期刊文献+
共找到31篇文章
< 1 2 >
每页显示 20 50 100
生如夏花之绚烂——简金品(JHAN)水贝展厅掠影
1
作者 易丽红 《中国宝玉石》 2005年第1期84-85,共2页
这是一个多么美丽又充满色彩的世界 我从远方赶来赴你一面之约 痴迷人间我为她狂野 是划过天边的刹那火焰……
关键词 水贝国际珠宝交易中心 简金品水贝展厅 经营策略 市场
下载PDF
综合节能技术在深圳市水贝珠宝城的应用
2
《中国照明》 2007年第3期4-4,共1页
2007年1月5日,深圳市节能协会对深圳市水贝珠宝城进行的节能改造工程历时半年成功完成,并通过验收,获得了市领导的肯定与赞誉。据了解,此项工程是在罗湖区科技局大力支持下,由深圳市节能协会设计和监理的,并由节能协会的会员单位... 2007年1月5日,深圳市节能协会对深圳市水贝珠宝城进行的节能改造工程历时半年成功完成,并通过验收,获得了市领导的肯定与赞誉。据了解,此项工程是在罗湖区科技局大力支持下,由深圳市节能协会设计和监理的,并由节能协会的会员单位集资的,用户零投入的EMC操作模式的工程。 展开更多
关键词 综合节能技术 深圳市 改造工程 节能协会 会员单位 水贝珠宝城
下载PDF
水贝黄金珠宝创业园开园
3
《中国黄金珠宝》 2010年第3期28-28,共1页
近日,水贝黄金珠宝创业园揭牌仪式暨开园仪式在水贝珠宝·彩宝基地隆重举行。水贝黄金珠宝创业园项目,由深圳市和罗湖区劳动部门与深圳市雅诺信集团共同筹划,将陆续引进深圳市有创业愿望和创业能力的大学毕业生、户籍创业者进驻... 近日,水贝黄金珠宝创业园揭牌仪式暨开园仪式在水贝珠宝·彩宝基地隆重举行。水贝黄金珠宝创业园项目,由深圳市和罗湖区劳动部门与深圳市雅诺信集团共同筹划,将陆续引进深圳市有创业愿望和创业能力的大学毕业生、户籍创业者进驻创业,形成一个具有滚动孵化功能的自主创业平台。 展开更多
关键词 创业园 珠宝 黄金 水贝 大学毕业生 深圳市 揭牌仪式
下载PDF
水贝珠宝表彰2010年度优秀通讯员
4
作者 吴钦裕 《中国宝玉石》 2011年第1期178-178,共1页
“4年,1440多个日子,对于媒体的成长来说只是短暂的一瞬,但对于一个从无到有、从小到大的《水贝珠宝报》、水贝珠宝网等自有媒体来说,这是一个蜕变的过程,我们在自有媒体的建设与发展中投入了大量工作,目前已取得了一定成绩!”在1... “4年,1440多个日子,对于媒体的成长来说只是短暂的一瞬,但对于一个从无到有、从小到大的《水贝珠宝报》、水贝珠宝网等自有媒体来说,这是一个蜕变的过程,我们在自有媒体的建设与发展中投入了大量工作,目前已取得了一定成绩!”在12月23日召开的2010年水贝珠宝通讯员迎新联谊暨圣诞晚会上,水贝珠宝负责人如是概述水贝珠宝自有媒体的成长历程, 展开更多
关键词 水贝珠宝 2010年 优秀通讯员 珠宝饰品
下载PDF
水贝航母 扬帆起航
5
《中国黄金珠宝》 2004年第1期98-99,共2页
历经四个月的招商活动,来自国内外的商户已经入户深圳水贝国际珠宝交易中心,被深圳人称为珠宝业“水贝航母”的水贝国际珠宝交易中心正式组建完成,正欲扬帆起航。
关键词 深圳市 水贝国际珠宝交易中心 珠宝业 市场营运
下载PDF
中国珠宝业“水贝模式”的发展前景研究
6
作者 张栋 《经济与社会发展研究》 2024年第22期0082-0084,共3页
珠宝零售终端当下兴起的“水贝模式”,一定程度上威胁着传统珠宝品牌的发展,也代表着中 国珠宝零售行业进入了一个新的时代。本文从传统珠宝零售业变革的角度探究了“水贝模式”的特征、 “水贝模式”出现的意义、“水贝模式”对传统珠... 珠宝零售终端当下兴起的“水贝模式”,一定程度上威胁着传统珠宝品牌的发展,也代表着中 国珠宝零售行业进入了一个新的时代。本文从传统珠宝零售业变革的角度探究了“水贝模式”的特征、 “水贝模式”出现的意义、“水贝模式”对传统珠宝品牌所造成的影响以及如何利用“水贝模式”构建和 谐健康的中国珠宝零售之路,对于传统珠宝品牌的发展具有一定的借鉴意义,同时对于传统珠宝行业的健 康发展具有一定的指导意义。 展开更多
关键词 水贝模式” 珠宝零售 珠宝加盟 黄金利润
下载PDF
正福国际MALL盛大开业发布《商业水贝全球宣言》
7
《中国宝石》 2011年第9期232-233,共2页
当金色的大地荡漾丰收的喜悦,深圳豪爽,水贝盎然。2011年9月13日上午11点,“商业水贝新时尚暨正福国际Mall开业庆典”于罗湖水贝爱得康大厦隆重举行。随着市政协主席白天、罗湖区委书记刘学强等嘉宾启动茧状感应器,一只只彩蝶破茧... 当金色的大地荡漾丰收的喜悦,深圳豪爽,水贝盎然。2011年9月13日上午11点,“商业水贝新时尚暨正福国际Mall开业庆典”于罗湖水贝爱得康大厦隆重举行。随着市政协主席白天、罗湖区委书记刘学强等嘉宾启动茧状感应器,一只只彩蝶破茧而出、上下翻飞,宣告了正福国际Man在深圳黄金珠宝集聚基地--水贝珠宝项链街区正式开业, 展开更多
关键词 珠宝首饰 宝石 时尚 《商业水贝全球宣言》
原文传递
珠江三角洲珠宝首饰专业市场巡礼之深圳篇之三:专业营销一流——访水贝国际珠宝交易中心
8
《中国宝石》 2004年第1期193-193,共1页
凡是中国从事珠宝首饰行业的人们都知道:沙头角是深圳的黄金饰品加工批发中心,中国最大的几家黄金饰品加工批发中心都集中在沙头角保税区的周围;而珠宝镶嵌和加工则一定要去位于深圳市罗湖区翠竹路周围的水贝、田贝,在那里集中了逾... 凡是中国从事珠宝首饰行业的人们都知道:沙头角是深圳的黄金饰品加工批发中心,中国最大的几家黄金饰品加工批发中心都集中在沙头角保税区的周围;而珠宝镶嵌和加工则一定要去位于深圳市罗湖区翠竹路周围的水贝、田贝,在那里集中了逾300家以上的珠宝首饰企业,是中国最大的珠宝首饰加工基地。 展开更多
关键词 珠江三角洲 珠宝首饰 专业市场 深圳市 水贝国际珠宝交易中心 核心地位 销售渠道
原文传递
Antitumor Actinity of Puqietinone,a Novel Alkaloid fromthe Bulbs of Fritillaria puqiensis
9
作者 李萍 王佾先 +1 位作者 徐国钧 徐珞珊 《Journal of Chinese Pharmaceutical Sciences》 CAS 1995年第4期217-220,共4页
从蒲圻贝母中分得的一种新生物碱蒲贝酮碱,按一定剂量灌胃给药,显示了强的抗小鼠艾氏腹水癌(EAS,实体型),宫颈癌(U_(14),实体型)及肝癌(HePA,实体型)的活性。
关键词 Fritillaria puqiensis Puqietinone Ehrlich ascites carcinoma cervical carcinoma HEPATOMA antitumor activity.Acknowledgement The expert secretarial assistance of Ms.Doris Yeung is gratefully ac-knowledged.
下载PDF
Fauna and standing crop of freshwater mussels in Poyang Lake, China 被引量:1
10
作者 XIONG Liufeng OUYANG Shan WU Xiaoping 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2012年第1期124-135,共12页
Freshwater mussels are a major component of the zoobenthos and they therefore play an important role in freshwater ecosystems. The community composition and the standing crop of freshwater mussels in Poyang Lake, the ... Freshwater mussels are a major component of the zoobenthos and they therefore play an important role in freshwater ecosystems. The community composition and the standing crop of freshwater mussels in Poyang Lake, the largest freshwater lake in China and one of two lakes connected to the Changjiang (Yangtze) River, were investigated from February 2008 to May 2009. Mussels were sampled in hydrologically and geographically distinct sampling areas. A total of 42 species and 13 genera were identified, of which 32 species were endemic to China. Two species, Unio douglasiae and Lamprotula caveata, dominated all sampling areas. The number of genera and species, and the number of species within each genus, differed significantly among sampling areas. Freshwater mussels were very abundant, with an overall density of 0.28±0.22 ind./m-' and biomass of 4.08±3.96 g/m^2. Significant variation observed among sampling areas and among genera was probably due to the variety of habitats among the areas sampled and to the adaptability of different freshwater mussels to environments. This study suggests that Poyang Lake and other freshwater lakes in the region are important sites of freshwater mussel biodiversity and conservation. 展开更多
关键词 FAUNA standing crop freshwater mussels freshwater lake Poyang Lake CONSERVATION
下载PDF
Kinetic study of alkaline protease 894 for the hydrolysis of the pearl oyster Pinctada martensii 被引量:1
11
作者 陈忻 陈华 +2 位作者 蔡冰娜 刘清钦 孙恢礼 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2013年第3期591-597,共7页
A new enzyme (alkaline protease 894) obtained from the marine extremophile Flavobacterium yellowsea (YS-80-122) has exhibited strong substrate-binding and catalytic activity, even at low temperature, but the character... A new enzyme (alkaline protease 894) obtained from the marine extremophile Flavobacterium yellowsea (YS-80-122) has exhibited strong substrate-binding and catalytic activity, even at low temperature, but the characteristics of the hydrolysis with this enzyme are still unclear. The pearl oyster Pinctada martensii was used in this study as the raw material to illustrate the kinetic properties of protease 894. After investigating the intrinsic relationship between the degree of hydrolysis and several factors, including initial reaction pH, temperature, substrate concentration, enzyme concentration, and hydrolysis time, the kinetics model was established. This study showed that the optimal conditions for the enzymatic hydrolysis were an initial reaction pH of 5.0, temperature of 30°C, substrate concentration of 10% (w/v), enzyme concentration of 2 500 U/g, and hydrolysis time of 160 min. The kinetic characteristics of the protease for the hydrolysis of P. martensii were obtained. The inactivation constant was found to be 15.16/min, and the average relative error between the derived kinetics model and the actual measurement was only 3.04%, which indicated a high degree of fitness. Therefore, this study provides a basis for the investigation of the concrete kinetic characteristics of the new protease, which has potential applications in the food industry. 展开更多
关键词 alkaline protease 894 Pinctada martensii kinetics model inactivation constant proteolysis rate degree of hydrolysis
下载PDF
Effects of temperature on keeping-alive without water and antioxidant enzyme of the rock scallop Crassadoma gigantea 被引量:2
12
作者 WANG Xiao CAO Shan-mao +2 位作者 LIU Gang WANG Yao ZOU Jian-wei 《Marine Science Bulletin》 CAS 2018年第1期1-20,共20页
Temperature was one of the key factors for the living environment of aquatic organisms, especially for shellfish. The effects of temperature was studied on the survival rate and the median lethal time (LT50) of the ... Temperature was one of the key factors for the living environment of aquatic organisms, especially for shellfish. The effects of temperature was studied on the survival rate and the median lethal time (LT50) of the rock scallop Crassadoma gigantea, and the effects of temperature stress on the antioxidant enzymes of rock scallop Crassadoma gigantea were studied in order to explore the effects of temperature on keeping-alive without water and antioxidant system of the rock scallop Crassadoma gigantea. The rock scallop Crassadoma gigantea (shell length (39.7± 5) mm) at different temperatures (5℃ and 15℃), humidity (moisture treatment, not moisturizing treatment) and oxygen (aerobic treatment, not aerobic treatment) in laboratory was studied by the survival analysis and the analysis of factors affecting the effects of the median lethal time (LTso) in order to investigate the effects of temperature on the survival rate and the median lethal time of the rock scallop Crassadoma gigantea. Results showed that low temperature, moisture and aerobic treatment can significantly improve the survival rate and the median lethal time of the rock scallop Crassadoma gigantea (P〈0.05). The effect of temperature on the survival rate and the median lethal time of the rock scallop Crassadoma gigantea was most significant, followed by the effect of oxygen, and that of humidity was the most weakest. Interaction between temperature and humidity, temperature and oxygen significant interaction(P〉0.05), and interaction between humidity and oxygen interaction was not significant (P〈0.05) in the interaction of three factors. It provided an important basis for the determination of the rock scallop Crassadoma gigantea in the seedling transportation time. In the article, the rock scallop Crassadoma gigantea larvae antioxidant enzymes activity was detected, including SOD activity,CAT activity ,T-A℃ activity (superoxide dismutase activity, catalase activity, total antioxidant capacity) changes through raising the temperature from the low temperature (5℃, 10℃, 15℃, 20℃, 25℃), to explore the change of the antioxidant enzymes activity under the influence of temperature on the rock scallop Crassadoma gigantea larvae. The SODactivity was significantly lower than that of the other groups (P〈0.05) at 5℃, and the CAT activity had no significant difference between groups (p=0.05), and the T - AOC level was the lowest significantly below 15℃, 25℃ (P〈0.05).The SOD and CAT activity had no significant difference in the same experimental time (P〉0.05), and the T - AOC activity temperature was significantly higher than the rest of the group (P=〈0.05) when temperature at 10℃ and 20℃. The SOD activity had no significant difference (P〉0.05)between groups at 25℃, and the CAT activity was significantly higher than 5℃ 10℃, 15℃ group (P〈0.05). The T-AOC activity was only lower than 15℃ group (P〉0.05). It indicated that the high temperature had a clear inducing effect on the CAT activity in the rock scallop Crassadoma gigantea larvae, and had a significant inhibitory effect on the T-AOC activity. The low temperature had a significant inhibitory effect on the activity of T-AOC in the tissue fluid of the scallop. The above results showed that the high and low temperature had a significant effect on the antioxidant enzymes activity of the rock scallop Crassadoma gigantea larvae. 展开更多
关键词 Crassadoma gigantea larvae the larvae TEMPERATURE keeping-alive withoutwater antioxidant enzyme activity
下载PDF
Variations in retention efficiency of bivalves to different concentrations and organic content of suspended particles 被引量:3
13
作者 张继红 方建光 梁兴明 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2010年第1期10-17,共8页
Retention efficiencies (RE) of scallop (Chlamys farreri),oyster (Crassostrea gigas) and mussel (Mytilus edulis) in a flow-through system were measured to understand the short-term response to various particle and orga... Retention efficiencies (RE) of scallop (Chlamys farreri),oyster (Crassostrea gigas) and mussel (Mytilus edulis) in a flow-through system were measured to understand the short-term response to various particle and organic matter concentrations.By comparing the RE of C.farreri with that of C.gigas and M.edulis,we gained further knowledge on the feeding physiological characteristics of C.farreri and ascertained the possible cause of high summer mortalities of this species.The experimental feeding conditions included natural differences in the abundance and composition of suspended seston,as well as conditions in which seston abundance and composition were manipulated by adding natural silt or cultured microalgae.The results show that in natural sea water,the minimum particle size for maximal retention in M.edulis,C.gigas and C.farreri was approximately 4,6,and 8 μm,respectively;the RE of 2-μm (equivalent spherical diameter) particles was 17%,19%,and 8%,respectively;and the relative standardized RE was 58%,49%,and 18%,respectively.In C.gigas and M.edulis,the minimal particle size for maximal retention did not change with food quality (organic content).C.farreri was more sensitive to fluctuations in particle concentration and organic content.With particle concentration increase,the minimal particle size for maximal retention in scallop shifted to large particles and the RE for 2-μm particle decreased from 8% in natural seawater to 1.6%-6% in silt-enriched groups.With organic content increase,the minimal particle size for maximal retention shifted from 8 to 5 μm in natural seawater.Variation in RE of C.farreri with food conditions and the relationship between lower RE and smaller particle size may hamper C.farreri from food taking due to the decrease in the size distribution of phytoplankton in Sungo Bay. 展开更多
关键词 retention efficiency Mytilus edulis Crassostrea gigas Chlamys farreri
下载PDF
Influence of Hydrothermal Pre-Treatment of Coal Fly on the Synthesis of Belite Phase
14
作者 N. Stevulova I. Filkova K. Baltakys 《Journal of Environmental Science and Engineering》 2011年第7期816-823,共8页
In this paper, the results of an extensive investigation of hydrothermal pre-treatment for synthesizing belite phase from reactive mixtures (CaO/SiO2 molar ratio of 2) consisting of one waste kinds (bottom ash-BA o... In this paper, the results of an extensive investigation of hydrothermal pre-treatment for synthesizing belite phase from reactive mixtures (CaO/SiO2 molar ratio of 2) consisting of one waste kinds (bottom ash-BA or fly ash-FA) from fluidised brown coal combustion in Slovakian power plant and CaO (analytical grade reagent) addition are summarized. Changes in structure and phase composition of hydrothermally synthesized belite precursors and subsequent calcinated products were compared with those of starting mixtures. Based on XRD diffraction patterns, the formation of the new profiles corresponding to CSH phases with low degree of ordering as belite precursors after hydrothermal treatment was confirmed. Calcination of hydrotermally treated products at 900℃ led to transformation of CSH phases to wollastonite, belite and gehlenite phase. Differences in phase composition of products before and after calcination depend upon waste quality and precursor's synthesis conditions. Bottom ash isn't suitable as raw material for synthesizing belite phase because of high CaO content fixed in anhydrite form (44.1%). Coal fly ash with low CaO content in anhydrite form (4.2%) and its hydrothermal treatment in combination with subsequent heating offer opportunities for the utilization of coal fly ash as raw material for belite production. 展开更多
关键词 Coal fly ash hydrothermal treatment CSH phase belite.
下载PDF
Arsenic Removal from Pinctada martensii Enzymatic Hydrolysate by Using Zr(Ⅳ)-Loaded Chelating Resin 被引量:2
15
作者 YANG Xiaoman DAI Wenjin +1 位作者 SUN Huili PAN Jianyu 《Journal of Ocean University of China》 SCIE CAS 2013年第3期392-396,共5页
The present study investigated the removal of inorganic arsenic from Pinctada martensii enzymatic hydrolysate through unmodified resin (D296) and Zr(IV)-loaded chelating resin (Zr-D401). By loading Zr to macropo... The present study investigated the removal of inorganic arsenic from Pinctada martensii enzymatic hydrolysate through unmodified resin (D296) and Zr(IV)-loaded chelating resin (Zr-D401). By loading Zr to macroporous chelating resin D401, the as exchange adsorption active sites are generated. This transforms D401 from a material that does not have the arsenic adsorption capacity into a material that has excellent arsenic exchange adsorption capacity. The static adsorption experiments were conducted to investigate the optimal removal condition for D296 and Zr-D401. The experimental results show that: the optimum condition for D296 is that T= 25℃, pH= 5, resin additive amount= 1 g (50 mL)-1, and contact time = 10 h, the corresponding arsenic removal rate being 65.7%, and protein loss being 2.33%; the optimum condition for Zr-D401 is that T=25 ℃, pH = 8, resin additive amount= 1 g (50 mL)-1, and contact time=10 h, the corresponding arsenic removal rate being 70.3%, and protein loss being 4.65%. These results show that both of the two resins are effective in arsenic removal for preserving useful substance. Our research provides scientific evidence and advances in the processing technology for heavy metal removal in shellfish. 展开更多
关键词 Pinctada martensii ENZYMOLYSIS arsenic removal chelating resin
下载PDF
Low-temperature Synthesis of Belite Cement from Reactive Mixtures Based on Coal Fly Ash 被引量:1
16
作者 Nadezda Stevulova Ivana Filkova Kestutis Baltakys 《Journal of Civil Engineering and Architecture》 2012年第2期189-196,共8页
This paper summarizes the selected results of an extensive investigation of application of two methods (hydrothermal and mechanochemical) assisted by calcination for synthesizing belite cement from reactive mixtures... This paper summarizes the selected results of an extensive investigation of application of two methods (hydrothermal and mechanochemical) assisted by calcination for synthesizing belite cement from reactive mixtures (CaO/SiO2 molar ratio of 2) consisting of various waste kinds from fluidized brown coal combustion in Slovakian power plant and CaO addition. Based on XRD diffraction patterns and infrared spectra ofpre-treatment products, the formation of the new profiles corresponding to CSH phases with low degree of ordering as belite precursors after hydrothermal treatment as well as metastables calcium silicates and aluminosilicates in mechanosynthesized products was confirmed. Calcination of hydrothermally treated products led to transformation of CSH phases to wollastonite (CS), belite and gehlenite phase, whereas creation oft^- and I^-C2S or wollastonite in milled reactive mixture took place. Differences in phase composition of products before and after calcination depend upon waste quality and precursor's synthesis conditions. Bottom ash isn't suitable as raw material for synthesizing belite phase because of high CaO content fixed in anhydrite form (44.1%). Coal fly ash with low CaO content in anhydrite form (4.2%) and its mechanochemical or hydrothermal treatment in combination with subsequent heating offer opportunities for the utilization of coal fly ash as raw material for belite production. 展开更多
关键词 Coal fly ash hydrothermal pre-treatment MECHANOSYNTHESIS belite.
下载PDF
Properties of Belite-Rich Portland Cement and Concrete in China 被引量:3
17
作者 Tongbo Sui Lei Fan +1 位作者 Zhaijun Wen Jing Wang 《Journal of Civil Engineering and Architecture》 2015年第4期384-392,共9页
Performances of belite-rich Portland cement, or HBC (high belite cement), and the resultant concrete are introduced by comparing with that of alite based PC (Portland cement) and concrete. The comparison study of ... Performances of belite-rich Portland cement, or HBC (high belite cement), and the resultant concrete are introduced by comparing with that of alite based PC (Portland cement) and concrete. The comparison study of cement properties indicates that HBC possesses the properties of less water demand for normal consistency, better compatibility with water reducer, higher later age strength after 28-day under standard curing temperature of 20 ℃, unique strength gain under elevated curing temperatures of 38-70 ℃, lower hydration heat evolution and temperature rise, lower drying shrinkage and excellent resistance to sulphate attack. These results have been demonstrated by the comparison performance evaluation of concretes prepared by HBC and PC in terms of workability, physical mechanical properties and durability when making high performance high strength concrete and massive concrete. 展开更多
关键词 Belite-rich Portland cement Portland cement performance comparison lower hydration better durability.
下载PDF
The phylogeny of native and exotic scallops cultured in China based on 16S rDNA sequences
18
作者 刘保忠 董波 +1 位作者 相建海 王在照 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2007年第1期85-90,共6页
Scallops of the Family Pectinidae are a valuable resource in marine industry of the world. Understanding the phylogeny of the family is important for the development of the industry. In this study, partial 16S mitocho... Scallops of the Family Pectinidae are a valuable resource in marine industry of the world. Understanding the phylogeny of the family is important for the development of the industry. In this study, partial 16S mitochondrial rDNA genes were obtained from 8 scallop species that are commonly cultured indigenous and transplanted species in China. Phylogenetic relationships of Pectinidae were analyzed based on the 8 sequences and other 5 published ones in GenBank, representing 9 genera of the family. The molecular phylogeny trees were constructed using 3 methods with software PHYLIP. The results showe that total 13 species of scallops clustered in 4 clades. Pecten maximus joins P. jacobaeus then Amusium pleuronectes in cluster, indicating close relationship of genus Amusium with Pecten in evolution. P. yes- soensis is close to Chlamys farreri and C. islandica. No enough material was available to single out genus Patinopecten as an independent monophyletic subfamily. The position of Adamussium colbecki indicates that it is far from genus Pecten but near to genus Chlamys in evolution. 展开更多
关键词 PECTINIDAE SCALLOP molecular phylogeny 16S rDNA
下载PDF
Risk-based water quality decision-making under small data using Bayesian network 被引量:3
19
作者 张庆庆 许月萍 +1 位作者 田烨 张徐杰 《Journal of Central South University》 SCIE EI CAS 2012年第11期3215-3224,共10页
A knowledge-based network for Section Yidong Bridge,Dongyang River,one tributary of Qiantang River,Zhejiang Province,China,is established in order to model water quality in areas under small data.Then,based on normal ... A knowledge-based network for Section Yidong Bridge,Dongyang River,one tributary of Qiantang River,Zhejiang Province,China,is established in order to model water quality in areas under small data.Then,based on normal transformation of variables with routine monitoring data and normal assumption of variables without routine monitoring data,a conditional linear Gaussian Bayesian network is constructed.A "two-constraint selection" procedure is proposed to estimate potential parameter values under small data.Among all potential parameter values,the ones that are most probable are selected as the "representatives".Finally,the risks of pollutant concentration exceeding national water quality standards are calculated and pollution reduction decisions for decision-making reference are proposed.The final results show that conditional linear Gaussian Bayesian network and "two-constraint selection" procedure are very useful in evaluating risks when there is limited data and can help managers to make sound decisions under small data. 展开更多
关键词 water quality risk pollution reduction decisions Bayesian network conditional linear Gaussian Model small data
下载PDF
Bayesian multi-model projections of extreme hydroclimatic events under RCPs scenarios
20
作者 SUN Qiao-Hong XIA Jun +1 位作者 MIAO Chi-Yuan DUAN Qing-Yun 《Advances in Climate Change Research》 SCIE CSCD 2017年第2期80-92,共13页
A Bayesian multi-model inference framework was used to assess the changes in the occurrence of extreme hydroclimatic events in four major river basins in China (i.e., Liaohe River Basin, Yellow River Basin, Yangtze R... A Bayesian multi-model inference framework was used to assess the changes in the occurrence of extreme hydroclimatic events in four major river basins in China (i.e., Liaohe River Basin, Yellow River Basin, Yangtze River Basin, and Pearl River Basin) under RCP2.6, RCP4.5, and RCP8.5 scenarios using multiple global climate model projections from the IPCC Fifth Assessment Report. The results projected more summer days and fewer frost days in 2006-2099. The ensemble prediction shows the Pearl River Basin is projected to experience more summer days than other basins with the increasing trend of 16.3, 38.0, and 73.0 d per 100 years for RCP2.6, RCP4.5 and RCP8.5, respectively. Liaohe River Basin and Yellow River Basin are forecasted to become wetter and warmer with the co-occurrence of increases in summer days and wet days. Very heavy precipitation days (R20, daily precipitation ≥20 mm) are projected to increase in all basins. The R20 in the Yangtze River Basin are projected to have the highest change rate in 2006-2099 of 1.8, 2.5, and 3.8 d per 100 years for RCP2.6, RCP4.5 and RCP8.5, respectively. 展开更多
关键词 Bayesian inference Extreme events Climate change projection RCPs scenarios
下载PDF
上一页 1 2 下一页 到第
使用帮助 返回顶部