Presented BY
G.KRANTHI KIRAN
ELECTRONICS AND COMMUNICATION ENGINEERING
PRASAD V. POTLURI SIDDHARTHA INSTITUTE OF TECHNOLOGY
Affiliated to JNTU KAKINADA, Approved by AICTE, New Delhi
KANURU,VIJAYAWADA-520 007

ABSTRACT
A structure of circularly polarized, thin conformal antenna array which may be mounted integrally with the skin of an aircraft employs microstrip elliptical elements and interconnecting feedlines separated from ground plane by a thin dielectric layer. The feedlines are ....etc

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Nondestructive testing has become an essential tool for failure prevention, conditionbased maintenance, structural health monitoring, as well as for quality control during production processes. Ultrasound and Acousto-Optics are applied to examine the mechanical properties of isotropic and anisotropic materials, and also to detect material defects. Fiber reinforced composites are ubiquitous in many industries, yet the interaction of ultrasound with such materials is particularly challenging because of effects such as surface roughness, the fact ....etc

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Submitted to:
Mr. DEEPAK SOOD

[Submitted by:
PRADEEP(1407234)
SHRI KRISHAN DEV BHOOMI INSTITUTE OF ENGINEERING & TECHNOLOGY



History of Microstrip Patch Antenna
The rapid development of microstrip antenna technology began in the late 1970s. By the early 1980s basic microstrip antenna elements and arrays were fairly well established in terms of design and modeling, and workers were turning their attentions to improving antenna performance features (e.g. bandwid ....etc

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Dose Evaluation in Moving/Deforming Anatomy: Methods and Clinical Implications




The aim of any radiotherapy is to tailor the radiation dose to the tumoricidal target volume and to deliver as low radiation as possible to all other normal tissues. However, the motion and deformation induced in human tissue by the ventilatory motion is a major issue since the standard practice usually uses only one computed tomography (CT) scan (and hence one instance of the patient's anatomy) for treatment planning. Even if the planning CT images are fre ....etc

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Design and development of X-band micro strip patch antenna

Introduction


In high-performance aircraft, spacecraft, satellite and missile applications, where size, weight, cost, performance, ease of installation, and aerodynamic profiles are constraints, low profile antennas may be required. These antennas should have low profile, conformable to planar and non-planar surfaces, simple and inexpensive to manufacture using modern printed-circuit technology, mechanically robust when mounted on rigid surfaces, compatible with MMIC designs, and ....etc

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Fractal Antennas

There has been an ever-growing demand, in both the military as well as the commercial sectors, for antenna designs that possess the following highly desirable attributes: 1. Compact size 2. Low profile 3. Conformal 4. Multi-band or broadband

There are a variety of approaches that have been developed over the years, which can be utilized to achieve one or more of these design objectives. Recently, the possibility of developing antenna designs that exploit in some way the properties of fractals to achieve these goals, at le ....etc

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Presented BY
G.KRANTHI KIRAN
ELECTRONICS AND COMMUNICATION ENGINEERING
PRASAD V. POTLURI SIDDHARTHA INSTITUTE OF TECHNOLOGY
Affiliated to JNTU KAKINADA, Approved by AICTE, New Delhi
KANURU,VIJAYAWADA-520 007

ABSTRACT
A structure of circularly polarized, thin conformal antenna array which may be mounted integrally with the skin of an aircraft employs microstrip elliptical elements and interconnecting feedlines separated from ground plane by a thin dielectric layer. The feedlines are ....etc

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Global Positioning System
Global Positioning System is an System to Identify the Position on Globe through a Network Of Satellites.
The Global Positioning System (GPS) is a U.S. space-based global navigation satellite system. It provides reliable positioning, navigation, and timing services to worldwide users. The Space, Control and User are the three segments of this . The User Segment is composed of hundreds of thousands of U.S. and allied military users of the secure GPS Precise Positioning Service. The Space Segment is composed of 24 ....etc

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Caricatures of Big Bang from Matrices
Presented By:
Sumit R. Das
University of Kentucky, Lexington

Space-time from Matrices
A common slogan in string theory is that space and time are not fundamental, but derived concepts which emerge out of more fundamental structures.
In a few cases we have some hint of what this structure could be “ these are situations where the space-time physics has a holographic description “ usually in terms of a field theory of matrices.
These are in fact descrip ....etc

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TECHNICAL ASPECTS OF IMAGE-GUIDED RESPIRATION-GATED
RADIATION THERAPY


STEVE B. JIANG, PH.D.
Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA
( Accepted 21 December 2005)


Abstract—In this review article, we discuss various technical aspects of image-guided respiration-gated radiation
therapy. We first review some basic concepts related to respiratory gating, including gating window, duty cycle,
residual motion, internal/external gating, amplitud ....etc

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There are two ways of producing high intensity white-light LED. One is to first produce individual LEDs that emit three primary colors ? red, green, and blue, and then mix all the colors to produce white light. Hence the product is called multi-colored white LEDs (sometimes referred to as RGB LEDs). Because its mechanism is involved with sophisticated electro-optical design to control the blend and diffusion of different colors, this approach has rarely been used to mass produce white LEDs in the industry. Nevertheless this method is particula ....etc

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