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Abstract

Zinc acetate was used as a starting material to prepare Zn-solutions from solvents and ligands with different boiling temperature. The ZnO thin films were prepared on Si(1 0 0) substrates by spin-coating method. The effect of baking temperature and boiling temperature of the solvents and ligands on their morphologies and orientation was investigated. The solvents and ligands with high boiling temperature were favorable for relaxation of mechanical stress to form the smooth ZnO thin films. As the solvents and ligands with low boiling temperature were used to prepare Zn-solutions, the prepared ZnO thin films showed (0 0 2) preferred orientation. As n-propanol, 2-methoxyethanol, 2-(methylamino)ethanol and monoethanolamine were used to prepare Zn-solutions, highly (0 0 2)-oriented ZnO thin films were formed by adjusting the baking temperature.

Abstract

The 1, 2, 3-Conjecture states that the edges of a graph without isolated edges can be labeled from {1, 2, 3} so that the sums of labels at adjacent vertices are distinct. The 1, 2-Conjecture states that if vertices also receive labels and the vertex label is added to the sum of its incident edge labels, then adjacent vertices can be distinguished using only {1, 2}. We show that various configurations cannot occur in minimal counterexamples to these conjectures. Discharging then confirms the conjectures for graphs with maximum average degree less than 8/3. The conjectures are already confirmed for larger families, but the structure theorems and reducibility results are of independent interest.

1,25(OH)2D3 Induced Alterations in Plasma Calcium, Inorganic Phosphate, Ultimobranhial Gland and Parathyroid Gland of the Garden Lizard, Calotes Versicolor

Garden lizards Calotes versicolor were procured and given daily intraperitoneal injections of 30 pmol of 1,25(OH)2 D3/50 g body wt for 30 days. Lizards were sacrificed on the 1st, 3rd, 5th, 10th, 15th and 30th day of the experiment. The plasma calcium levels of C. versicolor remain unaffected after day 1 following 1,25(OH)2D3 treatment. After day 3 the levels increase significantly which progresses up to day 10. Thereafter, the plasma calcium level tends to decrease on day 15 and the levels become normal at day 30. In 1,25(OH)2D3 injected lizards the plasma inorganic phosphate levels remain unaltered up to day 3. After day 5, the value increases significantly. This increase progresses up to day 15. On day 30, the levels become almost normal. The ultimobranchial gland exhibits hyperactivity following 5 day 1,25(OH)2D3 treatment which is expressed by an increase in the nuclear volume and weak staining response of the cytoplasm of ultimobranchial cells. After day 10, the nuclear volume is further increased and some of the cells are exhausted. Following 15 days 1,25(OH)2D3 treatment the nuclear volume records an increase and many degenerating cells are discerned. After day 30, the nuclear volume is almost normal, most cells seem to be recovered and only a few degenerating cells are noticed. After day 10 and day 15 following 1,25(OH)2D3 treatment, the parathyroid glands of C. versicolor show reduced chromaticity of nuclei and a progressive decrease in the nuclear volume of parathyroidal cells. On day 30, the nuclear volume tends to become normal and a few degenerating cells are observed.

Abstract

A simple method for the determination of Pd2+-ions using the azo dye 1-(5-benzylthiazol-2-yl)azonaphthalen-2-ol (or BnTAN) and toluene or chloroform as extraction media is proposed. The palladium(II) ion interacts with 1-(5-benzylthiazol-2-yl)azonaphthalen-2-ol creating a chelate complex. This compound was extracted into toluene and chloroform from the alkaline and acid aqueous solutions respectively. Obtained extracts showed absorbance maxima at 600 and 684 nm. Obedience to Beer’s law was established in the range of 0.261 to 0.850 μg mL−1 of Pd(II) and the molar absorptivity of the complex of 6.70 · 103 L mol−1 cm−1 was determined. Optimum reaction conditions for complexation, the effect of variables like time of heating and pH were studied. Detailed studies to check the Pd2+ : BnTAN – stoichiometric ratio were carried out. The method was successfully applied for the analysis of Pd(II) in details of electronic devices.

Abstract

Pinus massoniana (masson pine) is the most important native pine in southern China. High-density genetic maps have not been constructed for the species. In this study, a genetic linkage map with 251 markers (47 SSRs, 23 ESTPs and 181 SRAPs) was constructed using a F1 progeny mapping population derived from controlled pollination of two parents of different provenances. At LOD 7.0, a total of 17 linkage groups were constructed with twelve groups having nine or more markers and five other groups of two to four markers each. The total map length was 1,956 cM with an average of 8.4 cM among individual loci. The current linkage map represented 93% of the estimated genome length of 2,114 cM for masson pine. Such linkage map are useful for future genomic studies of masson pine including comparative mapping in Pinaceae and quantitative trait loci (QTL) mapping for economically important traits.

Abstract

The intent to structure valuable learning experiences, focusing on student-teachers’ exercise of pedagogical creativity and informed critical reasoning, may prove particularly challenging in the current national curriculum for pre-service teacher education. It is proposed here a reflective view of the challenges to arts pre-service student-teachers understandings of concepts and processes related to curriculum development; findings of previous empirical exploratory research questioning student-teachers conceptions of learning, and identity issues related to induction practices drawing heavily on apprenticeship models of learning feed into the proposed analysis. It is concluded on possible conceptual and methodological shifts towards understanding learning in teacher education.

ABSTRACT

This paper discusses competing notions of the concept of ‘order’ in the Admonition Controversy with respect to the interpretation of the decorum of 1 Corinthians 14:26-30, a text principally concerned with order in worship. As the controversy ensued the understanding of ‘order’ broadened to include church discipline and polity, both Puritan and Conformist alike constructed their polemic with a rhetorical appeal to the Pauline text in question-interpretations at odds with each other. Furthermore, both sides understood their interpretation as standing faithfully in the tradition of Calvin. This paper follows the appeals to 1 Corinthians 14:26-40 by Advanced Protestants and Conformists from its use in the treatise ‘Of Ceremonies’ found in the Book of Common Prayer, through the Admonition to the Parliament, the responses of John Whitgift and Thomas Cartwright, and finally Richard Hooker’s Preface to the Lawes of Ecclesiastical Politie.