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诚信为本,优质服务——茂名进达汽车
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作者 王云飞 《广东交通》 2017年第3期50-50,共1页
茂名市进达汽车有限公司创立于1997年,是进达集团公司旗下以经营高、中、低档全品牌汽车销售及售后服务为主的二级企业,是目前粤西地区最大的汽车贸易中心。进达集团公司实力雄厚,是一个跨地区、跨行业、国际性的大型民营企业,先后在广... 茂名市进达汽车有限公司创立于1997年,是进达集团公司旗下以经营高、中、低档全品牌汽车销售及售后服务为主的二级企业,是目前粤西地区最大的汽车贸易中心。进达集团公司实力雄厚,是一个跨地区、跨行业、国际性的大型民营企业,先后在广东茂名、贵州贵阳、都匀、广东深圳四地,开设9家分公司,行业涉及石油化工、房地产开发、电子高新技术和汽车贸易四大行业,总资产逾5亿元,为进达汽车广场的持续快速发展提供了强大的资金后盾。进达汽车公司注册资金1000万元,流动资金3000万元。 展开更多
关键词 汽车 广场 茂名 进达 诚信
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首批摩托罗拉八达捷进型寻呼机交付用户
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《中国无线通信》 1996年第6期46-46,共1页
关键词 摩托罗拉 型寻呼机 无线通信 通信技术
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你的名字对我很重要
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作者 谢芳 《基础教育论坛》 2012年第9X期64-64,共1页
开学了,新接了一个班,孩子们遵守纪律,听讲认真,发言积极,一切都那么顺当,我暗暗欣喜。不过,学生太多,一段时间下来,我还无法准确叫出每一个人的姓名,有时我热情邀请:"来,请你说一下。"就会出现前后或左右两个同学面面相觑:&q... 开学了,新接了一个班,孩子们遵守纪律,听讲认真,发言积极,一切都那么顺当,我暗暗欣喜。不过,学生太多,一段时间下来,我还无法准确叫出每一个人的姓名,有时我热情邀请:"来,请你说一下。"就会出现前后或左右两个同学面面相觑:"谁,叫我吗?老师,你请谁?"有个别胆大的学生埋怨我:"老师。 展开更多
关键词 你怎么知道 思想素质 思品课 毫不松懈 进达 扬帆远航 文化知识 对我说
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STABILITY AND PERIODIC SOLUTIONS OF VOLTERRA INTEGRO-DIFFERENTIAL LARGE-SCALE SYSTEMS
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作者 斯力更 马万彪 《Acta Mathematica Scientia》 SCIE CSCD 1990年第3期265-280,共16页
In this paper, we establish first a vector integro-differential inequality. Then by using the intequlity and the variation of constants formula to obtain some sufficient algebraic criteria for the stability and period... In this paper, we establish first a vector integro-differential inequality. Then by using the intequlity and the variation of constants formula to obtain some sufficient algebraic criteria for the stability and periodic solutions of a class of Volterra integro-differential largo-scale systems. Finally, some simple examples of application are given. 展开更多
关键词 algebraic INEQUALITY VOLTERRA CONSTANTS UNIFORMLY proof 主桩 进达 鲁鲁 月主
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Expression and Phylogenetic Analysis of Pea Actin Isoforms 被引量:5
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作者 江元清 赵武玲 《Acta Botanica Sinica》 CSCD 2002年第12期1456-1461,共6页
Pea ( Pisum sativum Linn.) actin gene family contains at least three isoforms (PEAcⅠ, PEAcⅡand PEAcⅢ), and the DNA sequence of these isoforms show high similarity in the coding regions and significant divergence... Pea ( Pisum sativum Linn.) actin gene family contains at least three isoforms (PEAcⅠ, PEAcⅡand PEAcⅢ), and the DNA sequence of these isoforms show high similarity in the coding regions and significant divergence in the untranslated regions. RT_PCR and Southern blotting using 3′_untranslated region (3′_UTR) as specific probe revealed that pea isoactin genes were expressed in roots, stems, leaves, tendrils, pollen and juvenile siliques, but displayed different patterns of transcript accumulation. Two_fold serial dilution electrophoresis showed PEAcⅠ mRNA preferentially accumulated in rapidly developing tissues: it peaked in seven days' stem; remained at a rather high level in leaves within a month but decreased significantly later; varied a little in tendrils and reached a median and a very low level respectively in juvenile siliques and in pollen. PEAcⅡ displayed somewhat similar expression pattern to PEAcⅠ. The observed differences in sequences and transcript accumulation patterns suggest that the individual pea actin genes may differ in their transcriptional regulation and cellular function. Phylogenetic tree of actins showed that pea actin isoforms are as diverged from each other as they are from other plant actins, and pea actins might have originated from a common ancestor before the divergence of the dicot and monocot plants. 展开更多
关键词 ACTIN 3′_untranslated region (3′_UTR) differential expression molecular evolution pea ( Pisum sativum )
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Sex Expression and the Evolutionary Advantages of Male Flowers in an Andromonoecious Species, Sagittaria guyanensis subsp. lappula (Alismataceae) 被引量:4
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作者 黄双全 宋旎 +2 位作者 汪泉 唐璐璐 汪小凡 《Acta Botanica Sinica》 CSCD 2000年第11期1108-1114,共7页
Sex expression in Sagittaria guyanensis H.B.K. subsp. lappula (D. Don) Bojin is typically andromonoecious while the other species in the same genus are basically monoecious. The evolutionary advantages of male... Sex expression in Sagittaria guyanensis H.B.K. subsp. lappula (D. Don) Bojin is typically andromonoecious while the other species in the same genus are basically monoecious. The evolutionary advantages of male flowers and hermaphrodite flowers in S. guyanensis subsp. lappula were assessed by measuring sex allocation and pollen movements in two wild populations of the species. Two cultivated populations served as controls. The percentage of male flowers was very low in the two wild populations in Dongxiang, Jiangxi Province and Wuyishan, Fujian Province, viz., 2.48% and 0.96% respectively. In the two cultivated populations, male flower percentage significantly increased when the soil was of higher nutrient content. This indicates that the allocation to male versus female reproduction might change in response to environmental factors. Pollen production per male flower was 4.1 times higher than that of a hermaphrodite flower. The floral shape and size of male and hermaphrodite flowers were similar. No difference was observed between these dimorphological flowers in pollen germination rate in vitro and in the speed of pollen tube growth in vivo . Anthesis was only 4-5 h. Male flowers usually opened 0.5 h earlier than hermaphrodite flowers. An unexpected finding was that no pollen from the male flowers was found on the stigmas of the hermaphrodite flowers, in spite of the occasional visits by insects to both types of flowers in both wild and control populations. A consistent pattern of fruit development was found to exist in open pollinated flowers as well as in flowers that had been bagged. The sex ratios did not have significant influence on fruit set. Approximately 25% of the pistils in a gynoecium failed to develop into fruits because no pollen was deposited on them, indicating that the fruit set of this andromonoecious plant is mainly affected by pollen limitation rather than resource limitation. Reproduction in S. guyanensis subsp. lappula in the habitats was dependent on self_pollination in hermaphrodite flowers. The male flowers in this species might be a potential source of additional pollination and may facilitate cross_pollination. The fact that the flowers of monoecious species in Sagittaria pollinated by a wide diversity of insect visitors may contribute enormously to the diversification of sex expression in this genus. 展开更多
关键词 Sagittaria guyanensis subsp. lappula sex expression ANDROMONOECY evolutionD
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Research Progress on Mechanized Mixed Sowing Seed Production Technology of Hybrid Rice 被引量:4
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作者 张德文 《Agricultural Science & Technology》 CAS 2017年第5期924-929,939,共7页
Hybrid rice planting has been widely popularized and applied in the world. However, the high cost of seed production and the complicated procedures have become a bottleneck in the development of hybrid rice. The resea... Hybrid rice planting has been widely popularized and applied in the world. However, the high cost of seed production and the complicated procedures have become a bottleneck in the development of hybrid rice. The research progress on mixed sowing seed production techniques of hybrid rice was introduced from the aspects of rice resources creation, breeding, sowing seed technology research and cost benefit analysis. The production technology of the new mixed seeding combina- tion "Xinhunyou 6" was investigated, including the research and validation of benta- zon treatment period and dosage, mixing ratio of male and female parents, and the comparative test of different different sowing methods, which revealed that the mechanization technology of seed production of hybrid rice was mature and feasible and would be one of the most important development trend of technological devel- opment of hybrid rice production. 展开更多
关键词 Hybrid rice Mechanized seed production Glume color marker gene BENTAZON Research progress
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铅山在深圳兴办合资厂
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《老区建设》 1992年第8期24-24,共1页
铅口县与港方合资在深圳兴办“深圳进达服装有限公司”,为期20年,享有特区全部优惠政策。公司不仅可以自行组织生产和销售。
关键词 合资厂 优惠政策 进达 铅山县
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Compensation for the Influence of Radar-Target Relative Speed on Step Frequency MMW Target Identification
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作者 杨军 祁载康 《Journal of Beijing Institute of Technology》 EI CAS 1998年第4期380-387,共8页
Aim To study the influence of radar-target relative speed on frequency MMW high-resolution ore-dimension distance profile and the compensation for it. Methods Based on the distance travelled by the electromagnetic wa... Aim To study the influence of radar-target relative speed on frequency MMW high-resolution ore-dimension distance profile and the compensation for it. Methods Based on the distance travelled by the electromagnetic wave, analyses were made for the compensation algorithm and the expression of the inverse FFT base distance was given.The relative importance of different compensation terms was studied in great detail. The concept of searching compensation was put forward. Results and Condclusion Dcm-△Dvimis the be distance of inverse FFT transformation, the effect caused by the distance △Dim on one-dimension profile is negligible, and the effect caused by the distance Dvim should not be neglected and must be compensated. 展开更多
关键词 MMW millimeter wave radar step frequency one-dimension distance profile velocity compensation
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辽宁省煤矿建设局去年实行了承发包合同制
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《煤炭经济研究》 1982年第3期47-,共1页
去年,辽宁省煤矿建设局在全局实行了承发包合同制。由于狠抓了经济责任制,加强了经营管理,在大桥立井施工中,摸索了一套在沈北软岩中施工的经验,主、副、风三个井筒平均月进29.7米,最高月进达51.5米;合格品率达100%,优良品率达73%;降低... 去年,辽宁省煤矿建设局在全局实行了承发包合同制。由于狠抓了经济责任制,加强了经营管理,在大桥立井施工中,摸索了一套在沈北软岩中施工的经验,主、副、风三个井筒平均月进29.7米,最高月进达51.5米;合格品率达100%,优良品率达73%;降低成本25.9万元,创出了在沈北特殊软岩中施工的最好水平。我们体会到,实行承发包合同制对施工企业增强经济责任心。 展开更多
关键词 承发包合同 煤矿建设 合格品率 施工企业 降低成本 承包项目 良品率 进达 经营管理 工程质量
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曝光台
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《环境》 2015年第12期50-51,共2页
东莞市常平镇桥沥万科城附近居民投诉称,位于该地的鹏进达沥青厂,经常偷排废气,严重影响居民日常生活。东莞常平环保局对该沥青厂进行核查发现,该公司未经环保部门审批同意,擅自增加沥青混合料搅拌设备,未配套污染防治设施。执法人员现... 东莞市常平镇桥沥万科城附近居民投诉称,位于该地的鹏进达沥青厂,经常偷排废气,严重影响居民日常生活。东莞常平环保局对该沥青厂进行核查发现,该公司未经环保部门审批同意,擅自增加沥青混合料搅拌设备,未配套污染防治设施。执法人员现场责令该公司禁止使用新增设备,并确保在生产过程中,污染防治设施正常运转,所有生产废气经收集处理后排放。 展开更多
关键词 污染防治设施 曝光台 东莞市常平镇 居民日常生活 反映说 排放状况 收集处理 进达 万科 生产过程
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宁波市人民政府关于胡望荣等职务任免的通知
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《宁波市人民政府公报》 2015年第1期33-33,共1页
甬政干[2015]2号任命:胡望荣为宁波市人民政府副秘书长(正局长级);金伟平为宁波市人民政府副秘书长,免去其宁波市铁路建设指挥部副指挥、宁波铁路枢纽工程建设指挥部副指挥职务;张南芬为宁波国家高新技术产业开发区管理委员会(宁波新材... 甬政干[2015]2号任命:胡望荣为宁波市人民政府副秘书长(正局长级);金伟平为宁波市人民政府副秘书长,免去其宁波市铁路建设指挥部副指挥、宁波铁路枢纽工程建设指挥部副指挥职务;张南芬为宁波国家高新技术产业开发区管理委员会(宁波新材料科技城管理委员会)主任:郑进达为宁波市机关事务管理局局长; 展开更多
关键词 金伟平 职务任免 新材料科技 铁路建设 事务管理局 经济合作 李强 铁路枢纽 中共宁波市委 进达
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Expansion of the Actin Gene Family in Amphioxus
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作者 魏云虎 张煜珺 +1 位作者 陈源 毛炳宇 《Zoological Research》 CAS CSCD 北大核心 2009年第5期473-479,共7页
Actins are a small family of ubiquitous proteins that are essential cytoskeletal components and are highly conserved during evolution. Actins are usually divided into two classes, the cytoplasmic and muscle actins, wh... Actins are a small family of ubiquitous proteins that are essential cytoskeletal components and are highly conserved during evolution. Actins are usually divided into two classes, the cytoplasmic and muscle actins, which have different functional roles. Here we systematically analyzed the actin genes in the genome of the primitive chordate amphioxus (Branchiostoma floridae). We found that amphioxus contains more than 30 actin genes, many of which are linked. Phylogenetic analysis suggests the amphioxus actin genes have clearly undergone extensive expansion through tandem duplications. The actin genes' structure also varies a lot, containing 2 to 7 exons. We also cloned two muscle type of actin genes from the amphioxus (B. belcheri) and compared their expression patterns during early development. The slight difference in their expression suggests functional diversification of these actin genes. Our results shed light on the evolution both of actin genes themselves and their functional roles in chordate development. 展开更多
关键词 AMPHIOXUS ACTIN Gene family EVOLUTION Expression pattern
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Deep-Hole Inner Diameter Measuring System Based on Non-contact Capacitance Sensor 被引量:3
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作者 于永新 张恒 +1 位作者 王宗超 常以哲 《Transactions of Tianjin University》 EI CAS 2010年第6期447-451,共5页
A precise aperture measuring system of small deep holes with capacitance sensors is presented. Based on the working principle of non-contact capacitance sensors, influence of the edge effect of gauge head is studied, ... A precise aperture measuring system of small deep holes with capacitance sensors is presented. Based on the working principle of non-contact capacitance sensors, influence of the edge effect of gauge head is studied, and one capacitance sensor for measuring the aperture of the small blind holes or through holes is introduced. The system is composed of one positioning device, one aperture measuring capacitance sensor, one measuring circuit, and software. This system employs visual CCD and two-dimensional mic... 展开更多
关键词 deep-hole measurement NON-CONTACT CCD stepping motor precise positioning
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Molecular Characterization of Four ADF Genes Differentially Expressed in Cotton 被引量:4
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作者 张成伟 郭林林 +4 位作者 王秀兰 张辉 石海燕 许文亮 李学宝 《Journal of Genetics and Genomics》 SCIE CAS CSCD 北大核心 2007年第4期347-354,共8页
Actin depolymerizing factor (ADF), highly conserved in all eukaryotic cells, is a low molecular mass of actin-binding protein, which plays a key role in modulating the polymerizing and depolymerizing of the actin fi... Actin depolymerizing factor (ADF), highly conserved in all eukaryotic cells, is a low molecular mass of actin-binding protein, which plays a key role in modulating the polymerizing and depolymerizing of the actin filaments. Four cDNAs (designated GhADF2, GhADF3, GhADF4, and GhADF5, respectively) encoding ADF proteins were isolated from cotton (Gossypium hirsutum) fiber cDNA library. GhADF2 cDNA is 705 bp in length and deduces a protein with 139 amino acids. GhADF3 cDNA is 819 bp in length and encodes a protein of 139 amino acids. GhADF4 cDNA is 804 bp in length and deduces a protein with 143 amino acids. GhADF5 cDNA is 644 bp in length and encodes a protein of 141 amino acids. The molecular evolutionary relationship of these genes was analyzed by means of bioinformatics. GhADF2 is closely related to GhADF3 (99% identity) and PetADF2 (89% identity). GhADF4 is closely related to AtADF6 (78% identity), and GhADF5 is closely related to AtADF5 (83% identity). These results demonstrated that the plant ADF genes are highly conserved in structure. RT-PCR analysis showed that GhADF2 is predominantly expressed in fiber, whereas, GhADF5 is mainly expressed in cotyledons. On the other hand, it seems that GhADF3 and GhADF4 have no tissue specificity. Expression levels of different ADF genes may vary considerably in the same cell type, suggesting that they might be involved in regulating tissue development of cotton and the each ADF isoform may diverge to form the functional difference from the other ADFs during evolution. 展开更多
关键词 cotton ADF gene actin-depolymerizing factor sequence analysis molecular evolution gene different expression
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RESEARCH ON MOTION COMPENSATION FOR HIGH RESOLUTION PROFILE OF EXTENDED TARGET FOR STEPPED CHIRP RADAR AND DSP IMPLEMENTATION 被引量:1
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作者 Jiang Bin He Xiang +1 位作者 Wang Hongqiang Guo Guirong 《Journal of Electronics(China)》 2007年第2期191-198,共8页
A discrete model is set up for High Resolution Range Profile (HRRP) of an extended target and the model of echo from an extended target for a Stepped Chirp Radar (SCR) is proposed. The effect of target motion on a ran... A discrete model is set up for High Resolution Range Profile (HRRP) of an extended target and the model of echo from an extended target for a Stepped Chirp Radar (SCR) is proposed. The effect of target motion on a range profile is thoroughly analyzed, and based on which precision re- quirement is developed for motion compensation. By studying the time domain correlation and the rule based on the least burst error, a motion compensation algorithm which satisfies the project requirement is presented, and the cyber-emulation confirms the conclusion. At last the processor is designed by using DSP devices to realize motion compensation and target recognition. 展开更多
关键词 Stepped chirp radar High Range Resolution Profile (HRRP) Motion compensation The least burst error rule DSP implementation
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A Nucleus-encoded Topological Specificity Factor PpMinE in Physcomitrella patens has Conserved Function Similar to Its Chloroplast-encoded Ancestor
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作者 朱佳瑛 刘维仲 +2 位作者 周伟巍 胡勇 何奕昆 《Journal of Genetics and Genomics》 SCIE CAS CSCD 北大核心 2007年第3期229-238,共10页
A nucleus-encoded MinE gene, designated PpMinE, from Physcomitrella patens was identified using RT-PCR. The presence of both N- and C-terminal extensions in PpMinE protein suggested its cyanobacterial origin. The tran... A nucleus-encoded MinE gene, designated PpMinE, from Physcomitrella patens was identified using RT-PCR. The presence of both N- and C-terminal extensions in PpMinE protein suggested its cyanobacterial origin. The transient expression of PpMinE using green fluorescent protein fusion in tobacco (Nicotiana tabacum L.) indicated that the PpMinE was a chloroplast-targeted protein. Overexpression of PpMinE in Escherichia coli caused division site misplacement and minicell formation, suggesting evolutionary functional conservation of MinE during plant phylogenesis. According to the phylogenetic tree, PpMinE protein has a close relationship with the highland plants, which suggests that the transfer events of MinE gene from plastid to nucleus might have occurred before the origin of the land plants. 展开更多
关键词 Physcomitrella patens plastid division PpMinE lateral gene transfer (LGT) evolution transient expression
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Characterization of defensin gene from abalone Haliotis discus hannai and its deduced protein 被引量:1
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作者 洪旭光 孙修勤 +3 位作者 郑明刚 曲凌云 昝金东 张进兴 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2008年第4期375-379,共5页
Defensin is one of preserved ancient host defensive materials formed in biological evolution. As a regulator and effector molecule, it is very important in animals' acquired immune system. This paper reports the defe... Defensin is one of preserved ancient host defensive materials formed in biological evolution. As a regulator and effector molecule, it is very important in animals' acquired immune system. This paper reports the defensin gene from the mixed liver and kidney cDNA library of abalone Haliotis discus hannai Ino. Sequence analysis shows that the gene sequence of full-length cDNA encodes 42 mature peptides (including six Cys), molecular weight of 4 323 Da, and pI of 8.02. Amino acid sequence homology analysis shows that the peptides are highly similar (70% in common) to other insects defensin. Because of a typical insect-defensin structural character of mature peptide in the secondary structure, the polypeptide named Haliotis discus defensin (hd-def), a novel of antimicrobial peptides, belongs to insects defensin subfamily. The RT-PCR result of Haliotis discus defensin shows that the gene can be expressed only in the hepatopancreas by Gram-negative and positive bacteria stimulation, which is ascribed to inducible expression. Therefore, it is revealed that the Haliotis discus defensin gene expression was related to the antibacterial infection of Haliotis discus hannai Ino. 展开更多
关键词 gene expression abalone defensin (hd-def) Haliotis discus hannai
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A study on the overexpression of microRNAs and lung cancer
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作者 Longfeng Xu Zhiping Wu +4 位作者 Yan Chen Rui Feng Chun Hou Fan Yang Qishun Zhu 《The Chinese-German Journal of Clinical Oncology》 CAS 2013年第9期443-447,共5页
MicroRNAs(miRNAs),which contains approximately 22 nt,belong to a small endogenous,non-coding regulatory single-stranded RNA molecules.They are posttranscriptional regulators of gene expression and highly conserved in ... MicroRNAs(miRNAs),which contains approximately 22 nt,belong to a small endogenous,non-coding regulatory single-stranded RNA molecules.They are posttranscriptional regulators of gene expression and highly conserved in evolution.Many researches show that miRNAs involved in many processes,including tumor formation,cell proliferation and apoptosis and proliferation and metastasis of cancer cells.Among that,the relationship between miRNAs and lung cancer is one of the most focal areas for the researchers,because the abnormal expressions of miRNAs were significantly associated with the occurrence and development of lung cancer.The expression level of different miRNAs in lung cancer cells exist differences,compared with normal lung tissue cells,there are two classes of expression:over-expression level and low expression level.In this review,we focused on studying the mechanism of overexpression miRNAs in lung cancer. 展开更多
关键词 OVEREXPRESSION microRNAs (miRNAs) lung cancer
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Design optimization of a slotless PM brushless motor with helical edge wound laminations for rim driven thrusters 被引量:4
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作者 Sharkh S M Lai S H 《High Technology Letters》 EI CAS 2010年第1期70-79,共10页
This paper discusses the analysis and design of a very thin slotless permanent magnet (PM) brushless motor whose stator laminations are manufactured from a single strip of steel that is edge wound into a spiral (li... This paper discusses the analysis and design of a very thin slotless permanent magnet (PM) brushless motor whose stator laminations are manufactured from a single strip of steel that is edge wound into a spiral (like a "Slinky") and then fitted over the windings that are preformed on the outside surface of a non-conducting former. Analytical and finite element analysis (FEA) are used to determine the con- strained optimum dimensions of a motor used to drive a rim driven thruster in which the motor rotor is fit- ted onto the rim of the propeller and the stator is encapsulated in the thin Kort nozzle of the thruster. The paper describes the fabrication of a demonstrator motor and presents experimental results to validate the theoretical calculations. Experimental motor performance results are also reported and compared with those of a slotted motor that fits within the same active radial dimensions as the slotless motor. The slotless motor, which has longer active length and endwindings, and thicker magnets than the slotted motor, was found to be less efficient and more expensive (prototype cost) than the slotted machine. 展开更多
关键词 slotless brushless permanent magnet (PM) motor edge-wound laminations rim driven thruster
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