|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Shift-share Analysis on International Tourism Competitiveness——A Case of Jiangsu Province显示文摘Shift-share analysis has been confirmed a useful approach in the study of regional economics and many kinds of extended shift-share models have been advanced and put into practice in economic studies, but few have hitherto been introduced and applied to the tourism research in China. Moreover understanding the spatially competitive relationship is of paramount importance for marketers, developers, and planners involved in tourism strategy development. Based on international tourism receipts from 1995 to 2004, this study aims at probing into the spatial competitiveness of interna- tional tourism in Jiangsu Province in comparison with its neighbors by applying a spatially extended shift-share model and a modified dynamic shift-share model. The empirical results illustrate that exceptional years may exist in the ap- plication of dynamic shift-share models. To solve this issue, modifications to dynamic shift-share model are put forward. The analytical results are not only presented but also explained by the comparison of background conditions of tourism development between Jiangsu and its key competitors. The conclusions can be drawn that the growth of international tourism receipts in Jiangsu mainly attributes to the national component and the competitive component and Zhejiang is the most important rival to Jiangsu during the period of 1995-2004. In order to upgrade the tourism competitiveness, it is indispensable for Jiangsu to take proper positioning, promoting and marketing strategies and to cooperate and integrate with its main rivals. | SHI Chunyun ZHANG Jie YANG Yang ZHOU Zhang | 2007 | Chinese Geographical Science2007，17，2： | 9 |
| 2 | Adhesion forces for water/oil droplet and bubble on coking coal surfaces with different roughness显示文摘Surface roughness plays a significant role in floatability of coal.In the present paper,coking coal surface was polished by three different sandpapers and the surface properties were characterized by contact angle and roughness measurements.The effect of surface roughness on floatability was investigated by adhesion force measurement system for measuring interaction forces between droplets/bubbles and coking coal surfaces with different roughness.The results showed that the contact angle decreased with increasing roughness yet the adhesion force between the water droplet and coal surface increased owing to the increased contact line and the appearance of line pinning.Maximum adhesion forces between water and surfaces were 111.70,125.48,and 136.42μN when the roughness was 0.23,0.98,and 2.79 μm,respectively.In contrast,under a liquid environment,the adhesion forces between air bubble/oil droplet and coal surfaces were decreased with increasing roughness because of the restriction by water.Maximum adhesion forces of increasing roughness were 97.14,42.76,and 17.86 μN measured at interfaces between air bubble and coal surfaces and 169.48,145.84,and 121.02 lN between oil droplet and surfaces,respectively.Decreasing roughness could be beneficial to the spreading of oil droplets and the adhesion of bubbles which is conducive to flotation separation. | Chunyun Zhu Guosheng Li Yaowen Xing Xiahui Gui | 2021 | International Journal of Mining Science and Technology2021，31，4： | 8 |
| 3 | Cloning and functional characterization of Rht8,a“Green Revolution”replacement gene in wheat显示文摘Dear Editor,Wheat(Triticum aestivum)is a major staple crop in the world and provides~20%of the food calories for human consumption(Appels et al.,2018).During the 1960s and 1970s,the introduction of two semi-dwarfing genes Rht-B1b and Rht-D1b in wheat varieties strikingly improved lodging resistance and harvest index,and therefore substantially increased grain yield,resulting in the well-known'Green Revolution'(Peng et al.,1999).However,plants carrying Rht-B1b and Rht-D1b suffer from several drawbacks. | Hongchun Xiong Chunyun Zhou Meiyu Fu Huijun Guo Yongdun Xie Linshu Zhao Jiayu Gu Shirong Zhao Yuping Ding Yuting Li Jiazi Zhang Ke Wang Xuejun Li Luxiang Liu | 2022 | Molecular Plant2022，15，3： | 7 |
| 4 | A space power system of free piston Stirling generator based on potassium heat pipe显示文摘The power system of a free piston Stirling generator(FPSG)based on potassium heat pipes has been developed in this paper.Thanks to the advantages of long life,high reliability,and high overall thermal efficiency,the FPSG is a promising candidate for nuclear energy,especially in space exploration.In this paper,the recent progress of FPSG based on nuclear reactor for space use was briefly reviewed.A novel FPSG weighted only 4.2 kg was designed,and one dimensional thermodynamic modeling of the FPSG using Sage software was performed to estimate its performance.The experiment results indicated that this FPSG could provide 142.4 W at a thermal-to-electric efficiency of nearly 17.4%.Besides,the power system integrated with four FPSGs and potassium heat pipes was performed and the single machine failure test was conducted.The results show that this system could provide an electrical power of 300 W at an overall thermal efficiency of 7.3%.Thus,it is concluded that this power system is feasible and will have a great prospect for future applications. | Mingqiang LIN Jian MOU Chunyun CHI Guotong HONG Panhe GE Gu HU | 2020 | Frontiers in Energy2020，14，1： | 5 |
| 5 | A Study on Triacylglycerol Composition and the Structure of High-Oleic Rapeseed Oil显示文摘 | Mei Guan Hong Chen Xinghua Xiong Xin Lu Xun Li Fenghong Huang Chunyun Guan | 2016 | Engineering2016，2，2： | 3 |
| 6 | A male-ABCD algorithm for hepatocellular carcinoma risk prediction in HBs Ag carriers显示文摘Objective: Hepatocellular carcinoma(HCC) development among hepatitis B surface antigen(HBs Ag) carriers shows gender disparity, influenced by underlying liver diseases that display variations in laboratory tests. We aimed to construct a risk-stratified HCC prediction model for HBs Ag-positive male adults.Methods: HBs Ag-positive males of 35-69 years old(N=6,153) were included from a multi-center populationbased liver cancer screening study. Randomly, three centers were set as training, the other three centers as validation. Within 2 years since initiation, we administrated at least two rounds of HCC screening using Bultrasonography and α-fetoprotein(AFP). We used logistic regression models to determine potential risk factors,built and examined the operating characteristics of a point-based algorithm for HCC risk prediction.Results: With 2 years of follow-up, 302 HCC cases were diagnosed. A male-ABCD algorithm was constructed including participant's age, blood levels of GGT(γ-glutamyl-transpeptidase), counts of platelets, white cells,concentration of DCP(des-γ-carboxy-prothrombin) and AFP, with scores ranging from 0 to 18.3. The area under receiver operating characteristic was 0.91(0.90-0.93), larger than existing models. At 1.5 points of risk score,26.10% of the participants in training cohort and 14.94% in validation cohort were recognized at low risk, with sensitivity of identifying HCC remained 100%. At 2.5 points, 46.51% of the participants in training cohort and 33.68% in validation cohort were recognized at low risk with 99.06% and 97.78% of sensitivity, respectively. At 4.5 points, only 20.86% of participants in training cohort and 23.73% in validation cohort were recognized at high risk,with positive prediction value of 22.85% and 12.35%, respectively.Conclusions: Male-ABCD algorithm identified individual's risk for HCC occurrence within short term for their HCC precision surveillance. | Yuting Wang Minjie Wang He Li Kun Chen Hongmei Zeng Xinyu Bi Zheng Zhu Yuchen Jiao Yong Wang Jian Zhu Hui Zhao Xiang Liu Chunyun Dai Chunsun Fan Can Zhao Deyin Guo Hong Zhao Jianguo Zhou Dongmei Wang Zhiyuan Wu Xinming Zhao Wei Cui Xuehong Zhang Jianqiang Cai Wanqing Chen Chunfeng Qu | 2021 | Chinese Journal of Cancer Research2021，33，3： | 3 |
| 7 | Responses of Seed Yield and Economic Benefit of Winter Oilseed Rape(Brassica napus L.) to Different NPK Ratio and Dose显示文摘Field experiments were conducted during 2008-2010 to investigate the effects of NPK fertilization on seed yield and economic benefit of a new hybrid cultivar of winter oilseed rape(Brassica napus L.)- Xiangzayou763,and to determine the optimum NPK ratio and dose in Hunan,China.The results showed that NPK ratio(1:0.50:0.50) with 180 kg/hm2 N,90 kg/hm^2 P_2O_5 and 90 kg/hm^2 K_2O was the optimum combination for the highest seed yield(2 231.13 kg/hm2) and economic benefit(9 816.97 Yuan/hm^2),of which 1 641.23 Yuan/hm^2 being set for fertilizer investment(VCR=4.11).Besides,the effects of N,P and K fertilizers on seed yield and oil production of winter oilseed rape were not identical.N had the greatest effect on plant growth of winter oilseed rape,followed by P and K.Total leaf number,green leaf number,leaf length and width,rhizome diameter,branch number,dry weight per plant and other agronomic characters in high N treatments were higher than those in low N treatments.By correlation and path analysis of yield components,the contribution rate to seed yield was found:effective silique number per plant>seed number per silique>1 000-seed weight. | Yingzi WANG Chang TIAN Xuan ZHOU Wenming WANG Jianwei PENG Zhenhua ZHANG Haixing SONG Chunyun GUAN | 2015 | Agricultural Science & Technology2015，16，11： | 2 |
| 8 | Role of constraints in Chinese calligraphic landscape experience: An extension of a leisure constraints model显示文摘 | Honglei Zhang Jie Zhang Shaowen Cheng Shaojing Lu Chunyun Shi | 2012 | Tourism Management2012，，6： | 2 |
| 9 | Depression and stress levels increase risk of liver cancer through epigenetic downregulation of hypocretin显示文摘Recent studies suggest that Hypocretin (HCRT, Orexin) are involved in stress regulation of depression through the hypothalamic-pituitary-adrenal (HPA) axis. However, the molecular mechanism by which Hypocretin regulate neurobiological responses is unknown. Herein, the effects of chronic stress on the epigenetic modification of HCRT and its association with depression were explored with regard to a potential role in cancer progression. In the study, Sprague Dawley (SD) rats were used to establish an animal model of cancer with depression by administrating n-nitrosodiethylamine (DEN) and chronic unpredictable mild stress (CUMS). RNA-sequencing was used to detect differentially expressed genes in the hippocampus of rats and quantitative real-time polymerase chain reaction (qRT-PCR) was used to validate the results of RNA-sequencing. The status of HCRT promoter methylation was assessed by methylation specific polymerase chain reaction. Behavioral tests showed that rats exposed to CUMS had significant depressive-like behaviors. The number of liver tumors and tumor load in depressed rats exposed to CUMS was higher than in SD rats without CUMS. RNA-sequencing revealed that HCRT was one of the most siginificantly downregulated gene in the hippocampus of SD rats with CUMS compared to non-stressed group, which was validated by qRT-PCR. HCRT mRNA expression was downregulated and the promoter for HCRT was hyper-methylated in those with depression. These results identified a critical role for chronic psychological stressors in tumorigenesis and cancer progression, via epigenetic HCRT downregulation. Such epigenetic downregulation may be the molecular basis for the association of cancer with depression. | Chunyun Pu Shaorong Tian Sanxiu He Weihong Chen Yuanyuan He Hongyan Ren Jing Zhu Jun Tang Xiaolan Huang Ying Xiang Yixiao Fu Tingxiu Xiang | 2022 | Genes & Diseases2022，9，4： | 2 |
| 10 | Optical design of rectangular illumination with freeform lenses for the application of LED road lighting显示文摘我们在场为到轻射出的二极管的申请的一个形式自由的透镜(带) 灯光的道路。我们建议简单 sourcetarget 基于 Snells 法律和几何光学的分析印射方法的发光紧张。我们计算了剖面图的不同轮廓与光滑的表面构造一个形式自由的透镜。计算机模拟结果证明一个单个形式自由的透镜的灯光的表演不为道路点亮是足够的。为道路灯模拟,我们在一块印刷电路板上采用了形式自由的透镜的卵形的安排。另外,我们执行了公差分析决定生产和安装误差的公差限制。在 12 m 的高度的一盏道路灯能与 40 m 的一个区域创造矩形的照明 24.6 勒克司的 12 m, 69.7% 一致性,和平均照度。这灯光的表演能充分遵循点亮设计标准的城市的道路。 | Chunyun XU Haobo CHENG Yunpeng FENG | 2017 | Frontiers of Optoelectronics2017，10，4： | 1 |
| 11 | Hygroscopicity measurement of sodium carbonate,β-alanine and internally mixed β-alanine/Na2CO3 particles by ATR-FTIR显示文摘Water-uptakes of pure sodium carbonate(Na2CO3),pureβ-alanine and internally mixedβ-alanine/Na2CO3 aerosol particles with different mole ratios are first monitored using attenuated total reflectance Fourier transform infrared spectroscopy(ATR-FTIR)technique.For pure Na2CO3 aerosol particles,combining the absorptions at 877 and 1422 cm-1 with abrupt water loss shows the efflorescence relative humidity(ERH)of 62.9%–51.9%.Upon humidifying,solid Na2CO3 firstly absorbs water to from Na2CO3·H2O crystal at 72.0%RH and then deliquesces at 84.5%RH(DRH).As for pureβ-alanine particles,the crystallization takes place in the range of 42.4%–33.2%RH and becomes droplets at^88.2%RH.Whenβ-alanine is mixed with Na2CO3 at various mole ratios,it shows no efflorescence of Na2CO3 whenβ-alanine to Na2CO3 mole ratio(OIR)is 2:1.For 1:1 and 1:2β-alanine/Na2CO3 aerosols,the ERHs of Na2CO3 are 51.8%–42.3%and 57.1%–42.3%,respectively.Whileβ-alanine crystal appears from 62.7%RH for 2:1 and 59.4%RH for both 1:1 and 1:2 particles and lasts to driest state.On hydration,the DRH is 44.7%–75.2%for Na2CO3 with the OIR of 1:1 and 44.7%–69.0%for 1:2 mixture,and those of β-alanine are 74.8% for 2:1 mixture and 68.9%for two others.After the first dehumidification–humidification,all the water contents decrease despite of constituent fraction.And at^92%RH,the remaining water contents are 92%,89%and 82%at^92%RH,corresponding to OIR of 2:1,1:1 and 1:2 mixed system,respectively. | Ping Yang Hui Yang Na Wang Chunyun Du Shufeng Pang Yunhong Zhang | 2020 | Journal of Environmental Sciences2020，32，1： | 1 |
| 12 | Studies of Improving the Frequency of Indica Rice Transformation by Biolistic Bombardment显示文摘In order to improve the frequency of indica rice transformation by biolistic bombardment, suitable culture conditions for embryonic calli,an optimal selection scheme for resistant calli and seedlings, and optimum bombardment parameters a investigated by using 14 commercially important indica rice cultivars. The main results show that the CC medium with 36g/L mannitol is a scheme subculture medium in which the browning of indica rice calli can be mitigated significantly; The concentration of 30~40mg/L Hyg or 150~200mg/L G418 or 10~20 mg/L Basta is suitable for selection of resistant calli; The transformation parameters of 100μg gold powder absorbing 0.2μg DNA per shot and 900 psi helium pressure and 6 cm bombardment distance and bombarded twice for each plate give the best result; Keeping the target calli on osmotic medium containing 60g/L mannitol from 12 ~24h before bombardment to 24~48h after it can increase the efficiencies of transformation . Furthermore, some transgenic indica rice plants are obtained using this optimized transformation system. | 易自力 Wang Li Cao Shouyun Yuan Longping Guan Chunyun Zhau Puhan Tian Wenzhang Chu Chengcai | 2003 | High Technology Letters2003，9，1： | 1 |
| 13 | Effect of Anterior Stomach Disease on Rumen Function of Beef Cattle显示文摘[Objective] To explore the effect of anterior stomach disease on the rumen function of beef cattle. [Method]The ruminal contraction function of beef cattle was recorded by multi-channel physiological recorder,the frequency of rumination and belching was observed to detect their effects on the motor function of rumen. Changes of ciliates in the rumen and the intensity of fermentation were determined to detect their influences on digestive function. [Results] The ruminal tension and systolic frequency significantly decreased and the rumination frequency decreased or even stopped under the condition of impactio ruminis,and the belching frequency also decreased. Ciliate numbers of atonia proventriculorum,rumen impaction and rumen expansion cattle were significantly lower than that of normal cattle( P < 0. 01),and the viability of ciliates also significantly decreased. [Conclusion] Occurrence of the stomach disease of beef cattle had significant adverse effects on ruminal function of cattle. | Wan Chunyun Gong Dachun Yang Fengli | 2017 | Animal Husbandry and Feed Science2017，9，5： | 1 |
| 14 | Synthesis and biodistribution of a new nitrido complex for cerebralimaging显示文摘 | Zhang Junbo Wang Xuebin Li Chunyun | 2002 | Nucl Med Biol2002，29，： | 1 |
| 15 | Degradation of pyrene insoils by extracellular polymeric substances(EPS)extracted from liquidcultures显示文摘 | JIA Chunyun LI Peijun LI Xiaojun | 2011 | Process Biochemistry2011，46，8： | 1 |
| 16 | Data block adap- tive filtering algorithms for a-stable random processes显示文摘 | Zhijin Zhao Kehai Dong Chunyun Xu | 2007 | Digital Signal Processing2007，17，4： | 1 |
| 17 | De- sign and analyses of axial semi-active dynamic vibra- tion absorbers based on magneto rheological elasto- mers显示文摘 | YANG Zhirong QIN Chunyun RAO Zhushi | 2014 | SAGE: Journal of Intelligent Material Sys- tems and Structures2014，31，： | 1 |
| 18 | Structural Characterization and Identification of tridoid Glycosides, Saponins, Phenolic Acids and Flavonoids in Flos Lonieerae Japonieae by a Fast Liquid Chromatography Method with Diode- array Detection and Time-of-flight Mass Spectrometry显示文摘 | Qi Lianwen Chen Chunyun Li Ping | 2009 | Rapid Commun Mass Spectrom2009，23，19： | 1 |
| 19 | Effect of roughness on wettability and floatability:Based on wetting film drainage between bubbles and solid surfaces显示文摘Wetting film thinning measurement was introduced to clarify the wettability and floatability of solid surfaces with varying roughness. The wettability was quantified using the contact angle measurement combined with the dynamic force microbalance test between solid surfaces and water droplets, while the floatability was investigated by the bubble-solid surface dynamic attachment observation and the induction time measurement. The results show that the water contact angles reduce(14.53°, 12.74°, and 6.71°)with the increase of glass surface roughness, while the water droplet-glass adhesion forces intensify(11.1, 19.1 and 19.2 μN) owing to the stable wetting film. The distortion of the contact surface and the Wenzel state are the causes. In contrast, the hydrophobized surfaces have the growing apparent contact angles(38.08°, 69.81°, and 81.01°), declining adhesion strength and shortening induction time(863, 352and 12 ms) along with the increasing surface roughness. The weak wettability and fine floatability on the rough hydrophobized surface is reflected in the fast wetting film drainage dynamics and three-phase contact formation, which may be attributed to the wetting film with short diameter on tiny rough nubs and the entrapped air in the grooves as a bridge between the bulk bubble and the solid surface. | Ming Li Yaowen Xing Chunyun Zhu Qinshan Liu Zili Yang Rui Zhang Youfei Zhang Yangchao Xia Xiahui Gui | 2022 | International Journal of Mining Science and Technology2022，32，6： | 1 |
| 20 | Development of taxonomic rRNA-targeted probes of two harmful algae: Prorocentrum minimum and Karenia mikimotoi by fluorescence in situ hybridization显示文摘Harmful algal blooms recently have been under the spotlight throughout the world, because of their negative impact on the marine environment, aquaculture, fisheries as well as public health. The development of methods for rapid and precise identification and quantification of causative species is essential for the warning and monitoring of blooms, among which the techniques based on taxonomic probes are the most favored. In this study, two harmful algae, i.e., Prorocentrum minimum and Karenia mikimotoi were taken into consideration. The partial large subunit rDNA (D1-D2) of both species were firstly PCR-amplified, cloned and sequenced. The obtained sequences were then introduced to carry out alignment analysis for gene specific regions. Three respective candidate probes for each species were designed and used to screen the optimal probe by performing fluorescence in situ hybridization (FISH) tests. The results showed that the probes Pmin0443 and Kmik0602 displayed the best hybridization for P. minimum and K. mikimotoi, respectively. Both the specific (taxonomic) (Pmin0443 and Kmik0602) and the control probes (UniC0512 and UniR0499) were used for cross-reactivity tests with other microalgae in our laboratory. The probes Pmin0443 and Kmik0602 are specific and could be served as taxonomic probes introduced into the techniques targeting rRNA, such as FISH, sandwich hybridization, and DNA-microarray assay of P. minimum and K. mikimotoi in the future. Finally, FISH analyses with both probes were performed on the simulated field samples. The probes could hybridize exclusively with the target cells well, and no significant difference (p >0.05) was observed in the cell densities of the samples determined by FISH and light microscopy (LM). All suggest that the probes are specific and could be introduced into FISH for the monitoring of both harmful algae. | CHEN Guofu WANG Quanfu ZHANG Chunyun ZHANG Baoyu WANG Guangce LU Douding XU Zhong YAN Peishen | 2013 | Acta Oceanologica Sinica2013，32，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员