A Novel Approach on Micropolar Fluid Flow in a Porous Channel with High Mass Transfer via Wavelet Frames

In this article, we present the Laguerre wavelet exact Parseval frame method (LWPM) for the two-dimensional flow of a rotating micropolar fluid in a porous channel with huge mass transfer. This flow is governed by highly nonlinear coupled partial differential equations (PDEs) are reduced to the nonlinear coupled ordinary differential equations (ODEs) using Berman's similarity transformation before being solved numerically by a Laguerre wavelet exact Parseval frame method. We also compared this work with the other methods in the literature available. Moreover, in the graphs of the velocity distribution and microrotation, we shown that the proposed scheme's solutions are more accurate and applicable than other existing methods in the literature. Numerical results explaining the effects of various physical parameters connected with the flow are discussed

A comprehensive study on preparedness, impacts, response and recovery from tropical severe cyclonic storm ‘GAJA’: lessons for the future

Tropical cyclones are very destructive natural hazards that often result in casualties, economic loss, and environmental degradation, especially in the coastal communities. Gaja, categorized as a severe cyclone struck the southeast coast of India on November 16, 2018 and devastated thousands of people in the six districts of the State of Tamil Nadu, India; two years since, many are still reeling from its aftermath. In this study, to assess the 1) preparedness of the community, 2) physio-socio-economic-environment impacts, and 3) post-phase response and recovery, various methodologies were adopted. A total of 18 villages were selected based on the land track of the cyclone for field visits and questionnaire survey. Field data, satellite image processing, and review of report indicated that more than 3/4th of the population, ~ 90 percent of the built-up areas, ~ 40 percent of the vegetation and agricultural crops were severely affected by the cyclone. Even though the community were warned about the cyclone trajectories, only 3/4th of them took precautionary measures to mitigate the effects. The State government has played a major role in evacuating people to safe shelters, bringing back communication to the affected areas, and has also provided some sort of compensation to the victims. In addition to the efforts of the government, volunteers have also offered immediate relief to the affected communities. However, even after one year of the cyclone, only less than 20 percent of the community have completely recovered from the devastation. The results of this study will help comprehend the different phases of cyclone management and formulate better cyclone hazard management plans in the future

Usage of Multilingual Indexing for Retrieving the Information in Multiple Language

There is a solid requirement for the real-time ordering of enormous measures of information streaming at the rate of 10 GB/s or more. This information should be scanned for designs and the query items are time-basic in fields as different as security reconnaissance, monetary services including stock exchanging, checking the basic well-being states of patients, atmosphere notice frameworks, etc. Here, the file will be required to age-off in a little time and thus will be of limited size. Notwithstanding, such situations cannot endure any infringement of indexing latency and severe pursuit reaction times. Likewise, future greatly parallel (multicore) structures with capacity class recollections will empower rapid in-memory constant indexing, where the index can be totally put away in a high limit storage class memory. As the Web is growing, it means a number of documents on the Web are also growing so index size will also

Generalization of Uniqueness and Value Sharing of Meromorphic Functions Concerning Differential Polynomials

The motivation of this paper is to study the uniqueness problems of meromorphic functions concerning differential polynomials that share a small function. The results of the paper improve and generalize the recent results due to Fengrong Zhang and Linlin Wu [13]. We also solve an open problem as posed in the last section of [13]

Screening of Plant Extracts against a Vector of Arboviruses, Aedes aegypti (Linnaeus) (Diptera: Culicidae)

Aedes aegypti is a vector mosquito of dengue haemorrhagic fever, chikungunya, yellow fever, zika, filariasis and other viral infectious disease-causing pathogens. We tested ethanol extracts of the six plant species viz., Cassia fistula, Curcuma amada, Manilkara zapota, Momordica charantia, Sansevieria trifasciata and Solanum indicum at dosages of 25, 50, 75 and 100% for their larvicidal effect against the third instar larva of A. aegypti. We observed maximum larval mortality and minimum LC50, LC90, and LC99 in C. amada (LC50 = 0.14, LC90 = 9.28 and LC99 = 277.97) among the tested plant extracts. All the extracts caused moderate to high larval mortality, and hence, these plant extracts could be a substitute source for A. aegypti control as they comprise a potential source of bioactive chemicals and generally free from toxicants. Applications of these natural derivatives in A. aegypti control could reduce the cost of control methods and environmental contamination

Green synthesis of graphene quantum dots and the dual application of graphene quantum dots-decorated flexible MSM p-type ZnO device as UV photodetector and piezotronic generator

A novel method to synthesize graphene sheets and graphene quantum dots (GQDs) from agricultural waste is reported in this paper. The as-prepared GQDs were decorated on the antimony (Sb)-doped zinc oxide (ZnO) nanostructures to improve the opto-electrical properties of the photodetector. Morphological studies, elemental analysis, absorption and Raman spectroscopy studies were performed on the as-prepared graphene sheets and GQDs. A GQDs-decorated, p-type Sb-doped ZnO metal–semiconductor–metal (MSM) interdigitated UV photodetector was fabricated on a flexible ITO/PET substrate. Structural, morphological and elemental analyses were performed on the GQDs-decorated nanostructures. The Hall measurements show that the device exhibits p-type conductivity with hole concentration of 3 × 1019 cm−3 and Hall mobility of 2067 cm2 V−1 s−1. It is observed from the I–V studies that the Sb-doped ZnO MSM device with GQDs exhibits 103 times higher dark and photocurrents as compared to the device without GQDs decoration. The dynamic response is measured, and the turn-on (τon) and turn-off (τoff) times are found to be 3.67 and 12.26 s, respectively. The device also exhibited piezotronic dark potential on compression at a convex arc angle. Repeated compressions and relaxations were performed on the device and it behaved as a piezotronic generator

Energy Concerned Clustering Mechanism to Ensure Reliable Data Transmission in Wireless Sensor Network

In wireless sensor networks, data reception capability along with higher QoS can be achieved by adapting clustering mechanisms in the network. Hierarchical networks increase data aggregation efficiently. The hierarchical network includes optimal cluster creation and cluster head (CH) selection that yield higher QoS in the network. Hybrid particle swarm optimization with firefly algorithm (HPSOFA) is proposed for CH selection to obtain optimal clustering in the network. Transmission overhead is reduced by 9% when compared with the existing method by applying a modified dynamic source routing (DSR) algorithm. The proposed algorithm addresses the adaptive congestion window size adjustment method to avoid congestion occurrences in the network. Thus, the proposed HPSOFA method improves QoS and establishes reliable communication in the network