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| 1 | Petrogenesis of the Early Cretaceous Tiantangshan A-type Granite in northwestern Guangdong province, SE China and tectonic implications显示文摘1 Introduction During the late Mesozoic times,the SE China is characterized by extensive magmatism and mineralization.The widely distributed granitoids with different(I-,S-and A-)types have been inferred to be closely related to the large-scale polymetallic mineralization.The Nanling tungsten-tin polymetallic belt is endowed with | JIA Ruya WANG Guochang GENG Lin ZHANG Zhihui JIA Hongxiang | 2017 | Acta Geologica Sinica(English Edition)2017，91，S1： | 2 |
| 2 | Functional k-means inverse regression显示文摘 | Guochang Wang Nan Lin Baoxue Zhang | 2014 | Computational Statistics & Data Analysis2014，70，2： | 1 |
| 3 | Floating-Point FPGA Gaussian Elimination in Reconfigurable Computing System显示文摘 | ZHANG Bowei GU Guochang SUN Lin WU Yanxia | 2011 | Chinese Journal of Electronics2011，20，1： | 1 |
| 4 | A novel inflatable rings supported design and buoyancy-weight balance deformation analysis of stratosphere airships显示文摘Owing to the unique advantages in flight altitude,dwelling time and wide coverage area,stratospheric airships provide permanent monitoring and surveillance for both civil and military applications.Here we propose a semi-rigid stratosphere airship design with circumferential high-pressure inflatable rings and a longitudinal carbon fiber skeleton supported inside.We perform numerical simulations to analyze the deformation characteristics during the whole ascending and descending process.An equivalent internal gradient pressure model of helium is established based on the capsule shape and buoyancy-weight equilibrium conditions.The implicit dynamic method is used to deal with the large deformation of the airship capsule under a low negative pressure condition.Deformation and load-bearing performance of the airship capsule,inflatable ring,skeleton,and suspension line are obtained under different working conditions.The results show that the airship,supported with the inflatable rings and the suspension lines,effectively maintains the shape and ensures the stiffness during the ascending,dwelling,and descending stages,especially suffering from negative pressure. | Weinan GAO Ji ZHANG Teng MA Guochang LIN Yuanpeng LIU Changguo WANG Huifeng TAN | 2022 | Chinese Journal of Aeronautics2022，35，1： | 1 |
| 5 | FLUORESCENCE STUDIES ON MORPHOLOGICAL CHANGE OF ST/DVB CROSSLINKED GELS DURING CHLOROMETHYLATION显示文摘The morphological change of St/DVB crosslinked gels during chloromethylation wasstudied by fluorescence spectroscopy using St/DVB crosslinked and hypercrosslinked gels as controlsamples. It has been found that with increase of chlorine content, the excimer emission band (~325nm)approaches to vanish, while the intensity of multi-ring aggregate emission band (~420nm) quicklyreaches a maximum, and then decreases sharply accompanied by appearance ofa new broad bandcentred at ca 488nm which roughly coincides with the typical emission band of hypercrossllinkedSt/DVB gels. Mearwhile, the result of IR measurement suggests that methylene bridge between phenylrings forms and increases with chloromethylation process. These results are explained in terms ofaside reaction of post-crosslinking, which densifies the loosely crosslinked networks and undoes thedensely entangled microgel nuclei. As a result, the morphology of the crosslinked gels becom es morehomogeneous with chloromethylation. | ZHANG Jixiang LI Hexian** WANG Guochang WANG Lin WANG Ying HE Binglin State Key Laboratory of Functional Polymer Materials For Adsorption and Separation and Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China | 2002 | Chinese Journal of Reactive Polymers2002，11，2： | 0 |
| 6 | Supporting Seeder and Planting Technology for Spring Corn in Arid Areas显示文摘The annual rainfall is low and the fresh water resources are scarce for the rainfed farming in dry zone of northern China,which seriously affects the sowing and growth of spring corn. In order to solve this problem,the technology of ridge-mulching and side-sowing of spring corn is put forward,the supporting compound operation seeder is developed,and the effect of different speed on the quality of sowing is tested and analyzed. Under the test conditions described in this paper,the seeding operation with a high speed( up to 6 km/h) can be realized,and the quality of the seeding operation can meet the requirements of the national standards. The application of this machine can solve the problem of ' drought damage at the booting stage' for spring corn,thereby realizing the deep fusion of farming machine and agronomy in dry farming of northern China,and achieving the integration of farming machine and agronomy. | Xiuping ZHANG Lin CHEN Guochang FAN Xudong YAN Xingmao YUAN Yazhen ZHANG Yu XIAO Zile HAN | 2018 | Asian Agricultural Research2018，10，4： | 0 |
| 7 | BI-GreenNet:Learning Green’s Functions by Boundary Integral Network显示文摘Green’s function plays a significant role in both theoretical analysis and numerical computing of partial differential equations(PDEs).However,in most cases,Green’s function is difficult to compute.The troubles arise in the following threefold.Firstly,compared with the original PDE,the dimension of Green’s function is doubled,making it impossible to be handled by traditional mesh-based methods.Secondly,Green’s function usually contains singularities which increase in the difficulty to get a good approximation.Lastly,the computational domain may be very complex or even unbounded.To override these problems,we develop a new framework for computing Green’s function leveraging the fundamental solution,boundary integral method and neural networkswith reasonably high accuracy in this paper.We focus on Green’s function of Poisson and Helmholtz equations in bounded domains,unbounded domains.We also consider Poisson equation and Helmholtz equations in domains with interfaces.Extensive numerical experiments illustrate the efficiency and accuracy of our method for solving Green’s function.In addition,Green’s function provides the operator from the source term and boundary condition to thePDEsolution.We applyGreen’s function to solve PDEs with different sources,and obtain reasonably high-precision solutions,which shows the good generalization ability of our method.However,the requirements for explicit fundamental solutions to remove the singularity of Green’s function hinder the application of our method in more complex PDEs,such as variable coefficient equations,which will be investigated in our future work. | Guochang Lin Fukai Chen Pipi Hu Xiang Chen Junqing Chen Jun Wang Zuoqiang Shi | 2023 | Communications in Mathematics and Statistics2023，11，1： | 0 |
| 8 | Causal relationship between 14 site-specific cancers and venous thromboembolism显示文摘Background:It has been observed that cancer and venous thromboembolism(VTE)are associated,but anticancer therapy may violate the causality.Therefore,this study aimed to elucidate the causal relationship of various cancers to VTE using Mendelian randomization(MR).Methods:Three MR methods were used to estimate causal effects:Inverse variance weighted(IVW),MR-Egger and weighted median.Sensitivity analyses included Cochran's Q-test,MR-Egger intercept test and MRPRESSO.Gene ontology enrichment analysis was performed to elucidate the underlying mechanisms of VTE development in cancer patients.Results:The primary IVW approach showed that non-Hodgkin's lymphoma(NHL)might increase the risk of VTE(odds ratio[OR]:1.20,95%confidence interval[95%CI]:1.00–1.44,p=0.045),while melanoma possibly reduced the risk of VTE(OR:0.89,95%CI:0.82–0.97,p=0.006),although there was no significance after adjustment for multiple testing.No association was observed between VTE risk and other site-specific cancers.Gene ontology enrichment analysis revealed that vitamin D played an important role in the development of VTE in cancer patients.Conclusions:Our findings suggested that genetically predicted NHL was associated with higher VTE risk,whereas melanoma had lower VTE risk compared with other site-specific cancers.Moreover,this study suggested that anticancer therapy and increased extensive examination might play a more important role in VTE development than the nature of cancer. | Xiong Chen Xiaosi Hong Shulu Luo Jiahao Cai Guiwu Huang Runnan Shen Lin Lv Gaochen Bai Wen Fu Li Yan Guochang Liu Kai Huang Qinchang Chen | 2022 | Cancer Innovation2022，1，4： | 0 |
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