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Effect of Ni Doping on the Growth and Properties of Mn-L-Histidine Hydrochloride Monohydrate Crystals
J. Sai Chandra,P. N. V. V. L. Prameela Rani,V. Parvathi,Y. Sunandamma
International Journal of Inorganic Chemistry , 2013, DOI: 10.1155/2013/716819
Abstract: The main focus of this work had been to grow good quality crystals from amino acids and amino acid-based materials for nonlinear optics (NLO) applications. For the first time, a series of amino acid complexes doped with transition metal ions were grown in our laboratory from aqueous solutions by slow evaporation technique. Ni(II) ion doped Manganese L-Histidine hydrochloride monohydrate (Ni(II)-MnLHICl) crystals were grown on the same lines and were characterized by powder X-ray diffraction (XRD), optical absorption, electron paramagnetic resonance, and infrared absorption studies. From Powder XRD, the unit cell lattice parameters were calculated as ？nm, ？nm and ？nm. From electron paramagnetic resonance (EPR) spectra, isotropic “g” factor and spin hamiltonian parameter A all were calculated as 2.0439 and , respectively. From optical absorption studies, crystal field splitting value ( ) and the interelectron repulsion parameters B and C were calculated for Ni2+ and Mn2+ as ？cm？1, ？cm？1, ？cm？1 and ？cm？1, ？cm？1, ？cm？1, respectively. The presence of various functional groups and the modes of vibrations were confirmed by FTIR studies. 1. Introduction Doping is a well-chosen and widely accepted technique for incorporating the required physical properties in a bulk material for technological applications [1–3]. The technique has been extensively explored to modify the properties like electrooptical (photoluminescence), conductivity and crystal growth [4]. It has also been demonstrated that metal ion dopants are the most versatile in modifying the properties of a compound [5]. Metal amino acid interactions have been widely studied because of their biological importance. Metal amino acid complexes constitute very important model systems in order to understand the electronic properties of metal ions in biologically important macromolecules [6]. Amino acid complexes doped with transition metal ions are suitable model systems for understanding the basic aspects of role of metals in proteins [7, 8]. L-Histidine is an optically active α-amino acid in its laevo-form and is a tridentate ligand that has an imidazole ring, amino, and carboxylate groups. It is also a protein-forming amino acid playing a fundamental role in several biological mechanisms including the formation of hemoglobin and is being used in the treatment of allergic diseases and anemia [9]. Complexes of amino acids with metal ion dopants combine the advantage of organo amino acid with that of inorganic metal ions [10]. Multidentate complexes of amino acids with metal ion dopants are at present
RP-HPLC Determination of Raloxifene in Pharmaceuticl Tablets
P. Venkata Reddy,B. Sudha Rani,G. Srinu Babu,J. V. L. N. Seshagiri Rao
Journal of Chemistry , 2006, DOI: 10.1155/2006/713569
Abstract:
Application of Brusov-Filatova-Orekhova Theory (BFO Theory) and Modigliani-Miller Theory (MM Theory) in Rating  [PDF]
P. N. Brusov, T. V. Filatova, N. P. Orekhova, V. L. Kulik
Theoretical Economics Letters (TEL) , 2018, DOI: 10.4236/tel.2018.85062
Abstract: The paper is devoted to application of Brusov-Filatova-Orekhova theory (BFO theory) and Modigliani-Miller theory (MM theory) in rating. A serious modification of both theories in order to use them in rating procedure has been required. The financial “ratios” (main rating parameters) were introduced into both these theories. The necessity of an appropriate use of financial flows discounting in rating methodologies is discussed. The dependence of the weighted average cost of capital (WACC), which plays the role of discount rate, on coverage and leverage ratios is analyzed. The use of BFO theory allows applying obtained results for real economics, for companies with finite lifetime, introduce a factor of time into theory, estimate the creditworthiness of companies of arbitrary lifetime (or arbitrary age), introduce the financial flows discounting, using the correct discount rate etc. Obtained results made possible to use the power of these theories in the rating and create a new base for rating methodologies, by other words this allows develop a new approach to methodology of rating, requiring a serious modification of existing rating methodologies. The article is organized as follows: In Section 2, we modify for the first time the Modigliani-Miller theory (perpetuity limit of BFO theory) for rating needs and introduce the financial “ratios” (a direct and inverse) into this theory. As well we analyze here the dependence of company’s weighted average cost of capital (WACC) on the coverage ratios and on the leverage ones. In Section 3, we discuss the method of evaluation of the discount rate with using one or a few financial “ratios”. In Section 4, the conclusions concerning the application of perpetuity limit of the modern theory of capital structure—BFO theory (MM theory) in rating have been done. In Section 5, we modify for the first time the general version of BFO theory (for companies of arbitrary age) for rating needs and introduce the financial “ratios” (a direct and inverse) into this theory. Here we as well analyze the dependence of company’s weighted average cost of capital (WACC) on the coverage ratios and on the leverage ones. We make calculations for two company ages (three and five years) in order to demonstrate that developed approach could be applied for companies of arbitrary age and to have a possibility to compare results for companies of different ages. Section 6 is devoted to conclusions made by the analysis of obtained results. Application of developed methods to rating is discussed here as well as completely new horizons which are
Seroepidemiology of Leptospirosis in Andhra Pradesh
Nataraj Seenivasan N,Rani Prameela D.,Sreenivasulu D,Vijayachari P
- , 2013,
Abstract: eptospirosis is worldwide zoonosis and considered as re emerging disease. Besides economic losses caused by leptospira to animal pro- duction, its zoonotic character makes it an important public health problem. Seroepidemiological study was conducted by MAT randomly according to season, region and district wise of Andhra Pradesh. A total of 2320 serum samples randomly from apparently healthy ani- mals of cattle, buffaloes, sheep, goats, pigs and dogs and 258 serum samples from clinically suspected cases of both animals and humans were subjected for MAT. Overall seropositivity of 20 percent in appar- ently healthy animals, cattle, sheep, goat and dogs was found to be 19.1% 18.67%, 14.63%, 36.84% and 15.15% respectively. Similarly seropositivity in clinically suspected cases (33.37%) of cattle (28.94%) sheep (21.69%) pigs (50.0%) dogs (31.43%) and humans (61.76%) respectively. High seroprevalence in coastal regions (23.09%) followed by Rayalseema (17.49%) and Telangana (16.30%) was observed. High seropositivity was recorded during north east mansoon (28.29%) followed by south west mansoon (21.45%) and lowest in summer (7.26%)
Multiwavelength Intraday Variability of the BL Lac S5 0716+714
Alok C. Gupta,T. P. Krichbaum,P. J. Wiita,B. Rani,K. V. Sokolovsky,P. Mohan,A. Mangalam,N. Marchili,L. Fuhrmann,I. Agudo,U. Bach,R. Bachev,M. B？ttcher,K. E. Gabanyi,H. Gaur,K. Hawkins,G. N. Kimeridze,O. M. Kurtanidze,S. O. Kurtanidze,C. -U. Lee,X. Liu,B. McBreen,R. Nesci,G. Nestoras,M. G. Nikolashvili,J. M. Ohlert,N. Palma,S. Peneva,T. Pursimo,E. Semkov,A. Strigachev,J. R. Webb,H. Wiesemeyer,J. A. Zensus
Physics , 2012, DOI: 10.1111/j.1365-2966.2012.21550.x
Abstract: We report results from a 1 week multi-wavelength campaign to monitor the BL Lac object S5 0716+714 (on December 9-16, 2009). In the radio bands the source shows rapid (~ (0.5-1.5) day) intra-day variability with peak amplitudes of up to ~ 10 %. The variability at 2.8 cm leads by about 1 day the variability at 6 cm and 11 cm. This time lag and more rapid variations suggests an intrinsic contribution to the source's intraday variability at 2.8 cm, while at 6 cm and 11 cm interstellar scintillation (ISS) seems to predominate. Large and quasi-sinusoidal variations of ~ 0.8 mag were detected in the V, R and I-bands. The X-ray data (0.2-10 keV) do not reveal significant variability on a 4 day time scale, favoring reprocessed inverse-Compton over synchrotron radiation in this band. The characteristic variability time scales in radio and optical bands are similar. A quasi-periodic variation (QPO) of 0.9 - 1.1 days in the optical data may be present, but if so it is marginal and limited to 2.2 cycles. Cross-correlations between radio and optical are discussed. The lack of a strong radio-optical correlation indicates different physical causes of variability (ISS at long radio wavelengths, source intrinsic origin in the optical), and is consistent with a high jet opacity and a compact synchrotron component peaking at ~= 100 GHz in an ongoing very prominent flux density outburst. For the campaign period, we construct a quasi-simultaneous spectral energy distribution (SED), including gamma-ray data from the FERMI satellite. We obtain lower limits for the relativistic Doppler-boosting of delta >= 12-26, which for a BL\,Lac type object, is remarkably high.
Synthesis and Antimicrobial Activity of New Pyridine Containing Substituted Phenyl Azetidine-2-One Derivatives  [PDF]
V. Esther Rani, P. Raveendra Reddy
Open Journal of Medicinal Chemistry (OJMC) , 2018, DOI: 10.4236/ojmc.2018.82003
Abstract: The most important nitrogen containing heterocycles of pyridine containing substituted phenyl azetidine-2-ones have found pharmacological application such as antibiotics and these compounds also have practical importance. The structure of the new derivatives was confirmed by the spectral data and elemental analyses. Out of five new derivatives, three were revealed mild to moderate activity compared with Streptomycin & Fluconazole as a reference standard. Among this new series, 3-chloro-1-(4-fluoro phenyl)/(4-chloro phe-nyl)-4-(pyridine-3-yl) azetidine-2-one (4a & b) were found most activity.
Familial Background of Complex Diseases in PCOS Probands of South Indian Population
M.L.N. Deepika,K. Ranjith,V. Usha Rani,M. Ishaq
Asian Journal of Epidemiology , 2012,
Abstract: Polycystic Ovary Syndrome (PCOS) is a common reproductive health problem associated with long term complications. It is a condition of high clinical heterogeneity with familial clustering, however, the mode of inheritance is still controversial. A number of candidate genes have been implicated in susceptibility to PCOS, suggesting a strong role of genetic factor in the aetiopathogenesis of PCOS. The aim of the present study was to determine possible association between PCOS and family history of complex genetic diseases such as PCOS, Menstrual disturbance, type II Diabetes and Cardiovascular diseases. A total of 432 individuals comprising of 206 patients and 226 controls were involved in the present study. Clinical information, anthropometric measurements and three generation pedigree data with respect to CD was collected through proforma. Twenty five percent of PCOS probands exhibited clinical hyperandrogenism in the form of hirsutism, acne, premature pubarche and alopecia. Eighteen percent showed acanthosis, a marker for insulin resistance. Twenty percent of the patients were under the category of amenorrhea; while remaining 75% of cases were either with primary/secondary infertility. The anthropometric analysis revealed higher BMI and W/H ratio in the patient group compared to the controls. A high frequency of PCOS women exhibited the prevalence of complex diseases in their families compared to the control families (60 vs. 20%; p<0.05). It is suggested that complex diseases provide significant genetic background for the susceptibility to develop this multifactorial disorder in a section of patients.
Spectrophotometric Determination of Ziprasidone in Pharmaceutical Formulations
G. Srinubabu,B. Sudha Rani,J. V. L. N. Seshagiri Rao
Journal of Chemistry , 2006, DOI: 10.1155/2006/643624
Abstract:
Sparing Treatment of Thoracic and Abdominal Aortic Aneurysms  [PDF]
V. P. Krylov, D. E. Shevtsov, G. A. Popel, A. S. Zhigalkovich, V. N. Gaiduk, L. I. Reut, A. L. Smolyakov, L. G. Shestakova, N. V. Mankevich
Health (Health) , 2018, DOI: 10.4236/health.2018.104037
Abstract: A comparison of results of sparing treatment obtained at 2, 4 and 6 years of follow-up in subjects with descending aortic atherosclerotic aneurysms (DAAs), and during the period between 1.5 and 8.9 years in subjects with dissecting thoracoabdominal aortic aneurysms (DTAAs) has been made. All subjects received conservative treatment to maintain optimal levels of BP, cholesterol and LDL cholesterol, as well as to reduce oxidative and inflammatory processes in aorta, strengthen aortic walls and stabilize the course of the disease. Rapid negative changes (diameter increased by more than 5 mm within a 6-month period) and the absence of contraindications for surgery prompted us to perform open or endovascular aortic repair. Available data suggest that both DAAs and TAAs are comorbidities, which at any time can abruptly terminate patient’s life, and operative treatment guarantees no safety from ruptures. When using sparing treatment of DAA, survival rates were 90.1% at 2 years, 76.8% at 4 years, and 59.4% at 6 years, with uniform survival increment mainly due to comorbidity. Survival rate seen in TAA group (81.8%) was more acceptable due to a younger age of patients.
A Seismotectonic Zonation Map of Eastern Siberia: New Principles and Methods of Mapping  [PDF]
L. P. Imaeva, V. S. Imaev, O. P. Smekalin, N. N. Grib
Open Journal of Earthquake Research (OJER) , 2015, DOI: 10.4236/ojer.2015.44011
Abstract: The paper reviews goals and objectives, stages and components of a seismotectonic study conducted in Eastern Siberia, Russia. Based on a comprehensive analysis of geological and geophysical data, our study establishes whether the local earthquakes are of tectonic origin and reveals relationships among earthquakes with recent geodynamic processes in the area under study. Seismic hazard assessment and evaluation of tectonic processes are the two major closely interrelated aspects of seismotectonic studies. A seismotectonic study is generally combined with a seismic study and conducted prior to the stage of detailed seismic zonation (DSZ) which is followed by seismic micro-zonation (SMZ). In three stages of the seismotectonic study, we analyze specific geological structures, reveal the regional dynamics of seismotectonic processes, clarify details of potential seismic hazard locations and identify sites of the potential instantaneous deformation of the crust which may take place due to active faulting. Based on results of our longterm studies, a seismotectonic zonation map of Eastern Siberia is compiled. The paper briefly reviews the methods of mapping and refers to data on active faults and neotectonic structures revealed in the area under study, which are closely related to regional earthquake sources.
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