antenna theory balanis index and chapter 01

... behind conformal antennas, as well as hands-on information necessary for the analysis and design of conformal antenna arrays. Graphical illustrations are used extensively, both for calculated and ... linear array theory can be applied to planar arrays, just as the circular array case can be applied to cylindrical arrays. 16 CIRCULAR ARRAY THEORY Figure 2.1. A circular p...

Ngày tải lên: 17/03/2014, 13:45

... planar arrays can be learned from studies of linear array antennas. Similarly, by studying circular arrays we can understand some basic aspects of conformal array antennas, especially cylindrical and ... PM Page 17 CONFORMAL ARRAY ANTENNA THEORY AND DESIGN Lars Josefsson Chalmers University of Technology, Sweden Patrik Persson Royal Institute of Technology, Sweden IEEE An...

Ngày tải lên: 29/06/2014, 06:20

... the basic principles and the fundamental microwave antenna types and techniques. The elements of electromagnetic theory and physical optics that are needed as a basis for design techniques are ... imposed on long-wave antennas by the necessary relationship between the dimensions of the antenna elements and the wavelengths. 104. Microwave Transmission Lines The form of mic...

Ngày tải lên: 29/06/2014, 06:20

... messengers of threats to tissue injury but also play an active role in Chapter 012. Pain: Pathophysiology and Management (Part 2) Sensitization When intense, repeated, or prolonged stimuli are ... nociceptors is lowered and the frequency of firing is higher for all stimulus intensities. Inflammatory mediators such as bradykinin, nerve growth factor, some prostagla...

Ngày tải lên: 06/07/2014, 08:20

... this pain-modulating circuit contain endogenous opioid Chapter 012. Pain: Pathophysiology and Management (Part 4) Pain transmission and modulatory pathways. A. Transmission system for nociceptive ... circuits has links in the hypothalamus, midbrain, and medulla, and it selectively controls spinal pain-transmission neurons through a descending pathway (Fig. 12 -...

Ngày tải lên: 06/07/2014, 08:20

... platelet-mediated blood clotting and are thus associated with increased Chapter 012. Pain: Pathophysiology and Management (Part 6) a Antidepressants, anticonvulsants, and antiarrhythmics have ... of compounds in the management of acute severe pain. Ketorolac is sufficiently potent and rapid in onset to supplant opioids for many patients with acute severe heada...

Ngày tải lên: 06/07/2014, 08:20

... headache a Rheumatoid arthritis a,b Chronic low back pain b Cancer Chapter 012. Pain: Pathophysiology and Management (Part 8) Antidepressant Medications The tricyclic antidepressants [amitriptyline, ... degree of tolerance and physical dependence are likely with long-term use. Therefore, before embarking on opioid therapy, other options should be explored, a...

Ngày tải lên: 06/07/2014, 08:20

... selective cyclo-oxygenase-2 inhibitors and traditional non-steroidal anti-inflammatory drugs increase the risk of atherothrombosis? Meta-analysis of randomized trials. BMJ 332:1302, 2006 [PMID: ... Macintyre PE: Safety and efficacy of patient-controlled analgesia. Br J Anaesth 87:36, 2001 [PMID: 11460812] Wager TD et al: Placebo-induced changes in FMRI in the anticipation and expe...

Ngày tải lên: 06/07/2014, 08:20

... small-diameter myelinated A- delta (Aδ) and the unmyelinated (C fiber) axons (Fig. 12 -1). These fibers are present in nerves to the skin and to deep somatic and visceral structures. Some tissues, ... properties illustrate the duality of pain: it is both sensation and emotion. When acute, pain is characteristically associated with behavioral arousal and a stress response consis...

Ngày tải lên: 06/07/2014, 08:20

... 6 00–1200 q 8 h Oxcarbaz ine 3 00 bid Pregab alin 1 50–600 bid Chapter 012. Pain: Pathophysiology and Management (Part 5) Sympathetically Maintained Pain Patients with peripheral nerve ... soft tissue trauma, myocardial infarction, and stroke (Chap. 370). Although the pathophysiology of this condition is poorly understood, the pain and the signs of...

Ngày tải lên: 06/07/2014, 08:20

... 16-2 Chapter 016. Back and Neck Pain (Part 1) Harrison's Internal Medicine > Chapter 16. Back and Neck Pain Back and Neck Pain: Introduction The importance of back and neck pain ... years; (3) low back pain is the second most common reason for visiting a physician in the United States; and (4) ~1% of the U.S. population is chron...

Ngày tải lên: 06/07/2014, 08:20

... "sclerotomal" pain may explain some cases of back and leg pain without evidence of nerve root compression. Radicular back pain is typically sharp and radiates from the lumbar ... L3, and L4 roots) passes anterior to the hip and is not stretched by sitting. The description of the pain alone often fails to distinguish between sclerotomal pain and radiculopat...

Ngày tải lên: 06/07/2014, 08:20

Ngày tải lên: 06/11/2014, 08:15

... manner, the fundamental princi- ples of antenna theory and to apply them to the analysis, design, and measurements of antennas. Because there are so many methods of analysis and design and a ... aperture antennas; horn antennas; microstrip antennas; and reflector antennas. A tutorial chapter on Smart Antennas has been included to introduce the student in a technology tha...

Ngày tải lên: 25/03/2015, 15:39