901
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Xu G, Desai BR. Purely gluonic soliton solutions in the leading-logarithm model. Int J Clin Exp Med 1989; 40:620-631. [PMID: 10011853 DOI: 10.1103/physrevd.40.620] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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902
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Xu G. [A primary study on the history of ancient West-Asia and Egypt's pharmacy] (Chi). ZHONGHUA YI SHI ZA ZHI (BEIJING, CHINA : 1980) 1989; 19:111-5. [PMID: 11622621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
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903
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Xu G, Dai JH, Zhang HJ. Transition to chaos from quasiperiodicity in optical bistability with competing interactions. PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 39:3508-3510. [PMID: 9901653 DOI: 10.1103/physreva.39.3508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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904
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Shi H, Xu G, Shen Z. A retrospective study of oral mucosal diseases in three age groups. GERODONTICS 1988; 4:235-7. [PMID: 3271719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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905
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Tang P, Xu G, Chen XH, Wang YP, Zhang WG, Yuan SL. [Studies of the effect of nickel and nickel compounds on transformation on Syrian hamster embryo cells]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1988; 19:150-3. [PMID: 3198095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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906
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Xu G, Tang P, Wang YP, Chen XH, Zhang WG, Li GG. [Carcinogenic effects on Syrian hamster embryo cells exposed to He-Ne laser in vitro]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1987; 18:238-40. [PMID: 3679175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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907
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Tong ZH, Zhu G, Yan LX, Zhu J, Feng YG, Xu G. Association of HLA with Graves' disease in Chinese. Chin Med J (Engl) 1987; 100:296-8. [PMID: 3115694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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908
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Xu G, Tsuji S, Asada M. A Motion Stereo Method Based on Coarse-to-Fine Control Strategy. IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE 1987; 9:332-336. [PMID: 21869404 DOI: 10.1109/tpami.1987.4767908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This correspondence presents a motion stereo method based on coarse-to-fine control strategy. A camera sliding straight takes images that form a set of stereo pairs. The matching proceeds from the shortest baseline pair to the longest baseline pair, using the disparity map already obtained to guide in searching for the next pair.
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909
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Thompson DC, Weinberger E, Xu G, Stoicheff BP. Frequency shifts and line broadenings in collisions between Rydberg and ground-state alkali-metal atoms. PHYSICAL REVIEW. A, GENERAL PHYSICS 1987; 35:690-700. [PMID: 9898192 DOI: 10.1103/physreva.35.690] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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910
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Bai SH, Xu G, Tang P, Chen XH. [A study of antineoplastic activity of DHAQ on human adenocarcinoma cells of lung hepatoma and gastric cancer cells in vitro]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1986; 17:284-6. [PMID: 3032765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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911
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Tang P, Xu G, Chen XH. [Study on the routine method of a short-term transforming test in mammalian cells in vitro for detecting carcinogens and promotors]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1986; 17:185-9. [PMID: 3104196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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912
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Opdyke ND, Huang K, Xu G, Zhang WY, Kent DV. Paleomagnetic results from the TRiassic of the Yangtze Platform. ACTA ACUST UNITED AC 1986. [DOI: 10.1029/jb091ib09p09553] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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913
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Xu G, Hu WY, Puga MW, Tong SY, Yeh JL, Wang SR, Lee BW. Atomic geometry of the 2 x 2 GaP(111) surface. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 32:8473-8476. [PMID: 9937055 DOI: 10.1103/physrevb.32.8473] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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914
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Xu G, Bai SH, Chen XH, Tang P, Li GG. [The injury effect of hematoporphyrin disodium salt of the pig and He-Ne laser to human cells in vitro]. SICHUAN YI XUE YUAN XUE BAO = ACTA ACADEMIAE MEDICINAE SICHUAN 1985; 16:310-13. [PMID: 3837389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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915
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Goldschmidt YY, Xu G. Phase diagrams of the random-field Potts model in three dimensions. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 32:1876-1879. [PMID: 9937247 DOI: 10.1103/physrevb.32.1876] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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916
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Xu G, Bai SH, Tang P, Chen XH, Li GG. [Successful induction of transformation of NIH/3T3 cells in vitro by low energy level He-Ne laser]. SICHUAN YI XUE YUAN XUE BAO = ACTA ACADEMIAE MEDICINAE SICHUAN 1985; 16:19-23. [PMID: 4012585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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917
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Bostock E, Dingledine R, Xu G, Chang KJ. Mu opioid receptors participate in the excitatory effect of opiates in the hippocampal slice. J Pharmacol Exp Ther 1984; 231:512-7. [PMID: 6094789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The effects of the opioid peptides morphiceptin and [N-MePhe3-D-Pro4]morphiceptin (PL017), both mu receptor agonists, were examined by electrophysiological techniques in the rat hippocampal slice and ligand binding techniques in hippocampal membrane preparations. The electrophysiological actions of the mu agonists were similar to those of the previously studied delta receptor agonist [D-Ala2, D-Leu5]enkephalin. Thus, for a given size field excitatory postsynaptic potential the amplitude of both population spike and intracellular excitatory postsynaptic potential was increased by morphiceptin. These effects were concentration dependent and reversed by naloxone. The EC50 for morphiceptin was 1.6 microM, which is consistent with the mu-selective binding properties of this peptide. Similar results were obtained with the more potent analog PL017. Morphiceptin and morphine had similar displacement profiles in competition experiments performed with hippocampal membranes and a variety of radioligands. In Tris buffer morphiceptin potently inhibited the binding of the mu receptor marker [125I]FK 33,824 but displayed the expected shallow displacement isotherm against binding of the delta receptor marker [125I][D-Ala2, D-Leu5]enkephalin. A significant interaction of either morphiceptin or morphine with kappa binding sites is improbable since neither agonist could fully displace binding of [3H]ethylketocyclazocine or [3H]diprenorphine. The potency of morphiceptin in displacing [3H]naloxone from mu binding sites was reduced by inclusion of 100 mM NaCl or 100 microM GTP in the assay. The dissociation constant of morphiceptin for mu binding sites in physiological saline was 0.78 microM, comparable to its EC50 determined in electrophysiological experiments. It appears, therefore, that the electrophysiological properties of opioid peptides in the hippocampal slice may be mediated by both mu and delta receptors.(ABSTRACT TRUNCATED AT 250 WORDS)
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918
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Xu G, Zhang Z. Filling of the lateral canal. Report of two cases. ORAL SURGERY, ORAL MEDICINE, AND ORAL PATHOLOGY 1984; 58:221-4. [PMID: 6592515 DOI: 10.1016/0030-4220(84)90140-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In this article two cases, each involving an inflamed lateral canal, are reported. The lateral canals were fully filled with Oxpara paste by slight overfilling. The management principles of lateral and accessory canals are briefly mentioned as well.
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919
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Xu G, Weber G. Dynamics and time-averaged chemical potential of proteins: importance in oligomer association. Proc Natl Acad Sci U S A 1982; 79:5268-71. [PMID: 6752943 PMCID: PMC346877 DOI: 10.1073/pnas.79.17.5268] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The chemical potential of a protein is a time-averaged quantity whose value depends upon the fractions of time spent in the different conformations and therefore upon the protein dynamics. If the monomer involved in an association equilibrium undergoes unfolding limited by its lifetime, its chemical potential as well as that of the associated form will not be constant and the free energy of association will be a diminishing function of the degree of dissociation. For a unique free energy of association, the logarithm of the protein concentration must change by 2.86 units to increase the degree of dissociation from 0.1 to 0.9. The dissociation of enolase appears to take place over a significantly smaller range (1.7 units), and dansyl conjugates of enolase show an even narrower range (0.9 unit). A simple descriptive theory is developed, and this shows that the values observed are explained by a difference in free energy of 1-3 kcal/mol (1 cal = 4.18 J) between the conformations present at negligible and almost complete dissociation.
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920
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Xu G, Zou C. NAD+ analogs in formation of new fluorophores on ultraviolet irradiation with D-glyceraldehyde-3-phosphate dehydrogenase. SCIENTIA SINICA. SERIES B, CHEMICAL, BIOLOGICAL, AGRICULTURAL, MEDICAL & EARTH SCIENCES 1982; 25:152-9. [PMID: 7100895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A number of NAD+ analogs have been tested in their ability to form fluorescent derivatives when UV irradiated with the active site Cys-149 carboxymethylated GAPDH and this has been compared with their properties of acting as hydrogen acceptors and forming the Racker band. Among the analogs tested, NHD+, NGD+, APAD+ and epsilon NAD+ give positive results in all the above-mentioned reactions whereas alpha NAD+, NMN+ and CPAD+ are all negative. FPAD+ forms a fluorescent derivative on UV irradiation with the carboxymethylated enzyme but is inactive as a hydrogen acceptor and does not form the Racker band. This is probably due to thiohemiacetal formation of the pyridine 3-aldehyde of this derivative with the active site SH group required for both the latter 2 reactions. TPAD+, although active active as a hydrogen acceptor, does not form either a fluorescent derivative or a Racker band. The fact that for the great majority of the analogs, the property of forming fluorescent derivatives is in parallel with their hydrogen acceptor activity seems to show that the formation of the fluorescent derivative is indeed at the active site, and hence can be used as an intrinsic probe for the study of the conformation of the active site of this enzyme.
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921
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Xu G. [Clinical observation of ultrasonic (sector scanning) diagnosis of anencephalus (author's transl)]. ZHONGHUA FU CHAN KE ZA ZHI 1981; 16:211-3. [PMID: 7343205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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922
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Yang HG, Xu ZY, Li CX, Zhang AD, Xu G, Li YY. The abnormal scattering of light in an α-lithium iodate single crystal under the action of a DC field. Acta Crystallogr A 1981. [DOI: 10.1107/s010876738109510x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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