Synthesis of New VO(II), Co(II), Ni(II) and Cu(II) Complexes with Isatin-3-Chloro-4-Floroaniline and 2-Pyridinecarboxylidene-4-Aminoantipyrine and their Antimicrobial Studies

Mishra, Anand P.,Mishra, Rudra,Jain, Rajendra,Gupta, Santosh The Korean Society of Mycology 2012 Mycobiology Vol.40 No.1

The complexes of tailor made ligands with life essential metal ions may be an emerging area to answer the problems of multi drug resistance. The coordination complexes of VO(II), Co(II), Ni(II) and Cu(II) with the Schiff bases derived from isatin with 3-chloro-4-floroaniline and 2-pyridinecarboxaldehyde with 4-aminoantipyrine have been synthesized by conventional as well as microwave methods. These compounds have been characterized by elemental analysis, molar conductance, electronic spectra, FT-IR, FAB mass and magnetic susceptibility measurements. FAB mass data show degradation of complexes. Both the ligands behave as bidentate and tridentate coordinating through O and N donor. The complexes exhibit coordination number 4, 5 or 6. The Schiff base and metal complexes show a good activity against the bacteria; $Staphylococcus$ $aureus$, $Escherichia$ $coli$ and $Streptococcus$ $fecalis$ and fungi $Aspergillus$ $niger$, $Trichoderma$ $polysporum$, $Candida$ $albicans$ and $Aspergillus$ $flavus$. The antimicrobial results also indicate that the metal complexes are better antimicrobial agents as compared to the Schiff bases. The minimum inhibitory concentrations of the metal complexes were found in the range 10-40 ${\mu}g/mL$.

Effect of Repetitive Transcranial Magnetic Stimulation on Seizure Frequency and Epileptiform Discharges in Drug-Resistant Epilepsy: A Meta-Analysis

Archana Mishra,Rituparna Maiti,Biswa Ranjan Mishra,Monalisa Jena,Anand Srinivasan 대한신경과학회 2020 Journal of Clinical Neurology Vol.16 No.1

Background and Purpose The role of low-frequency repetitive transcranial stimulation (rTMS) in drug-resistant epilepsy (DRE) has been conflicting and inconclusive in previous clinical trials. This meta-analysis evaluated the efficacy of rTMS on seizure frequency and epileptiform discharges in DRE. Methods A standard meta-analysis protocol was registered in the International Prospective Register of Ongoing Systematic Reviews (PROSPERO: CRD42018088544). After performing a comprehensive literature search using specific keywords in MEDLINE, the Cochrane database, and the International Clinical Trial Registry Platform (ICTRP), reviewers assessed the eligibility and extracted data from seven relevant clinical trials. Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines were followed in the selection, analysis, and reporting of findings. A random-effects model was used to estimate the effect size as the mean difference in seizure frequency and interictal epileptiform discharges between the groups. Quality assessment was performed using a risk-of-bias assessment tool, and a meta- regression was used to identify the variables that probably influenced the effect size. Results The random-effects model analysis revealed a pooled effect size of -5.96 (95% CI= -8.98 to -2.94), significantly favoring rTMS stimulation (p=0.0001) over the control group with regard to seizure frequency. The overall effect size for interictal epileptiform discharges also significantly favored rTMS stimulation (p<0.0001), with an overall effect size of -9.36 (95% CI=-13.24 to -5.47). In the meta-regression, the seizure frequency worsened by 2.00±0.98 (mean±SD, p=0.042) for each week-long lengthening of the posttreatment follow-up period, suggesting that rTMS exerts only a short-term effect. Conclusions This meta-analysis shows that rTMS exerts a significant beneficial effect on DRE by reducing both the seizure frequency and interictal epileptiform discharges. However, the meta-regression revealed only an ephemeral effect of rTMS.

Fair and equitable treatment standard in international investment Law: An analysis vis-avis public international law

( Astha Mishra ),( Anand Mishra ) 고려대학교 법학연구원 2012 Korea University Law Review Vol.11 No.-

International investment law is the fastest growing area of international law, but also a field that faces considerable challenges and criticism. The obligation to provide fair and equitable treatment under which investment must be observed in good faith, is often stated, together with other standards, as part of the protection due to foreign direct investment by host countries, It is an absolute standard of treatment, i.e. a standard that states the treatment to be accorded in terms whose exact meaning has to be determined, by reference to specific circumstances of application, as opposed to the relative standards embodied in national treatment and most favoured nation principles. It is to be noted that the obligation of the parties to investment agreements to provide to each other`s investments fair and equitable treatment has been given various interpretations based on the specific terms of a particular treaty, its context, negotiating history or other indications of the parties` intent. So meaning of the standard varies from treaty to treaty. . Thus sometimes the vagueness among the phrases in treaties is given intentionally to give arbitrators the possibility to articulate the range of principles necessary to achieve the treaty`s purpose in particular disputes. The paper provides factual elements of information on jurisprudence, literature and state practice related to the fair and equitable treatment standard. It examines the origins of the standard and its use in international agreements and state practice. The authors in the paper outline a public law approach to international investment law in which it has been suggested to adopt specific methodology for conceptualizing international investment law and thereby examine relationship of fair and equitable treatment with the minimum standard of the international customary law and discussing the elements of its normative content as identified by arbitral tribunals. Also the paper deals with the circumscribing of power and the role of the arbitrators in the international investment disputes.

Towards spin-polarized two-dimensional electron gas at a surface of an antiferromagnetic insulating oxide

Mishra, Rohan,Kim, Young-Min,He, Qian,Huang, Xing,Kim, Seong Keun,Susner, Michael A.,Bhattacharya, Anand,Fong, Dillon D.,Pantelides, Sokrates T.,Borisevich, Albina Y. American Physical Society 2016 Physical Review B Vol.94 No.4

<P>The surfaces of transition-metal oxides with the perovskite structure are fertile grounds for the discovery of novel electronic and magnetic phenomena. In this article, we combine scanning transmission electron microscopy (STEM) with density functional theory (DFT) calculations to obtain the electronic and magnetic properties of the (001) surface of a (LaFeO3)(8)/(SrFeO3)(1) superlattice film capped with four layers of LaFeO3. Simultaneously acquired STEM images and electron-energy-loss spectra reveal the surface structure and a reduction in the oxidation state of iron from Fe3+ in the bulk to Fe2+ at the surface, extending over several atomic layers, which signals the presence of oxygen vacancies. The DFT calculations confirm the reduction in terms of oxygen vacancies and further demonstrate the stabilization of an exotic phase in which the surface layer is half metallic and ferromagnetic, while the bulk remains antiferromagnetic and insulating. Based on the calculations, we predict that the surface magnetism and conductivity can be controlled by tuning the partial pressure of oxygen.</P>

Oxygen-Vacancy-Induced Polar Behavior in (LaFeO₃)₂/(SrFeO₃) Superlattices

Mishra, Rohan,Kim, Young-Min,Salafranca, Juan,Kim, Seong Keun,Chang, Seo Hyoung,Bhattacharya, Anand,Fong, Dillon D.,Pennycook, Stephen J.,Pantelides, Sokrates T.,Borisevich, Albina Y. American Chemical Society 2014 NANO LETTERS Vol.14 No.5

<P>Complex oxides displaying ferroelectric and/or multiferroic behavior are of high fundamental and applied interest. In this work, we show that it is possible to achieve polar order in a superlattice made up of two nonpolar oxides by means of oxygen vacancy ordering. Using scanning transmission electron microscopy imaging, we show the polar displacement of magnetic Fe ions in a superlattice of (LaFeO<SUB>3</SUB>)<SUB>2</SUB>/(SrFeO<SUB>3</SUB>) grown on a SrTiO<SUB>3</SUB> substrate. Using density functional theory calculations, we systematically study the effect of epitaxial strain, octahedral rotations, and surface terminations in the superlattice and find them to have a negligible effect on the antipolar displacements of the Fe ions lying in between SrO and LaO layers of the superlattice (i.e., within La<SUB>0.5</SUB>Sr<SUB>0.5</SUB>FeO<SUB>3</SUB> unit cells). The introduction of oxygen vacancies, on the other hand, triggers a polar displacement of the Fe ions. We confirm this important result using electron energy loss spectroscopy, which shows partial oxygen vacancy ordering in the region where polar displacements are observed and an absence of vacancy ordering outside of that area.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2014/nalefd.2014.14.issue-5/nl500601d/production/images/medium/nl-2014-00601d_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl500601d'>ACS Electronic Supporting Info</A></P>

Bifid Rib Jaw Cyst Basal Cell Nevus Syndrome: A Case Report

Anand, Ruchi M.,Mishra, Sunil S.,Degwekar, Shirish S.,Bhowate, Rahul R.,Motwani, Mukta B.,Rawlani, Shivlal M. Korean Academy of Dental Science 2011 Journal of korean dental science Vol.4 No.1

Gorlin-Goltz syndrome is an autosomal dominant disorder with a high degree of penetrance. It is characterized by basal cell carcinomas, odontogenic keratocysts, palmar and plantar pits and ectopic calcifications of falx cerebri. The presence of two major and one minor criteria or one major and three minor criteria are necessary to establish a diagnosis. Early diagnosis and treatment of Gorlin-Goltz syndrome, as well as family screening and genetic counseling are essential as it may be associated in 10% of patients with aggressive basal cell carcinoma and malignant neoplasias. We report here a patient with Gorlin-Goltz syndrome.

Bifid Rib Jaw Cyst Basal Cell Nevus Syndrome

Ruchi M. Anand,Sunil S. Mishra,Shirish S. Degwekar,Rahul R. Bhowate,Mukta B. Motwani,Shivlal M. Rawlani 대한치의학회 2011 Journal of korean dental science Vol.4 No.1

IMAGE ENCRYPTION USING NONLINEAR FEEDBACK SHIFT REGISTER AND MODIFIED RC4A ALGORITHM

GAFFAR, ABDUL,JOSHI, ANAND B.,KUMAR, DHANESH,MISHRA, VISHNU NARAYAN The Korean Society for Computational and Applied M 2021 Journal of applied mathematics & informatics Vol.39 No.5

In the proposed paper, a new algorithm based on Nonlinear Feedback Shift Register (NLFSR) and modified RC4A (Rivest Cipher 4A) cipher is introduced. NLFSR is used for image pixel scrambling while modified RC4A algorithm is used for pixel substitution. NLFSR used in this algorithm is of order 27 with maximum period 2^27-1 which was found using Field Programmable Gate Arrays (FPGA), a searching method. Modified RC4A algorithm is the modification of RC4A and is modified by introducing non-linear rotation operator in the Key Scheduling Algorithm (KSA) of RC4A cipher. Analysis of occlusion attack (up to 62.5% pixels), noise (salt and pepper, Poisson) attack and key sensitivity are performed to assess the concreteness of the proposed method. Also, some statistical and security analyses are evaluated on various images of different size to empirically assess the robustness of the proposed scheme.

Assessment of Genetic Variability in Two North Indian Buffalo Breeds Using Random Amplified Polymorphic DNA (RAPD) Markers

Sodhi, M.,Mukesh, M.,Anand, A.,Bhatia, S.,Mishra, B.P. Asian Australasian Association of Animal Productio 2006 Animal Bioscience Vol.19 No.9

Murrah and NiliRavi are the important North Indian buffalo breeds occupying the prominent position of being the highest milk producers. These breeds are more or less similar at morphological as well as physiological levels. The technique of RAPD-PCR was applied in the present study to identify a battery of suitable random primers to detect genetic polymorphism, elucidation of the genetic structure and rapid assessment of the differences in the genetic composition of these two breeds. A total of 50 random primers were screened in 24 animals each of Murrah and NiliRavi buffaloes to generate RAPD patterns. Of these, 26 (52%) primers amplified the buffalo genome generating 263 reproducible bands. The number of polymorphic bands for the 26 chosen RAPD primers varied from 3 (OPG 06 and B4) to 26 (OPJ 04) with an average of 10.1 bands per primer and size range of 0.2 to 3.2 kb. DNA was also pooled and analyzed to search for population specific markers. Two breed specific RAPD alleles were observed in each of Murrah (OPA02 and OPG16) and NiliRavi (OPG09) DNA pools. RAPD profiles revealed that 11 (4.2%) bands were common to all the 48 individuals of Murrah and NiliRavi buffaloes. Pair-wise band sharing calculated among the individual animals indicated considerable homogeneity of individuals within the breeds. Within breed, band sharing values were relatively greater than those of interbreed values. The low genetic distance (Nei's) value (0.109) estimated in this study is in accordance with the origin and geographical distribution of these breeds. The RAPD analysis indicated high level of genetic similarity between these two important North Indian buffalo breeds.