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Southern rice black-streaked dwarf virus:A new proposed Fijivirus species in the family Reoviridae

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Chinese Science Bulletin 2008年第23期53卷 3677-3685页

作者： ZHOU GuoHui WEN JingJung CAI DeJiang LI Peng xu donglin ZHANG ShuGuang Laboratory of Plant Virology South China Agricultural University Guangzhou 510642 China Plant Protection Station Agricultural Department of Hainan Province H-aikou 570003 China

For the past several years, a novel dwarf disease has been observed on rice (Oryza sativa) in some regions of Guangdong Province and Hainan Province, southern China. Infected plants showed stunting, dark leaf and small enations on stem and leaf back. Typical Fijivirus viroplasma containing crystalline arrayed spherical virons approximately 70―75 nm in diameter and tubular structures were detected in ultrathin sections by an electron microscope in parenchyma phloem cells of the infected plants. The virus was transmitted to rice seedlings by white-backed planthoppers, Sogatella furcifera (Hemiptera: Delphacidae), collected in the diseased fields. Analysis of dsRNA extracts from infected plants revealed ten linear segments, which were similar to the electrophoretic profile of Rice black-streaked dwarf virus (RBSDV). RT-PCR with a single primer which matched to a linker sequence ligated to both 3′ ends of the viral genomic dsRNAs resulted in amplification of genome segments 9 (S9) and 10 (S10) cDNA products. The complete nucleotide sequences of S9 and S10 were obtained from clones of the RT-PCR amplicon exhibited characteristic properties of Fijivirus including low GC content (34.5% and 35.6%), genus conserved 5′ and 3′ termini sequences and similar genome organization. Blast searches indicated that the sequences of S9 and S10 shared 68.8%―74.9% and 67.1%―77.4% nucleotide identities with those of viruses in the Fijivirus group 2, respectively. These values were similar to those among other viruses in the Fijivirus group 2 and considerably lower than those among RBSDV isolates. Phylogenetic trees based on S9 and S10 nucleotide sequences and their putative amino acid sequences showed that this virus represented a separate branch among other Fijiviruses. The virus was also detected by a nested RT-PCR assay in corn (Zea mays), barnyard grass (Echinochloa crusgalli), Juncellus serotinus and flaccidgrass (Pennisetum flaccidum) in and/or adjacent to the infected rice fields. I

关键词：水稻矮化病基因组染色体预防措施

OBSERVATION ON GENERATION Z'S SPRING FESTIVAL CONSUMPTION

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Good Neighbours 2022年第2期 32-37页

作者： xu donglin(Translated) 不详

With China's generation Z(people born between 1995 and 2009)gradually becoming the main force of consumption,the consumption ideas of the youngsters are deeply affecting the consumer market:semi-finished products are transformed into fancy New Year's Evedinner;traditional Chinese culture with tiger elements wins the heart of buyers;board roleplaying games(BRPG)and jubensha,or"script murder,"a role-playing murder mystery game,become popular entertainments.

关键词：春节消费变身消费市场文化强势年轻人

CHINESE SPRING FESTIVAL CELEBRATED AROUND THE GLOBE

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Good Neighbours 2022年第2期 22-25页

作者： xu donglin(Translated) 不详

Recently various forms of cultural activities have been held in many countries around the globe to celebrate the arrival of the Spring Festival of the Year of the Tiger in the Chinese lunar *** February 2,the Chinese Cultural Centerin Paris launched a special program called"literature and art of China"onits official website and online platform to offer wonderful cultural programs to Chinese nationals and students in France and extend New Year greetings to overseas Chinese all over the world.

关键词：文化中国活动春节庆祝

TRADITIONAL CHINESE FOOD OFFERED ON WINTER OLYMPIC MENU

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Good Neighbours 2022年第1期 52-53页

作者： xu donglin(Translated) 不详

The accommodation and catering preparations for the Beijing Winter Olympic Games are progressing in an orderly manner according to the press conference held in Shougang Park,Biing on December 10,*** the games,high-quality catering services with Chinese characteristics and warm,harmonious and convenient accommodation experience will be provided.

关键词：餐饮服务烤鸭春卷北京首钢元宵美食发布会有序推进

WHEN THE WINTER OLYMPIC GAMES COINCIDES WITH THE SPRING FESTIVAL

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Good Neighbours 2022年第2期 38-41页

作者： xu donglin(Translated) 不详

The Beijing Winter Olympic Games kicked off on February 4,coinciding with the joyous and festive Chinese Lunar New Year,or the Spring *** day is also"the Beginning of Spring",one of the 24 Chinese traditional solar te... 详细信息

关键词：木垒哈萨克自治县二十四节气赛里木湖迎新年洛浦县北京冬奥会冬奥

WORLD LEADERS EXTEND CHINESE NEW YEAR GREETINGS

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Good Neighbours 2022年第2期 20-21页

作者： xu donglin(Translated) 不详

On the occasion of the Chinese LunarNew Year,or the Spring Festival,leaders from around the world have sent festive greetings to wish the Chinese people happiness and health and the country prosperity.

关键词：联合国秘书长外国政要幸福安康气候危机特雷斯祝福坚韧不拔繁荣昌盛

ICE&SNOW TOURISM BOOMS IN XINJIANG

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Good Neighbours 2022年第1期 56-61页

作者： Zhang Xiaomi xu donglin(Translated) 不详

Various tourism events throughout winter,such as the ones for winter fishing,rime appreciation,snow and ice tours and winter food court,have become highlights across northwest China's Xinjiang Uygur Autonomous Region.

关键词：冰雪旅游旅游节庆美食节新疆

简化齐大山选矿厂浮选车间工艺流程的试验研究

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金属矿山 2001年第6期30卷 34-36,44页

作者：徐冬林齐大山选矿厂

齐大山选矿厂采用阶段磨矿 -粗细分级 -重磁浮联合工艺流程 ,细粒部分存在流程较长 ,技术指标不理想的问题。为此 ,选厂采用DGYC - 180 0 -Ⅳ型多元高梯度永磁强磁选机进行了简化流程的工业试验 ,结果表明 :技术上可行 ,若全部推广 ,每... 详细信息

齐大山选矿厂采用阶段磨矿 -粗细分级 -重磁浮联合工艺流程 ,细粒部分存在流程较长 ,技术指标不理想的问题。为此 ,选厂采用DGYC - 180 0 -Ⅳ型多元高梯度永磁强磁选机进行了简化流程的工业试验 ,结果表明 :技术上可行 ,若全部推广 ,每年可创效益 796 5

关键词：阶段磨矿-粗细分级-重磁浮联合工艺流程 DGYC-1800-Ⅳ高梯度永磁磁选机铁矿选矿厂浮选车间工业试验

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数据挖掘技术在电信客户分析中的应用

微计算机信息 2007年第24期23卷 175-176,85页

作者：徐冬琳苏州职业大学远程教育学院

本文在研究数据挖掘技术和电信客户分析系统的基础上,研究和提出了基于粗糙集等价关系的电信客户分析系统,本系统所采用的核心算法,是结合电信行业特点,对传统Apriori关联规则挖掘算法的改进,利用粗糙集等价关系的概念进行关联规则的挖... 详细信息

本文在研究数据挖掘技术和电信客户分析系统的基础上,研究和提出了基于粗糙集等价关系的电信客户分析系统,本系统所采用的核心算法,是结合电信行业特点,对传统Apriori关联规则挖掘算法的改进,利用粗糙集等价关系的概念进行关联规则的挖掘。构建了其在电信客户分析中的应用模型,并作为某电信公司客户分析系统的核心部件投入使用,取得了较好的应用效果。

关键词：数据挖掘客户分析客户关系管理