Analysis Of Shaped Dielectric Lens Array Antenna By Modal expansion

Theradiation pattern of Spheroidal dielectric lens excited by array antennais expressed in terms of spheroidal (SDL) modal expansion. Since the SDL Vector wave functions are not orthogonal, each the SDL modes are expressed in terms of aninfinite sum of Spherical (SPL) vector modes, that exhibit orthogonality over a measurement surface surrounding the lens and array. The spheroidal modal coefficients can be determined by applying boundary condition on the lens surface. Using the determined coefficients near fields on the measurement surface is computed. This field can be easily transformed to the far field using standard modal expansion. This technique has been applied to a 1x2 array at 10 GHz radiating into a SDL lens and the radiated fields computed with 20 SDL modes, with each SDL mode expressed as 20 SPL modes. The results are compared with a well-known EM flow solver

Duplex Stainless Steels: Effect of Reversion Heat Treatment

Duplex stainless steels present good corrosion resistant and mechanical properties hence they are being used in various pressure boundary components of nuclear power plants such as primary coolant pipes, valves and pump bodies because of the presence of the dual microstructure which consists of equal amounts of austenite and α-ferrite phases. The ratio of austenite and α-ferrite phases mainly depends on the chemical composition. However, when DSS are subjected to the service temperature range of about 300–500°C they undergo embrittlement due to spinodal decomposition of highly alloyed ferrite matrix into iron rich (α) phase and chromium rich (α′) phase. The embrittlement significantly affects impact toughness, tensile strength, ductility, fracture toughness and fatigue behavior limiting the industrial applicability of this steel to temperatures below 280°C. In this chapter, the basic overview of duplex stainless steels and the effect of reversion heat treatment on the thermally embrittled duplex steel is discussed

Human otoacariasis: a common outbreak in rubber growing belt of Karnataka.

Background/Objective: Soft tick in the ear is a very common acute painful and distressing condition in the flowering months of October to March. It’s a common condition in the rubber growing belt of Sullia.The mouthparts of the tick grips firmly the skin of the external auditory canal or the tympanic membrane and sucks blood and swells up. Otoscopy and removal of the tick from the ear can be done in outpatients in adults and difficult in a frightened irritable child.Materials and methods: 312 cases of intra-aural ticks presenting to the opd and casualty which included 131 males and 181 females were included in the study.Results: Out of the 312 cases of intra-aural ticks, 170 cases were treated in the outpatient and 140 cases under short general anesthesia with oto-microscopy.Conclusion: Intra-aural tick infestation is an acute painful condition which needs prompt management by an experienced otolaryngologist. Proper visualization and instrumentation is necessary to avoid complications.

A Research and Strategy of Remote Sensing Image Denoising Algorithms

Most raw data download from satellites are useless, resulting in transmission waste, one solution is to process data directly on satellites, then only transmit the processed results to the ground. Image processing is the main data processing on satellites, in this paper, we focus on image denoising which is the basic image processing. There are many high-performance denoising approaches at present, however, most of them rely on advanced computing resources or rich images on the ground. Considering the limited computing resources of satellites and the characteristics of remote sensing images, we do some research on these high-performance ground image denoising approaches and compare them in simulation experiments to analyze whether they are suitable for satellites. According to the analysis results, we propose two feasible image denoising strategies for satellites based on satellite TianZhi-1.Comment: 9 pages, 4 figures, ICNC-FSKD 201

Qualitative and quantitative assessment of wild genotypes of mango (Mangifera indica L.) in coastal districts of Karnataka, India

Western Ghats are known for wild mangoes known for their distinctive flavours, tastes, and scents. The exploration of wild mangoes of coastal districts of Karnataka was undertaken. A total of 45 mango accessions were assessed for morphological characters (leaf and fruit) using numerical approach. The 14 traits including leaf blade length, leaf blade width, petiole length, fruit length, diameter, weight, and breadth, pulp, TSS, peel, and fruit thickness were analyzed. Fruit weight (g), stone weight (g), pulp (%), peel (%) and leaf blade length (cm) showed most diversity. The Moodbidri accession had most fruit weight (109.55 g), whereas, the Dakshina Kannada district’s Moodbidri accession had the lightest stone weight (12.72 g). It is the first documentation of the local mango germplasm variability in coastal Karnataka

Histological and in vitro seed culture studies on Biancaea sappan (L.) Tod. (Caesalpiniaceae)

Establishment of a tissue culture protocol for clonal regeneration is an essential prerequisite for the potential and economically important plant species Biancaea sappan (L.) Tod. (syn. Caesalpinia sappan L.; Caesalpiniaceae). This plant is a valuable dye-yielding legume shrub native to Indomalayan and is used in India by the local people of Kerala and Tamil Nadu States for its biological potential. The present study evaluated seed development both in vivo and in vitro through histological analysis. The mature seed was used as explants and cultured on modified Murashige and Skoog (MS) medium supplemented with 2, 4-D, BAP, GA3 and IBA. The cultures showed direct regeneration of shoots from nodular structures in the shoot apical meristem (SAM) region. During in vitro regeneration, the callus cells exhibited ballooning of cells, and the morphogenetic seed developed parenchymatous, polygonal cells filled with polyphenols. Histological studies indicated that in vitro plant regeneration involved the organogenic pathway that leads to de novo shoot primordia development

Design And Evaluation Of Hydraulic Suspension Without Spring In LMV

The suspension is the backbone of all vehicles its principle function is to safely carry the maximum load for all designed operating conditions. This project defines design and evaluation of hydraulic suspension without spring in LMV. Shock reduction is an important characteristic which reduces the vibration of the vehicle and carries the load safely. In this project a hydraulic suspension is used to produce hydraulic pressure that negates external forces acting on the vehicle. As a result, the suspension system is able to control vehicle movement freely and continuously. This control capability makes it possible to provide higher levels of ride comfort and vehicle dynamics which obtained with conventional suspension systems. The design was done using CREO PARAMETRIC 2.0 and the model is imported to Proficy / SCADA (IFix version 4.0) for evaluation. The major features of the hydraulic system includeActive bouncing control using by this system,A frequency-sensitive damping mechanism and active control over roll dive

Genome wide analysis of heat responsive microRNAs in banana during acquired thermo tolerance

MicroRNAs are a class of small regulatory RNAs in plants, which play vital roles during various abiotic and abiotic stress conditions including plant processes. In this present study, we examined the expression of miRNAs and their predicted target expression levels during heat stress in banana. Out of 235 miRNA found in Musa, 40 miRNA showed homology to heat responsive miRNAs from other plants. Further, 14 targets for miRNA were predicted that are potentially regulated by their cognate miRNAs and were monitored under three stages of stress viz, induction, induction + lethal alone using qPCR analysis. The results suggest that generally, there is a negative relationship in the expression patterns of miRNA and their predicted cognate targets - HSP70, HSP90, SAP, DNAj genes. These were highly up regulated and their respective miRNAs showed lower expression. This is the first report in banana, which demonstrated that during induction stress, various thermo-protective genes are activated at initial stages of stress to achieve thermotolerance through altered miRNA expression. The results will help in broadening our understanding acquired thermotolerance and their regulation by miRNAs in plants