Effect of Thermal and Microwave Treatment on Low Temperature Mechanical Property of Glass Fiber Reinforced Polymer Composite: An Experimental Exploration

There has been a tremendous advancement in the science and technology of fiber reinforced polymer composites (FRP) in recent times. The low density, high strength, high stiffness to weight ratio, excellent durability, and design flexibility of fiber reinforced polymers are the primary reasons for their use in many structural components in the aircrafts, automotive, marine, transportation, sports, medical science and more recently the building and construction industries and particularly in areas that are weight and corrosion sensitive. A recent example is the Bridge-in-a-Backpack for 2014 Winter Olympics in Russia, an innovative inflatable composite-concrete arch bridge, which was developed to reduce construction time and costs, increase lifespan, reduce maintenance costs and reduce the carbon footprint of bridge construction1. But the phenomenon of the occurrence of their fracture and failure at low temperatures and under varying loading rates is a quite complex, and is not easily understandable phenomenon, because of the various types of the failure modes involved (e.g. delamination sites, debonding, fiber pullout regions, crack propagation front, striations and bubble bursting in the matrix). Thus a critical study has to be made to understand the overall phenomenon. Recently an active area of investigation related to this work is being explored by Temperature Modulated Differential Scanning Calorimetry (TMDSC) and Fourier Transform Infrared Spectroscopy (FTIR-Imaging), techniques to find out the possible causes for failure of the composite. In the present study, an attempt has been made for fractographic study of the composite material using SEM micrographs of the fractured surfaces of composites under Thermally Conditioned and post curing by Microwave treatment, followed by their exposure in ultralow temperatures, so that the origin of the crack could be analyzed and the factors affecting the locus of initiation of fracture could be determined. This would be followed by FTIR-Imaging and TMDSC to determine the alternation and deviation of Stoichiometry and the Tg values respectively, to have a better idea about the failure phenomenon

Steganography with BSS-RSA-LSB technique: A new approach to Steganography.

Security of information plays a vital role in data transmission. For this purpose steganography and cryptography is plays a major role. Steganography embed a text into cover image and cryptography convert plain text into the cipher text vice versa. There are many algorithms that has been proposed for steganography and cryptography for safe transmission of the data. But intruder sometimes identify the secret message from the stegano image. In the proposed system we apply BSS technique on secret message after to convert the cipher text using RSA algorithm. The cipher text is embedded into cover image using LSB technique, it generates stegano image

Synthesis, Characterization, DNA binding and Microbial Activity of Cobalt (III) Complexes of Mixed Ligands, Hydroxamic Acid and 1,10-Phenanthroline

New Co(III) complexes of mixed ligands, hydroxamic acid (L1 = AHA (acetohydroxamic acid), L2 = BHA (benzohydroxamic acid) and L3 = OHA (oxalohydroxamic acid) and 1, 10-phenanthroline (phen) were synthesized and characterized by NMR, IR, UV-visible, mass spectrometer, and elemental analysis. In the complexes, [Co(phen)2L]ClO4 (L = L1, L2, L3), the metal ion is coordinated by six atoms, two oxygen atoms from hydroxamic acid and 4N atoms from co-ligand 1, 10-phenanthroline to form octahedral Co(III) complexes. The interaction of these complexes with calf thymus DNA (CT-DNA) has been investigated by absorption spectroscopy measurement. The DNA-binding constants for complexes 1, 2, 3 are 2.47 x 106 M-1, 4.02 x 106 M-1, 2.23 x 106 M-1 respectively. Detailed analysis shows that these complexes bind with DNA through interaction binding. And the study of microbial activity against Gram positive and Gram negative bacteria. Keywords: DNA binding, hydroxamic acid, cobalt complexes, 1, 10-phenanthroline, microbial activity

Analysing acculturation to sustainable food consumption behaviour in the social media through the lens of information diffusion

Drawing on theories of acculturation and information diffusion, this paper examines whether social media usage, intergroup contacts and information dissemination influence the cultural adaptation of three ethnic groups, and its implications on sustainable consumption behaviour. Twenty-four semi-structured interviews containing multiple dimensions of social media uses, acculturation, food consumption behaviour, and information diffusion were administered to a sample of Indians (living in the home country), British Indians (living in the host country for more than 10 years) and White British (natives of Britain) users of social media. Our findings suggest that there is a clear link between the integrated strategy of acculturation and information diffusion on social media, which influences acculturation to sustainable food consumption behaviour among social media users. Managerial implications of this research finding are that intervention in information diffusion aids acculturation through the social media, which serves to infuse social media and sustainability strategist with knowledge to best influence the consumers in developing sustainable food consumption behaviour. This research also identifies opportunities to expand this academic research and contribute further to the theories of remote acculturation on which limited research has been done

Influence of Biofield Treatment on Physicochemical Properties of Hydroxyethyl Cellulose and Hydroxypropyl Cellulose

International audienceCellulose based polymers have shown tremendous potential as drug delivery carrier for oral drug delivery system (DDS). Hydroxyethyl cellulose (HEC) and hydroxypropyl cellulose (HPC) are widely explored as excipients to improve the solubility of poorly water soluble drugs and to improve self-life of dosage form. This work is an attempt to modulate the physicochemical properties of these cellulose derivatives using biofield treatment. The treated HEC and HPC polymer were characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The XRD studies revealed a semi-crystalline nature of both the polymers. Crystallite size was computed using Scherrer’s formula, and treated HEC polymer showed a significant increase in percentage crystallite size (835%) as compared to the control polymer. This higher increase in crystallite size might be associated with greater crystallite indices causing a reduction in amorphous regions in the polymer. However treated HPC polymer showed decrease in crystallite size by -64.05% as compared to control HPC. DSC analysis on HEC polymer revealed the presence of glass transition temperature in control and treated HEC polymer. We observed an increase in glass transition temperature in treated HEC, which might be associated with restricted segmental motion induced by biofield. Nonetheless, HPC has not showed any glass transition. And no change in melting temperature peak was observed in treated HPC (T2) however melting temperature was decreased in T1 as compared to control HPC. TGA analysis established the higher thermal stability of treated HEC and HPC. CHNSO results showed significant increase in percentage oxygen and hydrogen in HEC and HPC polymers as compared to control samples. This confirmed that biofield had induced changes in chemical nature and elemental composition of the treated polymers (HEC and HPC)

SYNTHESIS, MOLECULAR MODELING, AND QUANTITATIVE STRUCTURE–ACTIVITY RELATIONSHIP STUDIES OF UNDEC-10-ENEHYDRAZIDE DERIVATIVES AS ANTIMICROBIAL AGENTS

Objective: In recent years, an increasing frequency and severity of antimicrobial resistance to different antimicrobial agents, demands new remedies for the treatment of infections. Therefore, in this study, a series of undec-10-enehydrazide derivatives were synthesized and screened for in vitro activity against selected pathogenic microbial strains.Methods: The synthesis of the intermediate and target compounds was performed by standard procedure. Synthesized compounds were screened for antimicrobial activity by tube dilution method. Molecular docking study of synthesized derivatives was also performed to find out their interaction with the target site of β-ketoacyl-acyl carrier protein synthase III, (FabH; pdb id:3IL7) by docking technique. Quantitative structure–activity relationship (QSAR) studies were also performed to correlate antimicrobial activity with structural properties of synthesized molecules.Results: Antimicrobial screening results showed that compound 8 having benzylidine moiety with methoxy groups at meta and para position and compound 16 having 3-chloro-2-(3-flourophenyl)-4-oxoazetidine moiety was found to be most potent. QSAR studies revealed the importance of Randic topology parameter (R) in describing the antimicrobial activity of synthesized derivatives. Molecular docking study indicated hydrophobic interaction of deeply inserted aliphatic side chain of the ligand with FabH. The N-atoms of hydrazide moiety interacts with Ala246 and Asn247 through H-bonding. The m- and p-methoxy groups form H-bond with water and side chain of Arg36, respectively.Conclusion: Compound 8 having benzylidine moiety with methoxy groups at meta and para position and compound 16 having 3-chloro-2-(3- flourophenyl)-4-oxoazetidine moiety was found to most potent antibacterial and antifungal compounds, respectively

Physical, Spectroscopic and Thermal Characterization of Biofield treated Myristic acid

Myristic acid has been extensively used for fabrication of phase change materials for thermal energy storage applications. The objective of present research was to investigate the influence of biofield treatment on physical and thermal properties of myristic acid. The study was performed in two groups (control and treated). The control group remained as untreated, and biofield treatment was given to treated group. The control and treated myristic acid were characterized by X-ray diffraction (XRD), Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR) spectroscopy, and Laser particle size analyzer. XRD results revealed alteration in intensity of peaks as well as significant increase in crystallite size (27.07%) of treated myristic acid with respect to control. DSC study showed increase in melting temperature of treated myristic acid as compared to control. Nevertheless, significant change (10.16%) in latent heat of fusion (∆H) was observed in treated myristic acid with respect to control. TGA analysis of treated myristic acid showed less weight loss (31.33%) as compared to control sample (60.49%). This may be due to increase in thermal stability of treated myristic acid in comparison with control. FT-IR results showed increase in frequency of –CH2 and C=O stretching vibrations, probably associated with enhanced bond strength and force constant of the respective bonds. The particle size analyzer showed significant decrease in average particle size (d50 and d99) of treated myristic acid with respect to control. Overall, the results showed significant alteration in physical, spectroscopic and thermal properties of myristic acid. The enhanced crystallite size, and thermal stability of treated myristic acid showed that treated myristic acid could be used as phase change material for thermal energy storage applications. This record was migrated from the OpenDepot repository service in June, 2017 before shutting down

Characterization of Physical, Spectral and Thermal Properties of Biofield Treated 1,2,4-Triazole

Triazoles are an important class of compounds used as core molecule for the synthesis of many pharmaceutical drugs. The objective of the present research was to investigate the influence of biofield treatment on physical, spectral and thermal properties of 1,2,4-triazole. The study was performed in two groups, control and treatment. The control group remained as untreated, and biofield treatment was given to treatment group. The control and treated 1,2,4-triazole were characterized by X-ray diffraction (XRD), Differential Scanning Calorimetry (DSC), Thermo Gravimetric analysis (TGA), Surface area analyzer, and Fourier transform infrared (FT-IR) spectroscopy. XRD analysis revealed a decrease in unit cell volume of treated 1,2,4-triazole (662.08 10-24 cm3) as compared to control sample (666.34 10-24 cm3). Similarly, a decrease in molecular weight of treated 1,2,4-triazole (69.78 g/mol) with respect to control (70.23 g/mol) was observed. Additionally, a substantial decrease in crystallite size (G) was observed in treated 1,2,4-triazole by 16.34% with respect to control. DSC analysis showed a slight increase in melting temperature of treated 1,2,4-triazole (124.22°C) as compared to control (123.76°C). Moreover, a significant increase in latent heat of fusion was noticed in treated 1,2,4-triazole by 21.16% as compared to control sample. TGA analysis showed a significant increase in maximum thermal decomposition temperature (Tmax) of treated 1,2,4-triazole (213.40°C) as compared to control (199.68°C). Surface area analysis using BET showed a substantial increase in surface area of the treated compound by 13.52% with respect to control. However, FT-IR analysis showed no structural changes in treated 1,2,4-triazole with respect to control. Overall, the result showed significant alteration of physical and thermal properties of the treated 1,2,4-triazole with respect to control. Source: https://www.trivedieffect.com/science/characterization-of-physical-spectral-and-thermal-properties-of-biofield-treated-124-triazole https://www.omicsonline.org/open-access/characterization-of-physical-spectral-and-thermal-properties-of-biofieldtreated-124triazole-2329-9053-1000128.php?aid=5908