A new polyaniline (PANI) homopolymer and PANI/ZnO nanocomposite have been successfully synthesized in aqueous diethylene glycol solution medium via the chemical oxidative polymerization of aniline. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, FTIR spectra, UV–vis spectroscopy measurements were used to characterize the resulting PANI homopolymer and PANI/ZnO nanocomposite photocatalysts. The photocatalytic activities of PANI homopolymer and PANI/ZnO nanocomposites were investigated by the degradation of methylene blue (MB) and malachite green (MG) dyes in aqueous medium under natural sunlight and UV light irradiation and the efficiency of the catalysts have been discussed in detail. Results indicate that the addition of the ZnO nanoparticles to the PANI homopolymer enhance the photocatalytic efficiency under natural sunlight irradiation and a little amount of PANI/ZnO nanocomposite photocatalyst (0.4 g/L) degrades both of the dye solutions (MB or MG) with 99% efficiency after 5 h of irradiation under natural sunlight.

Preparation of the new polyaniline/ZnO nanocomposite and its photocatalytic activity for degradation of methylene blue and malachite green dyes under UV and natural sun lights irradiations

https://cyberleninka.org/article/n/1272461.pdf

Synthesis and characterization of conducting polyaniline nanocomposites containing ZnO nanorods

Epoxy/polyaniline–ZnO nanorods hybrid nanocomposite coatings: Synthesis, characterization and corrosion protection performance of conducting paints

Low temperature dielectric studies of zinc oxide (ZnO) nanoparticles prepared by precipitation method

Extraction of nanocellulose and in-situ casting of ZnO/cellulose nanocomposite with enhanced photocatalytic and antibacterial activity.

Synthesis and characterization of polyaniline–ZnO composite and its dielectric behavior

Dielectric properties of nano ZnO-polyaniline composite in the microwave frequency range

Dielectric behavior of polyaniline–CNTs composite in microwave region

Wood is a hygroscopic material that shrinks and swells to different extents in three anatomical directions. The dimensional changes that accompany the shrinking and swelling of wood are major sources problems in the structural utilization of wood. Therefore, the present investigation was carried out to test the potentials of Lantana camara L. methanol leaf extract for the dimensional stability of wood samples of some lesser known wood species viz. Pinus roxburghii Sargent, Celtis austral L., and Bombax ceiba L. of size 5cm x 2.5cm x 2.5cm (longitudinal x radial x tangential) treated at different concentrations viz. 0.25%, 0.5%, 1%, 1.5% and 2.0%. These samples were analysed for swelling and shrinkage in three different planes viz. longitudinal, radial and tangential and the results revealed highest swelling and shrinkage in tangential plane followed by radial plane and longitudinal plane. Pinus roxburghii Sargent wood samples were recorded with the highest swelling and shrinkage in all the three planes. Among the treatments, 1.5% was observed with maximum swelling and 2% concentration with minimum shrinkage. The treated samples exhibited good dimensional stability as compared to untreated samples. Thus, the plant extract offers a great potential in improving the dimensional stability of wood without adversely affecting the environment.

https://www.phytojournal.com/archives/2017/vol6issue4/PartD/6-3-113-388.pdf

Potentials of Lantana Camara L. leaf extract treatment for the dimensional stability of some lesser known wood species

Introduction: Suppurative lymphadenitis is most commonly unilateral in presentation. It is caused due to transportation of invading microorganisms (initially penetrating from mucosa or skin of the head or neck most commonly) to afferent lymph nodes. The most common bacterial causes of suppurative lymphadenitis are Staphylococcus aureus and Streptococcus pyogenes, accounting for between 40% and 89% of cases.AIM: To study the cytomorphological features in fine needle aspiration smears from patients suspected of having suppurative lymphadenitis and to study the differentials of suppurative lymphadenitis by FNAC and their evaluation by Z.N. staining, CB-NAAT, fluorescent microscopy, fungal and bacterial cultures so as to know the exact cause of suppurative lymphadenitis.Material and Methods: The present study was conducted in 50 patients of clinically suspected cases of suppurative lymphadenitis. Fine needle aspirations were performed and smears from the aspirates were processed for routine cytology (H&E, MGG) N, the conventional ZN method, fluorescent method, CBNAAT, bacterial and fungal culture for evaluation.Results: Z.N. positivity was seen in 34.14% while with fluorescent stain positivity was increased up to 60.97% and was increased up to 78.05% with CB-NAAT. Fluorescent stain positivity was seen in 60.97% while with CB-NAAT positivity was increased to 78.05%. Out of 9 cases of with bacterial etiology, only 5 cases were positive on bacterial culture. 3 cases showed MRSA and two cases showed Streptococcus pyogenes. No case of fungal lymphadenitis was identified in our study as all the cases were negative on PAS staining and fungal culture. Conclusion: Though cytomorphological appearance and Z.N. staining are commonly used in developing countries as they are economical and convenient alternative to open biopsy of lymph nodes but fluorescent method proves to be more sensitive technique than the Z.N. CB-NAAT proves to be more sensitive than both Z.N. and fluorescent staining for those patients which show cytomorphological appearance of TB. Patients with high risk of tuberculosis in whom AFB smear examination is usually negative are most likely to be benefited from CB-NAAT. Hence for the differentials of suppurative lymphadenitis cytomorphological examination along with various other ancillary techniques (methods) has more diagnostic value.

/pdf/to-study-the-differentials-of-suppurative-lymphadenitis-by-usy3s9czjq.pdf

To study the differentials of suppurative lymphadenitis by FNAC and their evaluation by Z.N. staining, CB-NAAT, fluorescent microscopy, fungal and bacterial cultures

Heena Gupta

Papers

Synthesis and characterization of polyaniline–ZnO composite and its dielectric behavior

Dielectric properties of nano ZnO-polyaniline composite in the microwave frequency range

Dielectric behavior of polyaniline–CNTs composite in microwave region

Potentials of Lantana Camara L. leaf extract treatment for the dimensional stability of some lesser known wood species

To study the differentials of suppurative lymphadenitis by FNAC and their evaluation by Z.N. staining, CB-NAAT, fluorescent microscopy, fungal and bacterial cultures