1,954 research outputs found
An Analytical Approach for Design of Microstrip Patch (MsP)
A reliable configuration of electromagnetic interactions for antenna design can yield an effective Microstrip patch (MsP) antenna. During its design, the antenna arrays involve issues with parameters (i.e., space, dimension, shape) adjustment. This problem can be tackled with an analytical approach which can help to bring better idea to design the antenna aaray. However, the realistic designs of antenna array are quite expensive while extracting computational accuracy. Thus, to have low cost computational accuracy various meta-heuristic (generic algorithm, partical swarm optimizarion) approaches are used and are considered as effective one in handling the pattern synthesis problems. Howeever, the use of meta-heuristic approaches demands thousands of functions to analyze the antenna design. This manuscript introduces an analytical approach for MsP antenna desing using MATLAB that brings optimization in handling the side lobes and optimizing the reflection as well as radiation responses. The outcomes of the design were analyzed with respect to reflection, radiation coefficients, side lobes and found effective at 10GHz as per computational cost is concern
The chromatic discrepancy of graphs
For a proper vertex coloring cc of a graph GG, let φc(G)φc(G) denote the maximum, over all induced subgraphs HH of GG, the difference between the chromatic number χ(H)χ(H) and the number of colors used by cc to color HH. We define the chromatic discrepancy of a graph GG, denoted by φ(G)φ(G), to be the minimum φc(G)φc(G), over all proper colorings cc of GG. If HH is restricted to only connected induced subgraphs, we denote the corresponding parameter by View the MathML sourceφˆ(G). These parameters are aimed at studying graph colorings that use as few colors as possible in a graph and all its induced subgraphs. We study the parameters φ(G)φ(G) and View the MathML sourceφˆ(G) and obtain bounds on them. We obtain general bounds, as well as bounds for certain special classes of graphs including random graphs. We provide structural characterizations of graphs with φ(G)=0φ(G)=0 and graphs with View the MathML sourceφˆ(G)=0. We also show that computing these parameters is NP-hard
ANTI-ANEMIC ACTIVITY OF SPROUTS OF VIGNA RADIATA L. IN MALE ALBINO RATS
Objective: To evaluate the anti-anemic activity of sprouts of Vigna radiata L. against phenyl hydrazine induced anemic rats.Methods: Rats were divided into 4 groups of 6 each. Group 1 was given normal saline and served as control and all other groups were given 40 mg/kg b. w of phenyl hydrazine for 2 d to induce anemia. Group 3 was treated with Bioferon (230 mg/kg) and served as the standard. Group 4 was treated with sprouted Vigna radiata L. (600 mg/kg bw). All the treatments were given orally. On completion of the experimental period, all the test substance/vehicle-treated rats were sacrificed and the plasma separated was used for estimating various biochemical as well as hematological parameters as per standard procedures. Results: The experimental rats treated with sprouted Vigna radiata L. at the dose level 600 mg/kg bw for 13 d revealed significant changes in biochemical and hematological parameters compared to phenyl hydrazine induced anemic rats.Conclusion: The present study concluded that the sprouted Vigna radiata L. inhibits anemia induced by phenyl hydrazine in male albino rats. Â
Selection of the lamprey VLRC antigen receptor repertoire
The alternative adaptive immune system of jawless vertebrates is based on different isotypes of variable lymphocyte receptors (VLRs) that are composed of leucine-rich repeats (LRRs) and expressed by distinct B- and T-like lymphocyte lineages. VLRB is expressed by B-like cells, whereas VLRA and VLRC are expressed by two T-like lineages that develop in the thymoid, a thymus-like structure in lamprey larvae. In each case, stepwise combinatorial insertions of different types of short donor LRR cassettes into incomplete germ-line genes are required to generate functional VLR gene assemblies. It is unknown, however, whether the diverse repertoires of VLRs that are expressed by peripheral blood lymphocytes are shaped by selection after their assembly. Here, we identify signatures of selection in the peripheral repertoire of VLRC antigen receptors that are clonally expressed by one of the T-like cell types in lampreys. Selection strongly favors VLRC molecules containing four internal variable leucine-rich repeat (LRRV) modules, although VLRC assemblies encoding five internal modules are initially equally frequent. In addition to the length selection, VLRC molecules in VLRC+ peripheral lymphocytes exhibit a distinct pattern of high entropy sites in the N-terminal LRR1 module, which is inserted next to the germ-line–encoded LRRNT module. This is evident in comparisons to VLRC gene assemblies found in the thymoid and to VLRC gene assemblies found in some VLRA+ cells. Our findings are the first indication to our knowledge that selection operates on a VLR repertoire and provide a framework to establish the mechanism by which this selection occurs during development of the VLRC+ lymphocyte lineage
Detection and classification of Bacteria using Raman Spectroscopy Combined with Multivariate Analysis
Vibrational spectroscopic techniques have advantages over conventional microbiological approaches towards identification & detection of pathogens. Since unique spectral fingerprint is obtained, one can identify very closely related bacteria using such methods. In this study Raman microspectroscopy in combination with chemometric method has been used to classify four strains of E. coli (two pathogenic & two non-pathogenic). Different multivariate approaches such as hierarchical cluster analysis, principal component analysis & linear discriminant analysis were explored to obtain efficient classification of the Raman signals obtained from the four strains of E.coli. It was observed that multivariate analysis was able to classify the bacteria at strain level. Linear discrimination analysis using PC scores (PC-LDA) was found to give very good result with as high as 100% accuracy. This hybrid technique (Raman spectroscopy & multivariate analysis) has tremendous potential to be developed as a tool for bacterial identification.
A neo-clerodane diterpene from Teucrium tomentosum. Corrigendum
Corrigendum to Acta Cryst. (2004), E60, o117–o119
Design Of High Competent Meter Of Controlling Electrical Applications And Habitual Bill Generation System
In this paper Wireless Sensing unit Residence Location Network (WSHAN) with IOT interfaced reasonable meter is created in addition to carry out. As a result of the boosting demands on electric power, normal electric grid needs to be altered with smart, durable, qualified in addition to also pricey dependable practical grid applications. Wireless Sensor Networks (WSN) has an essential obligation to establish trustworthy in addition to costly efficient smart electric power grid applications. Our system develops power usage logs information real-time along with in addition reveals time of use well worth's. The system additionally deals with any type of type of sort of tool affixed to power outcome. While powering on along with off, zero-cross of Ac system signal is located to identify phase modification. The smart meter uses ideal power usage along with transfer's information with WIFI to COMPUTER SYSTEM (Personal Computer). The private checks the power information along with additionally from another area manages the system
Antitumor and Immunopotentiating Activity of Polysaccharide PST001 Isolated from the Seed Kernel of Tamarindus indica: An InVivo Study inMice
Antitumor activity of polysaccharide PST001 isolated from the seed kernel of Tamarindus indica was evaluated using different
cancer cell lines. Human cancer cell lines A549, KB, and MCF-7 and murine cancer cell lines DLA and EAC were treated with
PST001 and cell growth inhibition was assessed by MTT assay. In vivo studies were carried out for toxicity, tumor reduction
and immunomodulation. The respective IC50 of PST001 in A549, KB, and DLA was at 80.72, 190.99, and 91.14 μg/mL. Significant
tumor reduction was obtained in both DLA and EAC tumors on treatment with PST001 which was more prominent when PST001
was administered with CTX/5-fluorouracil. Increase in total WBC, CD4+ T-cell population, and bonemarrow cellularity suggested
strong immunomodulatory activity for this compound. No significant abnormality was observed in toxicity studies. Thus the
results of the present study suggest that PST001 has immunomodulatory and tumor inhibitory activities and has the potential to
be developed as an anticancer agent and immunomodulator either as a sole agent or as an adjuvant to other chemotherapeutic
drugs
Enhancement of yield in nutmeg (Myristica fragrans Houtt.) through pruning
Enhancement of yield in nutmeg (Myristica fragrans Houtt.) through pruning
 
Hamilton's Turns for the Lorentz Group
Hamilton in the course of his studies on quaternions came up with an elegant
geometric picture for the group SU(2). In this picture the group elements are
represented by ``turns'', which are equivalence classes of directed great
circle arcs on the unit sphere , in such a manner that the rule for
composition of group elements takes the form of the familiar parallelogram law
for the Euclidean translation group. It is only recently that this construction
has been generalized to the simplest noncompact group , the double cover of SO(2,1). The present work develops a theory of
turns for , the double and universal cover of SO(3,1) and ,
rendering a geometric representation in the spirit of Hamilton available for
all low dimensional semisimple Lie groups of interest in physics. The geometric
construction is illustrated through application to polar decomposition, and to
the composition of Lorentz boosts and the resulting Wigner or Thomas rotation.Comment: 13 pages, Late
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