Mass-Transport Models with Fragmentation and Aggregation

We present a review of nonequilibrium phase transitions in mass-transport models with kinetic processes like fragmentation, diffusion, aggregation, etc. These models have been used extensively to study a wide range of physical problems. We provide a detailed discussion of the analytical and numerical techniques used to study mass-transport phenomena.Comment: 29 pages, 4 figure

Near-field scanning based shielding effectiveness extraction for board level shielding cans

The conventional definition of shielding effectiveness is well suited for calculating electromagnetic shielding in the far-field. However, in the near field, shielding effectiveness calculation is not so straight forward. In radio frequency interference problems, most of the field coupling occurs in near field. Having a well-defined method to calculate near-field shielding effectiveness is important for estimating the suppression of radio frequency interference using the shield cans. In this research, a method to extract the shielding effectiveness of board level shielding cans using near field scanning is developed. Shielding effectiveness is defined by modelling the shielded noise source as equivalent dipole moments. Accuracy of the equivalent source is analyzed by using least square error and correlation coefficient as confidence check parameters. Applying reciprocity theorem, the voltage coupled on a PIFA antenna from an unshielded and a shielded source is calculated. Coupled voltage from a shielded noise source serves as the reference and is used to validate the effectiveness of the developed method. Practical shield cans were used to study and develop the shielding effectiveness extraction method using full wave 3D simulations --Abstract, page iv

Feminism in Kamla Markandya Novels

Kamala Markandaya is a well renowned Indian novelist and journalist whose work reflects the contemporary conflict between the Eastern and Western values She was born in the year 1924 in Mysore in the state of Karnataka The works of Kamala Markandaya feature the modern traditional and spiritual values of Indian societies Her works have exposed the intrinsic woes of womanhood and feminism in a distinctive and unique style She also portrayed through her writing the very existence of women is tortuous and the condition is the same everywhere In most of her novels Markandaya attempted to project the independent minded women and their traditional bounds She belonged to the revolutionary group of Indian women authors who made their mark in the literary field not only through their chosen subject matter but also through their polished presentation styl

Reconfigurable Multiband Dynamic Range Compression-based FRM Filter for Hearing Aid

In this research, we present an innovative method for enhancing the performance of hearing aids using a Multiband Dynamic Range Compression-based Reconfigurable Frequency Response Masking (FRM) Filterbank. First, a unform16-band reconfigurable filter bank, which is reconfigurable, is designed utilizing the FRM scheme. The strategic arrangement of each sub-band within the proposed filter bank is meticulously prepared to optimize the matching performance. Based on the hearing characteristics of patients, the sub-bands can be distributed in low, medium, and high-frequency regions. Also, the gain can be adjusted per the patient's hearing profile from their audiogram for better auditory compensation. Further, the Multiband Dynamic Range Compression (MBDRC) technique is applied to address the specific needs of individuals with different frequency-dependent hearing impairments. It involves using dynamic range compression independently to different frequency sub-bands within a filter bank. In MBDRC, the compression parameters, such as compression threshold and ratio, can be adjusted independently for every subband. It allows for a more tailored approach to address the specific hearing needs of different frequency regions. If an individual has more severe hearing loss in high-frequency regions, higher compression ratios and lower compression thresholds can be applied to those subbands to amplify and improve audibility for high-frequency sounds. Once dynamic range compression is applied to each sub-band, the resultant sub-bands are reassembled to yield the ultimate output signal, which can subsequently be transmitted to the speaker or receiver of the hearing aid. A GUI can be helpful for better visualization and parameter control, including gain adjustment and compression parameters of this entire process. With this aim in mind, a GUI has been developed on MATLAB. Different audio files can be imported, and their frequency response can be generated and observed. Based on a person's audiogram, the control parameters can be set to low, medium, or high. Their sub-band distribution in low, medium, and high-frequency regions can be visualized. Further, the filter bank makes automatic gain adjustments, as seen in the GUI. The gain points for each band can also be manually adjusted according to users' hearing characteristics to minimize the error. Also, the compression parameters can be set separately for each subband as per the hearing requirement of the patient. Further, the processed output can be visualized in the output frequency response tab, and the input and output audio signals can be analyzed

Liquid-liquid Extraction of Everolimus an Immunosuppressant from Human Whole Blood and its Sensitive Determination by UHPLC-MS/MS

A sensitive and precise ultra high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) method has been developed and fully validated for therapeutic drug monitoring of everolimus in human whole blood. Sample preparation involved liquid-liquid extraction of everolimus and its deuterated internal standard (IS, everolimus-d4) from 100 µL blood sample using diethyl ether: ethyl acetate (30:70, v/v) solvent system under alkaline conditions. The chromatography was conducted on a COSMOSIL 2.5C18-MS-II (50 mm × 2.0 mm, 2.5 µm) analytical column. The analyte and IS were eluted within 2.5 min under isocratic conditions using 10mM ammonium acetate, pH 6.00 adjusted with formic acid and acetonitrile (20:80, v/v). Multiple reaction monitoring was used for the quantitation of everolimus (m/z 975.5 → 908.5) and everolimus-d4 (m/z 979.6 → 912.6) in the positive ionization mode. The method was shown to be linear over the entire concentration range from 0.10-50.0 ng/mL. The recovery ranged from 90.9-94.8 % for everolimus and 91.4-95.6 % for everolimus-d4. The selectivity of the method is demonstrated in six different sources of blank human blood. The method is free from matrix effect as apparent from the post-column analyte infusion experiment, absolute and relative matrix effect results. The stability of everolimus in whole blood was thoroughly established under different storage conditions