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| 1 | OPTICAL PROPERTIES OF GeO_2 AND Ge NANOCRYSTALS显示文摘he co m pound m aterial of n m size particles Ge O2 Si O2 w as synthesied through hydrolysis of Si( O C2 H4) and Ge Cl4 . A heat treatm ent w as carried out for the sa m ples at 100 ~1200 ℃in air . Its optical property w as deter mined by U V Vis spectur m . We have found that theabsorption edge of spectru m shifted progressively to longer w avelengths . The quantu m size ef fect of nanocrystals appears because crystals gro w and energy of optical band gap reduces d ueto the influence of te m perature . By the analysis of X ray diffraction w e have observed theprocess in w hich the structure of particles changed fro m disorder into order . | Y.H.Zhou 1) ,Y.Y.Feng 2) and H.Y.Lu 2) 1)Department of Physics Nanjing Normal University, Nanjing 210097,China 2)Physics and Ch寁O P T I C A L P R O P E R T I E S O F Ge O2 A N D Ge N A N O C R Y S T A L S Y. H. Zhou1) , Y. Y. Feng2) | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，5： | 22 |
| 2 | Cell Death Mechanisms Induced by Cytotoxic Lymphocytes显示文摘One of the functions of the immune system is to recognize and destroy abnormal or infected cells to maintain homeostasis. This is accomplished by cytotoxic lymphocytes. Cytotoxicity is a highly organized multifactor process. Here,we reviewed the apoptosis pathways induced by the two main cytotoxic lymphocyte subsets,natural killer(NK) cells and CD8+ T cells. In base to recent experimental evidence,we reviewed NK receptors involved in recognition of target-cell,as well as lytic molecules such as perforin,granzymes-A and-B,and granulysin. In addition,we reviewed the Fas-FasL intercellular linkage mediated pathway,and briefly the cross-linking of tumor necrosis factor(TNF) and TNF receptor pathway. We discussed three models of possible molecular interaction between lytic molecules from effector cytotoxic cells and target-cell membrane to induction of apoptosis. | Chávez-Galán L Arenas-Del Angel MC Zenteno E Chávez R Lascurain R | 2009 | Cellular & Molecular Immunology2009，6，1： | 17 |
| 3 | A novel drought-inducible gene,A TAF1,encodes a NAC family protein that negatively regulates the expression of stress-responsive genes in Arabidopsis显示文摘 | LU P L CH EN N Z AN R SU Z QI B S REN F CHEN J WANG X C | 2007 | Plant Molecular Biology2007，63，2： | 1 |
| 4 | Determination of residues endosulfan and five pyrethroid insecticides in virgin olive oil using gas chromatography with electron-capture detection显示文摘 | Ch L R Avramides E J Visi E | 2001 | J Chromatography A2001，921，： | 1 |
| 5 | Identification of α-gliadin genes in Dasypyrum in relation to evolution and breeding显示文摘 | LI G R LIU CH ZENG Z X JIA J Q ZHANG T ZHOU J P REN ZH L YANG Z J | 2009 | Euphytica2009，165，： | 1 |
| 6 | ^183W NMR of heteropoly and isopolytungstates explanations of chemical shifts and band assignments theoretical considerations 显示文摘 | ACERETE R HAMMER Ch F BAKER L C W | 1982 | J Chem Soc Dalton Trans1982，104，20： | 1 |
| 7 | Globule size of emulsions and toxicity to aphids 显示文摘 | Criffin E L Richardson CH Burdette R C | 1927 | J Agric Res1927，34，： | 1 |
| 8 | Signal transduction via platelet-derived growth factor receptors 显示文摘 | Heldin CH Ostman A R?nnstrand L | 1998 | Biochim Biophys Acta1998，1378，1： | 1 |
| 9 | A fluorescent nanosensor for apoptotic cells显示文摘 | Quinti L Weissleder R Tunq CH | 2006 | Nano Lett2006，6，3： | 1 |
| 10 | Lead in soils and plants: Its relation to trafiqc volume and proximity to highway显示文摘 | MOTTO H L DA INES R H CH IKOS L | 1970 | Environmental Science and Technology1970，4，3： | 1 |
| 11 | Measurement of induced pyroelectric coefficient using dynamic method: theory and experiments显示文摘 | Wu Ch G Zhang W L Li Y R | 2006 | Jpn J Appl Phys2006，45，4： | 1 |
| 12 | An improved genetic model generates high resolution mapping of QTL for protein quality in maize endosperm显示文摘 | Wu R L Lou X Y Ma CH X | 2002 | Proceedings of the National Academy of Sciences of the United States of America2002，99，11： | 1 |
| 13 | An improved genetic model generates high resolution mapping of QTL for protein quality in maize endosperm显示文摘 | WU R L LOU X Y MA CH X | 2002 | PNAS2002，99，11： | 1 |
| 14 | Connectivity of the Mutual -nearest-neighbor Graph in Clustering and Outlier Detection显示文摘 | Brito M R Ch'avez E L Quiroz A J | 1997 | Statistics Probability Letters1997，35，1： | 1 |
| 15 | Hydrogen storage in carbon nanotubes modified by microwave plasma etching and Pd decoration显示文摘 | Mu Sh Ch Tang H L Qian Sh H Pan M Yuan R Zh | | 0，，： | 1 |
| 16 | Long term neurological implications of somnolence syndrome in children with acute lymphocytic leukemia 显示文摘 | CH'IEN L T AUR R J A STAGNER S | 1980 | Ann Neurol1980，1980，： | 1 |
| 17 | Geomagnetically induced currents in the high-voltage power grid in China显示文摘 | LIU CH M LIU L PIRJOLA R | | 0，，04： | 1 |
| 18 | Soil erosion simulations of land use scenarios for a small Loess Plateau catchment 显示文摘 | Hessel R Messing I Ch L D | 2003 | Catena2003，54，12： | 1 |
| 19 | Circulating Hepatitis B Virus Nucleic Acidsin Chronic Infection: Represantation of Differently Polyadenylated Viral Transcripts during Progression to Nonreplicative Stages 显示文摘 | Su Q Wang SF Chang TE Breitkeutz R Hennig H Takegoshi K Edler L Schroeder CH | 2001 | Clin Cancer Res2001，7，： | 1 |
| 20 | Evolution of reconstructive techniques fol-lowing endoscopic expanded endonasal approaches显示文摘 | KASSAM A B CARRAU R L SNYDERMAN CH | 2005 | Neurosurg Focus2005，19，： | 1 |
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