22 research outputs found

    Performance Analysis of Thermal Image Processing-Based Photovoltaic Fault Detection and PV Array Reconfiguration—A Detailed Experimentation

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    Due to the flexibility, sustainability, affordability, and ease of installation of solar photovoltaic systems, their use has significantly increased over the past two decades. The performance of a solar PV system can be constrained by a variety of external conditions, including hotspots, partial shade, and other minor faults. This causes the PV system to permanently fail and power losses. The power output in a partially shaded solar system is improved in this work by the introduction of a fault classifier based on thermal image analysis with a reconfiguration algorithm. For that purpose, the entire PV array is divided into two parts, with one of these being the male part and the other being the female part. MOSFET switches are used to build the switching matrix circuit that connects these parts. The Flir T420bx thermal camera captures thermal pictures, and MATLAB/Simulink® is used to extract the image properties. The pairing reconfiguration pattern is found using an algorithm based on image processing and the image attributes. The switching signals to the switching circuit are triggered by an Arduino controller. The image attributes of the thermal images may also be used to categorize PV system defects. This reconfiguration technique is easy, simple to use, and it can also be used to check the health of each PV module. The performance of the proposed work was validated using a 5 kW PV system with a 4 × 5 TCT array configuration at Sethu Institute of Technology’s renewable energy lab in India. The proposed method was simulated using the MATLAB-Simulink software program, and the outcomes were verified on different hardware setups.publishedVersio

    Generation and Characterization of an scFv Directed against Site II of Rabies Glycoprotein

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    Recombinant antibody phage display technology is a vital tool that facilitates identification of specific binding molecules to a target enabling the rapid generation and selection of high affinity, fully human, or mouse antibody product candidates essentially directed towards disease target appropriate for antibody therapy. In this study, a recombinant single-chain Fv antibody fragment (scFv) A11 was isolated from immune spleen cells obtained from mice immunized with inactivated rabies virus (Pasteur strain) using standard methodology and was characterized for its specificity towards the rabies virus glycoprotein. Epitope mapping using peptide libraries and truncated glycoprotein polypeptides suggested that A11 bound to the antigenic site II of rabies glycoprotein against which a majority of rabies virus neutralizing antibodies are directed. The use of the above technology could, therefore, allow development of scFvs with different specificities against the rabies glycoprotein as an alternative to the more cumbersome protocols used for the development of monoclonal antibodies

    Serološki odgovor goveda na cijepljenje polivalentnim cjepivom protiv slinavke i šapa, bjesnoće, hemoragijske septikemije i šuštavca.

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    Five groups of ten animals were vaccinated with a combined vaccine containing foot and mouth disease (FMD), rabies, Pasteurella multocida and Clostridium chauvoei antigens and individual component vaccines containing FMD, rabies, Pasteurella multocida and Clostridium chauvoei antigens, respectively. Serological response of the calves was assayed on days 21 and 90 post vaccination. There was no significant variation in the serological response elicited by individual component vaccines and combined vaccine containing all four antigens.Pet skupina po deset životinja cijepljeno je različitim kombinacijama vakcina. Prva je skupina cijepljena polivalentnim cjepivom koje je sadržavalo antigene virusa slinavke i šapa, virusa bjesnoće te bakterija Pasteurella multocida i Clostridium chauvoei. Ostale su skupine cijepljene pojedinačnim antigenima, pa je tako druga skupina cijepljena antigenima virusa slinavke i šapa, treća antigenima virusa bjesnoće, četvrta antigenima bakterije Pasteurella multocida, a peta antigenima bakterije Clostridium chauvoei. Serološki odgovor svih životinja provjeren je 21. i 90. dana nakon cijepljenja. Na osnovi serološkoga odgovora nisu utvrđene značajne razlike među različitim načinima cijepljenja

    Rabies Virus Infection in Domestic Buffaloes and Wild Animals in India

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    Rabies is one of the most significant diseases in India with severe health implication to humans, domestic and wild animals. In the present study, four concomitant incidents of rabies related deaths were recorded in the western province of India, Gujarat during 2012 - 2014. Brain samples were collected from two buffaloes, nilgai, and mongoose during these incidents and rabies virus was identified from these samples. Further genetic relationship of these isolates was determined and the rabies virus transmission among the wild and domestic mammals was established. Molecular epidemiology based on the glycoprotein ecto-domain and complete nucleoprotein gene showed that all the four isolates belonged to Arctic-like 1 lineage which is predominant in India. Phylogenetic analysis and time scaled evolutionary tree analysis indicated that the wild animals are playing an important role in the maintenance and also transmission of the rabies virus in India

    Immuno-affinity Purification of Insect Cell Expressed Rabies Virus Glycoprotein using a Conformational Specific Monoclonal Antibody

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    .Rabies is a disease of nervous system and causes progressive encephalitis with fatal outcome. The conformation-dependent epitopes on the glycoprotein (G) of rabies virus (RV) is responsible for the induction of virus neutralizing antibodies which is ultimately required to get complete protection from viral challenge. Therefore, a suitable chromatography technique is necessary to purify the tag free recombinant rabies virus glycoprotein (rRVG) without altering its immunogenic epitopes. The present study was undertaken to purify the rRVG using a conformational specific anti-rabies virus glycoprotein (RVG) mAb, M5B4, which binds to the natively folded G. The mAb had shown a significant kinetic interaction with RVG. The mAb immobilized onto the NHS-activated Sepharose 4 fast flow™ was used for the purification of rRVG by immuno-affinity chromatography (IAC). The bound rRVG was eluted in IAC using 0.1M glycine with pH 2.5 and the identity of the purified protein was confirmed by MALDI-TOF. The IAC purified rRVG induced neutralizing antibody response and 83% of the immunized mice were protected against intra-cerebral rabies virus challenge. The results indicate that the mAb based IAC method can be an effective purification technique for tag free rRVG with significant level of purity, without compromising the protein’s immunogenic potential

    A Brucella abortus S19 Glyco-conjugate Vaccine Consisting of Lipopolysaccharide and outer Membrane Protein Protects Mice against Challenge with Brucella abortus

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    A glyco-conjugate vaccine using the lipopolysaccharide (LPS) and the outer membrane protein (OMP) of Brucella abortus S19 strain was prepared. The vaccine was administered in mice subcutaneously (25 µg LPS per dose). Separate groups of mice were also vaccinated with LPS, OMP or live, attenuated S19 vaccine. Mice were challenged 30 days post vaccination with B. abortus 544 strain. The LPS, OMP and LPS-OMP glyco-conjugate vaccinated mice were protected against the challenge. The percentage of animals protected with the sub-unit vaccines and the glyco-conjugate vaccine were comparable with the live, attenuated vaccine. The glyco-conjugate vaccine was able to induce strong immune response against both the components. The prominent isotypes were IgG1, IgG2a and IgG3. In addition, the glyco-conjugate vaccine was able to induce a cell mediated immune response as indicated by the expression of IFN γ by splenocytes. The study indicated that the glyco-conjugate vaccine may be a useful candidate for prophylactic use

    Serološki odgovor goveda na cijepljenje polivalentnim cjepivom protiv slinavke i šapa, bjesnoće, hemoragijske septikemije i šuštavca.

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    Five groups of ten animals were vaccinated with a combined vaccine containing foot and mouth disease (FMD), rabies, Pasteurella multocida and Clostridium chauvoei antigens and individual component vaccines containing FMD, rabies, Pasteurella multocida and Clostridium chauvoei antigens, respectively. Serological response of the calves was assayed on days 21 and 90 post vaccination. There was no significant variation in the serological response elicited by individual component vaccines and combined vaccine containing all four antigens.Pet skupina po deset životinja cijepljeno je različitim kombinacijama vakcina. Prva je skupina cijepljena polivalentnim cjepivom koje je sadržavalo antigene virusa slinavke i šapa, virusa bjesnoće te bakterija Pasteurella multocida i Clostridium chauvoei. Ostale su skupine cijepljene pojedinačnim antigenima, pa je tako druga skupina cijepljena antigenima virusa slinavke i šapa, treća antigenima virusa bjesnoće, četvrta antigenima bakterije Pasteurella multocida, a peta antigenima bakterije Clostridium chauvoei. Serološki odgovor svih životinja provjeren je 21. i 90. dana nakon cijepljenja. Na osnovi serološkoga odgovora nisu utvrđene značajne razlike među različitim načinima cijepljenja

    A noval vaccine formulation consisting of DNA vaccine inactivated virus

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    Disclosed herein is a novel vaccine formulation for prophylactic or therapeutic immunization of vertebrates against infections caused by vertebrate viruses. The said vaccine contains a min. of two components, one of which is a deoxyribonucleotide (DNA) vaccine comprising of a DNA mol. that encodes a polypeptide of the virus and the other component consisting of inactivated form of the virus. This invention can also be used to develop low cost inactivated virus-based vaccines that contain much lower amt. of the said virus than that present in similar vaccines known in the prior art. The examples focus on the methods of producing a novel vaccine compn. against the rabies virus

    Molecular Characterization of Foot-and-Mouth Disease Virus Type C of Indian Origin

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    Comparison of nucleotide sequences of the partial 1D region of foot-and-mouth disease type C viruses of Indian origin with those of European, South American, and Southeast Asian viruses revealed that the Indian viruses form a distinct genotype. The vaccine strain C IND/51/79 belongs to this genotype and may be a prototype strain of this genotype
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