Implicative Filters In Quasi Ordered RL-Wajsberg Algebras

This article introduces the idea of implicative filters in quasi ordered RL-Wajsberg algebras and uses examples to explore some of its features.Comment:

MULTI_LEVEL SECURE FROM WEB INTRUSION AND QUERY ATTACKS ON WEB DATABASE

Most data frameworks and business applications assembled these days have a web frontend and they should be generally accessible to customers, representatives and accomplices around the globe, as the computerized economy is turning out to be increasingly pervasive in the worldwide economy. Strategy and a model instrument to assess web application security components. In this paper, we along these lines propose to make trusted equipment a top notch national in the safe information administration field. Additionally, we trust that cost-driven bits of knowledge and compositional standards will generally change the way frameworks and calculations are planned. We present an outsourced database model that permits customers to execute SQL questions with security and under administrative consistence imperatives by utilizing server-facilitated, sealed trusted equipment in basic inquiry preparing stages, along these lines expelling any confinements on the kind of bolstered inquiries

Magnetic and Transport Properties of Ternary Indides of type R2CoIn8 (R = Ce, Pr and Dy)

We have synthesized and investigated the magnetic and transport properties of a series of compounds, R2CoIn8 (R = rare earth). Compounds form in single phase with a tetragonal structure (space group P4/mmm, no. 162). The Ce compound shows heavy fermion behavior. The magnetic susceptibility of Pr2CoIn8 shows a marked deviation from the Curie-Weiss behavior at low temperatures, which is attributed to the crystalline electric field effects. Heat capacity and magnetization measurements show that Dy2CoIn8 undergoes a magnetic transition at 17 K and a second transition near 5 K, the latter of which may be due to spin reorientation. Magnetization of this compound shows two metamagnetic transitions approximately at 3.6 T and 8.3 T.Comment: Total 7 pages of text and figure

Magnetocaloric effect in R2Ti3Ge4 (R = Gd, Tb and Er) Compounds

Heat capacity of polycrystalline R2Ti3Ge4 (R = Gd, Tb and Er) compounds (Orthorhombic, Sm5Ge4-type, Space group Pnma) has been studied in the temperature range of 1.8 K to 300 K in various applied magnetic fields. The compounds with magnetic lanthanide elements show interesting low field magnetism intrigued by possible presence of competing antiferromagnetic and ferromagnetic interactions. The magnetocaloric effect in these compounds is estimated from the field dependent heat capacity data. The magnetic entropy change and the adiabatic temperature change in the vicinity of the magnetic transition are found to be significant.Comment: 12 pages incl 3 figures, submitted to Journal of Applied Physic

To study the association of antiphospholipid syndrome in patients with bad obstetric history

Background: Antiphospholipid syndrome is an autoimmune condition characterized by vascular thrombosis and /or pregnancy morbidity in the presence of antiphospholipid antibodies. A failure or significant delay in recognizing APS as the underlying disease entity may leave to the loss of an opportunity to prevent serious consequences of the disease and the associated pregnancy complications. Aim of the study was to study the association of Antiphospholipid Syndrome (APS) in patients with bad obstetric history (BOH).Methods: Patients registered in Obstetrics and Gynecology Department SAT Hospital, Medical College, Trivandrum, Kerala with bad obstetric history (BOH) meeting the inclusion and exclusion criteria were recruited for the study. They were followed up in the postnatal ward after abortion and preterm delivery as per protocol for bad obstetrics outcome evaluation. They were offered lab test in standard labs for APL Syndrome especially LAC and anti-cardiolipin antibodies IgM and IgG. Those tested positive were retested 12 weeks later also to confirm the test. Then the various adverse pregnancy outcomes were studied in both APLA positive and negative groups.Results: The association of APLA with bad obstetric history (BOH) in the present study are as follows- Late miscarriages-16%, miscarriages less than 10 weeks-12%, Preterm- 10.8%, unexplained death-14%, Severe Pre-eclampsia-12.3%, IUGR-11.8%, Abruption-11.1% of which late miscarriages more than10 weeks was the commonest association.Conclusions: The study shows that women with bad obstetric history (BOH) and those cases where miscarriage occurred after the appearance of foetal cardiac activity should be investigated for APLA in the preconceptional period itself in the next pregnancy earlier and if positive should be given prophylaxis for the same to prevent a miscarriage in future pregnancy

Large magnetoresistance in intermetallic compounds R2Mn3Si5 (R = Tb, Dy and Ho)

Magnetization (M) and magnetoresistance (MR) measurements on polycrystalline R2Mn3Si5 (R = Tb, Dy and Ho) compounds (tetragonal, space group P4/mnc) have been carried out in the temperature range of 2 K-300 K, in various applied fields. Both, the rare earth and the Mn, are found to carry magnetic moments in these compounds. Mn has two sub-lattices (Mn1 and Mn2) that order magnetically at two different temperatures. Rare earth and Mn1 moments order ferromagnetically at TC1 whereas Mn2 is found to magnetically order at TC2 (TC1 = 89 K, 86 K, 78 K and TC2 = 18 K, 34 K, 16 K for R = Tb, Dy and Ho compounds, respectively). Magnetoresistance measurements reveal large negative MR values of about 50 % near TC2 at 9 T in all these compounds. This giant magnetoresistance is attributed to the spin-dependent scattering effects, competing exchange interactions and the layered structure of these compoundsComment: Submitted to Europhys. Let

Methyl 3-(4-chloro­phen­yl)-1-methyl-1,2,3,3a,4,11c-hexa­hydro­benzo[f]chromeno[4,3-b]pyrrole-3a-carboxyl­ate

In the title compound, C24H22ClNO3, the dihedral angle between the naphthalene ring system and the chloro­phenyl ring is 67.44 (4)°. The pyrrolidine and dihydro­pyran rings exhibit envelope and half chair conformations, respectively. In the crystal structure, weak C—H⋯π inter­actions are observed

Electrical and Magnetotransport Properties of Canted Antiferromagnet Dy₅Si₂Ge₂

Summary form only given. Since the giant magnetocaloric effect is encountered in a ferromagnetic Gd5Si2Ge2 alloy near room temperature it is considered as a suitable material for magnetic refrigerator applications. Also a commensurate structural transition occurs at the magnetic transition temperature and there is a good correlation between the crystal structure and magnetic properties. Such observations have triggered numerous experimental studies on similar rare earth alloys and compounds. We have synthesized its Dy- analogue, namely, Dy5Si2Ge2 and have characterized it by means of room temperature X-ray diffraction, ac magnetic susceptibility (15 K - 300 K), electrical resistivity (at zero field and at 6 T), thermoelectric power (15 K - 300 K) and neutron diffraction (at 300 K and 9.2 K) experiments

Magnetic Ordering in the Rare Earth Intermetallic Compound Tb₂Ti₃Ge₄: Magnetization and Neutron Diffraction Studies

Magnetization and neutron diffraction studies on a polycrystalline Tb2Ti3Ge4 sample (orthorhombic Sm5Ge4-type structure, space group Pnma, No. 62) have been carried out. This compound is found to order antiferromagnetically at ~18 K (TN). The magnetization (M) versus field (H) isotherms obtained at 2, 3, 5, and 10 K indicate a field-induced antiferromagnetic to ferromagnetic transition in fields of the order of 0.5 T. The saturation magnetization value at 2.5 K (M extrapolated to 1/H--\u3e0) is only ~5.6µB/Tb3+, suggesting the possible presence of crystal field effects with or without a persisting antiferromagnetic component. Neutron powder diffraction data at 10 K confirm the existence of a magnetic long range order. Modeling of the magnetic scattering reveals a complex and incommensurate antiferromagnetic spin structure below TN