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91.
Rajagopal Gurusamy Prasanna Nagarajan Athappan Periakaruppan 《Transition Metal Chemistry》1999,24(3):251-257
Metal complexes of general formula [Cu(L)](ClO4)2, [Ru(L)(PPh3)2]Cl2 and [Ru(L)(PPh3)Cl]Cl2[L = 1,4-di- (o-benzylidiminophenoxy/benzylidiminophenylthio)butane] containing N2O2 or N2S2 donor atoms have been prepared and characterised by spectral, magnetic and cyclic voltammetric studies. The rhombic nature of the e.s.r. spectra of the RuIII complexes indicates an asymmetry in the electronic environment around the Ru atom. e.s.r. spectra of the CuII complexes show a typical four-line spectrum with approximate tetrahedral distortion. The observed low A values in the CuII complexes, of the order of 132–160 × 10–4cm–1, indicates a tetrahedrally distorted square planar structure.The influence of modified ligands is reflected in the metal-centered redox potentials. CuII complexes having the N2S2 chromophore, in MeCN on a glassy carbon electrode, undergo quasi-reversible reduction in the 540–680 mV range. A depression in E1/2 values for the open chain N2S2 chromophoric macrocyclic CuII complexes, compared to electronically similar cyclic tetradentate CuII analogues, is due to the increased stabilization of the CuI state by added flexibility provided through the open chain donor sites. 相似文献
92.
Using the fixed point method, we investigate the generalized Hyers–Ulam stability of the ternary homomorphisms and ternary derivations between fuzzy ternary Banach algebras for the additive functional equation of n-Apollonius type, namelywhere \({n \geq 2}\) is a fixed positive integer.
相似文献
$${\sum_{i=1}^{n} f(z-x_{i}) = -\frac{1}{n} \sum_{1 \leq i < j \leq n} f(x_{i}+x_{j}) + n f (z-\frac{1}{n^{2}} \sum_{i=1}^{n}x_{i}),}$$
93.
Uchiyama S Iwai K de Silva AP 《Angewandte Chemie (International ed. in English)》2008,47(25):4667-4669
94.
Pachiappan Perumal Rajamani Sowmiya Sundaram Prasanna kumar Sundaram Ravikumar Paramasivam Deepak Govindasamy Balasubramani 《Natural product research》2018,32(11):1316-1319
The brown seaweed, Sargassum linearifolium (Turner) C. Agardh, 1820 is commonly available along the south-east coast of India. Its compound fucosterol was isolated and confirmed through spectral characterisation and chemical transformation methods. The antiplasmodial effect of the isolated fucosterol was investigated against the 3D7 chloroquine sensitive Plasmodium falciparum strain, parasitaemia percentage was determined at 48 h and morphological change was studied through microscopic examination after Giemsa staining. A perceptible antiplasmodial effect was produced by fucosterol compound against the P. falciparum and positive control, chloroquine with the IC50 values (μg/mL) of 7.48 and 12.81, respectively. Fucosterol showed higher antiplasmodial activity as compared to chloroquine. It is inferred that both the fucosterol and chloroquine could have inhibited the schizont stage of the parasite during the intra-erythrocyte asexual development. The findings underline the usefulness of the seaweed-based fucosterol and further studies are warranted. 相似文献
95.
Summary Letf, G1 × G2 C, where G
i
(i = 1, 2) denote arbitrary groups and C denotes the set of complex numbers. The general solutions of the following functional equationsf(x
1
y
1
,x
2
y
2
) +f(x
1
y
1
,x
2
y
2
-1
) +f(x
1
y
1
-1
,x
2
y
2
) +f(x
1
y
1
-1
,x
2
y
2
-1
) =f(x
1
,x
2
)F(y
1
,y
2
) +F(x
1
,x
2
)f(y
1
,y
2
) (1) andf(x
1
y
1
,x
2
y
2
) +f(x
1
y
1
,x
2
y
2
-1
) +f(x
1
y
1
-1
,x
2
y
2
) +f(x
1
y
1
-1
,x
2
y
2
-1
) =f(x
1
,x
2
)f(y
1
,y
2
) +F(x
1
,x
2
)F(y
1
,y
2
) (2) are determined assuming thatf satisfies the conditionf(x
1y1z1, x2) = f(x1z1y1, x2), f(x1, x2y2z2) = f(x1, x2z2y2) (C) for allx
i, yi, xi Gi (i = 1, 2). The functional equations (1) and (2) are generalizations of the well known rectangular type functional equationf(x
1 + y1, x2 + y2) + f(x1 + y1, x2 – y2) + f(x1 – y1, x2 + y2) + f(x1 – y1, x2 – y2) = 4f(x1, x2) studied by J. Aczel, H. Haruki, M. A. McKiernan and G. N. Sakovic in 1968. 相似文献
96.
97.
98.
99.
Punya Prasanna Paltani 《Optik》2011,122(5):464-466
We show that by exploiting unequal magnitude of cross phase modulation (XPM) in co-propagating and counter-propagating beams, an all-optical circulator (AOC) using a nonlinear Mach-Zehnder Interferometer (MZI) could be constructed. The proposed circulator is novel, simple and polarization independent. 相似文献
100.