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1

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α-Adrenergic inhibition of thyrotropin-releasing hormone-induced prolactin secretion in GH"4C"1 cells is associated with a depressed rise in intracellular Ca^2^+

Inukai, T. ; Wang, X. ; Greer, M.A.

Amsterdam : Elsevier

Molecular and Cellular Endocrinology 87 (1992), S. 29-34

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ISSN: 0303-7207

Keywords: Calcium ; GH"4C"1 cell ; Prolactin ; β-Adrenergic agonist

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Medicine

Type of Medium: Electronic Resource

URL: http://linkinghub.elsevier.com/retrieve/pii/0303-7207(92)90230-4

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2

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Medium hyperosmolarity inhibits prolactin secretion induced by depolarizing K^+ in GH"4 C"1 cells by blocking Ca^2^+ influx

Wang, X. ; Sato, N. ; Greer, M.A.

Amsterdam : Elsevier

Molecular and Cellular Endocrinology 83 (1992), S. 79-84

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ISSN: 0303-7207

Keywords: Calcium ; Hyperosmolarity ; Potassium ; Prolactin ; Secretion

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Medicine

Type of Medium: Electronic Resource

URL: http://linkinghub.elsevier.com/retrieve/pii/0303-7207(92)90198-F

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3

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Is bicarbonate in Photosystem II the equivalent of the glutamate ligand to the iron atom in bacterial reaction centers?

Wang, X. ; Cao, J. ; Maroti, P. ; [et al.]

Amsterdam : Elsevier

Biochimica et Biophysica Acta (BBA)/Bioenergetics 1100 (1992), S. 1-8

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ISSN: 0005-2728

Keywords: (Rb. sphaeroides) ; Bicarbonate effect ; Electron acceptor complex ; Electron transfer ; Photosynthesis ; Quinone ; Reaction center ; Site-directed mutagenesis

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Chemistry and Pharmacology , Medicine , Physics

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1016/0005-2728(92)90119-M

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4

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Is bicarbonate in Photosystem II the equivalent of the glutamate ligand to the iron atom in bacterial reaction centers?

Wang, X. ; Cao, J. ; Maroti, P. ; [et al.]

Amsterdam : Elsevier

Biochimica et Biophysica Acta (BBA)/Protein Structure and Molecular 1100 (1992), S. 1-8

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ISSN: 0167-4838

Keywords: (Rb. sphaeroides) ; Bicarbonate effect ; Electron acceptor complex ; Electron transfer ; Photosynthesis ; Quinone ; Reaction center ; Site-directed mutagenesis

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Chemistry and Pharmacology , Medicine

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1016/0167-4838(92)90529-M

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5

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Dopamine inhibits cell swelling-induced prolactin secretion in MMQ cells by blocking Ca^2^+ influx

Sato, N. ; Wang, X. ; Greer, M.A.

Amsterdam : Elsevier

Molecular and Cellular Endocrinology 82 (1991), S. 99-106

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ISSN: 0303-7207

Keywords: Calcium channel ; MMQ cell ; Osmolar concentration ; Prolactin ; Secretion ; Thyrotropin

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Medicine

Type of Medium: Electronic Resource

URL: http://linkinghub.elsevier.com/retrieve/pii/0303-7207(91)90013-I

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6

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Structure and electrical characteristics of ICBD C60 films (1996)

Shi, Y. ; Xiong, C. M. ; Wang, X. S. ; [et al.]

Springer

Applied physics 63 (1996), S. 353-357

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ISSN: 1432-0630

Keywords: PACS: 61.46.+W ; 68.55.Jk ; 73.40.Lq

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Abstract. Polycrystalline C60 films are deposited onto a variety of substrates by ionized cluster beam deposition (ICBD) technique. The structure of the ICBD C60 films are studied by transmission electron microscopy (TEM). The electrical characteristics of the ICBD C60 films on silicon substrates are investigated by current–voltage (I–V) measurements. The ICBD C60/p-Si and C60/n-Si heterostructures show strong current rectification, which is analyzed using band theory.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s003390050398

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7

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Structure and electrical characteristics of ICBD C60 films (1996)

Shi, Y. ; Xiong, C. M. ; Wang, X. S. ; [et al.]

Springer

Applied physics 63 (1996), S. 353-357

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ISSN: 1432-0630

Keywords: 61.46.+W ; 68.55.Jk ; 73.40.Lq

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Abstract Polycrystalline C60 films are deposited onto a variety of substrates by ionized cluster beam deposition (ICBD) technique. The structure of the ICBD C60 films are studied by transmission electron microscopy (TEM). The electrical characteristics of the ICBD C60 films on silicon substrates are investigated by current-voltage (I–V) measurements. TheICBD C60/p-Si and C60/n-Si heterostructures show strong current rectification, which is analyzed using band theory.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01567326

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8

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Contrasting patterns of genetic diversity in two tropical pines: Pinus kesiya (Royle ex Gordon) and P. merkusii (Jungh et De Vriese) (1996)

Szmidt, A. E. ; Wang, X.-R. ; Changtragoon, S.

Springer

Theoretical and applied genetics 92 (1996), S. 436-441

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ISSN: 1432-2242

Keywords: Pinus ; Allozymes ; Chloroplast DNA ; Genetic variation ; Evolution

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract We studied allozyme and chloroplast (cp) DNA variation in natural populations of Pinus kesiya and P. merkusii from Thailand and Vietnam. The results showed striking differences between the two species in the amount and distribution of allozyme variation. P. kesiya harboured considerable allozyme variation and showed weak interpopulational differentiation. In contrast, P. merkmii had very low intrapopulational variability but a high level of interpopulational differentiation. The average Nei's genetic distance separating the two species was exceptionally high (0.701) taking into account their close taxonomic placement in the same subsection Sylvestres. The constructed phylogenetic trees revealed very early divergence of P. kesiya and P. merkusii. The present analysis of cpDNA variation also confirmed the dissimilar character of these two species and was compatible with other evidence indicating the outstanding position of P. merkusii as compared to other Asian members of the subsection Sylvestres. Analysis of cpDNA variation in sympatric populations of P. kesiya and P. merkusii revealed that they are pure representatives of the species in question. This result indicates that despite an overlapping distribution P. kesiya and P. merkusii do not hybridise in nature. We suggest that the distinctive character of P. merkusii is a result of an early separation from other Eurasian pines. Despite spatial proximity, P. kesiya and P. merkusii are kept apart by strong reproductive barriers. The low genetic variability of P. merkusii may be explained by previous bottlenecks, reduced gene flow among populations, and an inbreeding due to small population size and asynchronous flowering.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00223690

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9

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Evolutionary analysis of Pinus densata Masters, a putative Tertiary hybrid (1990)

Wang, X. -R. ; Szmidt, A. E. ; Lewandowski, A. ; [et al.]

Springer

Theoretical and applied genetics 80 (1990), S. 635-640

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ISSN: 1432-2242

Keywords: Pinus ; Species hybridization ; Allozymes ; Evolution

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Summary Allozyme differentiation at 13 loci was studied in populations of Pinus tabulaeformis, P. densata, and P. yunnanensis from China. It was previously suggested that P. densata represents a Tertiary hybrid between P. tabulaeformis and P. yunnanensis. The observed levels of allozyme variation within and among the investigated species were comparable to those of other conifers. P. tabulaeformis differed markedly from P. yunnanensis with respect to allozyme frequencies, while P. densata was intermediate between the two putative parents. There was evidence of homozygote excess in embryos from all investigated species, as compared to Hardy-Weinberg expectations. The observed allozyme composition of P. densata conformed to earlier morphological and molecular evidence indicating hybrid origin of this taxon. It was proposed that fusion of gene pools from P. tabulaeformis and P. yunnanensis has led to adaptive evolution of a new species, P. densata.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00224223

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10

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Molecular systematics and genetic differentiation of Pinus sylvestris (L.) and P. densiflora (Sieb. et Zucc.) (1993)

Szmidt, A. E. ; Wang, X. -R.

Springer

Theoretical and applied genetics 86 (1993), S. 159-165

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ISSN: 1432-2242

Keywords: Allozymes ; Chloroplast DNA ; Introgression ; Evolution

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Summary Allozyme variation was examined in 22 populations of Pinus densiflora (Sieb, et Zucc.) and four geographic varieties of P. sylvestris (L.): var ‘lapponica’ (Fries, Hartman), var ‘armena’ (Komarov), var ‘mongolica’ (Litvinov) and var ‘sylvestriformis’ (Takenouchi). In addition, we developed paternal chloroplast (cp) DNA markers that distinguish P. densiflora from var ‘lapponica’, var ‘armena’ and var ‘mongolica’. UPGMA cluster analysis based on Nei's distances between all pairwise combinations of the 22 populations revealed patterns corresponding strictly to geographic origin and taxonomic status. Analysis of allozyme variation in var ‘lapponica’, var ‘armena’ and var ‘mongolica’ demonstrated a high level of intrapopulational variability but a low level of interpopulational differentiation. It appears that the late Pleistocene blending of genetically diverse populations was responsible for the observed variation patterns. The constructed phylogenetic trees also showed late divergence of these three varieties. The var ‘sylvestri formis’ was genetically distinct from the other three P. sylvestris varieties. The genetic distances separating var ‘sylvestriformis’ from P. densiflora and the other taxa lend support to a separate taxonomic status for var ‘sylvestriformis’ and a close relation with P. densiflora. We found that var ‘sylvestriformis’ harbors admixtures of allozymes and cpDNA from both P. sylvestris and P. densiflora, which suggests an introgressive nature of this variety. Levels of intrapopulational variability were similar in P. sylvestris and P. densiflora, but interpopulational differentiation was much higher in P. densiflora. In the constructed phylogenetic trees, populations of this species were characterized by relatively long internode distances and branch lengths. The present results suggest that P. densiflora has a more advanced evolutionary age than P. sylvestris.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00222074

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