Guanhua Xu
Guanhua Xu, Chinese geoscientist (Beijing 16 December 1941 – Internationally recognized as a leader on remote sensing and geographical informatics Developed techniques for digital image processing with multi-wave band and classification Developed methodology of remote sensing integrated surveys and their mapping Formulated the first technological regulation for a remote sensing integrated survey and mapping system for regenerative success Headed the group that developed an integrated system for natural disaster monitoring, damage evaluation and crop assessments by using satellite and airborne remote sensing (1990s) HONOURS Doctor Honoris Causa, University of Maryland
Guangxian Xu
Guangxian Xu, Chinese chemist (Shaoxing, Zhejiang 07 November 1920 – 28 April 2015) Developed methods to separate and extract rare earths Developed mathematical models for rare earth element separation processes Developed series or cascade extraction process for rare earths Proposed a formula that related the order of filling of atomic orbital levels with the grouping of elements in periods in the periodic table Established the quantum chemistry calculation method for rare earth elements Established a new theory of counter current extraction (1970s) Found that the rare earth separation process with counter current extraction obeys a role of constant mixed extraction ratios in the extraction and the scrubbing sections respectively Built up a theoretical model to simulate the dynamic process of the cascade from starting to the steady state Proposed and approved that the clear and transparent organic phase in solvent extraction is really a microemulsion (1980) Proposed a new classification of extraction systems and achieved several general rules about extraction processes Developed one-step enlargement expert system for large-scale production of high purity rare-earth metals Synthesized a serial of dual-oxygen complexes of quad-core rare earths HONOURS 345871 Xuguangxian (Asteroid)
Efrain Hernandez Xolocotzi
Efraín Ildefonso Hernandez Xolocotzi y Guzmán, Mexican ethnobotanist and botanical explorer (San Bernabé Amaxac de Guerrero, Tlaxcala State 23 January 1913 – Chapingo 21 February 1992) Authored over 200 papers and 6 books World authority on economic botany and ethnobotany mainly about collection of genetic resources for culture Authored with G. Alanis Estudio morfologico de cinco nuevas razas de maiz de la Sierra Madre Ocidental de Mexico. Agrociencias 5:3-30, 1970 HONOURS Genus Xolocotzia Miranda 1965 (Verbenaceae) Distinguished Economic Botanist, American Society for Economic Botany (1984) Frank N. Meyer Medal, Crop Science Society (1981)
Dingchang Xian
Dingchang Xian, Chinese nuclear physicist (Guangzhou, Guandong Province 15 August 1935 – With Junyan Chen et al. first to use synchrotron radiation for a non-destructive study of fossil internal structure (2006) With X.D. Su, Y. Liang, L. Li et al. presented a large scale, high efficiency and low-cost platform for structural genomics studies (2006) With C. Shi, Y. Jing, H.L. Lu & D.S. Li designed an in-vacuum multipole wiggler (2001) With L.Y. Zhang presented a special case of non-detrapping variable parameter wiggler of free electron lasers (1991) With X.H. He developed a cumulant variation method in lattice gauge field theory (1985) Proposed EXAFS (extended x-ray absorption fine structure) experiment with squared radian x ray photo acoustics independently Developed a method to calculate the relativistic invariant phase space in particle theory Proposed an analytical continuation method for the calculation of wave function in 4D space-time SOFTWARES With C.X. Wang. RADID, a software to calculate radiation distributions from insertion devices of one-dimensional linearly polarized magnetic fields (1990) With Y. Lange & D. Li. BENT, a software for ray tracing of X rays on bent oblique cut crystals (1990)
Zunong Wang
Zunong Wang, Chinese microbiologist and molecular biologist (Nanjing, Jiangsu September 1916 – SOME BIBLIOGRAPHY With Y.J. Qin & D. Gao. Screening of catabolite repression: resistant mutants of cellulase producing Penicillium spp. Acta Mycologica Sinica 3(4):238-43, 1984 With P.J. Gao & Y.Qu. Glucosidases from Trichoderma viride A 10 – Separation, purification and some of its properties. Chin. J. Biochem. Biol. Mol. 8(6): 735-40, 1992 With M.S.Jin & W.M. Yan. Build-up of conjugative transfer system for Thiobacillus thiooxidans. Chin. J. Biotechnol. 8:1-3, 1992 With W.F.Liu & D. Gao. Expression of the extracellular domain of the human immunodeficiency virus type 1 envelope protein and its fusion with β-galactosidase in Saccharomyces cerevisiae. Clin.Diagn. Lab. Immunol. 5(4):592-4, 1998 With Y.J. Qin & D. Gao. Α-acetolactate decarboxylase from B. licheniformis AS10106:Cloning and expression gene in E.coli & S.cerevisiae. JGG 27(2):165-9, 2000 HONORS Zunongwangia Qin, Zhao, Wang, Chen, Dang, Li, Zhang & Gao 2007 (Marine Bacteria)
Zhexian Wan
Zhexian Wan, Chinese mathematician (Shandong 07 November 1927 – Authored over 130 articles and 18 books With L.P. Huang proved the fundamental theorem of 2×2 Hermitian matrices over any division ring of generalized quaternions of characteristic not two (2001) Proved the fundamental theorems of the geometry of symmetric matrices over any field of characteristic two and not two (1994-6) With Z. Dai, X. Feng & M. Liu obtained algorithms for synthesizing the nonlinear feedforward sequence of an m-sequence (1993) Constructed an authentication code without arbitration from the subspace of the classical geometry (1992) With Z.D. Dai established a relationship between the Berlekamp-Massey and the Euclidean algorithms for linear feedback shift register synthesis (1988) With Y.X. Wang proved the fundamental theorem of the geometry of rectangular matrices over F2 (1962) A graphical method for solving the transportation problem and its applications