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Experimental investigation on elevated water tanks with base isolation – response spectrum approach

Vimal Paul P. A., Regin Joseph D. J., Jinu Gowthami T. R., Chettiar Chembakaraman G.

Journal of Theoretical and Applied Mechanics

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2020

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Vol. 58 nr 4

885--899

EN

Elevated water tanks in an empty condition, though not important in structural design, becomes an important problem in seismic design. The objective of the present research is to investigate the elevated water tanks in empty and in filled conditions and to emphasize the importance of seismic response. Four elevated tanks with various parameters are selected for seismic analysis with the base isolation technique. It is found out that empty tanks are highly vulnerable to earthquake effects, whereas filled tanks can be mitigated by providing base isolation. A simple experimental investigation has also been carried out to validate the analytical results.

2

Modelling sequential events for risk, safety and maintenance assessments

Eid M.

Journal of Polish Safety and Reliability Association

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2010

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Vol. 1, No. 1

83--88

EN

Assessing the Occurrence Probability of a given sequence of events in a determined order is necessary in many scientific fields. That is the case in the following fields: nucleation and microstructure growth in materials, Narrow-Band process, financial risk analysis, Sequential detection theory, rainfall modelling, in optics to model the sequences of photoelectrons under detection, population biology, software reliability, queuing in network traffic exhibiting long-range dependence behaviour, and DNA sequences and gene time expression modelling. However, the topic has a particular interest in the field of risk, safety and maintenance assessments. The lecture will focus on sequences composed of Double Stochastic Poisson Processes.

3

Thermal, Spectral and Biological Studies of Co(II) and Cu(II) Thiohydrazide and Thiodiamine Complexe

Mishra K. A., Mishra S. B., Mamba B. B., Chhillar A. K.

Polish Journal of Chemistry

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2009

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Vol. 83, nr 6

1085-1098

EN

The synthesis, physico-chemical investigation and biological studies of some metal complexes of thiohydrazide and thiodiamine ligands are described. The ligands are obtained by the addition and the metathesis reaction with diphenyl amine. The ratio of the metal:ligand was 1:2 for all the complexes. Copper(II) and cobalt(II) complexes of type [Cu(L)2Cl2] and [Co(L)2SO4] [where L = N,N-diphenyl-N-thiohydrazide (L1) and (N,N-diphenyl-N-thio)-1,3-propanediamine (L2)] have been synthesized. The synthesized copper and cobalt thiohydrazide and thiodiamine complexes were characterized by elemental analysis, FT-IR, mass, UV-Vis and 1H NMR spectroscopic studies. The thiohydrazides and the thiodiamines coordinate as a bidentate N-S ligand. The binding sites are the azomethine nitrogen and thioamide sulphur. In vitro antifungal and in vitro antibacterial studies were performed against fungal and bacterial strains, Aspergillus fumigatus, Aspergillus flavus, Aspergillus niger and Escherichia coli, Pseudomonas aeruginosa respectively. Thermodynamic parameters such as order of reaction and activation energy (Ea) for the dehydration and decomposition reactions for one complex have also been evaluated.

4

Novel Coordination Complexes of the Trivalent Ruthenium, Rhodium and Iridium with Hydrazones Derived from Isatin Hydrazide and Various Aldehydes with Spectral and Biological Characterization

Sharma V., Srivastava S., Srivastava A.

Polish Journal of Chemistry

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2006

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Vol. 80, nr 3

387-396

EN

Aseries of several new ruthenium(III), rhodium(III) and iridium(III) complexes with hydrazones of general formula [M(LH)3]Cl3 were synthesized in order to meet requirements essential for biological properties. Hydrazones were formed by isatin hydrazide and various aldehydes namely anisaldehyde, benzaldehyde, o-chlorobenzaldehyde, p-chlorobenzaldehyde and p-fluorobenzaldehyde. Physicochemical characterization of compounds has been carried out by elemental analyses, spectroscopic (IR, electronic, 1H NMR), thermogravimetric and magnetic studies. These complexes show higher conductance values, supporting their electrolytic nature. All the studies revealed octahedral nature of the complexes with nitrogen and oxygen of azomethine and carbonyl group as binding sites and exhibited monomeric nature of the complexes. Rhodium(III) and iridium( III) complexes were found diamagnetic and show intense absorptions while ruthenium( III) complexes show paramagnetic behaviour. In addition, antifungal and antibacterial studies have been carried out in vitro for investigated compounds against fungus A. niger and F. oxysporium and bacteria E. coli and S. aureus. Most of the metal chelates show higher biocidal activity for the above microorganisms than that of the free ligand.

5

Review of drop analysis technology for liquid property study

Song Q., Zhang G. X., Qiu Z. R.

Opto-Electronics Review

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2005

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Vol. 13, No. 1

1--8

EN

Drop analysis takes a multidisciplinary and integrated approach to monitor the drop growth in the process of liquid forming into the drop, so as to measure the physical and chemical parameters of the tested liquids and to discriminate different liquids qualitatively and quantitatively. In this paper, fiber drop analysis (FDA), capacitive drop analysis (CDA), image drop analysis (IDA,) and spectral drop analysis (SDA) are summarized in review. Main features and application fields of each method are introduced. The combination of various drop analysis technologies and its significance are presented.

6

Schiff Base Metal Complexes of Chromium(III), Manganese(III), Iron(III), Oxovanadium(IV), Zirconium(IV) and Dioxouranium(VI)

Mandlik P., Aswar A.

Polish Journal of Chemistry

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2003

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Vol. 77 / nr 2

129-135

EN

The Schiff base 2,5-dihydroxyacetophenone isonicotinoyl hydrazone (H2L) has been synthesized by condensation of 2,5-dihydroxyacetophenone with isonicotinoyl hydrazide in ethanol. Metal complexes of the Schiff base were prepared from salts of Cr(III), Mn(III), Fe(III), VO(IV), Zr(IV) and UO2(VI). Characterization of the ligand and its metal complexes were carried out by elemental analysis, molar conductivity, magnetic susceptibility measurements, IR, 1H NMR, electronic and thermogravimetric analysis in air. The Schiff base behaves as flexidentate ligand and commonly coordinates through the oxygen atom of the deprotonated phenolic group and the nitrogen atom of azomethine group. The thermal data have been analyzed for the kinetic parameters by Broido and Horowitz-Metzger methods. All the compounds were also screened for their antimicrobial activity by agar cup-plate method against various organisms and the results have been compared.

7

Synthetic, structural, thermal and Electrical Properties of Some Transition metal Polymeric Chelatres of Bis(mercaptoacetamido)diaminobutane

Mohod R.

Polish Journal of Chemistry

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2001

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Vol. 75, nr 9

1229-1235

EN

Polymeric chelates of bis(mercaptoacetamido)-1,4-diaminobutane (BMADB) with manganese( II), cobalt(II), nickel(II), copper(II), zinc(II) and cadmium(II) ions have been synthesized and characterized by elemental analysis, magnetic moment, infrared, electronic spectra and thermal analysis. In the present investigation the ligand BMADB exhibits bis-bidentate character and coordinates symmetrically with metal through nitrogen of amido and sulfur of mercapto groups. The thermogravimetric studies indicate a two stage decomposition and the presence of water molecules. Thermal data have been analyzed by Freeman-Carroll and Sharp-Wentworth methods and various kinetic and thermodynamic parameters have also been evaluated. Comparable values of parameters indicate common decomposition reaction mode in all chelates. Their d.c. electrical conductivity in pellet form over a wide range of temperatures have also been studied.