Abstract: The present invention relates to an acoustic energy reflector comprising a microcellular rubber as inner liner and a fiber reinforced composite as outer casing, in a core-shell assembly, wherein the said microcellular rubber is selected from the group of natural and synthetic rubbers having glass transition temperature below 0° C. and the resin for the fiber reinforced composite is selected from a group having a glass transition temperature at least 50° C.

Abstract: A single-source solid precursor matrix for semiconductor nanocrystals includes 45-55% by weight of zinc, 28-35% by weight of oxygen, 0.70-1.2% by weight of carbon, 1.5-2.5% by weight of hydrogen, 4-6% by weight of nitrogen, 5-7% by weight of sulphur and 1-5% by weight of dopant ions with respect to the weight of zinc atoms. Doped semiconductor nanocrystals for multicolor displays and bio markers include 60-65% by weight of zinc, 30-32% by weight of sulphur, 1.2-1.3% by weight of copper and 1.2-1.3% by weight of dopant ions.

Abstract: The invention provides a method for the preparation of fentanyl comprising: (a) reacting 4-piperidone hydrochloride monohydrate with aniline in presence of reducing environment to produce 4-anilinopiperidine (4-AP), (b) reacting the 4-AP as obtained from step (a) with phenethyl halide under reflux conditions in highly alkaline medium to give 4-anilino-N-phenethylpiperidine, and (c) converting the 4-anilino-N-phenethylpiperidine to fentanyl by reacting with propionyl chloride in presence of halogenated hydrocarbons, then isolating fentanyl by solvent extraction and purifying by crystallization from petroleum ether at a temperature ranging from 60-80° C.

Abstract: The present invention relates to polymer composite materials, more particularly relates to composite materials with tailor made surface electrical resistivities in the range of 109 to 10?1 ?/sq. and process of making the same. The process for preparing Fibre Reinforced Polymeric (FRP) Composite, said process comprising acts of homogeneously mixing 1-30% by weight of different electrically conducting fillers in matrix resin system to obtain resin mix; wetting dry preforms using the resin mix; compacting the wetted preforms to obtain green composite; curing the green composite; and post-curing the cured composite to prepare the FRP Composite.

Abstract: A process for preparing a single source solid precursor matrix for semiconductor nanocrystals having the steps of: mixing 0.1-1 Molar of an aqueous/non-aqueous (organic) solution containing the first component of the host matrix with 0.001-0.01 Molar of an aqueous/non-aqueous solution containing the first dopant ions, which needs in situ modification of valency state, dissolving 10-20 milligram of an inorganic salt for the in situ reduction of the first dopant ion in the solution, addition of 0.001-0.01 Molar of an aqueous/non-aqueous solution of an inorganic salt containing the dopant ions which do not need modifications of their valency state, addition of 0.1-1 Molar of an aqueous/non-aqueous solution of an inorganic salt containing the second component of the host material, addition of 5-10% by weight of an aqueous solution containing a pH modifying complexing agent, to obtain a mixture, and heating the mixture to obtain a solid layered micro-structural precursor compound.

Abstract: The present invention relates to a novel bioactive water fraction obtained from the leaves of an herb named Gomphostema niveum commonly found in North Eastern part of India, and which is useful for inhibiting the growth of malarial parasite Plasmodium falciparum. The present invention also relates to a method for the extraction of said bioactive fraction. The present invention also provides methods for treatment of malaria using such bioactive water fractions and use of such bioactive water fractions for the treatment of malaria.

Abstract: A rapid, sensitive and cost effective process of detection of swine flu virus H1 type in a sample is provided herein. The present invention further provides highly specific oligonucleotides useful for rapid detection of swine flu virus in a sample. Swine flu virus specific isothermal gene amplification assay disclosed in the present invention is highly specific and sensitive and is useful for early clinical diagnosis of H1N1 human patients. The oligonucleotides disclosed in the present invention provide amplification of the target gene in highly sensitive and specific manner showing no cross amplification.

Abstract: A typhoid vaccine using heat shock protein (Hsp) of Salmonella typhi and a method for the manufacture thereof. A composition comprising an effective amount of a complex of a Hsp, in part or whole, either alone or covalently or non-covalently bound to an antigenic molecule, which when administered to a mammal elicits specific immunological responses in the host. The antigenic molecule refers to the exogenous antigens/immunogens such as viz LPS, peptide, nucleic acid or polysaccharide or antigenic/immunogenic fragments and derivatives thereof.

Abstract: The present invention provides an antimalarial compound 3-[2-(2-Hydroxymethyl-1,4a,5-trimethyl-7-oxo-1,2,3,4,4a,7 8,8a-octahydronaphthalen-1-yl)-ethyl]-5H-furan-2-one of the formula 1 given below or pharmaceutically acceptable derivatives thereof, isolated from Gomphostema niveum and also provides a method for the extraction thereof as well as methods for the treatment of malaria using said compound.

Abstract: The present invention relates to an acoustic energy reflector comprising a microcellular rubber as inner liner and a fiber reinforced composite as outer casing, in a core-shell assembly, wherein the said microcellular rubber is selected from the group of natural and synthetic rubbers having glass transition temperature below 0° C. and the resin for the fiber reinforced composite is selected from a group having a glass transition temperature at least 50° C.

Abstract: An improved process for the preparation of 2-chlorobenzylidenemalononitrile (CS) comprising of the steps of: preparing malononitrile suspension by adding 5-20% (wt %) preferably 12-14% malononitrile to water while constantly stirring and then adding 0.05-0.5% (v/v) preferably 0.1-0% of a catalyst like piperidine, pyridine, 2-picoline, 3-picoline, 4-picoline or morpholine preferably piperidine piperidine with constant stirring at 20-30° C.; condensing the malononitrile suspension prepared in step (a) with 2-chlorobenzaldehyde by adding 10-15% (w/v) preferably 25-30%, of 2-chlorobenzaldehyde cover a period at 30-45 minutes so that the temperature of the reaction mixture remains below 50° C., constantly stirring for 20-40 minutes, then filtering the CS and drying it at 20-30° C. under water vacuum for 3-5 hrs.

Abstract: A method of elliptic curve encryption includes, (a) selecting an elliptic curve Ep (a,b) of the form y2=x3+ax+b mod (p) wherein a and b are non-negative integers less than p satisfying the formula 4 a3+27b2 mod (p) not equal to 0; (b) generating a large 160 bit random number by a method of concatenation of a number of smaller random numbers; (c) generating a well hidden point G (x,y) on the elliptic curve Ep (a,b) by scalar multiplication of a point B (x,y) on the elliptic curve with a large random integer which further includes the steps: (i) converting the large random integer into a series of powers of 231; (ii) converting each coefficient of 231 obtained from above step into a binary series; (iii) multiplication of binary series obtained from steps (i) and (ii) above with the point B (x,y) on the elliptic curve; (d) generating a private key nA (of about >=160 bit length); (e) generating a public key PA (x,y) given by the formula PA (x,y)=(nA?G (x,y)) mod (p); (f) encrypting the input message MSG; (g) d

Abstract: A process for the preparation of n-heneicosane is disclosed. The process comprises (a) reacting 2,4-alkaneanedione with 1-bromooctadecane in absolute ethanol in the presence of 18-crown-6 as catalyst to produce 2-heneicosanone; and (b) reducing said 2-heneicosanone using hydrazine hydrate and potassium hydroxide in ethylene glycol to obtain n-heneicosane.

Abstract: A process for preparing a single source solid precursor matrix for semiconductor nanocrystals having the steps of: mixing 0.1-1 Molar of an aqueous/non-aqueous (organic) solution containing the first component of the host matrix with 0.001-0.01 Molar of an aqueous/non-aqueous solution containing the first dopant ions, which needs in situ modification of valency state, dissolving 10-20 milligram of an inorganic salt for the in situ reduction of the first dopant ion in the solution, addition of 0.001-0.01 Molar of an aqueous/non-aqueous solution of an inorganic salt containing the dopant ions which do not need modifications of their valency state, addition of 0.1-1 Molar of an aqueous/non-aqueous solution of an inorganic salt containing the second component of the host material, addition of 5-10% by weight of an aqueous solution containing a pH modifying complexing agent, to obtain a mixture, and heating the mixture to obtain a solid layered micro-structural precursor compound.

Abstract: A process for the complete destruction of gelled sulphur mustard (SM), comprising the steps of: (a) dissolving gelled sulphur mustard (SM) in organic solvent such as 2-chloroethanol, methanol, methyl cellosolve or mixtures of these to obtain a clear mixture, (b) incinerating the clear gelled sulphur mustard solvent mixture obtained from step (a); (c) dissolving residual gelled SM obtained from step (c) into non-toxic products; (d) chemically converting dissolved SM obtained from step (c) into non-toxic products.

Abstract: A method of elliptic curve encryption includes, (a) selecting an elliptic curve Ep (a,b) of the form y2=x3+ax+b mod (p) wherein a and b are non-negative integers less than p satisfying the formula 4 a3+27b2 mod (p) not equal to 0; (b) generating a large 160 bit random number by a method of concatenation of a number of smaller random numbers; (c) generating a well hidden point G (x,y) on the elliptic curve Ep (a,b) by scalar multiplication of a point B (x,y) on the elliptic curve with a large random integer which further includes the steps: (i) converting the large random integer into a series of powers of 231; (ii) converting each coefficient of 231 obtained from above step into a binary series; (iii) multiplication of binary series obtained from steps (i) and (ii) above with the point B (x,y) on the elliptic curve; (d) generating a private key nA (of about >=160 bit length); (e) generating a public key PA (x,y) given by the formula PA (x,y)=(nA-G (x,y)) mod (p); (f) encrypting the input message MSG; (g) d

Abstract: The present invention relates to a magnetorheological fluid composition and a process for preparing the same, which has excellent magnetorheological properties. The fluid composition exhibits change in rheological characteristics in the presence of an external magnetic field. Further, the magnetorheological characteristics of the fluid composition can be optimised for the improved magnetic sensitivity to external magnetic field and negligible magnetic retentivity after removal of the external magnetic field. The sensitivity of the fluid to external magnetic field can be varied by varying the pure iron content of the magnetic sensitive particles composition while, the magnetic retentivity of the fluid (after removal of external magnetic field) can be varied by varying the ferrite alloy content of the same. The fluid composition utilises a magnetic sensitive particles stabiliser or surfactant, which is synthesised from the carrier fluid used in the fluid composition.

Abstract: The present invention relates to a magneto sensitive fluid composition and a process of its preparation. The electrical conductivity of the composition varies reversibly in the presence of an external magnetic field. The composition, which is practically an insulator, starts behaving as a conductor in the presence of a magnetic field. The fluid is basically a magnetrheological composition in which the magnetic sensitive particles are admixed with conductive additives in the form of conductive metallic or non-metallic powder. The change in electrical conductivity of the composition is in addition to the change in rheological characteristics of the composition in the presence of an external magnetic field.

Abstract: A titanium-based intermetallic alloy having a high yield stress, a high creep resistance and sufficient ductility at ambient temperature has the following chemical composition as measured in atomic percentages:Al, from 16 to 26; Nb, from 18 to 28; Mo, from 0 to 2; Si, from 0 to 0.8; Ta, from 0 to 2; Zr, from 0 to 2; and Ti as the balance to 100; with the condition that Mo+Si+Zr+Ta>0.4%.Production, working and heat-treatment ranges adapted to the intended use of the material are also defined.