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Showing 25 to 36 of 912 entries
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Decrease in ICAM-1 expression on gastric cancer cells is correlated with lymph node metastasis.

Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association

Fujihara T, Yashiro M, Inoue T, Sawada T, Kato Y, Ohira M, Nishiguchi Y, Ishikawa T, Sowa M, Chung KH.
PMID: 11957102
Gastric Cancer. 1999 Dec;2(4):221-225. doi: 10.1007/s101200050067.

BACKGROUND: Lymph node metastasis is a frequent type of metastasis in patients with gastric cancer. The mechanisms responsible for this type of metastasis, however, are not clearly understood. We hypothesize that the immunosurveillance system between cancer cells and lymphocytes...

Synthesis of Bis(aliphatic amine)osmium(II), Bis(arylamido)osmium(IV), and Bis(imido)- and Oxo(imido)osmium(VI) Porphyrins.

Inorganic chemistry

Li ZY, Huang JS, Chan MC, Cheung KK, Che CM.
PMID: 11669958
Inorg Chem. 1997 Jul 02;36(14):3064-3071. doi: 10.1021/ic961228j.

The syntheses, characterization, and reactivity of a series of osmium porphyrins, Os(II)(Por)(H(2)NR)(2) [Por = dianions of octaethylporphyrinato (OEP), tetraphenylporphyrinato (TPP), meso-tetrakis(p-tolyl)porphyrinato (TTP), meso-tetrakis(4-chlorophenyl)porphyrinato (4-Cl-TPP), meso-tetrakis(3,4,5-trimethoxyphenyl)porphyrinato (3,4,5-MeO-TPP), R = (t)Bu; Por = TPP, R = (i)Pr], Os(II)(Por)(HNEt(2))(2) (Por = TPP,...

Observation of "Ghost" islands and surfactant effect of surface gallium atoms during GaN growth by molecular beam epitaxy.

Physical review letters

Zheng LX, Xie MH, Seutter SM, Cheung SH, Tong SY.
PMID: 10978008
Phys Rev Lett. 2000 Sep 11;85(11):2352-5. doi: 10.1103/PhysRevLett.85.2352.

We observe "ghost" islands formed on terraces during homoepitaxial nucleation of GaN. We attribute the ghost islands to intermediate nucleation states, which can be driven into "normal" islands by scanning tunneling microscopy. The formation of ghost islands is related...

Synthesis and Crystal Structure of a Cationic Oxo-Bridged Nitridoruthenium(VI) Complex with a Chelating Diamine Ligand Having No alpha-CH Group.

Inorganic chemistry

Chiu WH, Guo CX, Cheung KK, Che CM.
PMID: 11666243
Inorg Chem. 1996 Jan 17;35(2):540-541. doi: 10.1021/ic950498j.

No abstract available.

Luminescent mononuclear and binuclear cyclometalated palladium(II) complexes of 6-phenyl-2,2 bipyridines: spectroscopic and structural comparisons with platinum(II) analogues.

Inorganic chemistry

Lai SW, Cheung TC, Chan MC, Cheung KK, Peng SM, Che CM.
PMID: 11272533
Inorg Chem. 2000 Jan 24;39(2):255-62. doi: 10.1021/ic991089g.

The mononuclear cyclometalated Pd(II) complexes [Pd(L1)X] (HL1 = 6-phenyl-2,2'-bipyridine; X = Cl, la; Br, 1b; I, 1c), [Pd(L1)PPh3]+ (1d), [Pd(L2-5)Cl] [2a-5a, HL2-5 = 4-(aryl)-6-phenyl-2,2'-bipyridine; aryl = phenyl (2), 4-chlorophenyl (3), 4-tolyl (4), 4-methoxyphenyl (5)] and the binuclear derivatives [Pd2(L1-5)2(mu-dppm)]2+...

Synthesis and fluorescence enhancement of oligophenylene-substituted calix[4]arene assemblies.

Chemical communications (Cambridge, England)

Wong MS, Zhang XL, Chen DZ, Cheung WH.
PMID: 12611004
Chem Commun (Camb). 2003 Jan 07;(1):138-9. doi: 10.1039/b210493h.

Tetra-oligophenylene substituted calix[4]arene assemblies containing up to three phenylene units have been synthesized by a convergent approach using Suzuki cross-coupling and their optical properties were investigated and compared with the corresponding monomer.

An independent, temperature-controllable microelectrode array.

Analytical chemistry

Yang H, Choi CA, Chung KH, Jun CH, Kim YT.
PMID: 14987116
Anal Chem. 2004 Mar 01;76(5):1537-43. doi: 10.1021/ac035270p.

Rapid, localized temperature control and negligible power consumption are key requisites for realizing effective parallel and sequential processing in the miniaturized, integrated biomedical microdevices where temperature-dependent biochemical reactions and fluid flow occur. In this study, an independent, temperature-controllable microelectrode...

Multiple cardiovascular considerations in a 76-year-old man.

The Consultant pharmacist : the journal of the American Society of Consultant Pharmacists

Cheang KI.
PMID: 16548650
Consult Pharm. 2005 Jun;20(6):519-24. doi: 10.4140/tcp.n.2005.519.

A 76-year-old man with a history of myocardial infarction, Type 2 diabetes, hypertension, hypercholesterolemia, and heart failure presents with muscle pain and spasm. A number of medication-related problems are identified by the pharmacist. Prioritization of medication-related problems and therapeutic...

Relative roles of general and complementation language in theory-of-mind development: evidence from Cantonese and English.

Child development

Cheung H, Hsuan-Chih C, Creed N, Ng L, Ping Wang S, Mo L.
PMID: 15260870
Child Dev. 2004 Jul-Aug;75(4):1155-70. doi: 10.1111/j.1467-8624.2004.00731.x.

Complex complements are clausal objects containing tensed verbs (e.g., that she cried) or infinitives (e.g., to cry), following main verbs of communication or mental activities (e.g., say, want). This research examined whether English- and Cantonese-speaking 4-year-olds' complement understanding uniquely...

Minimally destructive analysis of aluminum alloys by resonance-enhanced laser-induced plasma spectroscopy.

Analytical chemistry

Lui SL, Cheung NH.
PMID: 15828801
Anal Chem. 2005 Apr 15;77(8):2617-23. doi: 10.1021/ac0481809.

Aluminum alloys were analyzed for minor components and trace impurities using double pulse resonance-enhanced laser-induced plasma spectroscopy. The first laser pulse at 532 nm ablated the sample. The second laser pulse at 396.15 nm resonantly excited the Al atoms...

A [MnIII3O]7+ single-molecule magnet: the anisotropy barrier enhanced by structural distortion.

Inorganic chemistry

Yang CI, Wernsdorfer W, Cheng KH, Nakano M, Lee GH, Tsai HL.
PMID: 18847256
Inorg Chem. 2008 Nov 17;47(22):10184-6. doi: 10.1021/ic8012238. Epub 2008 Oct 11.

A trinuclear manganese complex, [Mn 3O(Me-salox) 3(2,4'-bpy) 3(ClO 4)].0.5MeCN ( 1.0.5MeCN; Me-H 2salox = 2-hydroxyphenylethanone oxime), has been synthesized and characterized structurally as a [Mn (III) 3(mu 3-O)] (7+) core. Structural distortion by the twisting of the oxime ligand...

Metallated conjugated polymers as a new avenue towards high-efficiency polymer solar cells.

Nature materials

Wong WY, Wang XZ, He Z, Djurisić AB, Yip CT, Cheung KY, Wang H, Mak CS, Chan WK.
PMID: 17496897
Nat Mater. 2007 Jul;6(7):521-7. doi: 10.1038/nmat1909. Epub 2007 May 13.

Bulk heterojunction solar cells have been extensively studied owing to their great potential for cost-effective photovoltaic devices. Although recent advances resulted in the fabrication of poly(3-hexylthiophene) (P3HT)/fullerene derivative based solar cells with efficiencies in the range 4.4-5.0%, theoretical calculations...

Showing 25 to 36 of 912 entries