕式。     

动态

2013中国国际珠宝展在京隆重开幕 备受业界瞩目、由中圆珠宝玉石首饰行业协会和国土资源部珠宝玉石首饰管理中心联合主办的2013中国国际珠宝展于10月31日上午在中国国际展览中心（老馆）隆重开幕。中国珠宝玉石首饰行业协会名誉会长陈洲其，中国珠宝玉石首饰行业协会常务副会长兼秘书长、国土资源部珠宝玉石首饰管理中心副主任孙凤民，中国珠宝玉石首饰行业协会副会长、国土资源部珠宝玉石首饰管理中心副主任毕立君等主办单位领导出席了开幕式。     

南非矿产资源考察团造访国检中心、中宝协

2010年5月6日上午，南非矿产资源部总司长NogXina先生率南非共和国考察团，访问了国家珠宝玉石质量监督检验中心和中国珠宝玉石首饰行业协会。国土资源部珠宝玉石首饰管理中心副主任、中宝协副会长兼秘书长孙凤民会见了考察团一行。国土资源部珠宝玉石首饰管理中心副主任、国家珠宝玉石质量监督检验中心主任毕立君参与会见。     

海南自由贸易港珠宝玉石贵金属首饰产业及检测市场分析

海南珠宝玉石贵金属首饰产业迎来了前所未有的发展机遇,借助当地的优惠政策和得天独厚的旅游优势,吸引了大批珠宝企业落户海南。但海南珠宝玉石贵金属首饰市场潜力与珠宝玉石贵金属首饰检测服务配套建设却成反比,检测服务远远不能满足当地珠宝玉石贵金属首饰产业的发展需求,是一个亟待开发的深海区。     

“珠宝消费专家顾问”职业培训工程启动

2006年2月18日，中国珠宝玉石首饰行业协会、国土资源部珠宝玉石首饰管理中心，就珠宝玉石首饰行业“驰名品牌”和“放心示范店”企业进行“珠宝消费专家顾问”职业培训发出通过。     

中国珠宝玉石首饰行业网开通——贾中权总经理谈行业网建立的意义及其功能

2006年11月8日，由国土资源部珠宝玉石首饰管理中心（以下简称“中心”）和中国珠宝玉石首饰行业协会）以下简称“协会”）共同主办的网上门户资讯，电子商务门户网站——中国珠宝玉石首饰行业网假中国国际珠宝展进行了隆重的开通仪式，这标志着中国珠宝玉石首饰行业在电子商务领域跨出了重要的一步。     

原创中国 艳惊西方——“紫气东来”东方首饰秀首次在巴塞尔世界钟表珠宝博览会成功举办

能在瑞士巴塞尔举办一场“东方首饰秀”，实在是要感谢瑞士展览公司的鼎力支持。因为此前从来没有类似合作的先例，且活动的举办与展览公司的招商没有直接的关系。但我们的真诚态度让他们感动，加之，他们也有让参观者近距离、真实地了解中国首饰文化的愿望，从而促成了此次合作。 在双方共同的努力下，一场由国土资源部珠宝玉石首饰管理中心、中国珠宝玉石首饰行业协会、中国宝石杂志社主办，广东潮鸿基实业有限公司承办，主题为“紫气东来”的东方首饰文化展示活动终于在4月2日假巴塞尔世界钟表珠宝博览会的1号馆“卢塞恩厅”举办，参加活动的嘉宾有：中国驻瑞士大使馆商务参赞王贺亮先生，国土资源部珠宝玉石首饰管理中心副主任、中国珠宝玉石首饰行业协会副会长兼秘书长孙凤民先生，瑞士展览公司总裁蕾妮·凯姆先生和主席Sylvie Ritter女士，广东潮鸿基实业有限公司总裁廖创宾先生，到场媒体近百家，另有参展嘉宾共计150余人。 这场首饰展示只是拉开了东西方首饰文化交流的序幕，但其意义深远，它是中国的珠宝文化首次有组织地面向世界，必将成为我国珠宝业向世界腾飞的一个彩色标志。     

四会实验室

2020年12月19日,珠宝国检(NGTC)四会实验室揭牌仪式在广东省四会市文化艺术中心顺利举办。四会市是我国目前规模最大的玉器专业加工和销售基地之一,珠宝国检(NGTC)四会实验室将以优良的技术水平和服务质量,为四会珠宝玉石首饰行业、企业和消费者提供鉴定、咨询、仲裁检验、职业教育、文化传播等方面的综合服务,全力为四会珠宝玉石首饰行业高质量发展助力,为珠宝玉器文化消费市场保驾护航。     

蛋白质水解度测定方法综述

对目前国内外常用的蛋白质水解度测定方法进行了综述，其中pH—state方法是通过滴定水解过程中释放的质子测定DH；OPA、TNBS及国内常用的水合茚三酮和甲醛等测定方法是利用游离氨基的反应测定DH。     

SEROLOGIC IDENTIFICATION OF SPECIES OF ORIGIN OF SAUSAGE MEATS

SUMMARY: A partially purified immunoglobulin G (lgG) solution prepared from the serum of species to be tested was heated to the specifications for sausages. The resulting supernatant fluid was decanted and the precipitate washed with saline and used to immunize rabbits. The supernatant fluid was used to sensitize tanned sheep red blood cells. The immune serum was rendered monospecific by absorptions with heterologous, heated lgG precipitates. A sample of monospecific immune serum was absorbed with a washed homogenate of sausage. Aliquots of the monospecific immune serum, both untreated and sausage absorbed, were tested with cells sensitized with the homologous heated lgG supematant fluid. A significant reduction of titer by sausage absorption indicated that the sausages contained the meat homologous to the immune serum.     

BASIS OF STABILITY OF AMINE SALTS OF LINOLEIC ACID

SUMMARY— The mechanism and generality of the known stabilization against autoxidation conferred on linoleic acid by certain basic amino acids, such as lysine and arginine, was investigated. Basic amino acids were the only class of compounds found to confer the effect. However, the smallest basic amino acid, 2,3-diaminopropionic acid, was not effective, nor was αβω-diaminc acid, 3,6-diaminohexanoic acid, although a simple isomer of lysine. The stabilization was observed only in the solid phase. Inclusion of sodium chloride in the solid matrix was deleterious to the effect. A large number of physical and chemical observations were made and correlated but it has not been possible to draw detailed conclusions about the mechanism of stabilization, nor can a detailed structure of the stabilized complex be suggested. The cause of the phenomenon appears to be closely associated with the physical arrangement of the ions in the crystal lattice.     

聚多元羧酸盐的合成及应用

研究了聚多元羧酸盐的合成方法及反应机理,将其应用于洗涤剂和PVC制品中分别代替三聚磷酸钠和邻苯二甲酸二丁酯,证明有良好效果。     

百年风尚

一场流光溢彩、赏心悦目的展览,一段百年风尚演进的传奇旅程,一次东西方文化艺术的完美对话。2013年9月13日,“博萃臻艺一中西方珍宝艺术展”在辽宁省博物馆举行了隆重的开幕仪式,法兰西共和国驻华大使白林女士、辽宁省文物局局长丁辉先生、辽宁省博物馆馆长马宝杰先生、卡地亚全球总裁兼首席执行官邓阁仕先生、卡地亚区域行政总裁（北亚洲）陆慧全先生、卡地亚中国区首席执行官陆意斯先生、辽宁省文物店总经理张春鹰先生,以及众多文化界与文博界的贵宾齐聚一堂,共同见证了这场文化艺术盛事。     

STABILITY OF AQUEOUS EMULSIONS OF THE ESSENTIAL OIL OF HOPS

Hop oil emulsions prepared from different varieties of hops have been found to exhibit enhanced physical stability on the addition of blends of the emulsifiers Span 20/Tween 80 or Span 60/Tween 60. Examination of the particle size and volume distributions of an emulsion by use of a Coulter Counter was found to be an excellent method of monitoring its stability. An indication as to the relative efficiency of emulsifiers can be obtained from Coulter Counter measurements on hop oil emulsions after storage for 4 days. The use of an ultracentrifuge provies a rapid means of testing emulsion stability and hence the effectiveness of emulsion stabilizers.     

ANALYTICAL CHARACTERIZATION OF THE PRODUCTS OF NONENZYMATIC GLYCOSYLATION OF LYSOZYME

The quantitative analysis of the reaction products of the water activity dependent nonenzymatic glycosylation of lysozyme was not straightforward. Difficulties arose in the determination of the number of bound glucose molecules because glycosylation leads to glucose mediated protein aggregation, and the likely presence of a mixture of relatively labile Schiff-base intermediates, and the more stable ketoamine products generated by Amadori rearrangement. Polyacrylamide gel electrophoresis was used to monitor protein aggregation; periodate oxidation, nuclear magnetic resonance (NMR), and oxalic acid hydrolysis combined with HPLC, emerged as the most promising methods to quantitate the degree of glycosylation. Possible interpretations are advanced to explain the apparent discrepancies in degree of glycosylation suggested by the different analytical methods evaluated.     

EFFECTS OF TYPES OF FAT AND OF RATES AND TEMPERATURES OF COMMINUTION ON DISPERSION OF LIPIDS IN FRANKFURTERS

ABSTRACT— The effect of time, temperature and rpm of comminution of emulsions was determined on the dispersion of approximately 25% of beef fat, pork fat or cottonseed oil in frankfurters. The numbers of lipid particles 5 μ or less in diameter increased in frankfurters containing either beef or pork fat as comminution was continued to higher temperatures, with pork fat dispersed more thoroughly. Fat tended to separate from frankfurters containing beef fat in particles 200 μ or more in diameter. In contrast, no specific degree of dispersion of particles 5 μ or less in diameter consistently indicated emulsion stability, or its lack. Increased rpm during comminution produced an increased dispersion of beef or pork fat. Under the same conditions pork fat was dispersed more finely than beef fat. Dispersion of cottonseed oil produced finely dispersed particles beyond the resolution of light microscopy, as was confirmed by electron microscopy which showed a substantial number of particles to be less than 1 μ in diameter.     

DEVELOPMENT OF CHAINS OF CELLS OF SACCHAROMYCES CEREVISIAE DURING FERMENTATION

The lengths of chains of cells of Saccharomyces cerevisiae were studied during fermentation. Pitching yeast generally contained about half of the total number of cells as two-celled chains. The chain lengths varied during the subsequent fermentation and the variations were characteristic of the strain. Electronic counting assessments of chain length were unreliable.     

矩阵乘积的行式,列式

给出了ｍ×ｍ矩阵与ｍ×ｎ矩阵的行（列）式的表达式．若Ａ＝ａ１１ａ１２…ａ１ｍａ２１ａ２２…ａ２ｍ……ａｍ１ａｍ２…ａｍｍＢ＝ｂ１１ｂ１２…ｂ１ｎｂ２１ｂ２２…ｂ２ｎ……ｂｍ１ｂｍ２…ｂｍｎ分别是ｍ×ｍ，ｍ×ｎ矩阵，则｜Ａ｜｜Ｂ｜＝｜ＡＢ｜＋∑ｉ１＜ｉ２＜…＜ｉｔｊ１＜ｊ２＜…＜ｊｔ１≤ｔ≤ｍｎ－ｔ≥ｍＮＢｉ１ｉ２…ｉｔｊ１ｊ２…ｊｔＮＡＢ１…ｍ（－１）ｓｔ＋１ｊｔ＋１…（－１）ｓｎｊｎ其中ｉ１，ｉ２，…，ｉｔ是１，２，…，ｍ中ｔ个数码；ｊ１，ｊ２，…，ｊｔ，ｊｔ＋１，…，ｊｎ是１，２，…，ｎ的一个排列；ｓｒ＝π（ｊ１，ｊ２，…，ｊｔ，ｊｒ）（ｒ＝１，２，…，ｎ）是排列ｊ１，ｊ２，…，ｊｔ，ｊｒ的反序数．