171 research outputs found
Author and Owner Intersection in Sound Recordings in The Copyright Act of India
No full text245-250The present work focuses on the intersection of author and owner concerning sound recordings. The interpretation of copyright law on the author and owner intersection by the Court's are rather varied. It may be because the restricted issues at its hand lead the courts. More particularly, interpretation of provisos (b) and (c) of Section 17 of The Copyright Act, 1957 leads to differing interpretations by the Courts. The present analysis is made by studying three recent judgments to understand the author and owner conflicts of sound recordings
Distinct RNA profiles in subpopulations of extracellular vesicles: apoptotic bodies, microvesicles and exosomes
No full textIntroduction: In recent years, there has been an exponential increase in the number of studies aiming to understand the biology of exosomes, as well as other extracellular vesicles. However, classification of membrane vesicles and the appropriate protocols for their isolation are still under intense discussion and investigation. When isolating vesicles, it is crucial to use systems that are able to separate them, to avoid cross-contamination. Method: EVs released from three different kinds of cell lines: HMC-1, TF-1 and BV-2 were isolated using two centrifugation-based protocols. In protocol 1, apoptotic bodies were collected at 2,000×g, followed by filtering the supernatant through 0.8 µm pores and pelleting of microvesicles at 12,200×g. In protocol 2, apoptotic bodies and microvesicles were collected together at 16,500×g, followed by filtering of the supernatant through 0.2 µm pores and pelleting of exosomes at 120,000×g. Extracellular vesicles were analyzed by transmission electron microscopy, flow cytometry and the RNA profiles were investigated using a Bioanalyzer®. Results: RNA profiles showed that ribosomal RNA was primary detectable in apoptotic bodies and smaller RNAs without prominent ribosomal RNA peaks in exosomes. In contrast, microvesicles contained little or no RNA except for microvesicles collected from TF-1 cell cultures. The different vesicle pellets showed highly different distribution of size, shape and electron density with typical apoptotic body, microvesicle and exosome characteristics when analyzed by transmission electron microscopy. Flow cytometry revealed the presence of CD63 and CD81 in all vesicles investigated, as well as CD9 except in the TF-1-derived vesicles, as these cells do not express CD9. Conclusions: Our results demonstrate that centrifugation-based protocols are simple and fast systems to distinguish subpopulations of extracellular vesicles. Different vesicles show different RNA profiles and morphological characteristics, but they are indistinguishable using CD63-coated beads for flow cytometry analysis
The t-pebbling number of Jahangir graph J3,m
No full textThe t-pebbling number, ft(G), of a connected graph G, is the smallest positive integer such that from every placement of ft(G) pebbles, t pebbles can be moved to any specified target vertex by a sequence of pebbling moves, each move removes two pebbles of a vertex and placing one on an adjacent vertex. In this paper, we determine the t-pebbling number for Jahangir graph J3,m and finally we give a conjecture for the t-pebbling number of the graph Jn,m
Reduce the complexity of the E-learning authoring process
No full textFor every problem, there is one solution which is simple, neat, and wrong. The production of E-Learning contents is today the largest cost factor in the E-Learning and also the major issue of insecurity. This is an obstacle with the further propagation of the E-Learning. At present there are hardly visible numbers of tools to the production of E-Leaning contents. Besides the partial very high prices for this software they have the deficiency that they are usable only after a training course phase by the E-Learning author due to their complexity and its extent. The new challenge for designers and the researchers is to develop software tools for effective E-Learning. This Master thesis proposes an E-learning authoring tool which automatically uploads the file (OpenOffice document) which is selected by the enduser to the LMS/server. It also narrates how the content and the metadata are transformed as a SCORM package as well as its simplicity comparing to the other tools
The t-Pebbling Number of Jahangir Graph
No full textGiven a configuration of pebbles on the vertices of a connected graph G, a
pebbling move (or pebbling step) is defined as the removal of two pebbles from a vertex and placing one pebble on an adjacent vertex. The t-pebbling number, ft(G) of a graph G is the least number m such that, however m pebbles are placed on the vertices of G, we can move t pebbles to any vertex by a sequence of pebbling moves
Chemical and biological evaluation of Andrographis echioides leaf extracts collected from the Vellore district in Tamil Nadu, India
No full textAbstractThe chemical and biological activities of crude extracts of Andrographis echioides leaves using petroleum (pet) ether, ethyl acetate, methanol and aqueous solvents were assayed.The total phenol, flavonoid, protein and carbohydrate contents of A. echioides crude extracts were evaluated. The antioxidant activities of the leaf extracts were determined by 1,1-diphenyl-2-picrylhydrazyl radical (DPPH), hydrogen peroxide, metal chelating, reducing power and total antioxidant activity assays. In addition, the crude extracts were screened for antibacterial activity (gram-positive and gram-negative bacteria) by disc diffusion method and the minimum inhibitory concentration was determined.Of the crude extracts tested, the pet ether extract of A. echioides contained more total phenols (0.01955 ± 0.0012 mg/g), flavonoids (1.2889 ± 0.3606 mg/g) and proteins (1.6065 ± 0.160 mg/mL). The aqueous extract of A. echioides was enriched for carbohydrate (467.6 ± 0.003 mg/mL). The methanol extract of A. echioides exhibited potent antioxidant activity IC50 values (1.14 ± 0.06 to 1.15 ± 0.45 μg/mL), as well as antibacterial activity (16 ± 1.527 mm), than the aqueous extract of A. echioides (20 ± 1.527 mm).A. echioides has great potential as a source of anti-cancer compounds due to its high antioxidant content and antibacterial activity
Improved salp swarm algorithm based optimization of mobile task offloading
No full textBackground The realization of computation-intensive applications such as real-time video processing, virtual/augmented reality, and face recognition becomes possible for mobile devices with the latest advances in communication technologies. This application requires complex computation for better user experience and real-time decision-making. However, the Internet of Things (IoT) and mobile devices have computational power and limited energy. Executing these computational-intensive tasks on edge devices may result in high energy consumption or high computation latency. In recent times, mobile edge computing (MEC) has been used and modernized for offloading this complex task. In MEC, IoT devices transmit their tasks to edge servers, which consecutively carry out faster computation. Methods However, several IoT devices and edge servers put an upper limit on executing concurrent tasks. Furthermore, implementing a smaller size task (1 KB) over an edge server leads to improved energy consumption. Thus, there is a need to have an optimum range for task offloading so that the energy consumption and response time will be minimal. The evolutionary algorithm is the best for resolving the multiobjective task. Energy, memory, and delay reduction together with the detection of the offloading task is the multiobjective to achieve. Therefore, this study presents an improved salp swarm algorithm-based Mobile Application Offloading Algorithm (ISSA-MAOA) technique for MEC. Results This technique harnesses the optimization capabilities of the improved salp swarm algorithm (ISSA) to intelligently allocate computing tasks between mobile devices and the cloud, aiming to concurrently minimize energy consumption, and memory usage, and reduce task completion delays. Through the proposed ISSA-MAOA, the study endeavors to contribute to the enhancement of mobile cloud computing (MCC) frameworks, providing a more efficient and sustainable solution for offloading tasks in mobile applications. The results of this research contribute to better resource management, improved user interactions, and enhanced efficiency in MCC environments
The t-pebbling number of Lamp graphs
No full textLet G be a graph and some pebbles are distributed on its vertices. A pebbling move (step) consists of removing two pebbles from one vertex, throwing one pebble away, and moving the other pebble to an adjacent vertex. The t-pebbling number of a graph G is the least integer m such that from any distribution of m pebbles on the vertices of G, we can move t pebbles to any specified vertex by a sequence of pebbling moves.
In this paper, we determine the t-pebbling number of Lamp graphs
Dry sliding wear behaviour of Ta/NbC filled glass-epoxy composites at elevated temperatures
No full textIn this work an attempt was made to evaluate wear loss, specific wear rate and coefficient of friction of Glass-Epoxy (G-E) composites with and without Tantalum Niobium Carbide (Ta/NbC) filler. A vacuum assisted resin transfer moulding (VARTM) technique was employed to fabricate the composite specimens. The fabricated wear specimens were tested by using pin-on-disk test rig at various temperatures viz., 30, 60, 90 and 120° C at normal applied loads of 10 N and 20 N. Sliding velocity of the disc of 1.5 m/s was maintained and test was continued for each sample up to a sliding distance of 5000 m. The wear loss in both the composites increases with increase in temperature and applied normal load. However, Ta/NbC particulate filler incorporated G-E composite exhibits lower wear rate and higher coefficient of friction as compared to unfilled G-E composite. The features of worn surfaces of the specimens were examined under scanning electron microscopy (SEM) and findings are analysed
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