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Market Scale, Home Market Effect and Evolution of Spatial Economic Structure: China's Regional Coordinated Development on Different Spatial Scales

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当代财经 2013年第S1期 69-79页

作者： chen jian-sheng LI Wen-yu Southwestern University of Finance and Economics School of Economics

By using a new economic geography model of multi-region to study the impact of market scale on spatial economic structure,we find that the home market effect plays a key role in *** different development periods,under external shocks such as transportation costs and so on,industry shares will change due to the distribution of market *** spatial economic structure will gradually evolve into such forms as single core or dual-core structure,especially"central collapse"will be found in the *** results can be used to analyze the practical problems,including the"central collapse"in the east,central and west regions of China,the structure of city clusters,*** the rapid development of transportation infrastructures,China will form a variety of development patterns on different spatial scales owing to home market *** regional convergence can be reached through reducing the economic distance and promoting agglomerative economies,which will help achieve regional coordinated development.

关键词： new economic geography home market effect market scale multi-region model spatial economic structure

Effect of Gluten on Pasting Properties of Wheat Starch

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Agricultural Sciences in China 2010年第12期9卷 1836-1844页

作者： chen jian-sheng DENG Zhi-ying WU Peng TIAN Ji-chun XIE Quan-gang State Key Laboratory of Crop Biology/Group of Wheat Quality Breeding Shandong Agricultural University Tai 'an 271018 P.R. China College of Food Science and Engineering Shandong Agricultural University Tai'an 271018 P.R.China

The effect of gluten on pasting properties of wheat starch was studied to provide a scientific basis for the application of gluten in food production and quality improvement in wheat breeding. The pasting properties of blends were analyzed using PH 1391 wheat starch mixed with five different additions of three kinds of gluten （strong-, medium-, and weak-gluten） and the structures of network were observed with microscope. The significant downtrends of peak viscosity, trough viscosity, final viscosity, area of viscosity, setback, and peak time were observed with the increase in the addition of gluten. In general, the average value of them decreased respectively by 3.6, 4.8, 3.4, 3.8, 4.0, and 1.18% of those corresponding indexes of pure starch for every 2% increase in gluten. The decreasing rate of the indexes mentioned above exceeded more than 2% except peak time, but there were no significant influence of gluten addition on breakdown, pasting temperature and pasting time. The inter layer composed of gluten was not observed when the addition of gluten was 10%, as the compound formed of gluten inlaid in the paste of starch, but obvious inter layer was detected when the addition of gluten was 18%. There was significant or remarkable difference among the effects of three different kinds of gluten on the peak viscosity, trough viscosity, area of viscosity, setback, and peak time, but it had no significant difference among the effects of different glutens on pasting temperature and pasting time. The descending order of the effect of different glutens on peak viscosity, trough viscosity, and area of viscosity was strong-, medium-, and weak-gluten, but the order of them for setback was opposite. Both addition and types of gluten significantly affected peak viscosity, trough viscosity, area of viscosity, setback, and peak time, but there were no significant effects of it on peak time and peak temperature.

关键词： wheat gluten starch pasting properties

Newly Discovered Herbig-Haro Objects near Haro 4-255

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Chinese Physics Letters 2000年第4期17卷 304-306页

作者： WANG Min ZHAO Bing YANG Ji DENG Li-Cai chen jian-sheng Purple Mountain Observatory National Astronomical Observatories Chinese Academy of SciencesNanjing 210008 Beijing Astronomical Observatory National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100012 Beijing Astrophysics Center Beijing 100871

We have performed CCD(charge coupled device)imaging toward the region near Haro 4-255 with a narrow band[SⅡ]filter and an intermediate band[BATC10]filter(BATC:the“Beijing-Arizona-Taiwan-Connecticut”multi-color sky survey project)and have discovered two Herbig-Haro(HH)objects,HH469 and *** are identified to be driven by the Haro 4-255(far-infrared)source and the T Tauri star Haro 4-255,respectively.

关键词： Connect filter narrow

Effects of Papain Hydrolysis on the Pasting Properties of Wheat Flour

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Journal of Integrative Agriculture 2012年第12期11卷 1948-1957页

作者： chen jian-sheng TIAN Ji-chun DENG Zhi-ying ZHANG Ying-xiang FENG Shou-li YAN Zuo-chen ZHANG Xin-ye YUAN Hui-qing State Key Laboratory of Crop Biology Ministry of Science and Technology/Group of Wheat Quality Breeding College of Agriculture Shandong Agricultural University

As one of the most effective enzymatic modification methods of protein, papain hydrolysis is applied widely in food production, accompanying starch pasting frequently in order to improve industrial quality. Effects of the papain hydrolysis on flour pasting properties were investigated in five papain/flour concentrations and five time-treatments. The structure of starch and protein networks in slurry was investigated under microscope before and after pasting. Results showed that papain hydrolysis influenced the pasting properties of wheat flour significantly through affecting structural characteristics, amylase activity and exotbermic transition, especially during the early stage of hydrolysis. Peak viscosity, trough, final, integral area, and setback significantly decreased along with the increasing concentration of papain. Both hydrolysis time and concentration of papain had obviously effect on the breakdown. Pasting temperature and pasting time increased significantly with the enhancement of papain concentration. Hydrolysis time exerted minor effect on the pasting temperature and pasting time. The average peak time was slightly prolonged by lower concentration of papain, otherwise slightly shortened by higher concentration.

关键词： wheat pasting properties papain gluten hydrolysis

Conditional QTL Mapping of Sedimentation Volume on Seven Quality Traits in Common Wheat

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Journal of Integrative Agriculture 2013年第12期12卷 2125-2133页

作者： DENG Zhi-ying ZHAO Liang LIU Bin ZHANG Kun-pu chen jian-sheng QU Hou-lan SUN Cai-ling ZHANG Yong-xiang TIAN Ji-chun State Key Laboratory of Crop Biology Ministry of Science and Technology/Key Laboratory of Crop Biology of Shandong ProvinceDepartment of Agronomy/Group of Wheat Quality BreedingShandong Agricultural University Agricultural Technology Popularization Station State Key Laboratory of Plant Cell and Chromosome Engineering Ministry of Science and Technology/Institute of Genetics and Developmental BiologyChinese Academy of Sciences Central Agricultural Technology Station

To evaluate the possible genetic interrelationships between flour components and the sedimentation volume（SD）,a doubled haploid（DH） population comprising 168 lines were used to identify the conditional quantitative trait loci（QTLs） for SD in three *** additive QTLs and 15 pairs of epistatic QTLs were detected for SD through unconditional and conditional QTL *** major additive QTLs were detected for SD conditioned on the seven quality *** additive QTLs were found to be independent of these *** additive QTLs were suppressed by three of the seven traits because of non-detection in unconditional *** pairs of epistatic QTLs were completely affected by the seven traits because of detection in unconditional mapping but no-detection in conditional *** pairs of epistatic QTLs were detected in conditional *** results indicated that conditional mapping could contribute to a better understanding of the interdependence of different and closely correlated traits at the QTL molecular level,especially some minor QTLs were *** conditional mapping approach provides new insights that will make it possible to avoid the disadvantages of different traits by breeding through molecular design.

关键词： wheat(Triticum aestivum L.) sedimentation volume conditional QTL mapping

Conditional and unconditional QTLs mapping of gluten strength in common wheat (Triticum aestivum L.)

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Journal of Integrative Agriculture 2017年第10期16卷 2145-2155页

作者： LIU Tong-tong LIU Kai WANG Fang-fang ZHANG Ying LI Qing-fang ZHANG Kai-ran XIE Chu-peng TIAN Ji-chun chen jian-sheng State Key Laboratory of Crop Biology/Group of Wheat Quality Breeding Key Laboratory of Crop Water Physiology and Drought-tolerance Germplasm Improvement Ministry of Agriculture/College of Agronomy Shandong Agricultural University Tai'an 271018 P. R. China

Dissecting the genetic relationships among gluten-related traits is important for high quality wheat breeding. Quantita- tive trait loci （QTLs） analysis for gluten strength, as measured by sedimentation volume （SV） and gluten index （GI）, was performed using the QTLNetwork 2.0 software. Recombinant inbred lines （RILs） derived from the winter wheat varieties Shannong 01-35xGaocheng 9411 were used for the study. A total of seven additive QTLs for gluten strength were identi- fied using an unconditional analysis. QGi1D-13 and QSv1D-14 were detected through unconditional and conditional QTLs mapping, which explained 9.15-45.08% of the phenotypic variation. QTLs only identified under conditional QTL mapping were located in three marker intervals： WPT-3743-GLU-D1 （1D）, WPT-7001-WMC258 （1B）, and WPT-8682-WPT-5562 （1B）. Six pairs of epistatic QTLs distributed nine chromosomes were identified. Of these, two main effect QTLs （QGi1D-13 and QSvlD-14） and 12 pairs of epistatic QTLs were involved in interactions with the environment. The results indicated that chromosomes 1B and 1D are important for the improvement of gluten strength in common wheat. The combination of conditional and unconditional QTLs mapping could be useful for a better understanding of the interdependence of different traits at the QTL molecular level.

关键词： wheat (Triticum aestivum L.) gluten strength gluten index sedimentation volume unconditional QTL mapping conditional QTL mapping

Studies on the Mechanism of Single Basal Application of Controlled-Release Fertilizers for Increasing Yield of Rice (Oryza sativa L.)

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Agricultural Sciences in China 2007年第5期6卷 586-596页

作者： TANG Shuan-hu YANG Shao-hai chen jian-sheng XU Pei-zhi ZHANG Fa-bao AI Shao-ying HUANG Xu Soil and Fertilizer Research Institute Guangdong Academy of Agricultural Sciences Guangzhou 510640 P.R.China Fertilizer and Balanced Fertilization Laboratory College of Natural Resources and Environment Science South China Agricultural University Guangzhou 510642 P.R.China

This paper was to explore the mechanism of single basal application of controlled-release fertilizers for increasing yield of rice （Oryza sativa L.）. Pot trials and cylinder trials were carried out from 2002 to 2005 to study the influences of single basal application of 3 controlled-release fertilizers on the changes of soil available N, root development, senescence and lodging resistance at late growth stages. Results showed that at 30 days after fertilization, single basal application of controlled-release fertilizers coated with vegetal-substance （CRF1） and polymer materials （CRF3） increased soil available N to 12.0 and 147.9%, respectively, in comparison to split fertilization of rice-specific fertilizer （RSF1）. Treatments of the two CRFs obviously benefited the development of root system, resulting in greater rice root weights with extensive distribution and higher root activity. In addition, the two CRF treatments, in comparison to RSF1, enhanced chlorophyll consents of the flag leaves to 9.5 and 15.5%, and soluble protein up to 89.7 and 108.0% respectively. Application of the two CRFs also made the base of rice stems strong and large, declined the proportion of shoot and root, increased root depth index. Though relatively low K rate, single basal application of the CRF3 coated with NH4MgPO4 could also promote the development of root system, enhance root activity and some physiological functions of flag leaves. Based on these results, it was concluded that major mechanisms for increasing rice yield by single basal application of the CRFs should be attributed to grater soil available N supply, superior development of root systems, better nutrient absorption capacity, slower senescence and enhancement of lodging resistance at late stages.

关键词： rice (Oryza sativa L.) single basal fertilization controlled-release fertilizer root system available nitrogen

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帷幕灌浆扩散半径及数值模拟的研究

岩土力学 2012年第7期33卷 2235-2240页

作者：韩磊陈建生陈亮河海大学岩土工程研究所南京210098 中交第二公路勘察设计研究院有限公司武汉430056

从连续性方程出发,考虑浆液压力对土体孔隙率的影响,分析推导了浆液在多孔介质中的渗流规律,并给出了扩散半径的简单近似计算公式;然后将二相流理论应用到注浆研究中,假设孔隙由水和浆液完全充填,且二者不相混溶,建立了浆液驱水的非稳... 详细信息

从连续性方程出发,考虑浆液压力对土体孔隙率的影响,分析推导了浆液在多孔介质中的渗流规律,并给出了扩散半径的简单近似计算公式;然后将二相流理论应用到注浆研究中,假设孔隙由水和浆液完全充填,且二者不相混溶,建立了浆液驱水的非稳定渗流模型。根据某大坝的实际情况,用FLAC软件中的二相流模块对大坝灌浆过程进行了模拟分析,并与推导公式相比较。由于二相流理论考虑了毛细压力的作用,模拟得到的浆液扩散速率递减得更快。模拟结果表明,浆液和水之间存在着一个过渡带,浆液的饱和度在不同时间和位置上是变化的。随着时间的延长,浆液扩散得越远,但其速率逐渐减小。扩散半径不仅与渗透系数有关,还与孔隙度有关,而且孔隙度较渗透系数对扩散半径有着更大的影响。二相流理论可以更好地模拟帷幕灌浆的浆液扩散情况。

关键词：帷幕灌浆扩散半径二相流数值模拟

Market Scale,Home Market Effect and Evolution of Spatial Economic Structure:China's Regional Coordinated Development on Different Spatial Scales

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Market Scale,Home Market Effect and Evolution of Spatial Eco...